+++ /dev/null
-/***************************************************************************/
-/* */
-/* cffobjs.c */
-/* */
-/* OpenType objects manager (body). */
-/* */
-/* Copyright 1996-2001 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_DEBUG_H
-#include FT_INTERNAL_CALC_H
-#include FT_INTERNAL_STREAM_H
-#include FT_ERRORS_H
-#include FT_TRUETYPE_IDS_H
-#include FT_TRUETYPE_TAGS_H
-#include FT_INTERNAL_SFNT_H
-#include FT_INTERNAL_POSTSCRIPT_NAMES_H
-#include "cffobjs.h"
-#include "cffload.h"
-
-#include "cfferrs.h"
-
-#include <string.h> /* for strlen() */
-
-
- /*************************************************************************/
- /* */
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
- /* messages during execution. */
- /* */
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_cffobjs
-
-
- /*************************************************************************/
- /* */
- /* FACE FUNCTIONS */
- /* */
- /*************************************************************************/
-
- static FT_String*
- CFF_StrCopy( FT_Memory memory,
- const FT_String* source )
- {
- FT_Error error;
- FT_String* result = 0;
- FT_Int len = (FT_Int)strlen( source );
-
-
- if ( !ALLOC( result, len + 1 ) )
- {
- MEM_Copy( result, source, len );
- result[len] = 0;
- }
- return result;
- }
-
-
-#if 0
-
- /* this function is used to build a Unicode charmap from the glyph names */
- /* in a file */
- static FT_Error
- CFF_Build_Unicode_Charmap( CFF_Face face,
- FT_ULong base_offset,
- PSNames_Interface* psnames )
- {
- CFF_Font* font = (CFF_Font*)face->extra.data;
- FT_Memory memory = FT_FACE_MEMORY(face);
- FT_UInt n, num_glyphs = face->root.num_glyphs;
- const char** glyph_names;
- FT_Error error;
- CFF_Font_Dict* dict = &font->top_font.font_dict;
- FT_ULong charset_offset;
- FT_Byte format;
- FT_Stream stream = face->root.stream;
-
-
- charset_offset = dict->charset_offset;
- if ( !charset_offset )
- {
- FT_ERROR(( "CFF_Build_Unicode_Charmap: charset table is missing\n" ));
- error = CFF_Err_Invalid_File_Format;
- goto Exit;
- }
-
- /* allocate the charmap */
- if ( ALLOC( face->charmap, ...
-
- /* seek to charset table and allocate glyph names table */
- if ( FILE_Seek( base_offset + charset_offset ) ||
- ALLOC_ARRAY( glyph_names, num_glyphs, const char* ) )
- goto Exit;
-
- /* now, read each glyph name and store it in the glyph name table */
- if ( READ_Byte( format ) )
- goto Fail;
-
- switch ( format )
- {
- case 0: /* format 0 - one SID per glyph */
- {
- const char** gname = glyph_names;
- const char** limit = gname + num_glyphs;
-
-
- if ( ACCESS_Frame( num_glyphs * 2 ) )
- goto Fail;
-
- for ( ; gname < limit; gname++ )
- gname[0] = CFF_Get_String( &font->string_index,
- GET_UShort(),
- psnames );
- FORGET_Frame();
- break;
- }
-
- case 1: /* format 1 - sequential ranges */
- case 2: /* format 2 - sequential ranges with 16-bit counts */
- {
- const char** gname = glyph_names;
- const char** limit = gname + num_glyphs;
- FT_UInt len = 3;
-
-
- if ( format == 2 )
- len++;
-
- while ( gname < limit )
- {
- FT_UInt first;
- FT_UInt count;
-
-
- if ( ACCESS_Frame( len ) )
- goto Fail;
-
- first = GET_UShort();
- if ( format == 3 )
- count = GET_UShort();
- else
- count = GET_Byte();
-
- FORGET_Frame();
-
