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featurefile.c
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7573 lines (7087 loc) · 240 KB
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/* Copyright (C) 2000-2012 by George Williams */
/* Copyright (C) 2012-2013 by Khaled Hosny */
/* Copyright (C) 2013 by Matthew Skala */
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <fontforge-config.h>
#include "featurefile.h"
#include "encoding.h"
#include "ffglib_compat.h"
#include "fontforgevw.h"
#include "fvfonts.h"
#include "gfile.h"
#include "glif_name_hash.h"
#include "lookups.h"
#include "namelist.h"
#include "splinesaveafm.h" // for SCWorthOutputting
#include "splineutil.h"
#include "tottf.h"
#include "tottfgpos.h"
#include "ttf.h"
#include "ustring.h"
#include "utype.h"
#include <assert.h>
#include <locale.h>
#include <math.h>
#include <stdbool.h>
#include <stddef.h>
/* Adobe's opentype feature file */
/* Which suffers incompatible changes according to Adobe's whim */
/* Currently trying to support the version of december 2008, Version 1.8. */
/* Ambiguities */
/* In section 4.d we are told that MarkAttachmentType/UseMarkFilteringSet */
/* both take <glyph class name>s, yet in 9.b we are told they take */
/* <mark class name>s */
/* Read Roberts says that either will be accepted */
/* In 6.e a NULL anchor is defined by <anchorNULL>, shouldn't this be */
/* <anchor NULL>? In that same example the NULL anchor is not followed by */
/* a mark keyword and class, is this correct syntax? */
/* Read Roberts says <anchorNULL> is a typo, but that not having a mark class*/
/* is correct */
/* 2.e.vi The syntax for contourpoints has changed. In v1.6 it was */
/* "<contourpoint 2>", but in v1.8 it is "contourpoint 2". Yet this change */
/* is not mentioned in the v1.8 changelog, was it intentional? */
/* Adobe says glyph names are 31 chars, but Mangal and Source Code Sans use longer names. */
#define MAXG 63
/* ************************************************************************** */
/* ******************************* Output feat ****************************** */
/* ************************************************************************** */
/* Do GPOS and GSUB features have to share the same feature statement? */
static void dump_ascii(FILE *out, char *name) {
/* Strip out any characters which don't fit in a name token */
while ( *name ) {
if ( *name==' ' )
putc('_',out);
else if ( *name&0x80 )
/* Skip */;
else if ( isalnum(*name) || *name=='.' || *name=='_' )
putc(*name,out);
++name;
}
}
static void dump_glyphname(FILE *out, SplineChar *sc) {
if ( sc->parent->cidmaster!=NULL )
fprintf( out, "\\%d", sc->orig_pos /* That's the CID */ );
else
fprintf( out, "\\%s", sc->name );
}
static void dump_glyphbyname(FILE *out, SplineFont *sf, char *name) {
SplineChar *sc = SFGetChar(sf,-1,name);
if ( sc==NULL )
LogError(_("No glyph named %s."), name );
if ( sc==NULL || sc->parent->cidmaster==NULL )
fprintf( out, "\\%s", name );
else
fprintf( out, "\\%s", sc->name );
}
static void dump_glyphnamelist(FILE *out, SplineFont *sf, char *names) {
char *pt, *start;
int ch;
SplineChar *sc2;
int len=0;
char cidbuf[20], *nm;
if ( sf->subfontcnt==0 ) {
for ( pt=names; ; ) {
while ( *pt==' ' ) ++pt;
if ( *pt=='\0' )
break;
for ( start=pt; *pt!=' ' && *pt!='\0'; ++pt );
ch = *pt; *pt = '\0';
if ( pt-start+len+1 >72 ) {
fprintf( out, "\n\t" );
len = 8;
}
fprintf( out, "\\%s ", start );
len += strlen(start)+1;
*pt = ch;
