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",
"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;
/* basic@{time or number} format to query ref-log */
reflog_len = at = 0;
if (str[len-1] == '}') {
- for (at = 1; at < len - 1; at++) {
+ for (at = 0; at < len - 1; at++) {
if (str[at] == '@' && str[at+1] == '{') {
reflog_len = (len-1) - (at+2);
len = at;
}
/* Accept only unambiguous ref paths. */
- if (ambiguous_path(str, len))
+ if (len && 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;
- }
- }
+ if (!len && reflog_len) {
+ /* allow "@{...}" to mean the current branch reflog */
+ refs_found = dwim_ref("HEAD", 4, sha1, &real_ref);
+ } else
+ refs_found = dwim_ref(str, len, sha1, &real_ref);
if (!refs_found)
return -1;
fprintf(stderr, warning, len, str);
if (reflog_len) {
- /* 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;
+
+ /*
+ * We'll have an independent reflog for "HEAD" eventually
+ * which won't be a synonym for the current branch reflog.
+ * In the mean time prevent people from getting used to
+ * such a synonym until the work is completed.
+ */
+ if (len && !strncmp("HEAD", str, len) &&
+ !strncmp(real_ref, "refs/", 5)) {
+ error("reflog for HEAD has not been implemented yet\n"
+ "Maybe you could try %s%s instead, "
+ "or just %s for current branch..",
+ strchr(real_ref+5, '/')+1, str+len, str+len);
+ exit(-1);
+ }
+
+ /* Is it asking for N-th entry, or approxidate? */
for (i = nth = 0; 0 <= nth && i < reflog_len; i++) {
char ch = str[at+2+i];
if ('0' <= ch && ch <= '9')
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);