commands/find/option.c

   1 /*      $NetBSD: option.c,v 1.26 2007/02/06 15:33:22 perry Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1990, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Cimarron D. Taylor of the University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39
  40 #include <err.h>
  41 #include <fts.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 #include "find.h"
  47
  48 int typecompare(const void *, const void *);
  49 static OPTION *option(char *);
  50
  51 /* NB: the following table must be sorted lexically. */
  52 static OPTION const options[] = {
  53         { "!",          N_NOT,          c_not,          0 },
  54         { "(",          N_OPENPAREN,    c_openparen,    0 },
  55         { ")",          N_CLOSEPAREN,   c_closeparen,   0 },
  56         { "-a",         N_AND,          c_null,         0 },
  57         { "-amin",      N_AMIN,         c_amin,         1 },
  58         { "-and",       N_AND,          c_null,         0 },
  59         { "-anewer",    N_ANEWER,       c_anewer,       1 },
  60         { "-atime",     N_ATIME,        c_atime,        1 },
  61         { "-cmin",      N_CMIN,         c_cmin,         1 },
  62         { "-cnewer",    N_CNEWER,       c_cnewer,       1 },
  63         { "-ctime",     N_CTIME,        c_ctime,        1 },
  64         { "-delete",    N_DELETE,       c_delete,       0 },
  65         { "-depth",     N_DEPTH,        c_depth,        0 },
  66         { "-empty",     N_EMPTY,        c_empty,        0 },
  67         { "-exec",      N_EXEC,         c_exec,         1 },
  68         { "-execdir",   N_EXECDIR,      c_execdir,      1 },
  69         { "-exit",      N_EXIT,         c_exit,         0 },
  70         { "-false",     N_FALSE,        c_false,        0 },
  71         { "-follow",    N_FOLLOW,       c_follow,       0 },
  72         { "-fprint",    N_FPRINT,       c_fprint,       1 },
  73 #ifndef _MINIX
  74         { "-flags",     N_FLAGS,        c_flags,        1 },
  75         { "-fstype",    N_FSTYPE,       c_fstype,       1 },
  76 #endif
  77         { "-group",     N_GROUP,        c_group,        1 },
  78         { "-iname",     N_INAME,        c_iname,        1 },
  79         { "-inum",      N_INUM,         c_inum,         1 },
  80         { "-iregex",    N_IREGEX,       c_iregex,       1 },
  81         { "-links",     N_LINKS,        c_links,        1 },
  82         { "-ls",        N_LS,           c_ls,           0 },
  83         { "-maxdepth",  N_MAXDEPTH,     c_maxdepth,     1 },
  84         { "-mindepth",  N_MINDEPTH,     c_mindepth,     1 },
  85         { "-mmin",      N_MMIN,         c_mmin,         1 },
  86         { "-mtime",     N_MTIME,        c_mtime,        1 },
  87         { "-name",      N_NAME,         c_name,         1 },
  88         { "-newer",     N_NEWER,        c_newer,        1 },
  89         { "-nogroup",   N_NOGROUP,      c_nogroup,      0 },
  90         { "-nouser",    N_NOUSER,       c_nouser,       0 },
  91         { "-o",         N_OR,           c_or,           0 },
  92         { "-ok",        N_OK,           c_exec,         1 },
  93         { "-or",        N_OR,           c_or,           0 },
  94         { "-path",      N_PATH,         c_path,         1 },
  95         { "-perm",      N_PERM,         c_perm,         1 },
  96         { "-print",     N_PRINT,        c_print,        0 },
  97         { "-print0",    N_PRINT0,       c_print0,       0 },
  98         { "-printx",    N_PRINTX,       c_printx,       0 },
  99         { "-prune",     N_PRUNE,        c_prune,        0 },
 100         { "-regex",     N_REGEX,        c_regex,        1 },
 101         { "-rm",        N_DELETE,       c_delete,       0 },
 102         { "-size",      N_SIZE,         c_size,         1 },
 103         { "-type",      N_TYPE,         c_type,         1 },
 104         { "-user",      N_USER,         c_user,         1 },
 105         { "-xdev",      N_XDEV,         c_xdev,         0 }
 106 };
 107
 108 /*
 109  * find_create --
 110  *      create a node corresponding to a command line argument.
 111  *
 112  * TODO:
 113  *      add create/process function pointers to node, so we can skip
 114  *      this switch stuff.
 115  */
 116 PLAN *
 117 find_create(char ***argvp)
 118 {
 119         OPTION *p;
 120         PLAN *new;
 121         char **argv;
 122
 123         argv = *argvp;
 124
 125         if ((p = option(*argv)) == NULL)
 126                 errx(1, "%s: unknown option", *argv);
 127         ++argv;
 128         if (p->arg && !*argv)
 129                 errx(1, "%s: requires additional arguments", *--argv);
 130
 131         new = (p->create)(&argv, p->token == N_OK);
 132
 133         *argvp = argv;
 134         return (new);
 135 }
 136
 137 static OPTION *
 138 option(char *name)
 139 {
 140         OPTION tmp;
 141
 142         tmp.name = name;
 143         return ((OPTION *)bsearch(&tmp, options,
 144             sizeof(options)/sizeof(OPTION), sizeof(OPTION), typecompare));
 145 }
 146
 147 int
 148 typecompare(const void *a, const void *b)
 149 {
 150
 151         return (strcmp(((const OPTION *)a)->name, ((const OPTION *)b)->name));
 152 }