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/* $OpenBSD: rcsclean.c,v 1.53 2014/10/02 06:23:15 otto Exp $ */
/*
* Copyright (c) 2005 Joris Vink <joris@openbsd.org>
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
*/
#include <sys/types.h>
#include <dirent.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "rcsprog.h"
#include "diff.h"
static void rcsclean_file(char *, const char *);
static int nflag = 0;
static int kflag = RCS_KWEXP_ERR;
static int uflag = 0;
static int flags = 0;
static char *locker = NULL;
int
rcsclean_main(int argc, char **argv)
{
int i, ch;
char *rev_str;
DIR *dirp;
struct dirent *dp;
rev_str = NULL;
while ((ch = rcs_getopt(argc, argv, "k:n::q::r::Tu::Vx::")) != -1) {
switch (ch) {
case 'k':
kflag = rcs_kflag_get(rcs_optarg);
if (RCS_KWEXP_INVAL(kflag)) {
warnx("invalid RCS keyword substitution mode");
(usage)();
}
break;
case 'n':
rcs_setrevstr(&rev_str, rcs_optarg);
nflag = 1;
break;
case 'q':
rcs_setrevstr(&rev_str, rcs_optarg);
flags |= QUIET;
break;
case 'r':
rcs_setrevstr(&rev_str, rcs_optarg);
break;
case 'T':
flags |= PRESERVETIME;
break;
case 'u':
rcs_setrevstr(&rev_str, rcs_optarg);
uflag = 1;
break;
case 'V':
printf("%s\n", rcs_version);
exit(0);
case 'x':
/* Use blank extension if none given. */
rcs_suffixes = rcs_optarg ? rcs_optarg : "";
break;
default:
(usage)();
}
}
argc -= rcs_optind;
argv += rcs_optind;
if ((locker = getlogin()) == NULL)
err(1, "getlogin");
if (argc == 0) {
if ((dirp = opendir(".")) == NULL) {
warn("opendir");
(usage)();
}
while ((dp = readdir(dirp)) != NULL) {
if (dp->d_type == DT_DIR)
continue;
rcsclean_file(dp->d_name, rev_str);
}
(void)closedir(dirp);
} else
for (i = 0; i < argc; i++)
rcsclean_file(argv[i], rev_str);
return (0);
}
__dead void
rcsclean_usage(void)
{
fprintf(stderr,
"usage: rcsclean [-TV] [-kmode] [-n[rev]] [-q[rev]] [-r[rev]]\n"
" [-u[rev]] [-xsuffixes] [-ztz] [file ...]\n");
exit(1);
}
static void
rcsclean_file(char *fname, const char *rev_str)
{
int fd, match;
RCSFILE *file;
char fpath[MAXPATHLEN], numb[RCS_REV_BUFSZ];
RCSNUM *rev;
BUF *b1, *b2;
time_t rcs_mtime = -1;
b1 = b2 = NULL;
file = NULL;
rev = NULL;
if ((fd = rcs_choosefile(fname, fpath, sizeof(fpath))) < 0)
goto out;
if ((file = rcs_open(fpath, fd, RCS_RDWR)) == NULL)
goto out;
if (flags & PRESERVETIME)
rcs_mtime = rcs_get_mtime(file);
rcs_kwexp_set(file, kflag);
if (rev_str == NULL)
rev = file->rf_head;
else if ((rev = rcs_getrevnum(rev_str, file)) == NULL) {
warnx("%s: Symbolic name `%s' is undefined.", fpath, rev_str);
goto out;
}
if ((b1 = rcs_getrev(file, rev)) == NULL) {
warnx("failed to get needed revision");
goto out;
}
if ((b2 = buf_load(fname)) == NULL) {
warnx("failed to load `%s'", fname);
goto out;
}
/* If buffer lengths are the same, compare contents as well. */
if (buf_len(b1) != buf_len(b2))
match = 0;
else {
size_t len, n;
len = buf_len(b1);
match = 1;
for (n = 0; n < len; ++n)
if (buf_getc(b1, n) != buf_getc(b2, n)) {
match = 0;
break;
}
}
if (match == 1) {
if (uflag == 1 && !TAILQ_EMPTY(&(file->rf_locks))) {
if (!(flags & QUIET) && nflag == 0) {
printf("rcs -u%s %s\n",
rcsnum_tostr(rev, numb, sizeof(numb)),
fpath);
}
(void)rcs_lock_remove(file, locker, rev);
}
if (TAILQ_EMPTY(&(file->rf_locks))) {
if (!(flags & QUIET))
printf("rm -f %s\n", fname);
if (nflag == 0)
(void)unlink(fname);
}
}
rcs_write(file);
if (flags & PRESERVETIME)
rcs_set_mtime(file, rcs_mtime);
out:
if (b1 != NULL)
buf_free(b1);
if (b2 != NULL)
buf_free(b2);
if (file != NULL)
rcs_close(file);
}
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