284 lines
6.9 KiB
C
284 lines
6.9 KiB
C
/*-
|
|
* Copyright (c) 2003-2007 Tim Kientzle
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.
|
|
*/
|
|
|
|
#include "lafe_platform.h"
|
|
__FBSDID("$FreeBSD: src/usr.bin/cpio/matching.c,v 1.2 2008/06/21 02:20:20 kientzle Exp $");
|
|
|
|
#ifdef HAVE_ERRNO_H
|
|
#include <errno.h>
|
|
#endif
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include "err.h"
|
|
#include "line_reader.h"
|
|
#include "matching.h"
|
|
#include "pathmatch.h"
|
|
|
|
struct match {
|
|
struct match *next;
|
|
int matches;
|
|
char pattern[1];
|
|
};
|
|
|
|
struct lafe_matching {
|
|
struct match *exclusions;
|
|
int exclusions_count;
|
|
struct match *inclusions;
|
|
int inclusions_count;
|
|
int inclusions_unmatched_count;
|
|
};
|
|
|
|
static void add_pattern(struct match **list, const char *pattern);
|
|
static void initialize_matching(struct lafe_matching **);
|
|
static int match_exclusion(struct match *, const char *pathname);
|
|
static int match_inclusion(struct match *, const char *pathname);
|
|
|
|
/*
|
|
* The matching logic here needs to be re-thought. I started out to
|
|
* try to mimic gtar's matching logic, but it's not entirely
|
|
* consistent. In particular 'tar -t' and 'tar -x' interpret patterns
|
|
* on the command line as anchored, but --exclude doesn't.
|
|
*/
|
|
|
|
/*
|
|
* Utility functions to manage exclusion/inclusion patterns
|
|
*/
|
|
|
|
int
|
|
lafe_exclude(struct lafe_matching **matching, const char *pattern)
|
|
{
|
|
|
|
if (*matching == NULL)
|
|
initialize_matching(matching);
|
|
add_pattern(&((*matching)->exclusions), pattern);
|
|
(*matching)->exclusions_count++;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
lafe_exclude_from_file(struct lafe_matching **matching, const char *pathname)
|
|
{
|
|
struct lafe_line_reader *lr;
|
|
const char *p;
|
|
int ret = 0;
|
|
|
|
lr = lafe_line_reader(pathname, 0);
|
|
while ((p = lafe_line_reader_next(lr)) != NULL) {
|
|
if (lafe_exclude(matching, p) != 0)
|
|
ret = -1;
|
|
}
|
|
lafe_line_reader_free(lr);
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
lafe_include(struct lafe_matching **matching, const char *pattern)
|
|
{
|
|
|
|
if (*matching == NULL)
|
|
initialize_matching(matching);
|
|
add_pattern(&((*matching)->inclusions), pattern);
|
|
(*matching)->inclusions_count++;
|
|
(*matching)->inclusions_unmatched_count++;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
lafe_include_from_file(struct lafe_matching **matching, const char *pathname,
|
|
int nullSeparator)
|
|
{
|
|
struct lafe_line_reader *lr;
|
|
const char *p;
|
|
int ret = 0;
|
|
|
|
lr = lafe_line_reader(pathname, nullSeparator);
|
|
while ((p = lafe_line_reader_next(lr)) != NULL) {
|
|
if (lafe_include(matching, p) != 0)
|
|
ret = -1;
|
|
}
|
|
lafe_line_reader_free(lr);
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
add_pattern(struct match **list, const char *pattern)
|
|
{
|
|
struct match *match;
|
|
size_t len;
|
|
|
|
len = strlen(pattern);
|
|
match = malloc(sizeof(*match) + len + 1);
|
|
if (match == NULL)
|
|
lafe_errc(1, errno, "Out of memory");
|
|
strcpy(match->pattern, pattern);
|
|
/* Both "foo/" and "foo" should match "foo/bar". */
|
|
if (len && match->pattern[len - 1] == '/')
|
|
match->pattern[strlen(match->pattern)-1] = '\0';
|
|
match->next = *list;
|
|
*list = match;
|
|
match->matches = 0;
|
|
}
|
|
|
|
|
|
int
|
|
lafe_excluded(struct lafe_matching *matching, const char *pathname)
|
|
{
|
|
struct match *match;
|
|
struct match *matched;
|
|
|
|
if (matching == NULL)
|
|
return (0);
|
|
|
|
/* Exclusions take priority */
|
|
for (match = matching->exclusions; match != NULL; match = match->next){
|
|
if (match_exclusion(match, pathname))
|
|
return (1);
|
|
}
|
|
|
|
/* Then check for inclusions */
|
|
matched = NULL;
|
|
for (match = matching->inclusions; match != NULL; match = match->next){
|
|
if (match_inclusion(match, pathname)) {
|
|
/*
|
|
* If this pattern has never been matched,
|
|
* then we're done.
