diff --git a/GeoModelDBManager/fmt/core.h b/GeoModelDBManager/fmt/core.h
new file mode 100644
index 0000000000000000000000000000000000000000..0e0824f5fe79891b840180228123d2d2d65e9fe0
--- /dev/null
+++ b/GeoModelDBManager/fmt/core.h
@@ -0,0 +1,1796 @@
+// Formatting library for C++ - the core API
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_CORE_H_
+#define FMT_CORE_H_
+
+#include <cstdio> // std::FILE
+#include <cstring>
+#include <functional>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <vector>
+
+// The fmt library version in the form major * 10000 + minor * 100 + patch.
+#define FMT_VERSION 60201
+
+#ifdef __has_feature
+# define FMT_HAS_FEATURE(x) __has_feature(x)
+#else
+# define FMT_HAS_FEATURE(x) 0
+#endif
+
+#if defined(__has_include) && !defined(__INTELLISENSE__) && \
+ !(defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1600)
+# define FMT_HAS_INCLUDE(x) __has_include(x)
+#else
+# define FMT_HAS_INCLUDE(x) 0
+#endif
+
+#ifdef __has_cpp_attribute
+# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
+#else
+# define FMT_HAS_CPP_ATTRIBUTE(x) 0
+#endif
+
+#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \
+ (__cplusplus >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute))
+
+#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \
+ (__cplusplus >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute))
+
+#ifdef __clang__
+# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__)
+#else
+# define FMT_CLANG_VERSION 0
+#endif
+
+#if defined(__GNUC__) && !defined(__clang__)
+# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#else
+# define FMT_GCC_VERSION 0
+#endif
+
+#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
+# define FMT_HAS_GXX_CXX11 FMT_GCC_VERSION
+#else
+# define FMT_HAS_GXX_CXX11 0
+#endif
+
+#ifdef __NVCC__
+# define FMT_NVCC __NVCC__
+#else
+# define FMT_NVCC 0
+#endif
+
+#ifdef _MSC_VER
+# define FMT_MSC_VER _MSC_VER
+#else
+# define FMT_MSC_VER 0
+#endif
+
+// Check if relaxed C++14 constexpr is supported.
+// GCC doesn't allow throw in constexpr until version 6 (bug 67371).
+#ifndef FMT_USE_CONSTEXPR
+# define FMT_USE_CONSTEXPR \
+ (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \
+ (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L)) && \
+ !FMT_NVCC
+#endif
+#if FMT_USE_CONSTEXPR
+# define FMT_CONSTEXPR constexpr
+# define FMT_CONSTEXPR_DECL constexpr
+#else
+# define FMT_CONSTEXPR inline
+# define FMT_CONSTEXPR_DECL
+#endif
+
+#ifndef FMT_OVERRIDE
+# if FMT_HAS_FEATURE(cxx_override) || \
+ (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900
+# define FMT_OVERRIDE override
+# else
+# define FMT_OVERRIDE
+# endif
+#endif
+
+// Check if exceptions are disabled.
+#ifndef FMT_EXCEPTIONS
+# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \
+ FMT_MSC_VER && !_HAS_EXCEPTIONS
+# define FMT_EXCEPTIONS 0
+# else
+# define FMT_EXCEPTIONS 1
+# endif
+#endif
+
+// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature).
+#ifndef FMT_USE_NOEXCEPT
+# define FMT_USE_NOEXCEPT 0
+#endif
+
+#if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \
+ (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900
+# define FMT_DETECTED_NOEXCEPT noexcept
+# define FMT_HAS_CXX11_NOEXCEPT 1
+#else
+# define FMT_DETECTED_NOEXCEPT throw()
+# define FMT_HAS_CXX11_NOEXCEPT 0
+#endif
+
+#ifndef FMT_NOEXCEPT
+# if FMT_EXCEPTIONS || FMT_HAS_CXX11_NOEXCEPT
+# define FMT_NOEXCEPT FMT_DETECTED_NOEXCEPT
+# else
+# define FMT_NOEXCEPT
+# endif
+#endif
+
+// [[noreturn]] is disabled on MSVC and NVCC because of bogus unreachable code
+// warnings.
+#if FMT_EXCEPTIONS && FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VER && \
+ !FMT_NVCC
+# define FMT_NORETURN [[noreturn]]
+#else
+# define FMT_NORETURN
+#endif
+
+#ifndef FMT_MAYBE_UNUSED
+# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused)
+# define FMT_MAYBE_UNUSED [[maybe_unused]]
+# else
+# define FMT_MAYBE_UNUSED
+# endif
+#endif
+
+#ifndef FMT_DEPRECATED
+# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VER >= 1900
+# define FMT_DEPRECATED [[deprecated]]
+# else
+# if defined(__GNUC__) || defined(__clang__)
+# define FMT_DEPRECATED __attribute__((deprecated))
+# elif FMT_MSC_VER
+# define FMT_DEPRECATED __declspec(deprecated)
+# else
+# define FMT_DEPRECATED /* deprecated */
+# endif
+# endif
+#endif
+
+// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers.
+#if defined(__INTEL_COMPILER) || defined(__PGI) || FMT_NVCC
+# define FMT_DEPRECATED_ALIAS
+#else
+# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED
+#endif
+
+#ifndef FMT_BEGIN_NAMESPACE
+# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \
+ FMT_MSC_VER >= 1900
+# define FMT_INLINE_NAMESPACE inline namespace
+# define FMT_END_NAMESPACE \
+ } \
+ }
+# else
+# define FMT_INLINE_NAMESPACE namespace
+# define FMT_END_NAMESPACE \
+ } \
+ using namespace v6; \
+ }
+# endif
+# define FMT_BEGIN_NAMESPACE \
+ namespace fmt { \
+ FMT_INLINE_NAMESPACE v6 {
+#endif
+
+#if !defined(FMT_HEADER_ONLY) && defined(_WIN32)
+# if FMT_MSC_VER
+# define FMT_NO_W4275 __pragma(warning(suppress : 4275))
+# else
+# define FMT_NO_W4275
+# endif
+# define FMT_CLASS_API FMT_NO_W4275
+# ifdef FMT_EXPORT
+# define FMT_API __declspec(dllexport)
+# elif defined(FMT_SHARED)
+# define FMT_API __declspec(dllimport)
+# define FMT_EXTERN_TEMPLATE_API FMT_API
+# endif
+#endif
+#ifndef FMT_CLASS_API
+# define FMT_CLASS_API
+#endif
+#ifndef FMT_API
+# if FMT_GCC_VERSION || FMT_CLANG_VERSION
+# define FMT_API __attribute__((visibility("default")))
+# define FMT_EXTERN_TEMPLATE_API FMT_API
+# define FMT_INSTANTIATION_DEF_API
+# else
+# define FMT_API
+# endif
+#endif
+#ifndef FMT_EXTERN_TEMPLATE_API
+# define FMT_EXTERN_TEMPLATE_API
+#endif
+#ifndef FMT_INSTANTIATION_DEF_API
+# define FMT_INSTANTIATION_DEF_API FMT_API
+#endif
+
+#ifndef FMT_HEADER_ONLY
+# define FMT_EXTERN extern
+#else
+# define FMT_EXTERN
+#endif
+
+// libc++ supports string_view in pre-c++17.
+#if (FMT_HAS_INCLUDE(<string_view>) && \
+ (__cplusplus > 201402L || defined(_LIBCPP_VERSION))) || \
+ (defined(_MSVC_LANG) && _MSVC_LANG > 201402L && _MSC_VER >= 1910)
+# include <string_view>
+# define FMT_USE_STRING_VIEW
+#elif FMT_HAS_INCLUDE("experimental/string_view") && __cplusplus >= 201402L
+# include <experimental/string_view>
+# define FMT_USE_EXPERIMENTAL_STRING_VIEW
+#endif
+
+#ifndef FMT_UNICODE
+# define FMT_UNICODE !FMT_MSC_VER
+#endif
+#if FMT_UNICODE && FMT_MSC_VER
+# pragma execution_character_set("utf-8")
+#endif
+
+FMT_BEGIN_NAMESPACE
+
+// Implementations of enable_if_t and other metafunctions for older systems.
+template <bool B, class T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+template <bool B, class T, class F>
+using conditional_t = typename std::conditional<B, T, F>::type;
+template <bool B> using bool_constant = std::integral_constant<bool, B>;
+template <typename T>
+using remove_reference_t = typename std::remove_reference<T>::type;
+template <typename T>
+using remove_const_t = typename std::remove_const<T>::type;
+template <typename T>
+using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type;
+template <typename T> struct type_identity { using type = T; };
+template <typename T> using type_identity_t = typename type_identity<T>::type;
+
+struct monostate {};
+
+// An enable_if helper to be used in template parameters which results in much
+// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed
+// to workaround a bug in MSVC 2019 (see #1140 and #1186).
+#define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
+
+namespace internal {
+
+// A helper function to suppress bogus "conditional expression is constant"
+// warnings.
+template <typename T> FMT_CONSTEXPR T const_check(T value) { return value; }
+
+// A workaround for gcc 4.8 to make void_t work in a SFINAE context.
+template <typename... Ts> struct void_t_impl { using type = void; };
+
+FMT_NORETURN FMT_API void assert_fail(const char* file, int line,
+ const char* message);
+
+#ifndef FMT_ASSERT
+# ifdef NDEBUG
+// FMT_ASSERT is not empty to avoid -Werror=empty-body.
+# define FMT_ASSERT(condition, message) ((void)0)
+# else
+# define FMT_ASSERT(condition, message) \
+ ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \
+ ? (void)0 \
+ : ::fmt::internal::assert_fail(__FILE__, __LINE__, (message)))
+# endif
+#endif
+
+#if defined(FMT_USE_STRING_VIEW)
+template <typename Char> using std_string_view = std::basic_string_view<Char>;
+#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW)
+template <typename Char>
+using std_string_view = std::experimental::basic_string_view<Char>;
+#else
+template <typename T> struct std_string_view {};
+#endif
+
+#ifdef FMT_USE_INT128
+// Do nothing.
+#elif defined(__SIZEOF_INT128__) && !FMT_NVCC
+# define FMT_USE_INT128 1
+using int128_t = __int128_t;
+using uint128_t = __uint128_t;
+#else
+# define FMT_USE_INT128 0
+#endif
+#if !FMT_USE_INT128
+struct int128_t {};
+struct uint128_t {};
+#endif
+
+// Casts a nonnegative integer to unsigned.
+template <typename Int>
+FMT_CONSTEXPR typename std::make_unsigned<Int>::type to_unsigned(Int value) {
+ FMT_ASSERT(value >= 0, "negative value");
+ return static_cast<typename std::make_unsigned<Int>::type>(value);
+}
+
+constexpr unsigned char micro[] = "\u00B5";
+
+template <typename Char> constexpr bool is_unicode() {
+ return FMT_UNICODE || sizeof(Char) != 1 ||
+ (sizeof(micro) == 3 && micro[0] == 0xC2 && micro[1] == 0xB5);
+}
+
+#ifdef __cpp_char8_t
+using char8_type = char8_t;
+#else
+enum char8_type : unsigned char {};
+#endif
+} // namespace internal
+
+template <typename... Ts>
+using void_t = typename internal::void_t_impl<Ts...>::type;
+
+/**
+ An implementation of ``std::basic_string_view`` for pre-C++17. It provides a
+ subset of the API. ``fmt::basic_string_view`` is used for format strings even
+ if ``std::string_view`` is available to prevent issues when a library is
+ compiled with a different ``-std`` option than the client code (which is not
+ recommended).
+ */
+template <typename Char> class basic_string_view {
+ private:
+ const Char* data_;
+ size_t size_;
+
+ public:
+ using char_type FMT_DEPRECATED_ALIAS = Char;
+ using value_type = Char;
+ using iterator = const Char*;
+
+ FMT_CONSTEXPR basic_string_view() FMT_NOEXCEPT : data_(nullptr), size_(0) {}
+
+ /** Constructs a string reference object from a C string and a size. */
+ FMT_CONSTEXPR basic_string_view(const Char* s, size_t count) FMT_NOEXCEPT
+ : data_(s),
+ size_(count) {}
+
+ /**
+ \rst
+ Constructs a string reference object from a C string computing
+ the size with ``std::char_traits<Char>::length``.
+ \endrst
+ */
+#if __cplusplus >= 201703L // C++17's char_traits::length() is constexpr.
+ FMT_CONSTEXPR
+#endif
+ basic_string_view(const Char* s)
+ : data_(s), size_(std::char_traits<Char>::length(s)) {}
+
+ /** Constructs a string reference from a ``std::basic_string`` object. */
+ template <typename Traits, typename Alloc>
+ FMT_CONSTEXPR basic_string_view(
+ const std::basic_string<Char, Traits, Alloc>& s) FMT_NOEXCEPT
+ : data_(s.data()),
+ size_(s.size()) {}
+
+ template <
+ typename S,
+ FMT_ENABLE_IF(std::is_same<S, internal::std_string_view<Char>>::value)>
+ FMT_CONSTEXPR basic_string_view(S s) FMT_NOEXCEPT : data_(s.data()),
+ size_(s.size()) {}
+
+ /** Returns a pointer to the string data. */
+ FMT_CONSTEXPR const Char* data() const { return data_; }
+
+ /** Returns the string size. */
+ FMT_CONSTEXPR size_t size() const { return size_; }
+
+ FMT_CONSTEXPR iterator begin() const { return data_; }
+ FMT_CONSTEXPR iterator end() const { return data_ + size_; }
+
+ FMT_CONSTEXPR const Char& operator[](size_t pos) const { return data_[pos]; }
+
+ FMT_CONSTEXPR void remove_prefix(size_t n) {
+ data_ += n;
+ size_ -= n;
+ }
+
+ // Lexicographically compare this string reference to other.
+ int compare(basic_string_view other) const {
+ size_t str_size = size_ < other.size_ ? size_ : other.size_;
+ int result = std::char_traits<Char>::compare(data_, other.data_, str_size);
+ if (result == 0)
+ result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1);
+ return result;
+ }
+
+ friend bool operator==(basic_string_view lhs, basic_string_view rhs) {
+ return lhs.compare(rhs) == 0;
+ }
+ friend bool operator!=(basic_string_view lhs, basic_string_view rhs) {
+ return lhs.compare(rhs) != 0;
+ }
+ friend bool operator<(basic_string_view lhs, basic_string_view rhs) {
+ return lhs.compare(rhs) < 0;
+ }
+ friend bool operator<=(basic_string_view lhs, basic_string_view rhs) {
+ return lhs.compare(rhs) <= 0;
+ }
+ friend bool operator>(basic_string_view lhs, basic_string_view rhs) {
+ return lhs.compare(rhs) > 0;
+ }
+ friend bool operator>=(basic_string_view lhs, basic_string_view rhs) {
+ return lhs.compare(rhs) >= 0;
+ }
+};
+
+using string_view = basic_string_view<char>;
+using wstring_view = basic_string_view<wchar_t>;
+
+#ifndef __cpp_char8_t
+// char8_t is deprecated; use char instead.
+using char8_t FMT_DEPRECATED_ALIAS = internal::char8_type;
+#endif
+
+/** Specifies if ``T`` is a character type. Can be specialized by users. */
+template <typename T> struct is_char : std::false_type {};
+template <> struct is_char<char> : std::true_type {};
+template <> struct is_char<wchar_t> : std::true_type {};
+template <> struct is_char<internal::char8_type> : std::true_type {};
+template <> struct is_char<char16_t> : std::true_type {};
+template <> struct is_char<char32_t> : std::true_type {};
+
+/**
+ \rst
+ Returns a string view of `s`. In order to add custom string type support to
+ {fmt} provide an overload of `to_string_view` for it in the same namespace as
+ the type for the argument-dependent lookup to work.
+
+ **Example**::
+
+ namespace my_ns {
+ inline string_view to_string_view(const my_string& s) {
+ return {s.data(), s.length()};
+ }
+ }
+ std::string message = fmt::format(my_string("The answer is {}"), 42);
+ \endrst
+ */
+template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)>
+inline basic_string_view<Char> to_string_view(const Char* s) {
+ return s;
+}
+
+template <typename Char, typename Traits, typename Alloc>
+inline basic_string_view<Char> to_string_view(
+ const std::basic_string<Char, Traits, Alloc>& s) {
+ return s;
+}
+
+template <typename Char>
+inline basic_string_view<Char> to_string_view(basic_string_view<Char> s) {
+ return s;
+}
+
+template <typename Char,
+ FMT_ENABLE_IF(!std::is_empty<internal::std_string_view<Char>>::value)>
+inline basic_string_view<Char> to_string_view(
+ internal::std_string_view<Char> s) {
+ return s;
+}
+
+// A base class for compile-time strings. It is defined in the fmt namespace to
+// make formatting functions visible via ADL, e.g. format(fmt("{}"), 42).
+struct compile_string {};
+
+template <typename S>
+struct is_compile_string : std::is_base_of<compile_string, S> {};
+
+template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)>
+constexpr basic_string_view<typename S::char_type> to_string_view(const S& s) {
+ return s;
+}
+
+namespace internal {
+void to_string_view(...);
+using fmt::v6::to_string_view;
+
+// Specifies whether S is a string type convertible to fmt::basic_string_view.
+// It should be a constexpr function but MSVC 2017 fails to compile it in
+// enable_if and MSVC 2015 fails to compile it as an alias template.
+template <typename S>
+struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> {
+};
+
+template <typename S, typename = void> struct char_t_impl {};
+template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> {
+ using result = decltype(to_string_view(std::declval<S>()));
+ using type = typename result::value_type;
+};
+
+struct error_handler {
+ FMT_CONSTEXPR error_handler() = default;
+ FMT_CONSTEXPR error_handler(const error_handler&) = default;
+
+ // This function is intentionally not constexpr to give a compile-time error.
+ FMT_NORETURN FMT_API void on_error(const char* message);
+};
+} // namespace internal
+
+/** String's character type. */
+template <typename S> using char_t = typename internal::char_t_impl<S>::type;
+
+/**
+ \rst
+ Parsing context consisting of a format string range being parsed and an
+ argument counter for automatic indexing.
+
+ You can use one of the following type aliases for common character types:
+
+ +-----------------------+-------------------------------------+
+ | Type | Definition |
+ +=======================+=====================================+
+ | format_parse_context | basic_format_parse_context<char> |
+ +-----------------------+-------------------------------------+
+ | wformat_parse_context | basic_format_parse_context<wchar_t> |
+ +-----------------------+-------------------------------------+
+ \endrst
+ */
+template <typename Char, typename ErrorHandler = internal::error_handler>
+class basic_format_parse_context : private ErrorHandler {
+ private:
+ basic_string_view<Char> format_str_;
+ int next_arg_id_;
+
+ public:
+ using char_type = Char;
+ using iterator = typename basic_string_view<Char>::iterator;
+
+ explicit FMT_CONSTEXPR basic_format_parse_context(
+ basic_string_view<Char> format_str, ErrorHandler eh = ErrorHandler())
+ : ErrorHandler(eh), format_str_(format_str), next_arg_id_(0) {}
+
+ /**
+ Returns an iterator to the beginning of the format string range being
+ parsed.
+ */
+ FMT_CONSTEXPR iterator begin() const FMT_NOEXCEPT {
+ return format_str_.begin();
+ }
+
+ /**
+ Returns an iterator past the end of the format string range being parsed.
+ */
+ FMT_CONSTEXPR iterator end() const FMT_NOEXCEPT { return format_str_.end(); }
+
+ /** Advances the begin iterator to ``it``. */
+ FMT_CONSTEXPR void advance_to(iterator it) {
+ format_str_.remove_prefix(internal::to_unsigned(it - begin()));
+ }
+
+ /**
+ Reports an error if using the manual argument indexing; otherwise returns
+ the next argument index and switches to the automatic indexing.
+ */
+ FMT_CONSTEXPR int next_arg_id() {
+ if (next_arg_id_ >= 0) return next_arg_id_++;
+ on_error("cannot switch from manual to automatic argument indexing");
+ return 0;
+ }
+
+ /**
+ Reports an error if using the automatic argument indexing; otherwise
+ switches to the manual indexing.
+ */
+ FMT_CONSTEXPR void check_arg_id(int) {
+ if (next_arg_id_ > 0)
+ on_error("cannot switch from automatic to manual argument indexing");
+ else
+ next_arg_id_ = -1;
+ }
+
+ FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {}
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ ErrorHandler::on_error(message);
+ }
+
+ FMT_CONSTEXPR ErrorHandler error_handler() const { return *this; }
+};
+
+using format_parse_context = basic_format_parse_context<char>;
+using wformat_parse_context = basic_format_parse_context<wchar_t>;
+
+template <typename Char, typename ErrorHandler = internal::error_handler>
+using basic_parse_context FMT_DEPRECATED_ALIAS =
+ basic_format_parse_context<Char, ErrorHandler>;
+using parse_context FMT_DEPRECATED_ALIAS = basic_format_parse_context<char>;
+using wparse_context FMT_DEPRECATED_ALIAS = basic_format_parse_context<wchar_t>;
+
+template <typename Context> class basic_format_arg;
+template <typename Context> class basic_format_args;
+
+// A formatter for objects of type T.
+template <typename T, typename Char = char, typename Enable = void>
+struct formatter {
+ // A deleted default constructor indicates a disabled formatter.
+ formatter() = delete;
+};
+
+template <typename T, typename Char, typename Enable = void>
+struct FMT_DEPRECATED convert_to_int
+ : bool_constant<!std::is_arithmetic<T>::value &&
+ std::is_convertible<T, int>::value> {};
+
+// Specifies if T has an enabled formatter specialization. A type can be
+// formattable even if it doesn't have a formatter e.g. via a conversion.
+template <typename T, typename Context>
+using has_formatter =
+ std::is_constructible<typename Context::template formatter_type<T>>;
+
+namespace internal {
+
+/** A contiguous memory buffer with an optional growing ability. */
+template <typename T> class buffer {
+ private:
+ T* ptr_;
+ std::size_t size_;
+ std::size_t capacity_;
+
+ protected:
+ // Don't initialize ptr_ since it is not accessed to save a few cycles.
+ buffer(std::size_t sz) FMT_NOEXCEPT : size_(sz), capacity_(sz) {}
+
+ buffer(T* p = nullptr, std::size_t sz = 0, std::size_t cap = 0) FMT_NOEXCEPT
+ : ptr_(p),
+ size_(sz),
+ capacity_(cap) {}
+
+ /** Sets the buffer data and capacity. */
+ void set(T* buf_data, std::size_t buf_capacity) FMT_NOEXCEPT {
+ ptr_ = buf_data;
+ capacity_ = buf_capacity;
+ }
+
+ /** Increases the buffer capacity to hold at least *capacity* elements. */
+ virtual void grow(std::size_t capacity) = 0;
+
+ public:
+ using value_type = T;
+ using const_reference = const T&;
+
+ buffer(const buffer&) = delete;
+ void operator=(const buffer&) = delete;
+ virtual ~buffer() = default;
+
+ T* begin() FMT_NOEXCEPT { return ptr_; }
+ T* end() FMT_NOEXCEPT { return ptr_ + size_; }
+
+ const T* begin() const FMT_NOEXCEPT { return ptr_; }
+ const T* end() const FMT_NOEXCEPT { return ptr_ + size_; }
+
+ /** Returns the size of this buffer. */
+ std::size_t size() const FMT_NOEXCEPT { return size_; }
+
+ /** Returns the capacity of this buffer. */
+ std::size_t capacity() const FMT_NOEXCEPT { return capacity_; }
+
+ /** Returns a pointer to the buffer data. */
+ T* data() FMT_NOEXCEPT { return ptr_; }
+
+ /** Returns a pointer to the buffer data. */
+ const T* data() const FMT_NOEXCEPT { return ptr_; }
+
+ /**
+ Resizes the buffer. If T is a POD type new elements may not be initialized.
+ */
+ void resize(std::size_t new_size) {
+ reserve(new_size);
+ size_ = new_size;
+ }
+
+ /** Clears this buffer. */
+ void clear() { size_ = 0; }
+
+ /** Reserves space to store at least *capacity* elements. */
+ void reserve(std::size_t new_capacity) {
+ if (new_capacity > capacity_) grow(new_capacity);
+ }
+
+ void push_back(const T& value) {
+ reserve(size_ + 1);
+ ptr_[size_++] = value;
+ }
+
+ /** Appends data to the end of the buffer. */
+ template <typename U> void append(const U* begin, const U* end);
+
+ template <typename I> T& operator[](I index) { return ptr_[index]; }
+ template <typename I> const T& operator[](I index) const {
+ return ptr_[index];
+ }
+};
+
+// A container-backed buffer.
+template <typename Container>
+class container_buffer : public buffer<typename Container::value_type> {
+ private:
+ Container& container_;
+
+ protected:
+ void grow(std::size_t capacity) FMT_OVERRIDE {
+ container_.resize(capacity);
+ this->set(&container_[0], capacity);
+ }
+
+ public:
+ explicit container_buffer(Container& c)
+ : buffer<typename Container::value_type>(c.size()), container_(c) {}
+};
+
+// Extracts a reference to the container from back_insert_iterator.
+template <typename Container>
+inline Container& get_container(std::back_insert_iterator<Container> it) {
+ using bi_iterator = std::back_insert_iterator<Container>;
+ struct accessor : bi_iterator {
+ accessor(bi_iterator iter) : bi_iterator(iter) {}
+ using bi_iterator::container;
+ };
+ return *accessor(it).container;
+}
+
+template <typename T, typename Char = char, typename Enable = void>
+struct fallback_formatter {
+ fallback_formatter() = delete;
+};
+
+// Specifies if T has an enabled fallback_formatter specialization.
+template <typename T, typename Context>
+using has_fallback_formatter =
+ std::is_constructible<fallback_formatter<T, typename Context::char_type>>;
+
+template <typename Char> struct named_arg_base;
+template <typename T, typename Char> struct named_arg;
+
+enum class type {
+ none_type,
+ named_arg_type,
+ // Integer types should go first,
+ int_type,
+ uint_type,
+ long_long_type,
+ ulong_long_type,
+ int128_type,
+ uint128_type,
+ bool_type,
+ char_type,
+ last_integer_type = char_type,
+ // followed by floating-point types.
+ float_type,
+ double_type,
+ long_double_type,
+ last_numeric_type = long_double_type,
+ cstring_type,
+ string_type,
+ pointer_type,
+ custom_type
+};
+
+// Maps core type T to the corresponding type enum constant.
+template <typename T, typename Char>
+struct type_constant : std::integral_constant<type, type::custom_type> {};
+
+#define FMT_TYPE_CONSTANT(Type, constant) \
+ template <typename Char> \
+ struct type_constant<Type, Char> \
+ : std::integral_constant<type, type::constant> {}
+
+FMT_TYPE_CONSTANT(const named_arg_base<Char>&, named_arg_type);
+FMT_TYPE_CONSTANT(int, int_type);
+FMT_TYPE_CONSTANT(unsigned, uint_type);
+FMT_TYPE_CONSTANT(long long, long_long_type);
+FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type);
+FMT_TYPE_CONSTANT(int128_t, int128_type);
+FMT_TYPE_CONSTANT(uint128_t, uint128_type);
+FMT_TYPE_CONSTANT(bool, bool_type);
+FMT_TYPE_CONSTANT(Char, char_type);
+FMT_TYPE_CONSTANT(float, float_type);
+FMT_TYPE_CONSTANT(double, double_type);
+FMT_TYPE_CONSTANT(long double, long_double_type);
+FMT_TYPE_CONSTANT(const Char*, cstring_type);
+FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type);
+FMT_TYPE_CONSTANT(const void*, pointer_type);
+
+FMT_CONSTEXPR bool is_integral_type(type t) {
+ FMT_ASSERT(t != type::named_arg_type, "invalid argument type");
+ return t > type::none_type && t <= type::last_integer_type;
+}
+
+FMT_CONSTEXPR bool is_arithmetic_type(type t) {
+ FMT_ASSERT(t != type::named_arg_type, "invalid argument type");
+ return t > type::none_type && t <= type::last_numeric_type;
+}
+
+template <typename Char> struct string_value {
+ const Char* data;
+ std::size_t size;
+};
+
+template <typename Context> struct custom_value {
+ using parse_context = basic_format_parse_context<typename Context::char_type>;
+ const void* value;
+ void (*format)(const void* arg,
+ typename Context::parse_context_type& parse_ctx, Context& ctx);
+};
+
+// A formatting argument value.
+template <typename Context> class value {
+ public:
+ using char_type = typename Context::char_type;
+
+ union {
+ int int_value;
+ unsigned uint_value;
+ long long long_long_value;
+ unsigned long long ulong_long_value;
+ int128_t int128_value;
+ uint128_t uint128_value;
+ bool bool_value;
+ char_type char_value;
+ float float_value;
+ double double_value;
+ long double long_double_value;
+ const void* pointer;
+ string_value<char_type> string;
+ custom_value<Context> custom;
+ const named_arg_base<char_type>* named_arg;
+ };
+
+ FMT_CONSTEXPR value(int val = 0) : int_value(val) {}
+ FMT_CONSTEXPR value(unsigned val) : uint_value(val) {}
+ value(long long val) : long_long_value(val) {}
+ value(unsigned long long val) : ulong_long_value(val) {}
+ value(int128_t val) : int128_value(val) {}
+ value(uint128_t val) : uint128_value(val) {}
+ value(float val) : float_value(val) {}
+ value(double val) : double_value(val) {}
+ value(long double val) : long_double_value(val) {}
+ value(bool val) : bool_value(val) {}
+ value(char_type val) : char_value(val) {}
+ value(const char_type* val) { string.data = val; }
+ value(basic_string_view<char_type> val) {
+ string.data = val.data();
+ string.size = val.size();
+ }
+ value(const void* val) : pointer(val) {}
+
+ template <typename T> value(const T& val) {
+ custom.value = &val;
+ // Get the formatter type through the context to allow different contexts
+ // have different extension points, e.g. `formatter<T>` for `format` and
+ // `printf_formatter<T>` for `printf`.
