| /***************************************************************************/ |
| /* */ |
| /* ftmac.c */ |
| /* */ |
| /* Mac FOND support. Written by just@letterror.com. */ |
| /* */ |
| /* Copyright 1996-2000 by */ |
| /* Just van Rossum, 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. */ |
| /* */ |
| /***************************************************************************/ |
| |
| |
| /* |
| Notes |
| |
| Mac suitcase files can (and often do!) contain multiple fonts. To |
| support this I use the face_index argument of FT_(Open|New)_Face() |
| functions, and pretend the suitcase file is a collection. |
| Warning: although the FOND driver sets face->num_faces field to the |
| number of available fonts, but the Type 1 driver sets it to 1 anyway. |
| So this field is currently not reliable, and I don't see a clean way |
| to resolve that. The face_index argument translates to |
| Get1IndResource( 'FOND', face_index + 1 ); |
| so clients should figure out the resource index of the FOND. |
| (I'll try to provide some example code for this at some point.) |
| |
| |
| The Mac FOND support works roughly like this: |
| |
| - Check whether the offered stream points to a Mac suitcase file. |
| This is done by checking the file type: it has to be 'FFIL' or 'tfil'. |
| The stream that gets passed to our init_face() routine is a stdio |
| stream, which isn't usable for us, since the FOND resources live |
| in the resource fork. So we just grab the stream->pathname field. |
| |
| - Read the FOND resource into memory, then check whether there is |
| a TrueType font and/or (!) a Type 1 font available. |
| |
| - If there is a Type 1 font available (as a separate 'LWFN' file), |
| read its data into memory, massage it slightly so it becomes |
| PFB data, wrap it into a memory stream, load the Type 1 driver |
| and delegate the rest of the work to it by calling FT_Open_Face(). |
| (XXX TODO: after this has been done, the kerning data from the FOND |
| resource should be appended to the face: on the Mac there are usually |
| no AFM files available. However, this is tricky since we need to map |
| Mac char codes to ps glyph names to glyph ID's...) |
| |
| - If there is a TrueType font (an 'sfnt' resource), read it into |
| memory, wrap it into a memory stream, load the TrueType driver |
| and delegate the rest of the work to it, by calling FT_Open_Face(). |
| */ |
| |
| |
| #include <ft2build.h> |
| #include FT_FREETYPE_H |
| #include FT_INTERNAL_STREAM_H |
| #include FT_SOURCE_FILE( truetype, ttobjs.h ) |
| #include FT_SOURCE_FILE( type1, t1objs.h ) |
| |
| #include <Resources.h> |
| #include <Fonts.h> |
| #include <Errors.h> |
| |
| #include <ctype.h> /* for isupper() and isalnum() */ |
| |
| #include FT_MAC_H |
| |
| |
| |
| /* Set PREFER_LWFN to 1 if LWFN (Type 1) is preferred over |
| TrueType in case *both* are available (this is not common, |
| but it *is* possible). */ |
| #ifndef PREFER_LWFN |
| #define PREFER_LWFN 1 |
| #endif |
| |
| |
| |
| /* Quick'n'dirty Pascal string to C string converter. |
| Warning: this call is not thread safe! Use with caution. */ |
| static |
| char* p2c_str( unsigned char* pstr ) |
| { |
| static char cstr[256]; |
| |
| |
| strncpy( cstr, (char*)pstr + 1, pstr[0] ); |
| cstr[pstr[0]] = '\0'; |
| return cstr; |
| } |
| |
| |
| /* Given a pathname, fill in a file spec. */ |
| static |
| int file_spec_from_path( const char* pathname, |
