[Python-checkins] CVS: python/dist/src/Lib ConfigParser.py,1.18,1.19

[Eric S. Raymond]

Update of /cvsroot/python/python/dist/src/Lib
In directory slayer.i.sourceforge.net:/tmp/cvs-serv18589/dist/src/Lib

Modified Files:
	ConfigParser.py 
Log Message:
Give ConfigParser the capability to set as well as read options, and to write
a representation of the configuration state in .ini format that can be read
back in by a future read() call.  Thus this class is now a back end
for .ini editors as well as parsers.

This patch is complete and tested, but exposes a bug in the ConfigParser
implementation which I have not yet fixed.  Because case information is 
discarded during parsing, the output of write() has its case smashed.

I wrote this for a SourceForge interface script called forgetool.
Documentation for the new entry points included.


Index: ConfigParser.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/ConfigParser.py,v
retrieving revision 1.18
retrieving revision 1.19
diff -C2 -r1.18 -r1.19
*** ConfigParser.py	2000/05/09 14:46:40	1.18
--- ConfigParser.py	2000/07/10 18:11:00	1.19
***************
*** 287,290 ****
--- 287,326 ----
          return string.lower(optionstr)
  
+     def has_option(self, section, option):
+         """Check for the existence of a given option in a given section."""
+         if not section or section == "DEFAULT":
+             return self.__defaults.has_key(option)
+         elif not self.has_section(section):
+             return 0
+         else:
+             return self.__sections[section].has_key(option)
+ 
+     def set(self, section, option, value):
+         """Set an option."""
+         if not section or section == "DEFAULT":
+             sectdict = self.__defaults
+         else:
+             try:
+                 sectdict = self.__sections[section]
+             except KeyError:
+                 raise NoSectionError(section)
+         sectdict[option] = value
+ 
+     def write(self, fp):
+         """Write an .ini-format representation of the configuration state."""
+         if self.__defaults:
+             fp.write("[DEFAULT]\n")
+             for key in self.__defaults.keys():
+                 fp.write(key + " = " + self.__defaults[key] + "\n")
+             fp.write("\n")
+         for section in self.sections():
+             fp.write("[" + section + "]\n")
+             sectdict = self.__sections[section]
+             for key in sectdict.keys():
+                 if key == "__name__":
+                     continue
+                 fp.write(key + " = " + str(sectdict[key]) + "\n")
+             fp.write("\n")
+ 
      #
      # Regular expressions for parsing section headers and options.  Note a