contrib/mdocml/apropos.c

   1 /*      $Id: apropos.c,v 1.39 2014/04/20 16:46:04 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
   4  * Copyright (c) 2013 Ingo Schwarze <schwarze@openbsd.org>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #ifdef HAVE_CONFIG_H
  19 #include "config.h"
  20 #endif
  21 #include <sys/param.h>
  22
  23 #include <assert.h>
  24 #include <getopt.h>
  25 #include <stdint.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <unistd.h>
  30
  31 #include "manpath.h"
  32 #include "mansearch.h"
  33
  34
  35 int
  36 main(int argc, char *argv[])
  37 {
  38         int              ch, whatis;
  39         struct mansearch search;
  40         size_t           i, sz;
  41         struct manpage  *res;
  42         struct manpaths  paths;
  43         char            *defpaths, *auxpaths;
  44         char            *conf_file;
  45         char            *progname;
  46         const char      *outkey;
  47         extern char     *optarg;
  48         extern int       optind;
  49
  50         progname = strrchr(argv[0], '/');
  51         if (progname == NULL)
  52                 progname = argv[0];
  53         else
  54                 ++progname;
  55
  56         whatis = (0 == strncmp(progname, "whatis", 6));
  57
  58         memset(&paths, 0, sizeof(struct manpaths));
  59         memset(&search, 0, sizeof(struct mansearch));
  60
  61         auxpaths = defpaths = NULL;
  62         conf_file = NULL;
  63         outkey = "Nd";
  64
  65         while (-1 != (ch = getopt(argc, argv, "C:M:m:O:S:s:")))
  66                 switch (ch) {
  67                 case 'C':
  68                         conf_file = optarg;
  69                         break;
  70                 case 'M':
  71                         defpaths = optarg;
  72                         break;
  73                 case 'm':
  74                         auxpaths = optarg;
  75                         break;
  76                 case 'O':
  77                         outkey = optarg;
  78                         break;
  79                 case 'S':
  80                         search.arch = optarg;
  81                         break;
  82                 case 's':
  83                         search.sec = optarg;
  84                         break;
  85                 default:
  86                         goto usage;
  87                 }
  88
  89         argc -= optind;
  90         argv += optind;
  91
  92         if (0 == argc)
  93                 goto usage;
  94
  95         search.deftype = whatis ? TYPE_Nm : TYPE_Nm | TYPE_Nd;
  96         search.flags = whatis ? MANSEARCH_WHATIS : 0;
  97
  98         manpath_parse(&paths, conf_file, defpaths, auxpaths);
  99         mansearch_setup(1);
 100         ch = mansearch(&search, &paths, argc, argv, outkey, &res, &sz);
 101         manpath_free(&paths);
 102
 103         if (0 == ch)
 104                 goto usage;
 105
 106         for (i = 0; i < sz; i++) {
 107                 printf("%s - %s\n", res[i].names,
 108                     NULL == res[i].output ? "" : res[i].output);
 109                 free(res[i].file);
 110                 free(res[i].names);
 111                 free(res[i].output);
 112         }
 113
 114         free(res);
 115         mansearch_setup(0);
 116         return(sz ? EXIT_SUCCESS : EXIT_FAILURE);
 117 usage:
 118         fprintf(stderr, "usage: %s [-C file] [-M path] [-m path] "
 119                         "[-O outkey] "
 120                         "[-S arch] [-s section]%s ...\n", progname,
 121                         whatis ? " name" : "\n               expression");
 122         return(EXIT_FAILURE);
 123 }