The Tor Browser: gfx/harfbuzz/src/hb-unicode.cc@6474c204b198 (annotated)

gfx/harfbuzz/src/hb-unicode.cc@6474c204b198 (annotated)

gfx/harfbuzz/src/hb-unicode.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright © 2009  Red Hat, Inc.
  * Copyright © 2011  Codethink Limited
  * Copyright © 2010,2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
  *
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  *
  * Red Hat Author(s): Behdad Esfahbod
  * Codethink Author(s): Ryan Lortie
  * Google Author(s): Behdad Esfahbod
  */
 #include "hb-private.hh"
 #include "hb-unicode-private.hh"
 /*
  * hb_unicode_funcs_t
  */
 static hb_unicode_combining_class_t
 hb_unicode_combining_class_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 				hb_codepoint_t      unicode   HB_UNUSED,
 				void               *user_data HB_UNUSED)
 {
   return HB_UNICODE_COMBINING_CLASS_NOT_REORDERED;
 }
 static unsigned int
 hb_unicode_eastasian_width_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 				hb_codepoint_t      unicode   HB_UNUSED,
 				void               *user_data HB_UNUSED)
 {
   return 1;
 }
 static hb_unicode_general_category_t
 hb_unicode_general_category_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 				 hb_codepoint_t      unicode   HB_UNUSED,
 				 void               *user_data HB_UNUSED)
 {
   return HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER;
 }
 static hb_codepoint_t
 hb_unicode_mirroring_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 			  hb_codepoint_t      unicode   HB_UNUSED,
 			  void               *user_data HB_UNUSED)
 {
   return unicode;
 }
 static hb_script_t
 hb_unicode_script_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 		       hb_codepoint_t      unicode   HB_UNUSED,
 		       void               *user_data HB_UNUSED)
 {
   return HB_SCRIPT_UNKNOWN;
 }
 static hb_bool_t
 hb_unicode_compose_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 			hb_codepoint_t      a         HB_UNUSED,
 			hb_codepoint_t      b         HB_UNUSED,
 			hb_codepoint_t     *ab        HB_UNUSED,
 			void               *user_data HB_UNUSED)
 {
   return false;
 }
 static hb_bool_t
 hb_unicode_decompose_nil (hb_unicode_funcs_t *ufuncs    HB_UNUSED,
 			  hb_codepoint_t      ab        HB_UNUSED,
 			  hb_codepoint_t     *a         HB_UNUSED,
 			  hb_codepoint_t     *b         HB_UNUSED,
 			  void               *user_data HB_UNUSED)
 {
   return false;
 }
 static unsigned int
 hb_unicode_decompose_compatibility_nil (hb_unicode_funcs_t *ufuncs     HB_UNUSED,
 					hb_codepoint_t      u          HB_UNUSED,
 					hb_codepoint_t     *decomposed HB_UNUSED,
 					void               *user_data  HB_UNUSED)
 {
   return 0;
 }
 #define HB_UNICODE_FUNCS_IMPLEMENT_SET \
   HB_UNICODE_FUNCS_IMPLEMENT (glib) \
   HB_UNICODE_FUNCS_IMPLEMENT (icu) \
   HB_UNICODE_FUNCS_IMPLEMENT (ucdn) \
   HB_UNICODE_FUNCS_IMPLEMENT (nil) \
   /* ^--- Add new callbacks before nil */
 #define hb_nil_get_unicode_funcs hb_unicode_funcs_get_empty
 /* Prototype them all */
 #define HB_UNICODE_FUNCS_IMPLEMENT(set) \
 extern "C" hb_unicode_funcs_t *hb_##set##_get_unicode_funcs (void);
 HB_UNICODE_FUNCS_IMPLEMENT_SET
 #undef HB_UNICODE_FUNCS_IMPLEMENT
 hb_unicode_funcs_t *
 hb_unicode_funcs_get_default (void)
 {
 #define HB_UNICODE_FUNCS_IMPLEMENT(set) \
   return hb_##set##_get_unicode_funcs ();
 #ifdef HAVE_GLIB
   HB_UNICODE_FUNCS_IMPLEMENT(glib)
 #elif 0 && defined(HAVE_ICU)
   HB_UNICODE_FUNCS_IMPLEMENT(icu)
 #elif defined(HAVE_UCDN)
   HB_UNICODE_FUNCS_IMPLEMENT(ucdn)
 #else
 #define HB_UNICODE_FUNCS_NIL 1
   HB_UNICODE_FUNCS_IMPLEMENT(nil)
 #endif
 #undef HB_UNICODE_FUNCS_IMPLEMENT
 }
 #if !defined(HB_NO_UNICODE_FUNCS) && defined(HB_UNICODE_FUNCS_NIL)
 #pragma message("Could not find any Unicode functions implementation, you have to provide your own.")
