1 /*- 2 * Copyright (c) 1990, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Cimarron D. Taylor of the University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static char sccsid[] = "@(#)option.c 8.2 (Berkeley) 4/16/94"; 39 #endif /* not lint */ 40 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 44 #include <err.h> 45 #include <fts.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 50 #include "find.h" 51 52 static OPTION *option __P((char *)); 53 54 /* NB: the following table must be sorted lexically. */ 55 static OPTION const options[] = { 56 { "!", N_NOT, c_not, O_ZERO }, 57 { "(", N_OPENPAREN, c_openparen, O_ZERO }, 58 { ")", N_CLOSEPAREN, c_closeparen, O_ZERO }, 59 { "-a", N_AND, NULL, O_NONE }, 60 { "-and", N_AND, NULL, O_NONE }, 61 { "-atime", N_ATIME, c_atime, O_ARGV }, 62 { "-ctime", N_CTIME, c_ctime, O_ARGV }, 63 { "-depth", N_DEPTH, c_depth, O_ZERO }, 64 { "-exec", N_EXEC, c_exec, O_ARGVP }, 65 { "-follow", N_FOLLOW, c_follow, O_ZERO }, 66 { "-fstype", N_FSTYPE, c_fstype, O_ARGV }, 67 { "-group", N_GROUP, c_group, O_ARGV }, 68 { "-inum", N_INUM, c_inum, O_ARGV }, 69 { "-links", N_LINKS, c_links, O_ARGV }, 70 { "-ls", N_LS, c_ls, O_ZERO }, 71 { "-mtime", N_MTIME, c_mtime, O_ARGV }, 72 { "-name", N_NAME, c_name, O_ARGV }, 73 { "-newer", N_NEWER, c_newer, O_ARGV }, 74 { "-nogroup", N_NOGROUP, c_nogroup, O_ZERO }, 75 { "-nouser", N_NOUSER, c_nouser, O_ZERO }, 76 { "-o", N_OR, c_or, O_ZERO }, 77 { "-ok", N_OK, c_exec, O_ARGVP }, 78 { "-or", N_OR, c_or, O_ZERO }, 79 { "-path", N_PATH, c_path, O_ARGV }, 80 { "-perm", N_PERM, c_perm, O_ARGV }, 81 { "-print", N_PRINT, c_print, O_ZERO }, 82 { "-prune", N_PRUNE, c_prune, O_ZERO }, 83 { "-size", N_SIZE, c_size, O_ARGV }, 84 { "-type", N_TYPE, c_type, O_ARGV }, 85 { "-user", N_USER, c_user, O_ARGV }, 86 { "-xdev", N_XDEV, c_xdev, O_ZERO }, 87 }; 88 89 /* 90 * find_create -- 91 * create a node corresponding to a command line argument. 92 * 93 * TODO: 94 * add create/process function pointers to node, so we can skip 95 * this switch stuff. 96 */ 97 PLAN * 98 find_create(argvp) 99 char ***argvp; 100 { 101 register OPTION *p; 102 PLAN *new; 103 char **argv; 104 105 argv = *argvp; 106 107 if ((p = option(*argv)) == NULL) 108 errx(1, "%s: unknown option", *argv); 109 ++argv; 110 if (p->flags & (O_ARGV|O_ARGVP) && !*argv) 111 errx(1, "%s: requires additional arguments", *--argv); 112 113 switch(p->flags) { 114 case O_NONE: 115 new = NULL; 116 break; 117 case O_ZERO: 118 new = (p->create)(); 119 break; 120 case O_ARGV: 121 new = (p->create)(*argv++); 122 break; 123 case O_ARGVP: 124 new = (p->create)(&argv, p->token == N_OK); 125 break; 126 default: 127 abort(); 128 } 129 *argvp = argv; 130 return (new); 131 } 132 133 static OPTION * 134 option(name) 135 char *name; 136 { 137 OPTION tmp; 138 int typecompare __P((const void *, const void *)); 139 140 tmp.name = name; 141 return ((OPTION *)bsearch(&tmp, options, 142 sizeof(options)/sizeof(OPTION), sizeof(OPTION), typecompare)); 143 } 144 145 int 146 typecompare(a, b) 147 const void *a, *b; 148 { 149 return (strcmp(((OPTION *)a)->name, ((OPTION *)b)->name)); 150 } 151