gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / builtin-prune.c
blobc767a0ac8930166315c26d8ece2e72b4f1942d55
1 #include "cache.h"
2 #include "commit.h"
3 #include "diff.h"
4 #include "revision.h"
5 #include "builtin.h"
6 #include "reachable.h"
7 #include "parse-options.h"
9 static const char * const prune_usage[] = {
10 "git prune [-n] [--expire <time>] [--] [<head>...]",
11 NULL
13 static int show_only;
14 static unsigned long expire;
16 static int prune_tmp_object(char *path, const char *filename)
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;
26 printf("Removing stale temporary file %s\n", fullpath);
27 if (!show_only)
28 unlink(fullpath);
29 return 0;
32 static int prune_object(char *path, const char *filename, const unsigned char *sha1)
34 const char *fullpath = mkpath("%s/%s", path, filename);
35 if (expire) {
36 struct stat st;
37 if (lstat(fullpath, &st))
38 return error("Could not stat '%s'", fullpath);
39 if (st.st_mtime > expire)
40 return 0;
42 if (show_only) {
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");
46 } else
47 unlink(fullpath);
48 return 0;
51 static int prune_dir(int i, char *path)
53 DIR *dir = opendir(path);
54 struct dirent *de;
56 if (!dir)
57 return 0;
59 while ((de = readdir(dir)) != NULL) {
60 char name[100];
61 unsigned char sha1[20];
62 int len = strlen(de->d_name);
64 switch (len) {
65 case 2:
66 if (de->d_name[1] != '.')
67 break;
68 case 1:
69 if (de->d_name[0] != '.')
70 break;
71 continue;
72 case 38:
73 sprintf(name, "%02x", i);
74 memcpy(name+2, de->d_name, len+1);
75 if (get_sha1_hex(name, sha1) < 0)
76 break;
79 * Do we know about this object?
80 * It must have been reachable
82 if (lookup_object(sha1))
83 continue;
85 prune_object(path, de->d_name, sha1);
86 continue;
88 if (!prefixcmp(de->d_name, "tmp_obj_")) {
89 prune_tmp_object(path, de->d_name);
90 continue;
92 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
94 if (!show_only)
95 rmdir(path);
96 closedir(dir);
97 return 0;
100 static void prune_object_dir(const char *path)
102 int i;
103 for (i = 0; i < 256; i++) {
104 static char dir[4096];
105 sprintf(dir, "%s/%02x", path, i);
106 prune_dir(i, dir);
111 * Write errors (particularly out of space) can result in
112 * failed temporary packs (and more rarely indexes and other
113 * files begining with "tmp_") accumulating in the
114 * object directory.
116 static void remove_temporary_files(void)
118 DIR *dir;
119 struct dirent *de;
120 char* dirname=get_object_directory();
122 dir = opendir(dirname);
123 if (!dir) {
124 fprintf(stderr, "Unable to open object directory %s\n",
125 dirname);
126 return;
128 while ((de = readdir(dir)) != NULL)
129 if (!prefixcmp(de->d_name, "tmp_"))
130 prune_tmp_object(dirname, de->d_name);
131 closedir(dir);
134 int cmd_prune(int argc, const char **argv, const char *prefix)
136 struct rev_info revs;
137 const struct option options[] = {
138 OPT_BOOLEAN('n', NULL, &show_only,
139 "do not remove, show only"),
140 OPT_DATE(0, "expire", &expire,
141 "expire objects older than <time>"),
142 OPT_END()
145 save_commit_buffer = 0;
146 init_revisions(&revs, prefix);
148 argc = parse_options(argc, argv, options, prune_usage, 0);
149 while (argc--) {
150 unsigned char sha1[20];
151 const char *name = *argv++;
153 if (!get_sha1(name, sha1)) {
154 struct object *object = parse_object(sha1);
155 if (!object)
156 die("bad object: %s", name);
157 add_pending_object(&revs, object, "");
159 else
160 die("unrecognized argument: %s", name);
162 mark_reachable_objects(&revs, 1);
163 prune_object_dir(get_object_directory());
165 prune_packed_objects(show_only);
166 remove_temporary_files();
167 return 0;