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freetype2/builds/mac/ftmac.c

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/***************************************************************************/
/* */
/* ftmac.c */
/* */
/* Mac FOND support. Written by just@letterror.com. */
/* Heavily Fixed by mpsuzuki, George Williams and Sean McBride */
/* */
/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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: fbit and NFNT bitmap resources are not supported yet. In old
sfnt fonts, bitmap glyph data for each size is stored in each `NFNT'
resources instead of the `bdat' table in the sfnt resource. Therefore,
face->num_fixed_sizes is set to 0, because bitmap data in `NFNT'
resource is unavailable at present.
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().
- Some suitcase fonts (notably Onyx) might point the `LWFN' file to
itself, even though it doesn't contains `POST' resources. To handle
this special case without opening the file an extra time, we just
ignore errors from the `LWFN' and fallback to the `sfnt' if both are
available.
*/
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_INTERNAL_STREAM_H
#if defined( __GNUC__ ) || defined( __IBMC__ )
/* This is for Mac OS X. Without redefinition, OS_INLINE */
/* expands to `static inline' which doesn't survive the */
/* -ansi compilation flag of GCC. */
#if !HAVE_ANSI_OS_INLINE
#undef OS_INLINE
#define OS_INLINE static __inline__
#endif
#include <CoreServices/CoreServices.h>
#include <ApplicationServices/ApplicationServices.h>
#include <sys/syslimits.h> /* PATH_MAX */
#else
#include <Resources.h>
#include <Fonts.h>
#include <Endian.h>
#include <Errors.h>
#include <Files.h>
#include <TextUtils.h>
#endif
#ifndef PATH_MAX
#define PATH_MAX 1024 /* same with Mac OS X's syslimits.h */
#endif
#if defined( __MWERKS__ ) && !TARGET_RT_MAC_MACHO
#include <FSp_fopen.h>
#endif
#define FT_DEPRECATED_ATTRIBUTE
#include FT_MAC_H
/* undefine blocking-macros in ftmac.h */
#undef FT_GetFile_From_Mac_Name
#undef FT_GetFile_From_Mac_ATS_Name
#undef FT_New_Face_From_FOND
#undef FT_New_Face_From_FSSpec
#undef FT_New_Face_From_FSRef
/* FSSpec functions are deprecated since Mac OS X 10.4 */
#ifndef HAVE_FSSPEC
#if TARGET_API_MAC_OS8 || TARGET_API_MAC_CARBON
#define HAVE_FSSPEC 1
#else
#define HAVE_FSSPEC 0
#endif
#endif
/* most FSRef functions were introduced since Mac OS 9 */
#ifndef HAVE_FSREF
#if TARGET_API_MAC_OSX
#define HAVE_FSREF 1
#else
#define HAVE_FSREF 0
#endif
#endif
/* QuickDraw is deprecated since Mac OS X 10.4 */
#ifndef HAVE_QUICKDRAW_CARBON
#if TARGET_API_MAC_OS8 || TARGET_API_MAC_CARBON
#define HAVE_QUICKDRAW_CARBON 1
#else
#define HAVE_QUICKDRAW_CARBON 0
#endif
#endif
/* AppleTypeService is available since Mac OS X */
#ifndef HAVE_ATS
#if TARGET_API_MAC_OSX
#define HAVE_ATS 1
#ifndef kATSOptionFlagsUnRestrictedScope /* since Mac OS X 10.1 */
#define kATSOptionFlagsUnRestrictedScope kATSOptionFlagsDefault
#endif
#else
#define HAVE_ATS 0
#endif
#endif
/* Some portable types are unavailable on legacy SDKs */
#ifndef MAC_OS_X_VERSION_10_5
typedef short ResourceIndex;
#endif
/* 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