+ custom.format = format_custom_arg<
+ T, conditional_t<has_formatter<T, Context>::value,
+ typename Context::template formatter_type<T>,
+ fallback_formatter<T, char_type>>>;
+ }
+
+ value(const named_arg_base<char_type>& val) { named_arg = &val; }
+
+ private:
+ // Formats an argument of a custom type, such as a user-defined class.
+ template <typename T, typename Formatter>
+ static void format_custom_arg(const void* arg,
+ typename Context::parse_context_type& parse_ctx,
+ Context& ctx) {
+ Formatter f;
+ parse_ctx.advance_to(f.parse(parse_ctx));
+ ctx.advance_to(f.format(*static_cast<const T*>(arg), ctx));
+ }
+};
+
+template <typename Context, typename T>
+FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value);
+
+// To minimize the number of types we need to deal with, long is translated
+// either to int or to long long depending on its size.
+enum { long_short = sizeof(long) == sizeof(int) };
+using long_type = conditional_t<long_short, int, long long>;
+using ulong_type = conditional_t<long_short, unsigned, unsigned long long>;
+
+// Maps formatting arguments to core types.
+template <typename Context> struct arg_mapper {
+ using char_type = typename Context::char_type;
+
+ FMT_CONSTEXPR int map(signed char val) { return val; }
+ FMT_CONSTEXPR unsigned map(unsigned char val) { return val; }
+ FMT_CONSTEXPR int map(short val) { return val; }
+ FMT_CONSTEXPR unsigned map(unsigned short val) { return val; }
+ FMT_CONSTEXPR int map(int val) { return val; }
+ FMT_CONSTEXPR unsigned map(unsigned val) { return val; }
+ FMT_CONSTEXPR long_type map(long val) { return val; }
+ FMT_CONSTEXPR ulong_type map(unsigned long val) { return val; }
+ FMT_CONSTEXPR long long map(long long val) { return val; }
+ FMT_CONSTEXPR unsigned long long map(unsigned long long val) { return val; }
+ FMT_CONSTEXPR int128_t map(int128_t val) { return val; }
+ FMT_CONSTEXPR uint128_t map(uint128_t val) { return val; }
+ FMT_CONSTEXPR bool map(bool val) { return val; }
+
+ template <typename T, FMT_ENABLE_IF(is_char<T>::value)>
+ FMT_CONSTEXPR char_type map(T val) {
+ static_assert(
+ std::is_same<T, char>::value || std::is_same<T, char_type>::value,
+ "mixing character types is disallowed");
+ return val;
+ }
+
+ FMT_CONSTEXPR float map(float val) { return val; }
+ FMT_CONSTEXPR double map(double val) { return val; }
+ FMT_CONSTEXPR long double map(long double val) { return val; }
+
+ FMT_CONSTEXPR const char_type* map(char_type* val) { return val; }
+ FMT_CONSTEXPR const char_type* map(const char_type* val) { return val; }
+ template <typename T, FMT_ENABLE_IF(is_string<T>::value)>
+ FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) {
+ static_assert(std::is_same<char_type, char_t<T>>::value,
+ "mixing character types is disallowed");
+ return to_string_view(val);
+ }
+ template <typename T,
+ FMT_ENABLE_IF(
+ std::is_constructible<basic_string_view<char_type>, T>::value &&
+ !is_string<T>::value && !has_formatter<T, Context>::value &&
+ !has_fallback_formatter<T, Context>::value)>
+ FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) {
+ return basic_string_view<char_type>(val);
+ }
+ template <
+ typename T,
+ FMT_ENABLE_IF(
+ std::is_constructible<std_string_view<char_type>, T>::value &&
+ !std::is_constructible<basic_string_view<char_type>, T>::value &&
+ !is_string<T>::value && !has_formatter<T, Context>::value &&
+ !has_fallback_formatter<T, Context>::value)>
+ FMT_CONSTEXPR basic_string_view<char_type> map(const T& val) {
+ return std_string_view<char_type>(val);
+ }
+ FMT_CONSTEXPR const char* map(const signed char* val) {
+ static_assert(std::is_same<char_type, char>::value, "invalid string type");
+ return reinterpret_cast<const char*>(val);
+ }
+ FMT_CONSTEXPR const char* map(const unsigned char* val) {
+ static_assert(std::is_same<char_type, char>::value, "invalid string type");
+ return reinterpret_cast<const char*>(val);
+ }
+
+ FMT_CONSTEXPR const void* map(void* val) { return val; }
+ FMT_CONSTEXPR const void* map(const void* val) { return val; }
+ FMT_CONSTEXPR const void* map(std::nullptr_t val) { return val; }
+ template <typename T> FMT_CONSTEXPR int map(const T*) {
+ // Formatting of arbitrary pointers is disallowed. If you want to output
+ // a pointer cast it to "void *" or "const void *". In particular, this
+ // forbids formatting of "[const] volatile char *" which is printed as bool
+ // by iostreams.
+ static_assert(!sizeof(T), "formatting of non-void pointers is disallowed");
+ return 0;
+ }
+
+ template <typename T,
+ FMT_ENABLE_IF(std::is_enum<T>::value &&
+ !has_formatter<T, Context>::value &&
+ !has_fallback_formatter<T, Context>::value)>
+ FMT_CONSTEXPR auto map(const T& val)
+ -> decltype(std::declval<arg_mapper>().map(
+ static_cast<typename std::underlying_type<T>::type>(val))) {
+ return map(static_cast<typename std::underlying_type<T>::type>(val));
+ }
+ template <typename T,
+ FMT_ENABLE_IF(!is_string<T>::value && !is_char<T>::value &&
+ (has_formatter<T, Context>::value ||
+ has_fallback_formatter<T, Context>::value))>
+ FMT_CONSTEXPR const T& map(const T& val) {
+ return val;
+ }
+
+ template <typename T>
+ FMT_CONSTEXPR const named_arg_base<char_type>& map(
+ const named_arg<T, char_type>& val) {
+ auto arg = make_arg<Context>(val.value);
+ std::memcpy(val.data, &arg, sizeof(arg));
+ return val;
+ }
+
+ int map(...) {
+ constexpr bool formattable = sizeof(Context) == 0;
+ static_assert(
+ formattable,
+ "Cannot format argument. To make type T formattable provide a "
+ "formatter<T> specialization: "
+ "https://fmt.dev/latest/api.html#formatting-user-defined-types");
+ return 0;
+ }
+};
+
+// A type constant after applying arg_mapper<Context>.
+template <typename T, typename Context>
+using mapped_type_constant =
+ type_constant<decltype(arg_mapper<Context>().map(std::declval<const T&>())),
+ typename Context::char_type>;
+
+enum { packed_arg_bits = 5 };
+// Maximum number of arguments with packed types.
+enum { max_packed_args = 63 / packed_arg_bits };
+enum : unsigned long long { is_unpacked_bit = 1ULL << 63 };
+
+template <typename Context> class arg_map;
+} // namespace internal
+
+// A formatting argument. It is a trivially copyable/constructible type to
+// allow storage in basic_memory_buffer.
+template <typename Context> class basic_format_arg {
+ private:
+ internal::value<Context> value_;
+ internal::type type_;
+
+ template <typename ContextType, typename T>
+ friend FMT_CONSTEXPR basic_format_arg<ContextType> internal::make_arg(
+ const T& value);
+
+ template <typename Visitor, typename Ctx>
+ friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis,
+ const basic_format_arg<Ctx>& arg)
+ -> decltype(vis(0));
+
+ friend class basic_format_args<Context>;
+ friend class internal::arg_map<Context>;
+
+ using char_type = typename Context::char_type;
+
+ public:
+ class handle {
+ public:
+ explicit handle(internal::custom_value<Context> custom) : custom_(custom) {}
+
+ void format(typename Context::parse_context_type& parse_ctx,
+ Context& ctx) const {
+ custom_.format(custom_.value, parse_ctx, ctx);
+ }
+
+ private:
+ internal::custom_value<Context> custom_;
+ };
+
+ FMT_CONSTEXPR basic_format_arg() : type_(internal::type::none_type) {}
+
+ FMT_CONSTEXPR explicit operator bool() const FMT_NOEXCEPT {
+ return type_ != internal::type::none_type;
+ }
+
+ internal::type type() const { return type_; }
+
+ bool is_integral() const { return internal::is_integral_type(type_); }
+ bool is_arithmetic() const { return internal::is_arithmetic_type(type_); }
+};
+
+/**
+ \rst
+ Visits an argument dispatching to the appropriate visit method based on
+ the argument type. For example, if the argument type is ``double`` then
+ ``vis(value)`` will be called with the value of type ``double``.
+ \endrst
+ */
+template <typename Visitor, typename Context>
+FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis,
+ const basic_format_arg<Context>& arg)
+ -> decltype(vis(0)) {
+ using char_type = typename Context::char_type;
+ switch (arg.type_) {
+ case internal::type::none_type:
+ break;
+ case internal::type::named_arg_type:
+ FMT_ASSERT(false, "invalid argument type");
+ break;
+ case internal::type::int_type:
+ return vis(arg.value_.int_value);
+ case internal::type::uint_type:
+ return vis(arg.value_.uint_value);
+ case internal::type::long_long_type:
+ return vis(arg.value_.long_long_value);
+ case internal::type::ulong_long_type:
+ return vis(arg.value_.ulong_long_value);
+#if FMT_USE_INT128
+ case internal::type::int128_type:
+ return vis(arg.value_.int128_value);
+ case internal::type::uint128_type:
+ return vis(arg.value_.uint128_value);
+#else
+ case internal::type::int128_type:
+ case internal::type::uint128_type:
+ break;
+#endif
+ case internal::type::bool_type:
+ return vis(arg.value_.bool_value);
+ case internal::type::char_type:
+ return vis(arg.value_.char_value);
+ case internal::type::float_type:
+ return vis(arg.value_.float_value);
+ case internal::type::double_type:
+ return vis(arg.value_.double_value);
+ case internal::type::long_double_type:
+ return vis(arg.value_.long_double_value);
+ case internal::type::cstring_type:
+ return vis(arg.value_.string.data);
+ case internal::type::string_type:
+ return vis(basic_string_view<char_type>(arg.value_.string.data,
+ arg.value_.string.size));
+ case internal::type::pointer_type:
+ return vis(arg.value_.pointer);
+ case internal::type::custom_type:
+ return vis(typename basic_format_arg<Context>::handle(arg.value_.custom));
+ }
+ return vis(monostate());
+}
+
+namespace internal {
+// A map from argument names to their values for named arguments.
+template <typename Context> class arg_map {
+ private:
+ using char_type = typename Context::char_type;
+
+ struct entry {
+ basic_string_view<char_type> name;
+ basic_format_arg<Context> arg;
+ };
+
+ entry* map_;
+ unsigned size_;
+
+ void push_back(value<Context> val) {
+ const auto& named = *val.named_arg;
+ map_[size_] = {named.name, named.template deserialize<Context>()};
+ ++size_;
+ }
+
+ public:
+ arg_map(const arg_map&) = delete;
+ void operator=(const arg_map&) = delete;
+ arg_map() : map_(nullptr), size_(0) {}
+ void init(const basic_format_args<Context>& args);
+ ~arg_map() { delete[] map_; }
+
+ basic_format_arg<Context> find(basic_string_view<char_type> name) const {
+ // The list is unsorted, so just return the first matching name.
+ for (entry *it = map_, *end = map_ + size_; it != end; ++it) {
+ if (it->name == name) return it->arg;
+ }
+ return {};
+ }
+};
+
+// A type-erased reference to an std::locale to avoid heavy <locale> include.
+class locale_ref {
+ private:
+ const void* locale_; // A type-erased pointer to std::locale.
+
+ public:
+ locale_ref() : locale_(nullptr) {}
+ template <typename Locale> explicit locale_ref(const Locale& loc);
+
+ explicit operator bool() const FMT_NOEXCEPT { return locale_ != nullptr; }
+
+ template <typename Locale> Locale get() const;
+};
+
+template <typename> constexpr unsigned long long encode_types() { return 0; }
+
+template <typename Context, typename Arg, typename... Args>
+constexpr unsigned long long encode_types() {
+ return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) |
+ (encode_types<Context, Args...>() << packed_arg_bits);
+}
+
+template <typename Context, typename T>
+FMT_CONSTEXPR basic_format_arg<Context> make_arg(const T& value) {
+ basic_format_arg<Context> arg;
+ arg.type_ = mapped_type_constant<T, Context>::value;
+ arg.value_ = arg_mapper<Context>().map(value);
+ return arg;
+}
+
+// The type template parameter is there to avoid an ODR violation when using
+// a fallback formatter in one translation unit and an implicit conversion in
+// another (not recommended).
+template <bool IS_PACKED, typename Context, type, typename T,
+ FMT_ENABLE_IF(IS_PACKED)>
+inline value<Context> make_arg(const T& val) {
+ return arg_mapper<Context>().map(val);
+}
+
+template <bool IS_PACKED, typename Context, type, typename T,
+ FMT_ENABLE_IF(!IS_PACKED)>
+inline basic_format_arg<Context> make_arg(const T& value) {
+ return make_arg<Context>(value);
+}
+
+template <typename T> struct is_reference_wrapper : std::false_type {};
+
+template <typename T>
+struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {};
+
+class dynamic_arg_list {
+ // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
+ // templates it doesn't complain about inability to deduce single translation
+ // unit for placing vtable. So storage_node_base is made a fake template.
+ template <typename = void> struct node {
+ virtual ~node() = default;
+ std::unique_ptr<node<>> next;
+ };
+
+ template <typename T> struct typed_node : node<> {
+ T value;
+
+ template <typename Arg>
+ FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {}
+
+ template <typename Char>
+ FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg)
+ : value(arg.data(), arg.size()) {}
+ };
+
+ std::unique_ptr<node<>> head_;
+
+ public:
+ template <typename T, typename Arg> const T& push(const Arg& arg) {
+ auto node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg));
+ auto& value = node->value;
+ node->next = std::move(head_);
+ head_ = std::move(node);
+ return value;
+ }
+};
+} // namespace internal
+
+// Formatting context.
+template <typename OutputIt, typename Char> class basic_format_context {
+ public:
+ /** The character type for the output. */
+ using char_type = Char;
+
+ private:
+ OutputIt out_;
+ basic_format_args<basic_format_context> args_;
+ internal::arg_map<basic_format_context> map_;
+ internal::locale_ref loc_;
+
+ public:
+ using iterator = OutputIt;
+ using format_arg = basic_format_arg<basic_format_context>;
+ using parse_context_type = basic_format_parse_context<Char>;
+ template <typename T> using formatter_type = formatter<T, char_type>;
+
+ basic_format_context(const basic_format_context&) = delete;
+ void operator=(const basic_format_context&) = delete;
+ /**
+ Constructs a ``basic_format_context`` object. References to the arguments are
+ stored in the object so make sure they have appropriate lifetimes.
+ */
+ basic_format_context(OutputIt out,
+ basic_format_args<basic_format_context> ctx_args,
+ internal::locale_ref loc = internal::locale_ref())
+ : out_(out), args_(ctx_args), loc_(loc) {}
+
+ format_arg arg(int id) const { return args_.get(id); }
+
+ // Checks if manual indexing is used and returns the argument with the
+ // specified name.
+ format_arg arg(basic_string_view<char_type> name);
+
+ internal::error_handler error_handler() { return {}; }
+ void on_error(const char* message) { error_handler().on_error(message); }
+
+ // Returns an iterator to the beginning of the output range.
+ iterator out() { return out_; }
+
+ // Advances the begin iterator to ``it``.
+ void advance_to(iterator it) { out_ = it; }
+
+ internal::locale_ref locale() { return loc_; }
+};
+
+template <typename Char>
+using buffer_context =
+ basic_format_context<std::back_insert_iterator<internal::buffer<Char>>,
+ Char>;
+using format_context = buffer_context<char>;
+using wformat_context = buffer_context<wchar_t>;
+
+/**
+ \rst
+ An array of references to arguments. It can be implicitly converted into
+ `~fmt::basic_format_args` for passing into type-erased formatting functions
+ such as `~fmt::vformat`.
+ \endrst
+ */
+template <typename Context, typename... Args>
+class format_arg_store
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+ // Workaround a GCC template argument substitution bug.
+ : public basic_format_args<Context>
+#endif
+{
+ private:
+ static const size_t num_args = sizeof...(Args);
+ static const bool is_packed = num_args < internal::max_packed_args;
+
+ using value_type = conditional_t<is_packed, internal::value<Context>,
+ basic_format_arg<Context>>;
+
+ // If the arguments are not packed, add one more element to mark the end.
+ value_type data_[num_args + (num_args == 0 ? 1 : 0)];
+
+ friend class basic_format_args<Context>;
+
+ public:
+ static constexpr unsigned long long types =
+ is_packed ? internal::encode_types<Context, Args...>()
+ : internal::is_unpacked_bit | num_args;
+
+ format_arg_store(const Args&... args)
+ :
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+ basic_format_args<Context>(*this),
+#endif
+ data_{internal::make_arg<
+ is_packed, Context,
+ internal::mapped_type_constant<Args, Context>::value>(args)...} {
+ }
+};
+
+/**
+ \rst
+ Constructs an `~fmt::format_arg_store` object that contains references to
+ arguments and can be implicitly converted to `~fmt::format_args`. `Context`
+ can be omitted in which case it defaults to `~fmt::context`.
+ See `~fmt::arg` for lifetime considerations.
+ \endrst
+ */
+template <typename Context = format_context, typename... Args>
+inline format_arg_store<Context, Args...> make_format_args(
+ const Args&... args) {
+ return {args...};
+}
+
+/**
+ \rst
+ A dynamic version of `fmt::format_arg_store<>`.
+ It's equipped with a storage to potentially temporary objects which lifetime
+ could be shorter than the format arguments object.
+
+ It can be implicitly converted into `~fmt::basic_format_args` for passing
+ into type-erased formatting functions such as `~fmt::vformat`.
+ \endrst
+ */
+template <typename Context>
+class dynamic_format_arg_store
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+ // Workaround a GCC template argument substitution bug.
+ : public basic_format_args<Context>
+#endif
+{
+ private:
+ using char_type = typename Context::char_type;
+
+ template <typename T> struct need_copy {
+ static constexpr internal::type mapped_type =
+ internal::mapped_type_constant<T, Context>::value;
+
+ enum {
+ value = !(internal::is_reference_wrapper<T>::value ||
+ std::is_same<T, basic_string_view<char_type>>::value ||
+ std::is_same<T, internal::std_string_view<char_type>>::value ||
+ (mapped_type != internal::type::cstring_type &&
+ mapped_type != internal::type::string_type &&
+ mapped_type != internal::type::custom_type &&
+ mapped_type != internal::type::named_arg_type))
+ };
+ };
+
+ template <typename T>
+ using stored_type = conditional_t<internal::is_string<T>::value,
+ std::basic_string<char_type>, T>;
+
+ // Storage of basic_format_arg must be contiguous.
+ std::vector<basic_format_arg<Context>> data_;
+
+ // Storage of arguments not fitting into basic_format_arg must grow
+ // without relocation because items in data_ refer to it.
+ internal::dynamic_arg_list dynamic_args_;
+
+ friend class basic_format_args<Context>;
+
+ unsigned long long get_types() const {
+ return internal::is_unpacked_bit | data_.size();
+ }
+
+ template <typename T> void emplace_arg(const T& arg) {
+ data_.emplace_back(internal::make_arg<Context>(arg));
+ }
+
+ public:
+ /**
+ \rst
+ Adds an argument into the dynamic store for later passing to a formating
+ function.
+
+ Note that custom types and string types (but not string views!) are copied
+ into the store with dynamic memory (in addition to resizing vector).
+
+ **Example**::
+
+ fmt::dynamic_format_arg_store<fmt::format_context> store;
+ store.push_back(42);
+ store.push_back("abc");
+ store.push_back(1.5f);
+ std::string result = fmt::vformat("{} and {} and {}", store);
+ \endrst
+ */
+ template <typename T> void push_back(const T& arg) {
+ static_assert(
+ !std::is_base_of<internal::named_arg_base<char_type>, T>::value,
+ "named arguments are not supported yet");
+ if (internal::const_check(need_copy<T>::value))
+ emplace_arg(dynamic_args_.push<stored_type<T>>(arg));
+ else
+ emplace_arg(arg);
+ }
+
+ /**
+ Adds a reference to the argument into the dynamic store for later passing to
+ a formating function.
+ */
+ template <typename T> void push_back(std::reference_wrapper<T> arg) {
+ static_assert(
+ need_copy<T>::value,
+ "objects of built-in types and string views are always copied");
+ emplace_arg(arg.get());
+ }
+};
+
+/**
+ \rst
+ A view of a collection of formatting arguments. To avoid lifetime issues it
+ should only be used as a parameter type in type-erased functions such as
+ ``vformat``::
+
+ void vlog(string_view format_str, format_args args); // OK
+ format_args args = make_format_args(42); // Error: dangling reference
+ \endrst
+ */
+template <typename Context> class basic_format_args {
+ public:
+ using size_type = int;
+ using format_arg = basic_format_arg<Context>;
+
+ private:
+ // To reduce compiled code size per formatting function call, types of first
+ // max_packed_args arguments are passed in the types_ field.
+ unsigned long long types_;
+ union {
+ // If the number of arguments is less than max_packed_args, the argument
+ // values are stored in values_, otherwise they are stored in args_.
+ // This is done to reduce compiled code size as storing larger objects
+ // may require more code (at least on x86-64) even if the same amount of
+ // data is actually copied to stack. It saves ~10% on the bloat test.
+ const internal::value<Context>* values_;
+ const format_arg* args_;
+ };
+
+ bool is_packed() const { return (types_ & internal::is_unpacked_bit) == 0; }
+
+ internal::type type(int index) const {
+ int shift = index * internal::packed_arg_bits;
+ unsigned int mask = (1 << internal::packed_arg_bits) - 1;
+ return static_cast<internal::type>((types_ >> shift) & mask);
+ }
+
+ friend class internal::arg_map<Context>;
+
+ void set_data(const internal::value<Context>* values) { values_ = values; }
+ void set_data(const format_arg* args) { args_ = args; }
+
+ format_arg do_get(int index) const {
+ format_arg arg;
+ if (!is_packed()) {
+ auto num_args = max_size();
+ if (index < num_args) arg = args_[index];
+ return arg;
+ }
+ if (index > internal::max_packed_args) return arg;
+ arg.type_ = type(index);
+ if (arg.type_ == internal::type::none_type) return arg;
+ internal::value<Context>& val = arg.value_;
+ val = values_[index];
+ return arg;
+ }
+
+ public:
+ basic_format_args() : types_(0) {}
+
+ /**
+ \rst
+ Constructs a `basic_format_args` object from `~fmt::format_arg_store`.
+ \endrst
+ */
+ template <typename... Args>
+ basic_format_args(const format_arg_store<Context, Args...>& store)
+ : types_(store.types) {
+ set_data(store.data_);
+ }
+
+ /**
+ \rst
+ Constructs a `basic_format_args` object from
+ `~fmt::dynamic_format_arg_store`.
+ \endrst
+ */
+ basic_format_args(const dynamic_format_arg_store<Context>& store)
+ : types_(store.get_types()) {
+ set_data(store.data_.data());
+ }
+
+ /**
+ \rst
+ Constructs a `basic_format_args` object from a dynamic set of arguments.
+ \endrst
+ */
+ basic_format_args(const format_arg* args, int count)
+ : types_(internal::is_unpacked_bit | internal::to_unsigned(count)) {
+ set_data(args);
+ }
+
+ /** Returns the argument at specified index. */
+ format_arg get(int index) const {
+ format_arg arg = do_get(index);
+ if (arg.type_ == internal::type::named_arg_type)
+ arg = arg.value_.named_arg->template deserialize<Context>();
+ return arg;
+ }
+
+ int max_size() const {
+ unsigned long long max_packed = internal::max_packed_args;
+ return static_cast<int>(is_packed() ? max_packed
+ : types_ & ~internal::is_unpacked_bit);
+ }
+};
+
+/** An alias to ``basic_format_args<context>``. */
+// It is a separate type rather than an alias to make symbols readable.
+struct format_args : basic_format_args<format_context> {
+ template <typename... Args>
+ format_args(Args&&... args)
+ : basic_format_args<format_context>(static_cast<Args&&>(args)...) {}
+};
+struct wformat_args : basic_format_args<wformat_context> {
+ template <typename... Args>
+ wformat_args(Args&&... args)
+ : basic_format_args<wformat_context>(static_cast<Args&&>(args)...) {}
+};
+
+template <typename Container> struct is_contiguous : std::false_type {};
+
+template <typename Char>
+struct is_contiguous<std::basic_string<Char>> : std::true_type {};
+
+template <typename Char>
+struct is_contiguous<internal::buffer<Char>> : std::true_type {};
+
+namespace internal {
+
+template <typename OutputIt>
+struct is_contiguous_back_insert_iterator : std::false_type {};
+template <typename Container>
+struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>>
+ : is_contiguous<Container> {};
+
+template <typename Char> struct named_arg_base {
+ basic_string_view<Char> name;
+
+ // Serialized value<context>.
+ mutable char data[sizeof(basic_format_arg<buffer_context<Char>>)];
+
+ named_arg_base(basic_string_view<Char> nm) : name(nm) {}
+
+ template <typename Context> basic_format_arg<Context> deserialize() const {
+ basic_format_arg<Context> arg;
+ std::memcpy(&arg, data, sizeof(basic_format_arg<Context>));
+ return arg;
+ }
+};
+
+struct view {};
+
+template <typename T, typename Char>
+struct named_arg : view, named_arg_base<Char> {
+ const T& value;
+
+ named_arg(basic_string_view<Char> name, const T& val)
+ : named_arg_base<Char>(name), value(val) {}
+};
+
+template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)>
+inline void check_format_string(const S&) {
+#if defined(FMT_ENFORCE_COMPILE_STRING)
+ static_assert(is_compile_string<S>::value,
+ "FMT_ENFORCE_COMPILE_STRING requires all format strings to "
+ "utilize FMT_STRING() or fmt().");
+#endif
+}
+template <typename..., typename S, FMT_ENABLE_IF(is_compile_string<S>::value)>
+void check_format_string(S);
+
+template <bool...> struct bool_pack;
+template <bool... Args>
+using all_true =
+ std::is_same<bool_pack<Args..., true>, bool_pack<true, Args...>>;
+
+template <typename... Args, typename S, typename Char = char_t<S>>
+inline format_arg_store<buffer_context<Char>, remove_reference_t<Args>...>
+make_args_checked(const S& format_str,
+ const remove_reference_t<Args>&... args) {
+ static_assert(
+ all_true<(!std::is_base_of<view, remove_reference_t<Args>>::value ||
+ !std::is_reference<Args>::value)...>::value,
+ "passing views as lvalues is disallowed");
+ check_format_string<Args...>(format_str);
+ return {args...};
+}
+
+template <typename Char>
+std::basic_string<Char> vformat(
+ basic_string_view<Char> format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args);
+
+template <typename Char>
+typename buffer_context<Char>::iterator vformat_to(
+ buffer<Char>& buf, basic_string_view<Char> format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args);
+
+template <typename Char, typename Args,
+ FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
+inline void vprint_mojibake(std::FILE*, basic_string_view<Char>, const Args&) {}
+
+FMT_API void vprint_mojibake(std::FILE*, string_view, format_args);
+#ifndef _WIN32
+inline void vprint_mojibake(std::FILE*, string_view, format_args) {}
+#endif
+} // namespace internal
+
+/**
+ \rst
+ Returns a named argument to be used in a formatting function. It should only
+ be used in a call to a formatting function.
+
+ **Example**::
+
+ fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23));
+ \endrst
+ */
+template <typename S, typename T, typename Char = char_t<S>>
+inline internal::named_arg<T, Char> arg(const S& name, const T& arg) {
+ static_assert(internal::is_string<S>::value, "");
+ return {name, arg};
+}
+
+// Disable nested named arguments, e.g. ``arg("a", arg("b", 42))``.
+template <typename S, typename T, typename Char>
+void arg(S, internal::named_arg<T, Char>) = delete;
+
+/** Formats a string and writes the output to ``out``. */
+// GCC 8 and earlier cannot handle std::back_insert_iterator<Container> with
+// vformat_to<ArgFormatter>(...) overload, so SFINAE on iterator type instead.
+template <typename OutputIt, typename S, typename Char = char_t<S>,
+ FMT_ENABLE_IF(
+ internal::is_contiguous_back_insert_iterator<OutputIt>::value)>
+OutputIt vformat_to(
+ OutputIt out, const S& format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+ using container = remove_reference_t<decltype(internal::get_container(out))>;
+ internal::container_buffer<container> buf((internal::get_container(out)));
+ internal::vformat_to(buf, to_string_view(format_str), args);
+ return out;
+}
+
+template <typename Container, typename S, typename... Args,
+ FMT_ENABLE_IF(
+ is_contiguous<Container>::value&& internal::is_string<S>::value)>
+inline std::back_insert_iterator<Container> format_to(
+ std::back_insert_iterator<Container> out, const S& format_str,
+ Args&&... args) {
+ return vformat_to(out, to_string_view(format_str),
+ internal::make_args_checked<Args...>(format_str, args...));
+}
+
+template <typename S, typename Char = char_t<S>>
+inline std::basic_string<Char> vformat(
+ const S& format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+ return internal::vformat(to_string_view(format_str), args);
+}
+
+/**
+ \rst
+ Formats arguments and returns the result as a string.