}
} else {
for ( pt=names; ; ) {
while ( *pt==' ' ) ++pt;
if ( *pt=='\0' )
break;
for ( start=pt; *pt!=' ' && *pt!='\0'; ++pt );
ch = *pt; *pt = '\0';
sc2 = SFGetChar(sf,-1,start);
if ( sc2==NULL ) {
LogError(_("No CID named %s"), start);
nm = start;
} else {
sprintf( cidbuf, "\\%d", sc2->orig_pos );
nm = cidbuf;
}
if ( strlen(nm)+len+1 >72 ) {
fprintf( out, "\n\t" );
len = 8;
}
fprintf( out, "%s ", nm );
len += strlen(nm)+1;
*pt = ch;
}
}
}
static int MarkNeeded(uint8_t *needed,uint8_t *setsneeded,OTLookup *otl) {
int index = (otl->lookup_flags>>8)&0xff;
int sindex = (otl->lookup_flags>>16)&0xffff;
int any = false;
struct lookup_subtable *sub;
int i,l;
if ( index!=0 ) {
any |= 1;
needed[index] = true;
}
if ( otl->lookup_flags&pst_usemarkfilteringset ) {
any |= 2;
setsneeded[sindex] = true;
}
for ( sub = otl->subtables; sub!=NULL; sub=sub->next ) {
if ( sub->fpst!=NULL ) {
for ( i=sub->fpst->rule_cnt-1; i>=0; --i ) {
struct fpst_rule *r = &sub->fpst->rules[i];
for ( l=0; l<r->lookup_cnt; ++l )
any |= MarkNeeded(needed,setsneeded,r->lookups[l].lookup);
}
}
}
return( any );
}
static void gdef_markclasscheck(FILE *out,SplineFont *sf,OTLookup *otl) {
uint8_t *needed;
uint8_t *setsneeded;
int any = false;
int gpos;
if ( sf->mark_class_cnt==0 && sf->mark_set_cnt==0 )
return;
needed = calloc(sf->mark_class_cnt,1);
setsneeded = calloc(sf->mark_set_cnt,1);
if ( otl!=NULL ) {
any = MarkNeeded(needed,setsneeded,otl);
} else {
for ( gpos=0; gpos<2; ++gpos ) {
for ( otl=gpos?sf->gpos_lookups:sf->gsub_lookups; otl!=NULL; otl=otl->next ) {
int index = (otl->lookup_flags>>8)&0xff;
int sindex = (otl->lookup_flags>>16)&0xffff;
if ( index!=0 ) {
any |= 1;
needed[index] = true;
}
if ( otl->lookup_flags&pst_usemarkfilteringset ) {
any |= 2;
setsneeded[sindex] = true;
}
}
}
}
if ( any&1 ) {
int i;
fprintf( out, "# GDEF Mark Attachment Classes\n" );
for ( i=1; i<sf->mark_class_cnt; ++i ) if ( needed[i] ) {
putc( '@',out );
dump_ascii( out, sf->mark_class_names[i]);
putc( '=',out );
putc( '[',out );
dump_glyphnamelist(out,sf,sf->mark_classes[i]);
fprintf( out, "];\n" );
}
fprintf( out,"\n" );
}
if ( any&2 ) {
int i;
fprintf( out, "# GDEF Mark Attachment Sets\n" );
for ( i=0; i<sf->mark_set_cnt; ++i ) if ( setsneeded[i] ) {
putc( '@',out );
dump_ascii( out, sf->mark_set_names[i]);
putc( '=',out );
putc( '[',out );
dump_glyphnamelist(out,sf,sf->mark_sets[i]);
fprintf( out, "];\n" );
}
fprintf( out,"\n" );
}
free(needed);
free(setsneeded);
}
static void dump_fpst_everythingelse(FILE *out, SplineFont *sf,char **classes,
int ccnt, OTLookup *otl) {
/* Every now and then we need to dump out class 0, the "Everything Else" */
/* Opentype class. So... find all the glyphs which aren't listed in one */
/* of the other classes, and dump 'em. Even less frequently we will be */
/* asked to apply a transformation to those elements, so we must dump */
/* out the transformed things in the same order */
int gid, i, k, ch;
char *pt, *start;
const char *text;
SplineFont *sub;
SplineChar *sc;
PST *pst;
int len = 8;
if ( sf->subfontcnt==0 ) {
for ( gid=0; gid<sf->glyphcnt; ++gid ) if ( (sc=sf->glyphs[gid])!=NULL)
sc->ticked = false;
} else {
for ( k=0; k<sf->subfontcnt; ++k ) {
sub = sf->subfonts[k];
for ( gid=0; gid<sub->glyphcnt; ++gid ) if ( (sc=sub->glyphs[gid])!=NULL)
sc->ticked = false;
}
}
for ( i=1; i<ccnt; ++i ) {
for ( pt=classes[i] ; *pt ; ) {
while ( *pt==' ' ) ++pt;
start = pt;
while ( *pt!=' ' && *pt!='\0' ) ++pt;
if ( pt==start )
