Git 1.7.12-rc2
[git/git.git] / builtin / prune.c
CommitLineData
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"
dc347195 8#include "progress.h"
8ca12c0d 9#include "dir.h"
ba84a797 10
629de472 11static const char * const prune_usage[] = {
b35ddf41 12 "git prune [-n] [-v] [--expire <time>] [--] [<head>...]",
629de472
MB
13 NULL
14};
96f1e58f 15static int show_only;
b35ddf41 16static int verbose;
f01913e4 17static unsigned long expire;
bf0a59b3 18static int show_progress = -1;
ba84a797 19
db87e396 20static int prune_tmp_object(const char *path, const char *filename)
0e8316cc
BC
21{
22 const char *fullpath = mkpath("%s/%s", path, filename);
cbf731ed
AS
23 struct stat st;
24 if (lstat(fullpath, &st))
25 return error("Could not stat '%s'", fullpath);
26 if (st.st_mtime > expire)
27 return 0;
0e8316cc
BC
28 printf("Removing stale temporary file %s\n", fullpath);
29 if (!show_only)
691f1a28 30 unlink_or_warn(fullpath);
0e8316cc
BC
31 return 0;
32}
33
ba84a797
LT
34static int prune_object(char *path, const char *filename, const unsigned char *sha1)
35{
f01913e4 36 const char *fullpath = mkpath("%s/%s", path, filename);
cbf731ed
AS
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;
b35ddf41 42 if (show_only || verbose) {
21666f1a
NP
43 enum object_type type = sha1_object_info(sha1, NULL);
44 printf("%s %s\n", sha1_to_hex(sha1),
45 (type > 0) ? typename(type) : "unknown");
b35ddf41
MG
46 }
47 if (!show_only)
691f1a28 48 unlink_or_warn(fullpath);
ba84a797
LT
49 return 0;
50}
51
52static int prune_dir(int i, char *path)
53{
54 DIR *dir = opendir(path);
55 struct dirent *de;
56
57 if (!dir)
58 return 0;
59
60 while ((de = readdir(dir)) != NULL) {
61 char name[100];
62 unsigned char sha1[20];
ba84a797 63
8ca12c0d 64 if (is_dot_or_dotdot(de->d_name))
ba84a797 65 continue;
8ca12c0d 66 if (strlen(de->d_name) == 38) {
ba84a797 67 sprintf(name, "%02x", i);
8ca12c0d 68 memcpy(name+2, de->d_name, 39);
ba84a797
LT
69 if (get_sha1_hex(name, sha1) < 0)
70 break;
71
72 /*
73 * Do we know about this object?
74 * It must have been reachable
75 */
76 if (lookup_object(sha1))
77 continue;
78
79 prune_object(path, de->d_name, sha1);
80 continue;
81 }
3d32a46b
BC
82 if (!prefixcmp(de->d_name, "tmp_obj_")) {
83 prune_tmp_object(path, de->d_name);
84 continue;
85 }
ba84a797
LT
86 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
87 }
d34e70d6 88 closedir(dir);
3254d218
NP
89 if (!show_only)
90 rmdir(path);
ba84a797
LT
91 return 0;
92}
93
94static void prune_object_dir(const char *path)
95{
96 int i;
97 for (i = 0; i < 256; i++) {
98 static char dir[4096];
99 sprintf(dir, "%s/%02x", path, i);
100 prune_dir(i, dir);
101 }
102}
103
8464010f
DST
104/*
105 * Write errors (particularly out of space) can result in
106 * failed temporary packs (and more rarely indexes and other
9517e6b8 107 * files beginning with "tmp_") accumulating in the object
db87e396 108 * and the pack directories.
8464010f 109 */
db87e396 110static void remove_temporary_files(const char *path)
8464010f
DST
111{
112 DIR *dir;
113 struct dirent *de;
8464010f 114
db87e396 115 dir = opendir(path);
8464010f 116 if (!dir) {
db87e396 117 fprintf(stderr, "Unable to open directory %s\n", path);
8464010f
DST
118 return;
119 }
0e8316cc
BC
120 while ((de = readdir(dir)) != NULL)
121 if (!prefixcmp(de->d_name, "tmp_"))
db87e396 122 prune_tmp_object(path, de->d_name);
8464010f
DST
123 closedir(dir);
124}
125
a633fca0 126int cmd_prune(int argc, const char **argv, const char *prefix)
ba84a797 127{
24304816 128 struct rev_info revs;
bf0a59b3 129 struct progress *progress = NULL;
629de472 130 const struct option options[] = {
e21adb8c 131 OPT__DRY_RUN(&show_only, "do not remove, show only"),
fd03881a 132 OPT__VERBOSE(&verbose, "report pruned objects"),
bf0a59b3 133 OPT_BOOL(0, "progress", &show_progress, "show progress"),
629de472
MB
134 OPT_DATE(0, "expire", &expire,
135 "expire objects older than <time>"),
136 OPT_END()
137 };
db87e396 138 char *s;
ba84a797 139
cbf731ed 140 expire = ULONG_MAX;
16157b80 141 save_commit_buffer = 0;
dae556bd 142 read_replace_refs = 0;
a633fca0 143 init_revisions(&revs, prefix);
ba84a797 144
37782920 145 argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
fe308f53
JH
146 while (argc--) {
147 unsigned char sha1[20];
148 const char *name = *argv++;
149
150 if (!get_sha1(name, sha1)) {
151 struct object *object = parse_object(sha1);
152 if (!object)
153 die("bad object: %s", name);
154 add_pending_object(&revs, object, "");
155 }
156 else
157 die("unrecognized argument: %s", name);
158 }
bf0a59b3
JK
159
160 if (show_progress == -1)
161 show_progress = isatty(2);
162 if (show_progress)
163 progress = start_progress_delay("Checking connectivity", 0, 0, 2);
164
dc347195
NTND
165 mark_reachable_objects(&revs, 1, progress);
166 stop_progress(&progress);
ba84a797
LT
167 prune_object_dir(get_object_directory());
168
2eb53e65 169 prune_packed_objects(show_only);
db87e396
BC
170 remove_temporary_files(get_object_directory());
171 s = xstrdup(mkpath("%s/pack", get_object_directory()));
172 remove_temporary_files(s);
173 free(s);
ba84a797
LT
174 return 0;
175}