+
+ **Example**::
+
+ #include <fmt/core.h>
+ std::string message = fmt::format("The answer is {}", 42);
+ \endrst
+*/
+// Pass char_t as a default template parameter instead of using
+// std::basic_string<char_t<S>> to reduce the symbol size.
+template <typename S, typename... Args, typename Char = char_t<S>>
+inline std::basic_string<Char> format(const S& format_str, Args&&... args) {
+ return internal::vformat(
+ to_string_view(format_str),
+ internal::make_args_checked<Args...>(format_str, args...));
+}
+
+FMT_API void vprint(string_view, format_args);
+FMT_API void vprint(std::FILE*, string_view, format_args);
+
+/**
+ \rst
+ Formats ``args`` according to specifications in ``format_str`` and writes the
+ output to the file ``f``. Strings are assumed to be Unicode-encoded unless the
+ ``FMT_UNICODE`` macro is set to 0.
+
+ **Example**::
+
+ fmt::print(stderr, "Don't {}!", "panic");
+ \endrst
+ */
+template <typename S, typename... Args, typename Char = char_t<S>>
+inline void print(std::FILE* f, const S& format_str, Args&&... args) {
+ return internal::is_unicode<Char>()
+ ? vprint(f, to_string_view(format_str),
+ internal::make_args_checked<Args...>(format_str, args...))
+ : internal::vprint_mojibake(
+ f, to_string_view(format_str),
+ internal::make_args_checked<Args...>(format_str, args...));
+}
+
+/**
+ \rst
+ Formats ``args`` according to specifications in ``format_str`` and writes
+ the output to ``stdout``. Strings are assumed to be Unicode-encoded unless
+ the ``FMT_UNICODE`` macro is set to 0.
+
+ **Example**::
+
+ fmt::print("Elapsed time: {0:.2f} seconds", 1.23);
+ \endrst
+ */
+template <typename S, typename... Args, typename Char = char_t<S>>
+inline void print(const S& format_str, Args&&... args) {
+ return internal::is_unicode<Char>()
+ ? vprint(to_string_view(format_str),
+ internal::make_args_checked<Args...>(format_str, args...))
+ : internal::vprint_mojibake(
+ stdout, to_string_view(format_str),
+ internal::make_args_checked<Args...>(format_str, args...));
+}
+FMT_END_NAMESPACE
+
+#endif // FMT_CORE_H_
diff --git a/GeoModelDBManager/fmt/format-inl.h b/GeoModelDBManager/fmt/format-inl.h
new file mode 100644
index 0000000000000000000000000000000000000000..f632714d81e9ae9855a686f657bef1c861f9ea3c
--- /dev/null
+++ b/GeoModelDBManager/fmt/format-inl.h
@@ -0,0 +1,1403 @@
+// Formatting library for C++ - implementation
+//
+// Copyright (c) 2012 - 2016, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_FORMAT_INL_H_
+#define FMT_FORMAT_INL_H_
+
+#include <cassert>
+#include <cctype>
+#include <climits>
+#include <cmath>
+#include <cstdarg>
+#include <cstring> // for std::memmove
+#include <cwchar>
+
+#include "format.h"
+#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
+# include <locale>
+#endif
+
+#ifdef _WIN32
+# include <io.h>
+# include <windows.h>
+#endif
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable : 4702) // unreachable code
+#endif
+
+// Dummy implementations of strerror_r and strerror_s called if corresponding
+// system functions are not available.
+inline fmt::internal::null<> strerror_r(int, char*, ...) { return {}; }
+inline fmt::internal::null<> strerror_s(char*, std::size_t, ...) { return {}; }
+
+FMT_BEGIN_NAMESPACE
+namespace internal {
+
+FMT_FUNC void assert_fail(const char* file, int line, const char* message) {
+ print(stderr, "{}:{}: assertion failed: {}", file, line, message);
+ std::abort();
+}
+
+#ifndef _MSC_VER
+# define FMT_SNPRINTF snprintf
+#else // _MSC_VER
+inline int fmt_snprintf(char* buffer, size_t size, const char* format, ...) {
+ va_list args;
+ va_start(args, format);
+ int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
+ va_end(args);
+ return result;
+}
+# define FMT_SNPRINTF fmt_snprintf
+#endif // _MSC_VER
+
+// A portable thread-safe version of strerror.
+// Sets buffer to point to a string describing the error code.
+// This can be either a pointer to a string stored in buffer,
+// or a pointer to some static immutable string.
+// Returns one of the following values:
+// 0 - success
+// ERANGE - buffer is not large enough to store the error message
+// other - failure
+// Buffer should be at least of size 1.
+FMT_FUNC int safe_strerror(int error_code, char*& buffer,
+ std::size_t buffer_size) FMT_NOEXCEPT {
+ FMT_ASSERT(buffer != nullptr && buffer_size != 0, "invalid buffer");
+
+ class dispatcher {
+ private:
+ int error_code_;
+ char*& buffer_;
+ std::size_t buffer_size_;
+
+ // A noop assignment operator to avoid bogus warnings.
+ void operator=(const dispatcher&) {}
+
+ // Handle the result of XSI-compliant version of strerror_r.
+ int handle(int result) {
+ // glibc versions before 2.13 return result in errno.
+ return result == -1 ? errno : result;
+ }
+
+ // Handle the result of GNU-specific version of strerror_r.
+ FMT_MAYBE_UNUSED
+ int handle(char* message) {
+ // If the buffer is full then the message is probably truncated.
+ if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
+ return ERANGE;
+ buffer_ = message;
+ return 0;
+ }
+
+ // Handle the case when strerror_r is not available.
+ FMT_MAYBE_UNUSED
+ int handle(internal::null<>) {
+ return fallback(strerror_s(buffer_, buffer_size_, error_code_));
+ }
+
+ // Fallback to strerror_s when strerror_r is not available.
+ FMT_MAYBE_UNUSED
+ int fallback(int result) {
+ // If the buffer is full then the message is probably truncated.
+ return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? ERANGE
+ : result;
+ }
+
+#if !FMT_MSC_VER
+ // Fallback to strerror if strerror_r and strerror_s are not available.
+ int fallback(internal::null<>) {
+ errno = 0;
+ buffer_ = strerror(error_code_);
+ return errno;
+ }
+#endif
+
+ public:
+ dispatcher(int err_code, char*& buf, std::size_t buf_size)
+ : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
+
+ int run() { return handle(strerror_r(error_code_, buffer_, buffer_size_)); }
+ };
+ return dispatcher(error_code, buffer, buffer_size).run();
+}
+
+FMT_FUNC void format_error_code(internal::buffer<char>& out, int error_code,
+ string_view message) FMT_NOEXCEPT {
+ // Report error code making sure that the output fits into
+ // inline_buffer_size to avoid dynamic memory allocation and potential
+ // bad_alloc.
+ out.resize(0);
+ static const char SEP[] = ": ";
+ static const char ERROR_STR[] = "error ";
+ // Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
+ std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
+ auto abs_value = static_cast<uint32_or_64_or_128_t<int>>(error_code);
+ if (internal::is_negative(error_code)) {
+ abs_value = 0 - abs_value;
+ ++error_code_size;
+ }
+ error_code_size += internal::to_unsigned(internal::count_digits(abs_value));
+ internal::writer w(out);
+ if (message.size() <= inline_buffer_size - error_code_size) {
+ w.write(message);
+ w.write(SEP);
+ }
+ w.write(ERROR_STR);
+ w.write(error_code);
+ assert(out.size() <= inline_buffer_size);
+}
+
+FMT_FUNC void report_error(format_func func, int error_code,
+ string_view message) FMT_NOEXCEPT {
+ memory_buffer full_message;
+ func(full_message, error_code, message);
+ // Don't use fwrite_fully because the latter may throw.
+ (void)std::fwrite(full_message.data(), full_message.size(), 1, stderr);
+ std::fputc('\n', stderr);
+}
+
+// A wrapper around fwrite that throws on error.
+FMT_FUNC void fwrite_fully(const void* ptr, size_t size, size_t count,
+ FILE* stream) {
+ size_t written = std::fwrite(ptr, size, count, stream);
+ if (written < count) FMT_THROW(system_error(errno, "cannot write to file"));
+}
+} // namespace internal
+
+#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
+namespace internal {
+
+template <typename Locale>
+locale_ref::locale_ref(const Locale& loc) : locale_(&loc) {
+ static_assert(std::is_same<Locale, std::locale>::value, "");
+}
+
+template <typename Locale> Locale locale_ref::get() const {
+ static_assert(std::is_same<Locale, std::locale>::value, "");
+ return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale();
+}
+
+template <typename Char> FMT_FUNC std::string grouping_impl(locale_ref loc) {
+ return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>()).grouping();
+}
+template <typename Char> FMT_FUNC Char thousands_sep_impl(locale_ref loc) {
+ return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
+ .thousands_sep();
+}
+template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) {
+ return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
+ .decimal_point();
+}
+} // namespace internal
+#else
+template <typename Char>
+FMT_FUNC std::string internal::grouping_impl(locale_ref) {
+ return "\03";
+}
+template <typename Char>
+FMT_FUNC Char internal::thousands_sep_impl(locale_ref) {
+ return FMT_STATIC_THOUSANDS_SEPARATOR;
+}
+template <typename Char>
+FMT_FUNC Char internal::decimal_point_impl(locale_ref) {
+ return '.';
+}
+#endif
+
+FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT = default;
+FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT = default;
+
+FMT_FUNC void system_error::init(int err_code, string_view format_str,
+ format_args args) {
+ error_code_ = err_code;
+ memory_buffer buffer;
+ format_system_error(buffer, err_code, vformat(format_str, args));
+ std::runtime_error& base = *this;
+ base = std::runtime_error(to_string(buffer));
+}
+
+namespace internal {
+
+template <> FMT_FUNC int count_digits<4>(internal::fallback_uintptr n) {
+ // fallback_uintptr is always stored in little endian.
+ int i = static_cast<int>(sizeof(void*)) - 1;
+ while (i > 0 && n.value[i] == 0) --i;
+ auto char_digits = std::numeric_limits<unsigned char>::digits / 4;
+ return i >= 0 ? i * char_digits + count_digits<4, unsigned>(n.value[i]) : 1;
+}
+
+template <typename T>
+const char basic_data<T>::digits[] =
+ "0001020304050607080910111213141516171819"
+ "2021222324252627282930313233343536373839"
+ "4041424344454647484950515253545556575859"
+ "6061626364656667686970717273747576777879"
+ "8081828384858687888990919293949596979899";
+
+template <typename T>
+const char basic_data<T>::hex_digits[] = "0123456789abcdef";
+
+#define FMT_POWERS_OF_10(factor) \
+ factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \
+ (factor)*1000000, (factor)*10000000, (factor)*100000000, \
+ (factor)*1000000000
+
+template <typename T>
+const uint64_t basic_data<T>::powers_of_10_64[] = {
+ 1, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL),
+ 10000000000000000000ULL};
+
+template <typename T>
+const uint32_t basic_data<T>::zero_or_powers_of_10_32[] = {0,
+ FMT_POWERS_OF_10(1)};
+
+template <typename T>
+const uint64_t basic_data<T>::zero_or_powers_of_10_64[] = {
+ 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL),
+ 10000000000000000000ULL};
+
+// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340.
+// These are generated by support/compute-powers.py.
+template <typename T>
+const uint64_t basic_data<T>::pow10_significands[] = {
+ 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76,
+ 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df,
+ 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c,
+ 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5,
+ 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57,
+ 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7,
+ 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e,
+ 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996,
+ 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126,
+ 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053,
+ 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f,
+ 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b,
+ 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06,
+ 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb,
+ 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000,
+ 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984,
+ 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068,
+ 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8,
+ 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758,
+ 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85,
+ 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d,
+ 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25,
+ 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2,
+ 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a,
+ 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410,
+ 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129,
+ 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85,
+ 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841,
+ 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b,
+};
+
+// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding
+// to significands above.
+template <typename T>
+const int16_t basic_data<T>::pow10_exponents[] = {
+ -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954,
+ -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661,
+ -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369,
+ -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77,
+ -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216,
+ 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508,
+ 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800,
+ 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066};
+
+template <typename T>
+const char basic_data<T>::foreground_color[] = "\x1b[38;2;";
+template <typename T>
+const char basic_data<T>::background_color[] = "\x1b[48;2;";
+template <typename T> const char basic_data<T>::reset_color[] = "\x1b[0m";
+template <typename T> const wchar_t basic_data<T>::wreset_color[] = L"\x1b[0m";
+template <typename T> const char basic_data<T>::signs[] = {0, '-', '+', ' '};
+
+template <typename T> struct bits {
+ static FMT_CONSTEXPR_DECL const int value =
+ static_cast<int>(sizeof(T) * std::numeric_limits<unsigned char>::digits);
+};
+
+class fp;
+template <int SHIFT = 0> fp normalize(fp value);
+
+// Lower (upper) boundary is a value half way between a floating-point value
+// and its predecessor (successor). Boundaries have the same exponent as the
+// value so only significands are stored.
+struct boundaries {
+ uint64_t lower;
+ uint64_t upper;
+};
+
+// A handmade floating-point number f * pow(2, e).
+class fp {
+ private:
+ using significand_type = uint64_t;
+
+ public:
+ significand_type f;
+ int e;
+
+ // All sizes are in bits.
+ // Subtract 1 to account for an implicit most significant bit in the
+ // normalized form.
+ static FMT_CONSTEXPR_DECL const int double_significand_size =
+ std::numeric_limits<double>::digits - 1;
+ static FMT_CONSTEXPR_DECL const uint64_t implicit_bit =
+ 1ULL << double_significand_size;
+ static FMT_CONSTEXPR_DECL const int significand_size =
+ bits<significand_type>::value;
+
+ fp() : f(0), e(0) {}
+ fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {}
+
+ // Constructs fp from an IEEE754 double. It is a template to prevent compile
+ // errors on platforms where double is not IEEE754.
+ template <typename Double> explicit fp(Double d) { assign(d); }
+
+ // Assigns d to this and return true iff predecessor is closer than successor.
+ template <typename Double, FMT_ENABLE_IF(sizeof(Double) == sizeof(uint64_t))>
+ bool assign(Double d) {
+ // Assume double is in the format [sign][exponent][significand].
+ using limits = std::numeric_limits<Double>;
+ const int exponent_size =
+ bits<Double>::value - double_significand_size - 1; // -1 for sign
+ const uint64_t significand_mask = implicit_bit - 1;
+ const uint64_t exponent_mask = (~0ULL >> 1) & ~significand_mask;
+ const int exponent_bias = (1 << exponent_size) - limits::max_exponent - 1;
+ auto u = bit_cast<uint64_t>(d);
+ f = u & significand_mask;
+ int biased_e =
+ static_cast<int>((u & exponent_mask) >> double_significand_size);
+ // Predecessor is closer if d is a normalized power of 2 (f == 0) other than
+ // the smallest normalized number (biased_e > 1).
+ bool is_predecessor_closer = f == 0 && biased_e > 1;
+ if (biased_e != 0)
+ f += implicit_bit;
+ else
+ biased_e = 1; // Subnormals use biased exponent 1 (min exponent).
+ e = biased_e - exponent_bias - double_significand_size;
+ return is_predecessor_closer;
+ }
+
+ template <typename Double, FMT_ENABLE_IF(sizeof(Double) != sizeof(uint64_t))>
+ bool assign(Double) {
+ *this = fp();
+ return false;
+ }
+
+ // Assigns d to this together with computing lower and upper boundaries,
+ // where a boundary is a value half way between the number and its predecessor
+ // (lower) or successor (upper). The upper boundary is normalized and lower
+ // has the same exponent but may be not normalized.
+ template <typename Double> boundaries assign_with_boundaries(Double d) {
+ bool is_lower_closer = assign(d);
+ fp lower =
+ is_lower_closer ? fp((f << 2) - 1, e - 2) : fp((f << 1) - 1, e - 1);
+ // 1 in normalize accounts for the exponent shift above.
+ fp upper = normalize<1>(fp((f << 1) + 1, e - 1));
+ lower.f <<= lower.e - upper.e;
+ return boundaries{lower.f, upper.f};
+ }
+
+ template <typename Double> boundaries assign_float_with_boundaries(Double d) {
+ assign(d);
+ constexpr int min_normal_e = std::numeric_limits<float>::min_exponent -
+ std::numeric_limits<double>::digits;
+ significand_type half_ulp = 1 << (std::numeric_limits<double>::digits -
+ std::numeric_limits<float>::digits - 1);
+ if (min_normal_e > e) half_ulp <<= min_normal_e - e;
+ fp upper = normalize<0>(fp(f + half_ulp, e));
+ fp lower = fp(
+ f - (half_ulp >> ((f == implicit_bit && e > min_normal_e) ? 1 : 0)), e);
+ lower.f <<= lower.e - upper.e;
+ return boundaries{lower.f, upper.f};
+ }
+};
+
+// Normalizes the value converted from double and multiplied by (1 << SHIFT).
+template <int SHIFT> fp normalize(fp value) {
+ // Handle subnormals.
+ const auto shifted_implicit_bit = fp::implicit_bit << SHIFT;
+ while ((value.f & shifted_implicit_bit) == 0) {
+ value.f <<= 1;
+ --value.e;
+ }
+ // Subtract 1 to account for hidden bit.
+ const auto offset =
+ fp::significand_size - fp::double_significand_size - SHIFT - 1;
+ value.f <<= offset;
+ value.e -= offset;
+ return value;
+}
+
+inline bool operator==(fp x, fp y) { return x.f == y.f && x.e == y.e; }
+
+// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking.
+inline uint64_t multiply(uint64_t lhs, uint64_t rhs) {
+#if FMT_USE_INT128
+ auto product = static_cast<__uint128_t>(lhs) * rhs;
+ auto f = static_cast<uint64_t>(product >> 64);
+ return (static_cast<uint64_t>(product) & (1ULL << 63)) != 0 ? f + 1 : f;
+#else
+ // Multiply 32-bit parts of significands.
+ uint64_t mask = (1ULL << 32) - 1;
+ uint64_t a = lhs >> 32, b = lhs & mask;
+ uint64_t c = rhs >> 32, d = rhs & mask;
+ uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d;
+ // Compute mid 64-bit of result and round.
+ uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31);
+ return ac + (ad >> 32) + (bc >> 32) + (mid >> 32);
+#endif
+}
+
+inline fp operator*(fp x, fp y) { return {multiply(x.f, y.f), x.e + y.e + 64}; }
+
+// Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its
+// (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`.
+inline fp get_cached_power(int min_exponent, int& pow10_exponent) {
+ const int64_t one_over_log2_10 = 0x4d104d42; // round(pow(2, 32) / log2(10))
+ int index = static_cast<int>(
+ ((min_exponent + fp::significand_size - 1) * one_over_log2_10 +
+ ((int64_t(1) << 32) - 1)) // ceil
+ >> 32 // arithmetic shift
+ );
+ // Decimal exponent of the first (smallest) cached power of 10.
+ const int first_dec_exp = -348;
+ // Difference between 2 consecutive decimal exponents in cached powers of 10.
+ const int dec_exp_step = 8;
+ index = (index - first_dec_exp - 1) / dec_exp_step + 1;
+ pow10_exponent = first_dec_exp + index * dec_exp_step;
+ return {data::pow10_significands[index], data::pow10_exponents[index]};
+}
+
+// A simple accumulator to hold the sums of terms in bigint::square if uint128_t
+// is not available.
+struct accumulator {
+ uint64_t lower;
+ uint64_t upper;
+
+ accumulator() : lower(0), upper(0) {}
+ explicit operator uint32_t() const { return static_cast<uint32_t>(lower); }
+
+ void operator+=(uint64_t n) {
+ lower += n;
+ if (lower < n) ++upper;
+ }
+ void operator>>=(int shift) {
+ assert(shift == 32);
+ (void)shift;
+ lower = (upper << 32) | (lower >> 32);
+ upper >>= 32;
+ }
+};
+
+class bigint {
+ private:
+ // A bigint is stored as an array of bigits (big digits), with bigit at index
+ // 0 being the least significant one.
+ using bigit = uint32_t;
+ using double_bigit = uint64_t;
+ enum { bigits_capacity = 32 };
+ basic_memory_buffer<bigit, bigits_capacity> bigits_;
+ int exp_;
+
+ bigit operator[](int index) const { return bigits_[to_unsigned(index)]; }
+ bigit& operator[](int index) { return bigits_[to_unsigned(index)]; }
+
+ static FMT_CONSTEXPR_DECL const int bigit_bits = bits<bigit>::value;
+
+ friend struct formatter<bigint>;
+
+ void subtract_bigits(int index, bigit other, bigit& borrow) {
+ auto result = static_cast<double_bigit>((*this)[index]) - other - borrow;
+ (*this)[index] = static_cast<bigit>(result);
+ borrow = static_cast<bigit>(result >> (bigit_bits * 2 - 1));
+ }
+
+ void remove_leading_zeros() {
+ int num_bigits = static_cast<int>(bigits_.size()) - 1;
+ while (num_bigits > 0 && (*this)[num_bigits] == 0) --num_bigits;
+ bigits_.resize(to_unsigned(num_bigits + 1));
+ }
+
+ // Computes *this -= other assuming aligned bigints and *this >= other.
+ void subtract_aligned(const bigint& other) {
+ FMT_ASSERT(other.exp_ >= exp_, "unaligned bigints");
+ FMT_ASSERT(compare(*this, other) >= 0, "");
+ bigit borrow = 0;
+ int i = other.exp_ - exp_;
+ for (size_t j = 0, n = other.bigits_.size(); j != n; ++i, ++j) {
+ subtract_bigits(i, other.bigits_[j], borrow);
+ }
+ while (borrow > 0) subtract_bigits(i, 0, borrow);
+ remove_leading_zeros();
+ }
+
+ void multiply(uint32_t value) {
+ const double_bigit wide_value = value;
+ bigit carry = 0;
+ for (size_t i = 0, n = bigits_.size(); i < n; ++i) {
+ double_bigit result = bigits_[i] * wide_value + carry;
+ bigits_[i] = static_cast<bigit>(result);
+ carry = static_cast<bigit>(result >> bigit_bits);
+ }
+ if (carry != 0) bigits_.push_back(carry);
+ }
+
+ void multiply(uint64_t value) {
+ const bigit mask = ~bigit(0);
+ const double_bigit lower = value & mask;
+ const double_bigit upper = value >> bigit_bits;
+ double_bigit carry = 0;
+ for (size_t i = 0, n = bigits_.size(); i < n; ++i) {
+ double_bigit result = bigits_[i] * lower + (carry & mask);
+ carry =
+ bigits_[i] * upper + (result >> bigit_bits) + (carry >> bigit_bits);
+ bigits_[i] = static_cast<bigit>(result);
+ }
+ while (carry != 0) {
+ bigits_.push_back(carry & mask);
+ carry >>= bigit_bits;
+ }
+ }
+
+ public:
+ bigint() : exp_(0) {}
+ explicit bigint(uint64_t n) { assign(n); }
+ ~bigint() { assert(bigits_.capacity() <= bigits_capacity); }
+
+ bigint(const bigint&) = delete;
+ void operator=(const bigint&) = delete;
+
+ void assign(const bigint& other) {
+ bigits_.resize(other.bigits_.size());
+ auto data = other.bigits_.data();
+ std::copy(data, data + other.bigits_.size(), bigits_.data());
+ exp_ = other.exp_;
+ }
+
+ void assign(uint64_t n) {
+ size_t num_bigits = 0;
+ do {
+ bigits_[num_bigits++] = n & ~bigit(0);
+ n >>= bigit_bits;
+ } while (n != 0);
+ bigits_.resize(num_bigits);
+ exp_ = 0;
+ }
+
+ int num_bigits() const { return static_cast<int>(bigits_.size()) + exp_; }
+
+ bigint& operator<<=(int shift) {
+ assert(shift >= 0);
+ exp_ += shift / bigit_bits;
+ shift %= bigit_bits;
+ if (shift == 0) return *this;
+ bigit carry = 0;
+ for (size_t i = 0, n = bigits_.size(); i < n; ++i) {
+ bigit c = bigits_[i] >> (bigit_bits - shift);
+ bigits_[i] = (bigits_[i] << shift) + carry;
+ carry = c;
+ }
+ if (carry != 0) bigits_.push_back(carry);
+ return *this;
+ }
+
+ template <typename Int> bigint& operator*=(Int value) {
+ FMT_ASSERT(value > 0, "");
+ multiply(uint32_or_64_or_128_t<Int>(value));
+ return *this;
+ }
+
+ friend int compare(const bigint& lhs, const bigint& rhs) {
+ int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits();
+ if (num_lhs_bigits != num_rhs_bigits)
+ return num_lhs_bigits > num_rhs_bigits ? 1 : -1;
+ int i = static_cast<int>(lhs.bigits_.size()) - 1;
+ int j = static_cast<int>(rhs.bigits_.size()) - 1;
+ int end = i - j;
+ if (end < 0) end = 0;
+ for (; i >= end; --i, --j) {
+ bigit lhs_bigit = lhs[i], rhs_bigit = rhs[j];
+ if (lhs_bigit != rhs_bigit) return lhs_bigit > rhs_bigit ? 1 : -1;
+ }
+ if (i != j) return i > j ? 1 : -1;
+ return 0;
+ }
+
+ // Returns compare(lhs1 + lhs2, rhs).
+ friend int add_compare(const bigint& lhs1, const bigint& lhs2,
+ const bigint& rhs) {
+ int max_lhs_bigits = (std::max)(lhs1.num_bigits(), lhs2.num_bigits());
+ int num_rhs_bigits = rhs.num_bigits();
+ if (max_lhs_bigits + 1 < num_rhs_bigits) return -1;
+ if (max_lhs_bigits > num_rhs_bigits) return 1;
+ auto get_bigit = [](const bigint& n, int i) -> bigit {
+ return i >= n.exp_ && i < n.num_bigits() ? n[i - n.exp_] : 0;
+ };
+ double_bigit borrow = 0;
+ int min_exp = (std::min)((std::min)(lhs1.exp_, lhs2.exp_), rhs.exp_);
+ for (int i = num_rhs_bigits - 1; i >= min_exp; --i) {
+ double_bigit sum =
+ static_cast<double_bigit>(get_bigit(lhs1, i)) + get_bigit(lhs2, i);
+ bigit rhs_bigit = get_bigit(rhs, i);
+ if (sum > rhs_bigit + borrow) return 1;
+ borrow = rhs_bigit + borrow - sum;
+ if (borrow > 1) return -1;
+ borrow <<= bigit_bits;
+ }
+ return borrow != 0 ? -1 : 0;
+ }
+
+ // Assigns pow(10, exp) to this bigint.
+ void assign_pow10(int exp) {
+ assert(exp >= 0);
+ if (exp == 0) return assign(1);
+ // Find the top bit.
+ int bitmask = 1;
+ while (exp >= bitmask) bitmask <<= 1;
+ bitmask >>= 1;
+ // pow(10, exp) = pow(5, exp) * pow(2, exp). First compute pow(5, exp) by
+ // repeated squaring and multiplication.
+ assign(5);
+ bitmask >>= 1;
+ while (bitmask != 0) {
+ square();
+ if ((exp & bitmask) != 0) *this *= 5;
+ bitmask >>= 1;
+ }
+ *this <<= exp; // Multiply by pow(2, exp) by shifting.
+ }
+
+ void square() {
+ basic_memory_buffer<bigit, bigits_capacity> n(std::move(bigits_));
+ int num_bigits = static_cast<int>(bigits_.size());
+ int num_result_bigits = 2 * num_bigits;
+ bigits_.resize(to_unsigned(num_result_bigits));
+ using accumulator_t = conditional_t<FMT_USE_INT128, uint128_t, accumulator>;
+ auto sum = accumulator_t();
+ for (int bigit_index = 0; bigit_index < num_bigits; ++bigit_index) {
+ // Compute bigit at position bigit_index of the result by adding
+ // cross-product terms n[i] * n[j] such that i + j == bigit_index.
+ for (int i = 0, j = bigit_index; j >= 0; ++i, --j) {
+ // Most terms are multiplied twice which can be optimized in the future.
+ sum += static_cast<double_bigit>(n[i]) * n[j];
+ }
+ (*this)[bigit_index] = static_cast<bigit>(sum);
+ sum >>= bits<bigit>::value; // Compute the carry.
+ }
+ // Do the same for the top half.
+ for (int bigit_index = num_bigits; bigit_index < num_result_bigits;
+ ++bigit_index) {
+ for (int j = num_bigits - 1, i = bigit_index - j; i < num_bigits;)
+ sum += static_cast<double_bigit>(n[i++]) * n[j--];
+ (*this)[bigit_index] = static_cast<bigit>(sum);
+ sum >>= bits<bigit>::value;
+ }
+ --num_result_bigits;
+ remove_leading_zeros();
+ exp_ *= 2;
+ }
+
+ // Divides this bignum by divisor, assigning the remainder to this and
+ // returning the quotient.
+ int divmod_assign(const bigint& divisor) {
+ FMT_ASSERT(this != &divisor, "");
+ if (compare(*this, divisor) < 0) return 0;
+ int num_bigits = static_cast<int>(bigits_.size());
+ FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, "");
+ int exp_difference = exp_ - divisor.exp_;
+ if (exp_difference > 0) {
+ // Align bigints by adding trailing zeros to simplify subtraction.