- for ( ; count > 0; count-- )
- {
- gname[0] = CFF_Get_String( &font->string_index,
- first,
- psnames );
- gname++;
- first++;
- }
- }
- break;
- }
-
- default: /* unknown charset format! */
- FT_ERROR(( "CFF_Build_Unicode_Charmap: unknown charset format!\n" ));
- error = CFF_Err_Invalid_File_Format;
- goto Fail;
- }
-
- /* all right, the glyph names were loaded; we now need to create */
- /* the corresponding unicode charmap */
-
- Fail:
- for ( n = 0; n < num_glyphs; n++ )
- FREE( glyph_names[n] );
-
- FREE( glyph_names );
-
- Exit:
- return error;
- }
-
-#endif /* 0 */
-
-
- static FT_Encoding
- find_encoding( int platform_id,
- int encoding_id )
- {
- typedef struct TEncoding
- {
- int platform_id;
- int encoding_id;
- FT_Encoding encoding;
-
- } TEncoding;
-
- static
- const TEncoding tt_encodings[] =
- {
- { TT_PLATFORM_ISO, -1, ft_encoding_unicode },
-
- { TT_PLATFORM_APPLE_UNICODE, -1, ft_encoding_unicode },
-
- { TT_PLATFORM_MACINTOSH, TT_MAC_ID_ROMAN, ft_encoding_apple_roman },
-
- { TT_PLATFORM_MICROSOFT, TT_MS_ID_UNICODE_CS, ft_encoding_unicode },
- { TT_PLATFORM_MICROSOFT, TT_MS_ID_SJIS, ft_encoding_sjis },
- { TT_PLATFORM_MICROSOFT, TT_MS_ID_GB2312, ft_encoding_gb2312 },
- { TT_PLATFORM_MICROSOFT, TT_MS_ID_BIG_5, ft_encoding_big5 },
- { TT_PLATFORM_MICROSOFT, TT_MS_ID_WANSUNG, ft_encoding_wansung },
- { TT_PLATFORM_MICROSOFT, TT_MS_ID_JOHAB, ft_encoding_johab }
- };
-
- const TEncoding *cur, *limit;
-
-
- cur = tt_encodings;
- limit = cur + sizeof ( tt_encodings ) / sizeof ( tt_encodings[0] );
-
- for ( ; cur < limit; cur++ )
- {
- if ( cur->platform_id == platform_id )
- {
- if ( cur->encoding_id == encoding_id ||
- cur->encoding_id == -1 )
- return cur->encoding;
- }
- }
-
- return ft_encoding_none;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* CFF_Init_Face */
- /* */
- /* <Description> */
- /* Initializes a given OpenType face object. */
- /* */
- /* <Input> */
- /* stream :: The source font stream. */
- /* */
- /* face_index :: The index of the font face in the resource. */
- /* */
- /* num_params :: Number of additional generic parameters. Ignored. */
- /* */
- /* params :: Additional generic parameters. Ignored. */
- /* */
- /* <InOut> */
- /* face :: The newly built face object. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_LOCAL_DEF FT_Error
- CFF_Init_Face( FT_Stream stream,
- CFF_Face face,
- FT_Int face_index,
- FT_Int num_params,
- FT_Parameter* params )
- {
- FT_Error error;
- SFNT_Interface* sfnt;
- PSNames_Interface* psnames;
- FT_Bool pure_cff = 1;
- FT_Bool sfnt_format = 0;
-
-
- sfnt = (SFNT_Interface*)FT_Get_Module_Interface(
- face->root.driver->root.library, "sfnt" );
- if ( !sfnt )
- goto Bad_Format;
-
- psnames = (PSNames_Interface*)FT_Get_Module_Interface(
- face->root.driver->root.library, "psnames" );
-
- /* create input stream from resource */
- if ( FILE_Seek( 0 ) )
- goto Exit;
-
- /* check that we have a valid OpenType file */
- error = sfnt->init_face( stream, face, face_index, num_params, params );
- if ( !error )
- {
- if ( face->format_tag != 0x4F54544FL ) /* `OTTO'; OpenType/CFF font */
- {
- FT_TRACE2(( "[not a valid OpenType/CFF font]\n" ));
- goto Bad_Format;
- }
-
- /* if we are performing a simple font format check, exit immediately */
- if ( face_index < 0 )
- return CFF_Err_Ok;
