Merge branch 'maint'

diff --git a/refs.c b/refs.c
index 024211d72b5e21e1c87e98b0f7e3a6982525d82d..6eb5f5384611bb5d159d892a1bfd120d72e54b9b 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -275,10 +275,8 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
                                list = get_ref_dir(ref, list);
                                continue;
                        }
-                       if (!resolve_ref(ref, sha1, 1, &flag)) {
-                               error("%s points nowhere!", ref);
-                               continue;
-                       }
+                       if (!resolve_ref(ref, sha1, 1, &flag))
+                               hashclr(sha1);
                        list = add_ref(ref, sha1, flag, list, NULL);
                }
                free(ref);
@@ -287,6 +285,35 @@ static struct ref_list *get_ref_dir(const char *base, struct ref_list *list)
        return sort_ref_list(list);
 }
 
+struct warn_if_dangling_data {
+       const char *refname;
+       const char *msg_fmt;
+};
+
+static int warn_if_dangling_symref(const char *refname, const unsigned char *sha1,
+                                  int flags, void *cb_data)
+{
+       struct warn_if_dangling_data *d = cb_data;
+       const char *resolves_to;
+       unsigned char junk[20];
+
+       if (!(flags & REF_ISSYMREF))
+               return 0;
+
+       resolves_to = resolve_ref(refname, junk, 0, NULL);
+       if (!resolves_to || strcmp(resolves_to, d->refname))
+               return 0;
+
+       printf(d->msg_fmt, refname);
+       return 0;
+}
+
+void warn_dangling_symref(const char *msg_fmt, const char *refname)
+{
+       struct warn_if_dangling_data data = { refname, msg_fmt };
+       for_each_rawref(warn_if_dangling_symref, &data);
+}
+
 static struct ref_list *get_loose_refs(void)
 {
        if (!cached_refs.did_loose) {
@@ -498,16 +525,19 @@ int read_ref(const char *ref, unsigned char *sha1)
        return -1;
 }
 
+#define DO_FOR_EACH_INCLUDE_BROKEN 01
 static int do_one_ref(const char *base, each_ref_fn fn, int trim,
-                     void *cb_data, struct ref_list *entry)
+                     int flags, void *cb_data, struct ref_list *entry)
 {
        if (strncmp(base, entry->name, trim))
                return 0;
-       if (is_null_sha1(entry->sha1))
-               return 0;
-       if (!has_sha1_file(entry->sha1)) {
-               error("%s does not point to a valid object!", entry->name);
-               return 0;
+       if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) {
+               if (is_null_sha1(entry->sha1))
+                       return 0;
+               if (!has_sha1_file(entry->sha1)) {
+                       error("%s does not point to a valid object!", entry->name);
+                       return 0;
+               }
        }
        current_ref = entry;
        return fn(entry->name + trim, entry->sha1, entry->flag, cb_data);
@@ -561,7 +591,7 @@ int peel_ref(const char *ref, unsigned char *sha1)
 }
 
 static int do_for_each_ref(const char *base, each_ref_fn fn, int trim,
-                          void *cb_data)
+                          int flags, void *cb_data)
 {
        int retval = 0;
        struct ref_list *packed = get_packed_refs();
@@ -570,7 +600,7 @@ static int do_for_each_ref(const char *base, each_ref_fn fn, int trim,
        struct ref_list *extra;
 
        for (extra = extra_refs; extra; extra = extra->next)
-               retval = do_one_ref(base, fn, trim, cb_data, extra);
+               retval = do_one_ref(base, fn, trim, flags, cb_data, extra);
 
        while (packed && loose) {
                struct ref_list *entry;
@@ -586,13 +616,13 @@ static int do_for_each_ref(const char *base, each_ref_fn fn, int trim,
                        entry = packed;
                        packed = packed->next;
                }
-               retval = do_one_ref(base, fn, trim, cb_data, entry);
+               retval = do_one_ref(base, fn, trim, flags, cb_data, entry);
                if (retval)
                        goto end_each;
        }
 
        for (packed = packed ? packed : loose; packed; packed = packed->next) {
-               retval = do_one_ref(base, fn, trim, cb_data, packed);
+               retval = do_one_ref(base, fn, trim, flags, cb_data, packed);
                if (retval)
                        goto end_each;
        }
@@ -614,22 +644,28 @@ int head_ref(each_ref_fn fn, void *cb_data)
 
 int for_each_ref(each_ref_fn fn, void *cb_data)
 {
-       return do_for_each_ref("refs/", fn, 0, cb_data);
+       return do_for_each_ref("refs/", fn, 0, 0, cb_data);
 }
 
 int for_each_tag_ref(each_ref_fn fn, void *cb_data)
 {
-       return do_for_each_ref("refs/tags/", fn, 10, cb_data);
+       return do_for_each_ref("refs/tags/", fn, 10, 0, cb_data);
 }
 
 int for_each_branch_ref(each_ref_fn fn, void *cb_data)
 {
-       return do_for_each_ref("refs/heads/", fn, 11, cb_data);
+       return do_for_each_ref("refs/heads/", fn, 11, 0, cb_data);
 }
 
 int for_each_remote_ref(each_ref_fn fn, void *cb_data)
 {
-       return do_for_each_ref("refs/remotes/", fn, 13, cb_data);
+       return do_for_each_ref("refs/remotes/", fn, 13, 0, cb_data);
+}
+
+int for_each_rawref(each_ref_fn fn, void *cb_data)
+{
+       return do_for_each_ref("refs/", fn, 0,
+                              DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
 }
 
 /*