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/***************************************************************************/
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/* Type 1 character map support (body). */
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/* Copyright 2002, 2003 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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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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#include FT_INTERNAL_DEBUG_H
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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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t1_cmap_std_init( T1_CMapStd cmap,
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T1_Face face = (T1_Face)FT_CMAP_FACE( cmap );
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FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)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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cmap->code_to_sid = is_expert ? psnames->adobe_expert_encoding
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: psnames->adobe_std_encoding;
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FT_ASSERT( cmap->code_to_sid != NULL );
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FT_CALLBACK_DEF( void )
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t1_cmap_std_done( T1_CMapStd cmap )
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cmap->glyph_names = NULL;
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cmap->sid_to_string = NULL;
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cmap->code_to_sid = NULL;
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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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if ( char_code < 256 )
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const char* glyph_name;
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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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for ( n = 0; n < cmap->num_glyphs; n++ )
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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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ft_strcmp( gname, glyph_name ) == 0 )
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FT_CALLBACK_DEF( FT_UInt )
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t1_cmap_std_char_next( T1_CMapStd cmap,
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FT_UInt32 *pchar_code )
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FT_UInt32 char_code = *pchar_code + 1;
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while ( char_code < 256 )
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result = t1_cmap_std_char_index( cmap, char_code );
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*pchar_code = char_code;
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FT_CALLBACK_DEF( FT_Error )
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t1_cmap_standard_init( T1_CMapStd cmap )
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t1_cmap_std_init( cmap, 0 );
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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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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_CALLBACK_DEF( FT_Error )
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t1_cmap_expert_init( T1_CMapStd cmap )
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t1_cmap_std_init( cmap, 1 );
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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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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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/*************************************************************************/
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/*************************************************************************/
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/***** TYPE1 CUSTOM ENCODING CMAP *****/
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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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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->indices = encoding->char_index;
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FT_ASSERT( cmap->indices != NULL );
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FT_ASSERT( encoding->code_first <= encoding->code_last );
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FT_CALLBACK_DEF( void )
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t1_cmap_custom_done( T1_CMapCustom cmap )
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cmap->indices = NULL;
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FT_CALLBACK_DEF( FT_UInt )
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t1_cmap_custom_char_index( T1_CMapCustom cmap,
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FT_UInt32 char_code )
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if ( ( char_code >= cmap->first ) &&
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( char_code < ( cmap->first + cmap->count ) ) )
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result = cmap->indices[char_code];
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FT_CALLBACK_DEF( FT_UInt )
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t1_cmap_custom_char_next( T1_CMapCustom cmap,
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FT_UInt32 *pchar_code )
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FT_UInt32 char_code = *pchar_code;
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if ( char_code < cmap->first )
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char_code = cmap->first;
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for ( ; char_code < ( cmap->first + cmap->count ); char_code++ )
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result = cmap->indices[char_code];
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*pchar_code = char_code;
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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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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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/***** TYPE1 SYNTHETIC UNICODE ENCODING CMAP *****/
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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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FT_UInt32 u1 = ((T1_CMapUniPair)pair1)->unicode;
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FT_UInt32 u2 = ((T1_CMapUniPair)pair2)->unicode;
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FT_CALLBACK_DEF( FT_Error )
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t1_cmap_unicode_init( T1_CMapUnicode cmap )
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T1_Face face = (T1_Face)FT_CMAP_FACE( cmap );
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FT_Memory memory = FT_FACE_MEMORY( face );
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FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames;
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count = face->type1.num_glyphs;
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if ( !FT_NEW_ARRAY( cmap->pairs, count ) )
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FT_UInt n, new_count;
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for ( n = 0; n < count; n++ )
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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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uni_code = psnames->unicode_value( gname );
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pair->unicode = uni_code;
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new_count = (FT_UInt)( pair - cmap->pairs );
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if ( new_count == 0 )
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/* there are no unicode characters in here! */
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FT_FREE( cmap->pairs );
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error = PSaux_Err_Invalid_Argument;
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/* re-allocate if the new array is much smaller than the original */
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if ( new_count != count && new_count < count / 2 )
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(void)FT_RENEW_ARRAY( cmap->pairs, count, new_count );
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/* sort the pairs table to allow efficient binary searches */
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ft_qsort( cmap->pairs,
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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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FT_CALLBACK_DEF( void )
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t1_cmap_unicode_done( T1_CMapUnicode cmap )
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FT_Face face = FT_CMAP_FACE(cmap);
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FT_Memory memory = FT_FACE_MEMORY(face);
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FT_FREE( cmap->pairs );
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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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FT_UInt max = cmap->num_pairs;
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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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if ( pair->unicode < char_code )
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FT_CALLBACK_DEF( FT_UInt )
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t1_cmap_unicode_char_next( T1_CMapUnicode cmap,
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FT_UInt32 *pchar_code )
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FT_UInt32 char_code = *pchar_code + 1;
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FT_UInt max = cmap->num_pairs;
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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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result = pair->gindex;
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if ( pair->unicode < char_code )
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/* we didn't find it, but we have a pair just above it */
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if ( min < cmap->num_pairs )
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pair = cmap->pairs + min;
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result = pair->gindex;
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char_code = pair->unicode;
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*pchar_code = char_code;
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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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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