aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/apropos.c
blob: 26adeb4976530da665548f245264bdb9c573b16b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/*	$Id: apropos.c,v 1.27.2.2 2014/08/11 00:31:13 schwarze Exp $ */
/*
 * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include "config.h"

#include <sys/param.h>
#include <sys/types.h>

#include <assert.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "apropos_db.h"
#include "mandoc.h"
#include "manpath.h"

static	int	 cmp(const void *, const void *);
static	void	 list(struct res *, size_t, void *);

static	char	*progname;

int
main(int argc, char *argv[])
{
	int		 ch, rc, whatis;
	struct res	*res;
	struct manpaths	 paths;
	size_t		 terms, ressz;
	struct opts	 opts;
	struct expr	*e;
	char		*defpaths, *auxpaths;
	char		*conf_file;
	extern char	*optarg;
	extern int	 optind;

	progname = strrchr(argv[0], '/');
	if (progname == NULL)
		progname = argv[0];
	else
		++progname;

	whatis = (0 == strncmp(progname, "whatis", 6));

	memset(&paths, 0, sizeof(struct manpaths));
	memset(&opts, 0, sizeof(struct opts));

	ressz = 0;
	res = NULL;
	auxpaths = defpaths = NULL;
	conf_file = NULL;
	e = NULL;

	while (-1 != (ch = getopt(argc, argv, "C:M:m:S:s:")))
		switch (ch) {
		case ('C'):
			conf_file = optarg;
			break;
		case ('M'):
			defpaths = optarg;
			break;
		case ('m'):
			auxpaths = optarg;
			break;
		case ('S'):
			opts.arch = optarg;
			break;
		case ('s'):
			opts.cat = optarg;
			break;
		default:
			goto usage;
		}

	argc -= optind;
	argv += optind;

	if (0 == argc)
		goto usage;

	rc = 0;

	manpath_parse(&paths, conf_file, defpaths, auxpaths);

	e = whatis ? termcomp(argc, argv, &terms) :
		     exprcomp(argc, argv, &terms);
		
	if (NULL == e) {
		fprintf(stderr, "%s: Bad expression\n", progname);
		goto out;
	}

	rc = apropos_search
		(paths.sz, paths.paths, &opts, 
		 e, terms, NULL, &ressz, &res, list);

	if (0 == rc) {
		fprintf(stderr, "%s: Bad database\n", progname);
		goto out;
	}

out:
	manpath_free(&paths);
	resfree(res, ressz);
	exprfree(e);
	return(rc ? EXIT_SUCCESS : EXIT_FAILURE);

usage:
	fprintf(stderr, "usage: %s [-C file] [-M path] [-m path] "
			"[-S arch] [-s section]%s ...\n", progname,
			whatis ? " name" : "\n               expression");
	return(EXIT_FAILURE);
}

/* ARGSUSED */
static void
list(struct res *res, size_t sz, void *arg)
{
	size_t		 i;

	qsort(res, sz, sizeof(struct res), cmp);

	for (i = 0; i < sz; i++) {
		if ( ! res[i].matched)
			continue;
		printf("%s(%s%s%s) - %.70s\n",
				res[i].title,
				res[i].cat,
				*res[i].arch ? "/" : "",
				*res[i].arch ? res[i].arch : "",
				res[i].desc);
	}
}

static int
cmp(const void *p1, const void *p2)
{

	return(strcasecmp(((const struct res *)p1)->title,
				((const struct res *)p2)->title));
}