Annotation of src/usr.bin/rcs/rcsmerge.c, Revision 1.55
1.55 ! deraadt 1: /* $OpenBSD: rcsmerge.c,v 1.54 2014/10/10 08:15:25 otto Exp $ */
1.1 xsa 2: /*
1.14 xsa 3: * Copyright (c) 2005, 2006 Xavier Santolaria <xsa@openbsd.org>
1.1 xsa 4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
1.50 xsa 27: #include <err.h>
28: #include <stdio.h>
29: #include <stdlib.h>
30: #include <string.h>
31: #include <unistd.h>
1.1 xsa 32:
1.13 xsa 33: #include "rcsprog.h"
1.1 xsa 34: #include "diff.h"
35:
36: int
37: rcsmerge_main(int argc, char **argv)
38: {
1.44 xsa 39: int fd, ch, flags, kflag, status;
1.55 ! deraadt 40: char fpath[PATH_MAX], r1[RCS_REV_BUFSZ], r2[RCS_REV_BUFSZ];
1.51 xsa 41: char *rev_str1, *rev_str2;
1.1 xsa 42: RCSFILE *file;
1.24 ray 43: RCSNUM *rev1, *rev2;
1.2 joris 44: BUF *bp;
1.1 xsa 45:
1.27 xsa 46: flags = 0;
1.44 xsa 47: status = D_ERROR;
1.24 ray 48: rev1 = rev2 = NULL;
49: rev_str1 = rev_str2 = NULL;
1.1 xsa 50:
1.34 ray 51: while ((ch = rcs_getopt(argc, argv, "AEek:p::q::r::TVx::z:")) != -1) {
1.1 xsa 52: switch (ch) {
1.48 xsa 53: case 'A':
54: /*
55: * kept for compatibility
56: */
57: break;
58: case 'E':
59: flags |= MERGE_EFLAG;
60: flags |= MERGE_OFLAG;
61: break;
62: case 'e':
63: flags |= MERGE_EFLAG;
1.14 xsa 64: break;
1.1 xsa 65: case 'k':
66: kflag = rcs_kflag_get(rcs_optarg);
67: if (RCS_KWEXP_INVAL(kflag)) {
1.31 xsa 68: warnx("invalid RCS keyword substitution mode");
1.1 xsa 69: (usage)();
70: }
71: break;
1.2 joris 72: case 'p':
1.24 ray 73: rcs_setrevstr2(&rev_str1, &rev_str2, rcs_optarg);
1.28 xsa 74: flags |= PIPEOUT;
1.2 joris 75: break;
1.1 xsa 76: case 'q':
1.24 ray 77: rcs_setrevstr2(&rev_str1, &rev_str2, rcs_optarg);
1.27 xsa 78: flags |= QUIET;
1.1 xsa 79: break;
80: case 'r':
1.34 ray 81: rcs_setrevstr2(&rev_str1, &rev_str2,
82: rcs_optarg ? rcs_optarg : "");
1.1 xsa 83: break;
84: case 'T':
85: /*
86: * kept for compatibility
87: */
88: break;
89: case 'V':
90: printf("%s\n", rcs_version);
91: exit(0);
1.9 xsa 92: case 'x':
1.23 ray 93: /* Use blank extension if none given. */
94: rcs_suffixes = rcs_optarg ? rcs_optarg : "";
1.17 joris 95: break;
96: case 'z':
97: timezone_flag = rcs_optarg;
1.9 xsa 98: break;
1.1 xsa 99: default:
1.26 ray 100: (usage)();
1.1 xsa 101: }
102: }
103:
104: argc -= rcs_optind;
105: argv += rcs_optind;
106:
1.44 xsa 107: if (rev_str1 == NULL) {
108: warnx("no base revision number given");
1.1 xsa 109: (usage)();
110: }
111:
1.44 xsa 112: if (argc < 1) {
113: warnx("no input file");
1.2 joris 114: (usage)();
115: }
116:
1.44 xsa 117: if (argc > 2 || (argc == 2 && argv[1] != NULL))
118: warnx("warning: excess arguments ignored");
119:
1.46 ray 120: if ((fd = rcs_choosefile(argv[0], fpath, sizeof(fpath))) < 0)
1.49 niallo 121: err(status, "%s", fpath);
1.24 ray 122:
1.44 xsa 123: if (!(flags & QUIET))
124: (void)fprintf(stderr, "RCS file: %s\n", fpath);
1.8 xsa 125:
1.44 xsa 126: if ((file = rcs_open(fpath, fd, RCS_READ)) == NULL)
127: return (status);
128:
129: if (strcmp(rev_str1, "") == 0) {
130: rev1 = rcsnum_alloc();
131: rcsnum_cpy(file->rf_head, rev1, 0);
132: } else if ((rev1 = rcs_getrevnum(rev_str1, file)) == NULL)
133: errx(D_ERROR, "invalid revision: %s", rev_str1);
134:
135: if (rev_str2 != NULL && strcmp(rev_str2, "") != 0) {
136: if ((rev2 = rcs_getrevnum(rev_str2, file)) == NULL)
137: errx(D_ERROR, "invalid revision: %s", rev_str2);
138: } else {
139: rev2 = rcsnum_alloc();
140: rcsnum_cpy(file->rf_head, rev2, 0);
141: }
1.15 xsa 142:
1.44 xsa 143: if (rcsnum_cmp(rev1, rev2, 0) == 0)
144: goto out;
1.2 joris 145:
1.48 xsa 146: if ((bp = rcs_diff3(file, argv[0], rev1, rev2, flags)) == NULL)
1.45 xsa 147: errx(D_ERROR, "failed to merge");
1.2 joris 148:
1.44 xsa 149: if (!(flags & QUIET)) {
150: (void)rcsnum_tostr(rev1, r1, sizeof(r1));
151: (void)rcsnum_tostr(rev2, r2, sizeof(r2));
152:
153: (void)fprintf(stderr, "Merging differences between %s and "
154: "%s into %s%s\n", r1, r2, argv[0],
155: (flags & PIPEOUT) ? "; result to stdout":"");
156: }
1.41 xsa 157:
1.44 xsa 158: if (diff3_conflicts != 0)
159: status = D_OVERLAPS;
160: else
161: status = 0;
162:
1.47 ray 163: if (flags & PIPEOUT)
1.52 ray 164: buf_write_fd(bp, STDOUT_FILENO);
1.47 ray 165: else {
1.44 xsa 166: /* XXX mode */
1.52 ray 167: if (buf_write(bp, argv[0], 0644) < 0)
168: warnx("buf_write failed");
1.2 joris 169:
1.1 xsa 170: }
1.47 ray 171:
1.52 ray 172: buf_free(bp);
1.44 xsa 173:
174: out:
175: rcs_close(file);
176:
177: if (rev1 != NULL)
178: rcsnum_free(rev1);
179: if (rev2 != NULL)
180: rcsnum_free(rev2);
1.1 xsa 181:
1.41 xsa 182: return (status);
1.1 xsa 183: }
184:
1.53 otto 185: __dead void
1.1 xsa 186: rcsmerge_usage(void)
187: {
188: fprintf(stderr,
1.43 jmc 189: "usage: rcsmerge [-EV] [-kmode] [-p[rev]] [-q[rev]]\n"
1.32 jmc 190: " [-xsuffixes] [-ztz] -rrev file ...\n");
1.53 otto 191:
192: exit(D_ERROR);
1.1 xsa 193: }
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