Return to apropos.c CVS log

Up to [local] / src / usr.bin / mandoc

Annotation of src/usr.bin/mandoc/apropos.c, Revision 1.5

1.5     ! schwarze    1: /*     $Id: apropos.c,v 1.4 2011/11/13 11:07:10 schwarze Exp $ */
1.1       schwarze    2: /*
1.3       schwarze    3:  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.1       schwarze    4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: #include <assert.h>
                     18: #include <getopt.h>
                     19: #include <limits.h>
                     20: #include <stdio.h>
                     21: #include <stdlib.h>
                     22: #include <string.h>
                     23:
1.3       schwarze   24: #include "apropos_db.h"
1.1       schwarze   25: #include "mandoc.h"
                     26:
1.3       schwarze   27: static int      cmp(const void *, const void *);
                     28: static void     list(struct rec *, size_t, void *);
1.1       schwarze   29: static void     usage(void);
                     30:
1.2       schwarze   31: static char    *progname;
1.1       schwarze   32:
                     33: int
                     34: apropos(int argc, char *argv[])
                     35: {
1.4       schwarze   36:        int              ch;
1.5     ! schwarze   37:        size_t           terms;
1.1       schwarze   38:        struct opts      opts;
1.3       schwarze   39:        struct expr     *e;
1.1       schwarze   40:        extern int       optind;
                     41:        extern char     *optarg;
                     42:
                     43:        memset(&opts, 0, sizeof(struct opts));
                     44:
                     45:        progname = strrchr(argv[0], '/');
                     46:        if (progname == NULL)
                     47:                progname = argv[0];
                     48:        else
                     49:                ++progname;
                     50:
1.4       schwarze   51:        while (-1 != (ch = getopt(argc, argv, "S:s:")))
1.1       schwarze   52:                switch (ch) {
1.3       schwarze   53:                case ('S'):
1.1       schwarze   54:                        opts.arch = optarg;
                     55:                        break;
1.3       schwarze   56:                case ('s'):
1.1       schwarze   57:                        opts.cat = optarg;
                     58:                        break;
                     59:                default:
                     60:                        usage();
                     61:                        return(EXIT_FAILURE);
                     62:                }
                     63:
                     64:        argc -= optind;
                     65:        argv += optind;
                     66:
1.3       schwarze   67:        if (0 == argc)
                     68:                return(EXIT_SUCCESS);
1.1       schwarze   69:
1.5     ! schwarze   70:        if (NULL == (e = exprcomp(argc, argv, &terms))) {
1.3       schwarze   71:                fprintf(stderr, "Bad expression\n");
                     72:                return(EXIT_FAILURE);
                     73:        }
1.1       schwarze   74:
1.2       schwarze   75:        /*
                     76:         * Configure databases.
                     77:         * The keyword database is a btree that allows for duplicate
                     78:         * entries.
                     79:         * The index database is a recno.
                     80:         */
                     81:
1.5     ! schwarze   82:        apropos_search(&opts, e, terms, NULL, list);
1.3       schwarze   83:        exprfree(e);
                     84:        return(EXIT_SUCCESS);
1.1       schwarze   85: }
                     86:
1.3       schwarze   87: /* ARGSUSED */
1.1       schwarze   88: static void
1.3       schwarze   89: list(struct rec *res, size_t sz, void *arg)
1.1       schwarze   90: {
1.3       schwarze   91:        int              i;
1.1       schwarze   92:
1.3       schwarze   93:        qsort(res, sz, sizeof(struct rec), cmp);
1.1       schwarze   94:
1.3       schwarze   95:        for (i = 0; i < (int)sz; i++)
1.1       schwarze   96:                printf("%s(%s%s%s) - %s\n", res[i].title,
                     97:                                res[i].cat,
                     98:                                *res[i].arch ? "/" : "",
                     99:                                *res[i].arch ? res[i].arch : "",
                    100:                                res[i].desc);
                    101: }
                    102:
                    103: static int
1.3       schwarze  104: cmp(const void *p1, const void *p2)
1.1       schwarze  105: {
                    106:
1.3       schwarze  107:        return(strcmp(((const struct rec *)p1)->title,
                    108:                                ((const struct rec *)p2)->title));
1.1       schwarze  109: }
                    110:
1.3       schwarze  111: static void
                    112: usage(void)
1.1       schwarze  113: {
                    114:
1.3       schwarze  115:        fprintf(stderr, "usage: %s "
                    116:                        "[-I] "
                    117:                        "[-S arch] "
                    118:                        "[-s section] "
                    119:                        "EXPR\n",
                    120:                        progname);
1.1       schwarze  121: }