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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] [--grace=time]";
static int show_only;
static int prune_grace_period;
static int prune_object(char *path, const char *filename, const unsigned char *sha1)
{
char buf[20];
const char *type;
if (show_only) {
if (sha1_object_info(sha1, buf, NULL))
type = "unknown";
else
type = buf;
printf("%s %s\n", sha1_to_hex(sha1), type);
return 0;
}
unlink(mkpath("%s/%s", path, filename));
rmdir(path);
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);
struct stat st;
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;
if (prune_grace_period > 0 &&
!stat(mkpath("%s/%s", path, de->d_name), &st) &&
st.st_mtime > prune_grace_period)
continue;
prune_object(path, de->d_name, sha1);
continue;
}
fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
}
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);
}
}
static int git_prune_config(const char *var, const char *value)
{
if (!strcmp(var, "gc.prunegrace")) {
if (!strcmp(value, "off"))
prune_grace_period = 0;
else
prune_grace_period = approxidate(value);
return 0;
}
return git_default_config(var, value);
}
int cmd_prune(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info revs;
prune_grace_period = time(NULL)-24*60*60;
git_config(git_prune_config);
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "-n")) {
show_only = 1;
continue;
}
if (!strncmp(arg, "--grace=", 8)) {
if (!strcmp(arg+8, "off"))
prune_grace_period = 0;
else
prune_grace_period = approxidate(arg+8);
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);
return 0;
}
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