Documentation: help: explain 'man.viewer' multiple values

diff --git a/builtin-prune.c b/builtin-prune.c
index 44df59e4a70f84cdebac94f2591765ada8d4b92d..bb8ead92cf41c3cbdbc421a1490fb40ce19f11c3 100644 (file)
--- a/builtin-prune.c
+++ b/builtin-prune.c
@@ -7,15 +7,24 @@
 
 static const char prune_usage[] = "git-prune [-n]";
 static int show_only;
+static unsigned long expire;
 
 static int prune_object(char *path, const char *filename, const unsigned char *sha1)
 {
+       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;
+       }
        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(mkpath("%s/%s", path, filename));
+               unlink(fullpath);
        return 0;
 }
 
@@ -74,6 +83,44 @@ static void prune_object_dir(const char *path)
        }
 }
 
+/*
+ * 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)
+{
+       DIR *dir;
+       struct dirent *de;
+       char* dirname=get_object_directory();
+
+       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);
+               }
+       }
+       closedir(dir);
+}
+
 int cmd_prune(int argc, const char **argv, const char *prefix)
 {
        int i;
@@ -85,6 +132,16 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
                        show_only = 1;
                        continue;
                }
+               if (!strcmp(arg, "--expire")) {
+                       if (++i < argc) {
+                               expire = approxidate(argv[i]);
+                               continue;
+                       }
+               }
+               else if (!prefixcmp(arg, "--expire=")) {
+                       expire = approxidate(arg + 9);
+                       continue;
+               }
                usage(prune_usage);
        }
 
@@ -96,5 +153,6 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
 
        sync();
        prune_packed_objects(show_only);
+       remove_temporary_files();
        return 0;
 }