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/* $OpenBSD: rcsmerge.c,v 1.50 2007/02/27 07:59:13 xsa Exp $ */
/*
* Copyright (c) 2005, 2006 Xavier Santolaria <xsa@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 <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "rcsprog.h"
#include "diff.h"
int
rcsmerge_main(int argc, char **argv)
{
int fd, ch, flags, kflag, status;
char fpath[MAXPATHLEN], r1[16], r2[16], *rev_str1, *rev_str2;
RCSFILE *file;
RCSNUM *rev1, *rev2;
BUF *bp;
flags = 0;
kflag = RCS_KWEXP_ERR;
status = D_ERROR;
rev1 = rev2 = NULL;
rev_str1 = rev_str2 = NULL;
while ((ch = rcs_getopt(argc, argv, "AEek:p::q::r::TVx::z:")) != -1) {
switch (ch) {
case 'A':
/*
* kept for compatibility
*/
break;
case 'E':
flags |= MERGE_EFLAG;
flags |= MERGE_OFLAG;
break;
case 'e':
flags |= MERGE_EFLAG;
break;
case 'k':
kflag = rcs_kflag_get(rcs_optarg);
if (RCS_KWEXP_INVAL(kflag)) {
warnx("invalid RCS keyword substitution mode");
(usage)();
exit(D_ERROR);
}
break;
case 'p':
rcs_setrevstr2(&rev_str1, &rev_str2, rcs_optarg);
flags |= PIPEOUT;
break;
case 'q':
rcs_setrevstr2(&rev_str1, &rev_str2, rcs_optarg);
flags |= QUIET;
break;
case 'r':
rcs_setrevstr2(&rev_str1, &rev_str2,
rcs_optarg ? rcs_optarg : "");
break;
case 'T':
/*
* kept for compatibility
*/
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;
case 'z':
timezone_flag = rcs_optarg;
break;
default:
(usage)();
exit(D_ERROR);
}
}
argc -= rcs_optind;
argv += rcs_optind;
if (rev_str1 == NULL) {
warnx("no base revision number given");
(usage)();
exit(D_ERROR);
}
if (argc < 1) {
warnx("no input file");
(usage)();
exit(D_ERROR);
}
if (argc > 2 || (argc == 2 && argv[1] != NULL))
warnx("warning: excess arguments ignored");
if ((fd = rcs_choosefile(argv[0], fpath, sizeof(fpath))) < 0)
err(status, "%s", fpath);
if (!(flags & QUIET))
(void)fprintf(stderr, "RCS file: %s\n", fpath);
if ((file = rcs_open(fpath, fd, RCS_READ)) == NULL)
return (status);
if (strcmp(rev_str1, "") == 0) {
rev1 = rcsnum_alloc();
rcsnum_cpy(file->rf_head, rev1, 0);
} else if ((rev1 = rcs_getrevnum(rev_str1, file)) == NULL)
errx(D_ERROR, "invalid revision: %s", rev_str1);
if (rev_str2 != NULL && strcmp(rev_str2, "") != 0) {
if ((rev2 = rcs_getrevnum(rev_str2, file)) == NULL)
errx(D_ERROR, "invalid revision: %s", rev_str2);
} else {
rev2 = rcsnum_alloc();
rcsnum_cpy(file->rf_head, rev2, 0);
}
if (rcsnum_cmp(rev1, rev2, 0) == 0)
goto out;
if ((bp = rcs_diff3(file, argv[0], rev1, rev2, flags)) == NULL)
errx(D_ERROR, "failed to merge");
if (!(flags & QUIET)) {
(void)rcsnum_tostr(rev1, r1, sizeof(r1));
(void)rcsnum_tostr(rev2, r2, sizeof(r2));
(void)fprintf(stderr, "Merging differences between %s and "
"%s into %s%s\n", r1, r2, argv[0],
(flags & PIPEOUT) ? "; result to stdout":"");
}
if (diff3_conflicts != 0)
status = D_OVERLAPS;
else
status = 0;
if (flags & PIPEOUT)
rcs_buf_write_fd(bp, STDOUT_FILENO);
else {
/* XXX mode */
if (rcs_buf_write(bp, argv[0], 0644) < 0)
warnx("rcs_buf_write failed");
}
rcs_buf_free(bp);
out:
rcs_close(file);
if (rev1 != NULL)
rcsnum_free(rev1);
if (rev2 != NULL)
rcsnum_free(rev2);
return (status);
}
void
rcsmerge_usage(void)
{
fprintf(stderr,
"usage: rcsmerge [-EV] [-kmode] [-p[rev]] [-q[rev]]\n"
" [-xsuffixes] [-ztz] -rrev file ...\n");
}
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