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5172
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/***************************************************************************/
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/* */
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/* afmparse.c */
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/* */
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/* AFM parser (body). */
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/* */
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/* Copyright 2006, 2007, 2008, 2009, 2010 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_INTERNAL_POSTSCRIPT_AUX_H
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#include "afmparse.h"
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#include "psconv.h"
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#include "psauxerr.h"
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/***************************************************************************/
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/* */
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/* AFM_Stream */
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/* */
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/* The use of AFM_Stream is largely inspired by parseAFM.[ch] from t1lib. */
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/* */
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/* */
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enum
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{
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AFM_STREAM_STATUS_NORMAL,
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AFM_STREAM_STATUS_EOC,
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AFM_STREAM_STATUS_EOL,
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AFM_STREAM_STATUS_EOF
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};
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typedef struct AFM_StreamRec_
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{
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FT_Byte* cursor;
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FT_Byte* base;
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FT_Byte* limit;
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FT_Int status;
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} AFM_StreamRec;
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#ifndef EOF
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#define EOF -1
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#endif
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/* this works because empty lines are ignored */
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#define AFM_IS_NEWLINE( ch ) ( (ch) == '\r' || (ch) == '\n' )
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#define AFM_IS_EOF( ch ) ( (ch) == EOF || (ch) == '\x1a' )
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#define AFM_IS_SPACE( ch ) ( (ch) == ' ' || (ch) == '\t' )
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/* column separator; there is no `column' in the spec actually */
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#define AFM_IS_SEP( ch ) ( (ch) == ';' )
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#define AFM_GETC() \
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( ( (stream)->cursor < (stream)->limit ) ? *(stream)->cursor++ \
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: EOF )
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#define AFM_STREAM_KEY_BEGIN( stream ) \
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(char*)( (stream)->cursor - 1 )
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#define AFM_STREAM_KEY_LEN( stream, key ) \
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( (char*)(stream)->cursor - key - 1 )
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#define AFM_STATUS_EOC( stream ) \
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( (stream)->status >= AFM_STREAM_STATUS_EOC )
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#define AFM_STATUS_EOL( stream ) \
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( (stream)->status >= AFM_STREAM_STATUS_EOL )
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#define AFM_STATUS_EOF( stream ) \
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( (stream)->status >= AFM_STREAM_STATUS_EOF )
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static int
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afm_stream_skip_spaces( AFM_Stream stream )
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{
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int ch = 0; /* make stupid compiler happy */
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if ( AFM_STATUS_EOC( stream ) )
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return ';';
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while ( 1 )
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{
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ch = AFM_GETC();
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if ( !AFM_IS_SPACE( ch ) )
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break;
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}
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if ( AFM_IS_NEWLINE( ch ) )
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stream->status = AFM_STREAM_STATUS_EOL;
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else if ( AFM_IS_SEP( ch ) )
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stream->status = AFM_STREAM_STATUS_EOC;
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else if ( AFM_IS_EOF( ch ) )
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stream->status = AFM_STREAM_STATUS_EOF;
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return ch;
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}
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/* read a key or value in current column */
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static char*
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afm_stream_read_one( AFM_Stream stream )
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{
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char* str;
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int ch;
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afm_stream_skip_spaces( stream );
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if ( AFM_STATUS_EOC( stream ) )
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return NULL;
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str = AFM_STREAM_KEY_BEGIN( stream );
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while ( 1 )
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{
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ch = AFM_GETC();
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if ( AFM_IS_SPACE( ch ) )
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break;
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else if ( AFM_IS_NEWLINE( ch ) )
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{
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stream->status = AFM_STREAM_STATUS_EOL;
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break;
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}
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else if ( AFM_IS_SEP( ch ) )
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{
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stream->status = AFM_STREAM_STATUS_EOC;
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break;
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}
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else if ( AFM_IS_EOF( ch ) )
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{
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stream->status = AFM_STREAM_STATUS_EOF;
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break;
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}
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}
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return str;
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}
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/* read a string (i.e., read to EOL) */
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static char*
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afm_stream_read_string( AFM_Stream stream )
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{
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char* str;
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int ch;
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afm_stream_skip_spaces( stream );
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if ( AFM_STATUS_EOL( stream ) )
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return NULL;
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str = AFM_STREAM_KEY_BEGIN( stream );
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/* scan to eol */
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while ( 1 )
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{
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ch = AFM_GETC();
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if ( AFM_IS_NEWLINE( ch ) )
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{
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stream->status = AFM_STREAM_STATUS_EOL;
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break;
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}
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else if ( AFM_IS_EOF( ch ) )
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{
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stream->status = AFM_STREAM_STATUS_EOF;
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break;
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}
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}
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return str;
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}
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/*************************************************************************/
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/* */
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/* AFM_Parser */
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/* */
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/* */
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/* all keys defined in Ch. 7-10 of 5004.AFM_Spec.pdf */
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typedef enum AFM_Token_
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{
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AFM_TOKEN_ASCENDER,
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AFM_TOKEN_AXISLABEL,
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AFM_TOKEN_AXISTYPE,
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AFM_TOKEN_B,
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AFM_TOKEN_BLENDAXISTYPES,