#if !HAVE_QUICKDRAW_CARBON /* QuickDraw is deprecated since Mac OS X 10.4 */
FT_EXPORT_DEF( FT_Error )
FT_GetFile_From_Mac_Name( const char* fontName,
FSSpec* pathSpec,
FT_Long* face_index )
{
FT_UNUSED( fontName );
FT_UNUSED( pathSpec );
FT_UNUSED( face_index );
return FT_Err_Unimplemented_Feature;
}
#else
FT_EXPORT_DEF( FT_Error )
FT_GetFile_From_Mac_Name( const char* fontName,
FSSpec* pathSpec,
FT_Long* face_index )
{
OptionBits options = kFMUseGlobalScopeOption;
FMFontFamilyIterator famIter;
OSStatus status = FMCreateFontFamilyIterator( NULL, NULL,
options,
&famIter );
FMFont the_font = 0;
FMFontFamily family = 0;
*face_index = 0;
while ( status == 0 && !the_font )
{
status = FMGetNextFontFamily( &famIter, &family );
if ( status == 0 )
{
int stat2;
FMFontFamilyInstanceIterator instIter;
Str255 famNameStr;
char famName[256];
/* get the family name */
FMGetFontFamilyName( family, famNameStr );
CopyPascalStringToC( famNameStr, famName );
/* iterate through the styles */
FMCreateFontFamilyInstanceIterator( family, &instIter );
*face_index = 0;
stat2 = 0;
while ( stat2 == 0 && !the_font )
{
FMFontStyle style;
FMFontSize size;
FMFont font;
stat2 = FMGetNextFontFamilyInstance( &instIter, &font,
&style, &size );
if ( stat2 == 0 && size == 0 )
{
char fullName[256];
/* build up a complete face name */
ft_strcpy( fullName, famName );
if ( style & bold )
ft_strcat( fullName, " Bold" );
if ( style & italic )
ft_strcat( fullName, " Italic" );
/* compare with the name we are looking for */
if ( ft_strcmp( fullName, fontName ) == 0 )
{
/* found it! */
the_font = font;
}
else
++(*face_index);
}
}
FMDisposeFontFamilyInstanceIterator( &instIter );
}
}
FMDisposeFontFamilyIterator( &famIter );
if ( the_font )
{
FMGetFontContainer( the_font, pathSpec );
return FT_Err_Ok;
}
else
return FT_Err_Unknown_File_Format;
}
#endif /* HAVE_QUICKDRAW_CARBON */
#if HAVE_ATS
/* Private function. */
/* The FSSpec type has been discouraged for a long time, */
/* unfortunately an FSRef replacement API for */
/* ATSFontGetFileSpecification() is only available in */
/* Mac OS X 10.5 and later. */
static OSStatus
FT_ATSFontGetFileReference( ATSFontRef ats_font_id,
FSRef* ats_font_ref )
{
OSStatus err;
#if !defined( MAC_OS_X_VERSION_10_5 ) || \
MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
FSSpec spec;
err = ATSFontGetFileSpecification( ats_font_id, &spec );
if ( noErr == err )
err = FSpMakeFSRef( &spec, ats_font_ref );
#else
err = ATSFontGetFileReference( ats_font_id, ats_font_ref );
#endif
return err;
}
static FT_Error
FT_GetFileRef_From_Mac_ATS_Name( const char* fontName,
FSRef* ats_font_ref,
FT_Long* face_index )
{
CFStringRef cf_fontName;
ATSFontRef ats_font_id;
*face_index = 0;
cf_fontName = CFStringCreateWithCString( NULL, fontName,
kCFStringEncodingMacRoman );
ats_font_id = ATSFontFindFromName( cf_fontName,
kATSOptionFlagsUnRestrictedScope );
CFRelease( cf_fontName );
if ( ats_font_id == 0 || ats_font_id == 0xFFFFFFFFUL )
return FT_Err_Unknown_File_Format;
if ( noErr != FT_ATSFontGetFileReference( ats_font_id, ats_font_ref ) )
return FT_Err_Unknown_File_Format;
/* face_index calculation by searching preceding fontIDs */
/* with same FSRef */
{
ATSFontRef id2 = ats_font_id - 1;
FSRef ref2;
while ( id2 > 0 )
{
