| /***************************************************************************/ |
| /* */ |
| /* sfdriver.c */ |
| /* */ |
| /* High-level SFNT driver interface (body). */ |
| /* */ |
| /* Copyright 1996-2001, 2002 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 <ft2build.h> |
| #include FT_INTERNAL_SFNT_H |
| #include FT_INTERNAL_OBJECTS_H |
| |
| #include "sfdriver.h" |
| #include "ttload.h" |
| #include "ttcmap.h" |
| #include "sfobjs.h" |
| |
| #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
| #include "ttsbit.h" |
| #endif |
| |
| #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
| #include "ttpost.h" |
| #endif |
| |
| |
| static void* |
| get_sfnt_table( TT_Face face, |
| FT_Sfnt_Tag tag ) |
| { |
| void* table; |
| |
| |
| switch ( tag ) |
| { |
| case ft_sfnt_head: |
| table = &face->header; |
| break; |
| |
| case ft_sfnt_hhea: |
| table = &face->horizontal; |
| break; |
| |
| case ft_sfnt_vhea: |
| table = face->vertical_info ? &face->vertical : 0; |
| break; |
| |
| case ft_sfnt_os2: |
| table = face->os2.version == 0xFFFFU ? 0 : &face->os2; |
| break; |
| |
| case ft_sfnt_post: |
| table = &face->postscript; |
| break; |
| |
| case ft_sfnt_maxp: |
| table = &face->max_profile; |
| break; |
| |
| case ft_sfnt_pclt: |
| table = face->pclt.Version ? &face->pclt : 0; |
| break; |
| |
| default: |
| table = 0; |
| } |
| |
| return table; |
| } |
| |
| |
| #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
| |
| |
| static FT_Error |
| get_sfnt_glyph_name( TT_Face face, |
| FT_UInt glyph_index, |
| FT_Pointer buffer, |
| FT_UInt buffer_max ) |
| { |
| FT_String* gname; |
| FT_Error error; |
| |
| |
| error = tt_face_get_ps_name( face, glyph_index, &gname ); |
| if ( !error && buffer_max > 0 ) |
| { |
| FT_UInt len = (FT_UInt)( ft_strlen( gname ) ); |
| |
| |
| if ( len >= buffer_max ) |
| len = buffer_max - 1; |
| |
| FT_MEM_COPY( buffer, gname, len ); |
| ((FT_Byte*)buffer)[len] = 0; |
| } |
| |
| return error; |
| } |
| |
| |
| static const char* |
| get_sfnt_postscript_name( TT_Face face ) |
| { |
| FT_Int n, found_win, found_apple; |
| const char* result = NULL; |
| |
| |
| /* shouldn't happen, but just in case to avoid memory leaks */ |
| if ( face->root.internal->postscript_name ) |
| return face->root.internal->postscript_name; |
| |
| /* scan the name table to see whether we have a Postscript name here, */ |
| /* either in Macintosh or Windows platform encodings */ |
| found_win = -1; |
| found_apple = -1; |
| |
| for ( n = 0; n < face->num_names; n++ ) |
| { |
| TT_NameEntryRec* name = face->name_table.names + n; |
| |
| |
| if ( name->nameID == 6 && name->stringLength > 0 ) |
| { |
| if ( name->platformID == 3 && |
| name->encodingID == 1 && |
| name->languageID == 0x409 ) |
| found_win = n; |
| |
| if ( name->platformID == 1 && |
| name->encodingID == 0 && |
| name->languageID == 0 ) |
| found_apple = n; |
| } |
| } |
| |
| if ( found_win != -1 ) |
| { |
| FT_Memory memory = face->root.memory; |
| TT_NameEntryRec* name = face->name_table.names + found_win; |
| FT_UInt len = name->stringLength / 2; |
| FT_Error error; |
| |
| |
| if ( !FT_ALLOC( result, name->stringLength + 1 ) ) |
| { |
| FT_Stream stream = face->name_table.stream; |
| FT_String* r = (FT_String*)result; |
| FT_Byte* p = (FT_Byte*)name->string; |
| |
| |
| if ( FT_STREAM_SEEK( name->stringOffset ) || |
| FT_FRAME_ENTER( name->stringLength ) ) |
| { |
| FT_FREE( result ); |
| name->stringLength = 0; |
| name->stringOffset = 0; |
| FT_FREE( name->string ); |