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AFM_TOKEN_BLENDDESIGNMAP,
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AFM_TOKEN_BLENDDESIGNPOSITIONS,
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AFM_TOKEN_C,
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AFM_TOKEN_CC,
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AFM_TOKEN_CH,
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AFM_TOKEN_CAPHEIGHT,
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AFM_TOKEN_CHARWIDTH,
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AFM_TOKEN_CHARACTERSET,
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AFM_TOKEN_CHARACTERS,
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AFM_TOKEN_DESCENDER,
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AFM_TOKEN_ENCODINGSCHEME,
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AFM_TOKEN_ENDAXIS,
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AFM_TOKEN_ENDCHARMETRICS,
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AFM_TOKEN_ENDCOMPOSITES,
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AFM_TOKEN_ENDDIRECTION,
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AFM_TOKEN_ENDFONTMETRICS,
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AFM_TOKEN_ENDKERNDATA,
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AFM_TOKEN_ENDKERNPAIRS,
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AFM_TOKEN_ENDTRACKKERN,
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AFM_TOKEN_ESCCHAR,
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AFM_TOKEN_FAMILYNAME,
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AFM_TOKEN_FONTBBOX,
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AFM_TOKEN_FONTNAME,
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AFM_TOKEN_FULLNAME,
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AFM_TOKEN_ISBASEFONT,
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AFM_TOKEN_ISCIDFONT,
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AFM_TOKEN_ISFIXEDPITCH,
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AFM_TOKEN_ISFIXEDV,
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AFM_TOKEN_ITALICANGLE,
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AFM_TOKEN_KP,
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AFM_TOKEN_KPH,
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AFM_TOKEN_KPX,
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AFM_TOKEN_KPY,
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AFM_TOKEN_L,
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AFM_TOKEN_MAPPINGSCHEME,
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AFM_TOKEN_METRICSSETS,
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AFM_TOKEN_N,
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AFM_TOKEN_NOTICE,
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AFM_TOKEN_PCC,
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AFM_TOKEN_STARTAXIS,
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AFM_TOKEN_STARTCHARMETRICS,
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AFM_TOKEN_STARTCOMPOSITES,
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AFM_TOKEN_STARTDIRECTION,
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AFM_TOKEN_STARTFONTMETRICS,
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AFM_TOKEN_STARTKERNDATA,
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AFM_TOKEN_STARTKERNPAIRS,
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AFM_TOKEN_STARTKERNPAIRS0,
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AFM_TOKEN_STARTKERNPAIRS1,
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AFM_TOKEN_STARTTRACKKERN,
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AFM_TOKEN_STDHW,
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AFM_TOKEN_STDVW,
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AFM_TOKEN_TRACKKERN,
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AFM_TOKEN_UNDERLINEPOSITION,
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AFM_TOKEN_UNDERLINETHICKNESS,
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AFM_TOKEN_VV,
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AFM_TOKEN_VVECTOR,
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AFM_TOKEN_VERSION,
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AFM_TOKEN_W,
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AFM_TOKEN_W0,
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AFM_TOKEN_W0X,
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AFM_TOKEN_W0Y,
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AFM_TOKEN_W1,
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AFM_TOKEN_W1X,
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AFM_TOKEN_W1Y,
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AFM_TOKEN_WX,
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AFM_TOKEN_WY,
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AFM_TOKEN_WEIGHT,
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AFM_TOKEN_WEIGHTVECTOR,
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AFM_TOKEN_XHEIGHT,
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N_AFM_TOKENS,
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AFM_TOKEN_UNKNOWN
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} AFM_Token;
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static const char* const afm_key_table[N_AFM_TOKENS] =
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{
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"Ascender",
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"AxisLabel",
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"AxisType",
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"B",
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"BlendAxisTypes",
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"BlendDesignMap",
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"BlendDesignPositions",
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"C",
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"CC",
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"CH",
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"CapHeight",
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"CharWidth",
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"CharacterSet",
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"Characters",
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"Descender",
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"EncodingScheme",
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"EndAxis",
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"EndCharMetrics",
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"EndComposites",
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"EndDirection",
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"EndFontMetrics",
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"EndKernData",
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"EndKernPairs",
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"EndTrackKern",
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"EscChar",
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"FamilyName",
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"FontBBox",
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"FontName",
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"FullName",
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"IsBaseFont",
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"IsCIDFont",
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"IsFixedPitch",
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"IsFixedV",
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"ItalicAngle",
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"KP",
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"KPH",
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"KPX",
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319 |
"KPY",
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320 |
"L",
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321 |
"MappingScheme",
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"MetricsSets",
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323 |
"N",
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324 |
"Notice",
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325 |
"PCC",
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326 |
"StartAxis",
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327 |
"StartCharMetrics",
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328 |
"StartComposites",
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329 |
"StartDirection",
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330 |
"StartFontMetrics",
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331 |
"StartKernData",
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332 |
"StartKernPairs",
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333 |
"StartKernPairs0",
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334 |
"StartKernPairs1",
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335 |
"StartTrackKern",
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336 |
"StdHW",
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337 |
"StdVW",
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338 |
"TrackKern",
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339 |
"UnderlinePosition",
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340 |
"UnderlineThickness",
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341 |
"VV",
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342 |
"VVector",
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343 |
"Version",
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344 |
"W",
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345 |
"W0",
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346 |
"W0X",
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347 |
"W0Y",
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348 |
"W1",
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349 |
"W1X",
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350 |
"W1Y",
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351 |
"WX",
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352 |
"WY",
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353 |
"Weight",
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354 |
"WeightVector",
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355 |
"XHeight"
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356 |
};
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357 |
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358 |
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359 |
/*
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360 |
* `afm_parser_read_vals' and `afm_parser_next_key' provide
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361 |
* high-level operations to an AFM_Stream. The rest of the
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362 |
* parser functions should use them without accessing the
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363 |
* AFM_Stream directly.
