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#include <u.h>
#include <libc.h>
#include <libg.h>
#include "libgint.h"
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
static char*
skip(char *s)
{
while (*s==' ' || *s=='\n' || *s=='\t')
s++;
return s;
}
Font *
rdfontfile(char *name, int ldepth)
{
Font *fnt;
Cachesubf *c;
int fd, i;
char *buf, *s, *t;
struct stat sbuf;
unsigned long min, max;
fd = open(name, O_RDONLY);
if (fd < 0)
return 0;
if (fstat(fd, &sbuf) < 0)
{
Err0:
close(fd);
return 0;
}
buf = (char *)malloc(sbuf.st_size+1);
if (buf == 0)
goto Err0;
buf[sbuf.st_size] = 0;
i = read(fd, buf, sbuf.st_size);
close(fd);
if (i != sbuf.st_size)
{
Err1:
free(buf);
return 0;
}
s = buf;
fnt = (Font *)malloc(sizeof(Font));
if (fnt == 0)
goto Err1;
memset((void*)fnt, 0, sizeof(Font));
fnt->name = (char *)malloc(strlen(name)+1);
if (fnt->name==0)
{
Err2:
free(fnt->name);
free(fnt);
goto Err1;
}
strcpy(fnt->name, name);
fnt->height = strtol(s, &s, 0);
s = skip(s);
fnt->ascent = strtol(s, &s, 0);
s = skip(s);
if (fnt->height<=0 || fnt->ascent<=0)
goto Err2;
fnt->width = 0;
fnt->ldepth = ldepth;
fnt->id = 0;
fnt->nsubf = 0;
fnt->subf = 0;
do {
min = strtol(s, &s, 0);
s = skip(s);
max = strtol(s, &s, 0);
s = skip(s);
if(*s==0 || min>=65536 || max>=65536 || min>max)
{
Err3:
ffree(fnt);
return 0;
}
if (fnt->subf)
fnt->subf = (Cachesubf *)realloc(fnt->subf, (fnt->nsubf+1)*sizeof(Cachesubf));
else
fnt->subf = (Cachesubf *)malloc(sizeof(Cachesubf));
if (fnt->subf == 0)
{
/* realloc manual says fnt->subf may have been destroyed */
fnt->nsubf = 0;
goto Err3;
}
c = &fnt->subf[fnt->nsubf];
c->min = min;
c->max = max;
t = s;
while (*s && *s!=' ' && *s!='\n' && *s!='\t')
s++;
*s++ = 0;
c->f = (Subfont *)0;
c->name = (char *)malloc(strlen(t)+1);
if (c->name == 0)
{
free(c);
goto Err3;
}
strcpy(c->name, t);
s = skip(s);
fnt->nsubf++;
} while(*s);
free(buf);
return fnt;
}
void
ffree(Font *f)
{
int i;
Cachesubf *c;
unsigned char *b;
for (i=0; i<f->nsubf; i++){
c = f->subf+i;
if (c->f)
subffree(c->f);
free(c->name);
free(c);
}
free(f->subf);
free(f);
}
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