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@ -1,15 +1,34 @@ |
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/***************************************************************************/ |
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/* */ |
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/* t1cmap.c */ |
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/* */ |
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/* Type 1 character map support (body). */ |
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/* */ |
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/* Copyright 2002 by */ |
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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/* */ |
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/* This file is part of the FreeType project, and may only be used, */ |
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/* modified, and distributed under the terms of the FreeType project */ |
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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/* this file you indicate that you have read the license and */ |
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/* understand and accept it fully. */ |
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/* */ |
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/***************************************************************************/ |
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#include "t1cmap.h" |
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#include <stdlib.h> |
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#include <stdlib.h> /* for qsort() */ |
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#include FT_INTERNAL_DEBUG_H |
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/***************************************************************************/ |
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/***************************************************************************/ |
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/***** *****/ |
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/***** TYPE1 STANDARD (AND EXPERT) ENCODING CMAPS *****/ |
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/***** *****/ |
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/***************************************************************************/ |
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/***************************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/***** *****/ |
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/***** TYPE1 STANDARD (AND EXPERT) ENCODING CMAPS *****/ |
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/***** *****/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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static void |
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t1_cmap_std_init( T1_CMapStd cmap, |
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@ -18,6 +37,7 @@ |
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T1_Face face = (T1_Face)FT_CMAP_FACE( cmap ); |
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PSNames_Service psnames = (PSNames_Service)face->psnames; |
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cmap->num_glyphs = face->type1.num_glyphs; |
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cmap->glyph_names = (const char* const*)face->type1.glyph_names; |
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cmap->sid_to_string = psnames->adobe_std_strings; |
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@ -39,18 +59,20 @@ |
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FT_CALLBACK_DEF( FT_UInt ) |
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t1_cmap_std_char_index( T1_CMapStd cmap, |
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FT_UInt32 char_code ) |
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t1_cmap_std_char_index( T1_CMapStd cmap, |
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FT_UInt32 char_code ) |
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{ |
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FT_UInt result = 0; |
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if ( char_code < 256 ) |
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{ |
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FT_UInt code, n; |
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const char* glyph_name; |
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/* conver character code to Adobe SID string */ |
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code = cmap->code_to_sid[ char_code ]; |
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/* convert character code to Adobe SID string */ |
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code = cmap->code_to_sid[char_code]; |
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glyph_name = cmap->sid_to_string( code ); |
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/* look for the corresponding glyph name */ |
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@ -58,6 +80,7 @@ |
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{ |
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const char* gname = cmap->glyph_names[n]; |
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if ( gname && gname[0] == glyph_name[0] && |
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strcmp( gname, glyph_name ) == 0 ) |
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{ |
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@ -66,6 +89,7 @@ |
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} |
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} |
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} |
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return result; |
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} |
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@ -74,8 +98,9 @@ |
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t1_cmap_std_char_next( T1_CMapStd cmap, |
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FT_UInt32 *pchar_code ) |
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{ |
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FT_UInt result = 0; |
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FT_UInt32 char_code = *pchar_code + 1; |
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FT_UInt result = 0; |
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FT_UInt32 char_code = *pchar_code + 1; |
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while ( char_code < 256 ) |
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{ |
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@ -104,17 +129,15 @@ |
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FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
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t1_cmap_standard_class_rec = |
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{ |
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sizeof( T1_CMapStdRec ), |
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sizeof ( T1_CMapStdRec ), |
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(FT_CMap_InitFunc) t1_cmap_standard_init, |
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(FT_CMap_DoneFunc) t1_cmap_std_done, |
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(FT_CMap_CharIndexFunc) t1_cmap_std_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_std_char_next |
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(FT_CMap_InitFunc) t1_cmap_standard_init, |
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(FT_CMap_DoneFunc) t1_cmap_std_done, |
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(FT_CMap_CharIndexFunc)t1_cmap_std_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_std_char_next |
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}; |
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FT_CALLBACK_DEF( FT_Error ) |
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t1_cmap_expert_init( T1_CMapStd cmap ) |
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{ |
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@ -125,34 +148,33 @@ |
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FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
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t1_cmap_expert_class_rec = |