 #pragma message("To suppress this warnings, define HB_NO_UNICODE_FUNCS.")
 #endif
 /**
  * hb_unicode_funcs_create: (Xconstructor)
  * @parent: (allow-none):
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_unicode_funcs_t *
 hb_unicode_funcs_create (hb_unicode_funcs_t *parent)
 {
   hb_unicode_funcs_t *ufuncs;
   if (!(ufuncs = hb_object_create<hb_unicode_funcs_t> ()))
     return hb_unicode_funcs_get_empty ();
   if (!parent)
     parent = hb_unicode_funcs_get_empty ();
   hb_unicode_funcs_make_immutable (parent);
   ufuncs->parent = hb_unicode_funcs_reference (parent);
   ufuncs->func = parent->func;
   /* We can safely copy user_data from parent since we hold a reference
    * onto it and it's immutable.  We should not copy the destroy notifiers
    * though. */
   ufuncs->user_data = parent->user_data;
   return ufuncs;
 }
 const hb_unicode_funcs_t _hb_unicode_funcs_nil = {
   HB_OBJECT_HEADER_STATIC,
   NULL, /* parent */
   true, /* immutable */
   {
 #define HB_UNICODE_FUNC_IMPLEMENT(name) hb_unicode_##name##_nil,
     HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_UNICODE_FUNC_IMPLEMENT
   }
 };
 /**
  * hb_unicode_funcs_get_empty:
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_unicode_funcs_t *
 hb_unicode_funcs_get_empty (void)
 {
   return const_cast<hb_unicode_funcs_t *> (&_hb_unicode_funcs_nil);
 }
 /**
  * hb_unicode_funcs_reference: (skip)
  * @ufuncs: Unicode functions.
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_unicode_funcs_t *
 hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs)
 {
   return hb_object_reference (ufuncs);
 }
 /**
  * hb_unicode_funcs_destroy: (skip)
  * @ufuncs: Unicode functions.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs)
 {
   if (!hb_object_destroy (ufuncs)) return;
 #define HB_UNICODE_FUNC_IMPLEMENT(name) \
   if (ufuncs->destroy.name) ufuncs->destroy.name (ufuncs->user_data.name);
     HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_UNICODE_FUNC_IMPLEMENT
   hb_unicode_funcs_destroy (ufuncs->parent);
   free (ufuncs);
 }
 /**
  * hb_unicode_funcs_set_user_data: (skip)
  * @ufuncs: Unicode functions.
  * @key:
  * @data:
  * @destroy:
  * @replace:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs,
 			        hb_user_data_key_t *key,
 			        void *              data,
 			        hb_destroy_func_t   destroy,
 				hb_bool_t           replace)
 {
   return hb_object_set_user_data (ufuncs, key, data, destroy, replace);
 }
 /**
  * hb_unicode_funcs_get_user_data: (skip)
  * @ufuncs: Unicode functions.