break;
ch = *pt; *pt = '\0';
sc = SFGetChar(sf,-1,start);
if ( sc!=NULL )
sc->ticked = true;
*pt = ch;
}
}
if ( sf->subfontcnt==0 ) {
for ( gid=0; gid<sf->glyphcnt; ++gid ) if ( (sc=sf->glyphs[gid])!=NULL && !sc->ticked ) {
if ( otl!=NULL ) {
for ( pst=sc->possub; pst!=NULL; pst=pst->next )
if ( pst->subtable!=NULL && pst->subtable->lookup == otl )
break;
if ( pst!=NULL )
text = pst->u.subs.variant;
else
text = NULL;
} else
text = sc->name;
if ( (text==NULL && len+6 > 72 ) ||
( text!=NULL && strlen(text)+len+2 > 72 )) {
fprintf( out, "\n\t" );
len = 8;
}
if ( text==NULL ) {
fprintf( out, "NULL " );
len += 5;
} else {
fprintf( out, "\\%s ", text );
len += strlen(text)+2;
}
}
} else {
for ( k=0; k<sf->subfontcnt; ++k ) {
sub = sf->subfonts[k];
for ( gid=0; gid<sub->glyphcnt; ++gid ) if ( (sc=sub->glyphs[gid])!=NULL && !sc->ticked ) {
if ( otl!=NULL ) {
for ( pst=sc->possub; pst!=NULL; pst=pst->next )
if ( pst->subtable!=NULL && pst->subtable->lookup == otl )
break;
if ( pst!=NULL )
sc = SFGetChar(sf,-1,pst->u.subs.variant);
else
sc = NULL;
}
if ( len+8> 76 ) {
fprintf( out, "\n\t" );
len = 8;
}
if ( sc!=NULL ) {
fprintf( out, "\\%d ", sc->orig_pos );
len += 8;
} else {
fprintf( out, "NULL " );
len += 5;
}
}
}
}
}
static char *lookupname(OTLookup *otl) {
char *pt1, *pt2;
static char space[MAXG+1];
if ( otl->tempname != NULL )
return( otl->tempname );
for ( pt1=otl->lookup_name,pt2=space; *pt1 && pt2<space+MAXG; ++pt1 ) {
if ( !(*pt1&0x80) && (isalpha(*pt1) || *pt1=='_' || *pt1=='.' ||
(pt1!=otl->lookup_name && isdigit(*pt1))))
*pt2++ = *pt1;
}
*pt2 = '\0';
return( space );
}
static void dumpdevice(FILE *out,DeviceTable *devtab) {
int i, any = false;
fprintf( out, "<device " );
if ( devtab!=NULL && devtab->corrections!=NULL ) {
for ( i=devtab->first_pixel_size; i<=devtab->last_pixel_size; ++i ) if ( devtab->corrections[i-devtab->first_pixel_size]!=0 ) {
if ( any )
putc(',',out);
else
any = true;
fprintf( out, "%d %d", i, devtab->corrections[i-devtab->first_pixel_size]);
}
}
if ( any )
fprintf( out, ">" );
else
fprintf( out, "NULL>" );
}
static void dump_valuerecord(FILE *out, struct vr *vr) {
fprintf( out, "<%d %d %d %d", vr->xoff, vr->yoff, vr->h_adv_off, vr->v_adv_off );
if ( vr->adjust!=NULL ) {
putc( ' ', out);
dumpdevice(out,&vr->adjust->xadjust);
putc( ' ', out);
dumpdevice(out,&vr->adjust->yadjust);
putc( ' ', out);
dumpdevice(out,&vr->adjust->xadv);
putc( ' ', out);
dumpdevice(out,&vr->adjust->yadv);
}
putc('>',out);
}
static void dump_anchorpoint(FILE *out,AnchorPoint *ap) {
if ( ap==NULL ) {
fprintf( out, "<anchor NULL>" );
return;
}
fprintf( out, "<anchor %g %g", rint(ap->me.x), rint(ap->me.y) );
if ( ap->has_ttf_pt )
fprintf( out, " contourpoint %d", ap->ttf_pt_index );
else if ( ap->xadjust.corrections!=NULL || ap->yadjust.corrections!=NULL ) {
putc(' ',out);
dumpdevice(out,&ap->xadjust);
putc(' ',out);
dumpdevice(out,&ap->yadjust);
}
putc('>',out);
}
static int kernclass_for_feature_file(struct splinefont *sf, struct kernclass *kc, int flags) {
// Note that this is not a complete logical inverse of sister function kernclass_for_groups_plist.
return ((flags & FF_KERNCLASS_FLAG_FEATURE) ||
(!(flags & FF_KERNCLASS_FLAG_NATIVE) && (kc->feature || sf->preferred_kerning != 1)));
}
static void dump_kernclass(FILE *out,SplineFont *sf,struct lookup_subtable *sub) {
int i,j;
KernClass *kc = sub->kc;
// We only export classes and rules here that have not been emitted in groups.plist and kerning.plist.