+ bigits_.resize(to_unsigned(num_bigits + exp_difference));
+ for (int i = num_bigits - 1, j = i + exp_difference; i >= 0; --i, --j)
+ bigits_[j] = bigits_[i];
+ std::uninitialized_fill_n(bigits_.data(), exp_difference, 0);
+ exp_ -= exp_difference;
+ }
+ int quotient = 0;
+ do {
+ subtract_aligned(divisor);
+ ++quotient;
+ } while (compare(*this, divisor) >= 0);
+ return quotient;
+ }
+};
+
+enum class round_direction { unknown, up, down };
+
+// Given the divisor (normally a power of 10), the remainder = v % divisor for
+// some number v and the error, returns whether v should be rounded up, down, or
+// whether the rounding direction can't be determined due to error.
+// error should be less than divisor / 2.
+inline round_direction get_round_direction(uint64_t divisor, uint64_t remainder,
+ uint64_t error) {
+ FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow.
+ FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow.
+ FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow.
+ // Round down if (remainder + error) * 2 <= divisor.
+ if (remainder <= divisor - remainder && error * 2 <= divisor - remainder * 2)
+ return round_direction::down;
+ // Round up if (remainder - error) * 2 >= divisor.
+ if (remainder >= error &&
+ remainder - error >= divisor - (remainder - error)) {
+ return round_direction::up;
+ }
+ return round_direction::unknown;
+}
+
+namespace digits {
+enum result {
+ more, // Generate more digits.
+ done, // Done generating digits.
+ error // Digit generation cancelled due to an error.
+};
+}
+
+// A version of count_digits optimized for grisu_gen_digits.
+inline int grisu_count_digits(uint32_t n) {
+ if (n < 10) return 1;
+ if (n < 100) return 2;
+ if (n < 1000) return 3;
+ if (n < 10000) return 4;
+ if (n < 100000) return 5;
+ if (n < 1000000) return 6;
+ if (n < 10000000) return 7;
+ if (n < 100000000) return 8;
+ if (n < 1000000000) return 9;
+ return 10;
+}
+
+// Generates output using the Grisu digit-gen algorithm.
+// error: the size of the region (lower, upper) outside of which numbers
+// definitely do not round to value (Delta in Grisu3).
+template <typename Handler>
+FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error,
+ int& exp, Handler& handler) {
+ const fp one(1ULL << -value.e, value.e);
+ // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be
+ // zero because it contains a product of two 64-bit numbers with MSB set (due
+ // to normalization) - 1, shifted right by at most 60 bits.
+ auto integral = static_cast<uint32_t>(value.f >> -one.e);
+ FMT_ASSERT(integral != 0, "");
+ FMT_ASSERT(integral == value.f >> -one.e, "");
+ // The fractional part of scaled value (p2 in Grisu) c = value % one.
+ uint64_t fractional = value.f & (one.f - 1);
+ exp = grisu_count_digits(integral); // kappa in Grisu.
+ // Divide by 10 to prevent overflow.
+ auto result = handler.on_start(data::powers_of_10_64[exp - 1] << -one.e,
+ value.f / 10, error * 10, exp);
+ if (result != digits::more) return result;
+ // Generate digits for the integral part. This can produce up to 10 digits.
+ do {
+ uint32_t digit = 0;
+ auto divmod_integral = [&](uint32_t divisor) {
+ digit = integral / divisor;
+ integral %= divisor;
+ };
+ // This optimization by Milo Yip reduces the number of integer divisions by
+ // one per iteration.
+ switch (exp) {
+ case 10:
+ divmod_integral(1000000000);
+ break;
+ case 9:
+ divmod_integral(100000000);
+ break;
+ case 8:
+ divmod_integral(10000000);
+ break;
+ case 7:
+ divmod_integral(1000000);
+ break;
+ case 6:
+ divmod_integral(100000);
+ break;
+ case 5:
+ divmod_integral(10000);
+ break;
+ case 4:
+ divmod_integral(1000);
+ break;
+ case 3:
+ divmod_integral(100);
+ break;
+ case 2:
+ divmod_integral(10);
+ break;
+ case 1:
+ digit = integral;
+ integral = 0;
+ break;
+ default:
+ FMT_ASSERT(false, "invalid number of digits");
+ }
+ --exp;
+ uint64_t remainder =
+ (static_cast<uint64_t>(integral) << -one.e) + fractional;
+ result = handler.on_digit(static_cast<char>('0' + digit),
+ data::powers_of_10_64[exp] << -one.e, remainder,
+ error, exp, true);
+ if (result != digits::more) return result;
+ } while (exp > 0);
+ // Generate digits for the fractional part.
+ for (;;) {
+ fractional *= 10;
+ error *= 10;
+ char digit =
+ static_cast<char>('0' + static_cast<char>(fractional >> -one.e));
+ fractional &= one.f - 1;
+ --exp;
+ result = handler.on_digit(digit, one.f, fractional, error, exp, false);
+ if (result != digits::more) return result;
+ }
+}
+
+// The fixed precision digit handler.
+struct fixed_handler {
+ char* buf;
+ int size;
+ int precision;
+ int exp10;
+ bool fixed;
+
+ digits::result on_start(uint64_t divisor, uint64_t remainder, uint64_t error,
+ int& exp) {
+ // Non-fixed formats require at least one digit and no precision adjustment.
+ if (!fixed) return digits::more;
+ // Adjust fixed precision by exponent because it is relative to decimal
+ // point.
+ precision += exp + exp10;
+ // Check if precision is satisfied just by leading zeros, e.g.
+ // format("{:.2f}", 0.001) gives "0.00" without generating any digits.
+ if (precision > 0) return digits::more;
+ if (precision < 0) return digits::done;
+ auto dir = get_round_direction(divisor, remainder, error);
+ if (dir == round_direction::unknown) return digits::error;
+ buf[size++] = dir == round_direction::up ? '1' : '0';
+ return digits::done;
+ }
+
+ digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder,
+ uint64_t error, int, bool integral) {
+ FMT_ASSERT(remainder < divisor, "");
+ buf[size++] = digit;
+ if (size < precision) return digits::more;
+ if (!integral) {
+ // Check if error * 2 < divisor with overflow prevention.
+ // The check is not needed for the integral part because error = 1
+ // and divisor > (1 << 32) there.
+ if (error >= divisor || error >= divisor - error) return digits::error;
+ } else {
+ FMT_ASSERT(error == 1 && divisor > 2, "");
+ }
+ auto dir = get_round_direction(divisor, remainder, error);
+ if (dir != round_direction::up)
+ return dir == round_direction::down ? digits::done : digits::error;
+ ++buf[size - 1];
+ for (int i = size - 1; i > 0 && buf[i] > '9'; --i) {
+ buf[i] = '0';
+ ++buf[i - 1];
+ }
+ if (buf[0] > '9') {
+ buf[0] = '1';
+ buf[size++] = '0';
+ }
+ return digits::done;
+ }
+};
+
+// The shortest representation digit handler.
+struct grisu_shortest_handler {
+ char* buf;
+ int size;
+ // Distance between scaled value and upper bound (wp_W in Grisu3).
+ uint64_t diff;
+
+ digits::result on_start(uint64_t, uint64_t, uint64_t, int&) {
+ return digits::more;
+ }
+
+ // Decrement the generated number approaching value from above.
+ void round(uint64_t d, uint64_t divisor, uint64_t& remainder,
+ uint64_t error) {
+ while (
+ remainder < d && error - remainder >= divisor &&
+ (remainder + divisor < d || d - remainder >= remainder + divisor - d)) {
+ --buf[size - 1];
+ remainder += divisor;
+ }
+ }
+
+ // Implements Grisu's round_weed.
+ digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder,
+ uint64_t error, int exp, bool integral) {
+ buf[size++] = digit;
+ if (remainder >= error) return digits::more;
+ uint64_t unit = integral ? 1 : data::powers_of_10_64[-exp];
+ uint64_t up = (diff - 1) * unit; // wp_Wup
+ round(up, divisor, remainder, error);
+ uint64_t down = (diff + 1) * unit; // wp_Wdown
+ if (remainder < down && error - remainder >= divisor &&
+ (remainder + divisor < down ||
+ down - remainder > remainder + divisor - down)) {
+ return digits::error;
+ }
+ return 2 * unit <= remainder && remainder <= error - 4 * unit
+ ? digits::done
+ : digits::error;
+ }
+};
+
+// Formats value using a variation of the Fixed-Precision Positive
+// Floating-Point Printout ((FPP)^2) algorithm by Steele & White:
+// https://fmt.dev/p372-steele.pdf.
+template <typename Double>
+void fallback_format(Double d, buffer<char>& buf, int& exp10) {
+ bigint numerator; // 2 * R in (FPP)^2.
+ bigint denominator; // 2 * S in (FPP)^2.
+ // lower and upper are differences between value and corresponding boundaries.
+ bigint lower; // (M^- in (FPP)^2).
+ bigint upper_store; // upper's value if different from lower.
+ bigint* upper = nullptr; // (M^+ in (FPP)^2).
+ fp value;
+ // Shift numerator and denominator by an extra bit or two (if lower boundary
+ // is closer) to make lower and upper integers. This eliminates multiplication
+ // by 2 during later computations.
+ // TODO: handle float
+ int shift = value.assign(d) ? 2 : 1;
+ uint64_t significand = value.f << shift;
+ if (value.e >= 0) {
+ numerator.assign(significand);
+ numerator <<= value.e;
+ lower.assign(1);
+ lower <<= value.e;
+ if (shift != 1) {
+ upper_store.assign(1);
+ upper_store <<= value.e + 1;
+ upper = &upper_store;
+ }
+ denominator.assign_pow10(exp10);
+ denominator <<= 1;
+ } else if (exp10 < 0) {
+ numerator.assign_pow10(-exp10);
+ lower.assign(numerator);
+ if (shift != 1) {
+ upper_store.assign(numerator);
+ upper_store <<= 1;
+ upper = &upper_store;
+ }
+ numerator *= significand;
+ denominator.assign(1);
+ denominator <<= shift - value.e;
+ } else {
+ numerator.assign(significand);
+ denominator.assign_pow10(exp10);
+ denominator <<= shift - value.e;
+ lower.assign(1);
+ if (shift != 1) {
+ upper_store.assign(1ULL << 1);
+ upper = &upper_store;
+ }
+ }
+ if (!upper) upper = &lower;
+ // Invariant: value == (numerator / denominator) * pow(10, exp10).
+ bool even = (value.f & 1) == 0;
+ int num_digits = 0;
+ char* data = buf.data();
+ for (;;) {
+ int digit = numerator.divmod_assign(denominator);
+ bool low = compare(numerator, lower) - even < 0; // numerator <[=] lower.
+ // numerator + upper >[=] pow10:
+ bool high = add_compare(numerator, *upper, denominator) + even > 0;
+ data[num_digits++] = static_cast<char>('0' + digit);
+ if (low || high) {
+ if (!low) {
+ ++data[num_digits - 1];
+ } else if (high) {
+ int result = add_compare(numerator, numerator, denominator);
+ // Round half to even.
+ if (result > 0 || (result == 0 && (digit % 2) != 0))
+ ++data[num_digits - 1];
+ }
+ buf.resize(to_unsigned(num_digits));
+ exp10 -= num_digits - 1;
+ return;
+ }
+ numerator *= 10;
+ lower *= 10;
+ if (upper != &lower) *upper *= 10;
+ }
+}
+
+// Formats value using the Grisu algorithm
+// (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf)
+// if T is a IEEE754 binary32 or binary64 and snprintf otherwise.
+template <typename T>
+int format_float(T value, int precision, float_specs specs, buffer<char>& buf) {
+ static_assert(!std::is_same<T, float>::value, "");
+ FMT_ASSERT(value >= 0, "value is negative");
+
+ const bool fixed = specs.format == float_format::fixed;
+ if (value <= 0) { // <= instead of == to silence a warning.
+ if (precision <= 0 || !fixed) {
+ buf.push_back('0');
+ return 0;
+ }
+ buf.resize(to_unsigned(precision));
+ std::uninitialized_fill_n(buf.data(), precision, '0');
+ return -precision;
+ }
+
+ if (!specs.use_grisu) return snprintf_float(value, precision, specs, buf);
+
+ int exp = 0;
+ const int min_exp = -60; // alpha in Grisu.
+ int cached_exp10 = 0; // K in Grisu.
+ if (precision < 0) {
+ fp fp_value;
+ auto boundaries = specs.binary32
+ ? fp_value.assign_float_with_boundaries(value)
+ : fp_value.assign_with_boundaries(value);
+ fp_value = normalize(fp_value);
+ // Find a cached power of 10 such that multiplying value by it will bring
+ // the exponent in the range [min_exp, -32].
+ const fp cached_pow = get_cached_power(
+ min_exp - (fp_value.e + fp::significand_size), cached_exp10);
+ // Multiply value and boundaries by the cached power of 10.
+ fp_value = fp_value * cached_pow;
+ boundaries.lower = multiply(boundaries.lower, cached_pow.f);
+ boundaries.upper = multiply(boundaries.upper, cached_pow.f);
+ assert(min_exp <= fp_value.e && fp_value.e <= -32);
+ --boundaries.lower; // \tilde{M}^- - 1 ulp -> M^-_{\downarrow}.
+ ++boundaries.upper; // \tilde{M}^+ + 1 ulp -> M^+_{\uparrow}.
+ // Numbers outside of (lower, upper) definitely do not round to value.
+ grisu_shortest_handler handler{buf.data(), 0,
+ boundaries.upper - fp_value.f};
+ auto result =
+ grisu_gen_digits(fp(boundaries.upper, fp_value.e),
+ boundaries.upper - boundaries.lower, exp, handler);
+ if (result == digits::error) {
+ exp += handler.size - cached_exp10 - 1;
+ fallback_format(value, buf, exp);
+ return exp;
+ }
+ buf.resize(to_unsigned(handler.size));
+ } else {
+ if (precision > 17) return snprintf_float(value, precision, specs, buf);
+ fp normalized = normalize(fp(value));
+ const auto cached_pow = get_cached_power(
+ min_exp - (normalized.e + fp::significand_size), cached_exp10);
+ normalized = normalized * cached_pow;
+ fixed_handler handler{buf.data(), 0, precision, -cached_exp10, fixed};
+ if (grisu_gen_digits(normalized, 1, exp, handler) == digits::error)
+ return snprintf_float(value, precision, specs, buf);
+ int num_digits = handler.size;
+ if (!fixed) {
+ // Remove trailing zeros.
+ while (num_digits > 0 && buf[num_digits - 1] == '0') {
+ --num_digits;
+ ++exp;
+ }
+ }
+ buf.resize(to_unsigned(num_digits));
+ }
+ return exp - cached_exp10;
+}
+
+template <typename T>
+int snprintf_float(T value, int precision, float_specs specs,
+ buffer<char>& buf) {
+ // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail.
+ FMT_ASSERT(buf.capacity() > buf.size(), "empty buffer");
+ static_assert(!std::is_same<T, float>::value, "");
+
+ // Subtract 1 to account for the difference in precision since we use %e for
+ // both general and exponent format.
+ if (specs.format == float_format::general ||
+ specs.format == float_format::exp)
+ precision = (precision >= 0 ? precision : 6) - 1;
+
+ // Build the format string.
+ enum { max_format_size = 7 }; // Ths longest format is "%#.*Le".
+ char format[max_format_size];
+ char* format_ptr = format;
+ *format_ptr++ = '%';
+ if (specs.showpoint && specs.format == float_format::hex) *format_ptr++ = '#';
+ if (precision >= 0) {
+ *format_ptr++ = '.';
+ *format_ptr++ = '*';
+ }
+ if (std::is_same<T, long double>()) *format_ptr++ = 'L';
+ *format_ptr++ = specs.format != float_format::hex
+ ? (specs.format == float_format::fixed ? 'f' : 'e')
+ : (specs.upper ? 'A' : 'a');
+ *format_ptr = '\0';
+
+ // Format using snprintf.
+ auto offset = buf.size();
+ for (;;) {
+ auto begin = buf.data() + offset;
+ auto capacity = buf.capacity() - offset;
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+ if (precision > 100000)
+ throw std::runtime_error(
+ "fuzz mode - avoid large allocation inside snprintf");
+#endif
+ // Suppress the warning about a nonliteral format string.
+ // Cannot use auto becase of a bug in MinGW (#1532).
+ int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF;
+ int result = precision >= 0
+ ? snprintf_ptr(begin, capacity, format, precision, value)
+ : snprintf_ptr(begin, capacity, format, value);
+ if (result < 0) {
+ buf.reserve(buf.capacity() + 1); // The buffer will grow exponentially.
+ continue;
+ }
+ auto size = to_unsigned(result);
+ // Size equal to capacity means that the last character was truncated.
+ if (size >= capacity) {
+ buf.reserve(size + offset + 1); // Add 1 for the terminating '\0'.
+ continue;
+ }
+ auto is_digit = [](char c) { return c >= '0' && c <= '9'; };
+ if (specs.format == float_format::fixed) {
+ if (precision == 0) {
+ buf.resize(size);
+ return 0;
+ }
+ // Find and remove the decimal point.
+ auto end = begin + size, p = end;
+ do {
+ --p;
+ } while (is_digit(*p));
+ int fraction_size = static_cast<int>(end - p - 1);
+ std::memmove(p, p + 1, to_unsigned(fraction_size));
+ buf.resize(size - 1);
+ return -fraction_size;
+ }
+ if (specs.format == float_format::hex) {
+ buf.resize(size + offset);
+ return 0;
+ }
+ // Find and parse the exponent.
+ auto end = begin + size, exp_pos = end;
+ do {
+ --exp_pos;
+ } while (*exp_pos != 'e');
+ char sign = exp_pos[1];
+ assert(sign == '+' || sign == '-');
+ int exp = 0;
+ auto p = exp_pos + 2; // Skip 'e' and sign.
+ do {
+ assert(is_digit(*p));
+ exp = exp * 10 + (*p++ - '0');
+ } while (p != end);
+ if (sign == '-') exp = -exp;
+ int fraction_size = 0;
+ if (exp_pos != begin + 1) {
+ // Remove trailing zeros.
+ auto fraction_end = exp_pos - 1;
+ while (*fraction_end == '0') --fraction_end;
+ // Move the fractional part left to get rid of the decimal point.
+ fraction_size = static_cast<int>(fraction_end - begin - 1);
+ std::memmove(begin + 1, begin + 2, to_unsigned(fraction_size));
+ }
+ buf.resize(to_unsigned(fraction_size) + offset + 1);
+ return exp - fraction_size;
+ }
+}
+
+// A public domain branchless UTF-8 decoder by Christopher Wellons:
+// https://github.com/skeeto/branchless-utf8
+/* Decode the next character, c, from buf, reporting errors in e.
+ *
+ * Since this is a branchless decoder, four bytes will be read from the
+ * buffer regardless of the actual length of the next character. This
+ * means the buffer _must_ have at least three bytes of zero padding
+ * following the end of the data stream.
+ *
+ * Errors are reported in e, which will be non-zero if the parsed
+ * character was somehow invalid: invalid byte sequence, non-canonical
+ * encoding, or a surrogate half.
+ *
+ * The function returns a pointer to the next character. When an error
+ * occurs, this pointer will be a guess that depends on the particular
+ * error, but it will always advance at least one byte.
+ */
+FMT_FUNC const char* utf8_decode(const char* buf, uint32_t* c, int* e) {
+ static const char lengths[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+ 0, 0, 2, 2, 2, 2, 3, 3, 4, 0};
+ static const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07};
+ static const uint32_t mins[] = {4194304, 0, 128, 2048, 65536};
+ static const int shiftc[] = {0, 18, 12, 6, 0};
+ static const int shifte[] = {0, 6, 4, 2, 0};
+
+ auto s = reinterpret_cast<const unsigned char*>(buf);
+ int len = lengths[s[0] >> 3];
+
+ // Compute the pointer to the next character early so that the next
+ // iteration can start working on the next character. Neither Clang
+ // nor GCC figure out this reordering on their own.
+ const char* next = buf + len + !len;
+
+ // Assume a four-byte character and load four bytes. Unused bits are
+ // shifted out.
+ *c = uint32_t(s[0] & masks[len]) << 18;
+ *c |= uint32_t(s[1] & 0x3f) << 12;
+ *c |= uint32_t(s[2] & 0x3f) << 6;
+ *c |= uint32_t(s[3] & 0x3f) << 0;
+ *c >>= shiftc[len];
+
+ // Accumulate the various error conditions.
+ *e = (*c < mins[len]) << 6; // non-canonical encoding
+ *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half?
+ *e |= (*c > 0x10FFFF) << 8; // out of range?
+ *e |= (s[1] & 0xc0) >> 2;
+ *e |= (s[2] & 0xc0) >> 4;
+ *e |= (s[3]) >> 6;
+ *e ^= 0x2a; // top two bits of each tail byte correct?
+ *e >>= shifte[len];
+
+ return next;
+}
+} // namespace internal
+
+template <> struct formatter<internal::bigint> {
+ format_parse_context::iterator parse(format_parse_context& ctx) {
+ return ctx.begin();
+ }
+
+ format_context::iterator format(const internal::bigint& n,
+ format_context& ctx) {
+ auto out = ctx.out();
+ bool first = true;
+ for (auto i = n.bigits_.size(); i > 0; --i) {
+ auto value = n.bigits_[i - 1u];
+ if (first) {
+ out = format_to(out, "{:x}", value);
+ first = false;
+ continue;
+ }
+ out = format_to(out, "{:08x}", value);
+ }
+ if (n.exp_ > 0)
+ out = format_to(out, "p{}", n.exp_ * internal::bigint::bigit_bits);
+ return out;
+ }
+};
+
+FMT_FUNC internal::utf8_to_utf16::utf8_to_utf16(string_view s) {
+ auto transcode = [this](const char* p) {
+ auto cp = uint32_t();
+ auto error = 0;
+ p = utf8_decode(p, &cp, &error);
+ if (error != 0) FMT_THROW(std::runtime_error("invalid utf8"));
+ if (cp <= 0xFFFF) {
+ buffer_.push_back(static_cast<wchar_t>(cp));
+ } else {
+ cp -= 0x10000;
+ buffer_.push_back(static_cast<wchar_t>(0xD800 + (cp >> 10)));
+ buffer_.push_back(static_cast<wchar_t>(0xDC00 + (cp & 0x3FF)));
+ }
+ return p;
+ };
+ auto p = s.data();
+ const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars.
+ if (s.size() >= block_size) {
+ for (auto end = p + s.size() - block_size + 1; p < end;) p = transcode(p);
+ }
+ if (auto num_chars_left = s.data() + s.size() - p) {
+ char buf[2 * block_size - 1] = {};
+ memcpy(buf, p, to_unsigned(num_chars_left));
+ p = buf;
+ do {
+ p = transcode(p);
+ } while (p - buf < num_chars_left);
+ }
+ buffer_.push_back(0);
+}
+
+FMT_FUNC void format_system_error(internal::buffer<char>& out, int error_code,
+ string_view message) FMT_NOEXCEPT {
+ FMT_TRY {
+ memory_buffer buf;
+ buf.resize(inline_buffer_size);
+ for (;;) {
+ char* system_message = &buf[0];
+ int result =
+ internal::safe_strerror(error_code, system_message, buf.size());
+ if (result == 0) {
+ internal::writer w(out);
+ w.write(message);
+ w.write(": ");
+ w.write(system_message);
+ return;
+ }
+ if (result != ERANGE)
+ break; // Can't get error message, report error code instead.
+ buf.resize(buf.size() * 2);
+ }
+ }
+ FMT_CATCH(...) {}
+ format_error_code(out, error_code, message);
+}
+
+FMT_FUNC void internal::error_handler::on_error(const char* message) {
+ FMT_THROW(format_error(message));
+}
+
+FMT_FUNC void report_system_error(int error_code,
+ fmt::string_view message) FMT_NOEXCEPT {
+ report_error(format_system_error, error_code, message);
+}
+
+FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) {
+ memory_buffer buffer;
+ internal::vformat_to(buffer, format_str,
+ basic_format_args<buffer_context<char>>(args));
+#ifdef _WIN32
+ auto fd = _fileno(f);
+ if (_isatty(fd)) {
+ internal::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size()));
+ auto written = DWORD();
+ if (!WriteConsoleW(reinterpret_cast<HANDLE>(_get_osfhandle(fd)),
+ u16.c_str(), static_cast<DWORD>(u16.size()), &written,
+ nullptr)) {
+ FMT_THROW(format_error("failed to write to console"));
+ }
+ return;
+ }
+#endif
+ internal::fwrite_fully(buffer.data(), 1, buffer.size(), f);
+}
+
+#ifdef _WIN32
+// Print assuming legacy (non-Unicode) encoding.
+FMT_FUNC void internal::vprint_mojibake(std::FILE* f, string_view format_str,
+ format_args args) {
+ memory_buffer buffer;
+ internal::vformat_to(buffer, format_str,
+ basic_format_args<buffer_context<char>>(args));
+ fwrite_fully(buffer.data(), 1, buffer.size(), f);
+}
+#endif
+
+FMT_FUNC void vprint(string_view format_str, format_args args) {
+ vprint(stdout, format_str, args);
+}
+
+FMT_END_NAMESPACE
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+#endif // FMT_FORMAT_INL_H_
diff --git a/GeoModelDBManager/fmt/format.h b/GeoModelDBManager/fmt/format.h
new file mode 100644
index 0000000000000000000000000000000000000000..4e96539fa2a078c093d77e9d30a83752339fda24
--- /dev/null
+++ b/GeoModelDBManager/fmt/format.h
@@ -0,0 +1,3648 @@
+/*
+ Formatting library for C++
+
+ Copyright (c) 2012 - present, Victor Zverovich
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ --- Optional exception to the license ---
+
+ As an exception, if, as a result of your compiling your source code, portions
+ of this Software are embedded into a machine-executable object form of such
+ source code, you may redistribute such embedded portions in such object form
+ without including the above copyright and permission notices.
+ */
+
+#ifndef FMT_FORMAT_H_
+#define FMT_FORMAT_H_
+
+#include <algorithm>
+#include <cerrno>
+#include <cmath>
+#include <cstdint>
+#include <limits>
+#include <memory>
+#include <stdexcept>
+
+#include "core.h"
+
+#ifdef FMT_DEPRECATED_INCLUDE_OS
+# include "os.h"
+#endif
+
+#ifdef __INTEL_COMPILER
+# define FMT_ICC_VERSION __INTEL_COMPILER
+#elif defined(__ICL)
+# define FMT_ICC_VERSION __ICL
+#else
+# define FMT_ICC_VERSION 0
+#endif
+
+#ifdef __NVCC__
+# define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__)
+#else
+# define FMT_CUDA_VERSION 0
+#endif
+
+#ifdef __has_builtin
+# define FMT_HAS_BUILTIN(x) __has_builtin(x)
+#else
+# define FMT_HAS_BUILTIN(x) 0
+#endif
+
+#if FMT_GCC_VERSION || FMT_CLANG_VERSION
+# define FMT_NOINLINE __attribute__((noinline))
+#else
+# define FMT_NOINLINE
+#endif
+
+#if __cplusplus == 201103L || __cplusplus == 201402L
+# if defined(__clang__)
+# define FMT_FALLTHROUGH [[clang::fallthrough]]
+# elif FMT_GCC_VERSION >= 700 && !defined(__PGI)
+# define FMT_FALLTHROUGH [[gnu::fallthrough]]
+# else
+# define FMT_FALLTHROUGH
+# endif
+#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) || \
+ (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
+# define FMT_FALLTHROUGH [[fallthrough]]
+#else
+# define FMT_FALLTHROUGH
+#endif
+
+#ifndef FMT_THROW
+# if FMT_EXCEPTIONS
+# if FMT_MSC_VER || FMT_NVCC
+FMT_BEGIN_NAMESPACE
+namespace internal {
+template <typename Exception> inline void do_throw(const Exception& x) {
+ // Silence unreachable code warnings in MSVC and NVCC because these
+ // are nearly impossible to fix in a generic code.
+ volatile bool b = true;
+ if (b) throw x;
+}
+} // namespace internal
+FMT_END_NAMESPACE
+# define FMT_THROW(x) internal::do_throw(x)
+# else
+# define FMT_THROW(x) throw x
+# endif
+# else
+# define FMT_THROW(x) \
+ do { \
+ static_cast<void>(sizeof(x)); \
+ FMT_ASSERT(false, ""); \
+ } while (false)
+# endif
+#endif
+
+#if FMT_EXCEPTIONS
+# define FMT_TRY try
+# define FMT_CATCH(x) catch (x)
+#else
+# define FMT_TRY if (true)
+# define FMT_CATCH(x) if (false)
+#endif
+
+#ifndef FMT_USE_USER_DEFINED_LITERALS
+// For Intel and NVIDIA compilers both they and the system gcc/msc support UDLs.
+# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \
+ FMT_MSC_VER >= 1900) && \
+ (!(FMT_ICC_VERSION || FMT_CUDA_VERSION) || FMT_ICC_VERSION >= 1500 || \
+ FMT_CUDA_VERSION >= 700)
+# define FMT_USE_USER_DEFINED_LITERALS 1
+# else
+# define FMT_USE_USER_DEFINED_LITERALS 0
+# endif
+#endif
+
+#ifndef FMT_USE_UDL_TEMPLATE
+// EDG front end based compilers (icc, nvcc) and GCC < 6.4 do not propertly
+// support UDL templates and GCC >= 9 warns about them.
