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/*
* Loads a tfm file. It marks the characters as undefined.
*/
#include "dvips.h" /* The copyright notice in that file is included too! */
#ifdef KPATHSEA
#include <kpathsea/c-pathmx.h>
#endif
/*
* These are the external routines it calls:
*/
#include "protos.h"
/*
* Here are the external variables we use:
*/
extern real conv ;
extern real vconv ;
extern real alpha ;
#ifndef KPATHSEA
extern char *tfmpath ;
#endif
extern char errbuf[] ;
extern integer fsizetol ;
extern Boolean noomega ;
/*
* Our static variables:
*/
FILE *tfmfile ;
static char name[50] ;
void
badtfm P1C(char *, s)
{
(void)sprintf(errbuf,"! Bad TFM file %s: %s",name,s) ;
error(errbuf);
}
/*
* Tries to open a tfm file. Uses cmr10.tfm if unsuccessful,
* and complains loudly about it.
*/
void
tfmopen P1C(register fontdesctype *, fd)
{
register char *n;
#ifdef KPATHSEA
kpse_file_format_type d ;
#else
register char *d;
#endif
n = fd->name ;
if (!noomega) {
#ifdef KPATHSEA
d = ofmpath;
#else
d = fd->area ;
if (*d==0)
d = ofmpath ;
#endif
#ifdef MVSXA /* IBM: MVS/XA */
(void)sprintf(name, "ofm(%s)", n) ;
#else
(void)sprintf(name, "%s.ofm", n) ;
#endif
if ((tfmfile=search(d, name, READBIN))!=NULL)
return ;
}
#ifdef KPATHSEA
d = tfmpath;
#else
d = fd->area ;
if (*d==0)
d = tfmpath ;
#endif
#ifdef MVSXA /* IBM: MVS/XA */
(void)sprintf(name, "tfm(%s)", n) ;
#else
(void)sprintf(name, "%s.tfm", n) ;
#endif
if ((tfmfile=search(d, name, READBIN))!=NULL)
return ;
(void)sprintf(errbuf, "Can't open font metric file %s%s",
fd->area, name) ;
error(errbuf) ;
error("I will use cmr10.tfm instead, so expect bad output.") ;
#ifdef MVSXA /* IBM: MVS/XA */
if ((tfmfile=search(d, "tfm(cmr10)", READBIN))!=NULL)
#else
if ((tfmfile=search(d, "cmr10.tfm", READBIN))!=NULL)
#endif
return ;
error("! I can't find cmr10.tfm; please reinstall me with proper paths") ;
}
shalfword
tfmbyte P1H(void)
{
return(getc(tfmfile)) ;
}
halfword
tfm16 P1H(void)
{
register halfword a ;
a = tfmbyte () ;
return ( a * 256 + tfmbyte () ) ;
}
integer
tfm32 P1H(void)
{
register integer a ;
a = tfm16 () ;
if (a > 32767) a -= 65536 ;
return ( a * 65536 + tfm16 () ) ;
}
int
tfmload P1C(register fontdesctype *, curfnt)
{
register integer i, j ;
register integer li, cd=0 ;
integer scaledsize ;
integer nw, hd ;
integer bc, ec ;
integer nco=0, ncw=0, npc=0, no_repeats = 0 ;
integer *scaled ;
integer *chardat ;
int font_level ;
integer pretend_no_chars ;
int charcount = 0 ;
tfmopen(curfnt) ;
/*
* Next, we read the font data from the tfm file, and store it in
* our own arrays.
*/
li = tfm16() ;
if (li!=0) {
font_level = -1 ;
hd = tfm16() ;
bc = tfm16() ; ec = tfm16() ;
nw = tfm16() ;
li = tfm32() ; li = tfm32() ; li = tfm32() ; li = tfm16() ;
if (hd<2 || bc>ec+1 || ec>255 || nw>256)
badtfm("header") ;
} else { /* In an .ofm file */
if (noomega) badtfm("length") ;
font_level = tfm16();
li = tfm32() ; hd = tfm32() ;
bc = tfm32() ; ec = tfm32() ;
nw = tfm32() ;
for (i=0; i<8; i++) li=tfm32();
if (font_level>1 || hd<2 || bc<0 || ec<0 || nw<0
|| bc>ec+1 || ec>65535 || nw>65536)
badtfm("header") ;
if (font_level==1) {
nco = tfm32() ;
ncw = tfm32() ;
npc = tfm32() ;
for (i=0; i<12; i++) li=tfm32();
}
}
li = tfm32() ;
check_checksum (li, curfnt->checksum, curfnt->name);
li = (integer)(alpha * (real)tfm32()) ;
if (li > curfnt->designsize + fsizetol ||
li < curfnt->designsize - fsizetol) {
(void)sprintf(errbuf,"Design size mismatch in %s", name) ;
error(errbuf) ;
}
pretend_no_chars=ec+1 ;
if (pretend_no_chars<256) pretend_no_chars=256 ;
else {
curfnt->chardesc = (chardesctype *)
xrealloc(curfnt->chardesc, sizeof(chardesctype)*pretend_no_chars) ;
curfnt->maxchars = pretend_no_chars ;
}
for (i=2; i<((font_level==1)?nco-29:hd); i++)
li = tfm32() ;
chardat = (integer *) xmalloc(pretend_no_chars*sizeof(integer)) ;
for (i=0; i<pretend_no_chars; i++)
chardat[i] = -1 ;
for (i=bc; i<=ec; i++) {
if (no_repeats>0) {
no_repeats-- ;
} else if (font_level>=0) {
cd = tfm16() ;
li = tfm32() ;
li = tfm16() ;
if (font_level==1) {
no_repeats = tfm16() ;
for (j=0; j<(npc|1); j++) tfm16() ;
ncw -= 3 + npc/2 ;
}
} else {
cd = tfmbyte() ;
li = tfm16() ;
li = tfmbyte() ;
}
if (cd>=nw) badtfm("char info") ;
if (cd) {
chardat[i] = cd ;
charcount++ ;
}
}
if (font_level==1&&ncw!=0) {
sprintf(errbuf, "Table size mismatch in %s", curfnt->name) ;
error(errbuf) ;
}
scaledsize = curfnt->scaledsize ;
scaled = (integer *) xmalloc(nw*sizeof(integer)) ;
for (i=0; i<nw; i++)
scaled[i] = scalewidth(tfm32(), scaledsize) ;
(void)fclose(tfmfile) ;
for (i=0; i<pretend_no_chars; i++)
if (chardat[i]!= -1) {
li = scaled[chardat[i]] ;
curfnt->chardesc[i].TFMwidth = li ;
if (li >= 0)
curfnt->chardesc[i].pixelwidth = ((integer)(conv*li+0.5)) ;
else
curfnt->chardesc[i].pixelwidth = -((integer)(conv*-li+0.5)) ;
curfnt->chardesc[i].flags = (curfnt->resfont ? EXISTS : 0) ;
curfnt->chardesc[i].flags2 = EXISTS ;
} else curfnt->chardesc[i].flags = curfnt->chardesc[i].flags2 = 0 ;
free(chardat) ;
free(scaled) ;
if (ec>=256) curfnt->codewidth = 2 ; /* XXX: 2byte-code can have ec<256 */
curfnt->loaded = 1 ;
return charcount ;
}
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