  * @key:
  *
  *
  *
  * Return value: (transfer none):
  *
  * Since: 1.0
  **/
 void *
 hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs,
 			        hb_user_data_key_t *key)
 {
   return hb_object_get_user_data (ufuncs, key);
 }
 /**
  * hb_unicode_funcs_make_immutable:
  * @ufuncs: Unicode functions.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs)
 {
   if (hb_object_is_inert (ufuncs))
     return;
   ufuncs->immutable = true;
 }
 /**
  * hb_unicode_funcs_is_immutable:
  * @ufuncs: Unicode functions.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs)
 {
   return ufuncs->immutable;
 }
 /**
  * hb_unicode_funcs_get_parent:
  * @ufuncs: Unicode functions.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_unicode_funcs_t *
 hb_unicode_funcs_get_parent (hb_unicode_funcs_t *ufuncs)
 {
   return ufuncs->parent ? ufuncs->parent : hb_unicode_funcs_get_empty ();
 }
 #define HB_UNICODE_FUNC_IMPLEMENT(name)						\
 										\
 void										\
 hb_unicode_funcs_set_##name##_func (hb_unicode_funcs_t		   *ufuncs,	\
 				    hb_unicode_##name##_func_t	    func,	\
 				    void			   *user_data,	\
 				    hb_destroy_func_t		    destroy)	\
 {										\
   if (ufuncs->immutable)							\
     return;									\
 										\
   if (ufuncs->destroy.name)							\
     ufuncs->destroy.name (ufuncs->user_data.name);				\
 										\
   if (func) {									\
     ufuncs->func.name = func;							\
     ufuncs->user_data.name = user_data;						\
     ufuncs->destroy.name = destroy;						\
   } else {									\
     ufuncs->func.name = ufuncs->parent->func.name;				\
     ufuncs->user_data.name = ufuncs->parent->user_data.name;			\
     ufuncs->destroy.name = NULL;						\
   }										\
 }
 HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_UNICODE_FUNC_IMPLEMENT
 #define HB_UNICODE_FUNC_IMPLEMENT(return_type, name)				\
 										\
 return_type									\
 hb_unicode_##name (hb_unicode_funcs_t *ufuncs,					\
 		   hb_codepoint_t      unicode)					\
 {										\
   return ufuncs->name (unicode);						\
 }
 HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS_SIMPLE
 #undef HB_UNICODE_FUNC_IMPLEMENT
 /**
  * hb_unicode_compose:
  * @ufuncs: Unicode functions.
  * @a:
  * @b:
  * @ab: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_unicode_compose (hb_unicode_funcs_t *ufuncs,
 		    hb_codepoint_t      a,
 		    hb_codepoint_t      b,
 		    hb_codepoint_t     *ab)
 {
   return ufuncs->compose (a, b, ab);
 }
 /**
  * hb_unicode_decompose:
  * @ufuncs: Unicode functions.
  * @ab:
  * @a: (out):
  * @b: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_unicode_decompose (hb_unicode_funcs_t *ufuncs,
 		      hb_codepoint_t      ab,
 		      hb_codepoint_t     *a,
 		      hb_codepoint_t     *b)
 {
   return ufuncs->decompose (ab, a, b);
 }
 /**
  * hb_unicode_decompose_compatibility:
  * @ufuncs: Unicode functions.