if ( noErr != FT_ATSFontGetFileReference( id2, &ref2 ) )
break;
if ( noErr != FSCompareFSRefs( ats_font_ref, &ref2 ) )
break;
id2--;
}
*face_index = ats_font_id - ( id2 + 1 );
}
return FT_Err_Ok;
}
#endif
#if !HAVE_ATS
FT_EXPORT_DEF( FT_Error )
FT_GetFilePath_From_Mac_ATS_Name( const char* fontName,
UInt8* path,
UInt32 maxPathSize,
FT_Long* face_index )
{
FT_UNUSED( fontName );
FT_UNUSED( path );
FT_UNUSED( maxPathSize );
FT_UNUSED( face_index );
return FT_Err_Unimplemented_Feature;
}
#else
FT_EXPORT_DEF( FT_Error )
FT_GetFilePath_From_Mac_ATS_Name( const char* fontName,
UInt8* path,
UInt32 maxPathSize,
FT_Long* face_index )
{
FSRef ref;
FT_Error err;
err = FT_GetFileRef_From_Mac_ATS_Name( fontName, &ref, face_index );
if ( FT_Err_Ok != err )
return err;
if ( noErr != FSRefMakePath( &ref, path, maxPathSize ) )
return FT_Err_Unknown_File_Format;
return FT_Err_Ok;
}
#endif /* HAVE_ATS */
#if !HAVE_FSSPEC || !HAVE_ATS
FT_EXPORT_DEF( FT_Error )
FT_GetFile_From_Mac_ATS_Name( const char* fontName,
FSSpec* pathSpec,
FT_Long* face_index )
{
FT_UNUSED( fontName );
FT_UNUSED( pathSpec );
FT_UNUSED( face_index );
return FT_Err_Unimplemented_Feature;
}
#else
/* This function is deprecated because FSSpec is deprecated in Mac OS X. */
FT_EXPORT_DEF( FT_Error )
FT_GetFile_From_Mac_ATS_Name( const char* fontName,
FSSpec* pathSpec,
FT_Long* face_index )
{
FSRef ref;
FT_Error err;
err = FT_GetFileRef_From_Mac_ATS_Name( fontName, &ref, face_index );
if ( FT_Err_Ok != err )
return err;
if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoNone, NULL, NULL,
pathSpec, NULL ) )
return FT_Err_Unknown_File_Format;
return FT_Err_Ok;
}
#endif
#if defined( __MWERKS__ ) && !TARGET_RT_MAC_MACHO
#define STREAM_FILE( stream ) ( (FT_FILE*)stream->descriptor.pointer )
FT_CALLBACK_DEF( void )
ft_FSp_stream_close( FT_Stream stream )
{
ft_fclose( STREAM_FILE( stream ) );
stream->descriptor.pointer = NULL;
stream->size = 0;
stream->base = 0;
}
FT_CALLBACK_DEF( unsigned long )
ft_FSp_stream_io( FT_Stream stream,
unsigned long offset,
unsigned char* buffer,
unsigned long count )
{
FT_FILE* file;
file = STREAM_FILE( stream );
ft_fseek( file, offset, SEEK_SET );
return (unsigned long)ft_fread( buffer, 1, count, file );
}
#endif /* __MWERKS__ && !TARGET_RT_MAC_MACHO */
#if HAVE_FSSPEC && !HAVE_FSREF
/* isDirectory is a dummy to synchronize API with FSPathMakeRef() */
static OSErr
FT_FSPathMakeSpec( const UInt8* pathname,
FSSpec* spec_p,
Boolean isDirectory )
{
const char *p, *q;
short vRefNum;
long dirID;
Str255 nodeName;
OSErr err;
FT_UNUSED( isDirectory );
p = q = (const char *)pathname;
dirID = 0;
vRefNum = 0;
while ( 1 )
{
int len = ft_strlen( p );
if ( len > 255 )
len = 255;
q = p + len;
if ( q == p )
return 0;
if ( 255 < ft_strlen( (char *)pathname ) )
{
while ( p < q && *q != ':' )
q--;
}
if ( p < q )
*(char *)nodeName = q - p;
else if ( ft_strlen( p ) < 256 )
*(char *)nodeName = ft_strlen( p );
else
return errFSNameTooLong;
ft_strncpy( (char *)nodeName + 1, (char *)p, *(char *)nodeName );
err = FSMakeFSSpec( vRefNum, dirID, nodeName, spec_p );
if ( err || '\0' == *q )
return err;
vRefNum = spec_p->vRefNum;
dirID = spec_p->parID;
p = q;
}
}
static OSErr
FT_FSpMakePath( const FSSpec* spec_p,
UInt8* path,