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{ |
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sizeof( T1_CMapStdRec ), |
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sizeof ( T1_CMapStdRec ), |
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(FT_CMap_InitFunc) t1_cmap_expert_init, |
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(FT_CMap_DoneFunc) t1_cmap_std_done, |
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(FT_CMap_CharIndexFunc) t1_cmap_std_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_std_char_next |
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(FT_CMap_InitFunc) t1_cmap_expert_init, |
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(FT_CMap_DoneFunc) t1_cmap_std_done, |
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(FT_CMap_CharIndexFunc)t1_cmap_std_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_std_char_next |
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}; |
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/***************************************************************************/ |
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/***************************************************************************/ |
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/***** *****/ |
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/***** TYPE1 CUSTOM ENCODING CMAP *****/ |
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/***** *****/ |
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/***************************************************************************/ |
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/***************************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/***** *****/ |
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/***** TYPE1 CUSTOM ENCODING CMAP *****/ |
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/***** *****/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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FT_CALLBACK_DEF( FT_Error ) |
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t1_cmap_custom_init( T1_CMapCustom cmap ) |
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{ |
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T1_Face face = (T1_Face) FT_CMAP_FACE(cmap); |
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T1_Face face = (T1_Face)FT_CMAP_FACE( cmap ); |
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T1_Encoding encoding = &face->type1.encoding; |
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cmap->first = encoding->code_first; |
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cmap->count = (FT_UInt)(encoding->code_last - cmap->first + 1); |
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cmap->count = (FT_UInt)( encoding->code_last - cmap->first + 1 ); |
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cmap->indices = encoding->char_index; |
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FT_ASSERT( cmap->indices != NULL ); |
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@ -176,11 +198,12 @@ |
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FT_UInt32 char_code ) |
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{ |
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FT_UInt result = 0; |
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FT_UInt32 index; |
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FT_UInt32 idx; |
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index = (FT_UInt32)( char_code - cmap->first ); |
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if ( index < cmap->count ) |
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result = cmap->indices[ index ]; |
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idx = (FT_UInt32)( char_code - cmap->first ); |
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if ( idx < cmap->count ) |
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result = cmap->indices[idx]; |
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return result; |
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} |
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@ -190,19 +213,20 @@ |
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t1_cmap_custom_char_next( T1_CMapCustom cmap, |
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FT_UInt32 *pchar_code ) |
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{ |
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FT_UInt result = 0; |
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FT_UInt32 char_code = *pchar_code; |
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FT_UInt32 index; |
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FT_UInt result = 0; |
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FT_UInt32 char_code = *pchar_code; |
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FT_UInt32 idx; |
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++char_code; |
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if ( char_code < cmap->first ) |
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char_code = cmap->first; |
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index = (FT_UInt32)( char_code - cmap->first ); |
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for ( ; index < cmap->count; index++, char_code++ ) |
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idx = (FT_UInt32)( char_code - cmap->first ); |
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for ( ; idx < cmap->count; idx++, char_code++ ) |
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{ |
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result = cmap->indices[index]; |
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result = cmap->indices[idx]; |
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if ( result != 0 ) |
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goto Exit; |
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} |
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@ -218,23 +242,22 @@ |
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FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
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t1_cmap_custom_class_rec = |
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{ |
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sizeof( T1_CMapCustomRec ), |
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(FT_CMap_InitFunc) t1_cmap_custom_init, |
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(FT_CMap_DoneFunc) t1_cmap_custom_done, |
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(FT_CMap_CharIndexFunc) t1_cmap_custom_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_custom_char_next |
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}; |
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sizeof ( T1_CMapCustomRec ), |
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(FT_CMap_InitFunc) t1_cmap_custom_init, |
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(FT_CMap_DoneFunc) t1_cmap_custom_done, |
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(FT_CMap_CharIndexFunc)t1_cmap_custom_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_custom_char_next |
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}; |
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/***************************************************************************/ |
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/***************************************************************************/ |
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/***** *****/ |
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/***** TYPE1 SYNTHETIC UNICODE ENCODING CMAP *****/ |
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/***** *****/ |
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/***************************************************************************/ |
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/***************************************************************************/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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/***** *****/ |
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/***** TYPE1 SYNTHETIC UNICODE ENCODING CMAP *****/ |
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/***** *****/ |
