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tfm.c
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C/C++ Source or Header
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1990-07-10
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2KB
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123 lines
/*
* Copyright (c) 1987, 1989 University of Maryland
* Department of Computer Science. All rights reserved.
* Permission to copy for any purpose is hereby granted
* so long as this copyright notice remains intact.
*/
#ifndef lint
static char rcsid[] = "$Header: /usr/src/local/tex/local/mctex/lib/RCS/tfm.c,v 3.1 89/08/22 22:00:12 chris Exp $";
#endif
/*
* TFM file reading routines.
*
* TODO:
* finish
*/
#include <stdio.h>
#include "types.h"
#include "fio.h"
#include "tfm.h"
static int trd_header(), trd_ci(), trd_fix();
char *malloc();
#define ALLOC(n, type) ((type *)malloc((unsigned)((n) * sizeof(type))))
int
readtfmfile(f, t, stopafterwidth)
register FILE *f;
register struct tfmdata *t;
int stopafterwidth; /* ??? */
{
i32 nc;
if (trd_header(f, &t->t_hdr))
return (-1);
nc = t->t_hdr.th_ec - t->t_hdr.th_bc + 1;
t->t_ci = NULL;
t->t_width = NULL;
t->t_height = NULL;
t->t_depth = NULL;
(void) fseek(f, t->t_hdr.th_lh * 4L, 1); /* XXX */
if ((t->t_ci = ALLOC(nc, struct char_info_word)) == NULL ||
trd_ci(f, nc, t->t_ci) ||
(t->t_width = ALLOC(t->t_hdr.th_nw, i32)) == NULL ||
trd_fix(f, t->t_hdr.th_nw, t->t_width))
goto bad;
if (stopafterwidth)
return (0);
if ((t->t_height = ALLOC(t->t_hdr.th_nh, i32)) == NULL ||
trd_fix(f, t->t_hdr.th_nh, t->t_height) ||
(t->t_depth = ALLOC(t->t_hdr.th_nd, i32)) == NULL ||
trd_fix(f, t->t_hdr.th_nd, t->t_depth))
goto bad;
return (0);
bad:
if (t->t_ci != NULL)
free((char *) t->t_ci);
if (t->t_width != NULL)
free((char *) t->t_width);
if (t->t_height != NULL)
free((char *) t->t_height);
if (t->t_depth != NULL)
free((char *) t->t_depth);
return (-1);
}
static int
trd_header(f, th)
register FILE *f;
register struct tfmheader *th;
{
register i32 *p;
for (p = &th->th_lf; p <= &th->th_np; p++)
fGetWord(f, *p);
if (feof(f))
return (-1);
return (0);
}
static int
trd_ci(f, nc, ci)
register FILE *f;
register int nc;
register struct char_info_word *ci;
{
while (--nc >= 0) {
ci->ci_width = fgetbyte(f);
ci->ci_h_d = fgetbyte(f);
ci->ci_i_t = fgetbyte(f);
ci->ci_remainder = fgetbyte(f);
ci++;
}
if (feof(f))
return (-1);
return (0);
}
static int
trd_fix(f, nf, p)
register FILE *f;
register int nf;
register i32 *p;
{
while (--nf >= 0) {
fGetLong(f, *p);
p++;
}
if (feof(f))
return (-1);
return (0);
}