+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftmac.c */
-/* */
-/* Mac FOND support. Written by just@letterror.com. */
-/* */
-/* Copyright 1996-2001 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 "truetype/ttobjs.h"
-#include "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 */
projects / rrdtool.git / blobdiff