let pack-objects do the writing of unreachable objects as loose objects
[gitweb.git] / builtin-prune.c
index 6f0ba0d04d789f17e3f0136a3591a9465af7e71d..25f9304b829c9074e8a034eba5e34c38794058a4 100644 (file)
@@ -4,25 +4,31 @@
 #include "revision.h"
 #include "builtin.h"
 #include "reachable.h"
+#include "parse-options.h"
 
-static const char prune_usage[] = "git-prune [-n]";
+static const char * const prune_usage[] = {
+       "git-prune [-n] [--expire <time>] [--] [<head>...]",
+       NULL
+};
 static int show_only;
+static unsigned long expire;
 
 static int prune_object(char *path, const char *filename, const unsigned char *sha1)
 {
-       char buf[20];
-       const char *type;
-
-       if (show_only) {
-               if (sha1_object_info(sha1, buf, NULL))
-                       type = "unknown";
-               else
-                       type = buf;
-               printf("%s %s\n", sha1_to_hex(sha1), type);
-               return 0;
+       const char *fullpath = mkpath("%s/%s", path, filename);
+       if (expire) {
+               struct stat st;
+               if (lstat(fullpath, &st))
+                       return error("Could not stat '%s'", fullpath);
+               if (st.st_mtime > expire)
+                       return 0;
        }
-       unlink(mkpath("%s/%s", path, filename));
-       rmdir(path);
+       if (show_only) {
+               enum object_type type = sha1_object_info(sha1, NULL);
+               printf("%s %s\n", sha1_to_hex(sha1),
+                      (type > 0) ? typename(type) : "unknown");
+       } else
+               unlink(fullpath);
        return 0;
 }
 
@@ -65,6 +71,8 @@ static int prune_dir(int i, char *path)
                }
                fprintf(stderr, "bad sha1 file: %s/%s\n", path, de->d_name);
        }
+       if (!show_only)
+               rmdir(path);
        closedir(dir);
        return 0;
 }
@@ -79,27 +87,77 @@ static void prune_object_dir(const char *path)
        }
 }
 
-int cmd_prune(int argc, const char **argv, const char *prefix)
+/*
+ * Write errors (particularly out of space) can result in
+ * failed temporary packs (and more rarely indexes and other
+ * files begining with "tmp_") accumulating in the
+ * object directory.
+ */
+static void remove_temporary_files(void)
 {
-       int i;
-       struct rev_info revs;
+       DIR *dir;
+       struct dirent *de;
+       char* dirname=get_object_directory();
 
-       for (i = 1; i < argc; i++) {
-               const char *arg = argv[i];
-               if (!strcmp(arg, "-n")) {
-                       show_only = 1;
-                       continue;
+       dir = opendir(dirname);
+       if (!dir) {
+               fprintf(stderr, "Unable to open object directory %s\n",
+                       dirname);
+               return;
+       }
+       while ((de = readdir(dir)) != NULL) {
+               if (!prefixcmp(de->d_name, "tmp_")) {
+                       char name[PATH_MAX];
+                       int c = snprintf(name, PATH_MAX, "%s/%s",
+                                        dirname, de->d_name);
+                       if (c < 0 || c >= PATH_MAX)
+                               continue;
+                       if (expire) {
+                               struct stat st;
+                               if (stat(name, &st) != 0 || st.st_mtime >= expire)
+                                       continue;
+                       }
+                       printf("Removing stale temporary file %s\n", name);
+                       if (!show_only)
+                               unlink(name);
                }
-               usage(prune_usage);
        }
+       closedir(dir);
+}
+
+int cmd_prune(int argc, const char **argv, const char *prefix)
+{
+       struct rev_info revs;
+       const struct option options[] = {
+               OPT_BOOLEAN('n', NULL, &show_only,
+                           "do not remove, show only"),
+               OPT_DATE(0, "expire", &expire,
+                        "expire objects older than <time>"),
+               OPT_END()
+       };
 
        save_commit_buffer = 0;
        init_revisions(&revs, prefix);
-       mark_reachable_objects(&revs, 1);
 
+       argc = parse_options(argc, argv, options, prune_usage, 0);
+       while (argc--) {
+               unsigned char sha1[20];
+               const char *name = *argv++;
+
+               if (!get_sha1(name, sha1)) {
+                       struct object *object = parse_object(sha1);
+                       if (!object)
+                               die("bad object: %s", name);
+                       add_pending_object(&revs, object, "");
+               }
+               else
+                       die("unrecognized argument: %s", name);
+       }
+       mark_reachable_objects(&revs, 1);
        prune_object_dir(get_object_directory());
 
        sync();
        prune_packed_objects(show_only);
+       remove_temporary_files();
        return 0;
 }