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/* $OpenBSD: merge.c,v 1.7 2010/07/23 21:46:05 ray Exp $ */
/*
* Copyright (c) 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 <unistd.h>
#include "rcsprog.h"
#include "diff.h"
int
merge_main(int argc, char **argv)
{
int ch, flags, labels, status;
const char *label[3];
BUF *bp;
flags = labels = 0;
status = D_ERROR;
/*
* Using getopt(3) and not rcs_getopt() because merge(1)
* allows spaces between options and their arguments.
* Thus staying compatible with former implementation.
*/
while ((ch = getopt(argc, argv, "AEeL:pqV")) != -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 'L':
if (3 <= labels)
errx(D_ERROR, "too many -L options");
label[labels++] = optarg;
break;
case 'p':
flags |= PIPEOUT;
break;
case 'q':
flags |= QUIET;
break;
case 'V':
printf("%s\n", rcs_version);
exit(0);
default:
(usage)();
exit(D_ERROR);
}
}
argc -= optind;
argv += optind;
if (argc != 3) {
warnx("%s arguments", (argc < 3) ? "not enough" : "too many");
(usage)();
exit(D_ERROR);
}
for (; labels < 3; labels++)
label[labels] = argv[labels];
/* XXX handle labels */
if ((bp = merge_diff3(argv, flags)) == NULL)
errx(D_ERROR, "failed to merge");
if (diff3_conflicts != 0)
status = D_OVERLAPS;
else
status = 0;
if (flags & PIPEOUT)
buf_write_fd(bp, STDOUT_FILENO);
else {
/* XXX */
if (buf_write(bp, argv[0], 0644) < 0)
warnx("buf_write failed");
}
buf_free(bp);
return (status);
}
void
merge_usage(void)
{
(void)fprintf(stderr,
"usage: merge [-EepqV] [-L label] file1 file2 file3\n");
}
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