Bug 21907: Fix runtime error on CentOS 6

In Mozilla bug 1324780, support for building with glib 2.28 (the version
available in CentOS 6) was added. However we are building on Debian
Wheezy which has glib 2.32. We fix that by backing out all glib > 2.28
code paths.

gfx/harfbuzz/src/hb-glib.cc

@@ -49,7 +49,6 @@
  **/
 
 
-#if !GLIB_CHECK_VERSION(2,29,14)
 static const hb_script_t
 glib_script_to_script[] =
 {
@@ -171,7 +170,6 @@ glib_script_to_script[] =
   HB_SCRIPT_SORA_SOMPENG,
   HB_SCRIPT_TAKRI
 };
-#endif
 
 /**
  * hb_glib_script_to_script:
@@ -187,9 +185,6 @@ glib_script_to_script[] =
 hb_script_t
 hb_glib_script_to_script (GUnicodeScript script)
 {
-#if GLIB_CHECK_VERSION(2,29,14)
-  return (hb_script_t) g_unicode_script_to_iso15924 (script);
-#else
   if (likely ((unsigned int) script < ARRAY_LENGTH (glib_script_to_script)))
     return glib_script_to_script[script];
 
@@ -197,7 +192,6 @@ hb_glib_script_to_script (GUnicodeScript script)
     return HB_SCRIPT_INVALID;
 
   return HB_SCRIPT_UNKNOWN;
-#endif
 }
 
 /**
@@ -214,9 +208,6 @@ hb_glib_script_to_script (GUnicodeScript script)
 GUnicodeScript
 hb_glib_script_from_script (hb_script_t script)
 {
-#if GLIB_CHECK_VERSION(2,29,14)
-  return g_unicode_script_from_iso15924 (script);
-#else
   unsigned int count = ARRAY_LENGTH (glib_script_to_script);
   for (unsigned int i = 0; i < count; i++)
     if (glib_script_to_script[i] == script)
@@ -226,7 +217,6 @@ hb_glib_script_from_script (hb_script_t script)
     return G_UNICODE_SCRIPT_INVALID_CODE;
 
   return G_UNICODE_SCRIPT_UNKNOWN;
-#endif
 }
 
 
@@ -273,10 +263,6 @@ hb_glib_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED,
 			 hb_codepoint_t     *ab,
 			 void               *user_data HB_UNUSED)
 {
-#if GLIB_CHECK_VERSION(2,29,12)
-  return g_unichar_compose (a, b, ab);
-#endif
-
   /* We don't ifdef-out the fallback code such that compiler always
    * sees it and makes sure it's compilable. */
 
@@ -310,10 +296,6 @@ hb_glib_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED,
 			   hb_codepoint_t     *b,
 			   void               *user_data HB_UNUSED)
 {
-#if GLIB_CHECK_VERSION(2,29,12)
-  return g_unichar_decompose (ab, a, b);
-#endif
-
   /* We don't ifdef-out the fallback code such that compiler always
    * sees it and makes sure it's compilable. */
 
@@ -415,39 +397,4 @@ hb_glib_get_unicode_funcs ()
   return static_glib_funcs.get_unconst ();
 }
 
-
-
-#if GLIB_CHECK_VERSION(2,31,10)
-
-static void
-_hb_g_bytes_unref (void *data)
-{
-  g_bytes_unref ((GBytes *) data);
-}
-
-/**
- * hb_glib_blob_create:
- * @gbytes: the GBytes structure to work upon
- *
- * Creates an #hb_blob_t blob from the specified
- * GBytes data structure.
- *
- * Return value: (transfer full): the new #hb_blob_t blob object
- *
- * Since: 0.9.38
- **/
-hb_blob_t *
-hb_glib_blob_create (GBytes *gbytes)
-{
-  gsize size = 0;
-  gconstpointer data = g_bytes_get_data (gbytes, &size);
-  return hb_blob_create ((const char *) data,
-			 size,
-			 HB_MEMORY_MODE_READONLY,
-			 g_bytes_ref (gbytes),
-			 _hb_g_bytes_unref);
-}
-#endif
-
-
 #endif

gfx/harfbuzz/src/hb-glib.h

@@ -46,11 +46,6 @@ hb_glib_script_from_script (hb_script_t script);
 HB_EXTERN hb_unicode_funcs_t *
 hb_glib_get_unicode_funcs (void);
 
-#if GLIB_CHECK_VERSION(2,31,10)
-HB_EXTERN hb_blob_t *
-hb_glib_blob_create (GBytes *gbytes);
-#endif
-
 HB_END_DECLS
 
 #endif /* HB_GLIB_H */