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364 |
*/
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365 |
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366 |
FT_LOCAL_DEF( FT_Int )
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367 |
afm_parser_read_vals( AFM_Parser parser,
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368 |
AFM_Value vals,
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|
369 |
FT_UInt n )
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|
370 |
{
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371 |
AFM_Stream stream = parser->stream;
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372 |
char* str;
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373 |
FT_UInt i;
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374 |
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375 |
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376 |
if ( n > AFM_MAX_ARGUMENTS )
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377 |
return 0;
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378 |
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379 |
for ( i = 0; i < n; i++ )
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380 |
{
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|
381 |
FT_Offset len;
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|
382 |
AFM_Value val = vals + i;
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383 |
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384 |
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385 |
if ( val->type == AFM_VALUE_TYPE_STRING )
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386 |
str = afm_stream_read_string( stream );
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387 |
else
|
|
|
388 |
str = afm_stream_read_one( stream );
|
|
|
389 |
|
|
|
390 |
if ( !str )
|
|
|
391 |
break;
|
|
|
392 |
|
|
|
393 |
len = AFM_STREAM_KEY_LEN( stream, str );
|
|
|
394 |
|
|
|
395 |
switch ( val->type )
|
|
|
396 |
{
|
|
|
397 |
case AFM_VALUE_TYPE_STRING:
|
|
|
398 |
case AFM_VALUE_TYPE_NAME:
|
|
|
399 |
{
|
|
|
400 |
FT_Memory memory = parser->memory;
|
|
|
401 |
FT_Error error;
|
|
|
402 |
|
|
|
403 |
|
|
|
404 |
if ( !FT_QALLOC( val->u.s, len + 1 ) )
|
|
|
405 |
{
|
|
|
406 |
ft_memcpy( val->u.s, str, len );
|
|
|
407 |
val->u.s[len] = '\0';
|
|
|
408 |
}
|
|
|
409 |
}
|
|
|
410 |
break;
|
|
|
411 |
|
|
|
412 |
case AFM_VALUE_TYPE_FIXED:
|
|
|
413 |
val->u.f = PS_Conv_ToFixed( (FT_Byte**)(void*)&str,
|
|
|
414 |
(FT_Byte*)str + len, 0 );
|
|
|
415 |
break;
|
|
|
416 |
|
|
|
417 |
case AFM_VALUE_TYPE_INTEGER:
|
|
|
418 |
val->u.i = PS_Conv_ToInt( (FT_Byte**)(void*)&str,
|
|
|
419 |
(FT_Byte*)str + len );
|
|
|
420 |
break;
|
|
|
421 |
|
|
|
422 |
case AFM_VALUE_TYPE_BOOL:
|
|
|
423 |
val->u.b = FT_BOOL( len == 4 &&
|
|
|
424 |
!ft_strncmp( str, "true", 4 ) );
|
|
|
425 |
break;
|
|
|
426 |
|
|
|
427 |
case AFM_VALUE_TYPE_INDEX:
|
|
|
428 |
if ( parser->get_index )
|
|
|
429 |
val->u.i = parser->get_index( str, len, parser->user_data );
|
|
|
430 |
else