+# if FMT_USE_USER_DEFINED_LITERALS && FMT_ICC_VERSION == 0 && \
+ FMT_CUDA_VERSION == 0 && \
+ ((FMT_GCC_VERSION >= 604 && FMT_GCC_VERSION <= 900 && \
+ __cplusplus >= 201402L) || \
+ FMT_CLANG_VERSION >= 304)
+# define FMT_USE_UDL_TEMPLATE 1
+# else
+# define FMT_USE_UDL_TEMPLATE 0
+# endif
+#endif
+
+#ifndef FMT_USE_FLOAT
+# define FMT_USE_FLOAT 1
+#endif
+
+#ifndef FMT_USE_DOUBLE
+# define FMT_USE_DOUBLE 1
+#endif
+
+#ifndef FMT_USE_LONG_DOUBLE
+# define FMT_USE_LONG_DOUBLE 1
+#endif
+
+// __builtin_clz is broken in clang with Microsoft CodeGen:
+// https://github.com/fmtlib/fmt/issues/519
+#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clz)) && !FMT_MSC_VER
+# define FMT_BUILTIN_CLZ(n) __builtin_clz(n)
+#endif
+#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clzll)) && !FMT_MSC_VER
+# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n)
+#endif
+
+// Some compilers masquerade as both MSVC and GCC-likes or otherwise support
+// __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the
+// MSVC intrinsics if the clz and clzll builtins are not available.
+#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(_MANAGED)
+# include <intrin.h> // _BitScanReverse, _BitScanReverse64
+
+FMT_BEGIN_NAMESPACE
+namespace internal {
+// Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning.
+# ifndef __clang__
+# pragma intrinsic(_BitScanReverse)
+# endif
+inline uint32_t clz(uint32_t x) {
+ unsigned long r = 0;
+ _BitScanReverse(&r, x);
+
+ FMT_ASSERT(x != 0, "");
+ // Static analysis complains about using uninitialized data
+ // "r", but the only way that can happen is if "x" is 0,
+ // which the callers guarantee to not happen.
+# pragma warning(suppress : 6102)
+ return 31 - r;
+}
+# define FMT_BUILTIN_CLZ(n) internal::clz(n)
+
+# if defined(_WIN64) && !defined(__clang__)
+# pragma intrinsic(_BitScanReverse64)
+# endif
+
+inline uint32_t clzll(uint64_t x) {
+ unsigned long r = 0;
+# ifdef _WIN64
+ _BitScanReverse64(&r, x);
+# else
+ // Scan the high 32 bits.
+ if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 - (r + 32);
+
+ // Scan the low 32 bits.
+ _BitScanReverse(&r, static_cast<uint32_t>(x));
+# endif
+
+ FMT_ASSERT(x != 0, "");
+ // Static analysis complains about using uninitialized data
+ // "r", but the only way that can happen is if "x" is 0,
+ // which the callers guarantee to not happen.
+# pragma warning(suppress : 6102)
+ return 63 - r;
+}
+# define FMT_BUILTIN_CLZLL(n) internal::clzll(n)
+} // namespace internal
+FMT_END_NAMESPACE
+#endif
+
+// Enable the deprecated numeric alignment.
+#ifndef FMT_NUMERIC_ALIGN
+# define FMT_NUMERIC_ALIGN 1
+#endif
+
+// Enable the deprecated percent specifier.
+#ifndef FMT_DEPRECATED_PERCENT
+# define FMT_DEPRECATED_PERCENT 0
+#endif
+
+FMT_BEGIN_NAMESPACE
+namespace internal {
+
+// An equivalent of `*reinterpret_cast<Dest*>(&source)` that doesn't have
+// undefined behavior (e.g. due to type aliasing).
+// Example: uint64_t d = bit_cast<uint64_t>(2.718);
+template <typename Dest, typename Source>
+inline Dest bit_cast(const Source& source) {
+ static_assert(sizeof(Dest) == sizeof(Source), "size mismatch");
+ Dest dest;
+ std::memcpy(&dest, &source, sizeof(dest));
+ return dest;
+}
+
+inline bool is_big_endian() {
+ const auto u = 1u;
+ struct bytes {
+ char data[sizeof(u)];
+ };
+ return bit_cast<bytes>(u).data[0] == 0;
+}
+
+// A fallback implementation of uintptr_t for systems that lack it.
+struct fallback_uintptr {
+ unsigned char value[sizeof(void*)];
+
+ fallback_uintptr() = default;
+ explicit fallback_uintptr(const void* p) {
+ *this = bit_cast<fallback_uintptr>(p);
+ if (is_big_endian()) {
+ for (size_t i = 0, j = sizeof(void*) - 1; i < j; ++i, --j)
+ std::swap(value[i], value[j]);
+ }
+ }
+};
+#ifdef UINTPTR_MAX
+using uintptr_t = ::uintptr_t;
+inline uintptr_t to_uintptr(const void* p) { return bit_cast<uintptr_t>(p); }
+#else
+using uintptr_t = fallback_uintptr;
+inline fallback_uintptr to_uintptr(const void* p) {
+ return fallback_uintptr(p);
+}
+#endif
+
+// Returns the largest possible value for type T. Same as
+// std::numeric_limits<T>::max() but shorter and not affected by the max macro.
+template <typename T> constexpr T max_value() {
+ return (std::numeric_limits<T>::max)();
+}
+template <typename T> constexpr int num_bits() {
+ return std::numeric_limits<T>::digits;
+}
+template <> constexpr int num_bits<fallback_uintptr>() {
+ return static_cast<int>(sizeof(void*) *
+ std::numeric_limits<unsigned char>::digits);
+}
+
+// An approximation of iterator_t for pre-C++20 systems.
+template <typename T>
+using iterator_t = decltype(std::begin(std::declval<T&>()));
+
+// Detect the iterator category of *any* given type in a SFINAE-friendly way.
+// Unfortunately, older implementations of std::iterator_traits are not safe
+// for use in a SFINAE-context.
+template <typename It, typename Enable = void>
+struct iterator_category : std::false_type {};
+
+template <typename T> struct iterator_category<T*> {
+ using type = std::random_access_iterator_tag;
+};
+
+template <typename It>
+struct iterator_category<It, void_t<typename It::iterator_category>> {
+ using type = typename It::iterator_category;
+};
+
+// Detect if *any* given type models the OutputIterator concept.
+template <typename It> class is_output_iterator {
+ // Check for mutability because all iterator categories derived from
+ // std::input_iterator_tag *may* also meet the requirements of an
+ // OutputIterator, thereby falling into the category of 'mutable iterators'
+ // [iterator.requirements.general] clause 4. The compiler reveals this
+ // property only at the point of *actually dereferencing* the iterator!
+ template <typename U>
+ static decltype(*(std::declval<U>())) test(std::input_iterator_tag);
+ template <typename U> static char& test(std::output_iterator_tag);
+ template <typename U> static const char& test(...);
+
+ using type = decltype(test<It>(typename iterator_category<It>::type{}));
+
+ public:
+ enum { value = !std::is_const<remove_reference_t<type>>::value };
+};
+
+// A workaround for std::string not having mutable data() until C++17.
+template <typename Char> inline Char* get_data(std::basic_string<Char>& s) {
+ return &s[0];
+}
+template <typename Container>
+inline typename Container::value_type* get_data(Container& c) {
+ return c.data();
+}
+
+#if defined(_SECURE_SCL) && _SECURE_SCL
+// Make a checked iterator to avoid MSVC warnings.
+template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>;
+template <typename T> checked_ptr<T> make_checked(T* p, std::size_t size) {
+ return {p, size};
+}
+#else
+template <typename T> using checked_ptr = T*;
+template <typename T> inline T* make_checked(T* p, std::size_t) { return p; }
+#endif
+
+template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
+inline checked_ptr<typename Container::value_type> reserve(
+ std::back_insert_iterator<Container>& it, std::size_t n) {
+ Container& c = get_container(it);
+ std::size_t size = c.size();
+ c.resize(size + n);
+ return make_checked(get_data(c) + size, n);
+}
+
+template <typename Iterator>
+inline Iterator& reserve(Iterator& it, std::size_t) {
+ return it;
+}
+
+// An output iterator that counts the number of objects written to it and
+// discards them.
+class counting_iterator {
+ private:
+ std::size_t count_;
+
+ public:
+ using iterator_category = std::output_iterator_tag;
+ using difference_type = std::ptrdiff_t;
+ using pointer = void;
+ using reference = void;
+ using _Unchecked_type = counting_iterator; // Mark iterator as checked.
+
+ struct value_type {
+ template <typename T> void operator=(const T&) {}
+ };
+
+ counting_iterator() : count_(0) {}
+
+ std::size_t count() const { return count_; }
+
+ counting_iterator& operator++() {
+ ++count_;
+ return *this;
+ }
+
+ counting_iterator operator++(int) {
+ auto it = *this;
+ ++*this;
+ return it;
+ }
+
+ value_type operator*() const { return {}; }
+};
+
+template <typename OutputIt> class truncating_iterator_base {
+ protected:
+ OutputIt out_;
+ std::size_t limit_;
+ std::size_t count_;
+
+ truncating_iterator_base(OutputIt out, std::size_t limit)
+ : out_(out), limit_(limit), count_(0) {}
+
+ public:
+ using iterator_category = std::output_iterator_tag;
+ using value_type = typename std::iterator_traits<OutputIt>::value_type;
+ using difference_type = void;
+ using pointer = void;
+ using reference = void;
+ using _Unchecked_type =
+ truncating_iterator_base; // Mark iterator as checked.
+
+ OutputIt base() const { return out_; }
+ std::size_t count() const { return count_; }
+};
+
+// An output iterator that truncates the output and counts the number of objects
+// written to it.
+template <typename OutputIt,
+ typename Enable = typename std::is_void<
+ typename std::iterator_traits<OutputIt>::value_type>::type>
+class truncating_iterator;
+
+template <typename OutputIt>
+class truncating_iterator<OutputIt, std::false_type>
+ : public truncating_iterator_base<OutputIt> {
+ mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_;
+
+ public:
+ using value_type = typename truncating_iterator_base<OutputIt>::value_type;
+
+ truncating_iterator(OutputIt out, std::size_t limit)
+ : truncating_iterator_base<OutputIt>(out, limit) {}
+
+ truncating_iterator& operator++() {
+ if (this->count_++ < this->limit_) ++this->out_;
+ return *this;
+ }
+
+ truncating_iterator operator++(int) {
+ auto it = *this;
+ ++*this;
+ return it;
+ }
+
+ value_type& operator*() const {
+ return this->count_ < this->limit_ ? *this->out_ : blackhole_;
+ }
+};
+
+template <typename OutputIt>
+class truncating_iterator<OutputIt, std::true_type>
+ : public truncating_iterator_base<OutputIt> {
+ public:
+ truncating_iterator(OutputIt out, std::size_t limit)
+ : truncating_iterator_base<OutputIt>(out, limit) {}
+
+ template <typename T> truncating_iterator& operator=(T val) {
+ if (this->count_++ < this->limit_) *this->out_++ = val;
+ return *this;
+ }
+
+ truncating_iterator& operator++() { return *this; }
+ truncating_iterator& operator++(int) { return *this; }
+ truncating_iterator& operator*() { return *this; }
+};
+
+// A range with the specified output iterator and value type.
+template <typename OutputIt, typename T = typename OutputIt::value_type>
+class output_range {
+ private:
+ OutputIt it_;
+
+ public:
+ using value_type = T;
+ using iterator = OutputIt;
+ struct sentinel {};
+
+ explicit output_range(OutputIt it) : it_(it) {}
+ OutputIt begin() const { return it_; }
+ sentinel end() const { return {}; } // Sentinel is not used yet.
+};
+
+template <typename Char>
+inline size_t count_code_points(basic_string_view<Char> s) {
+ return s.size();
+}
+
+// Counts the number of code points in a UTF-8 string.
+inline size_t count_code_points(basic_string_view<char> s) {
+ const char* data = s.data();
+ size_t num_code_points = 0;
+ for (size_t i = 0, size = s.size(); i != size; ++i) {
+ if ((data[i] & 0xc0) != 0x80) ++num_code_points;
+ }
+ return num_code_points;
+}
+
+inline size_t count_code_points(basic_string_view<char8_type> s) {
+ return count_code_points(basic_string_view<char>(
+ reinterpret_cast<const char*>(s.data()), s.size()));
+}
+
+template <typename Char>
+inline size_t code_point_index(basic_string_view<Char> s, size_t n) {
+ size_t size = s.size();
+ return n < size ? n : size;
+}
+
+// Calculates the index of the nth code point in a UTF-8 string.
+inline size_t code_point_index(basic_string_view<char8_type> s, size_t n) {
+ const char8_type* data = s.data();
+ size_t num_code_points = 0;
+ for (size_t i = 0, size = s.size(); i != size; ++i) {
+ if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) {
+ return i;
+ }
+ }
+ return s.size();
+}
+
+inline char8_type to_char8_t(char c) { return static_cast<char8_type>(c); }
+
+template <typename InputIt, typename OutChar>
+using needs_conversion = bool_constant<
+ std::is_same<typename std::iterator_traits<InputIt>::value_type,
+ char>::value &&
+ std::is_same<OutChar, char8_type>::value>;
+
+template <typename OutChar, typename InputIt, typename OutputIt,
+ FMT_ENABLE_IF(!needs_conversion<InputIt, OutChar>::value)>
+OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) {
+ return std::copy(begin, end, it);
+}
+
+template <typename OutChar, typename InputIt, typename OutputIt,
+ FMT_ENABLE_IF(needs_conversion<InputIt, OutChar>::value)>
+OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) {
+ return std::transform(begin, end, it, to_char8_t);
+}
+
+#ifndef FMT_USE_GRISU
+# define FMT_USE_GRISU 1
+#endif
+
+template <typename T> constexpr bool use_grisu() {
+ return FMT_USE_GRISU && std::numeric_limits<double>::is_iec559 &&
+ sizeof(T) <= sizeof(double);
+}
+
+template <typename T>
+template <typename U>
+void buffer<T>::append(const U* begin, const U* end) {
+ std::size_t new_size = size_ + to_unsigned(end - begin);
+ reserve(new_size);
+ std::uninitialized_copy(begin, end, make_checked(ptr_, capacity_) + size_);
+ size_ = new_size;
+}
+} // namespace internal
+
+// A range with an iterator appending to a buffer.
+template <typename T>
+class buffer_range : public internal::output_range<
+ std::back_insert_iterator<internal::buffer<T>>, T> {
+ public:
+ using iterator = std::back_insert_iterator<internal::buffer<T>>;
+ using internal::output_range<iterator, T>::output_range;
+ buffer_range(internal::buffer<T>& buf)
+ : internal::output_range<iterator, T>(std::back_inserter(buf)) {}
+};
+
+class FMT_DEPRECATED u8string_view
+ : public basic_string_view<internal::char8_type> {
+ public:
+ u8string_view(const char* s)
+ : basic_string_view<internal::char8_type>(
+ reinterpret_cast<const internal::char8_type*>(s)) {}
+ u8string_view(const char* s, size_t count) FMT_NOEXCEPT
+ : basic_string_view<internal::char8_type>(
+ reinterpret_cast<const internal::char8_type*>(s), count) {}
+};
+
+#if FMT_USE_USER_DEFINED_LITERALS
+inline namespace literals {
+FMT_DEPRECATED inline basic_string_view<internal::char8_type> operator"" _u(
+ const char* s, std::size_t n) {
+ return {reinterpret_cast<const internal::char8_type*>(s), n};
+}
+} // namespace literals
+#endif
+
+// The number of characters to store in the basic_memory_buffer object itself
+// to avoid dynamic memory allocation.
+enum { inline_buffer_size = 500 };
+
+/**
+ \rst
+ A dynamically growing memory buffer for trivially copyable/constructible types
+ with the first ``SIZE`` elements stored in the object itself.
+
+ You can use one of the following type aliases for common character types:
+
+ +----------------+------------------------------+
+ | Type | Definition |
+ +================+==============================+
+ | memory_buffer | basic_memory_buffer<char> |
+ +----------------+------------------------------+
+ | wmemory_buffer | basic_memory_buffer<wchar_t> |
+ +----------------+------------------------------+
+
+ **Example**::
+
+ fmt::memory_buffer out;
+ format_to(out, "The answer is {}.", 42);
+
+ This will append the following output to the ``out`` object:
+
+ .. code-block:: none
+
+ The answer is 42.
+
+ The output can be converted to an ``std::string`` with ``to_string(out)``.
+ \endrst
+ */
+template <typename T, std::size_t SIZE = inline_buffer_size,
+ typename Allocator = std::allocator<T>>
+class basic_memory_buffer : private Allocator, public internal::buffer<T> {
+ private:
+ T store_[SIZE];
+
+ // Deallocate memory allocated by the buffer.
+ void deallocate() {
+ T* data = this->data();
+ if (data != store_) Allocator::deallocate(data, this->capacity());
+ }
+
+ protected:
+ void grow(std::size_t size) FMT_OVERRIDE;
+
+ public:
+ using value_type = T;
+ using const_reference = const T&;
+
+ explicit basic_memory_buffer(const Allocator& alloc = Allocator())
+ : Allocator(alloc) {
+ this->set(store_, SIZE);
+ }
+ ~basic_memory_buffer() FMT_OVERRIDE { deallocate(); }
+
+ private:
+ // Move data from other to this buffer.
+ void move(basic_memory_buffer& other) {
+ Allocator &this_alloc = *this, &other_alloc = other;
+ this_alloc = std::move(other_alloc);
+ T* data = other.data();
+ std::size_t size = other.size(), capacity = other.capacity();
+ if (data == other.store_) {
+ this->set(store_, capacity);
+ std::uninitialized_copy(other.store_, other.store_ + size,
+ internal::make_checked(store_, capacity));
+ } else {
+ this->set(data, capacity);
+ // Set pointer to the inline array so that delete is not called
+ // when deallocating.
+ other.set(other.store_, 0);
+ }
+ this->resize(size);
+ }
+
+ public:
+ /**
+ \rst
+ Constructs a :class:`fmt::basic_memory_buffer` object moving the content
+ of the other object to it.
+ \endrst
+ */
+ basic_memory_buffer(basic_memory_buffer&& other) FMT_NOEXCEPT { move(other); }
+
+ /**
+ \rst
+ Moves the content of the other ``basic_memory_buffer`` object to this one.
+ \endrst
+ */
+ basic_memory_buffer& operator=(basic_memory_buffer&& other) FMT_NOEXCEPT {
+ FMT_ASSERT(this != &other, "");
+ deallocate();
+ move(other);
+ return *this;
+ }
+
+ // Returns a copy of the allocator associated with this buffer.
+ Allocator get_allocator() const { return *this; }
+};
+
+template <typename T, std::size_t SIZE, typename Allocator>
+void basic_memory_buffer<T, SIZE, Allocator>::grow(std::size_t size) {
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+ if (size > 1000) throw std::runtime_error("fuzz mode - won't grow that much");
+#endif
+ std::size_t old_capacity = this->capacity();
+ std::size_t new_capacity = old_capacity + old_capacity / 2;
+ if (size > new_capacity) new_capacity = size;
+ T* old_data = this->data();
+ T* new_data = std::allocator_traits<Allocator>::allocate(*this, new_capacity);
+ // The following code doesn't throw, so the raw pointer above doesn't leak.
+ std::uninitialized_copy(old_data, old_data + this->size(),
+ internal::make_checked(new_data, new_capacity));
+ this->set(new_data, new_capacity);
+ // deallocate must not throw according to the standard, but even if it does,
+ // the buffer already uses the new storage and will deallocate it in
+ // destructor.
+ if (old_data != store_) Allocator::deallocate(old_data, old_capacity);
+}
+
+using memory_buffer = basic_memory_buffer<char>;
+using wmemory_buffer = basic_memory_buffer<wchar_t>;
+
+/** A formatting error such as invalid format string. */
+FMT_CLASS_API
+class FMT_API format_error : public std::runtime_error {
+ public:
+ explicit format_error(const char* message) : std::runtime_error(message) {}
+ explicit format_error(const std::string& message)
+ : std::runtime_error(message) {}
+ format_error(const format_error&) = default;
+ format_error& operator=(const format_error&) = default;
+ format_error(format_error&&) = default;
+ format_error& operator=(format_error&&) = default;
+ ~format_error() FMT_NOEXCEPT FMT_OVERRIDE;
+};
+
+namespace internal {
+
+// Returns true if value is negative, false otherwise.
+// Same as `value < 0` but doesn't produce warnings if T is an unsigned type.
+template <typename T, FMT_ENABLE_IF(std::numeric_limits<T>::is_signed)>
+FMT_CONSTEXPR bool is_negative(T value) {
+ return value < 0;
+}
+template <typename T, FMT_ENABLE_IF(!std::numeric_limits<T>::is_signed)>
+FMT_CONSTEXPR bool is_negative(T) {
+ return false;
+}
+
+template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
+FMT_CONSTEXPR bool is_supported_floating_point(T) {
+ return (std::is_same<T, float>::value && FMT_USE_FLOAT) ||
+ (std::is_same<T, double>::value && FMT_USE_DOUBLE) ||
+ (std::is_same<T, long double>::value && FMT_USE_LONG_DOUBLE);
+}
+
+// Smallest of uint32_t, uint64_t, uint128_t that is large enough to
+// represent all values of T.
+template <typename T>
+using uint32_or_64_or_128_t = conditional_t<
+ std::numeric_limits<T>::digits <= 32, uint32_t,
+ conditional_t<std::numeric_limits<T>::digits <= 64, uint64_t, uint128_t>>;
+
+// Static data is placed in this class template for the header-only config.
+template <typename T = void> struct FMT_EXTERN_TEMPLATE_API basic_data {
+ static const uint64_t powers_of_10_64[];
+ static const uint32_t zero_or_powers_of_10_32[];
+ static const uint64_t zero_or_powers_of_10_64[];
+ static const uint64_t pow10_significands[];
+ static const int16_t pow10_exponents[];
+ static const char digits[];
+ static const char hex_digits[];
+ static const char foreground_color[];
+ static const char background_color[];
+ static const char reset_color[5];
+ static const wchar_t wreset_color[5];
+ static const char signs[];
+};
+
+FMT_EXTERN template struct basic_data<void>;
+
+// This is a struct rather than an alias to avoid shadowing warnings in gcc.
+struct data : basic_data<> {};
+
+#ifdef FMT_BUILTIN_CLZLL
+// Returns the number of decimal digits in n. Leading zeros are not counted
+// except for n == 0 in which case count_digits returns 1.
+inline int count_digits(uint64_t n) {
+ // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10
+ // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits.
+ int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12;
+ return t - (n < data::zero_or_powers_of_10_64[t]) + 1;
+}
+#else
+// Fallback version of count_digits used when __builtin_clz is not available.
+inline int count_digits(uint64_t n) {
+ int count = 1;
+ for (;;) {
+ // Integer division is slow so do it for a group of four digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ if (n < 10) return count;
+ if (n < 100) return count + 1;
+ if (n < 1000) return count + 2;
+ if (n < 10000) return count + 3;
+ n /= 10000u;
+ count += 4;
+ }
+}
+#endif
+
+#if FMT_USE_INT128
+inline int count_digits(uint128_t n) {
+ int count = 1;
+ for (;;) {
+ // Integer division is slow so do it for a group of four digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ if (n < 10) return count;
+ if (n < 100) return count + 1;
+ if (n < 1000) return count + 2;
+ if (n < 10000) return count + 3;
+ n /= 10000U;
+ count += 4;
+ }
+}
+#endif
+
+// Counts the number of digits in n. BITS = log2(radix).
+template <unsigned BITS, typename UInt> inline int count_digits(UInt n) {
+ int num_digits = 0;
+ do {
+ ++num_digits;
+ } while ((n >>= BITS) != 0);
+ return num_digits;
+}
+
+template <> int count_digits<4>(internal::fallback_uintptr n);
+
+#if FMT_GCC_VERSION || FMT_CLANG_VERSION
+# define FMT_ALWAYS_INLINE inline __attribute__((always_inline))
+#else
+# define FMT_ALWAYS_INLINE
+#endif
+
+#ifdef FMT_BUILTIN_CLZ
+// Optional version of count_digits for better performance on 32-bit platforms.
+inline int count_digits(uint32_t n) {
+ int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12;
+ return t - (n < data::zero_or_powers_of_10_32[t]) + 1;
+}
+#endif
+
+template <typename Char> FMT_API std::string grouping_impl(locale_ref loc);
+template <typename Char> inline std::string grouping(locale_ref loc) {
+ return grouping_impl<char>(loc);
+}
+template <> inline std::string grouping<wchar_t>(locale_ref loc) {
+ return grouping_impl<wchar_t>(loc);
+}
+
+template <typename Char> FMT_API Char thousands_sep_impl(locale_ref loc);
+template <typename Char> inline Char thousands_sep(locale_ref loc) {
+ return Char(thousands_sep_impl<char>(loc));
+}
+template <> inline wchar_t thousands_sep(locale_ref loc) {
+ return thousands_sep_impl<wchar_t>(loc);
+}
+
+template <typename Char> FMT_API Char decimal_point_impl(locale_ref loc);
+template <typename Char> inline Char decimal_point(locale_ref loc) {
+ return Char(decimal_point_impl<char>(loc));
+}
+template <> inline wchar_t decimal_point(locale_ref loc) {
+ return decimal_point_impl<wchar_t>(loc);
+}
+
+// Formats a decimal unsigned integer value writing into buffer.
+// add_thousands_sep is called after writing each char to add a thousands
+// separator if necessary.
+template <typename UInt, typename Char, typename F>
+inline Char* format_decimal(Char* buffer, UInt value, int num_digits,
+ F add_thousands_sep) {
+ FMT_ASSERT(num_digits >= 0, "invalid digit count");
+ buffer += num_digits;
+ Char* end = buffer;
+ while (value >= 100) {
+ // Integer division is slow so do it for a group of two digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ auto index = static_cast<unsigned>((value % 100) * 2);
+ value /= 100;
+ *--buffer = static_cast<Char>(data::digits[index + 1]);
+ add_thousands_sep(buffer);
+ *--buffer = static_cast<Char>(data::digits[index]);
+ add_thousands_sep(buffer);
+ }
+ if (value < 10) {
+ *--buffer = static_cast<Char>('0' + value);
+ return end;
+ }
+ auto index = static_cast<unsigned>(value * 2);
+ *--buffer = static_cast<Char>(data::digits[index + 1]);
+ add_thousands_sep(buffer);
+ *--buffer = static_cast<Char>(data::digits[index]);
+ return end;
+}
+
+template <typename Int> constexpr int digits10() FMT_NOEXCEPT {
+ return std::numeric_limits<Int>::digits10;
+}
+template <> constexpr int digits10<int128_t>() FMT_NOEXCEPT { return 38; }
+template <> constexpr int digits10<uint128_t>() FMT_NOEXCEPT { return 38; }
+
+template <typename Char, typename UInt, typename Iterator, typename F>
+inline Iterator format_decimal(Iterator out, UInt value, int num_digits,
+ F add_thousands_sep) {
+ FMT_ASSERT(num_digits >= 0, "invalid digit count");
+ // Buffer should be large enough to hold all digits (<= digits10 + 1).
+ enum { max_size = digits10<UInt>() + 1 };
+ Char buffer[2 * max_size];
+ auto end = format_decimal(buffer, value, num_digits, add_thousands_sep);
+ return internal::copy_str<Char>(buffer, end, out);
+}
+
+template <typename Char, typename It, typename UInt>
+inline It format_decimal(It out, UInt value, int num_digits) {
+ return format_decimal<Char>(out, value, num_digits, [](Char*) {});
+}
+
+template <unsigned BASE_BITS, typename Char, typename UInt>
+inline Char* format_uint(Char* buffer, UInt value, int num_digits,
+ bool upper = false) {
+ buffer += num_digits;
+ Char* end = buffer;
+ do {
+ const char* digits = upper ? "0123456789ABCDEF" : data::hex_digits;
+ unsigned digit = (value & ((1 << BASE_BITS) - 1));
+ *--buffer = static_cast<Char>(BASE_BITS < 4 ? static_cast<char>('0' + digit)
+ : digits[digit]);
+ } while ((value >>= BASE_BITS) != 0);
+ return end;
+}
+
+template <unsigned BASE_BITS, typename Char>
+Char* format_uint(Char* buffer, internal::fallback_uintptr n, int num_digits,
+ bool = false) {
+ auto char_digits = std::numeric_limits<unsigned char>::digits / 4;
+ int start = (num_digits + char_digits - 1) / char_digits - 1;
+ if (int start_digits = num_digits % char_digits) {
+ unsigned value = n.value[start--];
+ buffer = format_uint<BASE_BITS>(buffer, value, start_digits);
+ }
+ for (; start >= 0; --start) {
+ unsigned value = n.value[start];
+ buffer += char_digits;
+ auto p = buffer;
+ for (int i = 0; i < char_digits; ++i) {
+ unsigned digit = (value & ((1 << BASE_BITS) - 1));
+ *--p = static_cast<Char>(data::hex_digits[digit]);
+ value >>= BASE_BITS;
+ }
+ }
+ return buffer;
+}
+
+template <unsigned BASE_BITS, typename Char, typename It, typename UInt>
+inline It format_uint(It out, UInt value, int num_digits, bool upper = false) {
+ // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1).
+ char buffer[num_bits<UInt>() / BASE_BITS + 1];
+ format_uint<BASE_BITS>(buffer, value, num_digits, upper);
+ return internal::copy_str<Char>(buffer, buffer + num_digits, out);
+}
+
+// A converter from UTF-8 to UTF-16.
