Merge branch 'nd/traces'
[git] / builtin / prune-packed.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "progress.h"
4 #include "parse-options.h"
5
6 static const char * const prune_packed_usage[] = {
7         N_("git prune-packed [-n|--dry-run] [-q|--quiet]"),
8         NULL
9 };
10
11 static struct progress *progress;
12
13 static void prune_dir(int i, DIR *dir, char *pathname, int len, int opts)
14 {
15         struct dirent *de;
16         char hex[40];
17
18         sprintf(hex, "%02x", i);
19         while ((de = readdir(dir)) != NULL) {
20                 unsigned char sha1[20];
21                 if (strlen(de->d_name) != 38)
22                         continue;
23                 memcpy(hex+2, de->d_name, 38);
24                 if (get_sha1_hex(hex, sha1))
25                         continue;
26                 if (!has_sha1_pack(sha1))
27                         continue;
28                 memcpy(pathname + len, de->d_name, 38);
29                 if (opts & PRUNE_PACKED_DRY_RUN)
30                         printf("rm -f %s\n", pathname);
31                 else
32                         unlink_or_warn(pathname);
33                 display_progress(progress, i + 1);
34         }
35 }
36
37 void prune_packed_objects(int opts)
38 {
39         int i;
40         static char pathname[PATH_MAX];
41         const char *dir = get_object_directory();
42         int len = strlen(dir);
43
44         if (opts & PRUNE_PACKED_VERBOSE)
45                 progress = start_progress_delay("Removing duplicate objects",
46                         256, 95, 2);
47
48         if (len > PATH_MAX - 42)
49                 die("impossible object directory");
50         memcpy(pathname, dir, len);
51         if (len && pathname[len-1] != '/')
52                 pathname[len++] = '/';
53         for (i = 0; i < 256; i++) {
54                 DIR *d;
55
56                 display_progress(progress, i + 1);
57                 sprintf(pathname + len, "%02x/", i);
58                 d = opendir(pathname);
59                 if (!d)
60                         continue;
61                 prune_dir(i, d, pathname, len + 3, opts);
62                 closedir(d);
63                 pathname[len + 2] = '\0';
64                 rmdir(pathname);
65         }
66         stop_progress(&progress);
67 }
68
69 int cmd_prune_packed(int argc, const char **argv, const char *prefix)
70 {
71         int opts = isatty(2) ? PRUNE_PACKED_VERBOSE : 0;
72         const struct option prune_packed_options[] = {
73                 OPT_BIT('n', "dry-run", &opts, N_("dry run"),
74                         PRUNE_PACKED_DRY_RUN),
75                 OPT_NEGBIT('q', "quiet", &opts, N_("be quiet"),
76                            PRUNE_PACKED_VERBOSE),
77                 OPT_END()
78         };
79
80         argc = parse_options(argc, argv, prefix, prune_packed_options,
81                              prune_packed_usage, 0);
82
83         prune_packed_objects(opts);
84         return 0;
85 }