  * @u:
  * @decomposed: (out):
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 unsigned int
 hb_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs,
 				    hb_codepoint_t      u,
 				    hb_codepoint_t     *decomposed)
 {
   return ufuncs->decompose_compatibility (u, decomposed);
 }
 /* See hb-unicode-private.hh for details. */
 const uint8_t
 _hb_modified_combining_class[256] =
 {
 , /* HB_UNICODE_COMBINING_CLASS_NOT_REORDERED */
 , /* HB_UNICODE_COMBINING_CLASS_OVERLAY */
 , 3, 4, 5, 6,
 , /* HB_UNICODE_COMBINING_CLASS_NUKTA */
 , /* HB_UNICODE_COMBINING_CLASS_KANA_VOICING */
 , /* HB_UNICODE_COMBINING_CLASS_VIRAMA */
   /* Hebrew */
   HB_MODIFIED_COMBINING_CLASS_CCC10,
   HB_MODIFIED_COMBINING_CLASS_CCC11,
   HB_MODIFIED_COMBINING_CLASS_CCC12,
   HB_MODIFIED_COMBINING_CLASS_CCC13,
   HB_MODIFIED_COMBINING_CLASS_CCC14,
   HB_MODIFIED_COMBINING_CLASS_CCC15,
   HB_MODIFIED_COMBINING_CLASS_CCC16,
   HB_MODIFIED_COMBINING_CLASS_CCC17,
   HB_MODIFIED_COMBINING_CLASS_CCC18,
   HB_MODIFIED_COMBINING_CLASS_CCC19,
   HB_MODIFIED_COMBINING_CLASS_CCC20,
   HB_MODIFIED_COMBINING_CLASS_CCC21,
   HB_MODIFIED_COMBINING_CLASS_CCC22,
   HB_MODIFIED_COMBINING_CLASS_CCC23,
   HB_MODIFIED_COMBINING_CLASS_CCC24,
   HB_MODIFIED_COMBINING_CLASS_CCC25,
   HB_MODIFIED_COMBINING_CLASS_CCC26,
   /* Arabic */
   HB_MODIFIED_COMBINING_CLASS_CCC27,
   HB_MODIFIED_COMBINING_CLASS_CCC28,
   HB_MODIFIED_COMBINING_CLASS_CCC29,
   HB_MODIFIED_COMBINING_CLASS_CCC30,
   HB_MODIFIED_COMBINING_CLASS_CCC31,
   HB_MODIFIED_COMBINING_CLASS_CCC32,
   HB_MODIFIED_COMBINING_CLASS_CCC33,
   HB_MODIFIED_COMBINING_CLASS_CCC34,
   HB_MODIFIED_COMBINING_CLASS_CCC35,
   /* Syriac */
   HB_MODIFIED_COMBINING_CLASS_CCC36,
 , 38, 39,
 , 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
 , 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
 , 81, 82, 83,
   /* Telugu */
   HB_MODIFIED_COMBINING_CLASS_CCC84,
 , 86, 87, 88, 89, 90,
   HB_MODIFIED_COMBINING_CLASS_CCC91,
 , 93, 94, 95, 96, 97, 98, 99, 100, 101, 102,
   /* Thai */
   HB_MODIFIED_COMBINING_CLASS_CCC103,
 , 105, 106,
   HB_MODIFIED_COMBINING_CLASS_CCC107,
 , 109, 110, 111, 112, 113, 114, 115, 116, 117,
   /* Lao */
   HB_MODIFIED_COMBINING_CLASS_CCC118,
 , 120, 121,
   HB_MODIFIED_COMBINING_CLASS_CCC122,
 , 124, 125, 126, 127, 128,
   /* Tibetan */
   HB_MODIFIED_COMBINING_CLASS_CCC129,
   HB_MODIFIED_COMBINING_CLASS_CCC130,
 ,
   HB_MODIFIED_COMBINING_CLASS_CCC132,
 , 134, 135, 136, 137, 138, 139,
 , 141, 142, 143, 144, 145, 146, 147, 148, 149,
 , 151, 152, 153, 154, 155, 156, 157, 158, 159,
 , 161, 162, 163, 164, 165, 166, 167, 168, 169,
 , 171, 172, 173, 174, 175, 176, 177, 178, 179,
 , 181, 182, 183, 184, 185, 186, 187, 188, 189,
 , 191, 192, 193, 194, 195, 196, 197, 198, 199,
 , /* HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW */
 , 204, 205, 206, 207, 208, 209, 210, 211, 212, 213,
 , /* HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_BELOW_LEFT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_BELOW */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_LEFT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_RIGHT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_ABOVE */
 ,
 , /* HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT */
 , /* HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW */
 , /* HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE */
 , 236, 237, 238, 239,
 , /* HB_UNICODE_COMBINING_CLASS_IOTA_SUBSCRIPT */
 , 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254,
 , /* HB_UNICODE_COMBINING_CLASS_INVALID */
 };

The Tor Browser / annotate

gfx/harfbuzz/src/hb-unicode.cc@6474c204b198 (annotated)

gfx/harfbuzz/src/hb-unicode.cc