| /**************************************************************************** |
| * |
| * t1cmap.c |
| * |
| * Type 1 character map support (body). |
| * |
| * Copyright (C) 2002-2021 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. |
| * |
| */ |
| |
| |
| #include "t1cmap.h" |
| |
| #include <freetype/internal/ftdebug.h> |
| |
| #include "psauxerr.h" |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /***** *****/ |
| /***** TYPE1 STANDARD (AND EXPERT) ENCODING CMAPS *****/ |
| /***** *****/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| static void |
| t1_cmap_std_init( T1_CMapStd cmap, |
| FT_Int is_expert ) |
| { |
| T1_Face face = (T1_Face)FT_CMAP_FACE( cmap ); |
| FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| |
| |
| cmap->num_glyphs = (FT_UInt)face->type1.num_glyphs; |
| cmap->glyph_names = (const char* const*)face->type1.glyph_names; |
| cmap->sid_to_string = psnames->adobe_std_strings; |
| cmap->code_to_sid = is_expert ? psnames->adobe_expert_encoding |
| : psnames->adobe_std_encoding; |
| |
| FT_ASSERT( cmap->code_to_sid ); |
| } |
| |
| |
| FT_CALLBACK_DEF( void ) |
| t1_cmap_std_done( T1_CMapStd cmap ) |
| { |
| cmap->num_glyphs = 0; |
| cmap->glyph_names = NULL; |
| cmap->sid_to_string = NULL; |
| cmap->code_to_sid = NULL; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_UInt ) |
| t1_cmap_std_char_index( T1_CMapStd cmap, |
| FT_UInt32 char_code ) |
| { |
| FT_UInt result = 0; |
| |
| |
| if ( char_code < 256 ) |
| { |
| FT_UInt code, n; |
| const char* glyph_name; |
| |
| |
| /* convert character code to Adobe SID string */ |
| code = cmap->code_to_sid[char_code]; |
| glyph_name = cmap->sid_to_string( code ); |
| |
| /* look for the corresponding glyph name */ |
| for ( n = 0; n < cmap->num_glyphs; n++ ) |
| { |
| const char* gname = cmap->glyph_names[n]; |
| |
| |
| if ( gname && gname[0] == glyph_name[0] && |
| ft_strcmp( gname, glyph_name ) == 0 ) |
| { |
| result = n; |
| break; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_UInt32 ) |
| t1_cmap_std_char_next( T1_CMapStd cmap, |
| FT_UInt32 *pchar_code ) |
| { |
| FT_UInt result = 0; |
| FT_UInt32 char_code = *pchar_code + 1; |
| |
| |
| while ( char_code < 256 ) |
| { |
| result = t1_cmap_std_char_index( cmap, char_code ); |
| if ( result != 0 ) |
| goto Exit; |
| |
| char_code++; |
| } |
| char_code = 0; |
| |
| Exit: |
| *pchar_code = char_code; |
| return result; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_Error ) |
| t1_cmap_standard_init( T1_CMapStd cmap, |
| FT_Pointer pointer ) |
| { |
| FT_UNUSED( pointer ); |
| |
| |
| t1_cmap_std_init( cmap, 0 ); |
| return 0; |
| } |
| |
| |
| FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| t1_cmap_standard_class_rec = |
| { |
| sizeof ( T1_CMapStdRec ), |
| |
| (FT_CMap_InitFunc) t1_cmap_standard_init, /* init */ |
| (FT_CMap_DoneFunc) t1_cmap_std_done, /* done */ |
| (FT_CMap_CharIndexFunc)t1_cmap_std_char_index, /* char_index */ |
| (FT_CMap_CharNextFunc) t1_cmap_std_char_next, /* char_next */ |
| |
| (FT_CMap_CharVarIndexFunc) NULL, /* char_var_index */ |
