The Tor Browser: gfx/harfbuzz/src/hb-face.cc@925c144e1f1f (annotated)

gfx/harfbuzz/src/hb-face.cc@925c144e1f1f (annotated)

gfx/harfbuzz/src/hb-face.cc

Fri, 16 Jan 2015 18:13:44 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Fri, 16 Jan 2015 18:13:44 +0100
branch: TOR_BUG_9701
changeset 14: 925c144e1f1f
permissions: -rw-r--r--

Integrate suggestion from review to improve consistency with existing code.

 /*
  * Copyright © 2009  Red Hat, Inc.
  * Copyright © 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
  * Google Author(s): Behdad Esfahbod
  */
 #include "hb-private.hh"
 #include "hb-ot-layout-private.hh"
 #include "hb-font-private.hh"
 #include "hb-open-file-private.hh"
 #include "hb-ot-head-table.hh"
 #include "hb-ot-maxp-table.hh"
 #include "hb-cache-private.hh"
 #include <string.h>
 /*
  * hb_face_t
  */
 const hb_face_t _hb_face_nil = {
   HB_OBJECT_HEADER_STATIC,
   true, /* immutable */
   NULL, /* reference_table_func */
   NULL, /* user_data */
   NULL, /* destroy */
 ,    /* index */
 , /* upem */
 ,    /* num_glyphs */
   {
 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_INVALID,
 #include "hb-shaper-list.hh"
 #undef HB_SHAPER_IMPLEMENT
   },
   NULL, /* shape_plans */
 };
 /**
  * hb_face_create_for_tables:
  * @reference_table_func: (closure user_data) (destroy destroy) (scope notified):
  * @user_data:
  * @destroy:
  *
  *
  *
  * Return value: (transfer full)
  *
  * Since: 1.0
  **/
 hb_face_t *
 hb_face_create_for_tables (hb_reference_table_func_t  reference_table_func,
 			   void                      *user_data,
 			   hb_destroy_func_t          destroy)
 {
   hb_face_t *face;
   if (!reference_table_func || !(face = hb_object_create<hb_face_t> ())) {
     if (destroy)
       destroy (user_data);
     return hb_face_get_empty ();
   }
   face->reference_table_func = reference_table_func;
   face->user_data = user_data;
   face->destroy = destroy;
   face->upem = 0;
   face->num_glyphs = (unsigned int) -1;
   return face;
 }
 typedef struct hb_face_for_data_closure_t {
   hb_blob_t *blob;
   unsigned int  index;
 } hb_face_for_data_closure_t;
 static hb_face_for_data_closure_t *
 _hb_face_for_data_closure_create (hb_blob_t *blob, unsigned int index)
 {
   hb_face_for_data_closure_t *closure;
   closure = (hb_face_for_data_closure_t *) malloc (sizeof (hb_face_for_data_closure_t));
   if (unlikely (!closure))
     return NULL;
   closure->blob = blob;
   closure->index = index;
   return closure;
 }
 static void
 _hb_face_for_data_closure_destroy (hb_face_for_data_closure_t *closure)
 {
   hb_blob_destroy (closure->blob);
   free (closure);
 }
 static hb_blob_t *
 _hb_face_for_data_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
 {
   hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) user_data;
   if (tag == HB_TAG_NONE)
     return hb_blob_reference (data->blob);
   const OT::OpenTypeFontFile &ot_file = *OT::Sanitizer<OT::OpenTypeFontFile>::lock_instance (data->blob);
   const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index);
   const OT::OpenTypeTable &table = ot_face.get_table_by_tag (tag);
   hb_blob_t *blob = hb_blob_create_sub_blob (data->blob, table.offset, table.length);
   return blob;
 }
 /**
  * hb_face_create: (Xconstructor)
  * @blob:
  * @index:
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_face_t *
 hb_face_create (hb_blob_t    *blob,
 		unsigned int  index)
 {
   hb_face_t *face;
   if (unlikely (!blob || !hb_blob_get_length (blob)))
     return hb_face_get_empty ();
   hb_face_for_data_closure_t *closure = _hb_face_for_data_closure_create (OT::Sanitizer<OT::OpenTypeFontFile>::sanitize (hb_blob_reference (blob)), index);
   if (unlikely (!closure))
     return hb_face_get_empty ();
   face = hb_face_create_for_tables (_hb_face_for_data_reference_table,
 				    closure,
 				    (hb_destroy_func_t) _hb_face_for_data_closure_destroy);
   hb_face_set_index (face, index);
   return face;
 }
 /**
  * hb_face_get_empty:
  *
  *
  *
  * Return value: (transfer full)
  *
  * Since: 1.0
  **/
 hb_face_t *
 hb_face_get_empty (void)
 {
   return const_cast<hb_face_t *> (&_hb_face_nil);
 }
 /**
  * hb_face_reference: (skip)
  * @face: a face.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_face_t *
 hb_face_reference (hb_face_t *face)
 {
