136 lines
1.8 KiB
C
136 lines
1.8 KiB
C
/*
|
|
* $Id: isofs_util.c,v 1.3 1993/07/19 13:40:08 cgd Exp $
|
|
*/
|
|
|
|
int
|
|
isonum_711 (p)
|
|
char *p;
|
|
{
|
|
return (*p & 0xff);
|
|
}
|
|
|
|
int
|
|
isonum_712 (p)
|
|
char *p;
|
|
{
|
|
int val;
|
|
|
|
val = *p;
|
|
if (val & 0x80)
|
|
val |= 0xffffff00;
|
|
return (val);
|
|
}
|
|
|
|
int
|
|
isonum_721 (p)
|
|
char *p;
|
|
{
|
|
return ((p[0] & 0xff) | ((p[1] & 0xff) << 8));
|
|
}
|
|
|
|
int
|
|
isonum_722 (p)
|
|
char *p;
|
|
{
|
|
return (((p[0] & 0xff) << 8) | (p[1] & 0xff));
|
|
}
|
|
|
|
int
|
|
isonum_723 (p)
|
|
char *p;
|
|
{
|
|
#if 0
|
|
if (p[0] != p[3] || p[1] != p[2]) {
|
|
fprintf (stderr, "invalid format 7.2.3 number\n");
|
|
exit (1);
|
|
}
|
|
#endif
|
|
return (isonum_721 (p));
|
|
}
|
|
|
|
int
|
|
isonum_731 (p)
|
|
unsigned char *p;
|
|
{
|
|
return ((p[0] & 0xff)
|
|
| ((p[1] & 0xff) << 8)
|
|
| ((p[2] & 0xff) << 16)
|
|
| ((p[3] & 0xff) << 24));
|
|
}
|
|
|
|
int
|
|
isonum_732 (p)
|
|
unsigned char *p;
|
|
{
|
|
return (((p[0] & 0xff) << 24)
|
|
| ((p[1] & 0xff) << 16)
|
|
| ((p[2] & 0xff) << 8)
|
|
| (p[3] & 0xff));
|
|
}
|
|
|
|
int
|
|
isonum_733 (p)
|
|
unsigned char *p;
|
|
{
|
|
int i;
|
|
|
|
#if 0
|
|
for (i = 0; i < 4; i++) {
|
|
if (p[i] != p[7-i]) {
|
|
fprintf (stderr, "bad format 7.3.3 number\n");
|
|
exit (1);
|
|
}
|
|
}
|
|
#endif
|
|
return (isonum_731 (p));
|
|
}
|
|
|
|
/*
|
|
* translate and compare a filename
|
|
*/
|
|
isofncmp(char *fn, int fnlen, char *isofn, int isolen) {
|
|
int fnidx;
|
|
|
|
fnidx = 0;
|
|
for (fnidx = 0; fnidx < isolen; fnidx++, fn++) {
|
|
char c = *isofn++;
|
|
|
|
if (fnidx > fnlen)
|
|
return (0);
|
|
|
|
if (c >= 'A' && c <= 'Z') {
|
|
if (c + ('a' - 'A') != *fn)
|
|
return(0);
|
|
else
|
|
continue;
|
|
}
|
|
if (c == ';')
|
|
return ((fnidx == fnlen));
|
|
if (c != *fn)
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* translate a filename
|
|
*/
|
|
void
|
|
isofntrans(char *infn, int infnlen, char *outfn, short *outfnlen) {
|
|
int fnidx;
|
|
|
|
fnidx = 0;
|
|
for (fnidx = 0; fnidx < infnlen; fnidx++) {
|
|
char c = *infn++;
|
|
|
|
if (c >= 'A' && c <= 'Z')
|
|
*outfn++ = c + ('a' - 'A');
|
|
else if (c == ';') {
|
|
*outfnlen = fnidx;
|
|
return;
|
|
} else
|
|
*outfn++ = c;
|
|
}
|
|
*outfnlen = infnlen;
|
|
}
|