| (FT_CMap_CharVarIsDefaultFunc)NULL, /* char_var_default */ |
| (FT_CMap_VariantListFunc) NULL, /* variant_list */ |
| (FT_CMap_CharVariantListFunc) NULL, /* charvariant_list */ |
| (FT_CMap_VariantCharListFunc) NULL /* variantchar_list */ |
| }; |
| |
| |
| FT_CALLBACK_DEF( FT_Error ) |
| t1_cmap_expert_init( T1_CMapStd cmap, |
| FT_Pointer pointer ) |
| { |
| FT_UNUSED( pointer ); |
| |
| |
| t1_cmap_std_init( cmap, 1 ); |
| return 0; |
| } |
| |
| FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| t1_cmap_expert_class_rec = |
| { |
| sizeof ( T1_CMapStdRec ), |
| |
| (FT_CMap_InitFunc) t1_cmap_expert_init, /* init */ |
| (FT_CMap_DoneFunc) t1_cmap_std_done, /* done */ |
| (FT_CMap_CharIndexFunc)t1_cmap_std_char_index, /* char_index */ |
| (FT_CMap_CharNextFunc) t1_cmap_std_char_next, /* char_next */ |
| |
| (FT_CMap_CharVarIndexFunc) NULL, /* char_var_index */ |
| (FT_CMap_CharVarIsDefaultFunc)NULL, /* char_var_default */ |
| (FT_CMap_VariantListFunc) NULL, /* variant_list */ |
| (FT_CMap_CharVariantListFunc) NULL, /* charvariant_list */ |
| (FT_CMap_VariantCharListFunc) NULL /* variantchar_list */ |
| }; |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /***** *****/ |
| /***** TYPE1 CUSTOM ENCODING CMAP *****/ |
| /***** *****/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| |
| FT_CALLBACK_DEF( FT_Error ) |
| t1_cmap_custom_init( T1_CMapCustom cmap, |
| FT_Pointer pointer ) |
| { |
| T1_Face face = (T1_Face)FT_CMAP_FACE( cmap ); |
| T1_Encoding encoding = &face->type1.encoding; |
| |
| FT_UNUSED( pointer ); |
| |
| |
| cmap->first = (FT_UInt)encoding->code_first; |
| cmap->count = (FT_UInt)encoding->code_last - cmap->first; |
| cmap->indices = encoding->char_index; |
| |
| FT_ASSERT( cmap->indices ); |
| FT_ASSERT( encoding->code_first <= encoding->code_last ); |
| |
| return 0; |
| } |
| |
| |
| FT_CALLBACK_DEF( void ) |
| t1_cmap_custom_done( T1_CMapCustom cmap ) |
| { |
| cmap->indices = NULL; |
| cmap->first = 0; |
| cmap->count = 0; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_UInt ) |
| t1_cmap_custom_char_index( T1_CMapCustom cmap, |
| FT_UInt32 char_code ) |
| { |
| FT_UInt result = 0; |
| |
| |
| if ( ( char_code >= cmap->first ) && |
| ( char_code < ( cmap->first + cmap->count ) ) ) |
| result = cmap->indices[char_code]; |
| |
| return result; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_UInt32 ) |
| t1_cmap_custom_char_next( T1_CMapCustom cmap, |
| FT_UInt32 *pchar_code ) |
| { |
| FT_UInt result = 0; |
| FT_UInt32 char_code = *pchar_code; |
| |
| |
| char_code++; |
| |
| if ( char_code < cmap->first ) |
| char_code = cmap->first; |
| |
| for ( ; char_code < ( cmap->first + cmap->count ); char_code++ ) |
| { |
| result = cmap->indices[char_code]; |
| if ( result != 0 ) |
| goto Exit; |
| } |
| |
| char_code = 0; |
| |
| Exit: |
| *pchar_code = char_code; |
| return result; |
| } |
| |
| |
| FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| t1_cmap_custom_class_rec = |
| { |
| sizeof ( T1_CMapCustomRec ), |
| |
| (FT_CMap_InitFunc) t1_cmap_custom_init, /* init */ |
