whatis.c revision 1.2 
1/*	$NetBSD: whatis.c,v 1.2 2012/02/07 19:17:16 joerg 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 1.2 2012/02/07 19:17:16 joerg 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
42usage(void)
43{
44	fprintf(stderr, "%s ...\n", "whatis");
45	exit(EXIT_FAILURE);
46}
47
48static int
49whatis(sqlite3 *db, const char *cmd)
50{
51	static const char sqlstr[] = "SELECT name, section, name_desc"
52				     " FROM mandb WHERE name=?"
53				     " ORDER BY section, name";
54	sqlite3_stmt *stmt = NULL;
55	int retval;
56
57	if (sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL) != SQLITE_OK)
58		errx(EXIT_FAILURE, "Unable to query database");
59	if (sqlite3_bind_text(stmt, 1, cmd, -1, NULL) != SQLITE_OK)
60		errx(EXIT_FAILURE, "Unable to query database");
61	retval = 1;
62	while (sqlite3_step(stmt) == SQLITE_ROW) {
63		printf("%s(%s) - %s\n", sqlite3_column_text(stmt, 0),
64		    sqlite3_column_text(stmt, 1),
65		    sqlite3_column_text(stmt, 2));
66		retval = 0;
67	}
68	sqlite3_finalize(stmt);
69	if (retval)
70		fprintf(stderr, "%s: not found\n", cmd);
71	return retval;
72}
73
74int
75main(int argc, char *argv[])
76{
77	sqlite3 *db;
78	int ch, retval;
79
80	while ((ch = getopt(argc, argv, "")) != -1) {
81		switch (ch) {
82		default:
83			usage();
84		}
85	}
86	argc -= optind;
87	argv += optind;
88
89	if (argc == 0)
90		usage();
91
92	if ((db = init_db(MANDB_READONLY)) == NULL)
93		exit(EXIT_FAILURE);
94
95	retval = 0;
96	while (argc--)
97		retval |= whatis(db, *argv++);
98
99	close_db(db);
100	return retval;
101}
102