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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>
#include <kpathsea/concatn.h>
#endif
/*
* The external declarations:
*/
#include "protos.h"
FILE *tfmfile;
/*
* Our static variables:
*/
static char name[50];
void
badtfm(const char *s)
{
char *msg = concatn ("! Bad TFM file ", name, ": ", s, NULL);
error(msg);
}
/*
* Tries to open a tfm file. Uses cmr10.tfm if unsuccessful,
* and complains loudly about it.
*/
void
tfmopen(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 */
sprintf(name, "ofm(%s)", n);
#else
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 */
sprintf(name, "tfm(%s)", n);
#else
sprintf(name, "%s.tfm", n);
#endif
if ((tfmfile=search(d, name, READBIN))!=NULL)
return;
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");
}
static shalfword
tfmbyte(void)
{
return(getc(tfmfile));
}
halfword
tfm16(void)
{
register halfword a;
a = tfmbyte ();
return ( a * 256 + tfmbyte () );
}
integer
tfm32(void)
{
register integer a;
a = tfm16 ();
if (a > 32767) a -= 65536;
return ( a * 65536 + tfm16 () );
}
int
tfmload(register fontdesctype *curfnt)
{
register integer i, j;
register integer li, cd=0;
integer scaledsize;
integer id, nt = 0;
integer nw, hd;
integer bc, ec;
integer nco=0, ncw=0, npc=0, no_repeats = 0;
halfword *index = NULL;
halfword *chartype = NULL;
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.
*/
curfnt->dir = 0;
curfnt->iswide = 0;
curfnt->codewidth = 1;
id = tfm16();
if (id!=0) {
font_level = -1;
if (id == 9 || id == 11) {
if (noptex) badtfm("length");
if (id == 9) curfnt->dir = id;
nt = tfm16(); li = tfm16();
curfnt->iswide = 1;
curfnt->maxchars = MAX_CODE;
curfnt->chardesc = (chardesctype *)realloc(curfnt->chardesc,
sizeof(chardesctype)*(MAX_CODE));
for (i=0; i<MAX_CODE; i++) {
curfnt->chardesc[i].TFMwidth = 0;
curfnt->chardesc[i].packptr = NULL;
curfnt->chardesc[i].pixelwidth = 0;
curfnt->chardesc[i].flags = 0;
}
}
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) && id != 9 && id != 11)
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) {
char *msg = concat ("Design size mismatch in font ", curfnt->name);
error(msg);
}
pretend_no_chars=ec+1;
if (id == 9 || id == 11) {
chardat = (integer *)xmalloc(256*sizeof(integer));
for (i=2; i<hd; i++)
li = tfm32();
index = (halfword *)malloc(nt * sizeof(halfword));
chartype = (halfword *)malloc(nt * sizeof(halfword));
li = tfm16();
li = tfm16();
for (i=1; i<nt; i++) {
index[i] = tfm16();
chartype[i] = tfm16();
}
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++;
}
} else {
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) {
char *msg = concat ("Table size mismatch in ", curfnt->name);
error(msg);
}
}
scaledsize = curfnt->scaledsize;
scaled = (integer *) xmalloc(nw*sizeof(integer));
for (i=0; i<nw; i++)
scaled[i] = scalewidth(tfm32(), scaledsize);
fclose(tfmfile);
if (id == 9 || id == 11) {
for (i=0; i<MAX_CODE; i++) {
li = scaled[chardat[0]];
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;
}
for (i=1; i<nt; i++) {
li = scaled[chardat[chartype[i]]];
curfnt->chardesc[index[i]].TFMwidth = li;
if (li >= 0)
curfnt->chardesc[index[i]].pixelwidth = ((integer)(conv*li+0.5));
else
curfnt->chardesc[index[i]].pixelwidth = -((integer)(conv*-li+0.5));
}
free(index);
free(chartype);
} else {
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;
}
if (ec>=256) curfnt->codewidth = 2; /* XXX: 2byte-code can have ec<256 */
}
free(chardat);
free(scaled);
curfnt->loaded = 1;
return charcount;
}
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