0,0 → 1,210 |
/***************************************************************************/ |
/* */ |
/* cffcmap.c */ |
/* */ |
/* CFF character mapping table (cmap) support (body). */ |
/* */ |
/* Copyright 2002-2007, 2010, 2013 by */ |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
/* */ |
/* This file is part of the FreeType project, and may only be used, */ |
/* modified, and distributed under the terms of the FreeType project */ |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
/* this file you indicate that you have read the license and */ |
/* understand and accept it fully. */ |
/* */ |
/***************************************************************************/ |
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#include <ft2build.h> |
#include FT_INTERNAL_DEBUG_H |
#include "cffcmap.h" |
#include "cffload.h" |
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#include "cfferrs.h" |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** CFF STANDARD (AND EXPERT) ENCODING CMAPS *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_CALLBACK_DEF( FT_Error ) |
cff_cmap_encoding_init( CFF_CMapStd cmap ) |
{ |
TT_Face face = (TT_Face)FT_CMAP_FACE( cmap ); |
CFF_Font cff = (CFF_Font)face->extra.data; |
CFF_Encoding encoding = &cff->encoding; |
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cmap->gids = encoding->codes; |
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return 0; |
} |
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FT_CALLBACK_DEF( void ) |
cff_cmap_encoding_done( CFF_CMapStd cmap ) |
{ |
cmap->gids = NULL; |
} |
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FT_CALLBACK_DEF( FT_UInt ) |
cff_cmap_encoding_char_index( CFF_CMapStd cmap, |
FT_UInt32 char_code ) |
{ |
FT_UInt result = 0; |
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if ( char_code < 256 ) |
result = cmap->gids[char_code]; |
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return result; |
} |
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FT_CALLBACK_DEF( FT_UInt32 ) |
cff_cmap_encoding_char_next( CFF_CMapStd cmap, |
FT_UInt32 *pchar_code ) |
{ |
FT_UInt result = 0; |
FT_UInt32 char_code = *pchar_code; |
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*pchar_code = 0; |
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if ( char_code < 255 ) |
{ |
FT_UInt code = (FT_UInt)(char_code + 1); |
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for (;;) |
{ |
if ( code >= 256 ) |
break; |
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result = cmap->gids[code]; |
if ( result != 0 ) |
{ |
*pchar_code = code; |
break; |
} |
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code++; |
} |
} |
return result; |
} |
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FT_DEFINE_CMAP_CLASS(cff_cmap_encoding_class_rec, |
sizeof ( CFF_CMapStdRec ), |
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(FT_CMap_InitFunc) cff_cmap_encoding_init, |
(FT_CMap_DoneFunc) cff_cmap_encoding_done, |
(FT_CMap_CharIndexFunc)cff_cmap_encoding_char_index, |
(FT_CMap_CharNextFunc) cff_cmap_encoding_char_next, |
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NULL, NULL, NULL, NULL, NULL |
) |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** CFF SYNTHETIC UNICODE ENCODING CMAP *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_CALLBACK_DEF( const char* ) |
cff_sid_to_glyph_name( TT_Face face, |
FT_UInt idx ) |
{ |
CFF_Font cff = (CFF_Font)face->extra.data; |
CFF_Charset charset = &cff->charset; |
FT_UInt sid = charset->sids[idx]; |
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return cff_index_get_sid_string( cff, sid ); |
} |
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FT_CALLBACK_DEF( FT_Error ) |
cff_cmap_unicode_init( PS_Unicodes unicodes ) |
{ |
TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); |
FT_Memory memory = FT_FACE_MEMORY( face ); |
CFF_Font cff = (CFF_Font)face->extra.data; |
CFF_Charset charset = &cff->charset; |
FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
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/* can't build Unicode map for CID-keyed font */ |
/* because we don't know glyph names. */ |
if ( !charset->sids ) |
return FT_THROW( No_Unicode_Glyph_Name ); |
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return psnames->unicodes_init( memory, |
unicodes, |
cff->num_glyphs, |
(PS_GetGlyphNameFunc)&cff_sid_to_glyph_name, |
(PS_FreeGlyphNameFunc)NULL, |
(FT_Pointer)face ); |
} |
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FT_CALLBACK_DEF( void ) |
cff_cmap_unicode_done( PS_Unicodes unicodes ) |
{ |
FT_Face face = FT_CMAP_FACE( unicodes ); |
FT_Memory memory = FT_FACE_MEMORY( face ); |
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FT_FREE( unicodes->maps ); |
unicodes->num_maps = 0; |
} |
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FT_CALLBACK_DEF( FT_UInt ) |
cff_cmap_unicode_char_index( PS_Unicodes unicodes, |
FT_UInt32 char_code ) |
{ |
TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); |
CFF_Font cff = (CFF_Font)face->extra.data; |
FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
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return psnames->unicodes_char_index( unicodes, char_code ); |
} |
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FT_CALLBACK_DEF( FT_UInt32 ) |
cff_cmap_unicode_char_next( PS_Unicodes unicodes, |
FT_UInt32 *pchar_code ) |
{ |
TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); |
CFF_Font cff = (CFF_Font)face->extra.data; |
FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
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return psnames->unicodes_char_next( unicodes, pchar_code ); |
} |
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FT_DEFINE_CMAP_CLASS(cff_cmap_unicode_class_rec, |
sizeof ( PS_UnicodesRec ), |
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(FT_CMap_InitFunc) cff_cmap_unicode_init, |
(FT_CMap_DoneFunc) cff_cmap_unicode_done, |
(FT_CMap_CharIndexFunc)cff_cmap_unicode_char_index, |
(FT_CMap_CharNextFunc) cff_cmap_unicode_char_next, |
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NULL, NULL, NULL, NULL, NULL |
) |
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/* END */ |