1 /* $NetBSD: whatis.c,v 1.10 2023/08/03 07:49:23 rin Exp $ */
2 /*-
3 * Copyright (c) 2012 Joerg Sonnenberger <joerg@NetBSD.org>
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. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
27 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: whatis.c,v 1.10 2023/08/03 07:49:23 rin Exp $");
33
34 #include <err.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <unistd.h>
38
39 #include "apropos-utils.h"
40
41 __dead static void
usage(void)42 usage(void)
43 {
44 fprintf(stderr, "%s [-C path] ...\n", "whatis");
45 exit(EXIT_FAILURE);
46 }
47
48 static int
whatis(sqlite3 * db,const char * cmd)49 whatis(sqlite3 *db, const char *cmd)
50 {
51 static const char sqlstr[] = "SELECT link AS name, section, name_desc"
52 " FROM mandb_links WHERE link=?"
53 " UNION"
54 " SELECT name, section, name_desc"
55 " FROM mandb WHERE name MATCH ? AND name=? COLLATE NOCASE"
56 " ORDER BY section";
57 sqlite3_stmt *stmt = NULL;
58 int retval;
59 int i;
60 if (sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL) != SQLITE_OK)
61 errx(EXIT_FAILURE, "%s", sqlite3_errmsg(db));
62
63 for (i = 0; i < 3; i++) {
64 if (sqlite3_bind_text(stmt, i + 1, cmd, -1, NULL) != SQLITE_OK)
65 errx(EXIT_FAILURE, "%s", sqlite3_errmsg(db));
66 }
67
68 retval = 1;
69 while (sqlite3_step(stmt) == SQLITE_ROW) {
70 printf("%s(%s) - %s\n", sqlite3_column_text(stmt, 0),
71 sqlite3_column_text(stmt, 1),
72 sqlite3_column_text(stmt, 2));
73 retval = 0;
74 }
75 sqlite3_finalize(stmt);
76 if (retval)
77 fprintf(stderr, "%s: not found\n", cmd);
78 return retval;
79 }
80
81 int
main(int argc,char * argv[])82 main(int argc, char *argv[])
83 {
84 sqlite3 *db;
85 int ch, retval;
86 const char *manconf = MANCONF;
87
88 while ((ch = getopt(argc, argv, "C:")) != -1) {
89 switch (ch) {
90 case 'C':
91 manconf = optarg;
92 break;
93 default:
94 usage();
95 }
96 }
97 argc -= optind;
98 argv += optind;
99
100 if (argc == 0)
101 usage();
102
103 if ((db = init_db(MANDB_READONLY, manconf)) == NULL)
104 exit(EXIT_FAILURE);
105
106 retval = 0;
107 while (argc--)
108 retval |= whatis(db, *argv++);
109
110 close_db(db);
111 return retval;
112 }
113