// The feature file can reference classes from groups.plist, but kerning.plist cannot reference groups from the feature file.
for ( i=0; i<kc->first_cnt; ++i ) if ( kc->firsts[i]!=NULL && kernclass_for_feature_file(sf, kc, kc->firsts_flags ? kc->firsts_flags[i] : 0)) {
fprintf( out, " @kc%d_first_%d = [", sub->subtable_offset, i );
dump_glyphnamelist(out,sf,kc->firsts[i] );
fprintf( out, "];\n" );
}
for ( i=0; i<kc->second_cnt; ++i ) if ( kc->seconds[i]!=NULL && kernclass_for_feature_file(sf, kc, kc->seconds_flags ? kc->seconds_flags[i] : 0)) {
fprintf( out, " @kc%d_second_%d = [", sub->subtable_offset, i );
dump_glyphnamelist(out,sf,kc->seconds[i] );
fprintf( out, "];\n" );
}
for ( i=0; i<kc->first_cnt; ++i ) if ( kc->firsts[i]!=NULL ) {
for ( j=0; j<kc->second_cnt; ++j ) if ( kc->seconds[j]!=NULL ) {
if ( kc->offsets[i*kc->second_cnt+j]!=0 && kernclass_for_feature_file(sf, kc, kc->offsets_flags ? kc->offsets_flags[i] : 0) )
fprintf( out, " pos @kc%d_first_%d @kc%d_second_%d %d;\n",
sub->subtable_offset, i,
sub->subtable_offset, j,
kc->offsets[i*kc->second_cnt+j]);
}
}
}
static char *nameend_from_class(char *glyphclass) {
char *pt = glyphclass;
while ( *pt==' ' ) ++pt;
while ( *pt!=' ' && *pt!='\0' ) ++pt;
return( pt );
}
static OTLookup *lookup_in_rule(struct fpst_rule *r,int seq,int *index, int *pos) {
int i;
OTLookup *otl;
/* Suppose there are two lookups which affect the same sequence pos? */
/* That's legal in otf, but I don't think it can be specified in the */
/* feature file. It doesn't seem likely to be used so I ignore it */
for ( i=0; i<r->lookup_cnt && seq>r->lookups[i].seq; ++i );
if (i == r->lookup_cnt || (i > 0 && seq < r->lookups[i].seq))
--i;
*index = i;
*pos = seq-r->lookups[i].seq;
otl = r->lookups[i].lookup;
if ( seq==r->lookups[i].seq )
return( otl );
/* This does not seem to be needed, and it is better if not used at all */
//if ( otl->lookup_type == gsub_ligature )
// return( otl );
else if ( otl->lookup_type == gpos_pair && *pos==1 )
return( otl );
return( NULL );
}
static PST *pst_from_single_lookup(SplineFont *sf, OTLookup *otl, char *name ) {
SplineChar *sc = SFGetChar(sf,-1,name);
PST *pst;
if ( sc==NULL )
return( NULL );
for ( pst=sc->possub; pst!=NULL; pst=pst->next ) {
if ( pst->subtable!=NULL && pst->subtable->lookup == otl )
return( pst );
}
return( NULL );
}
static PST *pst_from_pos_pair_lookup(SplineFont *sf, OTLookup *otl, char *name1, char *name2, PST *space ) {
SplineChar *sc = SFGetChar(sf,-1,name1), *sc2;
PST *pst;
int isv;
KernPair *kp;
if ( sc==NULL )
return( NULL );
for ( pst=sc->possub; pst!=NULL; pst=pst->next ) {
if ( pst->subtable!=NULL && pst->subtable->lookup == otl &&
strcmp(pst->u.pair.paired,name2)==0 )
return( pst );
}
sc2 = SFGetChar(sf,-1,name2);
if ( sc2==NULL )
return( NULL );
/* Ok. not saved as a pst. If a kp then build a pst of it */
for ( isv=0; isv<2; ++isv ) {
for ( kp= isv ? sc->vkerns : sc->kerns; kp!=NULL; kp=kp->next ) {
if ( kp->subtable->lookup==otl && kp->sc == sc2 ) {
memset(space->u.pair.vr,0,2*sizeof(struct vr));
/* !!! Bug. Lose device tables here */
if ( isv )
space->u.pair.vr[0].v_adv_off = kp->off;
else
space->u.pair.vr[0].h_adv_off = kp->off;
return( space );
}
}
}
return( NULL );
}
static PST *pst_from_ligature(SplineFont *sf, OTLookup *otl, char *components ) {
PST *pst;
SplineFont *_sf;
int k,gid;
SplineChar *sc;
k=0;
do {
