202 lines
3.3 KiB
C
202 lines
3.3 KiB
C
/*
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* $Id: isofs_util.c,v 1.6 1993/09/16 16:54:10 ws Exp $
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*/
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#include "param.h"
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#include "systm.h"
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#include "namei.h"
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#include "resourcevar.h"
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#include "kernel.h"
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#include "file.h"
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#include "stat.h"
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#include "buf.h"
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#include "proc.h"
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#include "conf.h"
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#include "mount.h"
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#include "vnode.h"
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#include "specdev.h"
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#include "fifo.h"
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#include "malloc.h"
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#include "dir.h"
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#include "iso.h"
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#include "dirent.h"
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#include "machine/endian.h"
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#ifdef __notanymore__
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int
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isonum_711 (p)
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unsigned char *p;
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{
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return (*p);
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}
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int
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isonum_712 (p)
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signed char *p;
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{
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return (*p);
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}
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int
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isonum_721 (p)
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unsigned char *p;
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{
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/* little endian short */
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#if BYTE_ORDER != LITTLE_ENDIAN
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printf ("isonum_721 called on non little-endian machine!\n");
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#endif
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return *(short *)p;
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}
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int
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isonum_722 (p)
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unsigned char *p;
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{
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/* big endian short */
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#if BYTE_ORDER != BIG_ENDIAN
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printf ("isonum_722 called on non big-endian machine!\n");
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#endif
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return *(short *)p;
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}
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int
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isonum_723 (p)
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unsigned char *p;
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{
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#if BYTE_ORDER == BIG_ENDIAN
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return isonum_722 (p + 2);
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#elif BYTE_ORDER == LITTLE_ENDIAN
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return isonum_721 (p);
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#else
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printf ("isonum_723 unsupported byte order!\n");
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return 0;
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#endif
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}
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int
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isonum_731 (p)
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unsigned char *p;
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{
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/* little endian long */
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#if BYTE_ORDER != LITTLE_ENDIAN
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printf ("isonum_731 called on non little-endian machine!\n");
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#endif
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return *(long *)p;
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}
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int
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isonum_732 (p)
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unsigned char *p;
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{
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/* big endian long */
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#if BYTE_ORDER != BIG_ENDIAN
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printf ("isonum_732 called on non big-endian machine!\n");
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#endif
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return *(long *)p;
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}
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int
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isonum_733 (p)
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unsigned char *p;
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{
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#if BYTE_ORDER == BIG_ENDIAN
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return isonum_732 (p + 4);
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#elif BYTE_ORDER == LITTLE_ENDIAN
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return isonum_731 (p);
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#else
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printf ("isonum_733 unsupported byte order!\n");
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return 0;
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#endif
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}
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#endif /* __notanymore__ */
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/*
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* translate and compare a filename
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* Note: Version number plus ';' may be omitted.
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*/
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int
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isofncmp(unsigned char *fn,int fnlen,unsigned char *isofn,int isolen)
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{
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int i, j;
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char c;
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while (--fnlen >= 0) {
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if (--isolen < 0)
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return *fn;
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if ((c = *isofn++) == ';') {
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switch (*fn++) {
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default:
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return *--fn;
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case 0:
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return 0;
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case ';':
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break;
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}
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for (i = 0; --fnlen >= 0; i = i * 10 + *fn++ - '0') {
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if (*fn < '0' || *fn > '9') {
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return -1;
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}
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}
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for (j = 0; --isolen >= 0; j = j * 10 + *isofn++ - '0');
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return i - j;
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}
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if (c != *fn) {
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if (c >= 'A' && c <= 'Z') {
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if (c + ('a' - 'A') != *fn) {
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if (*fn >= 'a' && *fn <= 'z')
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return *fn - ('a' - 'A') - c;
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else
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return *fn - c;
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}
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} else
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return *fn - c;
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}
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fn++;
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}
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if (isolen > 0) {
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switch (*isofn) {
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default:
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return -1;
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case '.':
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if (isofn[1] != ';')
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return -1;
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case ';':
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return 0;
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}
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}
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return 0;
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}
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/*
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* translate a filename
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*/
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void
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isofntrans(unsigned char *infn,int infnlen,
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unsigned char *outfn,unsigned short *outfnlen,
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int stripgen,int assoc)
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{
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int fnidx;
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for (fnidx = 0; fnidx < infnlen; fnidx++) {
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char c = *infn++;
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if (c >= 'A' && c <= 'Z')
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*outfn++ = c + ('a' - 'A');
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else if (c == '.' && stripgen && *infn == ';')
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break;
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else if (c == ';' && stripgen)
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break;
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else
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*outfn++ = c;
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}
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if (assoc) {
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*outfn = ASSOCCHAR;
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fnidx++;
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}
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*outfnlen = fnidx;
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}
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