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/*************************************************************************/ |
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/*************************************************************************/ |
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FT_CALLBACK_DEF( FT_Int ) |
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t1_cmap_uni_pair_compare( const void* pair1, |
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@ -243,6 +266,7 @@ |
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FT_UInt32 u1 = ((T1_CMapUniPair)pair1)->unicode; |
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FT_UInt32 u2 = ((T1_CMapUniPair)pair2)->unicode; |
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if ( u1 < u2 ) |
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return -1; |
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@ -253,7 +277,6 @@ |
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}
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FT_CALLBACK_DEF( FT_Error ) |
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t1_cmap_unicode_init( T1_CMapUnicode cmap ) |
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{ |
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@ -281,6 +304,7 @@ |
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{ |
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const char* gname = face->type1.glyph_names[n]; |
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/* build unsorted pair table by matching glyph names */ |
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if ( gname ) |
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{ |
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@ -298,15 +322,15 @@ |
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new_count = (FT_UInt)( pair - cmap->pairs ); |
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if ( new_count == 0 ) |
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{ |
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/* there are no unicode characters in here !! */ |
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/* there are no unicode characters in here! */ |
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FT_FREE( cmap->pairs ); |
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error = FT_Err_Invalid_Argument; |
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} |
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else |
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{ |
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/* re-allocate if the new array is much smaller than the original */ |
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/* one.. */ |
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if ( new_count != count && new_count < count/2 ) |
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/* one */ |
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if ( new_count != count && new_count < count / 2 ) |
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{ |
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(void)FT_RENEW_ARRAY( cmap->pairs, count, new_count ); |
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error = 0; |
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@ -315,7 +339,7 @@ |
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/* sort the pairs table to allow efficient binary searches */ |
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qsort( cmap->pairs, |
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new_count, |
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sizeof(T1_CMapUniPairRec), |
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sizeof ( T1_CMapUniPairRec ), |
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t1_cmap_uni_pair_compare ); |
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cmap->num_pairs = new_count; |
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@ -337,7 +361,6 @@ |
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} |
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FT_CALLBACK_DEF( FT_UInt ) |
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t1_cmap_unicode_char_index( T1_CMapUnicode cmap, |
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FT_UInt32 char_code ) |
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@ -347,16 +370,17 @@ |
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FT_UInt mid; |
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T1_CMapUniPair pair; |
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while ( min < max ) |
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{ |
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mid = min + (max - min)/2; |
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mid = min + ( max - min ) / 2; |
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pair = cmap->pairs + mid; |
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if ( pair->unicode == char_code ) |
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return pair->gindex; |
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if ( pair->unicode < char_code ) |
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min = mid+1; |
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min = mid + 1; |
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else |
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max = mid; |
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} |
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@ -368,8 +392,9 @@ |
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t1_cmap_unicode_char_next( T1_CMapUnicode cmap, |
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FT_UInt32 *pchar_code ) |
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{ |
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FT_UInt result = 0; |
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FT_UInt32 char_code = *pchar_code + 1; |
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FT_UInt result = 0; |
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FT_UInt32 char_code = *pchar_code + 1; |
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Restart: |
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{ |
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@ -378,9 +403,10 @@ |
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FT_UInt mid; |
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T1_CMapUniPair pair; |
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while ( min < max ) |
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{ |
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mid = min + ((max - min) >> 1); |
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mid = min + ( ( max - min ) >> 1 ); |
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pair = cmap->pairs + mid; |
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if ( pair->unicode == char_code ) |
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@ -420,12 +446,13 @@ |
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FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
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t1_cmap_unicode_class_rec = |
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{ |
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sizeof( T1_CMapUnicodeRec ), |
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(FT_CMap_InitFunc) t1_cmap_unicode_init, |
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(FT_CMap_DoneFunc) t1_cmap_unicode_done, |
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(FT_CMap_CharIndexFunc) t1_cmap_unicode_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_unicode_char_next |
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}; |
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sizeof ( T1_CMapUnicodeRec ), |
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(FT_CMap_InitFunc) t1_cmap_unicode_init, |
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(FT_CMap_DoneFunc) t1_cmap_unicode_done, |
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(FT_CMap_CharIndexFunc)t1_cmap_unicode_char_index, |
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(FT_CMap_CharNextFunc) t1_cmap_unicode_char_next |
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}; |
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/* END */ |
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Werner Lemberg
23 years ago