   return hb_object_reference (face);
 }
 /**
  * hb_face_destroy: (skip)
  * @face: a face.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_face_destroy (hb_face_t *face)
 {
   if (!hb_object_destroy (face)) return;
   for (hb_face_t::plan_node_t *node = face->shape_plans; node; )
   {
     hb_face_t::plan_node_t *next = node->next;
     hb_shape_plan_destroy (node->shape_plan);
     free (node);
     node = next;
   }
 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, face);
 #include "hb-shaper-list.hh"
 #undef HB_SHAPER_IMPLEMENT
   if (face->destroy)
     face->destroy (face->user_data);
   free (face);
 }
 /**
  * hb_face_set_user_data: (skip)
  * @face: a face.
  * @key:
  * @data:
  * @destroy:
  * @replace:
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_face_set_user_data (hb_face_t          *face,
 		       hb_user_data_key_t *key,
 		       void *              data,
 		       hb_destroy_func_t   destroy,
 		       hb_bool_t           replace)
 {
   return hb_object_set_user_data (face, key, data, destroy, replace);
 }
 /**
  * hb_face_get_user_data: (skip)
  * @face: a face.
  * @key:
  *
  *
  *
  * Return value: (transfer none):
  *
  * Since: 1.0
  **/
 void *
 hb_face_get_user_data (hb_face_t          *face,
 		       hb_user_data_key_t *key)
 {
   return hb_object_get_user_data (face, key);
 }
 /**
  * hb_face_make_immutable:
  * @face: a face.
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_face_make_immutable (hb_face_t *face)
 {
   if (hb_object_is_inert (face))
     return;
   face->immutable = true;
 }
 /**
  * hb_face_is_immutable:
  * @face: a face.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 hb_bool_t
 hb_face_is_immutable (hb_face_t *face)
 {
   return face->immutable;
 }
 /**
  * hb_face_reference_table:
  * @face: a face.
  * @tag:
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_blob_t *
 hb_face_reference_table (hb_face_t *face,
 			 hb_tag_t   tag)
 {
   return face->reference_table (tag);
 }
 /**
  * hb_face_reference_blob:
  * @face: a face.
  *
  *
  *
  * Return value: (transfer full):
  *
  * Since: 1.0
  **/
 hb_blob_t *
 hb_face_reference_blob (hb_face_t *face)
 {
   return face->reference_table (HB_TAG_NONE);
 }
 /**
  * hb_face_set_index:
  * @face: a face.
  * @index:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_face_set_index (hb_face_t    *face,
 		   unsigned int  index)
 {
   if (hb_object_is_inert (face))
     return;
   face->index = index;
 }
 /**
  * hb_face_get_index:
  * @face: a face.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 unsigned int
 hb_face_get_index (hb_face_t    *face)
 {
   return face->index;
 }
 /**
  * hb_face_set_upem:
  * @face: a face.
  * @upem:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_face_set_upem (hb_face_t    *face,
 		  unsigned int  upem)
 {
   if (hb_object_is_inert (face))
     return;
   face->upem = upem;
 }
 /**
  * hb_face_get_upem:
  * @face: a face.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 unsigned int
 hb_face_get_upem (hb_face_t *face)
 {
   return face->get_upem ();
 }
 void
 hb_face_t::load_upem (void) const
 {
   hb_blob_t *head_blob = OT::Sanitizer<OT::head>::sanitize (reference_table (HB_OT_TAG_head));
   const OT::head *head_table = OT::Sanitizer<OT::head>::lock_instance (head_blob);
   upem = head_table->get_upem ();
   hb_blob_destroy (head_blob);
 }
 /**
  * hb_face_set_glyph_count:
  * @face: a face.
  * @glyph_count:
  *
  *
  *
  * Since: 1.0
  **/
 void
 hb_face_set_glyph_count (hb_face_t    *face,
 			 unsigned int  glyph_count)
 {
   if (hb_object_is_inert (face))
     return;
   face->num_glyphs = glyph_count;
 }
 /**
  * hb_face_get_glyph_count:
  * @face: a face.
  *
  *
  *
  * Return value:
  *
  * Since: 1.0
  **/
 unsigned int
 hb_face_get_glyph_count (hb_face_t *face)
 {
   return face->get_num_glyphs ();
 }
 void
 hb_face_t::load_num_glyphs (void) const
 {
   hb_blob_t *maxp_blob = OT::Sanitizer<OT::maxp>::sanitize (reference_table (HB_OT_TAG_maxp));
   const OT::maxp *maxp_table = OT::Sanitizer<OT::maxp>::lock_instance (maxp_blob);
   num_glyphs = maxp_table->get_num_glyphs ();
   hb_blob_destroy (maxp_blob);
 }

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gfx/harfbuzz/src/hb-face.cc@925c144e1f1f (annotated)

gfx/harfbuzz/src/hb-face.cc