Teach git-update-index about gitlinks

diff --git a/builtin-reflog.c b/builtin-reflog.c
index ca22452e64f99a24f5f13923d2d6a756bcf82ade..4c39f1da98e5e690f28f5145a1ab5dba790da68d 100644 (file)
--- a/builtin-reflog.c
+++ b/builtin-reflog.c
@@ -13,7 +13,7 @@
  */
 
 static const char reflog_expire_usage[] =
-"git-reflog expire [--verbose] [--dry-run] [--fix-stale] [--expire=<time>] [--expire-unreachable=<time>] [--all] <refs>...";
+"git-reflog (show|expire) [--verbose] [--dry-run] [--stale-fix] [--expire=<time>] [--expire-unreachable=<time>] [--all] <refs>...";
 
 static unsigned long default_reflog_expire;
 static unsigned long default_reflog_expire_unreachable;
@@ -52,18 +52,18 @@ static int tree_is_complete(const unsigned char *sha1)
        if (tree->object.flags & INCOMPLETE)
                return 0;
 
-       desc.buf = tree->buffer;
-       desc.size = tree->size;
-       if (!desc.buf) {
-               char type[20];
-               void *data = read_sha1_file(sha1, type, &desc.size);
+       if (!tree->buffer) {
+               enum object_type type;
+               unsigned long size;
+               void *data = read_sha1_file(sha1, &type, &size);
                if (!data) {
                        tree->object.flags |= INCOMPLETE;
                        return 0;
                }
-               desc.buf = data;
                tree->buffer = data;
+               tree->size = size;
        }
+       init_tree_desc(&desc, tree->buffer, tree->size);
        complete = 1;
        while (tree_entry(&desc, &entry)) {
                if (!has_sha1_file(entry.sha1) ||
@@ -173,7 +173,6 @@ static int keep_entry(struct commit **it, unsigned char *sha1)
 {
        struct commit *commit;
 
-       *it = NULL;
        if (is_null_sha1(sha1))
                return 1;
        commit = lookup_commit_reference_gently(sha1, 1);
@@ -204,15 +203,22 @@ static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
        if (timestamp < cb->cmd->expire_total)
                goto prune;
 
+       old = new = NULL;
        if (cb->cmd->stalefix &&
            (!keep_entry(&old, osha1) || !keep_entry(&new, nsha1)))
                goto prune;
 
-       if ((timestamp < cb->cmd->expire_unreachable) &&
-           (!cb->ref_commit ||
-            (old && !in_merge_bases(old, cb->ref_commit)) ||
-            (new && !in_merge_bases(new, cb->ref_commit))))
-               goto prune;
+       if (timestamp < cb->cmd->expire_unreachable) {
+               if (!cb->ref_commit)
+                       goto prune;
+               if (!old && !is_null_sha1(osha1))
+                       old = lookup_commit_reference_gently(osha1, 1);
+               if (!new && !is_null_sha1(nsha1))
+                       new = lookup_commit_reference_gently(nsha1, 1);
+               if ((old && !in_merge_bases(old, &cb->ref_commit, 1)) ||
+                   (new && !in_merge_bases(new, &cb->ref_commit, 1)))
+                       goto prune;
+       }
 
        if (cb->newlog) {
                char sign = (tz < 0) ? '-' : '+';
@@ -236,20 +242,18 @@ static int expire_reflog(const char *ref, const unsigned char *sha1, int unused,
        struct cmd_reflog_expire_cb *cmd = cb_data;
        struct expire_reflog_cb cb;
        struct ref_lock *lock;
-       char *newlog_path = NULL;
+       char *log_file, *newlog_path = NULL;
        int status = 0;
 
-       if (strncmp(ref, "refs/", 5))
-               return error("not a ref '%s'", ref);
-
        memset(&cb, 0, sizeof(cb));
        /* we take the lock for the ref itself to prevent it from
         * getting updated.
         */
-       lock = lock_ref_sha1(ref + 5, sha1);
+       lock = lock_any_ref_for_update(ref, sha1);
        if (!lock)
                return error("cannot lock ref '%s'", ref);
-       if (!file_exists(lock->log_file))
+       log_file = xstrdup(git_path("logs/%s", ref));
+       if (!file_exists(log_file))
                goto finish;
        if (!cmd->dry_run) {
                newlog_path = xstrdup(git_path("logs/%s.lock", ref));
@@ -257,9 +261,6 @@ static int expire_reflog(const char *ref, const unsigned char *sha1, int unused,
        }
 
        cb.ref_commit = lookup_commit_reference_gently(sha1, 1);
-       if (!cb.ref_commit)
-               fprintf(stderr,
-                       "warning: ref '%s' does not point at a commit\n", ref);
        cb.ref = ref;
        cb.cmd = cmd;
        for_each_reflog_ent(ref, expire_reflog_ent, &cb);
@@ -268,13 +269,14 @@ static int expire_reflog(const char *ref, const unsigned char *sha1, int unused,
                if (fclose(cb.newlog))
                        status |= error("%s: %s", strerror(errno),
                                        newlog_path);
-               if (rename(newlog_path, lock->log_file)) {
+               if (rename(newlog_path, log_file)) {
                        status |= error("cannot rename %s to %s",
-                                       newlog_path, lock->log_file);
+                                       newlog_path, log_file);
                        unlink(newlog_path);
                }
        }
        free(newlog_path);
+       free(log_file);
        unlock_ref(lock);
        return status;
 }
@@ -319,9 +321,9 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix)
                const char *arg = argv[i];
                if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n"))
                        cb.dry_run = 1;
-               else if (!strncmp(arg, "--expire=", 9))
+               else if (!prefixcmp(arg, "--expire="))
                        cb.expire_total = approxidate(arg + 9);
-               else if (!strncmp(arg, "--expire-unreachable=", 21))
+               else if (!prefixcmp(arg, "--expire-unreachable="))
                        cb.expire_unreachable = approxidate(arg + 21);
                else if (!strcmp(arg, "--stale-fix"))
                        cb.stalefix = 1;
@@ -348,7 +350,7 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix)
        }
 
        if (do_all)
-               status |= for_each_ref(expire_reflog, &cb);
+               status |= for_each_reflog(expire_reflog, &cb);
        while (i < argc) {
                const char *ref = argv[i++];
                unsigned char sha1[20];
@@ -370,10 +372,16 @@ static const char reflog_usage[] =
 
 int cmd_reflog(int argc, const char **argv, const char *prefix)
 {
-       if (argc < 2)
-               usage(reflog_usage);
-       else if (!strcmp(argv[1], "expire"))
+       /* With no command, we default to showing it. */
+       if (argc < 2 || *argv[1] == '-')
+               return cmd_log_reflog(argc, argv, prefix);
+
+       if (!strcmp(argv[1], "show"))
+               return cmd_log_reflog(argc - 1, argv + 1, prefix);
+
+       if (!strcmp(argv[1], "expire"))
                return cmd_reflog_expire(argc - 1, argv + 1, prefix);
-       else
-               usage(reflog_usage);
+
+       /* Not a recognized reflog command..*/
+       usage(reflog_usage);
 }