| FSSpec* spec ) |
| { |
| Str255 p_path; |
| FT_ULong path_len; |
| |
| |
| /* convert path to a pascal string */ |
| path_len = strlen( pathname ); |
| if ( path_len > 255 ) |
| return -1; |
| p_path[0] = (unsigned char)path_len; |
| strncpy( (char*)p_path + 1, pathname, path_len ); |
| |
| if ( FSMakeFSSpec( 0, 0, p_path, spec ) != noErr ) |
| return -1; |
| else |
| return 0; |
| } |
| |
| |
| /* Return the file type of the file specified by spec. */ |
| static |
| OSType get_file_type( FSSpec* spec ) |
| { |
| FInfo finfo; |
| |
| |
| if ( FSpGetFInfo( spec, &finfo ) != noErr ) |
| return 0; /* file might not exist */ |
| |
| return finfo.fdType; |
| } |
| |
| |
| /* Given a PostScript font name, create the Macintosh LWFN file name. */ |
| static |
| void create_lwfn_name( char* ps_name, |
| Str255 lwfn_file_name ) |
| { |
| int max = 5, count = 0; |
| FT_Byte* p = lwfn_file_name; |
| FT_Byte* q = (FT_Byte*)ps_name; |
| |
| |
| lwfn_file_name[0] = 0; |
| |
| while ( *q ) |
| { |
| if ( isupper( *q ) ) |
| { |
| if ( count ) |
| max = 3; |
| count = 0; |
| } |
| if ( count < max && ( isalnum( *q ) || *q == '_' ) ) |
| { |
| *++p = *q; |
| lwfn_file_name[0]++; |
| count++; |
| } |
| q++; |
| } |
| } |
| |
| |
| /* Given a file reference, answer its location as a vRefNum |
| and a dirID. */ |
| static |
| FT_Error get_file_location( short ref_num, |
| short* v_ref_num, |
| long* dir_id, |
| unsigned char* file_name ) |
| { |
| FCBPBRec pb; |
| OSErr error; |
| |
| pb.ioNamePtr = file_name; |
| pb.ioVRefNum = 0; |
| pb.ioRefNum = ref_num; |
| pb.ioFCBIndx = 0; |
| |
| |
| error = PBGetFCBInfoSync( &pb ); |
| if ( error == noErr ) |
| { |
| *v_ref_num = pb.ioFCBVRefNum; |
| *dir_id = pb.ioFCBParID; |
| } |
| return error; |
| } |
| |
| |
| /* Make a file spec for an LWFN file from a FOND resource and |
| a file name. */ |
| static |
| FT_Error make_lwfn_spec( Handle fond, |
| unsigned char* file_name, |
| FSSpec* spec ) |
| { |
| FT_Error error; |
| short ref_num, v_ref_num; |
| long dir_id; |
| Str255 fond_file_name; |
| |
| |
| ref_num = HomeResFile( fond ); |
| |
| error = ResError(); |
| if ( !error ) |
| error = get_file_location( ref_num, &v_ref_num, |
| &dir_id, fond_file_name ); |
| if ( !error ) |
| error = FSMakeFSSpec( v_ref_num, dir_id, file_name, spec ); |
| |
| return error; |
| } |
| |
| |
| /* Look inside the FOND data, answer whether there should be an SFNT |
| resource, and answer the name of a possible LWFN Type 1 file. */ |
| static |
| void parse_fond( char* fond_data, |
| short* have_sfnt, |
| short* sfnt_id, |
| Str255 lwfn_file_name ) |
| { |
| AsscEntry* assoc; |
| FamRec* fond; |
| |
| |
| *sfnt_id = 0; |
| *have_sfnt = 0; |
| lwfn_file_name[0] = 0; |
| |
| fond = (FamRec*)fond_data; |
| assoc = (AsscEntry*)( fond_data + sizeof ( FamRec ) + 2 ); |
| |
| if ( assoc->fontSize == 0 ) |
| { |
| *have_sfnt = 1; |
| *sfnt_id = assoc->fontID; |
| } |
| |
| if ( fond->ffStylOff ) |
| { |
| unsigned char* p = (unsigned char*)fond_data; |
| StyleTable* style; |
| unsigned short string_count; |
| unsigned char* name_table = 0; |
| char ps_name[256]; |
| unsigned char* names[64]; |
| int i; |
| |
| |
| p += fond->ffStylOff; |
| style = (StyleTable*)p; |
| p += sizeof ( StyleTable ); |
| string_count = *(unsigned short*)(p); |
| p += sizeof ( short ); |
| |
| for ( i = 0 ; i < string_count && i < 64; i++ ) |
| { |
| names[i] = p; |
| p += names[i][0]; |
| p++; |
