diff options
Diffstat (limited to 'sys/fs/cd9660/cd9660_util.c')
| -rw-r--r-- | sys/fs/cd9660/cd9660_util.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/sys/fs/cd9660/cd9660_util.c b/sys/fs/cd9660/cd9660_util.c new file mode 100644 index 0000000..2a11dc2 --- /dev/null +++ b/sys/fs/cd9660/cd9660_util.c @@ -0,0 +1,175 @@ +/*- + * Copyright (c) 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley + * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension + * Support code is derived from software contributed to Berkeley + * by Atsushi Murai (amurai@spec.co.jp). Joliet support was added by + * Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de). + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94 + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/vnode.h> + +#include <isofs/cd9660/iso.h> + +/* + * Get one character out of an iso filename + * Obey joliet_level + * Return number of bytes consumed + */ +int +isochar(isofn, isoend, joliet_level, c) + u_char *isofn; + u_char *isoend; + int joliet_level; + u_char *c; +{ + *c = *isofn++; + if (joliet_level == 0 || isofn == isoend) + /* (00) and (01) are one byte in Joliet, too */ + return 1; + + /* No Unicode support yet :-( */ + switch (*c) { + default: + *c = '?'; + break; + case '\0': + *c = *isofn; + break; + } + return 2; +} + +/* + * translate and compare a filename + * returns (fn - isofn) + * Note: Version number plus ';' may be omitted. + */ +int +isofncmp(fn, fnlen, isofn, isolen, joliet_level) + u_char *fn; + int fnlen; + u_char *isofn; + int isolen; + int joliet_level; +{ + int i, j; + u_char c, *fnend = fn + fnlen, *isoend = isofn + isolen; + + for (; fn != fnend; fn++) { + if (isofn == isoend) + return *fn; + isofn += isochar(isofn, isoend, joliet_level, &c); + if (c == ';') { + if (*fn++ != ';') + return fn[-1]; + for (i = 0; fn != fnend; i = i * 10 + *fn++ - '0') { + if (*fn < '0' || *fn > '9') { + return -1; + } + } + for (j = 0; isofn != isoend; j = j * 10 + c - '0') + isofn += isochar(isofn, isoend, + joliet_level, &c); + return i - j; + } + if (c != *fn) { + if (c >= 'A' && c <= 'Z') { + if (c + ('a' - 'A') != *fn) { + if (*fn >= 'a' && *fn <= 'z') + return *fn - ('a' - 'A') - c; + else + return *fn - c; + } + } else + return *fn - c; + } + } + if (isofn != isoend) { + isofn += isochar(isofn, isoend, joliet_level, &c); + switch (c) { + default: + return -c; + case '.': + if (isofn != isoend) { + isochar(isofn, isoend, joliet_level, &c); + if (c == ';') + return 0; + } + return -1; + case ';': + return 0; + } + } + return 0; +} + +/* + * translate a filename of length > 0 + */ +void +isofntrans(infn, infnlen, outfn, outfnlen, original, assoc, joliet_level) + u_char *infn; + int infnlen; + u_char *outfn; + u_short *outfnlen; + int original; + int assoc; + int joliet_level; +{ + int fnidx = 0; + u_char c, d = '\0', *infnend = infn + infnlen; + + if (assoc) { + *outfn++ = ASSOCCHAR; + fnidx++; + } + for (; infn != infnend; fnidx++) { + infn += isochar(infn, infnend, joliet_level, &c); + + if (!original && !joliet_level && c >= 'A' && c <= 'Z') + *outfn++ = c + ('a' - 'A'); + else if (!original && c == ';') { + fnidx -= (d == '.'); + break; + } else + *outfn++ = c; + d = c; + } + *outfnlen = fnidx; +} |