UInt32 maxPathSize )
{
OSErr err;
FSSpec spec = *spec_p;
short vRefNum;
long dirID;
Str255 parDir_name;
FT_MEM_SET( path, 0, maxPathSize );
while ( 1 )
{
int child_namelen = ft_strlen( (char *)path );
unsigned char node_namelen = spec.name[0];
unsigned char* node_name = spec.name + 1;
if ( node_namelen + child_namelen > maxPathSize )
return errFSNameTooLong;
FT_MEM_MOVE( path + node_namelen + 1, path, child_namelen );
FT_MEM_COPY( path, node_name, node_namelen );
if ( child_namelen > 0 )
path[node_namelen] = ':';
vRefNum = spec.vRefNum;
dirID = spec.parID;
parDir_name[0] = '\0';
err = FSMakeFSSpec( vRefNum, dirID, parDir_name, &spec );
if ( noErr != err || dirID == spec.parID )
break;
}
return noErr;
}
#endif /* HAVE_FSSPEC && !HAVE_FSREF */
static OSErr
FT_FSPathMakeRes( const UInt8* pathname,
ResFileRefNum* res )
{
#if HAVE_FSREF
OSErr err;
FSRef ref;
if ( noErr != FSPathMakeRef( pathname, &ref, FALSE ) )
return FT_Err_Cannot_Open_Resource;
/* at present, no support for dfont format */
err = FSOpenResourceFile( &ref, 0, NULL, fsRdPerm, res );
if ( noErr == err )
return err;
/* fallback to original resource-fork font */
*res = FSOpenResFile( &ref, fsRdPerm );
err = ResError();
#else
OSErr err;
FSSpec spec;
if ( noErr != FT_FSPathMakeSpec( pathname, &spec, FALSE ) )
return FT_Err_Cannot_Open_Resource;
/* at present, no support for dfont format without FSRef */
/* (see above), try original resource-fork font */
*res = FSpOpenResFile( &spec, fsRdPerm );
err = ResError();
#endif /* HAVE_FSREF */
return err;
}
/* Return the file type for given pathname */
static OSType
get_file_type_from_path( const UInt8* pathname )
{
#if HAVE_FSREF
FSRef ref;
FSCatalogInfo info;
if ( noErr != FSPathMakeRef( pathname, &ref, FALSE ) )
return ( OSType ) 0;
if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoFinderInfo, &info,
NULL, NULL, NULL ) )
return ( OSType ) 0;
return ((FInfo *)(info.finderInfo))->fdType;
#else
FSSpec spec;
FInfo finfo;
if ( noErr != FT_FSPathMakeSpec( pathname, &spec, FALSE ) )
return ( OSType ) 0;
if ( noErr != FSpGetFInfo( &spec, &finfo ) )
return ( OSType ) 0;
return finfo.fdType;
#endif /* HAVE_FSREF */
}
/* 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 ( ft_isupper( *q ) )
{
if ( count )
max = 3;
count = 0;
}
if ( count < max && ( ft_isalnum( *q ) || *q == '_' ) )
{
*++p = *q;
lwfn_file_name[0]++;
count++;
}
q++;
}
}
static short
count_faces_sfnt( char* fond_data )
{
/* The count is 1 greater than the value in the FOND. */
/* Isn't that cute? :-) */
return EndianS16_BtoN( *( (short*)( fond_data +
sizeof ( FamRec ) ) ) ) + 1;
}
static short
count_faces_scalable( char* fond_data )
{
AsscEntry* assoc;
FamRec* fond;
short i, face, face_all;
fond = (FamRec*)fond_data;
face_all = EndianS16_BtoN( *( (short *)( fond_data +
sizeof ( FamRec ) ) ) ) + 1;
assoc = (AsscEntry*)( fond_data + sizeof ( FamRec ) + 2 );
face = 0;
for ( i = 0; i < face_all; i++ )
{
if ( 0 == EndianS16_BtoN( assoc[i].fontSize ) )
face++;
}
return face;
}
/* Look inside the FOND data, answer whether there should be an SFNT
resource, and answer the name of a possible LWFN Type 1 file.
Thanks to Paul Miller (paulm@profoundeffects.com) for the fix
to load a face OTHER than the first one in the FOND!