|
|
*/
|
|
if (match->matches == 0) {
|
|
match->matches++;
|
|
matching->inclusions_unmatched_count--;
|
|
return (0);
|
|
}
|
|
/*
|
|
* Otherwise, remember the match but keep checking
|
|
* in case we can tick off an unmatched pattern.
|
|
*/
|
|
matched = match;
|
|
}
|
|
}
|
|
/*
|
|
* We didn't find a pattern that had never been matched, but
|
|
* we did find a match, so count it and exit.
|
|
*/
|
|
if (matched != NULL) {
|
|
matched->matches++;
|
|
return (0);
|
|
}
|
|
|
|
/* If there were inclusions, default is to exclude. */
|
|
if (matching->inclusions != NULL)
|
|
return (1);
|
|
|
|
/* No explicit inclusions, default is to match. */
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This is a little odd, but it matches the default behavior of
|
|
* gtar. In particular, 'a*b' will match 'foo/a1111/222b/bar'
|
|
*
|
|
*/
|
|
static int
|
|
match_exclusion(struct match *match, const char *pathname)
|
|
{
|
|
return (lafe_pathmatch(match->pattern,
|
|
pathname,
|
|
PATHMATCH_NO_ANCHOR_START | PATHMATCH_NO_ANCHOR_END));
|
|
}
|
|
|
|
/*
|
|
* Again, mimic gtar: inclusions are always anchored (have to match
|
|
* the beginning of the path) even though exclusions are not anchored.
|
|
*/
|
|
static int
|
|
match_inclusion(struct match *match, const char *pathname)
|
|
{
|
|
#if 0
|
|
return (lafe_pathmatch(match->pattern, pathname, 0));
|
|
#else
|
|
return (lafe_pathmatch(match->pattern, pathname, PATHMATCH_NO_ANCHOR_END));
|
|
#endif
|
|
}
|
|
|
|
void
|
|
lafe_cleanup_exclusions(struct lafe_matching **matching)
|
|
{
|
|
struct match *p, *q;
|
|
|
|
if (*matching == NULL)
|
|
return;
|
|
|
|
for (p = (*matching)->inclusions; p != NULL; ) {
|
|
q = p;
|
|
p = p->next;
|
|
free(q);
|
|
}
|
|
|
|
for (p = (*matching)->exclusions; p != NULL; ) {
|
|
q = p;
|
|
p = p->next;
|
|
free(q);
|
|
}
|
|
|
|
free(*matching);
|
|
*matching = NULL;
|
|
}
|
|
|
|
static void
|
|
initialize_matching(struct lafe_matching **matching)
|
|
{
|
|
*matching = calloc(sizeof(**matching), 1);
|
|
if (*matching == NULL)
|
|
lafe_errc(1, errno, "No memory");
|
|
}
|
|
|
|
int
|
|
lafe_unmatched_inclusions(struct lafe_matching *matching)
|
|
{
|
|
|
|
if (matching == NULL)
|
|
return (0);
|
|
return (matching->inclusions_unmatched_count);
|
|
}
|
|
|
|
int
|
|
lafe_unmatched_inclusions_warn(struct lafe_matching *matching, const char *msg)
|
|
{
|
|
struct match *p;
|
|
|
|
if (matching == NULL)
|
|
return (0);
|
|
|
|
for (p = matching->inclusions; p != NULL; p = p->next) {
|
|
if (p->matches == 0)
|
|
lafe_warnc(0, "%s: %s", p->pattern, msg);
|
|
}
|
|
|
|
return (matching->inclusions_unmatched_count);
|
|
}
|