fixed handling of (multi line) strings and ';' in strings for .opts files

Fixes GAUDI-1179

See merge request !112

Gaudi/tests/nose/test_gaudi_1179.py

+from subprocess import Popen, PIPE
+import os
+
+def test():
+    'https://its.cern.ch/jira/browse/GAUDI-1179'
+    from os.path import dirname, join
+    from Gaudi.Configuration import importOptions, allConfigurables
+
+    opts = join(dirname(dirname(__file__)), 'pyjobopts', 'GAUDI-1179.opts')
+    importOptions(opts)
+
+    assert 'Dummy' in allConfigurables
+    assert allConfigurables['Dummy'].Value == 'a;b;c'
+    assert allConfigurables['Dummy'].MultiLineValue1 == '1;\n2;\n3\n4\n5'
+    assert allConfigurables['Dummy'].MultiLineValue2 == '\nhi\n'

Gaudi/tests/pyjobopts/GAUDI-1179.opts

+Dummy.Value = "a;b;c";
+
+Dummy.MultiLineValue1 = "1;
+2;
+3
+4
+5";
+
+Dummy.MultiLineValue2 = "
+hi
+";

GaudiKernel/python/GaudiKernel/ProcessJobOptions.py

@@ -161,6 +161,8 @@ class JobOptsParser:
         ifdef_skipping = False
         ifdef_skipping_level = 0
 
+        in_string = False
+
         f = open(_find_file(file))
         l = f.readline()
         if l.startswith("#!"):
@@ -240,6 +242,32 @@ class JobOptsParser:
                     raise ParserError("End Of File reached before end of multi-line comment")
                 l += l1[m.end():]
 
+            # if we are in a multiline string, we add to the statement
+            # everything until the next '"'
+            if in_string:
+                string_end = l.find('"')
+                if string_end >= 0:
+                    statement += l[:string_end+1]
+                    l = l[string_end+1:]
+                    in_string = False # the string ends here
+                else:
+                    statement += l
+                    l = ''
+            else: # check if we have a string
+                string_start = l.find('"')
+                if string_start >= 0:
+                    string_end = l.find('"', string_start + 1)
+                    if string_end >= 0:
+                        # the string is opened and closed
+                        statement += l[:string_end+1]
+                        l = l[string_end+1:]
+                    else:
+                        # the string is only opened
+                        statement += l
+                        in_string = True
+                        l = f.readline()
+                        continue
+
             if self.statement_sep in l:
                 i = l.index(self.statement_sep)
                 statement += l[:i]