*/
static void
parse_fond( char* fond_data,
short* have_sfnt,
ResID* sfnt_id,
Str255 lwfn_file_name,
short face_index )
{
AsscEntry* assoc;
AsscEntry* base_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 );
base_assoc = assoc;
/* the maximum faces in a FOND is 48, size of StyleTable.indexes[] */
if ( 47 < face_index )
return;
/* Let's do a little range checking before we get too excited here */
if ( face_index < count_faces_sfnt( fond_data ) )
{
assoc += face_index; /* add on the face_index! */
/* if the face at this index is not scalable,
fall back to the first one (old behavior) */
if ( EndianS16_BtoN( assoc->fontSize ) == 0 )
{
*have_sfnt = 1;
*sfnt_id = EndianS16_BtoN( assoc->fontID );
}
else if ( base_assoc->fontSize == 0 )
{
*have_sfnt = 1;
*sfnt_id = EndianS16_BtoN( base_assoc->fontID );
}
}
if ( EndianS32_BtoN( fond->ffStylOff ) )
{
unsigned char* p = (unsigned char*)fond_data;
StyleTable* style;
unsigned short string_count;
char ps_name[256];
unsigned char* names[64];
int i;
p += EndianS32_BtoN( fond->ffStylOff );
style = (StyleTable*)p;
p += sizeof ( StyleTable );
string_count = EndianS16_BtoN( *(short*)(p) );
p += sizeof ( short );
for ( i = 0; i < string_count && i < 64; i++ )
{
names[i] = p;
p += names[i][0];
p++;
}
{
size_t ps_name_len = (size_t)names[0][0];
if ( ps_name_len != 0 )
{
ft_memcpy(ps_name, names[0] + 1, ps_name_len);
ps_name[ps_name_len] = 0;
}
if ( style->indexes[face_index] > 1 &&
style->indexes[face_index] <= FT_MIN( string_count, 64 ) )
{
unsigned char* suffixes = names[style->indexes[face_index] - 1];
for ( i = 1; i <= suffixes[0]; i++ )
{
unsigned char* s;
size_t j = suffixes[i] - 1;
if ( j < string_count && ( s = names[j] ) != NULL )
{
size_t s_len = (size_t)s[0];
if ( s_len != 0 && ps_name_len + s_len < sizeof ( ps_name ) )
{
ft_memcpy( ps_name + ps_name_len, s + 1, s_len );
ps_name_len += s_len;
ps_name[ps_name_len] = 0;
}
}
}
}
}
create_lwfn_name( ps_name, lwfn_file_name );
}
}
static FT_Error
lookup_lwfn_by_fond( const UInt8* path_fond,
ConstStr255Param base_lwfn,
UInt8* path_lwfn,
int path_size )
{
#if HAVE_FSREF
FSRef ref, par_ref;
int dirname_len;
/* Pathname for FSRef can be in various formats: HFS, HFS+, and POSIX. */
/* We should not extract parent directory by string manipulation. */
if ( noErr != FSPathMakeRef( path_fond, &ref, FALSE ) )
return FT_Err_Invalid_Argument;
if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoNone,
NULL, NULL, NULL, &par_ref ) )
return FT_Err_Invalid_Argument;
if ( noErr != FSRefMakePath( &par_ref, path_lwfn, path_size ) )
return FT_Err_Invalid_Argument;
if ( ft_strlen( (char *)path_lwfn ) + 1 + base_lwfn[0] > path_size )
return FT_Err_Invalid_Argument;
/* now we have absolute dirname in path_lwfn */
if ( path_lwfn[0] == '/' )
ft_strcat( (char *)path_lwfn, "/" );
else
ft_strcat( (char *)path_lwfn, ":" );
dirname_len = ft_strlen( (char *)path_lwfn );
ft_strcat( (char *)path_lwfn, (char *)base_lwfn + 1 );
path_lwfn[dirname_len + base_lwfn[0]] = '\0';
if ( noErr != FSPathMakeRef( path_lwfn, &ref, FALSE ) )
return FT_Err_Cannot_Open_Resource;
if ( noErr != FSGetCatalogInfo( &ref, kFSCatInfoNone,
NULL, NULL, NULL, NULL ) )
return FT_Err_Cannot_Open_Resource;
return FT_Err_Ok;
#else
int i;
FSSpec spec;
/* pathname for FSSpec is always HFS format */
if ( ft_strlen( (char *)path_fond ) > path_size )
return FT_Err_Invalid_Argument;
ft_strcpy( (char *)path_lwfn, (char *)path_fond );
i = ft_strlen( (char *)path_lwfn ) - 1;
while ( i > 0 && ':' != path_lwfn[i] )
i--;
if ( i + 1 + base_lwfn[0] > path_size )
return FT_Err_Invalid_Argument;
if ( ':' == path_lwfn[i] )
{
ft_strcpy( (char *)path_lwfn + i + 1, (char *)base_lwfn + 1 );
path_lwfn[i + 1 + base_lwfn[0]] = '\0';
}
else
{
ft_strcpy( (char *)path_lwfn, (char *)base_lwfn + 1 );
path_lwfn[base_lwfn[0]] = '\0';
}
if ( noErr != FT_FSPathMakeSpec( path_lwfn, &spec, FALSE ) )