| (FT_CMap_DoneFunc) t1_cmap_custom_done, /* done */ |
| (FT_CMap_CharIndexFunc)t1_cmap_custom_char_index, /* char_index */ |
| (FT_CMap_CharNextFunc) t1_cmap_custom_char_next, /* char_next */ |
| |
| (FT_CMap_CharVarIndexFunc) NULL, /* char_var_index */ |
| (FT_CMap_CharVarIsDefaultFunc)NULL, /* char_var_default */ |
| (FT_CMap_VariantListFunc) NULL, /* variant_list */ |
| (FT_CMap_CharVariantListFunc) NULL, /* charvariant_list */ |
| (FT_CMap_VariantCharListFunc) NULL /* variantchar_list */ |
| }; |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /***** *****/ |
| /***** TYPE1 SYNTHETIC UNICODE ENCODING CMAP *****/ |
| /***** *****/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| FT_CALLBACK_DEF( const char * ) |
| psaux_get_glyph_name( T1_Face face, |
| FT_UInt idx ) |
| { |
| return face->type1.glyph_names[idx]; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_Error ) |
| t1_cmap_unicode_init( PS_Unicodes unicodes, |
| FT_Pointer pointer ) |
| { |
| T1_Face face = (T1_Face)FT_CMAP_FACE( unicodes ); |
| FT_Memory memory = FT_FACE_MEMORY( face ); |
| FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| |
| FT_UNUSED( pointer ); |
| |
| |
| if ( !psnames->unicodes_init ) |
| return FT_THROW( Unimplemented_Feature ); |
| |
| return psnames->unicodes_init( memory, |
| unicodes, |
| (FT_UInt)face->type1.num_glyphs, |
| (PS_GetGlyphNameFunc)&psaux_get_glyph_name, |
| (PS_FreeGlyphNameFunc)NULL, |
| (FT_Pointer)face ); |
| } |
| |
| |
| FT_CALLBACK_DEF( void ) |
| t1_cmap_unicode_done( PS_Unicodes unicodes ) |
| { |
| FT_Face face = FT_CMAP_FACE( unicodes ); |
| FT_Memory memory = FT_FACE_MEMORY( face ); |
| |
| |
| FT_FREE( unicodes->maps ); |
| unicodes->num_maps = 0; |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_UInt ) |
| t1_cmap_unicode_char_index( PS_Unicodes unicodes, |
| FT_UInt32 char_code ) |
| { |
| T1_Face face = (T1_Face)FT_CMAP_FACE( unicodes ); |
| FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| |
| |
| return psnames->unicodes_char_index( unicodes, char_code ); |
| } |
| |
| |
| FT_CALLBACK_DEF( FT_UInt32 ) |
| t1_cmap_unicode_char_next( PS_Unicodes unicodes, |
| FT_UInt32 *pchar_code ) |
| { |
| T1_Face face = (T1_Face)FT_CMAP_FACE( unicodes ); |
| FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| |
| |
| return psnames->unicodes_char_next( unicodes, pchar_code ); |
| } |
| |
| |
| FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| t1_cmap_unicode_class_rec = |
| { |
| sizeof ( PS_UnicodesRec ), |
| |
| (FT_CMap_InitFunc) t1_cmap_unicode_init, /* init */ |
| (FT_CMap_DoneFunc) t1_cmap_unicode_done, /* done */ |
| (FT_CMap_CharIndexFunc)t1_cmap_unicode_char_index, /* char_index */ |
| (FT_CMap_CharNextFunc) t1_cmap_unicode_char_next, /* char_next */ |
| |
| (FT_CMap_CharVarIndexFunc) NULL, /* char_var_index */ |
| (FT_CMap_CharVarIsDefaultFunc)NULL, /* char_var_default */ |
| (FT_CMap_VariantListFunc) NULL, /* variant_list */ |
| (FT_CMap_CharVariantListFunc) NULL, /* charvariant_list */ |
| (FT_CMap_VariantCharListFunc) NULL /* variantchar_list */ |
| }; |
| |
| |
| /* END */ |