+class utf8_to_utf16 {
+ private:
+ wmemory_buffer buffer_;
+
+ public:
+ FMT_API explicit utf8_to_utf16(string_view s);
+ operator wstring_view() const { return {&buffer_[0], size()}; }
+ size_t size() const { return buffer_.size() - 1; }
+ const wchar_t* c_str() const { return &buffer_[0]; }
+ std::wstring str() const { return {&buffer_[0], size()}; }
+};
+
+template <typename T = void> struct null {};
+
+// Workaround an array initialization issue in gcc 4.8.
+template <typename Char> struct fill_t {
+ private:
+ enum { max_size = 4 };
+ Char data_[max_size];
+ unsigned char size_;
+
+ public:
+ FMT_CONSTEXPR void operator=(basic_string_view<Char> s) {
+ auto size = s.size();
+ if (size > max_size) {
+ FMT_THROW(format_error("invalid fill"));
+ return;
+ }
+ for (size_t i = 0; i < size; ++i) data_[i] = s[i];
+ size_ = static_cast<unsigned char>(size);
+ }
+
+ size_t size() const { return size_; }
+ const Char* data() const { return data_; }
+
+ FMT_CONSTEXPR Char& operator[](size_t index) { return data_[index]; }
+ FMT_CONSTEXPR const Char& operator[](size_t index) const {
+ return data_[index];
+ }
+
+ static FMT_CONSTEXPR fill_t<Char> make() {
+ auto fill = fill_t<Char>();
+ fill[0] = Char(' ');
+ fill.size_ = 1;
+ return fill;
+ }
+};
+} // namespace internal
+
+// We cannot use enum classes as bit fields because of a gcc bug
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414.
+namespace align {
+enum type { none, left, right, center, numeric };
+}
+using align_t = align::type;
+
+namespace sign {
+enum type { none, minus, plus, space };
+}
+using sign_t = sign::type;
+
+// Format specifiers for built-in and string types.
+template <typename Char> struct basic_format_specs {
+ int width;
+ int precision;
+ char type;
+ align_t align : 4;
+ sign_t sign : 3;
+ bool alt : 1; // Alternate form ('#').
+ internal::fill_t<Char> fill;
+
+ constexpr basic_format_specs()
+ : width(0),
+ precision(-1),
+ type(0),
+ align(align::none),
+ sign(sign::none),
+ alt(false),
+ fill(internal::fill_t<Char>::make()) {}
+};
+
+using format_specs = basic_format_specs<char>;
+
+namespace internal {
+
+// A floating-point presentation format.
+enum class float_format : unsigned char {
+ general, // General: exponent notation or fixed point based on magnitude.
+ exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3.
+ fixed, // Fixed point with the default precision of 6, e.g. 0.0012.
+ hex
+};
+
+struct float_specs {
+ int precision;
+ float_format format : 8;
+ sign_t sign : 8;
+ bool upper : 1;
+ bool locale : 1;
+ bool percent : 1;
+ bool binary32 : 1;
+ bool use_grisu : 1;
+ bool showpoint : 1;
+};
+
+// Writes the exponent exp in the form "[+-]d{2,3}" to buffer.
+template <typename Char, typename It> It write_exponent(int exp, It it) {
+ FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range");
+ if (exp < 0) {
+ *it++ = static_cast<Char>('-');
+ exp = -exp;
+ } else {
+ *it++ = static_cast<Char>('+');
+ }
+ if (exp >= 100) {
+ const char* top = data::digits + (exp / 100) * 2;
+ if (exp >= 1000) *it++ = static_cast<Char>(top[0]);
+ *it++ = static_cast<Char>(top[1]);
+ exp %= 100;
+ }
+ const char* d = data::digits + exp * 2;
+ *it++ = static_cast<Char>(d[0]);
+ *it++ = static_cast<Char>(d[1]);
+ return it;
+}
+
+template <typename Char> class float_writer {
+ private:
+ // The number is given as v = digits_ * pow(10, exp_).
+ const char* digits_;
+ int num_digits_;
+ int exp_;
+ size_t size_;
+ float_specs specs_;
+ Char decimal_point_;
+
+ template <typename It> It prettify(It it) const {
+ // pow(10, full_exp - 1) <= v <= pow(10, full_exp).
+ int full_exp = num_digits_ + exp_;
+ if (specs_.format == float_format::exp) {
+ // Insert a decimal point after the first digit and add an exponent.
+ *it++ = static_cast<Char>(*digits_);
+ int num_zeros = specs_.precision - num_digits_;
+ if (num_digits_ > 1 || specs_.showpoint) *it++ = decimal_point_;
+ it = copy_str<Char>(digits_ + 1, digits_ + num_digits_, it);
+ if (num_zeros > 0 && specs_.showpoint)
+ it = std::fill_n(it, num_zeros, static_cast<Char>('0'));
+ *it++ = static_cast<Char>(specs_.upper ? 'E' : 'e');
+ return write_exponent<Char>(full_exp - 1, it);
+ }
+ if (num_digits_ <= full_exp) {
+ // 1234e7 -> 12340000000[.0+]
+ it = copy_str<Char>(digits_, digits_ + num_digits_, it);
+ it = std::fill_n(it, full_exp - num_digits_, static_cast<Char>('0'));
+ if (specs_.showpoint || specs_.precision < 0) {
+ *it++ = decimal_point_;
+ int num_zeros = specs_.precision - full_exp;
+ if (num_zeros <= 0) {
+ if (specs_.format != float_format::fixed)
+ *it++ = static_cast<Char>('0');
+ return it;
+ }
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+ if (num_zeros > 1000)
+ throw std::runtime_error("fuzz mode - avoiding excessive cpu use");
+#endif
+ it = std::fill_n(it, num_zeros, static_cast<Char>('0'));
+ }
+ } else if (full_exp > 0) {
+ // 1234e-2 -> 12.34[0+]
+ it = copy_str<Char>(digits_, digits_ + full_exp, it);
+ if (!specs_.showpoint) {
+ // Remove trailing zeros.
+ int num_digits = num_digits_;
+ while (num_digits > full_exp && digits_[num_digits - 1] == '0')
+ --num_digits;
+ if (num_digits != full_exp) *it++ = decimal_point_;
+ return copy_str<Char>(digits_ + full_exp, digits_ + num_digits, it);
+ }
+ *it++ = decimal_point_;
+ it = copy_str<Char>(digits_ + full_exp, digits_ + num_digits_, it);
+ if (specs_.precision > num_digits_) {
+ // Add trailing zeros.
+ int num_zeros = specs_.precision - num_digits_;
+ it = std::fill_n(it, num_zeros, static_cast<Char>('0'));
+ }
+ } else {
+ // 1234e-6 -> 0.001234
+ *it++ = static_cast<Char>('0');
+ int num_zeros = -full_exp;
+ int num_digits = num_digits_;
+ if (num_digits == 0 && specs_.precision >= 0 &&
+ specs_.precision < num_zeros) {
+ num_zeros = specs_.precision;
+ }
+ // Remove trailing zeros.
+ if (!specs_.showpoint)
+ while (num_digits > 0 && digits_[num_digits - 1] == '0') --num_digits;
+ if (num_zeros != 0 || num_digits != 0 || specs_.showpoint) {
+ *it++ = decimal_point_;
+ it = std::fill_n(it, num_zeros, static_cast<Char>('0'));
+ it = copy_str<Char>(digits_, digits_ + num_digits, it);
+ }
+ }
+ return it;
+ }
+
+ public:
+ float_writer(const char* digits, int num_digits, int exp, float_specs specs,
+ Char decimal_point)
+ : digits_(digits),
+ num_digits_(num_digits),
+ exp_(exp),
+ specs_(specs),
+ decimal_point_(decimal_point) {
+ int full_exp = num_digits + exp - 1;
+ int precision = specs.precision > 0 ? specs.precision : 16;
+ if (specs_.format == float_format::general &&
+ !(full_exp >= -4 && full_exp < precision)) {
+ specs_.format = float_format::exp;
+ }
+ size_ = prettify(counting_iterator()).count();
+ size_ += specs.sign ? 1 : 0;
+ }
+
+ size_t size() const { return size_; }
+ size_t width() const { return size(); }
+
+ template <typename It> void operator()(It&& it) {
+ if (specs_.sign) *it++ = static_cast<Char>(data::signs[specs_.sign]);
+ it = prettify(it);
+ }
+};
+
+template <typename T>
+int format_float(T value, int precision, float_specs specs, buffer<char>& buf);
+
+// Formats a floating-point number with snprintf.
+template <typename T>
+int snprintf_float(T value, int precision, float_specs specs,
+ buffer<char>& buf);
+
+template <typename T> T promote_float(T value) { return value; }
+inline double promote_float(float value) { return static_cast<double>(value); }
+
+template <typename Handler>
+FMT_CONSTEXPR void handle_int_type_spec(char spec, Handler&& handler) {
+ switch (spec) {
+ case 0:
+ case 'd':
+ handler.on_dec();
+ break;
+ case 'x':
+ case 'X':
+ handler.on_hex();
+ break;
+ case 'b':
+ case 'B':
+ handler.on_bin();
+ break;
+ case 'o':
+ handler.on_oct();
+ break;
+ case 'n':
+ case 'L':
+ handler.on_num();
+ break;
+ default:
+ handler.on_error();
+ }
+}
+
+template <typename ErrorHandler = error_handler, typename Char>
+FMT_CONSTEXPR float_specs parse_float_type_spec(
+ const basic_format_specs<Char>& specs, ErrorHandler&& eh = {}) {
+ auto result = float_specs();
+ result.showpoint = specs.alt;
+ switch (specs.type) {
+ case 0:
+ result.format = float_format::general;
+ result.showpoint |= specs.precision > 0;
+ break;
+ case 'G':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'g':
+ result.format = float_format::general;
+ break;
+ case 'E':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'e':
+ result.format = float_format::exp;
+ result.showpoint |= specs.precision != 0;
+ break;
+ case 'F':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'f':
+ result.format = float_format::fixed;
+ result.showpoint |= specs.precision != 0;
+ break;
+#if FMT_DEPRECATED_PERCENT
+ case '%':
+ result.format = float_format::fixed;
+ result.percent = true;
+ break;
+#endif
+ case 'A':
+ result.upper = true;
+ FMT_FALLTHROUGH;
+ case 'a':
+ result.format = float_format::hex;
+ break;
+ case 'n':
+ result.locale = true;
+ break;
+ default:
+ eh.on_error("invalid type specifier");
+ break;
+ }
+ return result;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR void handle_char_specs(const basic_format_specs<Char>* specs,
+ Handler&& handler) {
+ if (!specs) return handler.on_char();
+ if (specs->type && specs->type != 'c') return handler.on_int();
+ if (specs->align == align::numeric || specs->sign != sign::none || specs->alt)
+ handler.on_error("invalid format specifier for char");
+ handler.on_char();
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler&& handler) {
+ if (spec == 0 || spec == 's')
+ handler.on_string();
+ else if (spec == 'p')
+ handler.on_pointer();
+ else
+ handler.on_error("invalid type specifier");
+}
+
+template <typename Char, typename ErrorHandler>
+FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh) {
+ if (spec != 0 && spec != 's') eh.on_error("invalid type specifier");
+}
+
+template <typename Char, typename ErrorHandler>
+FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) {
+ if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier");
+}
+
+template <typename ErrorHandler> class int_type_checker : private ErrorHandler {
+ public:
+ FMT_CONSTEXPR explicit int_type_checker(ErrorHandler eh) : ErrorHandler(eh) {}
+
+ FMT_CONSTEXPR void on_dec() {}
+ FMT_CONSTEXPR void on_hex() {}
+ FMT_CONSTEXPR void on_bin() {}
+ FMT_CONSTEXPR void on_oct() {}
+ FMT_CONSTEXPR void on_num() {}
+
+ FMT_CONSTEXPR void on_error() {
+ ErrorHandler::on_error("invalid type specifier");
+ }
+};
+
+template <typename ErrorHandler>
+class char_specs_checker : public ErrorHandler {
+ private:
+ char type_;
+
+ public:
+ FMT_CONSTEXPR char_specs_checker(char type, ErrorHandler eh)
+ : ErrorHandler(eh), type_(type) {}
+
+ FMT_CONSTEXPR void on_int() {
+ handle_int_type_spec(type_, int_type_checker<ErrorHandler>(*this));
+ }
+ FMT_CONSTEXPR void on_char() {}
+};
+
+template <typename ErrorHandler>
+class cstring_type_checker : public ErrorHandler {
+ public:
+ FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh)
+ : ErrorHandler(eh) {}
+
+ FMT_CONSTEXPR void on_string() {}
+ FMT_CONSTEXPR void on_pointer() {}
+};
+
+template <typename Context>
+void arg_map<Context>::init(const basic_format_args<Context>& args) {
+ if (map_) return;
+ map_ = new entry[internal::to_unsigned(args.max_size())];
+ if (args.is_packed()) {
+ for (int i = 0;; ++i) {
+ internal::type arg_type = args.type(i);
+ if (arg_type == internal::type::none_type) return;
+ if (arg_type == internal::type::named_arg_type)
+ push_back(args.values_[i]);
+ }
+ }
+ for (int i = 0, n = args.max_size(); i < n; ++i) {
+ auto type = args.args_[i].type_;
+ if (type == internal::type::named_arg_type) push_back(args.args_[i].value_);
+ }
+}
+
+template <typename Char> struct nonfinite_writer {
+ sign_t sign;
+ const char* str;
+ static constexpr size_t str_size = 3;
+
+ size_t size() const { return str_size + (sign ? 1 : 0); }
+ size_t width() const { return size(); }
+
+ template <typename It> void operator()(It&& it) const {
+ if (sign) *it++ = static_cast<Char>(data::signs[sign]);
+ it = copy_str<Char>(str, str + str_size, it);
+ }
+};
+
+template <typename OutputIt, typename Char>
+FMT_NOINLINE OutputIt fill(OutputIt it, size_t n, const fill_t<Char>& fill) {
+ auto fill_size = fill.size();
+ if (fill_size == 1) return std::fill_n(it, n, fill[0]);
+ for (size_t i = 0; i < n; ++i) it = std::copy_n(fill.data(), fill_size, it);
+ return it;
+}
+
+// This template provides operations for formatting and writing data into a
+// character range.
+template <typename Range> class basic_writer {
+ public:
+ using char_type = typename Range::value_type;
+ using iterator = typename Range::iterator;
+ using format_specs = basic_format_specs<char_type>;
+
+ private:
+ iterator out_; // Output iterator.
+ locale_ref locale_;
+
+ // Attempts to reserve space for n extra characters in the output range.
+ // Returns a pointer to the reserved range or a reference to out_.
+ auto reserve(std::size_t n) -> decltype(internal::reserve(out_, n)) {
+ return internal::reserve(out_, n);
+ }
+
+ template <typename F> struct padded_int_writer {
+ size_t size_;
+ string_view prefix;
+ char_type fill;
+ std::size_t padding;
+ F f;
+
+ size_t size() const { return size_; }
+ size_t width() const { return size_; }
+
+ template <typename It> void operator()(It&& it) const {
+ if (prefix.size() != 0)
+ it = copy_str<char_type>(prefix.begin(), prefix.end(), it);
+ it = std::fill_n(it, padding, fill);
+ f(it);
+ }
+ };
+
+ // Writes an integer in the format
+ // <left-padding><prefix><numeric-padding><digits><right-padding>
+ // where <digits> are written by f(it).
+ template <typename F>
+ void write_int(int num_digits, string_view prefix, format_specs specs, F f) {
+ std::size_t size = prefix.size() + to_unsigned(num_digits);
+ char_type fill = specs.fill[0];
+ std::size_t padding = 0;
+ if (specs.align == align::numeric) {
+ auto unsiged_width = to_unsigned(specs.width);
+ if (unsiged_width > size) {
+ padding = unsiged_width - size;
+ size = unsiged_width;
+ }
+ } else if (specs.precision > num_digits) {
+ size = prefix.size() + to_unsigned(specs.precision);
+ padding = to_unsigned(specs.precision - num_digits);
+ fill = static_cast<char_type>('0');
+ }
+ if (specs.align == align::none) specs.align = align::right;
+ write_padded(specs, padded_int_writer<F>{size, prefix, fill, padding, f});
+ }
+
+ // Writes a decimal integer.
+ template <typename Int> void write_decimal(Int value) {
+ auto abs_value = static_cast<uint32_or_64_or_128_t<Int>>(value);
+ bool negative = is_negative(value);
+ // Don't do -abs_value since it trips unsigned-integer-overflow sanitizer.
+ if (negative) abs_value = ~abs_value + 1;
+ int num_digits = count_digits(abs_value);
+ auto&& it = reserve((negative ? 1 : 0) + static_cast<size_t>(num_digits));
+ if (negative) *it++ = static_cast<char_type>('-');
+ it = format_decimal<char_type>(it, abs_value, num_digits);
+ }
+
+ // The handle_int_type_spec handler that writes an integer.
+ template <typename Int, typename Specs> struct int_writer {
+ using unsigned_type = uint32_or_64_or_128_t<Int>;
+
+ basic_writer<Range>& writer;
+ const Specs& specs;
+ unsigned_type abs_value;
+ char prefix[4];
+ unsigned prefix_size;
+
+ string_view get_prefix() const { return string_view(prefix, prefix_size); }
+
+ int_writer(basic_writer<Range>& w, Int value, const Specs& s)
+ : writer(w),
+ specs(s),
+ abs_value(static_cast<unsigned_type>(value)),
+ prefix_size(0) {
+ if (is_negative(value)) {
+ prefix[0] = '-';
+ ++prefix_size;
+ abs_value = 0 - abs_value;
+ } else if (specs.sign != sign::none && specs.sign != sign::minus) {
+ prefix[0] = specs.sign == sign::plus ? '+' : ' ';
+ ++prefix_size;
+ }
+ }
+
+ struct dec_writer {
+ unsigned_type abs_value;
+ int num_digits;
+
+ template <typename It> void operator()(It&& it) const {
+ it = internal::format_decimal<char_type>(it, abs_value, num_digits);
+ }
+ };
+
+ void on_dec() {
+ int num_digits = count_digits(abs_value);
+ writer.write_int(num_digits, get_prefix(), specs,
+ dec_writer{abs_value, num_digits});
+ }
+
+ struct hex_writer {
+ int_writer& self;
+ int num_digits;
+
+ template <typename It> void operator()(It&& it) const {
+ it = format_uint<4, char_type>(it, self.abs_value, num_digits,
+ self.specs.type != 'x');
+ }
+ };
+
+ void on_hex() {
+ if (specs.alt) {
+ prefix[prefix_size++] = '0';
+ prefix[prefix_size++] = specs.type;
+ }
+ int num_digits = count_digits<4>(abs_value);
+ writer.write_int(num_digits, get_prefix(), specs,
+ hex_writer{*this, num_digits});
+ }
+
+ template <int BITS> struct bin_writer {
+ unsigned_type abs_value;
+ int num_digits;
+
+ template <typename It> void operator()(It&& it) const {
+ it = format_uint<BITS, char_type>(it, abs_value, num_digits);
+ }
+ };
+
+ void on_bin() {
+ if (specs.alt) {
+ prefix[prefix_size++] = '0';
+ prefix[prefix_size++] = static_cast<char>(specs.type);
+ }
+ int num_digits = count_digits<1>(abs_value);
+ writer.write_int(num_digits, get_prefix(), specs,
+ bin_writer<1>{abs_value, num_digits});
+ }
+
+ void on_oct() {
+ int num_digits = count_digits<3>(abs_value);
+ if (specs.alt && specs.precision <= num_digits && abs_value != 0) {
+ // Octal prefix '0' is counted as a digit, so only add it if precision
+ // is not greater than the number of digits.
+ prefix[prefix_size++] = '0';
+ }
+ writer.write_int(num_digits, get_prefix(), specs,
+ bin_writer<3>{abs_value, num_digits});
+ }
+
+ enum { sep_size = 1 };
+
+ struct num_writer {
+ unsigned_type abs_value;
+ int size;
+ const std::string& groups;
+ char_type sep;
+
+ template <typename It> void operator()(It&& it) const {
+ basic_string_view<char_type> s(&sep, sep_size);
+ // Index of a decimal digit with the least significant digit having
+ // index 0.
+ int digit_index = 0;
+ std::string::const_iterator group = groups.cbegin();
+ it = format_decimal<char_type>(
+ it, abs_value, size,
+ [this, s, &group, &digit_index](char_type*& buffer) {
+ if (*group <= 0 || ++digit_index % *group != 0 ||
+ *group == max_value<char>())
+ return;
+ if (group + 1 != groups.cend()) {
+ digit_index = 0;
+ ++group;
+ }
+ buffer -= s.size();
+ std::uninitialized_copy(s.data(), s.data() + s.size(),
+ make_checked(buffer, s.size()));
+ });
+ }
+ };
+
+ void on_num() {
+ std::string groups = grouping<char_type>(writer.locale_);
+ if (groups.empty()) return on_dec();
+ auto sep = thousands_sep<char_type>(writer.locale_);
+ if (!sep) return on_dec();
+ int num_digits = count_digits(abs_value);
+ int size = num_digits;
+ std::string::const_iterator group = groups.cbegin();
+ while (group != groups.cend() && num_digits > *group && *group > 0 &&
+ *group != max_value<char>()) {
+ size += sep_size;
+ num_digits -= *group;
+ ++group;
+ }
+ if (group == groups.cend())
+ size += sep_size * ((num_digits - 1) / groups.back());
+ writer.write_int(size, get_prefix(), specs,
+ num_writer{abs_value, size, groups, sep});
+ }
+
+ FMT_NORETURN void on_error() {
+ FMT_THROW(format_error("invalid type specifier"));
+ }
+ };
+
+ template <typename Char> struct str_writer {
+ const Char* s;
+ size_t size_;
+
+ size_t size() const { return size_; }
+ size_t width() const {
+ return count_code_points(basic_string_view<Char>(s, size_));
+ }
+
+ template <typename It> void operator()(It&& it) const {
+ it = copy_str<char_type>(s, s + size_, it);
+ }
+ };
+
+ struct bytes_writer {
+ string_view bytes;
+
+ size_t size() const { return bytes.size(); }
+ size_t width() const { return bytes.size(); }
+
+ template <typename It> void operator()(It&& it) const {
+ const char* data = bytes.data();
+ it = copy_str<char>(data, data + size(), it);
+ }
+ };
+
+ template <typename UIntPtr> struct pointer_writer {
+ UIntPtr value;
+ int num_digits;
+
+ size_t size() const { return to_unsigned(num_digits) + 2; }
+ size_t width() const { return size(); }
+
+ template <typename It> void operator()(It&& it) const {
+ *it++ = static_cast<char_type>('0');
+ *it++ = static_cast<char_type>('x');
+ it = format_uint<4, char_type>(it, value, num_digits);
+ }
+ };
+
+ public:
+ explicit basic_writer(Range out, locale_ref loc = locale_ref())
+ : out_(out.begin()), locale_(loc) {}
+
+ iterator out() const { return out_; }
+
+ // Writes a value in the format
+ // <left-padding><value><right-padding>
+ // where <value> is written by f(it).
+ template <typename F> void write_padded(const format_specs& specs, F&& f) {
+ // User-perceived width (in code points).
+ unsigned width = to_unsigned(specs.width);
+ size_t size = f.size(); // The number of code units.
+ size_t num_code_points = width != 0 ? f.width() : size;
+ if (width <= num_code_points) return f(reserve(size));
+ size_t padding = width - num_code_points;
+ size_t fill_size = specs.fill.size();
+ auto&& it = reserve(size + padding * fill_size);
+ if (specs.align == align::right) {
+ it = fill(it, padding, specs.fill);
+ f(it);
+ } else if (specs.align == align::center) {
+ std::size_t left_padding = padding / 2;
+ it = fill(it, left_padding, specs.fill);
+ f(it);
+ it = fill(it, padding - left_padding, specs.fill);
+ } else {
+ f(it);
+ it = fill(it, padding, specs.fill);
+ }
+ }
+
+ void write(int value) { write_decimal(value); }
+ void write(long value) { write_decimal(value); }
+ void write(long long value) { write_decimal(value); }
+
+ void write(unsigned value) { write_decimal(value); }
+ void write(unsigned long value) { write_decimal(value); }
+ void write(unsigned long long value) { write_decimal(value); }
+
+#if FMT_USE_INT128
+ void write(int128_t value) { write_decimal(value); }
+ void write(uint128_t value) { write_decimal(value); }
+#endif
+
+ template <typename T, typename Spec>
+ void write_int(T value, const Spec& spec) {
+ handle_int_type_spec(spec.type, int_writer<T, Spec>(*this, value, spec));
+ }
+
+ template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
+ void write(T value, format_specs specs = {}) {
+ if (const_check(!is_supported_floating_point(value))) {
+ return;
+ }
+ float_specs fspecs = parse_float_type_spec(specs);
+ fspecs.sign = specs.sign;
+ if (std::signbit(value)) { // value < 0 is false for NaN so use signbit.
+ fspecs.sign = sign::minus;
+ value = -value;
+ } else if (fspecs.sign == sign::minus) {
+ fspecs.sign = sign::none;
+ }
+
+ if (!std::isfinite(value)) {
+ auto str = std::isinf(value) ? (fspecs.upper ? "INF" : "inf")
+ : (fspecs.upper ? "NAN" : "nan");
+ return write_padded(specs, nonfinite_writer<char_type>{fspecs.sign, str});
+ }
+
+ if (specs.align == align::none) {
+ specs.align = align::right;
+ } else if (specs.align == align::numeric) {
+ if (fspecs.sign) {
+ auto&& it = reserve(1);
+ *it++ = static_cast<char_type>(data::signs[fspecs.sign]);
+ fspecs.sign = sign::none;
+ if (specs.width != 0) --specs.width;
+ }
+ specs.align = align::right;
+ }
+
+ memory_buffer buffer;
+ if (fspecs.format == float_format::hex) {
+ if (fspecs.sign) buffer.push_back(data::signs[fspecs.sign]);
+ snprintf_float(promote_float(value), specs.precision, fspecs, buffer);
+ write_padded(specs, str_writer<char>{buffer.data(), buffer.size()});
+ return;
+ }
+ int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6;
+ if (fspecs.format == float_format::exp) {
+ if (precision == max_value<int>())
+ FMT_THROW(format_error("number is too big"));
+ else
+ ++precision;
+ }
+ if (const_check(std::is_same<T, float>())) fspecs.binary32 = true;
+ fspecs.use_grisu = use_grisu<T>();
+ if (const_check(FMT_DEPRECATED_PERCENT) && fspecs.percent) value *= 100;
+ int exp = format_float(promote_float(value), precision, fspecs, buffer);
+ if (const_check(FMT_DEPRECATED_PERCENT) && fspecs.percent) {
+ buffer.push_back('%');
+ --exp; // Adjust decimal place position.