| } |
| strcpy( ps_name, p2c_str( names[0] ) ); /* Family name */ |
| |
| if ( style->indexes[0] > 1 ) |
| { |
| unsigned char* suffixes = names[style->indexes[0] - 1]; |
| |
| |
| for ( i=1; i<=suffixes[0]; i++ ) |
| strcat( ps_name, p2c_str( names[suffixes[i] - 1 ] ) ); |
| } |
| create_lwfn_name( ps_name, lwfn_file_name ); |
| } |
| } |
| |
| |
| /* Read Type 1 data from the POST resources inside the LWFN file, |
| return a PFB buffer. This is somewhat convoluted because the FT2 |
| PFB parser wants the ASCII header as one chunk, and the LWFN |
| chunks are often not organized that way, so we'll glue chunks |
| of the same type together. */ |
| static |
| FT_Error read_lwfn( FT_Memory memory, |
| FSSpec* lwfn_spec, |
| FT_Byte** pfb_data, |
| FT_ULong* size ) |
| { |
| FT_Error error = FT_Err_Ok; |
| short res_ref, res_id; |
| unsigned char *buffer, *p, *size_p; |
| FT_ULong total_size = 0; |
| FT_ULong post_size, pfb_chunk_size; |
| Handle post_data; |
| char code, last_code; |
| |
| |
| res_ref = FSpOpenResFile( lwfn_spec, fsRdPerm ); |
| if ( ResError() ) |
| return FT_Err_Out_Of_Memory; |
| UseResFile( res_ref ); |
| |
| /* First pass: load all POST resources, and determine the size of |
| the output buffer. */ |
| res_id = 501; |
| last_code = -1; |
| |
| for (;;) |
| { |
| post_data = Get1Resource( 'POST', res_id++ ); |
| if ( post_data == NULL ) |
| break; /* we're done */ |
| |
| code = (*post_data)[0]; |
| |
| if ( code != last_code ) |
| { |
| if ( code == 5 ) |
| total_size += 2; /* just the end code */ |
| else |
| total_size += 6; /* code + 4 bytes chunk length */ |
| } |
| |
| total_size += GetHandleSize( post_data ) - 2; |
| last_code = code; |
| } |
| |
| if ( ALLOC( buffer, (FT_Long)total_size ) ) |
| goto Error; |
| |
| /* Second pass: append all POST data to the buffer, add PFB fields. |
| Glue all consecutive chunks of the same type together. */ |
| p = buffer; |
| res_id = 501; |
| last_code = -1; |
| pfb_chunk_size = 0; |
| |
| for (;;) |
| { |
| post_data = Get1Resource( 'POST', res_id++ ); |
| if ( post_data == NULL ) |
| break; /* we're done */ |
| |
| post_size = (FT_ULong)GetHandleSize( post_data ) - 2; |
| code = (*post_data)[0]; |
| |
| if ( code != last_code ) |
| { |
| |
| if ( last_code != -1 ) |
| { |
| /* we're done adding a chunk, fill in the size field */ |
| *size_p++ = (FT_Byte)( pfb_chunk_size & 0xFF ); |
| *size_p++ = (FT_Byte)( ( pfb_chunk_size >> 8 ) & 0xFF ); |
| *size_p++ = (FT_Byte)( ( pfb_chunk_size >> 16 ) & 0xFF ); |
| *size_p++ = (FT_Byte)( ( pfb_chunk_size >> 24 ) & 0xFF ); |
| pfb_chunk_size = 0; |
| } |
| |
| *p++ = 0x80; |
| if ( code == 5 ) |
| *p++ = 0x03; /* the end */ |
| else if ( code == 2 ) |
| *p++ = 0x02; /* binary segment */ |
| else |
| *p++ = 0x01; /* ASCII segment */ |
| |
| if ( code != 5 ) |
| { |
| size_p = p; /* save for later */ |
| p += 4; /* make space for size field */ |
| } |
| } |
| |
| memcpy( p, *post_data + 2, post_size ); |
| pfb_chunk_size += post_size; |
| p += post_size; |
| last_code = code; |
| } |
| |
| *pfb_data = buffer; |
| *size = total_size; |
| |
| Error: |
| CloseResFile( res_ref ); |
| return error; |
| } |
| |
| |
| /* Finalizer for a memory stream; gets called by FT_Done_Face(). |
| It frees the memory it uses. */ |
| static |
| void memory_stream_close( FT_Stream stream ) |
| { |
| FT_Memory memory = stream->memory; |
| |
| |
| FREE( stream->base ); |
| |
| stream->size = 0; |
