removing obsolete "cidafm" files
This commit is contained in:
David Turner
parent
ad0472531a
commit
c129cb011d
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@ -1,3 +1,8 @@
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2000-12-21 David Turner <david.turner@freetype.org>
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* src/cid/cidafm.c, src/cid/cidafm.h: removed un-needed files,
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we'll work on supporting CID AFM files later I guess :-)
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2000-12-21 Tom Kacvinsky <tjk@ams.org>
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* src/autohint/ahhint.c (ah_hinter_load, ah_hinter_load_glyph):
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284
src/cid/cidafm.c
284
src/cid/cidafm.c
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@ -1,284 +0,0 @@
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/***************************************************************************/
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/* */
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/* cidafm.c */
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/* */
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/* AFM support for CID-keyed fonts (body). */
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/* */
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/* Copyright 1996-2000 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_SOURCE_FILE( cid, cidafm.h )
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#include FT_INTERNAL_STREAM_H
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#include FT_INTERNAL_TYPE1_TYPES_H
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#include FT_INTERNAL_TYPE1_ERRORS_H
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#include <stdlib.h> /* for qsort() */
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#include <string.h> /* for strcmp() */
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#include <ctype.h> /* for isalnum() */
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/*************************************************************************/
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/* */
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/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_cidafm
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FT_LOCAL_DEF
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void CID_Done_AFM( FT_Memory memory,
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CID_AFM* afm )
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{
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FREE( afm->kern_pairs );
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afm->num_pairs = 0;
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}
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#undef IS_KERN_PAIR
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#define IS_KERN_PAIR( p ) ( p[0] == 'K' && p[1] == 'P' )
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#define IS_ALPHANUM( c ) ( isalnum( c ) || \
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c == '_' || \
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c == '.' )
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/* read a glyph name and return the equivalent glyph index */
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static
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FT_UInt afm_atoindex( FT_Byte** start,
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FT_Byte* limit,
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T1_Font* type1 )
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{
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FT_Byte* p = *start;
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FT_Int len;
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FT_UInt result = 0;
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char temp[64];
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/* skip whitespace */
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while ( ( *p == ' ' || *p == '\t' || *p == ':' || *p == ';' ) &&
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p < limit )
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p++;
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*start = p;
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/* now, read glyph name */
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while ( IS_ALPHANUM( *p ) && p < limit )
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p++;
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len = p - *start;
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if ( len > 0 && len < 64 )
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{
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FT_Int n;
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/* copy glyph name to intermediate array */
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MEM_Copy( temp, *start, len );
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temp[len] = 0;
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/* lookup glyph name in face array */
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for ( n = 0; n < type1->num_glyphs; n++ )
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{
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char* gname = (char*)type1->glyph_names[n];
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if ( gname && gname[0] == temp[0] && strcmp( gname, temp ) == 0 )
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{
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result = n;
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break;
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}
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}
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}
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*start = p;
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return result;
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}
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/* read an integer */
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static
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int afm_atoi( FT_Byte** start,
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FT_Byte* limit )
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{
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FT_Byte* p = *start;
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int sum = 0;
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int sign = 1;
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/* skip everything that is not a number */
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while ( p < limit && !isdigit( *p ) )
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{
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sign = 1;
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if ( *p == '-' )
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sign = -1;
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p++;
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}
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while ( p < limit && isdigit( *p ) )
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{
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sum = sum * 10 + ( *p - '0' );
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p++;
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}
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*start = p;
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return sum * sign;
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}
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#undef KERN_INDEX
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#define KERN_INDEX( g1, g2 ) ( ( (FT_ULong)g1 << 16 ) | g2 )
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/* compare two kerning pairs */
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static
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int compare_kern_pairs( const void* a,
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const void* b )
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{
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CID_Kern_Pair* pair1 = (CID_Kern_Pair*)a;
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CID_Kern_Pair* pair2 = (CID_Kern_Pair*)b;
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FT_ULong index1 = KERN_INDEX( pair1->glyph1, pair1->glyph2 );
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FT_ULong index2 = KERN_INDEX( pair2->glyph1, pair2->glyph2 );
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return ( index1 - index2 );
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}
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/* parse an AFM file -- for now, only read the kerning pairs */
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FT_LOCAL_DEF
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FT_Error CID_Read_AFM( FT_Face cid_face,
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FT_Stream stream )
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{
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FT_Error error;
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FT_Memory memory = stream->memory;
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FT_Byte* start;
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FT_Byte* limit;
