diff options
Diffstat (limited to 'sha1_name.c')
| -rw-r--r-- | sha1_name.c | 118 |
1 files changed, 92 insertions, 26 deletions
diff --git a/sha1_name.c b/sha1_name.c index 6d7cd78381..a7efa96f35 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -235,24 +235,79 @@ static int ambiguous_path(const char *path, int len) return slash; } +static const char *ref_fmt[] = { + "%.*s", + "refs/%.*s", + "refs/tags/%.*s", + "refs/heads/%.*s", + "refs/remotes/%.*s", + "refs/remotes/%.*s/HEAD", + NULL +}; + +int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref) +{ + const char **p, *r; + int refs_found = 0; + + *ref = NULL; + for (p = ref_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; +} + +int dwim_log(const char *str, int len, unsigned char *sha1, char **log) +{ + const char **p; + int logs_found = 0; + + *log = NULL; + for (p = ref_fmt; *p; p++) { + struct stat st; + unsigned char hash[20]; + char path[PATH_MAX]; + const char *ref, *it; + + strcpy(path, mkpath(*p, len, str)); + ref = resolve_ref(path, hash, 0, NULL); + if (!ref) + continue; + if (!stat(git_path("logs/%s", path), &st) && + S_ISREG(st.st_mode)) + it = path; + else if (strcmp(ref, path) && + !stat(git_path("logs/%s", ref), &st) && + S_ISREG(st.st_mode)) + it = ref; + else + continue; + if (!logs_found++) { + *log = xstrdup(it); + hashcpy(sha1, hash); + } + if (!warn_ambiguous_refs) + break; + } + return logs_found; +} + static int get_sha1_basic(const char *str, int len, unsigned char *sha1) { - static const char *fmt[] = { - "%.*s", - "refs/%.*s", - "refs/tags/%.*s", - "refs/heads/%.*s", - "refs/remotes/%.*s", - "refs/remotes/%.*s/HEAD", - NULL - }; 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; @@ -260,7 +315,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1) /* 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; @@ -270,19 +325,16 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1) } /* 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 if (reflog_len) + refs_found = dwim_log(str, len, sha1, &real_ref); + else + refs_found = dwim_ref(str, len, sha1, &real_ref); if (!refs_found) return -1; @@ -291,9 +343,12 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1) 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; + + /* 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') @@ -305,7 +360,18 @@ 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); |