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/* $OpenBSD: co.c,v 1.19 2005/10/18 01:22:14 joris 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/param.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "log.h"
#include "rcs.h"
#include "rcsprog.h"
#define LOCK_LOCK 1
#define LOCK_UNLOCK 2
int
checkout_main(int argc, char **argv)
{
int i, ch;
int fflag, lock;
RCSNUM *frev, *rev;
RCSFILE *file;
char fpath[MAXPATHLEN], buf[16];
char *username;
fflag = lock = 0;
rev = RCS_HEAD_REV;
frev = NULL;
if ((username = getlogin()) == NULL) {
cvs_log(LP_ERRNO, "failed to get username");
exit (1);
}
while ((ch = rcs_getopt(argc, argv, "f::l::qr::u::V")) != -1) {
switch (ch) {
case 'f':
rcs_set_rev(rcs_optarg, &rev);
fflag = 1;
break;
case 'l':
rcs_set_rev(rcs_optarg, &rev);
lock = LOCK_LOCK;
break;
case 'q':
verbose = 0;
break;
case 'r':
rcs_set_rev(rcs_optarg, &rev);
break;
case 'u':
rcs_set_rev(rcs_optarg, &rev);
lock = LOCK_UNLOCK;
break;
case 'V':
printf("%s\n", rcs_version);
exit(0);
default:
(usage)();
exit(1);
}
}
argc -= rcs_optind;
argv += rcs_optind;
if (argc == 0) {
cvs_log(LP_ERR, "no input file");
(usage)();
exit (1);
}
for (i = 0; i < argc; i++) {
if (rcs_statfile(argv[i], fpath, sizeof(fpath)) < 0)
continue;
if ((file = rcs_open(fpath, RCS_RDWR)) == NULL)
continue;
if (rev == RCS_HEAD_REV)
frev = file->rf_head;
else
frev = rev;
rcsnum_tostr(frev, buf, sizeof(buf));
if (checkout_rev(file, frev, argv[i], lock, username, fflag) < 0) {
rcs_close(file);
continue;
}
rcs_close(file);
}
if (rev != RCS_HEAD_REV)
rcsnum_free(frev);
return (0);
}
void
checkout_usage(void)
{
fprintf(stderr,
"usage: co [-qV] [-l[rev]] [-r[rev]] [-u[rev]] file ...\n");
}
/*
* Checkout revision <rev> from RCSFILE <file>, writing it to the path <dst>
* <lkmode> is either LOCK_LOCK or LOCK_UNLOCK or something else
* (which has no effect).
* In the case of LOCK_LOCK, a lock is set for <username> if it is not NULL.
* In the case of LOCK_UNLOCK, all locks are removed for that revision.
*
* Returns 0 on success, -1 on failure.
*/
int
checkout_rev(RCSFILE *file, RCSNUM *frev, const char *dst, int lkmode,
const char *username, int force)
{
char buf[16], yn;
mode_t mode = 0444;
BUF *bp;
struct stat st;
/*
* Check out the latest revision if <frev> is greater than HEAD
*/
if (rcsnum_cmp(frev, file->rf_head, 0) == -1)
frev = file->rf_head;
rcsnum_tostr(frev, buf, sizeof(buf));
if (verbose == 1)
printf("revision %s", buf);
if ((bp = rcs_getrev(file, frev)) == NULL) {
cvs_log(LP_ERR, "cannot find revision `%s'", buf);
return (-1);
}
if (lkmode == LOCK_LOCK) {
if ((username != NULL)
&& (rcs_lock_add(file, username, frev) < 0)) {
if (rcs_errno != RCS_ERR_DUPENT)
cvs_log(LP_ERR, "failed to lock '%s'", buf);
else
cvs_log(LP_WARN, "you already have a lock");
}
mode = 0644;
if (verbose == 1)
printf(" (locked)");
} else if (lkmode == LOCK_UNLOCK) {
if (rcs_lock_remove(file, frev) < 0) {
if (rcs_errno != RCS_ERR_NOENT)
cvs_log(LP_ERR,
"failed to remove lock '%s'", buf);
}
mode = 0444;
if (verbose == 1)
printf(" (unlocked)");
}
if (verbose == 1)
printf("\n");
if ((stat(dst, &st) != -1) && force == 0) {
if (st.st_mode & S_IWUSR) {
yn = 0;
while (yn != 'y' && yn != 'n') {
printf("writeable '%s' exists; ", dst);
printf("remove it? [ny] (n):");
fflush(stdout);
yn = getchar();
}
if (yn == 'n') {
if (verbose == 1)
cvs_log(LP_ERR, "checkout aborted");
return (-1);
}
}
}
if (cvs_buf_write(bp, dst, mode) < 0) {
cvs_log(LP_ERR, "failed to write revision to file");
cvs_buf_free(bp);
return (-1);
}
cvs_buf_free(bp);
if (verbose == 1)
printf("done\n");
return (0);
}
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