+ }
+ fspecs.precision = precision;
+ char_type point = fspecs.locale ? decimal_point<char_type>(locale_)
+ : static_cast<char_type>('.');
+ write_padded(specs, float_writer<char_type>(buffer.data(),
+ static_cast<int>(buffer.size()),
+ exp, fspecs, point));
+ }
+
+ void write(char value) {
+ auto&& it = reserve(1);
+ *it++ = value;
+ }
+
+ template <typename Char, FMT_ENABLE_IF(std::is_same<Char, char_type>::value)>
+ void write(Char value) {
+ auto&& it = reserve(1);
+ *it++ = value;
+ }
+
+ void write(string_view value) {
+ auto&& it = reserve(value.size());
+ it = copy_str<char_type>(value.begin(), value.end(), it);
+ }
+ void write(wstring_view value) {
+ static_assert(std::is_same<char_type, wchar_t>::value, "");
+ auto&& it = reserve(value.size());
+ it = std::copy(value.begin(), value.end(), it);
+ }
+
+ template <typename Char>
+ void write(const Char* s, std::size_t size, const format_specs& specs) {
+ write_padded(specs, str_writer<Char>{s, size});
+ }
+
+ template <typename Char>
+ void write(basic_string_view<Char> s, const format_specs& specs = {}) {
+ const Char* data = s.data();
+ std::size_t size = s.size();
+ if (specs.precision >= 0 && to_unsigned(specs.precision) < size)
+ size = code_point_index(s, to_unsigned(specs.precision));
+ write(data, size, specs);
+ }
+
+ void write_bytes(string_view bytes, const format_specs& specs) {
+ write_padded(specs, bytes_writer{bytes});
+ }
+
+ template <typename UIntPtr>
+ void write_pointer(UIntPtr value, const format_specs* specs) {
+ int num_digits = count_digits<4>(value);
+ auto pw = pointer_writer<UIntPtr>{value, num_digits};
+ if (!specs) return pw(reserve(to_unsigned(num_digits) + 2));
+ format_specs specs_copy = *specs;
+ if (specs_copy.align == align::none) specs_copy.align = align::right;
+ write_padded(specs_copy, pw);
+ }
+};
+
+using writer = basic_writer<buffer_range<char>>;
+
+template <typename T> struct is_integral : std::is_integral<T> {};
+template <> struct is_integral<int128_t> : std::true_type {};
+template <> struct is_integral<uint128_t> : std::true_type {};
+
+template <typename Range, typename ErrorHandler = internal::error_handler>
+class arg_formatter_base {
+ public:
+ using char_type = typename Range::value_type;
+ using iterator = typename Range::iterator;
+ using format_specs = basic_format_specs<char_type>;
+
+ private:
+ using writer_type = basic_writer<Range>;
+ writer_type writer_;
+ format_specs* specs_;
+
+ struct char_writer {
+ char_type value;
+
+ size_t size() const { return 1; }
+ size_t width() const { return 1; }
+
+ template <typename It> void operator()(It&& it) const { *it++ = value; }
+ };
+
+ void write_char(char_type value) {
+ if (specs_)
+ writer_.write_padded(*specs_, char_writer{value});
+ else
+ writer_.write(value);
+ }
+
+ void write_pointer(const void* p) {
+ writer_.write_pointer(internal::to_uintptr(p), specs_);
+ }
+
+ protected:
+ writer_type& writer() { return writer_; }
+ FMT_DEPRECATED format_specs* spec() { return specs_; }
+ format_specs* specs() { return specs_; }
+ iterator out() { return writer_.out(); }
+
+ void write(bool value) {
+ string_view sv(value ? "true" : "false");
+ specs_ ? writer_.write(sv, *specs_) : writer_.write(sv);
+ }
+
+ void write(const char_type* value) {
+ if (!value) {
+ FMT_THROW(format_error("string pointer is null"));
+ } else {
+ auto length = std::char_traits<char_type>::length(value);
+ basic_string_view<char_type> sv(value, length);
+ specs_ ? writer_.write(sv, *specs_) : writer_.write(sv);
+ }
+ }
+
+ public:
+ arg_formatter_base(Range r, format_specs* s, locale_ref loc)
+ : writer_(r, loc), specs_(s) {}
+
+ iterator operator()(monostate) {
+ FMT_ASSERT(false, "invalid argument type");
+ return out();
+ }
+
+ template <typename T, FMT_ENABLE_IF(is_integral<T>::value)>
+ iterator operator()(T value) {
+ if (specs_)
+ writer_.write_int(value, *specs_);
+ else
+ writer_.write(value);
+ return out();
+ }
+
+ iterator operator()(char_type value) {
+ internal::handle_char_specs(
+ specs_, char_spec_handler(*this, static_cast<char_type>(value)));
+ return out();
+ }
+
+ iterator operator()(bool value) {
+ if (specs_ && specs_->type) return (*this)(value ? 1 : 0);
+ write(value != 0);
+ return out();
+ }
+
+ template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
+ iterator operator()(T value) {
+ if (const_check(is_supported_floating_point(value)))
+ writer_.write(value, specs_ ? *specs_ : format_specs());
+ else
+ FMT_ASSERT(false, "unsupported float argument type");
+ return out();
+ }
+
+ struct char_spec_handler : ErrorHandler {
+ arg_formatter_base& formatter;
+ char_type value;
+
+ char_spec_handler(arg_formatter_base& f, char_type val)
+ : formatter(f), value(val) {}
+
+ void on_int() {
+ if (formatter.specs_)
+ formatter.writer_.write_int(value, *formatter.specs_);
+ else
+ formatter.writer_.write(value);
+ }
+ void on_char() { formatter.write_char(value); }
+ };
+
+ struct cstring_spec_handler : internal::error_handler {
+ arg_formatter_base& formatter;
+ const char_type* value;
+
+ cstring_spec_handler(arg_formatter_base& f, const char_type* val)
+ : formatter(f), value(val) {}
+
+ void on_string() { formatter.write(value); }
+ void on_pointer() { formatter.write_pointer(value); }
+ };
+
+ iterator operator()(const char_type* value) {
+ if (!specs_) return write(value), out();
+ internal::handle_cstring_type_spec(specs_->type,
+ cstring_spec_handler(*this, value));
+ return out();
+ }
+
+ iterator operator()(basic_string_view<char_type> value) {
+ if (specs_) {
+ internal::check_string_type_spec(specs_->type, internal::error_handler());
+ writer_.write(value, *specs_);
+ } else {
+ writer_.write(value);
+ }
+ return out();
+ }
+
+ iterator operator()(const void* value) {
+ if (specs_)
+ check_pointer_type_spec(specs_->type, internal::error_handler());
+ write_pointer(value);
+ return out();
+ }
+};
+
+template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) {
+ return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
+}
+
+// Parses the range [begin, end) as an unsigned integer. This function assumes
+// that the range is non-empty and the first character is a digit.
+template <typename Char, typename ErrorHandler>
+FMT_CONSTEXPR int parse_nonnegative_int(const Char*& begin, const Char* end,
+ ErrorHandler&& eh) {
+ FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', "");
+ unsigned value = 0;
+ // Convert to unsigned to prevent a warning.
+ constexpr unsigned max_int = max_value<int>();
+ unsigned big = max_int / 10;
+ do {
+ // Check for overflow.
+ if (value > big) {
+ value = max_int + 1;
+ break;
+ }
+ value = value * 10 + unsigned(*begin - '0');
+ ++begin;
+ } while (begin != end && '0' <= *begin && *begin <= '9');
+ if (value > max_int) eh.on_error("number is too big");
+ return static_cast<int>(value);
+}
+
+template <typename Context> class custom_formatter {
+ private:
+ using char_type = typename Context::char_type;
+
+ basic_format_parse_context<char_type>& parse_ctx_;
+ Context& ctx_;
+
+ public:
+ explicit custom_formatter(basic_format_parse_context<char_type>& parse_ctx,
+ Context& ctx)
+ : parse_ctx_(parse_ctx), ctx_(ctx) {}
+
+ bool operator()(typename basic_format_arg<Context>::handle h) const {
+ h.format(parse_ctx_, ctx_);
+ return true;
+ }
+
+ template <typename T> bool operator()(T) const { return false; }
+};
+
+template <typename T>
+using is_integer =
+ bool_constant<is_integral<T>::value && !std::is_same<T, bool>::value &&
+ !std::is_same<T, char>::value &&
+ !std::is_same<T, wchar_t>::value>;
+
+template <typename ErrorHandler> class width_checker {
+ public:
+ explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {}
+
+ template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
+ FMT_CONSTEXPR unsigned long long operator()(T value) {
+ if (is_negative(value)) handler_.on_error("negative width");
+ return static_cast<unsigned long long>(value);
+ }
+
+ template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
+ FMT_CONSTEXPR unsigned long long operator()(T) {
+ handler_.on_error("width is not integer");
+ return 0;
+ }
+
+ private:
+ ErrorHandler& handler_;
+};
+
+template <typename ErrorHandler> class precision_checker {
+ public:
+ explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {}
+
+ template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
+ FMT_CONSTEXPR unsigned long long operator()(T value) {
+ if (is_negative(value)) handler_.on_error("negative precision");
+ return static_cast<unsigned long long>(value);
+ }
+
+ template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
+ FMT_CONSTEXPR unsigned long long operator()(T) {
+ handler_.on_error("precision is not integer");
+ return 0;
+ }
+
+ private:
+ ErrorHandler& handler_;
+};
+
+// A format specifier handler that sets fields in basic_format_specs.
+template <typename Char> class specs_setter {
+ public:
+ explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs)
+ : specs_(specs) {}
+
+ FMT_CONSTEXPR specs_setter(const specs_setter& other)
+ : specs_(other.specs_) {}
+
+ FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; }
+ FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
+ specs_.fill = fill;
+ }
+ FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; }
+ FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; }
+ FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; }
+ FMT_CONSTEXPR void on_hash() { specs_.alt = true; }
+
+ FMT_CONSTEXPR void on_zero() {
+ specs_.align = align::numeric;
+ specs_.fill[0] = Char('0');
+ }
+
+ FMT_CONSTEXPR void on_width(int width) { specs_.width = width; }
+ FMT_CONSTEXPR void on_precision(int precision) {
+ specs_.precision = precision;
+ }
+ FMT_CONSTEXPR void end_precision() {}
+
+ FMT_CONSTEXPR void on_type(Char type) {
+ specs_.type = static_cast<char>(type);
+ }
+
+ protected:
+ basic_format_specs<Char>& specs_;
+};
+
+template <typename ErrorHandler> class numeric_specs_checker {
+ public:
+ FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, internal::type arg_type)
+ : error_handler_(eh), arg_type_(arg_type) {}
+
+ FMT_CONSTEXPR void require_numeric_argument() {
+ if (!is_arithmetic_type(arg_type_))
+ error_handler_.on_error("format specifier requires numeric argument");
+ }
+
+ FMT_CONSTEXPR void check_sign() {
+ require_numeric_argument();
+ if (is_integral_type(arg_type_) && arg_type_ != type::int_type &&
+ arg_type_ != type::long_long_type && arg_type_ != type::char_type) {
+ error_handler_.on_error("format specifier requires signed argument");
+ }
+ }
+
+ FMT_CONSTEXPR void check_precision() {
+ if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type)
+ error_handler_.on_error("precision not allowed for this argument type");
+ }
+
+ private:
+ ErrorHandler& error_handler_;
+ internal::type arg_type_;
+};
+
+// A format specifier handler that checks if specifiers are consistent with the
+// argument type.
+template <typename Handler> class specs_checker : public Handler {
+ public:
+ FMT_CONSTEXPR specs_checker(const Handler& handler, internal::type arg_type)
+ : Handler(handler), checker_(*this, arg_type) {}
+
+ FMT_CONSTEXPR specs_checker(const specs_checker& other)
+ : Handler(other), checker_(*this, other.arg_type_) {}
+
+ FMT_CONSTEXPR void on_align(align_t align) {
+ if (align == align::numeric) checker_.require_numeric_argument();
+ Handler::on_align(align);
+ }
+
+ FMT_CONSTEXPR void on_plus() {
+ checker_.check_sign();
+ Handler::on_plus();
+ }
+
+ FMT_CONSTEXPR void on_minus() {
+ checker_.check_sign();
+ Handler::on_minus();
+ }
+
+ FMT_CONSTEXPR void on_space() {
+ checker_.check_sign();
+ Handler::on_space();
+ }
+
+ FMT_CONSTEXPR void on_hash() {
+ checker_.require_numeric_argument();
+ Handler::on_hash();
+ }
+
+ FMT_CONSTEXPR void on_zero() {
+ checker_.require_numeric_argument();
+ Handler::on_zero();
+ }
+
+ FMT_CONSTEXPR void end_precision() { checker_.check_precision(); }
+
+ private:
+ numeric_specs_checker<Handler> checker_;
+};
+
+template <template <typename> class Handler, typename FormatArg,
+ typename ErrorHandler>
+FMT_CONSTEXPR int get_dynamic_spec(FormatArg arg, ErrorHandler eh) {
+ unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg);
+ if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big");
+ return static_cast<int>(value);
+}
+
+struct auto_id {};
+
+template <typename Context>
+FMT_CONSTEXPR typename Context::format_arg get_arg(Context& ctx, int id) {
+ auto arg = ctx.arg(id);
+ if (!arg) ctx.on_error("argument index out of range");
+ return arg;
+}
+
+// The standard format specifier handler with checking.
+template <typename ParseContext, typename Context>
+class specs_handler : public specs_setter<typename Context::char_type> {
+ public:
+ using char_type = typename Context::char_type;
+
+ FMT_CONSTEXPR specs_handler(basic_format_specs<char_type>& specs,
+ ParseContext& parse_ctx, Context& ctx)
+ : specs_setter<char_type>(specs),
+ parse_context_(parse_ctx),
+ context_(ctx) {}
+
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
+ this->specs_.width = get_dynamic_spec<width_checker>(
+ get_arg(arg_id), context_.error_handler());
+ }
+
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
+ this->specs_.precision = get_dynamic_spec<precision_checker>(
+ get_arg(arg_id), context_.error_handler());
+ }
+
+ void on_error(const char* message) { context_.on_error(message); }
+
+ private:
+ // This is only needed for compatibility with gcc 4.4.
+ using format_arg = typename Context::format_arg;
+
+ FMT_CONSTEXPR format_arg get_arg(auto_id) {
+ return internal::get_arg(context_, parse_context_.next_arg_id());
+ }
+
+ FMT_CONSTEXPR format_arg get_arg(int arg_id) {
+ parse_context_.check_arg_id(arg_id);
+ return internal::get_arg(context_, arg_id);
+ }
+
+ FMT_CONSTEXPR format_arg get_arg(basic_string_view<char_type> arg_id) {
+ parse_context_.check_arg_id(arg_id);
+ return context_.arg(arg_id);
+ }
+
+ ParseContext& parse_context_;
+ Context& context_;
+};
+
+enum class arg_id_kind { none, index, name };
+
+// An argument reference.
+template <typename Char> struct arg_ref {
+ FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {}
+
+ FMT_CONSTEXPR explicit arg_ref(int index)
+ : kind(arg_id_kind::index), val(index) {}
+ FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name)
+ : kind(arg_id_kind::name), val(name) {}
+
+ FMT_CONSTEXPR arg_ref& operator=(int idx) {
+ kind = arg_id_kind::index;
+ val.index = idx;
+ return *this;
+ }
+
+ arg_id_kind kind;
+ union value {
+ FMT_CONSTEXPR value(int id = 0) : index{id} {}
+ FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {}
+
+ int index;
+ basic_string_view<Char> name;
+ } val;
+};
+
+// Format specifiers with width and precision resolved at formatting rather
+// than parsing time to allow re-using the same parsed specifiers with
+// different sets of arguments (precompilation of format strings).
+template <typename Char>
+struct dynamic_format_specs : basic_format_specs<Char> {
+ arg_ref<Char> width_ref;
+ arg_ref<Char> precision_ref;
+};
+
+// Format spec handler that saves references to arguments representing dynamic
+// width and precision to be resolved at formatting time.
+template <typename ParseContext>
+class dynamic_specs_handler
+ : public specs_setter<typename ParseContext::char_type> {
+ public:
+ using char_type = typename ParseContext::char_type;
+
+ FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs,
+ ParseContext& ctx)
+ : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {}
+
+ FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other)
+ : specs_setter<char_type>(other),
+ specs_(other.specs_),
+ context_(other.context_) {}
+
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
+ specs_.width_ref = make_arg_ref(arg_id);
+ }
+
+ template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
+ specs_.precision_ref = make_arg_ref(arg_id);
+ }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ context_.on_error(message);
+ }
+
+ private:
+ using arg_ref_type = arg_ref<char_type>;
+
+ FMT_CONSTEXPR arg_ref_type make_arg_ref(int arg_id) {
+ context_.check_arg_id(arg_id);
+ return arg_ref_type(arg_id);
+ }
+
+ FMT_CONSTEXPR arg_ref_type make_arg_ref(auto_id) {
+ return arg_ref_type(context_.next_arg_id());
+ }
+
+ FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<char_type> arg_id) {
+ context_.check_arg_id(arg_id);
+ basic_string_view<char_type> format_str(
+ context_.begin(), to_unsigned(context_.end() - context_.begin()));
+ return arg_ref_type(arg_id);
+ }
+
+ dynamic_format_specs<char_type>& specs_;
+ ParseContext& context_;
+};
+
+template <typename Char, typename IDHandler>
+FMT_CONSTEXPR const Char* parse_arg_id(const Char* begin, const Char* end,
+ IDHandler&& handler) {
+ FMT_ASSERT(begin != end, "");
+ Char c = *begin;
+ if (c == '}' || c == ':') {
+ handler();
+ return begin;
+ }
+ if (c >= '0' && c <= '9') {
+ int index = 0;
+ if (c != '0')
+ index = parse_nonnegative_int(begin, end, handler);
+ else
+ ++begin;
+ if (begin == end || (*begin != '}' && *begin != ':'))
+ handler.on_error("invalid format string");
+ else
+ handler(index);
+ return begin;
+ }
+ if (!is_name_start(c)) {
+ handler.on_error("invalid format string");
+ return begin;
+ }
+ auto it = begin;
+ do {
+ ++it;
+ } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9')));
+ handler(basic_string_view<Char>(begin, to_unsigned(it - begin)));
+ return it;
+}
+
+// Adapts SpecHandler to IDHandler API for dynamic width.
+template <typename SpecHandler, typename Char> struct width_adapter {
+ explicit FMT_CONSTEXPR width_adapter(SpecHandler& h) : handler(h) {}
+
+ FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); }
+ FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); }
+ FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
+ handler.on_dynamic_width(id);
+ }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ handler.on_error(message);
+ }
+
+ SpecHandler& handler;
+};
+
+// Adapts SpecHandler to IDHandler API for dynamic precision.
+template <typename SpecHandler, typename Char> struct precision_adapter {
+ explicit FMT_CONSTEXPR precision_adapter(SpecHandler& h) : handler(h) {}
+
+ FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); }
+ FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); }
+ FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
+ handler.on_dynamic_precision(id);
+ }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ handler.on_error(message);
+ }
+
+ SpecHandler& handler;
+};
+
+template <typename Char>
+FMT_CONSTEXPR const Char* next_code_point(const Char* begin, const Char* end) {
+ if (const_check(sizeof(Char) != 1) || (*begin & 0x80) == 0) return begin + 1;
+ do {
+ ++begin;
+ } while (begin != end && (*begin & 0xc0) == 0x80);
+ return begin;
+}
+
+// Parses fill and alignment.
+template <typename Char, typename Handler>
+FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end,
+ Handler&& handler) {
+ FMT_ASSERT(begin != end, "");
+ auto align = align::none;
+ auto p = next_code_point(begin, end);
+ if (p == end) p = begin;
+ for (;;) {
+ switch (static_cast<char>(*p)) {
+ case '<':
+ align = align::left;
+ break;
+ case '>':
+ align = align::right;
+ break;
+#if FMT_NUMERIC_ALIGN
+ case '=':
+ align = align::numeric;
+ break;
+#endif
+ case '^':
+ align = align::center;
+ break;
+ }
+ if (align != align::none) {
+ if (p != begin) {
+ auto c = *begin;
+ if (c == '{')
+ return handler.on_error("invalid fill character '{'"), begin;
+ handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin)));
+ begin = p + 1;
+ } else
+ ++begin;
+ handler.on_align(align);
+ break;
+ } else if (p == begin) {
+ break;
+ }
+ p = begin;
+ }
+ return begin;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR const Char* parse_width(const Char* begin, const Char* end,
+ Handler&& handler) {
+ FMT_ASSERT(begin != end, "");
+ if ('0' <= *begin && *begin <= '9') {
+ handler.on_width(parse_nonnegative_int(begin, end, handler));
+ } else if (*begin == '{') {
+ ++begin;
+ if (begin != end)
+ begin = parse_arg_id(begin, end, width_adapter<Handler, Char>(handler));
+ if (begin == end || *begin != '}')
+ return handler.on_error("invalid format string"), begin;
+ ++begin;
+ }
+ return begin;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR const Char* parse_precision(const Char* begin, const Char* end,
+ Handler&& handler) {
+ ++begin;
+ auto c = begin != end ? *begin : Char();
+ if ('0' <= c && c <= '9') {
+ handler.on_precision(parse_nonnegative_int(begin, end, handler));
+ } else if (c == '{') {
+ ++begin;
+ if (begin != end) {
+ begin =
+ parse_arg_id(begin, end, precision_adapter<Handler, Char>(handler));
+ }
+ if (begin == end || *begin++ != '}')
+ return handler.on_error("invalid format string"), begin;
+ } else {
+ return handler.on_error("missing precision specifier"), begin;
+ }
+ handler.end_precision();
+ return begin;
+}
+
+// Parses standard format specifiers and sends notifications about parsed
+// components to handler.
+template <typename Char, typename SpecHandler>
+FMT_CONSTEXPR const Char* parse_format_specs(const Char* begin, const Char* end,
+ SpecHandler&& handler) {
+ if (begin == end || *begin == '}') return begin;
+
+ begin = parse_align(begin, end, handler);
+ if (begin == end) return begin;
+
+ // Parse sign.
+ switch (static_cast<char>(*begin)) {
+ case '+':
+ handler.on_plus();
+ ++begin;
+ break;
+ case '-':
+ handler.on_minus();
+ ++begin;
+ break;
+ case ' ':
+ handler.on_space();
+ ++begin;
+ break;
+ }
+ if (begin == end) return begin;
+
+ if (*begin == '#') {
+ handler.on_hash();
+ if (++begin == end) return begin;
+ }
+
+ // Parse zero flag.
+ if (*begin == '0') {
+ handler.on_zero();
+ if (++begin == end) return begin;
+ }
+
+ begin = parse_width(begin, end, handler);
+ if (begin == end) return begin;
+
+ // Parse precision.
+ if (*begin == '.') {
+ begin = parse_precision(begin, end, handler);
+ }
+
+ // Parse type.
+ if (begin != end && *begin != '}') handler.on_type(*begin++);
+ return begin;
+}
+
+// Return the result via the out param to workaround gcc bug 77539.
+template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
+FMT_CONSTEXPR bool find(Ptr first, Ptr last, T value, Ptr& out) {
+ for (out = first; out != last; ++out) {
+ if (*out == value) return true;
+ }
+ return false;
+}
+
+template <>
+inline bool find<false, char>(const char* first, const char* last, char value,
+ const char*& out) {
+ out = static_cast<const char*>(
+ std::memchr(first, value, internal::to_unsigned(last - first)));
+ return out != nullptr;
+}
+
+template <typename Handler, typename Char> struct id_adapter {
+ FMT_CONSTEXPR void operator()() { handler.on_arg_id(); }
+ FMT_CONSTEXPR void operator()(int id) { handler.on_arg_id(id); }
+ FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
+ handler.on_arg_id(id);
+ }
+ FMT_CONSTEXPR void on_error(const char* message) {
+ handler.on_error(message);
+ }
+ Handler& handler;
+};
+
+template <bool IS_CONSTEXPR, typename Char, typename Handler>
+FMT_CONSTEXPR void parse_format_string(basic_string_view<Char> format_str,
+ Handler&& handler) {
+ struct pfs_writer {
+ FMT_CONSTEXPR void operator()(const Char* begin, const Char* end) {
+ if (begin == end) return;
+ for (;;) {
+ const Char* p = nullptr;
+ if (!find<IS_CONSTEXPR>(begin, end, '}', p))
+ return handler_.on_text(begin, end);
+ ++p;
+ if (p == end || *p != '}')
+ return handler_.on_error("unmatched '}' in format string");
+ handler_.on_text(begin, p);
+ begin = p + 1;
+ }
+ }
+ Handler& handler_;
+ } write{handler};
+ auto begin = format_str.data();
+ auto end = begin + format_str.size();
+ while (begin != end) {
+ // Doing two passes with memchr (one for '{' and another for '}') is up to
+ // 2.5x faster than the naive one-pass implementation on big format strings.
+ const Char* p = begin;
+ if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, '{', p))
+ return write(begin, end);
+ write(begin, p);
+ ++p;
+ if (p == end) return handler.on_error("invalid format string");
+ if (static_cast<char>(*p) == '}') {
+ handler.on_arg_id();
+ handler.on_replacement_field(p);
+ } else if (*p == '{') {
+ handler.on_text(p, p + 1);
+ } else {
+ p = parse_arg_id(p, end, id_adapter<Handler, Char>{handler});
+ Char c = p != end ? *p : Char();
+ if (c == '}') {
+ handler.on_replacement_field(p);
+ } else if (c == ':') {
+ p = handler.on_format_specs(p + 1, end);
+ if (p == end || *p != '}')
+ return handler.on_error("unknown format specifier");
+ } else {
+ return handler.on_error("missing '}' in format string");
+ }
+ }
+ begin = p + 1;
+ }
+}
+
+template <typename T, typename ParseContext>
+FMT_CONSTEXPR const typename ParseContext::char_type* parse_format_specs(
+ ParseContext& ctx) {
+ using char_type = typename ParseContext::char_type;
+ using context = buffer_context<char_type>;
+ using mapped_type =
+ conditional_t<internal::mapped_type_constant<T, context>::value !=
+ type::custom_type,
+ decltype(arg_mapper<context>().map(std::declval<T>())), T>;
+ auto f = conditional_t<has_formatter<mapped_type, context>::value,
+ formatter<mapped_type, char_type>,
+ internal::fallback_formatter<T, char_type>>();
+ return f.parse(ctx);
+}
+
+template <typename Char, typename ErrorHandler, typename... Args>
+class format_string_checker {
+ public:
+ explicit FMT_CONSTEXPR format_string_checker(
+ basic_string_view<Char> format_str, ErrorHandler eh)
+ : arg_id_(-1),
+ context_(format_str, eh),
+ parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {}
+
+ FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
+
+ FMT_CONSTEXPR void on_arg_id() {
+ arg_id_ = context_.next_arg_id();
+ check_arg_id();
+ }
+ FMT_CONSTEXPR void on_arg_id(int id) {
+ arg_id_ = id;
+ context_.check_arg_id(id);
+ check_arg_id();
+ }
+ FMT_CONSTEXPR void on_arg_id(basic_string_view<Char>) {
+ on_error("compile-time checks don't support named arguments");
+ }
+
+ FMT_CONSTEXPR void on_replacement_field(const Char*) {}
+
+ FMT_CONSTEXPR const Char* on_format_specs(const Char* begin, const Char*) {
+ advance_to(context_, begin);
+ return arg_id_ < num_args ? parse_funcs_[arg_id_](context_) : begin;
+ }
+
+ FMT_CONSTEXPR void on_error(const char* message) {
+ context_.on_error(message);
+ }
+
+ private:
+ using parse_context_type = basic_format_parse_context<Char, ErrorHandler>;
+ enum { num_args = sizeof...(Args) };
+
+ FMT_CONSTEXPR void check_arg_id() {
+ if (arg_id_ >= num_args) context_.on_error("argument index out of range");
+ }
+
+ // Format specifier parsing function.
+ using parse_func = const Char* (*)(parse_context_type&);
+
+ int arg_id_;
+ parse_context_type context_;
+ parse_func parse_funcs_[num_args > 0 ? num_args : 1];
+};
+
+template <typename Char, typename ErrorHandler, typename... Args>
+FMT_CONSTEXPR bool do_check_format_string(basic_string_view<Char> s,
+ ErrorHandler eh = ErrorHandler()) {
+ format_string_checker<Char, ErrorHandler, Args...> checker(s, eh);
+ parse_format_string<true>(s, checker);
+ return true;
+}
+
+template <typename... Args, typename S,
+ enable_if_t<(is_compile_string<S>::value), int>>
+void check_format_string(S format_str) {
+ FMT_CONSTEXPR_DECL bool invalid_format = internal::do_check_format_string<
+ typename S::char_type, internal::error_handler,
+ remove_const_t<remove_reference_t<Args>>...>(to_string_view(format_str));
+ (void)invalid_format;
+}
+
+template <template <typename> class Handler, typename Context>
+void handle_dynamic_spec(int& value, arg_ref<typename Context::char_type> ref,
+ Context& ctx) {
+ switch (ref.kind) {
+ case arg_id_kind::none:
+ break;
+ case arg_id_kind::index:
+ value = internal::get_dynamic_spec<Handler>(ctx.arg(ref.val.index),
+ ctx.error_handler());
+ break;
+ case arg_id_kind::name:
+ value = internal::get_dynamic_spec<Handler>(ctx.arg(ref.val.name),
+ ctx.error_handler());
+ break;
+ }
+}
+
+using format_func = void (*)(internal::buffer<char>&, int, string_view);
+
+FMT_API void format_error_code(buffer<char>& out, int error_code,
+ string_view message) FMT_NOEXCEPT;
+
+FMT_API void report_error(format_func func, int error_code,
+ string_view message) FMT_NOEXCEPT;
+} // namespace internal
+
+template <typename Range>
+using basic_writer FMT_DEPRECATED_ALIAS = internal::basic_writer<Range>;
+using writer FMT_DEPRECATED_ALIAS = internal::writer;
+using wwriter FMT_DEPRECATED_ALIAS =
+ internal::basic_writer<buffer_range<wchar_t>>;
+
+/** The default argument formatter. */
+template <typename Range>
+class arg_formatter : public internal::arg_formatter_base<Range> {
+ private:
+ using char_type = typename Range::value_type;
+ using base = internal::arg_formatter_base<Range>;
+ using context_type = basic_format_context<typename base::iterator, char_type>;
+
+ context_type& ctx_;
+ basic_format_parse_context<char_type>* parse_ctx_;
+
+ public:
+ using range = Range;
+ using iterator = typename base::iterator;
+ using format_specs = typename base::format_specs;
+
+ /**
+ \rst
+ Constructs an argument formatter object.
+ *ctx* is a reference to the formatting context,
+ *specs* contains format specifier information for standard argument types.
+ \endrst
+ */
+ explicit arg_formatter(
+ context_type& ctx,
+ basic_format_parse_context<char_type>* parse_ctx = nullptr,
+ format_specs* specs = nullptr)
+ : base(Range(ctx.out()), specs, ctx.locale()),
+ ctx_(ctx),
+ parse_ctx_(parse_ctx) {}
+
+ using base::operator();
+
+ /** Formats an argument of a user-defined type. */
+ iterator operator()(typename basic_format_arg<context_type>::handle handle) {
+ handle.format(*parse_ctx_, ctx_);
+ return ctx_.out();
+ }
+};
+
+/**
+ An error returned by an operating system or a language runtime,
+ for example a file opening error.
+*/
+FMT_CLASS_API
+class FMT_API system_error : public std::runtime_error {
+ private:
+ void init(int err_code, string_view format_str, format_args args);
+
+ protected:
+ int error_code_;
+
+ system_error() : std::runtime_error(""), error_code_(0) {}
+
+ public:
+ /**
+ \rst
+ Constructs a :class:`fmt::system_error` object with a description
+ formatted with `fmt::format_system_error`. *message* and additional
+ arguments passed into the constructor are formatted similarly to
+ `fmt::format`.
+
+ **Example**::
+
+ // This throws a system_error with the description
+ // cannot open file 'madeup': No such file or directory
+ // or similar (system message may vary).
