Work around g-ir-scanner problem with Gdk.Rectangle

g-ir-scanner is currently buggy and confuses the Gdk.Rectangle alias
with MetaRectangle. Since this is moderately hard to fix in
gobject-introspection and the fix would conflict with in-progress
changes, work around by doing a 'sed job' on the generated Meta.gir.

https://bugzilla.gnome.org/show_bug.cgi?id=623639

configure.in

@@ -534,6 +534,9 @@ if test "x$GCC" = "xyes"; then
   CFLAGS="$CFLAGS -Wall -Werror -ansi"
 fi
 
+# For fix-meta-rectangle.py
+AM_PATH_PYTHON([2.5])
+
 # Use gnome-doc-utils:
 GNOME_DOC_INIT([0.8.0])
 

src/Makefile.am

@@ -223,7 +223,10 @@ Meta-$(api_version).gir: $(G_IR_SCANNER) mutter $(libmutterinclude_HEADERS) $(mu
 		$(filter %.c,$(mutter_SOURCES))		\
 		$(libmutterinclude_base_headers)	\
 		$(INCLUDES)				\
-		-o $$pwd/$@
+		-o $$pwd/$@.tmp &&			\
+	$(PYTHON) $(srcdir)/fix-meta-rectangle.py $$pwd/$@.tmp $$pwd/$@.tmp2 &&	\
+	rm $$pwd/$@.tmp &&							\
+	mv $$pwd/$@.tmp2 $$pwd/$@
 
 Meta-$(api_version).typelib: $(G_IR_COMPILER) Meta-$(api_version).gir
 	$(AM_V_GEN) LD_LIBRARY_PATH=$${LD_LIBRARY_PATH:+$$LD_LIBRARY_PATH:}. $(G_IR_COMPILER) Meta-$(api_version).gir -o $@
@@ -300,6 +303,7 @@ EXTRA_DIST=$(desktopfiles_files) 	\
 	$(desktopfiles_in_files)	\
 	$(wmproperties_in_files)	\
 	$(schema_in_files)		\
+	fix-meta-rectangle.py		\
 	libmutter-private.pc.in	\
 	mutter-plugins.pc.in  \
 	mutter-enum-types.h.in \

src/fix-meta-rectangle.py

@@ -0,0 +1,21 @@
+#!/usr/bin/python
+import re
+import sys
+
+# gobject-introspection currently has a bug where an alias like
+# 'typedef GdkRectangle cairo_rect_int_t' is stored un-namespaced,
+# so it is taken to apply to all *Rectangle types. Fixing this
+# requires a significant rework of g-ir-scanner, so for the moment
+# we fix up the output using this script.
+#
+# https://bugzilla.gnome.org/show_bug.cgi?id=622609
+
+GDK_RECTANGLE = re.compile(r'Gdk\.Rectangle')
+META_RECTANGLE = re.compile(r'MetaRectangle')
+
+i = open(sys.argv[1], 'r')
+o = open(sys.argv[2], 'w')
+for line in i:
+    if GDK_RECTANGLE.search(line) and META_RECTANGLE.search(line):
+        line = re.sub('Gdk.Rectangle', 'Rectangle', line)
+    o.write(line)