|
|
|
431 |
val->u.i = 0;
|
|
|
432 |
break;
|
|
|
433 |
}
|
|
|
434 |
}
|
|
|
435 |
|
|
|
436 |
return i;
|
|
|
437 |
}
|
|
|
438 |
|
|
|
439 |
|
|
|
440 |
FT_LOCAL_DEF( char* )
|
|
|
441 |
afm_parser_next_key( AFM_Parser parser,
|
|
|
442 |
FT_Bool line,
|
|
|
443 |
FT_Offset* len )
|
|
|
444 |
{
|
|
|
445 |
AFM_Stream stream = parser->stream;
|
|
|
446 |
char* key = 0; /* make stupid compiler happy */
|
|
|
447 |
|
|
|
448 |
|
|
|
449 |
if ( line )
|
|
|
450 |
{
|
|
|
451 |
while ( 1 )
|
|
|
452 |
{
|
|
|
453 |
/* skip current line */
|
|
|
454 |
if ( !AFM_STATUS_EOL( stream ) )
|
|
|
455 |
afm_stream_read_string( stream );
|
|
|
456 |
|
|
|
457 |
stream->status = AFM_STREAM_STATUS_NORMAL;
|
|
|
458 |
key = afm_stream_read_one( stream );
|
|
|
459 |
|
|
|
460 |
/* skip empty line */
|
|
|
461 |
if ( !key &&
|
|
|
462 |
!AFM_STATUS_EOF( stream ) &&
|
|
|
463 |
AFM_STATUS_EOL( stream ) )
|
|
|
464 |
continue;
|
|
|
465 |
|
|
|
466 |
break;
|
|
|
467 |
}
|
|
|
468 |
}
|
|
|
469 |
else
|
|
|
470 |
{
|
|
|
471 |
while ( 1 )
|
|
|
472 |
{
|
|
|
473 |
/* skip current column */
|
|
|
474 |
while ( !AFM_STATUS_EOC( stream ) )
|
|
|
475 |
afm_stream_read_one( stream );
|
|
|
476 |
|
|
|
477 |
stream->status = AFM_STREAM_STATUS_NORMAL;
|
|
|
478 |
key = afm_stream_read_one( stream );
|
|
|
479 |
|
|
|
480 |
/* skip empty column */
|
|
|
481 |
if ( !key &&
|
|
|
482 |
!AFM_STATUS_EOF( stream ) &&
|
|
|
483 |
AFM_STATUS_EOC( stream ) )
|
|
|
484 |
continue;
|
|
|
485 |
|
|
|
486 |
break;
|
|
|
487 |
}
|
|
|
488 |
}
|
|
|
489 |
|
|
|
490 |
if ( len )
|
|
|
491 |
*len = ( key ) ? (FT_Offset)AFM_STREAM_KEY_LEN( stream, key )
|
|
|
492 |
: 0;
|
|
|
493 |
|
|
|
494 |
return key;
|
|
|
495 |
}
|
|
|
496 |
|
|
|
497 |
|
|
|
498 |
static AFM_Token
|
|
|
499 |
afm_tokenize( const char* key,
|
|
|
500 |
FT_Offset len )
|
|
|
501 |
{
|
|
|
502 |
int n;
|
|
|
503 |
|
|
|
504 |
|
|
|
505 |
for ( n = 0; n < N_AFM_TOKENS; n++ )
|
|
|
506 |
{
|
|
|
507 |
if ( *( afm_key_table[n] ) == *key )
|
|
|
508 |
{
|
|
|
509 |
for ( ; n < N_AFM_TOKENS; n++ )
|
|
|
510 |
{
|
|
|
511 |
if ( *( afm_key_table[n] ) != *key )
|
|
|
512 |
return AFM_TOKEN_UNKNOWN;
|
|
|
513 |
|
|
|
514 |
if ( ft_strncmp( afm_key_table[n], key, len ) == 0 )
|
|
|
515 |
return (AFM_Token) n;
|
|
|
516 |
}
|
|
|
517 |
}
|
|
|
518 |
}
|
|
|
519 |
|
|
|
520 |
return AFM_TOKEN_UNKNOWN;
|
|
|
521 |
}
|
|
|
522 |
|
|
|
523 |
|
|
|
524 |
FT_LOCAL_DEF( FT_Error )
|
|
|
525 |
afm_parser_init( AFM_Parser parser,
|
|
|
526 |
FT_Memory memory,
|
|
|
527 |
FT_Byte* base,
|
|
|
528 |
FT_Byte* limit )
|
|
|
529 |
{
|
|
|
530 |
AFM_Stream stream = NULL;
|
|
|
531 |
FT_Error error;
|
|
|
532 |
|
|
|
533 |
|
|
|
534 |
if ( FT_NEW( stream ) )
|
|
|
535 |
return error;
|
|
|
536 |
|
|
|
537 |
stream->cursor = stream->base = base;
|
|
|
538 |
stream->limit = limit;
|
|
|
539 |
|
|
|
540 |
/* don't skip the first line during the first call */
|
|
|
541 |
stream->status = AFM_STREAM_STATUS_EOL;
|
|
|
542 |
|
|
|
543 |
parser->memory = memory;
|
|
|
544 |
parser->stream = stream;
|
|
|