-
- sfnt_format = 1;
-
- /* now, the font can be either an OpenType/CFF font, or an SVG CEF */
- /* font in the later case; it doesn't have a `head' table */
- error = face->goto_table( face, TTAG_head, stream, 0 );
- if ( !error )
- {
- pure_cff = 0;
-
- /* load font directory */
- error = sfnt->load_face( stream, face,
- face_index, num_params, params );
- if ( error )
- goto Exit;
- }
- else
- {
- /* load the `cmap' table by hand */
- error = sfnt->load_charmaps( face, stream );
- if ( error )
- goto Exit;
-
- /* XXX: we don't load the GPOS table, as OpenType Layout */
- /* support will be added later to a layout library on top of */
- /* FreeType 2 */
- }
-
- /* now, load the CFF part of the file */
- error = face->goto_table( face, TTAG_CFF, stream, 0 );
- if ( error )
- goto Exit;
- }
- else
- {
- /* rewind to start of file; we are going to load a pure-CFF font */
- if ( FILE_Seek( 0 ) )
- goto Exit;
- error = CFF_Err_Ok;
- }
-
- /* now load and parse the CFF table in the file */
- {
- CFF_Font* cff;
- FT_Memory memory = face->root.memory;
- FT_Face root;
- FT_UInt flags;
-
-
- if ( ALLOC( cff, sizeof ( *cff ) ) )
- goto Exit;
-
- face->extra.data = cff;
- error = CFF_Load_Font( stream, face_index, cff );
- if ( error )
- goto Exit;
-
- /* Complement the root flags with some interesting information. */
- /* Note that this is only necessary for pure CFF and CEF fonts. */
-
- root = &face->root;
- if ( pure_cff )
- {
- CFF_Font_Dict* dict = &cff->top_font.font_dict;
-
-
- /* we need the `PSNames' module for pure-CFF and CEF formats */
- if ( !psnames )
- {
- FT_ERROR(( "CFF_Init_Face:" ));
- FT_ERROR(( " cannot open CFF & CEF fonts\n" ));
- FT_ERROR(( " " ));
- FT_ERROR(( " without the `PSNames' module\n" ));
- goto Bad_Format;
- }
-
- /* Set up num_faces. */
- root->num_faces = cff->num_faces;
-
- /* compute number of glyphs */
- if ( dict->cid_registry )
- root->num_glyphs = dict->cid_count;
- else
- root->num_glyphs = cff->charstrings_index.count;
-
- /* set global bbox, as well as EM size */
- root->bbox = dict->font_bbox;
- root->ascender = (FT_Short)( root->bbox.yMax >> 16 );
- root->descender = (FT_Short)( root->bbox.yMin >> 16 );
- root->height = (FT_Short)(
- ( ( root->ascender - root->descender ) * 12 ) / 10 );
-
- if ( dict->units_per_em )
- root->units_per_EM = dict->units_per_em;
- else
- root->units_per_EM = 1000;
-
- /* retrieve font family & style name */
- root->family_name = CFF_Get_Name( &cff->name_index, face_index );
- if ( dict->cid_registry )
- root->style_name = CFF_StrCopy( memory, "Regular" ); /* XXXX */
- else
- root->style_name = CFF_Get_String( &cff->string_index,
- dict->weight,
- psnames );
-
- /*******************************************************************/
- /* */
- /* Compute face flags. */
- /* */
- flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */
- FT_FACE_FLAG_HORIZONTAL; /* horizontal data */
-
- if ( sfnt_format )
- flags |= FT_FACE_FLAG_SFNT;
-
- /* fixed width font? */
- if ( dict->is_fixed_pitch )
- flags |= FT_FACE_FLAG_FIXED_WIDTH;
-
- /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */
-#if 0
- /* kerning available? */
- if ( face->kern_pairs )
- flags |= FT_FACE_FLAG_KERNING;
-#endif
-
-#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