_sf = sf->subfontcnt==0 ? sf : sf->subfonts[k];
for ( gid=0; gid<_sf->glyphcnt; ++gid ) if ( (sc = _sf->glyphs[gid])!=NULL ) {
for ( pst=sc->possub; pst!=NULL; pst=pst->next ) {
if ( pst->subtable!=NULL && pst->subtable->lookup == otl &&
strcmp(pst->u.lig.components,components)==0 ) {
pst->u.lig.lig = sc;
return( pst );
}
}
}
++k;
} while ( k<sf->subfontcnt );
return( NULL );
}
static PST *pst_any_from_otl(SplineFont *sf, OTLookup *otl ) {
PST *pst;
SplineFont *_sf;
int k,gid;
SplineChar *sc;
k=0;
do {
_sf = sf->subfontcnt==0 ? sf : sf->subfonts[k];
for ( gid=0; gid<_sf->glyphcnt; ++gid ) if ( (sc = _sf->glyphs[gid])!=NULL ) {
for ( pst=sc->possub; pst!=NULL; pst=pst->next ) {
if ( pst->subtable!=NULL && pst->subtable->lookup == otl ) {
if ( otl->lookup_type == gsub_ligature )
pst->u.lig.lig = sc;
return( pst );
}
}
}
++k;
} while ( k<sf->subfontcnt );
return( NULL );
}
static AnchorPoint *apfind_entry_exit(SplineFont *sf,OTLookup *otl, char *name,
AnchorPoint **_exit) {
AnchorPoint *entry = NULL, *exit = NULL;
AnchorPoint *ap;
SplineChar *sc = SFGetChar(sf,-1,name);
if ( sc==NULL )
return( NULL );
for ( ap = sc->anchor ; ap!=NULL; ap=ap->next ) {
if ( ap->anchor->subtable->lookup == otl ) {
if ( ap->type == at_centry )
entry = ap;
else if ( ap->type == at_cexit )
exit = ap;
}
}
*_exit = exit;
return( entry );
}
static void dump_contextpstglyphs(FILE *out,SplineFont *sf,
struct lookup_subtable *sub, struct fpst_rule *r) {
int i, j, pos, index;
OTLookup *otl;
struct vr pairvr[2];
PST *pst, space;
char *start, *pt, *last_start, *last_end;
int ch, ch2, uses_lookups=false;
space.u.pair.vr = pairvr;
if ( r->u.glyph.back!=NULL ) {
char *temp = reverseGlyphNames(r->u.glyph.back);
dump_glyphnamelist(out,sf,temp);
free (temp);
putc(' ',out);
}
last_start = last_end = NULL;
for ( pt=r->u.glyph.names, i=0; ; ++i) {
while ( *pt==' ' ) ++pt;
if ( *pt=='\0' )
break;
for ( start=pt; *pt!=' ' && *pt!='\0'; ++pt );
ch = *pt; *pt = '\0';
otl = lookup_in_rule(r,i,&index, &pos);
if ( otl!=NULL && !otl->ticked ) {
if ( otl->lookup_type == gpos_cursive )
fprintf( out, "cursive " );
else if ( otl->lookup_type == gpos_mark2mark )
fprintf( out, "mark " );
}
dump_glyphbyname(out,sf,start);
putc('\'',out);
if ( otl!=NULL ) {
if ( otl->ticked ) {
fprintf(out, "lookup %s ", lookupname(otl) );
uses_lookups = true;
} else if ( otl->lookup_type==gpos_single ) {
pst = pst_from_single_lookup(sf, otl, start);
if ( pst!=NULL )
dump_valuerecord(out,&pst->u.pos);
} else if ( otl->lookup_type==gpos_pair ) {
if ( pos==1 ) {
ch2 = *last_end; *last_end = '\0';
pst = pst_from_pos_pair_lookup(sf,otl,last_start,start,&space);
*last_end = ch2;
} else {
char *next_start, *next_end;
*pt = ch;
next_start = pt;
while ( *next_start==' ' ) ++next_start;
*pt = '\0';
if ( *next_start!='\0' ) {
for ( next_end=next_start; *next_end!=' ' && *next_end!='\0'; ++next_end );
ch2 = *next_end; *next_end = '\0';
pst = pst_from_pos_pair_lookup(sf,otl,start,next_start,&space);
*next_end = ch2;
} else
pst = NULL;
}
if ( pst!=NULL )
dump_valuerecord(out,&pst->u.pair.vr[pos]);
} else if ( otl->lookup_type==gpos_cursive ) {
AnchorPoint *entry, *exit;
entry = apfind_entry_exit(sf,otl,start,&exit);
dump_anchorpoint(out,entry);
putc(' ',out);
dump_anchorpoint(out,exit);
putc(' ',out);
} else if ( otl->lookup_type>gpos_start && otl->ticked )
fprintf(out, "<lookup %s> ", lookupname(otl) );
}
last_start = start; last_end = pt;
