2001-10-14 Hans Breuer <hans@breuer.org>

2001-10-14  Hans Breuer  <hans@breuer.org>

	* lib/charconv.c : g_locale_to_utf8() does not handle NULL
	strings. Use g_strdup() for these.

	libxml2 does not produce 'any extra indentation when saving a tree'
	[libxml2-2.4.2/doc/upgrade.html] anymore, which was the default with
	libxml(1). To get human readable XML some extra tweaking is required.
	It is enabled by setting 'pretty_formated_xml' to 'true' in 'diarc'.
	* lib/dia_xml.[hc] : provide and use 'DIAVAR pretty_formated_xml'
	* app/preferences.[ch] : initialize 'pretty_formated_xml'

	* lib/libdia.def : updated externals

	* lib/properties.h : add prototype for prop_list_from_single ()

	* plug-ins/makefile.msc : build metapost plug-in

	* plug-ins/metapost/render_metapost.c : msvc does not like
	switch labels without operation 'default: }'. Added a noop.

	* plug-ins/python/pydia-text.[hc] : (new files) wrap DiaText
	* plug-ins/python/diamodule.c : added PyDiaText
	* plug-ins/python/makefile.msc : dito. Also added LIBXML_CFLAGS.
	Although the python plug-in does not use libxml at all, the
	headers are required to use the lib/prop*.h headers

	* plug-ins/python/pydia-diagramdata.c : added wrappers for
	update_extents and get_sorted_selected (should I duplicate
	more functions from PyDiaDiagram or should they be moved?)

	* plug-ins/python/pydia-properties.c : allow to set (some) properties
	through the dictionary api
	* plug-ins/python/pydia-property.h : declare PyDiaProperty_ApplyToObject
	* plug-ins/python/pydia-property.c : implement it (currently only
	string properties can be set)

	Reimplement PyDiaProperty_GetAttr by means of the new StdProp api.
	Quoting myself: 'Still not convinced that this is better than an
	 integral property->type and some casting ...
	 It is trading a straightforward 40 lines switch statement to
	 this nice 'type safe' function mapping (about 125 lines)'
	(But now it works again, better than changing the News file :)