- flags |= FT_FACE_FLAG_GLYPH_NAMES;
-#endif
-
- root->face_flags = flags;
-
- /*******************************************************************/
- /* */
- /* Compute style flags. */
- /* */
- flags = 0;
-
- if ( dict->italic_angle )
- flags |= FT_STYLE_FLAG_ITALIC;
-
- /* XXX: may not be correct */
- if ( cff->top_font.private_dict.force_bold )
- flags |= FT_STYLE_FLAG_BOLD;
-
- root->style_flags = flags;
-
- /* set the charmaps if any */
- if ( sfnt_format )
- {
- /*****************************************************************/
- /* */
- /* Polish the charmaps. */
- /* */
- /* Try to set the charmap encoding according to the platform & */
- /* encoding ID of each charmap. */
- /* */
- TT_CharMap charmap;
- FT_Int n;
-
-
- charmap = face->charmaps;
- root->num_charmaps = face->num_charmaps;
-
- /* allocate table of pointers */
- if ( ALLOC_ARRAY( root->charmaps, root->num_charmaps, FT_CharMap ) )
- goto Exit;
-
- for ( n = 0; n < root->num_charmaps; n++, charmap++ )
- {
- FT_Int platform = charmap->cmap.platformID;
- FT_Int encoding = charmap->cmap.platformEncodingID;
-
-
- charmap->root.face = (FT_Face)face;
- charmap->root.platform_id = (FT_UShort)platform;
- charmap->root.encoding_id = (FT_UShort)encoding;
- charmap->root.encoding = find_encoding( platform, encoding );
-
- /* now, set root->charmap with a unicode charmap */
- /* wherever available */
- if ( !root->charmap &&
- charmap->root.encoding == ft_encoding_unicode )
- root->charmap = (FT_CharMap)charmap;
-
- root->charmaps[n] = (FT_CharMap)charmap;
- }
- }
- }
- }
-
- Exit:
- return error;
-
- Bad_Format:
- error = CFF_Err_Unknown_File_Format;
- goto Exit;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* CFF_Done_Face */
- /* */
- /* <Description> */
- /* Finalizes a given face object. */
- /* */
- /* <Input> */
- /* face :: A pointer to the face object to destroy. */
- /* */
- FT_LOCAL_DEF void
- CFF_Done_Face( CFF_Face face )
- {
- FT_Memory memory = face->root.memory;
- SFNT_Interface* sfnt = (SFNT_Interface*)face->sfnt;
-
-
- if ( sfnt )
- sfnt->done_face( face );
-
- {
- CFF_Font* cff = (CFF_Font*)face->extra.data;
-
-
- if ( cff )
- {
- CFF_Done_Font( cff );
- FREE( face->extra.data );
- }
- }
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* CFF_Init_Driver */
- /* */
- /* <Description> */
- /* Initializes a given OpenType driver object. */
- /* */
- /* <Input> */
- /* driver :: A handle to the target driver object. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_LOCAL_DEF FT_Error
- CFF_Init_Driver( CFF_Driver driver )
- {
- /* init extension registry if needed */
-
-#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
-
- return TT_Init_Extensions( driver );
-
-#else
-
- FT_UNUSED( driver );
-
- return CFF_Err_Ok;
-
-#endif
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* CFF_Done_Driver */
- /* */
- /* <Description> */
- /* Finalizes a given OpenType driver. */
- /* */
- /* <Input> */
- /* driver :: A handle to the target OpenType driver. */
- /* */
- FT_LOCAL_DEF void
- CFF_Done_Driver( CFF_Driver driver )
- {
- /* destroy extensions registry if needed */
-
-#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
-
- TT_Done_Extensions( driver );
-
-#else
-
- FT_UNUSED( driver );
-
-#endif
- }
-
-
-/* END */
projects / rrdtool.git / blobdiff