| stream->base = 0; |
| stream->close = 0; |
| } |
| |
| |
| /* Create a new memory stream from a buffer and a size. */ |
| static |
| FT_Error new_memory_stream( FT_Library library, |
| FT_Byte* base, |
| FT_ULong size, |
| FT_Stream_Close close, |
| FT_Stream* astream ) |
| { |
| FT_Error error; |
| FT_Memory memory; |
| FT_Stream stream; |
| |
| |
| if ( !library ) |
| return FT_Err_Invalid_Library_Handle; |
| |
| if ( !base ) |
| return FT_Err_Invalid_Argument; |
| |
| *astream = 0; |
| memory = library->memory; |
| if ( ALLOC( stream, sizeof ( *stream ) ) ) |
| goto Exit; |
| |
| FT_New_Memory_Stream( library, |
| base, |
| size, |
| stream ); |
| |
| stream->close = close; |
| |
| *astream = stream; |
| |
| Exit: |
| return error; |
| } |
| |
| |
| /* Create a new FT_Face given a buffer and a driver name. */ |
| static |
| FT_Error open_face_from_buffer( FT_Library library, |
| FT_Byte* base, |
| FT_ULong size, |
| FT_Long face_index, |
| char* driver_name, |
| FT_Face* aface ) |
| { |
| FT_Open_Args args; |
| FT_Error error; |
| FT_Stream stream; |
| FT_Memory memory = library->memory; |
| |
| |
| error = new_memory_stream( library, |
| base, |
| size, |
| memory_stream_close, |
| &stream ); |
| if ( error ) |
| { |
| FREE( base ); |
| return error; |
| } |
| |
| args.flags = ft_open_stream; |
| args.stream = stream; |
| if ( driver_name ) |
| { |
| args.flags = args.flags | ft_open_driver; |
| args.driver = FT_Get_Module( library, driver_name ); |
| } |
| |
| error = FT_Open_Face( library, &args, face_index, aface ); |
| if ( error == FT_Err_Ok ) |
| (*aface)->face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM; |
| else |
| { |
| FT_Done_Stream( stream ); |
| FREE( stream ); |
| } |
| return error; |
| } |
| |
| |
| /* Create a new FT_Face from a file spec to an LWFN file. */ |
| static |
| FT_Error FT_New_Face_From_LWFN( FT_Library library, |
| FSSpec* spec, |
| FT_Long face_index, |
| FT_Face* aface ) |
| { |
| FT_Byte* pfb_data; |
| FT_ULong pfb_size; |
| FT_Error error; |
| FT_Memory memory = library->memory; |
| |
| |
| error = read_lwfn( library->memory, spec, &pfb_data, &pfb_size ); |
| if ( error ) |
| return error; |
| |
| #if 0 |
| { |
| FILE* f; |
| char* path; |
| |
| |
| path = p2c_str( spec->name ); |
| strcat( path, ".PFB" ); |
| f = fopen( path, "wb" ); |
| if ( f ) |
| { |
| fwrite( pfb_data, 1, pfb_size, f ); |
| fclose( f ); |
| } |
| } |
| #endif |
| |
| return open_face_from_buffer( library, |
| pfb_data, |
| pfb_size, |
| face_index, |
| "type1", |
| aface ); |
| } |
| |
| |
| /* Create a new FT_Face from an SFNT resource, specified by res ID. */ |
| static |
| FT_Error FT_New_Face_From_SFNT( FT_Library library, |
| short sfnt_id, |
| FT_Long face_index, |
| FT_Face* aface ) |
| { |
| Handle sfnt = NULL; |
| FT_Byte* sfnt_data; |
| size_t sfnt_size; |
| FT_Stream stream = NULL; |
| FT_Error error = 0; |
| FT_Memory memory = library->memory; |
| |
| |
| sfnt = GetResource( 'sfnt', sfnt_id ); |
| if ( ResError() ) |
| return FT_Err_Invalid_Handle; |
| |
| sfnt_size = (FT_ULong)GetHandleSize( sfnt ); |
| if ( ALLOC( sfnt_data, (FT_Long)sfnt_size ) ) |
| { |
| ReleaseResource( sfnt ); |
| return error; |
| } |
| |
| HLock( sfnt ); |
| memcpy( sfnt_data, *sfnt, sfnt_size ); |
| HUnlock( sfnt ); |
| ReleaseResource( sfnt ); |
| |
| return open_face_from_buffer( library, |
| sfnt_data, |
| sfnt_size, |
| face_index, |
| "truetype", |
| aface ); |