return FT_Err_Cannot_Open_Resource;
return FT_Err_Ok;
#endif /* HAVE_FSREF */
}
static short
count_faces( Handle fond,
const UInt8* pathname )
{
ResID sfnt_id;
short have_sfnt, have_lwfn;
Str255 lwfn_file_name;
UInt8 buff[PATH_MAX];
FT_Error err;
short num_faces;
have_sfnt = have_lwfn = 0;
HLock( fond );
parse_fond( *fond, &have_sfnt, &sfnt_id, lwfn_file_name, 0 );
if ( lwfn_file_name[0] )
{
err = lookup_lwfn_by_fond( pathname, lwfn_file_name,
buff, sizeof ( buff ) );
if ( FT_Err_Ok == err )
have_lwfn = 1;
}
if ( have_lwfn && ( !have_sfnt || PREFER_LWFN ) )
num_faces = 1;
else
num_faces = count_faces_scalable( *fond );
HUnlock( fond );
return num_faces;
}
/* 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 glue chunks
of the same type together. */
static FT_Error
read_lwfn( FT_Memory memory,
ResFileRefNum res,
FT_Byte** pfb_data,
FT_ULong* size )
{
FT_Error error = FT_Err_Ok;
ResID res_id;
unsigned char *buffer, *p, *size_p = NULL;
FT_ULong total_size = 0;
FT_ULong old_total_size = 0;
FT_ULong post_size, pfb_chunk_size;
Handle post_data;
char code, last_code;
UseResFile( res );
/* First pass: load all POST resources, and determine the size of */
/* the output buffer. */
res_id = 501;
last_code = -1;
for (;;)
{
post_data = Get1Resource( FT_MAKE_TAG( 'P', 'O', 'S', 'T' ),
res_id++ );
if ( post_data == NULL )
break; /* we are 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;
/* detect integer overflows */
if ( total_size < old_total_size )
{
error = FT_Err_Array_Too_Large;
goto Error;
}
old_total_size = total_size;
}
if ( FT_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( FT_MAKE_TAG( 'P', 'O', 'S', 'T' ),
res_id++ );
if ( post_data == NULL )
break; /* we are done */
post_size = (FT_ULong)GetHandleSize( post_data ) - 2;
code = (*post_data)[0];
if ( code != last_code )
{
if ( last_code != -1 )
{
/* we are done adding a chunk, fill in the size field */
if ( size_p != NULL )
{
*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 */
}
}
ft_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 );
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;
FT_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_CloseFunc 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 ( FT_NEW( stream ) )
goto Exit;
FT_Stream_OpenMemory( stream, base, size );
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 )
{
FT_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 );
}
/* At this point, face_index has served its purpose; */
/* whoever calls this function has already used it to */
/* locate the correct font data. We should not propagate */
/* this index to FT_Open_Face() (unless it is negative). */
if ( face_index > 0 )
face_index = 0;
error = FT_Open_Face( library, &args, face_index, aface );
if ( error == FT_Err_Ok )
(*aface)->face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM;
else
FT_Stream_Free( stream, 0 );
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,
const UInt8* pathname,
FT_Long face_index,
FT_Face* aface )
{
FT_Byte* pfb_data;
FT_ULong pfb_size;
FT_Error error;
ResFileRefNum res;
if ( noErr != FT_FSPathMakeRes( pathname, &res ) )
return FT_Err_Cannot_Open_Resource;
pfb_data = NULL;
pfb_size = 0;
error = read_lwfn( library->memory, res, &pfb_data, &pfb_size );
CloseResFile( res ); /* PFB is already loaded, useless anymore */
if ( error )
return error;
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,
ResID sfnt_id,
FT_Long face_index,
FT_Face* aface )
{
Handle sfnt = NULL;
FT_Byte* sfnt_data;
size_t sfnt_size;
FT_Error error = FT_Err_Ok;
FT_Memory memory = library->memory;
int is_cff;
sfnt = GetResource( FT_MAKE_TAG( 's', 'f', 'n', 't' ), sfnt_id );
if ( sfnt == NULL )
return FT_Err_Invalid_Handle;
sfnt_size = (FT_ULong)GetHandleSize( sfnt );
if ( FT_ALLOC( sfnt_data, (FT_Long)sfnt_size ) )
{
ReleaseResource( sfnt );