*pt = ch;
putc(' ',out);
}
if ( r->u.glyph.fore!=NULL ) {
dump_glyphnamelist(out,sf,r->u.glyph.fore );
putc(' ',out);
}
if ( r->lookup_cnt!=0 && sub->lookup->lookup_type<gpos_start && !uses_lookups ) {
fprintf( out, " by " );
for ( i=0; i<r->lookup_cnt; ++i ) {
otl = r->lookups[i].lookup;
for ( pt=r->u.glyph.names, j=0; ; j++ ) {
while ( *pt==' ' ) ++pt;
if ( *pt=='\0' || j>=r->lookups[i].seq )
break;
while ( *pt!=' ' && *pt!='\0' ) ++pt;
}
if ( otl->lookup_type == gsub_single ) {
pst = pst_from_single_lookup(sf,otl,pt);
if ( pst!=NULL )
dump_glyphbyname(out,sf,pst->u.subs.variant );
} else if ( otl->lookup_type==gsub_ligature ) {
pst = pst_from_ligature(sf,otl,pt);
if ( pst!=NULL )
dump_glyphname(out,pst->u.lig.lig);
putc( ' ',out );
} else if ( otl->lookup_type<gpos_start && otl->ticked )
fprintf(out, "<lookup %s> ", lookupname(otl) );
}
}
putc(';',out); putc('\n',out);
}
static void dump_contextpstcoverage(FILE *out,SplineFont *sf,
struct lookup_subtable *sub, struct fpst_rule *r, int in_ignore) {
int i, pos, index;
OTLookup *otl;
PST *pst, space;
char *start, *pt, *last_end;
int ch, ch2, uses_lookups=false;
/* bcovers glyph classes are in reverse order, but they should be in */
/* natural order in the feature file, so we dump them in the reverse */
/* order */
for ( i=r->u.coverage.bcnt-1; i>=0; --i ) {
putc('[',out);
dump_glyphnamelist(out,sf,r->u.coverage.bcovers[i] );
fprintf( out, "] ");
}
for ( i=0; i<r->u.coverage.ncnt; ++i ) {
putc('[',out);
dump_glyphnamelist(out,sf,r->u.coverage.ncovers[i] );
putc(']',out);
if ( in_ignore )
putc('\'',out);
else {
otl = lookup_in_rule(r,i,&index, &pos);
putc( '\'', out );
if ( otl!=NULL ) {
/* Ok, I don't see any way to specify a class of value records */
/* so just assume all vr will be the same for the class */
pt = nameend_from_class(r->u.coverage.ncovers[i]);
ch = *pt; *pt = '\0';
if ( otl->ticked ) {
fprintf(out, "lookup %s ", lookupname(otl) );
uses_lookups = true;
} else if ( otl->lookup_type==gpos_single ) {
pst = pst_from_single_lookup(sf,otl,r->u.coverage.ncovers[i]);
if ( pst!=NULL )
dump_valuerecord(out,&pst->u.pos);
} else if ( otl->lookup_type==gpos_pair ) {
if ( pos==1 ) {
last_end = nameend_from_class(r->u.coverage.ncovers[i-1]);
ch2 = *last_end; *last_end = '\0';
pst = pst_from_pos_pair_lookup(sf,otl,r->u.coverage.ncovers[i-1],r->u.coverage.ncovers[i],&space);
*last_end = ch2;
} else if ( i+1<r->u.coverage.ncnt ) {
char *next_end;
next_end = nameend_from_class(r->u.coverage.ncovers[i+1]);
ch2 = *next_end; *next_end = '\0';
pst = pst_from_pos_pair_lookup(sf,otl,r->u.coverage.ncovers[i],r->u.coverage.ncovers[i+1],&space);
*next_end = ch2;
} else
pst = NULL;
if ( pst!=NULL )
dump_valuerecord(out,&pst->u.pair.vr[pos]);
}
*pt = ch;
}
}
putc(' ',out);
}
for ( i=0; i<r->u.coverage.fcnt; ++i ) {
putc('[',out);
dump_glyphnamelist(out,sf,r->u.coverage.fcovers[i] );
fprintf( out, "] ");
}
if ( sub->lookup->lookup_type == gsub_reversecchain ) {
fprintf( out, " by " );
if ( strchr(r->u.rcoverage.replacements,' ')==NULL )
dump_glyphnamelist(out,sf,r->u.rcoverage.replacements);
else {
putc('[',out);
dump_glyphnamelist(out,sf,r->u.rcoverage.replacements);
putc(']',out);
}
} else if ( r->lookup_cnt!=0 && sub->lookup->lookup_type<gpos_start && !uses_lookups ) {
fprintf( out, " by " );
for ( i=0; i<r->lookup_cnt; ++i ) {
int len;
otl = r->lookups[i].lookup;
