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Up to [cvsweb.bsd.lv] / mandoc

Change the mansearch() interface to use the mlinks table in the database
and return a list of names with sections, used by apropos(1) for display.
While here, improve uniformity of the interface by allocating the file
name dynamically, just like the names list and the description.

/*	$Id: apropos.c,v 1.35 2013/12/27 18:51:25 schwarze Exp $ */
/*
 * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 *
 * 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.
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/param.h>

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

#include "manpath.h"
#include "mansearch.h"

int
main(int argc, char *argv[])
{
	int		 ch, whatis;
	struct mansearch search;
	size_t		 i, sz;
	struct manpage	*res;
	struct manpaths	 paths;
	char		*defpaths, *auxpaths;
	char		*conf_file;
	char		*progname;
	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(&search, 0, sizeof(struct mansearch));

	auxpaths = defpaths = NULL;
	conf_file = 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'):
			search.arch = optarg;
			break;
		case ('s'):
			search.sec = optarg;
			break;
		default:
			goto usage;
		}

	argc -= optind;
	argv += optind;

	if (0 == argc)
		goto usage;

	search.deftype = whatis ? TYPE_Nm : TYPE_Nm | TYPE_Nd;
	search.flags = whatis ? MANSEARCH_WHATIS : 0;

	manpath_parse(&paths, conf_file, defpaths, auxpaths);
	ch = mansearch(&search, &paths, argc, argv, &res, &sz);
	manpath_free(&paths);

	if (0 == ch)
		goto usage;

	for (i = 0; i < sz; i++) {
		printf("%s - %s\n", res[i].names, res[i].desc);
		free(res[i].file);
		free(res[i].names);
		free(res[i].desc);
	}

	free(res);
	return(sz ? 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);
}