114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/* $NetBSD: whatis.c,v 1.7 2017/05/23 15:27:54 abhinav Exp $ */
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/*-
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* Copyright (c) 2012 Joerg Sonnenberger <joerg@NetBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: whatis.c,v 1.7 2017/05/23 15:27:54 abhinav Exp $");
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "apropos-utils.h"
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__dead static void
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usage(void)
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{
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fprintf(stderr, "%s [-C path] ...\n", "whatis");
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exit(EXIT_FAILURE);
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}
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static int
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whatis(sqlite3 *db, const char *cmd)
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{
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static const char sqlstr[] = "SELECT name, section, name_desc"
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" FROM mandb WHERE name MATCH ? AND name=? COLLATE NOCASE"
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" UNION"
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" SELECT b.link AS name, b.section, a.name_desc FROM mandb a"
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" JOIN"
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" mandb_links b ON a.name=b.target AND a.section=b.section WHERE b.link=?"
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" GROUP BY a.name, a.section, a.name_desc ORDER BY section, name";
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sqlite3_stmt *stmt = NULL;
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int retval;
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if (sqlite3_prepare_v2(db, sqlstr, -1, &stmt, NULL) != SQLITE_OK)
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errx(EXIT_FAILURE, "Unable to query database");
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if (sqlite3_bind_text(stmt, 1, cmd, -1, NULL) != SQLITE_OK)
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errx(EXIT_FAILURE, "Unable to query database");
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if (sqlite3_bind_text(stmt, 2, cmd, -1, NULL) != SQLITE_OK)
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errx(EXIT_FAILURE, "Unable to query database");
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if (sqlite3_bind_text(stmt, 3, cmd, -1, NULL) != SQLITE_OK)
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errx(EXIT_FAILURE, "Unable to query database");
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retval = 1;
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while (sqlite3_step(stmt) == SQLITE_ROW) {
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printf("%s(%s) - %s\n", sqlite3_column_text(stmt, 0),
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sqlite3_column_text(stmt, 1),
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sqlite3_column_text(stmt, 2));
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retval = 0;
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}
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sqlite3_finalize(stmt);
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if (retval)
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fprintf(stderr, "%s: not found\n", cmd);
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return retval;
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}
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int
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main(int argc, char *argv[])
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{
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sqlite3 *db;
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int ch, retval;
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const char *manconf = MANCONF;
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while ((ch = getopt(argc, argv, "C:")) != -1) {
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switch (ch) {
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case 'C':
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manconf = optarg;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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usage();
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if ((db = init_db(MANDB_READONLY, manconf)) == NULL)
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exit(EXIT_FAILURE);
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retval = 0;
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while (argc--)
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retval |= whatis(db, *argv++);
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close_db(db);
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return retval;
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}
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