1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * 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 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)option.c 5.4 (Berkeley) 11/15/90"; 13 #endif /* not lint */ 14 15 #include <sys/types.h> 16 #include <sys/stat.h> 17 #include <fts.h> 18 #include <stdio.h> 19 #include "find.h" 20 21 typedef struct _option { 22 char *name; /* option name */ 23 int token; /* token value */ 24 PLAN *(*create)(); /* create function */ 25 #define O_NONE 0x01 /* no call required */ 26 #define O_ZERO 0x02 /* pass: nothing */ 27 #define O_ARGV 0x04 /* pass: argv, increment argv */ 28 #define O_ARGVP 0x08 /* pass: *argv, T_OK || T_EXEC */ 29 #define O_MASK 0x0f /* mask of op bits */ 30 #define O_OLD 0x10 /* deprecated syntax */ 31 #define O_NEW 0x20 /* new syntax */ 32 int flags; 33 } OPTION; 34 35 PLAN *c_atime(), *c_ctime(), *c_depth(), *c_exec(), *c_follow(), 36 *c_fstype(), *c_group(), *c_inum(), *c_links(), *c_ls(), 37 *c_mtime(), *c_name(), *c_newer(), *c_nogroup(), *c_nouser(), 38 *c_perm(), *c_print(), *c_prune(), *c_size(), *c_type(), 39 *c_user(), *c_xdev(), *c_openparen(), *c_closeparen(), *c_not(), 40 *c_or(); 41 42 OPTION options[] = { 43 "!", T_NOT, c_not, O_ZERO, 44 "(", T_OPENPAREN, c_openparen, O_ZERO, 45 ")", T_CLOSEPAREN, c_closeparen, O_ZERO, 46 "a", T_AND, NULL, O_NONE|O_OLD, 47 "and", T_AND, NULL, O_NONE|O_NEW, 48 "atime", T_ATIME, c_atime, O_ARGV, 49 "ctime", T_CTIME, c_ctime, O_ARGV, 50 "depth", T_DEPTH, c_depth, O_ZERO|O_OLD, 51 "exec", T_EXEC, c_exec, O_ARGVP, 52 "follow", T_FOLLOW, c_follow, O_ZERO|O_OLD, 53 "fstype", T_FSTYPE, c_fstype, O_ARGV, 54 "group", T_GROUP, c_group, O_ARGV, 55 "inum", T_INUM, c_inum, O_ARGV, 56 "links", T_LINKS, c_links, O_ARGV, 57 "ls", T_LS, c_ls, O_ZERO, 58 "mtime", T_MTIME, c_mtime, O_ARGV, 59 "name", T_NAME, c_name, O_ARGV, 60 "newer", T_NEWER, c_newer, O_ARGV, 61 "nogroup", T_NOGROUP, c_nogroup, O_ZERO, 62 "nouser", T_NOUSER, c_nouser, O_ZERO, 63 "o", T_OR, c_or, O_ZERO|O_OLD, 64 "ok", T_OK, c_exec, O_ARGVP, 65 "or", T_OR, c_or, O_ZERO|O_NEW, 66 "perm", T_PERM, c_perm, O_ARGV, 67 "print", T_PRINT, c_print, O_ZERO, 68 "prune", T_PRUNE, c_prune, O_ZERO, 69 "size", T_SIZE, c_size, O_ARGV, 70 "type", T_TYPE, c_type, O_ARGV, 71 "user", T_USER, c_user, O_ARGV, 72 "xdev", T_XDEV, c_xdev, O_ZERO|O_OLD, 73 { NULL }, 74 }; 75 76 /* 77 * find_create -- 78 * create a node corresponding to a command line argument. 79 * 80 * TODO: 81 * add create/process function pointers to node, so we can skip 82 * this switch stuff. 83 */ 84 PLAN * 85 find_create(argvp) 86 char ***argvp; 87 { 88 register OPTION *p; 89 OPTION tmp; 90 PLAN *new; 91 char **argv; 92 int typecompare(); 93 94 argv = *argvp; 95 tmp.name = *argv++; 96 97 /* strip off any leading dash */ 98 if (*tmp.name == '-') 99 ++tmp.name; 100 101 p = (OPTION *)bsearch(&tmp, options, sizeof(options)/sizeof(OPTION), 102 sizeof(OPTION), typecompare); 103 if (!p || isdeprecated && p->flags&O_NEW || 104 !isdeprecated && p->flags&O_OLD) { 105 (void)fprintf(stderr, "find: unknown option %s.\n", *--argv); 106 exit(1); 107 } 108 if (p->flags & (O_ARGV|O_ARGVP) && !*argv) { 109 (void)fprintf(stderr, 110 "find: %s requires additional arguments.\n", *--argv); 111 exit(1); 112 } 113 114 switch(p->flags&O_MASK) { 115 case O_NONE: 116 new = NULL; 117 break; 118 case O_ZERO: 119 new = (p->create)(); 120 break; 121 case O_ARGV: 122 new = (p->create)(*argv++); 123 break; 124 case O_ARGVP: 125 new = (p->create)(&argv, p->token == T_OK); 126 break; 127 } 128 *argvp = argv; 129 return(new); 130 } 131 132 typecompare(a, b) 133 OPTION *a, *b; 134 { 135 return(strcmp(a->name, b->name)); 136 } 137