NetBSD/usr.bin/find/option.c

158 lines
4.7 KiB
C

/*-
* Copyright (c) 1990 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 5.8 (Berkeley) 6/4/91";
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <fts.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "find.h"
typedef struct _option {
char *name; /* option name */
enum ntype token; /* token type */
PLAN *(*create)(); /* create function */
#define O_NONE 0x01 /* no call required */
#define O_ZERO 0x02 /* pass: nothing */
#define O_ARGV 0x04 /* pass: argv, increment argv */
#define O_ARGVP 0x08 /* pass: *argv, N_OK || N_EXEC */
int flags;
} OPTION;
OPTION 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,
"-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;
OPTION *option();
argv = *argvp;
if ((p = option(*argv)) == NULL) {
(void)fprintf(stderr, "find: unknown option %s.\n", *argv);
exit(1);
}
++argv;
if (p->flags & (O_ARGV|O_ARGVP) && !*argv) {
(void)fprintf(stderr,
"find: %s requires additional arguments.\n", *--argv);
exit(1);
}
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;
}
*argvp = argv;
return(new);
}
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));
}
typecompare(a, b)
const void *a, *b;
{
return(strcmp(((OPTION *)a)->name, ((OPTION *)b)->name));
}