Merge branch 'master' into sp/gfi

diff --git a/sha1_name.c b/sha1_name.c
index 6d7cd78381414aa2fef31d31d46fbb24b0aaab1d..9dfb3ac57403793e6c6f78f2f75fb61c0a56c4bc 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -235,7 +235,7 @@ static int ambiguous_path(const char *path, int len)
        return slash;
 }
 
-static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
+int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref)
 {
        static const char *fmt[] = {
                "%.*s",
@@ -246,13 +246,32 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
                "refs/remotes/%.*s/HEAD",
                NULL
        };
+       const char **p, *r;
+       int refs_found = 0;
+
+       *ref = NULL;
+       for (p = fmt; *p; p++) {
+               unsigned char sha1_from_ref[20];
+               unsigned char *this_result;
+
+               this_result = refs_found ? sha1_from_ref : sha1;
+               r = resolve_ref(mkpath(*p, len, str), this_result, 1, NULL);
+               if (r) {
+                       if (!refs_found++)
+                               *ref = xstrdup(r);
+                       if (!warn_ambiguous_refs)
+                               break;
+               }
+       }
+       return refs_found;
+}
+
+static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
+{
        static const char *warning = "warning: refname '%.*s' is ambiguous.\n";
-       const char **p, *ref;
        char *real_ref = NULL;
        int refs_found = 0;
        int at, reflog_len;
-       unsigned char *this_result;
-       unsigned char sha1_from_ref[20];
 
        if (len == 40 && !get_sha1_hex(str, sha1))
                return 0;
@@ -273,16 +292,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
        if (ambiguous_path(str, len))
                return -1;
 
-       for (p = fmt; *p; p++) {
-               this_result = refs_found ? sha1_from_ref : sha1;
-               ref = resolve_ref(mkpath(*p, len, str), this_result, 1, NULL);
-               if (ref) {
-                       if (!refs_found++)
-                               real_ref = xstrdup(ref);
-                       if (!warn_ambiguous_refs)
-                               break;
-               }
-       }
+       refs_found = dwim_ref(str, len, sha1, &real_ref);
 
        if (!refs_found)
                return -1;
@@ -294,6 +304,9 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
                /* Is it asking for N-th entry, or approxidate? */
                int nth, i;
                unsigned long at_time;
+               unsigned long co_time;
+               int co_tz, co_cnt;
+
                for (i = nth = 0; 0 <= nth && i < reflog_len; i++) {
                        char ch = str[at+2+i];
                        if ('0' <= ch && ch <= '9')
@@ -305,7 +318,18 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
                        at_time = 0;
                else
                        at_time = approxidate(str + at + 2);
-               read_ref_at(real_ref, at_time, nth, sha1);
+               if (read_ref_at(real_ref, at_time, nth, sha1, NULL,
+                               &co_time, &co_tz, &co_cnt)) {
+                       if (at_time)
+                               fprintf(stderr,
+                                       "warning: Log for '%.*s' only goes "
+                                       "back to %s.\n", len, str,
+                                       show_rfc2822_date(co_time, co_tz));
+                       else
+                               fprintf(stderr,
+                                       "warning: Log for '%.*s' only has "
+                                       "%d entries.\n", len, str, co_cnt);
+               }
        }
 
        free(real_ref);