return error;
}
HLock( sfnt );
ft_memcpy( sfnt_data, *sfnt, sfnt_size );
HUnlock( sfnt );
ReleaseResource( sfnt );
is_cff = sfnt_size > 4 && sfnt_data[0] == 'O' &&
sfnt_data[1] == 'T' &&
sfnt_data[2] == 'T' &&
sfnt_data[3] == 'O';
return open_face_from_buffer( library,
sfnt_data,
sfnt_size,
face_index,
is_cff ? "cff" : "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,
const UInt8* pathname,
FT_Long face_index,
FT_Face* aface )
{
FT_Error error = FT_Err_Cannot_Open_Resource;
ResFileRefNum res_ref;
ResourceIndex res_index;
Handle fond;
short num_faces_in_res, num_faces_in_fond;
if ( noErr != FT_FSPathMakeRes( pathname, &res_ref ) )
return FT_Err_Cannot_Open_Resource;
UseResFile( res_ref );
if ( ResError() )
return FT_Err_Cannot_Open_Resource;
num_faces_in_res = 0;
for ( res_index = 1; ; ++res_index )
{
fond = Get1IndResource( FT_MAKE_TAG( 'F', 'O', 'N', 'D' ),
res_index );
if ( ResError() )
break;
num_faces_in_fond = count_faces( fond, pathname );
num_faces_in_res += num_faces_in_fond;
if ( 0 <= face_index && face_index < num_faces_in_fond && error )
error = FT_New_Face_From_FOND( library, fond, face_index, aface );
face_index -= num_faces_in_fond;
}
CloseResFile( res_ref );
if ( FT_Err_Ok == error && NULL != aface )
(*aface)->num_faces = num_faces_in_res;
return error;
}
/* documentation is 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 have_sfnt, have_lwfn = 0;
ResID sfnt_id, fond_id;
OSType fond_type;
Str255 fond_name;
Str255 lwfn_file_name;
UInt8 path_lwfn[PATH_MAX];
OSErr err;
FT_Error error = FT_Err_Ok;
GetResInfo( fond, &fond_id, &fond_type, fond_name );
if ( ResError() != noErr ||
fond_type != FT_MAKE_TAG( 'F', 'O', 'N', 'D' ) )
return FT_Err_Invalid_File_Format;
HLock( fond );
parse_fond( *fond, &have_sfnt, &sfnt_id, lwfn_file_name, face_index );
HUnlock( fond );
if ( lwfn_file_name[0] )
{
ResFileRefNum res;
res = HomeResFile( fond );
if ( noErr != ResError() )
goto found_no_lwfn_file;
#if HAVE_FSREF
{
UInt8 path_fond[PATH_MAX];
FSRef ref;
err = FSGetForkCBInfo( res, kFSInvalidVolumeRefNum,
NULL, NULL, NULL, &ref, NULL );
if ( noErr != err )
goto found_no_lwfn_file;
err = FSRefMakePath( &ref, path_fond, sizeof ( path_fond ) );
if ( noErr != err )
goto found_no_lwfn_file;
error = lookup_lwfn_by_fond( path_fond, lwfn_file_name,
path_lwfn, sizeof ( path_lwfn ) );
if ( FT_Err_Ok == error )
have_lwfn = 1;
}
#elif HAVE_FSSPEC
{
UInt8 path_fond[PATH_MAX];
FCBPBRec pb;
Str255 fond_file_name;
FSSpec spec;
FT_MEM_SET( &spec, 0, sizeof ( FSSpec ) );
FT_MEM_SET( &pb, 0, sizeof ( FCBPBRec ) );
pb.ioNamePtr = fond_file_name;
pb.ioVRefNum = 0;
pb.ioRefNum = res;
pb.ioFCBIndx = 0;
err = PBGetFCBInfoSync( &pb );
if ( noErr != err )
goto found_no_lwfn_file;
err = FSMakeFSSpec( pb.ioFCBVRefNum, pb.ioFCBParID,
fond_file_name, &spec );
if ( noErr != err )
goto found_no_lwfn_file;
err = FT_FSpMakePath( &spec, path_fond, sizeof ( path_fond ) );
if ( noErr != err )
goto found_no_lwfn_file;
error = lookup_lwfn_by_fond( path_fond, lwfn_file_name,
path_lwfn, sizeof ( path_lwfn ) );
if ( FT_Err_Ok == error )
have_lwfn = 1;
}
#endif /* HAVE_FSREF, HAVE_FSSPEC */
}
if ( have_lwfn && ( !have_sfnt || PREFER_LWFN ) )
error = FT_New_Face_From_LWFN( library,
path_lwfn,
face_index,
aface );
else
error = FT_Err_Unknown_File_Format;
found_no_lwfn_file:
if ( have_sfnt && FT_Err_Ok != error )
error = FT_New_Face_From_SFNT( library,
sfnt_id,
face_index,
aface );
return error;
}
/* Common function to load a new FT_Face from a resource file. */
static FT_Error
FT_New_Face_From_Resource( FT_Library library,
const UInt8* pathname,
FT_Long face_index,
FT_Face* aface )
{
OSType file_type;
FT_Error error;
/* LWFN is a (very) specific file format, check for it explicitly */
file_type = get_file_type_from_path( pathname );
if ( file_type == FT_MAKE_TAG( 'L', 'W', 'F', 'N' ) )
