static void do_load(int fd, struct psf_header *psfhdr, size_t len)
{
int unit;
int fontsize;
int hastable;
unsigned head0, head = head;
/* test for psf first */
if (len >= sizeof(struct psf_header) && PSF_MAGIC_OK(psfhdr)) {
if (psfhdr->mode > PSF_MAXMODE)
bb_error_msg_and_die("unsupported psf file mode");
fontsize = ((psfhdr->mode & PSF_MODE512) ? 512 : 256);
#if !defined(PIO_FONTX) || defined(__sparc__)
if (fontsize != 256)
bb_error_msg_and_die("only fontsize 256 supported");
#endif
hastable = (psfhdr->mode & PSF_MODEHASTAB);
unit = psfhdr->charsize;
head0 = sizeof(struct psf_header);
head = head0 + fontsize * unit;
if (head > len || (!hastable && head != len))
bb_error_msg_and_die("input file: bad length");
} else {
/* file with three code pages? */
if (len == 9780) {
head0 = 40;
unit = 16;
} else {
/* bare font */
if (len & 0377)
bb_error_msg_and_die("input file: bad length");
head0 = 0;
unit = len / 256;
}
fontsize = 256;
hastable = 0;
}
do_loadfont(fd, (unsigned char *)psfhdr + head0, unit, fontsize);
if (hastable)
do_loadtable(fd, (unsigned char *)psfhdr + head, len - head, fontsize);
}
static void loadnewfont(int fd)
{
int unit;
char inbuf[32768]; /* primitive */
unsigned int inputlth, offset;
/*
* We used to look at the length of the input file
* with stat(); now that we accept compressed files,
* just read the entire file.
*/
inputlth = fread(inbuf, 1, sizeof(inbuf), stdin);
if (ferror(stdin))
perror_msg_and_die("Error reading input font");
/* use malloc/realloc in case of giant files;
maybe these do not occur: 16kB for the font,
and 16kB for the map leaves 32 unicode values
for each font position */
if (!feof(stdin))
perror_msg_and_die("Font too large");
/* test for psf first */
{
struct psf_header psfhdr;
int fontsize;
int hastable;
unsigned int head0, head;
if (inputlth < sizeof(struct psf_header))
goto no_psf;
psfhdr = *(struct psf_header *) &inbuf[0];
if (!PSF_MAGIC_OK(psfhdr))
goto no_psf;
if (psfhdr.mode > PSF_MAXMODE)
error_msg_and_die("Unsupported psf file mode");
fontsize = ((psfhdr.mode & PSF_MODE512) ? 512 : 256);
#if !defined( PIO_FONTX ) || defined( __sparc__ )
if (fontsize != 256)
error_msg_and_die("Only fontsize 256 supported");
#endif
hastable = (psfhdr.mode & PSF_MODEHASTAB);
unit = psfhdr.charsize;
head0 = sizeof(struct psf_header);
head = head0 + fontsize * unit;
if (head > inputlth || (!hastable && head != inputlth))
error_msg_and_die("Input file: bad length");
do_loadfont(fd, inbuf + head0, unit, fontsize);
if (hastable)
do_loadtable(fd, inbuf + head, inputlth - head, fontsize);
return;
}
no_psf:
/* file with three code pages? */
if (inputlth == 9780) {
offset = 40;
unit = 16;
} else {
/* bare font */
if (inputlth & 0377)
error_msg_and_die("Bad input file size");
offset = 0;
unit = inputlth / 256;
}
do_loadfont(fd, inbuf + offset, unit, 256);
}
