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 #ifndef lint 37 #if 0 38 static char sccsid[] = "from: @(#)option.c 8.2 (Berkeley) 4/16/94"; 39 #else 40 __RCSID("$NetBSD: option.c,v 1.26 2007/02/06 15:33:22 perry Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 47 #include <err.h> 48 #include <fts.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "find.h" 54 55 int typecompare(const void *, const void *); 56 static OPTION *option(char *); 57 58 /* NB: the following table must be sorted lexically. */ 59 static OPTION const options[] = { 60 { "!", N_NOT, c_not, 0 }, 61 { "(", N_OPENPAREN, c_openparen, 0 }, 62 { ")", N_CLOSEPAREN, c_closeparen, 0 }, 63 { "-a", N_AND, c_null, 0 }, 64 { "-amin", N_AMIN, c_amin, 1 }, 65 { "-and", N_AND, c_null, 0 }, 66 { "-anewer", N_ANEWER, c_anewer, 1 }, 67 { "-atime", N_ATIME, c_atime, 1 }, 68 { "-cmin", N_CMIN, c_cmin, 1 }, 69 { "-cnewer", N_CNEWER, c_cnewer, 1 }, 70 { "-ctime", N_CTIME, c_ctime, 1 }, 71 { "-delete", N_DELETE, c_delete, 0 }, 72 { "-depth", N_DEPTH, c_depth, 0 }, 73 { "-empty", N_EMPTY, c_empty, 0 }, 74 { "-exec", N_EXEC, c_exec, 1 }, 75 { "-execdir", N_EXECDIR, c_execdir, 1 }, 76 { "-exit", N_EXIT, c_exit, 0 }, 77 { "-false", N_FALSE, c_false, 0 }, 78 { "-flags", N_FLAGS, c_flags, 1 }, 79 { "-follow", N_FOLLOW, c_follow, 0 }, 80 { "-fprint", N_FPRINT, c_fprint, 1 }, 81 { "-fstype", N_FSTYPE, c_fstype, 1 }, 82 { "-group", N_GROUP, c_group, 1 }, 83 { "-iname", N_INAME, c_iname, 1 }, 84 { "-inum", N_INUM, c_inum, 1 }, 85 { "-iregex", N_IREGEX, c_iregex, 1 }, 86 { "-links", N_LINKS, c_links, 1 }, 87 { "-ls", N_LS, c_ls, 0 }, 88 { "-maxdepth", N_MAXDEPTH, c_maxdepth, 1 }, 89 { "-mindepth", N_MINDEPTH, c_mindepth, 1 }, 90 { "-mmin", N_MMIN, c_mmin, 1 }, 91 { "-mtime", N_MTIME, c_mtime, 1 }, 92 { "-name", N_NAME, c_name, 1 }, 93 { "-newer", N_NEWER, c_newer, 1 }, 94 { "-nogroup", N_NOGROUP, c_nogroup, 0 }, 95 { "-nouser", N_NOUSER, c_nouser, 0 }, 96 { "-o", N_OR, c_or, 0 }, 97 { "-ok", N_OK, c_exec, 1 }, 98 { "-or", N_OR, c_or, 0 }, 99 { "-path", N_PATH, c_path, 1 }, 100 { "-perm", N_PERM, c_perm, 1 }, 101 { "-print", N_PRINT, c_print, 0 }, 102 { "-print0", N_PRINT0, c_print0, 0 }, 103 { "-printx", N_PRINTX, c_printx, 0 }, 104 { "-prune", N_PRUNE, c_prune, 0 }, 105 { "-regex", N_REGEX, c_regex, 1 }, 106 { "-rm", N_DELETE, c_delete, 0 }, 107 { "-size", N_SIZE, c_size, 1 }, 108 { "-type", N_TYPE, c_type, 1 }, 109 { "-user", N_USER, c_user, 1 }, 110 { "-xdev", N_XDEV, c_xdev, 0 } 111 }; 112 113 /* 114 * find_create -- 115 * create a node corresponding to a command line argument. 116 * 117 * TODO: 118 * add create/process function pointers to node, so we can skip 119 * this switch stuff. 120 */ 121 PLAN * 122 find_create(char ***argvp) 123 { 124 OPTION *p; 125 PLAN *new; 126 char **argv; 127 128 argv = *argvp; 129 130 if ((p = option(*argv)) == NULL) 131 errx(1, "%s: unknown option", *argv); 132 ++argv; 133 if (p->arg && !*argv) 134 errx(1, "%s: requires additional arguments", *--argv); 135 136 new = (p->create)(&argv, p->token == N_OK); 137 138 *argvp = argv; 139 return (new); 140 } 141 142 static OPTION * 143 option(char *name) 144 { 145 OPTION tmp; 146 147 tmp.name = name; 148 return ((OPTION *)bsearch(&tmp, options, 149 sizeof(options)/sizeof(OPTION), sizeof(OPTION), typecompare)); 150 } 151 152 int 153 typecompare(const void *a, const void *b) 154 { 155 156 return (strcmp(((const OPTION *)a)->name, ((const OPTION *)b)->name)); 157 } 158