[thirdparty/git.git] / builtin-prune.c

#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
#include "reachable.h"
#include "parse-options.h"

static const char * const prune_usage[] = {
	"git-prune [-n] [--expire <time>] [--] [<head>...]",
	NULL
};
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)
{
	struct rev_info revs;
	const struct option options[] = {
		OPT_BOOLEAN('n', NULL, &show_only,
			    "do not remove, show only"),
		OPT_DATE(0, "expire", &expire,
			 "expire objects older than <time>"),
		OPT_END()
	};

	save_commit_buffer = 0;
	init_revisions(&revs, prefix);

	argc = parse_options(argc, argv, options, prune_usage, 0);
	if (argc)
		die ("unrecognized argument: %s", name);
	mark_reachable_objects(&revs, 1);
	prune_object_dir(get_object_directory());

	sync();
	prune_packed_objects(show_only);
	remove_temporary_files();
	return 0;
}
Commit	Line	Data
ba84a797	1	#include "cache.h"
ba84a797	2	#include "commit.h"
ba84a797 LT	3	#include "diff.h"
	4	#include "revision.h"
	5	#include "builtin.h"
94421474	6	#include "reachable.h"
629de472	7	#include "parse-options.h"
ba84a797	8
629de472 MB	9	static const char * const prune_usage[] = {
	10	"git-prune [-n] [--expire <time>] [--] [<head>...]",
	11	NULL
	12	};
96f1e58f	13	static int show_only;
f01913e4	14	static unsigned long expire;
ba84a797 LT	15
	16	static int prune_object(char path, const char filename, const unsigned char *sha1)
	17	{
f01913e4 JS	18	const char *fullpath = mkpath("%s/%s", path, filename);
	19	if (expire) {
	20	struct stat st;
	21	if (lstat(fullpath, &st))
	22	return error("Could not stat '%s'", fullpath);
	23	if (st.st_mtime > expire)
	24	return 0;
	25	}
ba84a797	26	if (show_only) {
21666f1a NP	27	enum object_type type = sha1_object_info(sha1, NULL);
	28	printf("%s %s\n", sha1_to_hex(sha1),
	29	(type > 0) ? typename(type) : "unknown");
3254d218	30	} else
f01913e4	31	unlink(fullpath);
ba84a797 LT	32	return 0;
	33	}
	34
	35	static int prune_dir(int i, char *path)
	36	{
	37	DIR *dir = opendir(path);
	38	struct dirent *de;
	39
	40	if (!dir)
	41	return 0;
	42
	43	while ((de = readdir(dir)) != NULL) {
	44	char name[100];
	45	unsigned char sha1[20];
	46	int len = strlen(de->d_name);
	47
	48	switch (len) {
	49	case 2:
	50	if (de->d_name[1] != '.')
	51	break;
	52	case 1:
	53	if (de->d_name[0] != '.')
	54	break;
	55	continue;
	56	case 38:
	57	sprintf(name, "%02x", i);
	58	memcpy(name+2, de->d_name, len+1);
	59	if (get_sha1_hex(name, sha1) < 0)
	60	break;
	61
	62	/*
	63	* Do we know about this object?
	64	* It must have been reachable
	65	*/
	66	if (lookup_object(sha1))
	67	continue;
	68
	69	prune_object(path, de->d_name, sha1);
	70	continue;
	71	}
	72	fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
	73	}
3254d218 NP	74	if (!show_only)
3254d218 NP	75	rmdir(path);
ba84a797 LT	76	closedir(dir);
	77	return 0;
	78	}
	79
	80	static void prune_object_dir(const char *path)
	81	{
	82	int i;
	83	for (i = 0; i < 256; i++) {
	84	static char dir[4096];
	85	sprintf(dir, "%s/%02x", path, i);
	86	prune_dir(i, dir);
	87	}
	88	}
	89
8464010f DST	90	/*
	91	* Write errors (particularly out of space) can result in
	92	* failed temporary packs (and more rarely indexes and other
	93	* files begining with "tmp_") accumulating in the
	94	* object directory.
	95	*/
	96	static void remove_temporary_files(void)
	97	{
	98	DIR *dir;
	99	struct dirent *de;
	100	char* dirname=get_object_directory();
	101
	102	dir = opendir(dirname);
	103	if (!dir) {
	104	fprintf(stderr, "Unable to open object directory %s\n",
	105	dirname);
	106	return;
	107	}
	108	while ((de = readdir(dir)) != NULL) {
	109	if (!prefixcmp(de->d_name, "tmp_")) {
	110	char name[PATH_MAX];
	111	int c = snprintf(name, PATH_MAX, "%s/%s",
	112	dirname, de->d_name);
	113	if (c < 0 \|\| c >= PATH_MAX)
	114	continue;
	115	if (expire) {
	116	struct stat st;
	117	if (stat(name, &st) != 0 \|\| st.st_mtime >= expire)
	118	continue;
	119	}
	120	printf("Removing stale temporary file %s\n", name);
	121	if (!show_only)
	122	unlink(name);
	123	}
	124	}
	125	closedir(dir);
	126	}
	127
a633fca0	128	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	129	{
24304816	130	struct rev_info revs;
629de472 MB	131	const struct option options[] = {
	132	OPT_BOOLEAN('n', NULL, &show_only,
	133	"do not remove, show only"),
	134	OPT_DATE(0, "expire", &expire,
	135	"expire objects older than <time>"),
	136	OPT_END()
	137	};
ba84a797	138
16157b80	139	save_commit_buffer = 0;
a633fca0	140	init_revisions(&revs, prefix);
ba84a797	141
629de472 MB	142	argc = parse_options(argc, argv, options, prune_usage, 0);
	143	if (argc)
	144	die ("unrecognized argument: %s", name);
	145	mark_reachable_objects(&revs, 1);
ba84a797 LT	146	prune_object_dir(get_object_directory());
ba84a797 LT	147
2eb53e65 BF	148	sync();
2eb53e65 BF	149	prune_packed_objects(show_only);
8464010f	150	remove_temporary_files();
ba84a797 LT	151	return 0;
ba84a797 LT	152	}