convert object type handling from a string to a number
[git/git.git] / builtin-prune.c
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
8 static const char prune_usage[] = "git-prune [-n]";
9 static int show_only;
10
11 static int prune_object(char *path, const char *filename, const unsigned char *sha1)
12 {
13 if (show_only) {
14 enum object_type type = sha1_object_info(sha1, NULL);
15 printf("%s %s\n", sha1_to_hex(sha1),
16 (type > 0) ? typename(type) : "unknown");
17 return 0;
18 }
19 unlink(mkpath("%s/%s", path, filename));
20 rmdir(path);
21 return 0;
22 }
23
24 static int prune_dir(int i, char *path)
25 {
26 DIR *dir = opendir(path);
27 struct dirent *de;
28
29 if (!dir)
30 return 0;
31
32 while ((de = readdir(dir)) != NULL) {
33 char name[100];
34 unsigned char sha1[20];
35 int len = strlen(de->d_name);
36
37 switch (len) {
38 case 2:
39 if (de->d_name[1] != '.')
40 break;
41 case 1:
42 if (de->d_name[0] != '.')
43 break;
44 continue;
45 case 38:
46 sprintf(name, "%02x", i);
47 memcpy(name+2, de->d_name, len+1);
48 if (get_sha1_hex(name, sha1) < 0)
49 break;
50
51 /*
52 * Do we know about this object?
53 * It must have been reachable
54 */
55 if (lookup_object(sha1))
56 continue;
57
58 prune_object(path, de->d_name, sha1);
59 continue;
60 }
61 fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
62 }
63 closedir(dir);
64 return 0;
65 }
66
67 static void prune_object_dir(const char *path)
68 {
69 int i;
70 for (i = 0; i < 256; i++) {
71 static char dir[4096];
72 sprintf(dir, "%s/%02x", path, i);
73 prune_dir(i, dir);
74 }
75 }
76
77 int cmd_prune(int argc, const char **argv, const char *prefix)
78 {
79 int i;
80 struct rev_info revs;
81
82 for (i = 1; i < argc; i++) {
83 const char *arg = argv[i];
84 if (!strcmp(arg, "-n")) {
85 show_only = 1;
86 continue;
87 }
88 usage(prune_usage);
89 }
90
91 save_commit_buffer = 0;
92 init_revisions(&revs, prefix);
93 mark_reachable_objects(&revs, 1);
94
95 prune_object_dir(get_object_directory());
96
97 sync();
98 prune_packed_objects(show_only);
99 return 0;
100 }