| } |
| |
| |
| /* Create a new FT_Face from a file spec to a suitcase file. */ |
| static |
| FT_Error FT_New_Face_From_Suitcase( FT_Library library, |
| FSSpec* spec, |
| FT_Long face_index, |
| FT_Face* aface ) |
| { |
| FT_Error error = FT_Err_Ok; |
| short res_ref, res_index; |
| Handle fond; |
| |
| |
| res_ref = FSpOpenResFile( spec, fsRdPerm ); |
| if ( ResError() ) |
| return FT_Err_Cannot_Open_Resource; |
| UseResFile( res_ref ); |
| |
| /* face_index may be -1, in which case we |
| just need to do a sanity check */ |
| if ( face_index < 0 ) |
| res_index = 1; |
| else |
| { |
| res_index = (short)( face_index + 1 ); |
| face_index = 0; |
| } |
| fond = Get1IndResource( 'FOND', res_index ); |
| if ( ResError() ) |
| { |
| error = FT_Err_Cannot_Open_Resource; |
| goto Error; |
| } |
| |
| error = FT_New_Face_From_FOND( library, fond, face_index, aface ); |
| |
| Error: |
| CloseResFile( res_ref ); |
| return error; |
| } |
| |
| |
| /* documentation in ftmac.h */ |
| |
| FT_EXPORT_DEF( FT_Error ) FT_New_Face_From_FOND( FT_Library library, |
| Handle fond, |
| FT_Long face_index, |
| FT_Face *aface ) |
| { |
| short sfnt_id, have_sfnt, have_lwfn = 0; |
| Str255 lwfn_file_name; |
| short fond_id; |
| OSType fond_type; |
| Str255 fond_name; |
| FSSpec lwfn_spec; |
| FT_Error error = FT_Err_Unknown_File_Format; |
| |
| |
| GetResInfo(fond, &fond_id, &fond_type, fond_name); |
| if ( ResError() != noErr || fond_type != 'FOND' ) |
| return FT_Err_Invalid_File_Format; |
| |
| HLock( fond ); |
| parse_fond( *fond, &have_sfnt, &sfnt_id, lwfn_file_name ); |
| HUnlock( fond ); |
| |
| if ( lwfn_file_name[0] ) |
| { |
| if ( make_lwfn_spec( fond, lwfn_file_name, &lwfn_spec ) == FT_Err_Ok ) |
| have_lwfn = 1; /* yeah, we got one! */ |
| else |
| have_lwfn = 0; /* no LWFN file found */ |
| } |
| |
| if ( have_lwfn && ( !have_sfnt || PREFER_LWFN ) ) |
| return FT_New_Face_From_LWFN( library, |
| &lwfn_spec, |
| face_index, |
| aface ); |
| else if ( have_sfnt ) |
| return FT_New_Face_From_SFNT( library, |
| sfnt_id, |
| face_index, |
| aface ); |
| |
| return FT_Err_Unknown_File_Format; |
| } |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* <Function> */ |
| /* FT_New_Face */ |
| /* */ |
| /* <Description> */ |
| /* This is the Mac-specific implementation of FT_New_Face. In */ |
| /* addition to the standard FT_New_Face() functionality, it also */ |
| /* accepts pathnames to Mac suitcase files. For further */ |
| /* documentation see the original FT_New_Face() in freetype.h. */ |
| /* */ |
| FT_EXPORT_DEF( FT_Error ) FT_New_Face( FT_Library library, |
| const char* pathname, |
| FT_Long face_index, |
| FT_Face *aface ) |
| { |
| FT_Open_Args args; |
| FSSpec spec; |
| OSType file_type; |
| |
| |
| /* test for valid `library' and `aface' delayed to FT_Open_Face() */ |
| if ( !pathname ) |
| return FT_Err_Invalid_Argument; |
| |
| if ( file_spec_from_path( pathname, &spec ) ) |
| return FT_Err_Invalid_Argument; |
| |
| file_type = get_file_type( &spec ); |
| if ( file_type == 'FFIL' || file_type == 'tfil' ) |
| return FT_New_Face_From_Suitcase( library, &spec, face_index, aface ); |
| else if ( file_type == 'LWFN' ) |
| return FT_New_Face_From_LWFN( library, &spec, face_index, aface ); |
| else |
| { |
| args.flags = ft_open_pathname; |
| args.pathname = (char*)pathname; |
| |
| return FT_Open_Face( library, &args, face_index, aface ); |
| } |
| } |
| |
| |
| /* END */ |