545 |
parser->FontInfo = NULL;
|
|
|
546 |
parser->get_index = NULL;
|
|
|
547 |
|
|
|
548 |
return PSaux_Err_Ok;
|
|
|
549 |
}
|
|
|
550 |
|
|
|
551 |
|
|
|
552 |
FT_LOCAL( void )
|
|
|
553 |
afm_parser_done( AFM_Parser parser )
|
|
|
554 |
{
|
|
|
555 |
FT_Memory memory = parser->memory;
|
|
|
556 |
|
|
|
557 |
|
|
|
558 |
FT_FREE( parser->stream );
|
|
|
559 |
}
|
|
|
560 |
|
|
|
561 |
|
|
|
562 |
FT_LOCAL_DEF( FT_Error )
|
|
|
563 |
afm_parser_read_int( AFM_Parser parser,
|
|
|
564 |
FT_Int* aint )
|
|
|
565 |
{
|
|
|
566 |
AFM_ValueRec val;
|
|
|
567 |
|
|
|
568 |
|
|
|
569 |
val.type = AFM_VALUE_TYPE_INTEGER;
|
|
|
570 |
|
|
|
571 |
if ( afm_parser_read_vals( parser, &val, 1 ) == 1 )
|
|
|
572 |
{
|
|
|
573 |
*aint = val.u.i;
|
|
|
574 |
|
|
|
575 |
return PSaux_Err_Ok;
|
|
|
576 |
}
|
|
|
577 |
else
|
|
|
578 |
return PSaux_Err_Syntax_Error;
|
|
|
579 |
}
|
|
|
580 |
|
|
|
581 |
|
|
|
582 |
static FT_Error
|
|
|
583 |
afm_parse_track_kern( AFM_Parser parser )
|
|
|
584 |
{
|
|
|
585 |
AFM_FontInfo fi = parser->FontInfo;
|
|
|
586 |
AFM_TrackKern tk;
|
|
|
587 |
char* key;
|
|
|
588 |
FT_Offset len;
|
|
|
589 |
int n = -1;
|
|
|
590 |
|
|
|
591 |
|
|
|
592 |
if ( afm_parser_read_int( parser, &fi->NumTrackKern ) )
|
|
|
593 |
goto Fail;
|
|
|
594 |
|
|
|
595 |
if ( fi->NumTrackKern )
|
|
|
596 |
{
|
|
|
597 |
FT_Memory memory = parser->memory;
|
|
|
598 |
FT_Error error;
|
|
|
599 |
|
|
|
600 |
|
|
|
601 |
if ( FT_QNEW_ARRAY( fi->TrackKerns, fi->NumTrackKern ) )
|
|
|
602 |
return error;
|
|
|
603 |
}
|
|
|
604 |
|
|
|
605 |
while ( ( key = afm_parser_next_key( parser, 1, &len ) ) != 0 )
|
|
|
606 |
{
|
|
|
607 |
AFM_ValueRec shared_vals[5];
|
|
|
608 |
|
|
|
609 |
|
|
|
610 |
switch ( afm_tokenize( key, len ) )
|
|
|
611 |
{
|
|
|
612 |
case AFM_TOKEN_TRACKKERN:
|
|
|
613 |
n++;
|
|
|
614 |
|
|
|
615 |
if ( n >= fi->NumTrackKern )
|
|
|
616 |
goto Fail;
|
|
|
617 |
|
|
|
618 |
tk = fi->TrackKerns + n;
|
|
|
619 |
|
|
|
620 |
shared_vals[0].type = AFM_VALUE_TYPE_INTEGER;
|
|
|
621 |
shared_vals[1].type = AFM_VALUE_TYPE_FIXED;
|
|
|
622 |
shared_vals[2].type = AFM_VALUE_TYPE_FIXED;
|
|
|
623 |
shared_vals[3].type = AFM_VALUE_TYPE_FIXED;
|
|
|
624 |
shared_vals[4].type = AFM_VALUE_TYPE_FIXED;
|
|
|
625 |
if ( afm_parser_read_vals( parser, shared_vals, 5 ) != 5 )
|
|
|
626 |
goto Fail;
|
|
|
627 |
|
|
|
628 |
tk->degree = shared_vals[0].u.i;
|
|
|
629 |
tk->min_ptsize = shared_vals[1].u.f;
|
|
|
630 |
tk->min_kern = shared_vals[2].u.f;
|
|
|
631 |
tk->max_ptsize = shared_vals[3].u.f;
|
|
|
632 |
tk->max_kern = shared_vals[4].u.f;
|
|
|
633 |
|
|
|
634 |
/* is this correct? */
|
|
|
635 |
if ( tk->degree < 0 && tk->min_kern > 0 )
|
|
|
636 |
tk->min_kern = -tk->min_kern;
|
|
|
637 |
break;
|
|
|
638 |
|
|
|
639 |
case AFM_TOKEN_ENDTRACKKERN:
|
|
|
640 |
case AFM_TOKEN_ENDKERNDATA:
|
|
|
641 |
case AFM_TOKEN_ENDFONTMETRICS:
|
|
|
642 |
fi->NumTrackKern = n + 1;
|
|
|
643 |
return PSaux_Err_Ok;
|
|
|
644 |
|
|
|
645 |
case AFM_TOKEN_UNKNOWN:
|
|
|
646 |
break;
|
|
|
647 |
|
|
|
648 |
default:
|
|
|
649 |
