diff options
Diffstat (limited to 'usr.bin/find/option.c')
| -rw-r--r-- | usr.bin/find/option.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/usr.bin/find/option.c b/usr.bin/find/option.c new file mode 100644 index 0000000..9b25cee --- /dev/null +++ b/usr.bin/find/option.c @@ -0,0 +1,150 @@ +/*- + * Copyright (c) 1990, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Cimarron D. Taylor of the University of California, Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)option.c 8.2 (Berkeley) 4/16/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/stat.h> + +#include <err.h> +#include <fts.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "find.h" + +static OPTION *option __P((char *)); + +/* NB: the following table must be sorted lexically. */ +static OPTION const options[] = { + { "!", N_NOT, c_not, O_ZERO }, + { "(", N_OPENPAREN, c_openparen, O_ZERO }, + { ")", N_CLOSEPAREN, c_closeparen, O_ZERO }, + { "-a", N_AND, NULL, O_NONE }, + { "-and", N_AND, NULL, O_NONE }, + { "-atime", N_ATIME, c_atime, O_ARGV }, + { "-ctime", N_CTIME, c_ctime, O_ARGV }, + { "-depth", N_DEPTH, c_depth, O_ZERO }, + { "-exec", N_EXEC, c_exec, O_ARGVP }, + { "-follow", N_FOLLOW, c_follow, O_ZERO }, + { "-fstype", N_FSTYPE, c_fstype, O_ARGV }, + { "-group", N_GROUP, c_group, O_ARGV }, + { "-inum", N_INUM, c_inum, O_ARGV }, + { "-links", N_LINKS, c_links, O_ARGV }, + { "-ls", N_LS, c_ls, O_ZERO }, + { "-mtime", N_MTIME, c_mtime, O_ARGV }, + { "-name", N_NAME, c_name, O_ARGV }, + { "-newer", N_NEWER, c_newer, O_ARGV }, + { "-nogroup", N_NOGROUP, c_nogroup, O_ZERO }, + { "-nouser", N_NOUSER, c_nouser, O_ZERO }, + { "-o", N_OR, c_or, O_ZERO }, + { "-ok", N_OK, c_exec, O_ARGVP }, + { "-or", N_OR, c_or, O_ZERO }, + { "-path", N_PATH, c_path, O_ARGV }, + { "-perm", N_PERM, c_perm, O_ARGV }, + { "-print", N_PRINT, c_print, O_ZERO }, + { "-prune", N_PRUNE, c_prune, O_ZERO }, + { "-size", N_SIZE, c_size, O_ARGV }, + { "-type", N_TYPE, c_type, O_ARGV }, + { "-user", N_USER, c_user, O_ARGV }, + { "-xdev", N_XDEV, c_xdev, O_ZERO }, +}; + +/* + * find_create -- + * create a node corresponding to a command line argument. + * + * TODO: + * add create/process function pointers to node, so we can skip + * this switch stuff. + */ +PLAN * +find_create(argvp) + char ***argvp; +{ + register OPTION *p; + PLAN *new; + char **argv; + + argv = *argvp; + + if ((p = option(*argv)) == NULL) + errx(1, "%s: unknown option", *argv); + ++argv; + if (p->flags & (O_ARGV|O_ARGVP) && !*argv) + errx(1, "%s: requires additional arguments", *--argv); + + switch(p->flags) { + case O_NONE: + new = NULL; + break; + case O_ZERO: + new = (p->create)(); + break; + case O_ARGV: + new = (p->create)(*argv++); + break; + case O_ARGVP: + new = (p->create)(&argv, p->token == N_OK); + break; + default: + abort(); + } + *argvp = argv; + return (new); +} + +static OPTION * +option(name) + char *name; +{ + OPTION tmp; + int typecompare __P((const void *, const void *)); + + tmp.name = name; + return ((OPTION *)bsearch(&tmp, options, + sizeof(options)/sizeof(OPTION), sizeof(OPTION), typecompare)); +} + +int +typecompare(a, b) + const void *a, *b; +{ + return (strcmp(((OPTION *)a)->name, ((OPTION *)b)->name)); +} |
