[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] [-v] [--expire <time>] [--] [<head>...]",
	NULL
};
static int show_only;
static int verbose;
static unsigned long expire;

static int prune_tmp_object(const char *path, const char *filename)
{
	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;
	}
	printf("Removing stale temporary file %s\n", fullpath);
	if (!show_only)
		unlink(fullpath);
	return 0;
}

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 || verbose) {
		enum object_type type = sha1_object_info(sha1, NULL);
		printf("%s %s\n", sha1_to_hex(sha1),
		       (type > 0) ? typename(type) : "unknown");
	}
	if (!show_only)
		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;
		}
		if (!prefixcmp(de->d_name, "tmp_obj_")) {
			prune_tmp_object(path, de->d_name);
			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
 * and the pack directories.
 */
static void remove_temporary_files(const char *path)
{
	DIR *dir;
	struct dirent *de;

	dir = opendir(path);
	if (!dir) {
		fprintf(stderr, "Unable to open directory %s\n", path);
		return;
	}
	while ((de = readdir(dir)) != NULL)
		if (!prefixcmp(de->d_name, "tmp_"))
			prune_tmp_object(path, de->d_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_BOOLEAN('v', NULL, &verbose,
			"report pruned objects"),
		OPT_DATE(0, "expire", &expire,
			 "expire objects older than <time>"),
		OPT_END()
	};
	char *s;

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

	argc = parse_options(argc, argv, options, prune_usage, 0);
	while (argc--) {
		unsigned char sha1[20];
		const char *name = *argv++;

		if (!get_sha1(name, sha1)) {
			struct object *object = parse_object(sha1);
			if (!object)
				die("bad object: %s", name);
			add_pending_object(&revs, object, "");
		}
		else
			die("unrecognized argument: %s", name);
	}
	mark_reachable_objects(&revs, 1);
	prune_object_dir(get_object_directory());