goto Fail;
|
|
|
650 |
}
|
|
|
651 |
}
|
|
|
652 |
|
|
|
653 |
Fail:
|
|
|
654 |
return PSaux_Err_Syntax_Error;
|
|
|
655 |
}
|
|
|
656 |
|
|
|
657 |
|
|
|
658 |
#undef KERN_INDEX
|
|
|
659 |
#define KERN_INDEX( g1, g2 ) ( ( (FT_ULong)g1 << 16 ) | g2 )
|
|
|
660 |
|
|
|
661 |
|
|
|
662 |
/* compare two kerning pairs */
|
|
|
663 |
FT_CALLBACK_DEF( int )
|
|
|
664 |
afm_compare_kern_pairs( const void* a,
|
|
|
665 |
const void* b )
|
|
|
666 |
{
|
|
|
667 |
AFM_KernPair kp1 = (AFM_KernPair)a;
|
|
|
668 |
AFM_KernPair kp2 = (AFM_KernPair)b;
|
|
|
669 |
|
|
|
670 |
FT_ULong index1 = KERN_INDEX( kp1->index1, kp1->index2 );
|
|
|
671 |
FT_ULong index2 = KERN_INDEX( kp2->index1, kp2->index2 );
|
|
|
672 |
|
|
|
673 |
|
|
|
674 |
if ( index1 > index2 )
|
|
|
675 |
return 1;
|
|
|
676 |
else if ( index1 < index2 )
|
|
|
677 |
return -1;
|
|
|
678 |
else
|
|
|
679 |
return 0;
|
|
|
680 |
}
|
|
|
681 |
|
|
|
682 |
|
|
|
683 |
static FT_Error
|
|
|
684 |
afm_parse_kern_pairs( AFM_Parser parser )
|
|
|
685 |
{
|
|
|
686 |
AFM_FontInfo fi = parser->FontInfo;
|
|
|
687 |
AFM_KernPair kp;
|
|
|
688 |
char* key;
|
|
|
689 |
FT_Offset len;
|
|
|
690 |
int n = -1;
|
|
|
691 |
|
|
|
692 |
|
|
|
693 |
if ( afm_parser_read_int( parser, &fi->NumKernPair ) )
|
|
|
694 |
goto Fail;
|
|
|
695 |
|
|
|
696 |
if ( fi->NumKernPair )
|
|
|
697 |
{
|
|
|
698 |
FT_Memory memory = parser->memory;
|
|
|
699 |
FT_Error error;
|
|
|
700 |
|
|
|
701 |
|
|
|
702 |
if ( FT_QNEW_ARRAY( fi->KernPairs, fi->NumKernPair ) )
|
|
|
703 |
return error;
|
|
|
704 |
}
|
|
|
705 |
|
|
|
706 |
while ( ( key = afm_parser_next_key( parser, 1, &len ) ) != 0 )
|
|
|
707 |
{
|
|
|
708 |
AFM_Token token = afm_tokenize( key, len );
|
|
|
709 |
|
|
|
710 |
|
|
|
711 |
switch ( token )
|
|
|
712 |
{
|
|
|
713 |
case AFM_TOKEN_KP:
|
|
|
714 |
case AFM_TOKEN_KPX:
|
|
|
715 |
case AFM_TOKEN_KPY:
|
|
|
716 |
{
|
|
|
717 |
FT_Int r;
|
|
|
718 |
AFM_ValueRec shared_vals[4];
|
|
|
719 |
|
|
|
720 |
|
|
|
721 |
n++;
|
|
|
722 |
|
|
|
723 |
if ( n >= fi->NumKernPair )
|
|
|
724 |
goto Fail;
|
|
|
725 |
|
|
|
726 |
kp = fi->KernPairs + n;
|
|
|
727 |
|
|
|
728 |
shared_vals[0].type = AFM_VALUE_TYPE_INDEX;
|
|
|
729 |
shared_vals[1].type = AFM_VALUE_TYPE_INDEX;
|
|
|
730 |
shared_vals[2].type = AFM_VALUE_TYPE_INTEGER;
|
|
|
731 |
shared_vals[3].type = AFM_VALUE_TYPE_INTEGER;
|
|
|
732 |
r = afm_parser_read_vals( parser, shared_vals, 4 );
|
|
|
733 |
if ( r < 3 )
|
|
|
734 |
goto Fail;
|
|
|
735 |
|
|
|
736 |
kp->index1 = shared_vals[0].u.i;
|
|
|
737 |
kp->index2 = shared_vals[1].u.i;
|
|
|
738 |
if ( token == AFM_TOKEN_KPY )
|
|
|
739 |
{
|
|
|
740 |
kp->x = 0;
|
|
|
741 |
kp->y = shared_vals[2].u.i;
|
|
|
742 |
}
|
|
|
743 |
else
|
|
|
744 |
{
|
|
|
745 |
kp->x = shared_vals[2].u.i;
|
|
|
746 |
kp->y = ( token == AFM_TOKEN_KP && r == 4 )
|
|
|
747 |
? shared_vals[3].u.i : 0;
|
|
|
748 |
}
|
|
|
749 |
}
|
|
|
750 |
break;
|
|
|
751 |
|
|
|
752 |
case AFM_TOKEN_ENDKERNPAIRS:
|
|
|
753 |
case AFM_TOKEN_ENDKERNDATA:
|
|
|
754 |
case AFM_TOKEN_ENDFONTMETRICS:
|
|
|
755 |