+ const char *filename = "madeup";
+ std::FILE *file = std::fopen(filename, "r");
+ if (!file)
+ throw fmt::system_error(errno, "cannot open file '{}'", filename);
+ \endrst
+ */
+ template <typename... Args>
+ system_error(int error_code, string_view message, const Args&... args)
+ : std::runtime_error("") {
+ init(error_code, message, make_format_args(args...));
+ }
+ system_error(const system_error&) = default;
+ system_error& operator=(const system_error&) = default;
+ system_error(system_error&&) = default;
+ system_error& operator=(system_error&&) = default;
+ ~system_error() FMT_NOEXCEPT FMT_OVERRIDE;
+
+ int error_code() const { return error_code_; }
+};
+
+/**
+ \rst
+ Formats an error returned by an operating system or a language runtime,
+ for example a file opening error, and writes it to *out* in the following
+ form:
+
+ .. parsed-literal::
+ *<message>*: *<system-message>*
+
+ where *<message>* is the passed message and *<system-message>* is
+ the system message corresponding to the error code.
+ *error_code* is a system error code as given by ``errno``.
+ If *error_code* is not a valid error code such as -1, the system message
+ may look like "Unknown error -1" and is platform-dependent.
+ \endrst
+ */
+FMT_API void format_system_error(internal::buffer<char>& out, int error_code,
+ string_view message) FMT_NOEXCEPT;
+
+// Reports a system error without throwing an exception.
+// Can be used to report errors from destructors.
+FMT_API void report_system_error(int error_code,
+ string_view message) FMT_NOEXCEPT;
+
+/** Fast integer formatter. */
+class format_int {
+ private:
+ // Buffer should be large enough to hold all digits (digits10 + 1),
+ // a sign and a null character.
+ enum { buffer_size = std::numeric_limits<unsigned long long>::digits10 + 3 };
+ mutable char buffer_[buffer_size];
+ char* str_;
+
+ // Formats value in reverse and returns a pointer to the beginning.
+ char* format_decimal(unsigned long long value) {
+ char* ptr = buffer_ + (buffer_size - 1); // Parens to workaround MSVC bug.
+ while (value >= 100) {
+ // Integer division is slow so do it for a group of two digits instead
+ // of for every digit. The idea comes from the talk by Alexandrescu
+ // "Three Optimization Tips for C++". See speed-test for a comparison.
+ auto index = static_cast<unsigned>((value % 100) * 2);
+ value /= 100;
+ *--ptr = internal::data::digits[index + 1];
+ *--ptr = internal::data::digits[index];
+ }
+ if (value < 10) {
+ *--ptr = static_cast<char>('0' + value);
+ return ptr;
+ }
+ auto index = static_cast<unsigned>(value * 2);
+ *--ptr = internal::data::digits[index + 1];
+ *--ptr = internal::data::digits[index];
+ return ptr;
+ }
+
+ void format_signed(long long value) {
+ auto abs_value = static_cast<unsigned long long>(value);
+ bool negative = value < 0;
+ if (negative) abs_value = 0 - abs_value;
+ str_ = format_decimal(abs_value);
+ if (negative) *--str_ = '-';
+ }
+
+ public:
+ explicit format_int(int value) { format_signed(value); }
+ explicit format_int(long value) { format_signed(value); }
+ explicit format_int(long long value) { format_signed(value); }
+ explicit format_int(unsigned value) : str_(format_decimal(value)) {}
+ explicit format_int(unsigned long value) : str_(format_decimal(value)) {}
+ explicit format_int(unsigned long long value) : str_(format_decimal(value)) {}
+
+ /** Returns the number of characters written to the output buffer. */
+ std::size_t size() const {
+ return internal::to_unsigned(buffer_ - str_ + buffer_size - 1);
+ }
+
+ /**
+ Returns a pointer to the output buffer content. No terminating null
+ character is appended.
+ */
+ const char* data() const { return str_; }
+
+ /**
+ Returns a pointer to the output buffer content with terminating null
+ character appended.
+ */
+ const char* c_str() const {
+ buffer_[buffer_size - 1] = '\0';
+ return str_;
+ }
+
+ /**
+ \rst
+ Returns the content of the output buffer as an ``std::string``.
+ \endrst
+ */
+ std::string str() const { return std::string(str_, size()); }
+};
+
+// A formatter specialization for the core types corresponding to internal::type
+// constants.
+template <typename T, typename Char>
+struct formatter<T, Char,
+ enable_if_t<internal::type_constant<T, Char>::value !=
+ internal::type::custom_type>> {
+ FMT_CONSTEXPR formatter() = default;
+
+ // Parses format specifiers stopping either at the end of the range or at the
+ // terminating '}'.
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ using handler_type = internal::dynamic_specs_handler<ParseContext>;
+ auto type = internal::type_constant<T, Char>::value;
+ internal::specs_checker<handler_type> handler(handler_type(specs_, ctx),
+ type);
+ auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
+ auto eh = ctx.error_handler();
+ switch (type) {
+ case internal::type::none_type:
+ case internal::type::named_arg_type:
+ FMT_ASSERT(false, "invalid argument type");
+ break;
+ case internal::type::int_type:
+ case internal::type::uint_type:
+ case internal::type::long_long_type:
+ case internal::type::ulong_long_type:
+ case internal::type::int128_type:
+ case internal::type::uint128_type:
+ case internal::type::bool_type:
+ handle_int_type_spec(specs_.type,
+ internal::int_type_checker<decltype(eh)>(eh));
+ break;
+ case internal::type::char_type:
+ handle_char_specs(
+ &specs_, internal::char_specs_checker<decltype(eh)>(specs_.type, eh));
+ break;
+ case internal::type::float_type:
+ if (internal::const_check(FMT_USE_FLOAT)) {
+ internal::parse_float_type_spec(specs_, eh);
+ } else {
+ FMT_ASSERT(false, "float support disabled");
+ }
+ break;
+ case internal::type::double_type:
+ if (internal::const_check(FMT_USE_DOUBLE)) {
+ internal::parse_float_type_spec(specs_, eh);
+ } else {
+ FMT_ASSERT(false, "double support disabled");
+ }
+ break;
+ case internal::type::long_double_type:
+ if (internal::const_check(FMT_USE_LONG_DOUBLE)) {
+ internal::parse_float_type_spec(specs_, eh);
+ } else {
+ FMT_ASSERT(false, "long double support disabled");
+ }
+ break;
+ case internal::type::cstring_type:
+ internal::handle_cstring_type_spec(
+ specs_.type, internal::cstring_type_checker<decltype(eh)>(eh));
+ break;
+ case internal::type::string_type:
+ internal::check_string_type_spec(specs_.type, eh);
+ break;
+ case internal::type::pointer_type:
+ internal::check_pointer_type_spec(specs_.type, eh);
+ break;
+ case internal::type::custom_type:
+ // Custom format specifiers should be checked in parse functions of
+ // formatter specializations.
+ break;
+ }
+ return it;
+ }
+
+ template <typename FormatContext>
+ auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) {
+ internal::handle_dynamic_spec<internal::width_checker>(
+ specs_.width, specs_.width_ref, ctx);
+ internal::handle_dynamic_spec<internal::precision_checker>(
+ specs_.precision, specs_.precision_ref, ctx);
+ using range_type =
+ internal::output_range<typename FormatContext::iterator,
+ typename FormatContext::char_type>;
+ return visit_format_arg(arg_formatter<range_type>(ctx, nullptr, &specs_),
+ internal::make_arg<FormatContext>(val));
+ }
+
+ private:
+ internal::dynamic_format_specs<Char> specs_;
+};
+
+#define FMT_FORMAT_AS(Type, Base) \
+ template <typename Char> \
+ struct formatter<Type, Char> : formatter<Base, Char> { \
+ template <typename FormatContext> \
+ auto format(Type const& val, FormatContext& ctx) -> decltype(ctx.out()) { \
+ return formatter<Base, Char>::format(val, ctx); \
+ } \
+ }
+
+FMT_FORMAT_AS(signed char, int);
+FMT_FORMAT_AS(unsigned char, unsigned);
+FMT_FORMAT_AS(short, int);
+FMT_FORMAT_AS(unsigned short, unsigned);
+FMT_FORMAT_AS(long, long long);
+FMT_FORMAT_AS(unsigned long, unsigned long long);
+FMT_FORMAT_AS(Char*, const Char*);
+FMT_FORMAT_AS(std::basic_string<Char>, basic_string_view<Char>);
+FMT_FORMAT_AS(std::nullptr_t, const void*);
+FMT_FORMAT_AS(internal::std_string_view<Char>, basic_string_view<Char>);
+
+template <typename Char>
+struct formatter<void*, Char> : formatter<const void*, Char> {
+ template <typename FormatContext>
+ auto format(void* val, FormatContext& ctx) -> decltype(ctx.out()) {
+ return formatter<const void*, Char>::format(val, ctx);
+ }
+};
+
+template <typename Char, size_t N>
+struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> {
+ template <typename FormatContext>
+ auto format(const Char* val, FormatContext& ctx) -> decltype(ctx.out()) {
+ return formatter<basic_string_view<Char>, Char>::format(val, ctx);
+ }
+};
+
+// A formatter for types known only at run time such as variant alternatives.
+//
+// Usage:
+// using variant = std::variant<int, std::string>;
+// template <>
+// struct formatter<variant>: dynamic_formatter<> {
+// void format(buffer &buf, const variant &v, context &ctx) {
+// visit([&](const auto &val) { format(buf, val, ctx); }, v);
+// }
+// };
+template <typename Char = char> class dynamic_formatter {
+ private:
+ struct null_handler : internal::error_handler {
+ void on_align(align_t) {}
+ void on_plus() {}
+ void on_minus() {}
+ void on_space() {}
+ void on_hash() {}
+ };
+
+ public:
+ template <typename ParseContext>
+ auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ format_str_ = ctx.begin();
+ // Checks are deferred to formatting time when the argument type is known.
+ internal::dynamic_specs_handler<ParseContext> handler(specs_, ctx);
+ return parse_format_specs(ctx.begin(), ctx.end(), handler);
+ }
+
+ template <typename T, typename FormatContext>
+ auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) {
+ handle_specs(ctx);
+ internal::specs_checker<null_handler> checker(
+ null_handler(),
+ internal::mapped_type_constant<T, FormatContext>::value);
+ checker.on_align(specs_.align);
+ switch (specs_.sign) {
+ case sign::none:
+ break;
+ case sign::plus:
+ checker.on_plus();
+ break;
+ case sign::minus:
+ checker.on_minus();
+ break;
+ case sign::space:
+ checker.on_space();
+ break;
+ }
+ if (specs_.alt) checker.on_hash();
+ if (specs_.precision >= 0) checker.end_precision();
+ using range = internal::output_range<typename FormatContext::iterator,
+ typename FormatContext::char_type>;
+ visit_format_arg(arg_formatter<range>(ctx, nullptr, &specs_),
+ internal::make_arg<FormatContext>(val));
+ return ctx.out();
+ }
+
+ private:
+ template <typename Context> void handle_specs(Context& ctx) {
+ internal::handle_dynamic_spec<internal::width_checker>(
+ specs_.width, specs_.width_ref, ctx);
+ internal::handle_dynamic_spec<internal::precision_checker>(
+ specs_.precision, specs_.precision_ref, ctx);
+ }
+
+ internal::dynamic_format_specs<Char> specs_;
+ const Char* format_str_;
+};
+
+template <typename Range, typename Char>
+typename basic_format_context<Range, Char>::format_arg
+basic_format_context<Range, Char>::arg(basic_string_view<char_type> name) {
+ map_.init(args_);
+ format_arg arg = map_.find(name);
+ if (arg.type() == internal::type::none_type)
+ this->on_error("argument not found");
+ return arg;
+}
+
+template <typename Char, typename ErrorHandler>
+FMT_CONSTEXPR void advance_to(
+ basic_format_parse_context<Char, ErrorHandler>& ctx, const Char* p) {
+ ctx.advance_to(ctx.begin() + (p - &*ctx.begin()));
+}
+
+template <typename ArgFormatter, typename Char, typename Context>
+struct format_handler : internal::error_handler {
+ using range = typename ArgFormatter::range;
+
+ format_handler(range r, basic_string_view<Char> str,
+ basic_format_args<Context> format_args,
+ internal::locale_ref loc)
+ : parse_context(str), context(r.begin(), format_args, loc) {}
+
+ void on_text(const Char* begin, const Char* end) {
+ auto size = internal::to_unsigned(end - begin);
+ auto out = context.out();
+ auto&& it = internal::reserve(out, size);
+ it = std::copy_n(begin, size, it);
+ context.advance_to(out);
+ }
+
+ void get_arg(int id) { arg = internal::get_arg(context, id); }
+
+ void on_arg_id() { get_arg(parse_context.next_arg_id()); }
+ void on_arg_id(int id) {
+ parse_context.check_arg_id(id);
+ get_arg(id);
+ }
+ void on_arg_id(basic_string_view<Char> id) { arg = context.arg(id); }
+
+ void on_replacement_field(const Char* p) {
+ advance_to(parse_context, p);
+ context.advance_to(
+ visit_format_arg(ArgFormatter(context, &parse_context), arg));
+ }
+
+ const Char* on_format_specs(const Char* begin, const Char* end) {
+ advance_to(parse_context, begin);
+ internal::custom_formatter<Context> f(parse_context, context);
+ if (visit_format_arg(f, arg)) return parse_context.begin();
+ basic_format_specs<Char> specs;
+ using internal::specs_handler;
+ using parse_context_t = basic_format_parse_context<Char>;
+ internal::specs_checker<specs_handler<parse_context_t, Context>> handler(
+ specs_handler<parse_context_t, Context>(specs, parse_context, context),
+ arg.type());
+ begin = parse_format_specs(begin, end, handler);
+ if (begin == end || *begin != '}') on_error("missing '}' in format string");
+ advance_to(parse_context, begin);
+ context.advance_to(
+ visit_format_arg(ArgFormatter(context, &parse_context, &specs), arg));
+ return begin;
+ }
+
+ basic_format_parse_context<Char> parse_context;
+ Context context;
+ basic_format_arg<Context> arg;
+};
+
+/** Formats arguments and writes the output to the range. */
+template <typename ArgFormatter, typename Char, typename Context>
+typename Context::iterator vformat_to(
+ typename ArgFormatter::range out, basic_string_view<Char> format_str,
+ basic_format_args<Context> args,
+ internal::locale_ref loc = internal::locale_ref()) {
+ format_handler<ArgFormatter, Char, Context> h(out, format_str, args, loc);
+ internal::parse_format_string<false>(format_str, h);
+ return h.context.out();
+}
+
+// Casts ``p`` to ``const void*`` for pointer formatting.
+// Example:
+// auto s = format("{}", ptr(p));
+template <typename T> inline const void* ptr(const T* p) { return p; }
+template <typename T> inline const void* ptr(const std::unique_ptr<T>& p) {
+ return p.get();
+}
+template <typename T> inline const void* ptr(const std::shared_ptr<T>& p) {
+ return p.get();
+}
+
+class bytes {
+ private:
+ string_view data_;
+ friend struct formatter<bytes>;
+
+ public:
+ explicit bytes(string_view data) : data_(data) {}
+};
+
+template <> struct formatter<bytes> {
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ using handler_type = internal::dynamic_specs_handler<ParseContext>;
+ internal::specs_checker<handler_type> handler(handler_type(specs_, ctx),
+ internal::type::string_type);
+ auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
+ internal::check_string_type_spec(specs_.type, ctx.error_handler());
+ return it;
+ }
+
+ template <typename FormatContext>
+ auto format(bytes b, FormatContext& ctx) -> decltype(ctx.out()) {
+ internal::handle_dynamic_spec<internal::width_checker>(
+ specs_.width, specs_.width_ref, ctx);
+ internal::handle_dynamic_spec<internal::precision_checker>(
+ specs_.precision, specs_.precision_ref, ctx);
+ using range_type =
+ internal::output_range<typename FormatContext::iterator, char>;
+ internal::basic_writer<range_type> writer(range_type(ctx.out()));
+ writer.write_bytes(b.data_, specs_);
+ return writer.out();
+ }
+
+ private:
+ internal::dynamic_format_specs<char> specs_;
+};
+
+template <typename It, typename Char> struct arg_join : internal::view {
+ It begin;
+ It end;
+ basic_string_view<Char> sep;
+
+ arg_join(It b, It e, basic_string_view<Char> s) : begin(b), end(e), sep(s) {}
+};
+
+template <typename It, typename Char>
+struct formatter<arg_join<It, Char>, Char>
+ : formatter<typename std::iterator_traits<It>::value_type, Char> {
+ template <typename FormatContext>
+ auto format(const arg_join<It, Char>& value, FormatContext& ctx)
+ -> decltype(ctx.out()) {
+ using base = formatter<typename std::iterator_traits<It>::value_type, Char>;
+ auto it = value.begin;
+ auto out = ctx.out();
+ if (it != value.end) {
+ out = base::format(*it++, ctx);
+ while (it != value.end) {
+ out = std::copy(value.sep.begin(), value.sep.end(), out);
+ ctx.advance_to(out);
+ out = base::format(*it++, ctx);
+ }
+ }
+ return out;
+ }
+};
+
+/**
+ Returns an object that formats the iterator range `[begin, end)` with elements
+ separated by `sep`.
+ */
+template <typename It>
+arg_join<It, char> join(It begin, It end, string_view sep) {
+ return {begin, end, sep};
+}
+
+template <typename It>
+arg_join<It, wchar_t> join(It begin, It end, wstring_view sep) {
+ return {begin, end, sep};
+}
+
+/**
+ \rst
+ Returns an object that formats `range` with elements separated by `sep`.
+
+ **Example**::
+
+ std::vector<int> v = {1, 2, 3};
+ fmt::print("{}", fmt::join(v, ", "));
+ // Output: "1, 2, 3"
+
+ ``fmt::join`` applies passed format specifiers to the range elements::
+
+ fmt::print("{:02}", fmt::join(v, ", "));
+ // Output: "01, 02, 03"
+ \endrst
+ */
+template <typename Range>
+arg_join<internal::iterator_t<const Range>, char> join(const Range& range,
+ string_view sep) {
+ return join(std::begin(range), std::end(range), sep);
+}
+
+template <typename Range>
+arg_join<internal::iterator_t<const Range>, wchar_t> join(const Range& range,
+ wstring_view sep) {
+ return join(std::begin(range), std::end(range), sep);
+}
+
+/**
+ \rst
+ Converts *value* to ``std::string`` using the default format for type *T*.
+
+ **Example**::
+
+ #include <fmt/format.h>
+
+ std::string answer = fmt::to_string(42);
+ \endrst
+ */
+template <typename T> inline std::string to_string(const T& value) {
+ return format("{}", value);
+}
+
+/**
+ Converts *value* to ``std::wstring`` using the default format for type *T*.
+ */
+template <typename T> inline std::wstring to_wstring(const T& value) {
+ return format(L"{}", value);
+}
+
+template <typename Char, std::size_t SIZE>
+std::basic_string<Char> to_string(const basic_memory_buffer<Char, SIZE>& buf) {
+ return std::basic_string<Char>(buf.data(), buf.size());
+}
+
+template <typename Char>
+typename buffer_context<Char>::iterator internal::vformat_to(
+ internal::buffer<Char>& buf, basic_string_view<Char> format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+ using range = buffer_range<Char>;
+ return vformat_to<arg_formatter<range>>(buf, to_string_view(format_str),
+ args);
+}
+
+template <typename S, typename Char = char_t<S>,
+ FMT_ENABLE_IF(internal::is_string<S>::value)>
+inline typename buffer_context<Char>::iterator vformat_to(
+ internal::buffer<Char>& buf, const S& format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+ return internal::vformat_to(buf, to_string_view(format_str), args);
+}
+
+template <typename S, typename... Args, std::size_t SIZE = inline_buffer_size,
+ typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>>
+inline typename buffer_context<Char>::iterator format_to(
+ basic_memory_buffer<Char, SIZE>& buf, const S& format_str, Args&&... args) {
+ internal::check_format_string<Args...>(format_str);
+ using context = buffer_context<Char>;
+ return internal::vformat_to(buf, to_string_view(format_str),
+ make_format_args<context>(args...));
+}
+
+template <typename OutputIt, typename Char = char>
+using format_context_t = basic_format_context<OutputIt, Char>;
+
+template <typename OutputIt, typename Char = char>
+using format_args_t = basic_format_args<format_context_t<OutputIt, Char>>;
+
+template <typename S, typename OutputIt, typename... Args,
+ FMT_ENABLE_IF(
+ internal::is_output_iterator<OutputIt>::value &&
+ !internal::is_contiguous_back_insert_iterator<OutputIt>::value)>
+inline OutputIt vformat_to(
+ OutputIt out, const S& format_str,
+ format_args_t<type_identity_t<OutputIt>, char_t<S>> args) {
+ using range = internal::output_range<OutputIt, char_t<S>>;
+ return vformat_to<arg_formatter<range>>(range(out),
+ to_string_view(format_str), args);
+}
+
+/**
+ \rst
+ Formats arguments, writes the result to the output iterator ``out`` and returns
+ the iterator past the end of the output range.
+
+ **Example**::
+
+ std::vector<char> out;
+ fmt::format_to(std::back_inserter(out), "{}", 42);
+ \endrst
+ */
+template <typename OutputIt, typename S, typename... Args,
+ FMT_ENABLE_IF(
+ internal::is_output_iterator<OutputIt>::value &&
+ !internal::is_contiguous_back_insert_iterator<OutputIt>::value &&
+ internal::is_string<S>::value)>
+inline OutputIt format_to(OutputIt out, const S& format_str, Args&&... args) {
+ internal::check_format_string<Args...>(format_str);
+ using context = format_context_t<OutputIt, char_t<S>>;
+ return vformat_to(out, to_string_view(format_str),
+ make_format_args<context>(args...));
+}
+
+template <typename OutputIt> struct format_to_n_result {
+ /** Iterator past the end of the output range. */
+ OutputIt out;
+ /** Total (not truncated) output size. */
+ std::size_t size;
+};
+
+template <typename OutputIt, typename Char = typename OutputIt::value_type>
+using format_to_n_context =
+ format_context_t<internal::truncating_iterator<OutputIt>, Char>;
+
+template <typename OutputIt, typename Char = typename OutputIt::value_type>
+using format_to_n_args = basic_format_args<format_to_n_context<OutputIt, Char>>;
+
+template <typename OutputIt, typename Char, typename... Args>
+inline format_arg_store<format_to_n_context<OutputIt, Char>, Args...>
+make_format_to_n_args(const Args&... args) {
+ return format_arg_store<format_to_n_context<OutputIt, Char>, Args...>(
+ args...);
+}
+
+template <typename OutputIt, typename Char, typename... Args,
+ FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)>
+inline format_to_n_result<OutputIt> vformat_to_n(
+ OutputIt out, std::size_t n, basic_string_view<Char> format_str,
+ format_to_n_args<type_identity_t<OutputIt>, type_identity_t<Char>> args) {
+ auto it = vformat_to(internal::truncating_iterator<OutputIt>(out, n),
+ format_str, args);
+ return {it.base(), it.count()};
+}
+
+/**
+ \rst
+ Formats arguments, writes up to ``n`` characters of the result to the output
+ iterator ``out`` and returns the total output size and the iterator past the
+ end of the output range.
+ \endrst
+ */
+template <typename OutputIt, typename S, typename... Args,
+ FMT_ENABLE_IF(internal::is_string<S>::value&&
+ internal::is_output_iterator<OutputIt>::value)>
+inline format_to_n_result<OutputIt> format_to_n(OutputIt out, std::size_t n,
+ const S& format_str,
+ const Args&... args) {
+ internal::check_format_string<Args...>(format_str);
+ using context = format_to_n_context<OutputIt, char_t<S>>;
+ return vformat_to_n(out, n, to_string_view(format_str),
+ make_format_args<context>(args...));
+}
+
+template <typename Char>
+inline std::basic_string<Char> internal::vformat(
+ basic_string_view<Char> format_str,
+ basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+ basic_memory_buffer<Char> buffer;
+ internal::vformat_to(buffer, format_str, args);
+ return to_string(buffer);
+}
+
+/**
+ Returns the number of characters in the output of
+ ``format(format_str, args...)``.
+ */
+template <typename... Args>
+inline std::size_t formatted_size(string_view format_str, const Args&... args) {
+ return format_to(internal::counting_iterator(), format_str, args...).count();
+}
+
+template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)>
+void vprint(std::FILE* f, basic_string_view<Char> format_str,
+ wformat_args args) {
+ wmemory_buffer buffer;
+ internal::vformat_to(buffer, format_str, args);
+ buffer.push_back(L'\0');
+ if (std::fputws(buffer.data(), f) == -1)
+ FMT_THROW(system_error(errno, "cannot write to file"));
+}
+
+template <typename Char, FMT_ENABLE_IF(std::is_same<Char, wchar_t>::value)>
+void vprint(basic_string_view<Char> format_str, wformat_args args) {
+ vprint(stdout, format_str, args);
+}
+
+#if FMT_USE_USER_DEFINED_LITERALS
+namespace internal {
+
+# if FMT_USE_UDL_TEMPLATE
+template <typename Char, Char... CHARS> class udl_formatter {
+ public:
+ template <typename... Args>
+ std::basic_string<Char> operator()(Args&&... args) const {
+ FMT_CONSTEXPR_DECL Char s[] = {CHARS..., '\0'};
+ FMT_CONSTEXPR_DECL bool invalid_format =
+ do_check_format_string<Char, error_handler, remove_cvref_t<Args>...>(
+ basic_string_view<Char>(s, sizeof...(CHARS)));
+ (void)invalid_format;
+ return format(s, std::forward<Args>(args)...);
+ }
+};
+# else
+template <typename Char> struct udl_formatter {
+ basic_string_view<Char> str;
+
+ template <typename... Args>
+ std::basic_string<Char> operator()(Args&&... args) const {
+ return format(str, std::forward<Args>(args)...);
+ }
+};
+# endif // FMT_USE_UDL_TEMPLATE
+
+template <typename Char> struct udl_arg {
+ basic_string_view<Char> str;
+
+ template <typename T> named_arg<T, Char> operator=(T&& value) const {
+ return {str, std::forward<T>(value)};
+ }
+};
+
+// Converts string literals to basic_string_view.
+template <typename Char, size_t N>
+FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view(
+ const Char (&s)[N]) {
+ // Remove trailing null character if needed. Won't be present if this is used
+ // with raw character array (i.e. not defined as a string).
+ return {s,
+ N - ((std::char_traits<Char>::to_int_type(s[N - 1]) == 0) ? 1 : 0)};
+}
+
+// Converts string_view to basic_string_view.
+template <typename Char>
+FMT_CONSTEXPR basic_string_view<Char> compile_string_to_view(
+ const std_string_view<Char>& s) {
+ return {s.data(), s.size()};
+}
+} // namespace internal
+
+inline namespace literals {
+# if FMT_USE_UDL_TEMPLATE
+# pragma GCC diagnostic push
+# if FMT_CLANG_VERSION
+# pragma GCC diagnostic ignored "-Wgnu-string-literal-operator-template"
+# endif
+template <typename Char, Char... CHARS>
+FMT_CONSTEXPR internal::udl_formatter<Char, CHARS...> operator""_format() {
+ return {};
+}
+# pragma GCC diagnostic pop
+# else
+/**
+ \rst
+ User-defined literal equivalent of :func:`fmt::format`.
+
+ **Example**::
+
+ using namespace fmt::literals;
+ std::string message = "The answer is {}"_format(42);
+ \endrst
+ */
+FMT_CONSTEXPR internal::udl_formatter<char> operator"" _format(const char* s,
+ std::size_t n) {
+ return {{s, n}};
+}
+FMT_CONSTEXPR internal::udl_formatter<wchar_t> operator"" _format(
+ const wchar_t* s, std::size_t n) {
+ return {{s, n}};
+}
+# endif // FMT_USE_UDL_TEMPLATE
+
+/**
+ \rst
+ User-defined literal equivalent of :func:`fmt::arg`.
+
+ **Example**::
+
+ using namespace fmt::literals;
+ fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23);
+ \endrst
+ */
+FMT_CONSTEXPR internal::udl_arg<char> operator"" _a(const char* s,
+ std::size_t n) {
+ return {{s, n}};
+}
+FMT_CONSTEXPR internal::udl_arg<wchar_t> operator"" _a(const wchar_t* s,
+ std::size_t n) {
+ return {{s, n}};
+}
+} // namespace literals
+#endif // FMT_USE_USER_DEFINED_LITERALS
+FMT_END_NAMESPACE
+
+#define FMT_STRING_IMPL(s, ...) \
+ [] { \
+ /* Use a macro-like name to avoid shadowing warnings. */ \
+ struct FMT_COMPILE_STRING : fmt::compile_string { \
+ using char_type = fmt::remove_cvref_t<decltype(s[0])>; \
+ FMT_MAYBE_UNUSED __VA_ARGS__ FMT_CONSTEXPR \
+ operator fmt::basic_string_view<char_type>() const { \
+ return fmt::internal::compile_string_to_view<char_type>(s); \
+ } \
+ }; \
+ return FMT_COMPILE_STRING(); \
+ }()
+
+/**
+ \rst
+ Constructs a compile-time format string from a string literal *s*.
+
+ **Example**::
+
+ // A compile-time error because 'd' is an invalid specifier for strings.
+ std::string s = format(FMT_STRING("{:d}"), "foo");
+ \endrst
+ */
+#define FMT_STRING(s) FMT_STRING_IMPL(s, )
+
+#if defined(FMT_STRING_ALIAS) && FMT_STRING_ALIAS
+# define fmt(s) FMT_STRING_IMPL(s, [[deprecated]])
+#endif
+
+#ifdef FMT_HEADER_ONLY
+# define FMT_FUNC inline
+# include "format-inl.h"
+#else
+# define FMT_FUNC
+#endif
+
+#endif // FMT_FORMAT_H_