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FT_Byte* p;
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FT_Int count = 0;
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CID_Kern_Pair* pair;
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T1_Font* type1 = &((T1_Face)t1_face)->type1;
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CID_AFM* afm = 0;
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if ( ACCESS_Frame( stream->size ) )
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return error;
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start = (FT_Byte*)stream->cursor;
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limit = (FT_Byte*)stream->limit;
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p = start;
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/* we are now going to count the occurrences of `KP' or `KPX' in */
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/* the AFM file. */
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count = 0;
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for ( p = start; p < limit - 3; p++ )
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{
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if ( IS_KERN_PAIR( p ) )
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count++;
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}
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/* Actually, kerning pairs are simply optional! */
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if ( count == 0 )
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goto Exit;
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/* allocate the pairs */
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if ( ALLOC( afm, sizeof ( *afm ) ) ||
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ALLOC_ARRAY( afm->kern_pairs, count, CID_Kern_Pair ) )
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goto Exit;
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/* now, read each kern pair */
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pair = afm->kern_pairs;
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afm->num_pairs = count;
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/* save in face object */
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((T1_Face)t1_face)->afm_data = afm;
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for ( p = start; p < limit - 3; p++ )
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{
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if ( IS_KERN_PAIR( p ) )
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{
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FT_Byte* q;
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/* skip keyword (`KP' or `KPX') */
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q = p + 2;
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if ( *q == 'X' )
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q++;
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pair->glyph1 = afm_atoindex( &q, limit, type1 );
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pair->glyph2 = afm_atoindex( &q, limit, type1 );
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pair->kerning.x = afm_atoi( &q, limit );
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pair->kerning.y = 0;
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if ( p[2] != 'X' )
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pair->kerning.y = afm_atoi( &q, limit );
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pair++;
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}
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}
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/* now, sort the kern pairs according to their glyph indices */
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qsort( afm->kern_pairs, count, sizeof ( CID_Kern_Pair ),
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compare_kern_pairs );
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Exit:
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if ( error )
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FREE( afm );
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FORGET_Frame();
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return error;
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}
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/* find the kerning for a given glyph pair */
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FT_LOCAL_DEF
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void CID_Get_Kerning( CID_AFM* afm,
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FT_UInt glyph1,
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FT_UInt glyph2,
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FT_Vector* kerning )
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{
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CID_Kern_Pair *min, *mid, *max;
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FT_ULong index = KERN_INDEX( glyph1, glyph2 );
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/* simple binary search */
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min = afm->kern_pairs;
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max = min + afm->num_pairs - 1;
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while ( min <= max )
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{
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FT_ULong midi;
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mid = min + ( max - min ) / 2;
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midi = KERN_INDEX( mid->glyph1, mid->glyph2 );
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if ( midi == index )
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{
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*kerning = mid->kerning;
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return;
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}
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if ( midi < index )
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min = mid + 1;
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else
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max = mid - 1;
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}
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kerning->x = 0;
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kerning->y = 0;
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}
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/* END */
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@ -1,67 +0,0 @@
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/***************************************************************************/
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/* */
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/* cidafm.h */
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/* */
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/* AFM support for CID-keyed fonts (specification). */
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/* */
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/* Copyright 1996-2000 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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#ifndef __CIDAFM_H__
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#define __CIDAFM_H__
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#include <ft2build.h>
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#include FT_SOURCE_FILE( cid, cidobjs.h )
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FT_BEGIN_HEADER
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typedef struct CID_Kern_Pair_
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{
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FT_UInt glyph1;
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FT_UInt glyph2;
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FT_Vector kerning;
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} CID_Kern_Pair;
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typedef struct CID_AFM_
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{
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FT_UInt num_pairs;
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CID_Kern_Pair* kern_pairs;
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} CID_AFM;
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FT_LOCAL
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FT_Error CID_Read_AFM( FT_Face cid_face,
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FT_Stream stream );
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FT_LOCAL
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void CID_Done_AFM( FT_Memory memory,
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CID_AFM* afm );
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FT_LOCAL
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void CID_Get_Kerning( CID_AFM* afm,
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FT_UInt glyph1,
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FT_UInt glyph2,
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FT_Vector* kerning );
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FT_END_HEADER
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#endif /* __CIDAFM_H__ */
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/* END */
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