fi->NumKernPair = n + 1;
|
|
|
756 |
ft_qsort( fi->KernPairs, fi->NumKernPair,
|
|
|
757 |
sizeof( AFM_KernPairRec ),
|
|
|
758 |
afm_compare_kern_pairs );
|
|
|
759 |
return PSaux_Err_Ok;
|
|
|
760 |
|
|
|
761 |
case AFM_TOKEN_UNKNOWN:
|
|
|
762 |
break;
|
|
|
763 |
|
|
|
764 |
default:
|
|
|
765 |
goto Fail;
|
|
|
766 |
}
|
|
|
767 |
}
|
|
|
768 |
|
|
|
769 |
Fail:
|
|
|
770 |
return PSaux_Err_Syntax_Error;
|
|
|
771 |
}
|
|
|
772 |
|
|
|
773 |
|
|
|
774 |
static FT_Error
|
|
|
775 |
afm_parse_kern_data( AFM_Parser parser )
|
|
|
776 |
{
|
|
|
777 |
FT_Error error;
|
|
|
778 |
char* key;
|
|
|
779 |
FT_Offset len;
|
|
|
780 |
|
|
|
781 |
|
|
|
782 |
while ( ( key = afm_parser_next_key( parser, 1, &len ) ) != 0 )
|
|
|
783 |
{
|
|
|
784 |
switch ( afm_tokenize( key, len ) )
|
|
|
785 |
{
|
|
|
786 |
case AFM_TOKEN_STARTTRACKKERN:
|
|
|
787 |
error = afm_parse_track_kern( parser );
|
|
|
788 |
if ( error )
|
|
|
789 |
return error;
|
|
|
790 |
break;
|
|
|
791 |
|
|
|
792 |
case AFM_TOKEN_STARTKERNPAIRS:
|
|
|
793 |
case AFM_TOKEN_STARTKERNPAIRS0:
|
|
|
794 |
error = afm_parse_kern_pairs( parser );
|
|
|
795 |
if ( error )
|
|
|
796 |
return error;
|
|
|
797 |
break;
|
|
|
798 |
|
|
|
799 |
case AFM_TOKEN_ENDKERNDATA:
|
|
|
800 |
case AFM_TOKEN_ENDFONTMETRICS:
|
|
|
801 |
return PSaux_Err_Ok;
|
|
|
802 |
|
|
|
803 |
case AFM_TOKEN_UNKNOWN:
|
|
|
804 |
break;
|
|
|
805 |
|
|
|
806 |
default:
|
|
|
807 |
goto Fail;
|
|
|
808 |
}
|
|
|
809 |
}
|
|
|
810 |
|
|
|
811 |
Fail:
|
|
|
812 |
return PSaux_Err_Syntax_Error;
|
|
|
813 |
}
|
|
|
814 |
|
|
|
815 |
|
|
|
816 |
static FT_Error
|
|
|
817 |
afm_parser_skip_section( AFM_Parser parser,
|
|
|
818 |
FT_UInt n,
|
|
|
819 |
AFM_Token end_section )
|
|
|
820 |
{
|
|
|
821 |
char* key;
|
|
|
822 |
FT_Offset len;
|
|
|
823 |
|
|
|
824 |
|
|
|
825 |
while ( n-- > 0 )
|
|
|
826 |
{
|
|
|
827 |
key = afm_parser_next_key( parser, 1, NULL );
|
|
|
828 |
if ( !key )
|
|
|
829 |
goto Fail;
|
|
|
830 |
}
|
|
|
831 |
|
|
|
832 |
while ( ( key = afm_parser_next_key( parser, 1, &len ) ) != 0 )
|
|
|
833 |
{
|
|
|
834 |
AFM_Token token = afm_tokenize( key, len );
|
|
|
835 |
|
|
|
836 |
|
|
|
837 |
if ( token == end_section || token == AFM_TOKEN_ENDFONTMETRICS )
|
|
|
838 |
return PSaux_Err_Ok;
|
|
|
839 |
}
|
|
|
840 |
|
|
|
841 |
Fail:
|
|
|
842 |
return PSaux_Err_Syntax_Error;
|
|
|
843 |
}
|
|
|
844 |
|
|
|
845 |
|
|
|
846 |
FT_LOCAL_DEF( FT_Error )
|
|
|
847 |
afm_parser_parse( AFM_Parser parser )
|
|
|
848 |
{
|
|
|
849 |
FT_Memory memory = parser->memory;
|
|
|
850 |
AFM_FontInfo fi = parser->FontInfo;
|
|
|
851 |
FT_Error error = PSaux_Err_Syntax_Error;
|
|
|
852 |
char* key;
|
|
|
853 |
FT_Offset len;
|
|
|
854 |
FT_Int metrics_sets = 0;
|
|
|
855 |
|
|
|
856 |
|
|
|
857 |
if ( !fi )
|
|
|
858 |
return PSaux_Err_Invalid_Argument;
|
|
|
859 |
|
|
|
860 |
key = afm_parser_next_key( parser, 1, &len );
|
|
|
861 |
if ( !key || len != 16 ||
|
|
|
862 |
ft_strncmp( key, "StartFontMetrics", 16 ) != 0 )
|
|
|
863 |
return PSaux_Err_Unknown_File_Format;
|
|
|
864 |
|
|
|
865 |