if ( otl->lookup_type==gsub_single ) {
len = 40;
putc('[',out);
for ( pt=r->u.coverage.ncovers[r->lookups[i].seq]; ; ) {
while ( *pt==' ' ) ++pt;
if ( *pt=='\0' )
break;
for ( start=pt; *pt!=' ' && *pt!='\0'; ++pt );
ch = *pt; *pt = '\0';
pst = pst_from_single_lookup(sf,otl,start);
if ( len+(pst==NULL?4:strlen(pst->u.subs.variant))>80 ) {
fprintf(out,"\n\t" );
len = 8;
}
if ( pst!=NULL ) {
dump_glyphbyname(out,sf,pst->u.subs.variant);
len += strlen(pst->u.subs.variant);
} else {
fprintf( out, "NULL" );
len += 4;
}
*pt = ch;
putc(' ',out);
++len;
}
putc(']',out);
} else if ( otl->lookup_type==gsub_ligature ) {
/* If we get here assume there is only one ligature */
/* or there is only one combination of input glyphs (all coverage tables contain one glyph) */
if ( sub->fpst->effectively_by_glyphs ) {
/* Build up THE combination of input glyphs */
int len, n;
char *start;
for ( n=len=0; n<r->u.coverage.ncnt; ++n )
len += strlen(r->u.coverage.ncovers[n])+1;
start = malloc(len+1);
for ( n=len=0; n<r->u.coverage.ncnt; ++n ) {
strcpy(start+len,r->u.coverage.ncovers[n]);
len += strlen(r->u.coverage.ncovers[n]);
if ( start[len-1]!=' ' )
start[len++] = ' ';
}
if ( len!=0 )
start[len-1] = '\0';
pst = pst_from_ligature(sf,otl,start);
free( start );
} else
pst = pst_any_from_otl(sf,otl);
if ( pst!=NULL )
dump_glyphname(out,pst->u.lig.lig);
}
}
}
putc(';',out); putc('\n',out);
}
static int ClassUsed(FPST *fpst, int which, int class_num) {
int i,j;
for ( j=0; j<fpst->rule_cnt; ++j ) {
struct fpst_rule *r = &fpst->rules[j];
int cnt = which==0? r->u.fpc_class.ncnt : which==1 ? r->u.fpc_class.bcnt : r->u.fpc_class.fcnt;
uint16_t *checkme = which==0? r->u.fpc_class.nclasses : which==1 ? r->u.fpc_class.bclasses : r->u.fpc_class.fclasses;
for ( i=0; i<cnt; ++i )
if ( checkme[i] == class_num )
return( true );
}
return( false );
}
static void dump_contextpstclass(FILE *out,SplineFont *sf,
struct lookup_subtable *sub, struct fpst_rule *r, int in_ignore) {
FPST *fpst = sub->fpst;
int i, pos, index;
OTLookup *otl;
PST *pst, space;
char *start, *pt, *last_start, *last_end;
int ch, ch2, uses_lookups=false;
for ( i=0; i<r->u.fpc_class.bcnt; ++i )
fprintf( out, "@cc%d_back_%d ", sub->subtable_offset, r->u.fpc_class.bclasses[i] );
for ( i=0; i<r->u.fpc_class.ncnt; ++i ) {
if ( i==0 && fpst->nclass[r->u.fpc_class.nclasses[i]]==NULL )
continue;
fprintf( out, "@cc%d_match_%d", sub->subtable_offset, r->u.fpc_class.nclasses[i] );
if ( in_ignore )
putc( '\'',out );
else {
otl = lookup_in_rule(r,i,&index, &pos);
putc( '\'', out );
if ( otl!=NULL ) {
/* Ok, I don't see any way to specify a class of value records */
/* so just assume all vr will be the same for the class */
start = fpst->nclass[r->u.fpc_class.nclasses[i]];
pt = nameend_from_class(start);
ch = *pt; *pt = '\0';
if ( otl->ticked ) {
fprintf(out, "lookup %s ", lookupname(otl) );
uses_lookups = true;
} else if ( otl->lookup_type==gpos_single ) {
pst = pst_from_single_lookup(sf,otl,start);
if ( pst!=NULL )
dump_valuerecord(out,&pst->u.pos);
} else if ( otl->lookup_type==gpos_pair ) {
if ( pos==1 ) {
last_start = fpst->nclass[r->u.fpc_class.nclasses[i-1]];
last_end = nameend_from_class(last_start);
ch2 = *last_end; *last_end = '\0';
pst = pst_from_pos_pair_lookup(sf,otl,last_start,start,&space);
*last_end = ch2;
} else if ( i+1<r->u.coverage.ncnt ) {
char *next_start, *next_end;
next_start = fpst->nclass[r->u.fpc_class.nclasses[i+1]];