return FT_New_Face_From_LWFN( library, pathname, face_index, aface );
/* Otherwise the file type doesn't matter (there are more than */
/* `FFIL' and `tfil'). Just try opening it as a font suitcase; */
/* if it works, fine. */
error = FT_New_Face_From_Suitcase( library, pathname, face_index, aface );
if ( error == 0 )
return error;
/* let it fall through to normal loader (.ttf, .otf, etc.); */
/* we signal this by returning no error and no FT_Face */
*aface = NULL;
return 0;
}
/*************************************************************************/
/* */
/* <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;
FT_Error error;
/* test for valid `library' and `aface' delayed to FT_Open_Face() */
if ( !pathname )
return FT_Err_Invalid_Argument;
error = FT_Err_Ok;
*aface = NULL;
/* try resourcefork based font: LWFN, FFIL */
error = FT_New_Face_From_Resource( library, (UInt8 *)pathname,
face_index, aface );
if ( error != 0 || *aface != NULL )
return error;
/* let it fall through to normal loader (.ttf, .otf, etc.) */
args.flags = FT_OPEN_PATHNAME;
args.pathname = (char*)pathname;
return FT_Open_Face( library, &args, face_index, aface );
}
/*************************************************************************/
/* */
/* <Function> */
/* FT_New_Face_From_FSRef */
/* */
/* <Description> */
/* FT_New_Face_From_FSRef is identical to FT_New_Face except it */
/* accepts an FSRef instead of a path. */
/* */
/* This function is deprecated because Carbon data types (FSRef) */
/* are not cross-platform, and thus not suitable for the freetype API. */
FT_EXPORT_DEF( FT_Error )
FT_New_Face_From_FSRef( FT_Library library,
const FSRef* ref,
FT_Long face_index,
FT_Face* aface )
{
#if !HAVE_FSREF
FT_UNUSED( library );
FT_UNUSED( ref );
FT_UNUSED( face_index );
FT_UNUSED( aface );
return FT_Err_Unimplemented_Feature;
#else
FT_Error error;
FT_Open_Args args;
OSErr err;
UInt8 pathname[PATH_MAX];
if ( !ref )
return FT_Err_Invalid_Argument;
err = FSRefMakePath( ref, pathname, sizeof ( pathname ) );
if ( err )
error = FT_Err_Cannot_Open_Resource;
error = FT_New_Face_From_Resource( library, pathname, face_index, aface );
if ( error != 0 || *aface != NULL )
return error;
/* fallback to datafork font */
args.flags = FT_OPEN_PATHNAME;
args.pathname = (char*)pathname;
return FT_Open_Face( library, &args, face_index, aface );
#endif /* HAVE_FSREF */
}
/*************************************************************************/
/* */
/* <Function> */
/* FT_New_Face_From_FSSpec */
/* */
/* <Description> */
/* FT_New_Face_From_FSSpec is identical to FT_New_Face except it */
/* accepts an FSSpec instead of a path. */
/* */
/* This function is deprecated because Carbon data types (FSSpec) */
/* are not cross-platform, and thus not suitable for the freetype API. */
FT_EXPORT_DEF( FT_Error )
FT_New_Face_From_FSSpec( FT_Library library,
const FSSpec* spec,
FT_Long face_index,
FT_Face* aface )
{
#if HAVE_FSREF
FSRef ref;
if ( !spec || FSpMakeFSRef( spec, &ref ) != noErr )
return FT_Err_Invalid_Argument;
else
return FT_New_Face_From_FSRef( library, &ref, face_index, aface );
#elif HAVE_FSSPEC
FT_Error error;
FT_Open_Args args;
OSErr err;
UInt8 pathname[PATH_MAX];
if ( !spec )
return FT_Err_Invalid_Argument;
err = FT_FSpMakePath( spec, pathname, sizeof ( pathname ) );
if ( err )
error = FT_Err_Cannot_Open_Resource;
error = FT_New_Face_From_Resource( library, pathname, face_index, aface );
if ( error != 0 || *aface != NULL )
return error;
/* fallback to datafork font */
args.flags = FT_OPEN_PATHNAME;
args.pathname = (char*)pathname;
return FT_Open_Face( library, &args, face_index, aface );
#else
FT_UNUSED( library );
FT_UNUSED( spec );
FT_UNUSED( face_index );
FT_UNUSED( aface );
return FT_Err_Unimplemented_Feature;
#endif /* HAVE_FSREF, HAVE_FSSPEC */
}
/* END */
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