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#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
#include "reachable.h"
static const char prune_usage[] = "git-prune [-n]";
static int show_only;
static unsigned long expire;
static int prune_object(char *path, const char *filename, const unsigned char *sha1)
{
const char *fullpath = mkpath("%s/%s", path, filename);
if (expire) {
struct stat st;
if (lstat(fullpath, &st))
return error("Could not stat '%s'", fullpath);
if (st.st_mtime > expire)
return 0;
}
if (show_only) {
enum object_type type = sha1_object_info(sha1, NULL);
printf("%s %s\n", sha1_to_hex(sha1),
(type > 0) ? typename(type) : "unknown");
} else
unlink(fullpath);
return 0;
}
static int prune_dir(int i, char *path)
{
DIR *dir = opendir(path);
struct dirent *de;
if (!dir)
return 0;
while ((de = readdir(dir)) != NULL) {
char name[100];
unsigned char sha1[20];
int len = strlen(de->d_name);
switch (len) {
case 2:
if (de->d_name[1] != '.')
break;
case 1:
if (de->d_name[0] != '.')
break;
continue;
case 38:
sprintf(name, "%02x", i);
memcpy(name+2, de->d_name, len+1);
if (get_sha1_hex(name, sha1) < 0)
break;
/*
* Do we know about this object?
* It must have been reachable
*/
if (lookup_object(sha1))
continue;
prune_object(path, de->d_name, sha1);
continue;
}
fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
}
if (!show_only)
rmdir(path);
closedir(dir);
return 0;
}
static void prune_object_dir(const char *path)
{
int i;
for (i = 0; i < 256; i++) {
static char dir[4096];
sprintf(dir, "%s/%02x", path, i);
prune_dir(i, dir);
}
}
/*
* Write errors (particularly out of space) can result in
* failed temporary packs (and more rarely indexes and other
* files begining with "tmp_") accumulating in the
* object directory.
*/
static void remove_temporary_files(void)
{
DIR *dir;
struct dirent *de;
char* dirname=get_object_directory();
dir = opendir(dirname);
if (!dir) {
fprintf(stderr, "Unable to open object directory %s\n",
dirname);
return;
}
while ((de = readdir(dir)) != NULL) {
if (!prefixcmp(de->d_name, "tmp_")) {
char name[PATH_MAX];
int c = snprintf(name, PATH_MAX, "%s/%s",
dirname, de->d_name);
if (c < 0 || c >= PATH_MAX)
continue;
if (expire) {
struct stat st;
if (stat(name, &st) != 0 || st.st_mtime >= expire)
continue;
}
printf("Removing stale temporary file %s\n", name);
if (!show_only)
unlink(name);
}
}
closedir(dir);
}
int cmd_prune(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info revs;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "-n")) {
show_only = 1;
continue;
}
if (!strcmp(arg, "--expire")) {
if (++i < argc) {
expire = approxidate(argv[i]);
continue;
}
}
else if (!prefixcmp(arg, "--expire=")) {
expire = approxidate(arg + 9);
continue;
}
usage(prune_usage);
}
save_commit_buffer = 0;
init_revisions(&revs, prefix);
mark_reachable_objects(&revs, 1);
prune_object_dir(get_object_directory());
sync();
prune_packed_objects(show_only);
remove_temporary_files();
return 0;
}
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