next_end = nameend_from_class(next_start);
ch2 = *next_end; *next_end = '\0';
pst = pst_from_pos_pair_lookup(sf,otl,start,next_start,&space);
*next_end = ch2;
} else
pst = NULL;
if ( pst!=NULL )
dump_valuerecord(out,&pst->u.pair.vr[pos]);
}
*pt = ch;
}
}
putc(' ',out);
}
for ( i=0; i<r->u.fpc_class.fcnt; ++i )
fprintf( out, "@cc%d_ahead_%d ", sub->subtable_offset, r->u.fpc_class.fclasses[i] );
if ( r->lookup_cnt!=0 && sub->lookup->lookup_type<gpos_start && !uses_lookups ) {
fprintf( out, " by " );
for ( i=0; i<r->lookup_cnt; ++i ) {
otl = r->lookups[i].lookup;
if ( otl->lookup_type==gsub_single ) {
putc('[',out);
if ( fpst->nclass[r->u.fpc_class.nclasses[r->lookups[i].seq]]!=NULL ) {
for ( pt=fpst->nclass[r->u.fpc_class.nclasses[r->lookups[i].seq]]; ; ) {
while ( *pt==' ' ) ++pt;
if ( *pt=='\0' )
break;
for ( start=pt; *pt!=' ' && *pt!='\0'; ++pt );
ch = *pt; *pt = '\0';
pst = pst_from_single_lookup(sf,otl,start);
if ( pst!=NULL )
dump_glyphbyname(out,sf,pst->u.subs.variant);
else
fprintf( out, "NULL" );
*pt = ch;
putc(' ',out);
}
} else
dump_fpst_everythingelse(out,sf,fpst->nclass,fpst->nccnt,otl);
putc(']',out);
} else if ( otl->lookup_type==gsub_ligature ) {
/* I don't think it is possible to do this correctly */
/* adobe doesn't say how to order glyphs for [f longs]' [i l]' */
/* so just assume there is only one ligature */
pst = pst_any_from_otl(sf,otl);
if ( pst!=NULL )
dump_glyphname(out,pst->u.lig.lig);
}
putc( ' ',out );
}
}
putc( ';',out ); putc( '\n',out );
}
static void dump_contextpst(FILE *out,SplineFont *sf,struct lookup_subtable *sub) {
FPST *fpst = sub->fpst;
int i,j,k;
if ( fpst->format==pst_class ) {
if ( fpst->nclass!=NULL ) {
for ( i=0; i<fpst->nccnt; ++i ) {
if ( fpst->nclass[i]!=NULL || (i==0 && ClassUsed(fpst,0,0))) {
fprintf( out, " @cc%d_match_%d = [", sub->subtable_offset, i );
if ( fpst->nclass[i]!=NULL )
dump_glyphnamelist(out,sf,fpst->nclass[i] );
else
dump_fpst_everythingelse(out,sf,fpst->nclass,fpst->nccnt,NULL);
fprintf( out, "];\n" );
}
}
}
if ( fpst->bclass!=NULL ) {
for ( i=0; i<fpst->bccnt; ++i ) {
if ( fpst->bclass[i]!=NULL || (i==0 && ClassUsed(fpst,1,0))) {
fprintf( out, " @cc%d_back_%d = [", sub->subtable_offset, i );
if ( fpst->bclass[i]!=NULL )
dump_glyphnamelist(out,sf,fpst->bclass[i] );
else
dump_fpst_everythingelse(out,sf,fpst->bclass,fpst->bccnt,NULL);
fprintf( out, "];\n" );
}
}
}
if ( fpst->fclass!=NULL ) {
for ( i=0; i<fpst->fccnt; ++i ) {
if ( fpst->fclass[i]!=NULL || (i==0 && ClassUsed(fpst,2,0))) {
fprintf( out, " @cc%d_ahead_%d = [", sub->subtable_offset, i );
if ( fpst->fclass[i]!=NULL )
dump_glyphnamelist(out,sf,fpst->fclass[i] );
else
dump_fpst_everythingelse(out,sf,fpst->fclass,fpst->fccnt,NULL);
fprintf( out, "];\n" );
}
}
}
}
for ( j=0; j<fpst->rule_cnt; ++j ) {
struct fpst_rule *r = &fpst->rules[j];
for ( i=0; i<r->lookup_cnt; ++i ) for ( k=i+1; k<r->lookup_cnt; ++k ) {
if ( r->lookups[i].seq > r->lookups[k].seq ) {
int s = r->lookups[i].seq;
OTLookup *otl = r->lookups[i].lookup;
r->lookups[i].seq = r->lookups[k].seq;
r->lookups[k].seq = s;
r->lookups[i].lookup = r->lookups[k].lookup;
r->lookups[k].lookup = otl;
}
}
if ( sub->lookup->lookup_type>=gpos_start )
fprintf( out, r->lookup_cnt==0 ? " ignore pos " : " pos " );
else if ( sub->lookup->lookup_type==gsub_reversecchain )
fprintf( out, !r->u.rcoverage.replacements
|| !r->u.rcoverage.replacements[0] ?