#include "cpio_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 "matching.h"
#include "pathmatch.h"
struct match {
struct match *next;
int matches;
char pattern[1];
};
struct 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 cpio *);
static int match_exclusion(struct match *, const char *pathname);
static int match_inclusion(struct match *, const char *pathname);
int
exclude(struct cpio *cpio, const char *pattern)
{
struct matching *matching;
if (cpio->matching == NULL)
initialize_matching(cpio);
matching = cpio->matching;
add_pattern(&(matching->exclusions), pattern);
matching->exclusions_count++;
return (0);
}
#if 0
int
exclude_from_file(struct cpio *cpio, const char *pathname)
{
return (process_lines(cpio, pathname, &exclude));
}
#endif
int
include(struct cpio *cpio, const char *pattern)
{
struct matching *matching;
if (cpio->matching == NULL)
initialize_matching(cpio);
matching = cpio->matching;
add_pattern(&(matching->inclusions), pattern);
matching->inclusions_count++;
matching->inclusions_unmatched_count++;
return (0);
}
int
include_from_file(struct cpio *cpio, const char *pathname)
{
struct line_reader *lr;
const char *p;
int ret = 0;
lr = process_lines_init(pathname, '\n');
while ((p = process_lines_next(lr)) != NULL)
if (include(cpio, p) != 0)
ret = -1;
process_lines_free(lr);
return (ret);
}
static void
add_pattern(struct match **list, const char *pattern)
{
struct match *match;
match = malloc(sizeof(*match) + strlen(pattern) + 1);
if (match == NULL)
cpio_errc(1, errno, "Out of memory");
if (pattern[0] == '/')
pattern++;
strcpy(match->pattern, pattern);
if (match->pattern[strlen(match->pattern)-1] == '/')
match->pattern[strlen(match->pattern)-1] = '\0';
match->next = *list;
*list = match;
match->matches = 0;
}
int
excluded(struct cpio *cpio, const char *pathname)
{
struct matching *matching;
struct match *match;
struct match *matched;
matching = cpio->matching;
if (matching == NULL)
return (0);
for (match = matching->exclusions; match != NULL; match = match->next){
if (match_exclusion(match, pathname))
return (1);
}
matched = NULL;
for (match = matching->inclusions; match != NULL; match = match->next){
if (match_inclusion(match, pathname)) {
if (match->matches == 0) {
match->matches++;
matching->inclusions_unmatched_count++;
return (0);
}
matched = match;
}
}
if (matched != NULL) {
matched->matches++;
return (0);
}
if (matching->inclusions != NULL)
return (1);
return (0);
}
int
match_exclusion(struct match *match, const char *pathname)
{
return (pathmatch(match->pattern,
pathname,
PATHMATCH_NO_ANCHOR_START | PATHMATCH_NO_ANCHOR_END));
}
int
match_inclusion(struct match *match, const char *pathname)
{
return (pathmatch(match->pattern, pathname, 0));
}
void
cleanup_exclusions(struct cpio *cpio)
{
struct match *p, *q;
if (cpio->matching) {
p = cpio->matching->inclusions;
while (p != NULL) {
q = p;
p = p->next;
free(q);
}
p = cpio->matching->exclusions;
while (p != NULL) {
q = p;
p = p->next;
free(q);
}
free(cpio->matching);
}
}
static void
initialize_matching(struct cpio *cpio)
{
cpio->matching = malloc(sizeof(*cpio->matching));
if (cpio->matching == NULL)
cpio_errc(1, errno, "No memory");
memset(cpio->matching, 0, sizeof(*cpio->matching));
}
int
unmatched_inclusions(struct cpio *cpio)
{
struct matching *matching;
matching = cpio->matching;
if (matching == NULL)
return (0);
return (matching->inclusions_unmatched_count);
}