2007-04-25  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpparamspecs.[ch] (struct GimpParamSpecString)
	(gimp_param_spec_string): added "gboolean non_empty" to require
	the string being non-empty. Changed validation accordingly.
	Also fixed validation for static strings (we were happily
	freeing and modifying them before).

	* app/xcf/xcf.c: filenames should be non-empty.
	* app/pdb/gimp-pdb-compat.c: compat strings shouldn't.

	* tools/pdbgen/app.pl: add support for $arg->{non_empty} and
	changed generation of calls to gimp_param_spec_string().

	* tools/pdbgen/pdb/brush_select.pdb
	* tools/pdbgen/pdb/edit.pdb
	* tools/pdbgen/pdb/vectors.pdb
	* tools/pdbgen/pdb/plug_in.pdb
	* tools/pdbgen/pdb/gradient.pdb
	* tools/pdbgen/pdb/palette_select.pdb
	* tools/pdbgen/pdb/palette.pdb
	* tools/pdbgen/pdb/fileops.pdb
	* tools/pdbgen/pdb/progress.pdb
	* tools/pdbgen/pdb/procedural_db.pdb
	* tools/pdbgen/pdb/font_select.pdb
	* tools/pdbgen/pdb/pattern_select.pdb
	* tools/pdbgen/pdb/unit.pdb
	* tools/pdbgen/pdb/brush.pdb
	* tools/pdbgen/pdb/gradient_select.pdb
	* tools/pdbgen/pdb/buffer.pdb: require non-empty strings for data
	object names, procedure names, unit strings, PDB data identifiers
	and buffer names. Removed some manual strlen() checks, all other
	places just got better error reporting for free (proper validation
	error instead of unspecific execution error).

	* app/pdb/*_cmds.c: regenerated.


svn path=/trunk/; revision=22329