while ( ( key = afm_parser_next_key( parser, 1, &len ) ) != 0 )
|
|
|
866 |
{
|
|
|
867 |
AFM_ValueRec shared_vals[4];
|
|
|
868 |
|
|
|
869 |
|
|
|
870 |
switch ( afm_tokenize( key, len ) )
|
|
|
871 |
{
|
|
|
872 |
case AFM_TOKEN_METRICSSETS:
|
|
|
873 |
if ( afm_parser_read_int( parser, &metrics_sets ) )
|
|
|
874 |
goto Fail;
|
|
|
875 |
|
|
|
876 |
if ( metrics_sets != 0 && metrics_sets != 2 )
|
|
|
877 |
{
|
|
|
878 |
error = PSaux_Err_Unimplemented_Feature;
|
|
|
879 |
|
|
|
880 |
goto Fail;
|
|
|
881 |
}
|
|
|
882 |
break;
|
|
|
883 |
|
|
|
884 |
case AFM_TOKEN_ISCIDFONT:
|
|
|
885 |
shared_vals[0].type = AFM_VALUE_TYPE_BOOL;
|
|
|
886 |
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
|
|
|
887 |
goto Fail;
|
|
|
888 |
|
|
|
889 |
fi->IsCIDFont = shared_vals[0].u.b;
|
|
|
890 |
break;
|
|
|
891 |
|
|
|
892 |
case AFM_TOKEN_FONTBBOX:
|
|
|
893 |
shared_vals[0].type = AFM_VALUE_TYPE_FIXED;
|
|
|
894 |
shared_vals[1].type = AFM_VALUE_TYPE_FIXED;
|
|
|
895 |
shared_vals[2].type = AFM_VALUE_TYPE_FIXED;
|
|
|
896 |
shared_vals[3].type = AFM_VALUE_TYPE_FIXED;
|
|
|
897 |
if ( afm_parser_read_vals( parser, shared_vals, 4 ) != 4 )
|
|
|
898 |
goto Fail;
|
|
|
899 |
|
|
|
900 |
fi->FontBBox.xMin = shared_vals[0].u.f;
|
|
|
901 |
fi->FontBBox.yMin = shared_vals[1].u.f;
|
|
|
902 |
fi->FontBBox.xMax = shared_vals[2].u.f;
|
|
|
903 |
fi->FontBBox.yMax = shared_vals[3].u.f;
|
|
|
904 |
break;
|
|
|
905 |
|
|
|
906 |
case AFM_TOKEN_ASCENDER:
|
|
|
907 |
shared_vals[0].type = AFM_VALUE_TYPE_FIXED;
|
|
|
908 |
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
|
|
|
909 |
goto Fail;
|
|
|
910 |
|
|
|
911 |
fi->Ascender = shared_vals[0].u.f;
|
|
|
912 |
break;
|
|
|
913 |
|
|
|
914 |
case AFM_TOKEN_DESCENDER:
|
|
|
915 |
shared_vals[0].type = AFM_VALUE_TYPE_FIXED;
|
|
|
916 |
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
|
|
|
917 |
goto Fail;
|
|
|
918 |
|
|
|
919 |
fi->Descender = shared_vals[0].u.f;
|
|
|
920 |
break;
|
|
|
921 |
|
|
|
922 |
case AFM_TOKEN_STARTCHARMETRICS:
|
|
|
923 |
{
|
|
|
924 |
FT_Int n = 0;
|
|
|
925 |
|
|
|
926 |
|
|
|
927 |
if ( afm_parser_read_int( parser, &n ) )
|
|
|
928 |
goto Fail;
|
|
|
929 |
|
|
|
930 |
error = afm_parser_skip_section( parser, n,
|
|
|
931 |
AFM_TOKEN_ENDCHARMETRICS );
|
|
|
932 |
if ( error )
|
|
|
933 |
return error;
|
|
|
934 |
}
|
|
|
935 |
break;
|
|
|
936 |
|
|
|
937 |
case AFM_TOKEN_STARTKERNDATA:
|
|
|
938 |
error = afm_parse_kern_data( parser );
|
|
|
939 |
if ( error )
|
|
|
940 |
goto Fail;
|
|
|
941 |
/* fall through since we only support kern data */
|
|
|
942 |
|
|
|
943 |
case AFM_TOKEN_ENDFONTMETRICS:
|
|
|
944 |
return PSaux_Err_Ok;
|
|
|
945 |
|
|
|
946 |
default:
|
|
|
947 |
break;
|
|
|
948 |
}
|
|
|
949 |
}
|
|
|
950 |
|
|
|
951 |
Fail:
|
|
|
952 |
FT_FREE( fi->TrackKerns );
|
|
|
953 |
fi->NumTrackKern = 0;
|
|
|
954 |
|
|
|
955 |
FT_FREE( fi->KernPairs );
|
|
|
956 |
fi->NumKernPair = 0;
|
|
|
957 |
|
|
|
958 |
fi->IsCIDFont = 0;
|
|
|
959 |
|
|
|
960 |
return error;
|
|
|
961 |
}
|
|
|
962 |
|
|
|
963 |
|
|
|
964 |
/* END */
|