1 /**************************************************************************** 2 * 3 * ftsnames.c 4 * 5 * Simple interface to access SFNT name tables (which are used 6 * to hold font names, copyright info, notices, etc.) (body). 7 * 8 * This is _not_ used to retrieve glyph names! 9 * 10 * Copyright (C) 1996-2019 by 11 * David Turner, Robert Wilhelm, and Werner Lemberg. 12 * 13 * This file is part of the FreeType project, and may only be used, 14 * modified, and distributed under the terms of the FreeType project 15 * license, LICENSE.TXT. By continuing to use, modify, or distribute 16 * this file you indicate that you have read the license and 17 * understand and accept it fully. 18 * 19 */ 20 21 22 #include <ft2build.h> 23 #include FT_INTERNAL_DEBUG_H 24 25 #include FT_SFNT_NAMES_H 26 #include FT_INTERNAL_TRUETYPE_TYPES_H 27 #include FT_INTERNAL_STREAM_H 28 29 30 #ifdef TT_CONFIG_OPTION_SFNT_NAMES 31 32 33 /* documentation is in ftsnames.h */ 34 35 FT_EXPORT_DEF( FT_UInt ) FT_Get_Sfnt_Name_Count(FT_Face face)36 FT_Get_Sfnt_Name_Count( FT_Face face ) 37 { 38 return ( face && FT_IS_SFNT( face ) ) ? ((TT_Face)face)->num_names : 0; 39 } 40 41 42 /* documentation is in ftsnames.h */ 43 44 FT_EXPORT_DEF( FT_Error ) FT_Get_Sfnt_Name(FT_Face face,FT_UInt idx,FT_SfntName * aname)45 FT_Get_Sfnt_Name( FT_Face face, 46 FT_UInt idx, 47 FT_SfntName *aname ) 48 { 49 FT_Error error = FT_ERR( Invalid_Argument ); 50 51 52 if ( aname && face && FT_IS_SFNT( face ) ) 53 { 54 TT_Face ttface = (TT_Face)face; 55 56 57 if ( idx < (FT_UInt)ttface->num_names ) 58 { 59 TT_Name entry = ttface->name_table.names + idx; 60 61 62 /* load name on demand */ 63 if ( entry->stringLength > 0 && !entry->string ) 64 { 65 FT_Memory memory = face->memory; 66 FT_Stream stream = face->stream; 67 68 69 if ( FT_NEW_ARRAY ( entry->string, entry->stringLength ) || 70 FT_STREAM_SEEK( entry->stringOffset ) || 71 FT_STREAM_READ( entry->string, entry->stringLength ) ) 72 { 73 FT_FREE( entry->string ); 74 entry->stringLength = 0; 75 } 76 } 77 78 aname->platform_id = entry->platformID; 79 aname->encoding_id = entry->encodingID; 80 aname->language_id = entry->languageID; 81 aname->name_id = entry->nameID; 82 aname->string = (FT_Byte*)entry->string; 83 aname->string_len = entry->stringLength; 84 85 error = FT_Err_Ok; 86 } 87 } 88 89 return error; 90 } 91 92 93 /* documentation is in ftsnames.h */ 94 95 FT_EXPORT_DEF( FT_Error ) FT_Get_Sfnt_LangTag(FT_Face face,FT_UInt langID,FT_SfntLangTag * alangTag)96 FT_Get_Sfnt_LangTag( FT_Face face, 97 FT_UInt langID, 98 FT_SfntLangTag *alangTag ) 99 { 100 FT_Error error = FT_ERR( Invalid_Argument ); 101 102 103 if ( alangTag && face && FT_IS_SFNT( face ) ) 104 { 105 TT_Face ttface = (TT_Face)face; 106 107 108 if ( ttface->name_table.format != 1 ) 109 return FT_THROW( Invalid_Table ); 110 111 if ( langID > 0x8000U && 112 langID - 0x8000U < ttface->name_table.numLangTagRecords ) 113 { 114 TT_LangTag entry = ttface->name_table.langTags + 115 ( langID - 0x8000U ); 116 117 118 /* load name on demand */ 119 if ( entry->stringLength > 0 && !entry->string ) 120 { 121 FT_Memory memory = face->memory; 122 FT_Stream stream = face->stream; 123 124 125 if ( FT_NEW_ARRAY ( entry->string, entry->stringLength ) || 126 FT_STREAM_SEEK( entry->stringOffset ) || 127 FT_STREAM_READ( entry->string, entry->stringLength ) ) 128 { 129 FT_FREE( entry->string ); 130 entry->stringLength = 0; 131 } 132 } 133 134 alangTag->string = (FT_Byte*)entry->string; 135 alangTag->string_len = entry->stringLength; 136 137 error = FT_Err_Ok; 138 } 139 } 140 141 return error; 142 } 143 144 145 #else /* !TT_CONFIG_OPTION_SFNT_NAMES */ 146 147 148 FT_EXPORT_DEF( FT_UInt ) FT_Get_Sfnt_Name_Count(FT_Face face)149 FT_Get_Sfnt_Name_Count( FT_Face face ) 150 { 151 FT_UNUSED( face ); 152 153 return 0; 154 } 155 156 157 FT_EXPORT_DEF( FT_Error ) FT_Get_Sfnt_Name(FT_Face face,FT_UInt idx,FT_SfntName * aname)158 FT_Get_Sfnt_Name( FT_Face face, 159 FT_UInt idx, 160 FT_SfntName *aname ) 161 { 162 FT_UNUSED( face ); 163 FT_UNUSED( idx ); 164 FT_UNUSED( aname ); 165 166 return FT_THROW( Unimplemented_Feature ); 167 } 168 169 170 FT_EXPORT_DEF( FT_Error ) FT_Get_Sfnt_LangTag(FT_Face face,FT_UInt langID,FT_SfntLangTag * alangTag)171 FT_Get_Sfnt_LangTag( FT_Face face, 172 FT_UInt langID, 173 FT_SfntLangTag *alangTag ) 174 { 175 FT_UNUSED( face ); 176 FT_UNUSED( langID ); 177 FT_UNUSED( alangTag ); 178 179 return FT_THROW( Unimplemented_Feature ); 180 } 181 182 183 #endif /* !TT_CONFIG_OPTION_SFNT_NAMES */ 184 185 186 /* END */ 187