Annotation of src/usr.bin/whatis/whatis.c, Revision 1.5
1.5 ! millert 1: /* $OpenBSD: whatis.c,v 1.4 1997/11/30 05:30:37 deraadt Exp $ */
1.2 deraadt 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1987, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: static char copyright[] =
38: "@(#) Copyright (c) 1987, 1993\n\
39: The Regents of the University of California. All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: static char sccsid[] = "@(#)whatis.c 8.5 (Berkeley) 11/26/93";
44: #endif /* not lint */
45:
46: #include <sys/param.h>
47: #include <sys/queue.h>
48:
49: #include <ctype.h>
50: #include <err.h>
51: #include <stdio.h>
52: #include <stdlib.h>
53: #include <string.h>
54:
55: #include "../man/config.h"
56: #include "../man/pathnames.h"
57:
1.4 deraadt 58: #define MAXLINELEN 8192 /* max line handled */
1.1 deraadt 59:
60: static int *found, foundman;
1.5 ! millert 61: extern char *__progname;
1.1 deraadt 62:
63: void dashtrunc __P((char *, char *));
64: int match __P((char *, char *));
65: void usage __P((void));
66: void whatis __P((char **, char *, int));
67:
68: int
69: main(argc, argv)
70: int argc;
71: char *argv[];
72: {
73: ENTRY *ep;
74: TAG *tp;
75: int ch, rv;
76: char *beg, *conffile, **p, *p_augment, *p_path;
77:
78: conffile = NULL;
79: p_augment = p_path = NULL;
1.3 millert 80: while ((ch = getopt(argc, argv, "C:M:m:P:")) != -1)
1.1 deraadt 81: switch (ch) {
82: case 'C':
83: conffile = optarg;
84: break;
85: case 'M':
86: case 'P': /* backward compatible */
87: p_path = optarg;
88: break;
89: case 'm':
90: p_augment = optarg;
91: break;
92: case '?':
93: default:
94: usage();
95: }
96: argv += optind;
97: argc -= optind;
98:
99: if (argc < 1)
100: usage();
101:
102: if ((found = malloc((u_int)argc * sizeof(int))) == NULL)
103: err(1, NULL);
104: memset(found, 0, argc * sizeof(int));
105:
106: for (p = argv; *p; ++p) /* trim full paths */
1.5 ! millert 107: if ((beg = strrchr(*p, '/')))
1.1 deraadt 108: *p = beg + 1;
109:
110: if (p_augment)
111: whatis(argv, p_augment, 1);
112: if (p_path || (p_path = getenv("MANPATH")))
113: whatis(argv, p_path, 1);
114: else {
115: config(conffile);
116: ep = (tp = getlist("_whatdb")) == NULL ?
117: NULL : tp->list.tqh_first;
118: for (; ep != NULL; ep = ep->q.tqe_next)
119: whatis(argv, ep->s, 0);
120: }
121:
122: if (!foundman) {
123: fprintf(stderr, "whatis: no %s file found.\n", _PATH_WHATIS);
124: exit(1);
125: }
126: rv = 1;
127: for (p = argv; *p; ++p)
128: if (found[p - argv])
129: rv = 0;
130: else
131: printf("%s: not found\n", *p);
132: exit(rv);
133: }
134:
135: void
136: whatis(argv, path, buildpath)
137: char **argv, *path;
138: int buildpath;
139: {
140: register char *end, *name, **p;
141: char buf[MAXLINELEN + 1], wbuf[MAXLINELEN + 1];
1.4 deraadt 142: char hold[MAXPATHLEN];
1.1 deraadt 143:
144: for (name = path; name; name = end) { /* through name list */
1.5 ! millert 145: if ((end = strchr(name, ':')))
1.1 deraadt 146: *end++ = '\0';
147:
148: if (buildpath) {
1.4 deraadt 149: (void)snprintf(hold, sizeof hold, "%s/%s",
150: name, _PATH_WHATIS);
1.1 deraadt 151: name = hold;
152: }
153:
154: if (!freopen(name, "r", stdin))
155: continue;
156:
157: foundman = 1;
158:
159: /* for each file found */
160: while (fgets(buf, sizeof(buf), stdin)) {
161: dashtrunc(buf, wbuf);
162: for (p = argv; *p; ++p)
163: if (match(wbuf, *p)) {
164: printf("%s", buf);
165: found[p - argv] = 1;
166:
167: /* only print line once */
168: while (*++p)
169: if (match(wbuf, *p))
170: found[p - argv] = 1;
171: break;
172: }
173: }
174: }
175: }
176:
177: /*
178: * match --
1.5 ! millert 179: * match a full word or a full string
1.1 deraadt 180: */
181: int
182: match(bp, str)
183: register char *bp, *str;
184: {
185: register int len;
186: register char *start;
187:
188: if (!*str || !*bp)
189: return(0);
190: for (len = strlen(str);;) {
1.5 ! millert 191: /* skip leading crud */
! 192: for (; *bp && !isalnum(*bp); ++bp)
! 193: ;
1.1 deraadt 194: if (!*bp)
195: break;
1.5 ! millert 196:
! 197: /* check for word match first */
! 198: for (start = bp++; *bp && (*bp == '_' || isalnum(*bp)); ++bp)
! 199: ;
! 200: if (bp - start == len) {
! 201: if (strncasecmp(start, str, len) == 0)
! 202: return(1);
! 203: } else if (*bp && *bp != ',') {
! 204: /* check for full string match */
! 205: for (bp = start;
! 206: *bp && *bp != ',' && *bp != '(' && !isspace(*bp); ++bp)
! 207: ;
! 208: if (bp - start == len && strncasecmp(start, str, len) == 0)
! 209: return(1);
! 210: }
1.1 deraadt 211: }
212: return(0);
213: }
214:
215: /*
216: * dashtrunc --
217: * truncate a string at " - "
218: */
219: void
220: dashtrunc(from, to)
221: register char *from, *to;
222: {
223: register int ch;
224:
225: for (; (ch = *from) && ch != '\n' &&
226: (ch != ' ' || from[1] != '-' || from[2] != ' '); ++from)
227: *to++ = ch;
228: *to = '\0';
229: }
230:
231: /*
232: * usage --
233: * print usage message and die
234: */
235: void
236: usage()
237: {
1.5 ! millert 238:
1.1 deraadt 239: (void)fprintf(stderr,
1.5 ! millert 240: "usage: %s [-C file] [-M path] [-m path] command ...\n",
! 241: __progname);
1.1 deraadt 242: exit(1);
243: }
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