| |
| goto Exit; |
| } |
| |
| p = (FT_Byte*)stream->cursor; |
| |
| for ( ; len > 0; len--, p += 2 ) |
| { |
| if ( p[0] == 0 && p[1] >= 32 && p[1] < 128 ) |
| *r++ = p[1]; |
| } |
| *r = '\0'; |
| |
| FT_FRAME_EXIT(); |
| } |
| goto Exit; |
| } |
| |
| if ( found_apple != -1 ) |
| { |
| FT_Memory memory = face->root.memory; |
| TT_NameEntryRec* name = face->name_table.names + found_apple; |
| FT_UInt len = name->stringLength; |
| FT_Error error; |
| |
| |
| if ( !FT_ALLOC( result, len + 1 ) ) |
| { |
| FT_Stream stream = face->name_table.stream; |
| |
| |
| if ( FT_STREAM_SEEK( name->stringOffset ) || |
| FT_STREAM_READ( result, len ) ) |
| { |
| name->stringOffset = 0; |
| name->stringLength = 0; |
| FT_FREE( name->string ); |
| FT_FREE( result ); |
| goto Exit; |
| } |
| ((char*)result)[len] = '\0'; |
| } |
| } |
| |
| Exit: |
| face->root.internal->postscript_name = result; |
| return result; |
| } |
| |
| |
| #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */ |
| |
| |
| FT_CALLBACK_DEF( FT_Module_Interface ) |
| sfnt_get_interface( FT_Module module, |
| const char* module_interface ) |
| { |
| FT_UNUSED( module ); |
| |
| if ( ft_strcmp( module_interface, "get_sfnt" ) == 0 ) |
| return (FT_Module_Interface)get_sfnt_table; |
| |
| #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
| if ( ft_strcmp( module_interface, "glyph_name" ) == 0 ) |
| return (FT_Module_Interface)get_sfnt_glyph_name; |
| #endif |
| |
| if ( ft_strcmp( module_interface, "postscript_name" ) == 0 ) |
| return (FT_Module_Interface)get_sfnt_postscript_name; |
| |
| return 0; |
| } |
| |
| |
| static |
| const SFNT_Interface sfnt_interface = |
| { |
| tt_face_goto_table, |
| |
| sfnt_init_face, |
| sfnt_load_face, |
| sfnt_done_face, |
| sfnt_get_interface, |
| |
| tt_face_load_any, |
| tt_face_load_sfnt_header, |
| tt_face_load_directory, |
| |
| tt_face_load_header, |
| tt_face_load_metrics_header, |
| tt_face_load_cmap, |
| tt_face_load_max_profile, |
| tt_face_load_os2, |
| tt_face_load_postscript, |
| |
| tt_face_load_names, |
| tt_face_free_names, |
| |
| tt_face_load_hdmx, |
| tt_face_free_hdmx, |
| |
| tt_face_load_kern, |
| tt_face_load_gasp, |
| tt_face_load_pclt, |
| |
| #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
| |
| /* see `ttload.h' */ |
| tt_face_load_bitmap_header, |
| |
| /* see `ttsbit.h' */ |
| tt_face_set_sbit_strike, |
| tt_face_load_sbit_strikes, |
| tt_face_load_sbit_image, |
| tt_face_free_sbit_strikes, |
| |
| #else /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ |
| |
| 0, |
| 0, |
| 0, |
| 0, |
| 0, |
| |
| #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ |
| |
| #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
| |
| /* see `ttpost.h' */ |
| tt_face_get_ps_name, |
| tt_face_free_ps_names, |
| |
| #else /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */ |
| |
| 0, |
| 0, |
| |
| #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */ |
| |
| /* see `ttcmap.h' */ |
| tt_face_load_charmap, |
| tt_face_free_charmap, |
| }; |
| |
| |
| FT_CALLBACK_TABLE_DEF |
| const FT_Module_Class sfnt_module_class = |
| { |
| 0, /* not a font driver or renderer */ |
| sizeof( FT_ModuleRec ), |
| |
| "sfnt", /* driver name */ |
| 0x10000L, /* driver version 1.0 */ |
| 0x20000L, /* driver requires FreeType 2.0 or higher */ |
| |
| (const void*)&sfnt_interface, /* module specific interface */ |
| |
| (FT_Module_Constructor)0, |
| (FT_Module_Destructor) 0, |
| (FT_Module_Requester) sfnt_get_interface |
| }; |
| |
| |
| /* END */ |
