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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 ;
/*
* Our static variables:
*/
FILE *tfmfile ;
static char name[50] ;
/*
* 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 = tfmpath;
#else
register char *d;
d = fd->area ;
if (*d==0)
d = tfmpath ;
#endif
n = fd->name ;
#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) {
(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
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 shalfword i ;
register integer li ;
integer scaledsize ;
shalfword nw, hd ;
shalfword bc, ec ;
integer scaled[256] ;
halfword chardat[256] ;
int charcount = 0 ;
tfmopen(curfnt) ;
/*
* Next, we read the font data from the tfm file, and store it in
* our own arrays.
*/
li = tfm16() ; hd = tfm16() ;
bc = tfm16() ; ec = tfm16() ;
nw = tfm16() ;
li = tfm32() ; li = tfm32() ; li = tfm32() ; li = tfm16() ;
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) ;
}
for (i=2; i<hd; i++)
li = tfm32() ;
for (i=0; i<256; i++)
chardat[i] = 256 ;
for (i=bc; i<=ec; i++) {
chardat[i] = tfmbyte() ;
li = tfm16() ;
li |= tfmbyte() ;
if (li || chardat[i])
charcount++ ;
}
scaledsize = curfnt->scaledsize ;
for (i=0; i<nw; i++)
scaled[i] = scalewidth(tfm32(), scaledsize) ;
(void)fclose(tfmfile) ;
for (i=0; i<256; i++)
if (chardat[i]!= 256) {
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->loaded = 1 ;
return charcount ;
}
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