gitk: Second try to work around the command line limit on Windows
[git/dscho.git] / builtin / prune.c
blob81f915ec315eb75e529fed8f2f6bab436755f598
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"
8 #include "dir.h"
10 static const char * const prune_usage[] = {
11 "git prune [-n] [-v] [--expire <time>] [--] [<head>...]",
12 NULL
14 static int show_only;
15 static int verbose;
16 static unsigned long expire;
18 static int prune_tmp_object(const char *path, const char *filename)
20 const char *fullpath = mkpath("%s/%s", path, filename);
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 printf("Removing stale temporary file %s\n", fullpath);
27 if (!show_only)
28 unlink_or_warn(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 struct stat st;
36 if (lstat(fullpath, &st))
37 return error("Could not stat '%s'", fullpath);
38 if (st.st_mtime > expire)
39 return 0;
40 if (show_only || verbose) {
41 enum object_type type = sha1_object_info(sha1, NULL);
42 printf("%s %s\n", sha1_to_hex(sha1),
43 (type > 0) ? typename(type) : "unknown");
45 if (!show_only)
46 unlink_or_warn(fullpath);
47 return 0;
50 static int prune_dir(int i, char *path)
52 DIR *dir = opendir(path);
53 struct dirent *de;
55 if (!dir)
56 return 0;
58 while ((de = readdir(dir)) != NULL) {
59 char name[100];
60 unsigned char sha1[20];
62 if (is_dot_or_dotdot(de->d_name))
63 continue;
64 if (strlen(de->d_name) == 38) {
65 sprintf(name, "%02x", i);
66 memcpy(name+2, de->d_name, 39);
67 if (get_sha1_hex(name, sha1) < 0)
68 break;
71 * Do we know about this object?
72 * It must have been reachable
74 if (lookup_object(sha1))
75 continue;
77 prune_object(path, de->d_name, sha1);
78 continue;
80 if (!prefixcmp(de->d_name, "tmp_obj_")) {
81 prune_tmp_object(path, de->d_name);
82 continue;
84 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
86 if (!show_only)
87 rmdir(path);
88 closedir(dir);
89 return 0;
92 static void prune_object_dir(const char *path)
94 int i;
95 for (i = 0; i < 256; i++) {
96 static char dir[4096];
97 sprintf(dir, "%s/%02x", path, i);
98 prune_dir(i, dir);
103 * Write errors (particularly out of space) can result in
104 * failed temporary packs (and more rarely indexes and other
105 * files beginning with "tmp_") accumulating in the object
106 * and the pack directories.
108 static void remove_temporary_files(const char *path)
110 DIR *dir;
111 struct dirent *de;
113 dir = opendir(path);
114 if (!dir) {
115 fprintf(stderr, "Unable to open directory %s\n", path);
116 return;
118 while ((de = readdir(dir)) != NULL)
119 if (!prefixcmp(de->d_name, "tmp_"))
120 prune_tmp_object(path, de->d_name);
121 closedir(dir);
124 int cmd_prune(int argc, const char **argv, const char *prefix)
126 struct rev_info revs;
127 const struct option options[] = {
128 OPT_BOOLEAN('n', NULL, &show_only,
129 "do not remove, show only"),
130 OPT_BOOLEAN('v', NULL, &verbose,
131 "report pruned objects"),
132 OPT_DATE(0, "expire", &expire,
133 "expire objects older than <time>"),
134 OPT_END()
136 char *s;
138 expire = ULONG_MAX;
139 save_commit_buffer = 0;
140 read_replace_refs = 0;
141 init_revisions(&revs, prefix);
143 argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
144 while (argc--) {
145 unsigned char sha1[20];
146 const char *name = *argv++;
148 if (!get_sha1(name, sha1)) {
149 struct object *object = parse_object(sha1);
150 if (!object)
151 die("bad object: %s", name);
152 add_pending_object(&revs, object, "");
154 else
155 die("unrecognized argument: %s", name);
157 mark_reachable_objects(&revs, 1);
158 prune_object_dir(get_object_directory());
160 prune_packed_objects(show_only);
161 remove_temporary_files(get_object_directory());
162 s = xstrdup(mkpath("%s/pack", get_object_directory()));
163 remove_temporary_files(s);
164 free(s);
165 return 0;