	prune_packed_objects(show_only);
	remove_temporary_files(get_object_directory());
	s = xstrdup(mkpath("%s/pack", get_object_directory()));
	remove_temporary_files(s);
	free(s);
	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	9	static const char * const prune_usage[] = {
b35ddf41	10	"git prune [-n] [-v] [--expire <time>] [--] [<head>...]",
629de472 MB	11	NULL
629de472 MB	12	};
96f1e58f	13	static int show_only;
b35ddf41	14	static int verbose;
f01913e4	15	static unsigned long expire;
ba84a797	16
db87e396	17	static int prune_tmp_object(const char path, const char filename)
0e8316cc BC	18	{
	19	const char *fullpath = mkpath("%s/%s", path, filename);
	20	if (expire) {
	21	struct stat st;
	22	if (lstat(fullpath, &st))
	23	return error("Could not stat '%s'", fullpath);
	24	if (st.st_mtime > expire)
	25	return 0;
	26	}
	27	printf("Removing stale temporary file %s\n", fullpath);
	28	if (!show_only)
	29	unlink(fullpath);
	30	return 0;
	31	}
	32
ba84a797 LT	33	static int prune_object(char path, const char filename, const unsigned char *sha1)
ba84a797 LT	34	{
f01913e4 JS	35	const char *fullpath = mkpath("%s/%s", path, filename);
	36	if (expire) {
	37	struct stat st;
	38	if (lstat(fullpath, &st))
	39	return error("Could not stat '%s'", fullpath);
	40	if (st.st_mtime > expire)
	41	return 0;
	42	}
b35ddf41	43	if (show_only \|\| verbose) {
21666f1a NP	44	enum object_type type = sha1_object_info(sha1, NULL);
	45	printf("%s %s\n", sha1_to_hex(sha1),
	46	(type > 0) ? typename(type) : "unknown");
b35ddf41 MG	47	}
b35ddf41 MG	48	if (!show_only)
f01913e4	49	unlink(fullpath);
ba84a797 LT	50	return 0;
	51	}
	52
	53	static int prune_dir(int i, char *path)
	54	{
	55	DIR *dir = opendir(path);
	56	struct dirent *de;
	57
	58	if (!dir)
	59	return 0;
	60
	61	while ((de = readdir(dir)) != NULL) {
	62	char name[100];
	63	unsigned char sha1[20];
	64	int len = strlen(de->d_name);
	65
	66	switch (len) {
	67	case 2:
	68	if (de->d_name[1] != '.')
	69	break;
	70	case 1:
	71	if (de->d_name[0] != '.')
	72	break;
	73	continue;
	74	case 38:
	75	sprintf(name, "%02x", i);
	76	memcpy(name+2, de->d_name, len+1);
	77	if (get_sha1_hex(name, sha1) < 0)
	78	break;
	79
	80	/*
	81	* Do we know about this object?
	82	* It must have been reachable
	83	*/
	84	if (lookup_object(sha1))
	85	continue;
	86
	87	prune_object(path, de->d_name, sha1);
	88	continue;
	89	}
3d32a46b BC	90	if (!prefixcmp(de->d_name, "tmp_obj_")) {
	91	prune_tmp_object(path, de->d_name);
	92	continue;
	93	}
ba84a797 LT	94	fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
ba84a797 LT	95	}
3254d218 NP	96	if (!show_only)
3254d218 NP	97	rmdir(path);
ba84a797 LT	98	closedir(dir);
	99	return 0;
	100	}
	101
	102	static void prune_object_dir(const char *path)
	103	{
	104	int i;
	105	for (i = 0; i < 256; i++) {
	106	static char dir[4096];
	107	sprintf(dir, "%s/%02x", path, i);
	108	prune_dir(i, dir);
	109	}
	110	}
	111
8464010f DST	112	/*
	113	* Write errors (particularly out of space) can result in
	114	* failed temporary packs (and more rarely indexes and other
db87e396 BC	115	* files begining with "tmp_") accumulating in the object
db87e396 BC	116	* and the pack directories.
8464010f	117	*/
db87e396	118	static void remove_temporary_files(const char *path)
8464010f DST	119	{
	120	DIR *dir;
	121	struct dirent *de;
8464010f	122
db87e396	123	dir = opendir(path);
8464010f	124	if (!dir) {
db87e396	125	fprintf(stderr, "Unable to open directory %s\n", path);
8464010f DST	126	return;
8464010f DST	127	}
0e8316cc BC	128	while ((de = readdir(dir)) != NULL)
0e8316cc BC	129	if (!prefixcmp(de->d_name, "tmp_"))
db87e396	130	prune_tmp_object(path, de->d_name);
8464010f DST	131	closedir(dir);
	132	}
	133
a633fca0	134	int cmd_prune(int argc, const char *argv, const char prefix)
ba84a797	135	{
24304816	136	struct rev_info revs;
629de472 MB	137	const struct option options[] = {
	138	OPT_BOOLEAN('n', NULL, &show_only,
	139	"do not remove, show only"),
b35ddf41 MG	140	OPT_BOOLEAN('v', NULL, &verbose,
b35ddf41 MG	141	"report pruned objects"),
629de472 MB	142	OPT_DATE(0, "expire", &expire,
	143	"expire objects older than <time>"),
	144	OPT_END()
	145	};
db87e396	146	char *s;
ba84a797	147
16157b80	148	save_commit_buffer = 0;
a633fca0	149	init_revisions(&revs, prefix);
ba84a797	150
629de472	151	argc = parse_options(argc, argv, options, prune_usage, 0);
fe308f53 JH	152	while (argc--) {
	153	unsigned char sha1[20];
	154	const char name = argv++;
	155
	156	if (!get_sha1(name, sha1)) {
	157	struct object *object = parse_object(sha1);
	158	if (!object)
	159	die("bad object: %s", name);
	160	add_pending_object(&revs, object, "");
	161	}
	162	else
	163	die("unrecognized argument: %s", name);
	164	}
629de472	165	mark_reachable_objects(&revs, 1);
ba84a797 LT	166	prune_object_dir(get_object_directory());
ba84a797 LT	167
2eb53e65	168	prune_packed_objects(show_only);
db87e396 BC	169	remove_temporary_files(get_object_directory());
	170	s = xstrdup(mkpath("%s/pack", get_object_directory()));
	171	remove_temporary_files(s);
	172	free(s);
ba84a797 LT	173	return 0;
ba84a797 LT	174	}