git-log.txt,rev-list-options.txt: -n/--max-count is commit limiting

diff --git a/tag.c b/tag.c
index ceb86557c5eedb03cbdc81929b7d109b44d440d5..7d38cc0f4de1c16b5b52725ba7a6a361650a6b41 100644 (file)
--- a/tag.c
+++ b/tag.c
@@ -4,6 +4,9 @@
 #include "tree.h"
 #include "blob.h"
 
+#define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
+#define PGP_MESSAGE "-----BEGIN PGP MESSAGE-----"
+
 const char *tag_type = "tag";
 
 struct object *deref_tag(struct object *o, const char *warn, int warnlen)
@@ -28,15 +31,32 @@ struct tag *lookup_tag(const unsigned char *sha1)
                return create_object(sha1, OBJ_TAG, alloc_tag_node());
        if (!obj->type)
                obj->type = OBJ_TAG;
-        if (obj->type != OBJ_TAG) {
-                error("Object %s is a %s, not a tag",
-                      sha1_to_hex(sha1), typename(obj->type));
-                return NULL;
-        }
-        return (struct tag *) obj;
+       if (obj->type != OBJ_TAG) {
+               error("Object %s is a %s, not a tag",
+                     sha1_to_hex(sha1), typename(obj->type));
+               return NULL;
+       }
+       return (struct tag *) obj;
 }
 
-int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
+static unsigned long parse_tag_date(const char *buf, const char *tail)
+{
+       const char *dateptr;
+
+       while (buf < tail && *buf++ != '>')
+               /* nada */;
+       if (buf >= tail)
+               return 0;
+       dateptr = buf;
+       while (buf < tail && *buf++ != '\n')
+               /* nada */;
+       if (buf >= tail)
+               return 0;
+       /* dateptr < buf && buf[-1] == '\n', so strtoul will stop at buf-1 */
+       return strtoul(dateptr, NULL, 10);
+}
+
+int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
 {
        unsigned char sha1[20];
        char type[20];
@@ -77,7 +97,9 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
                item->tagged = NULL;
        }
 
-       if (prefixcmp(bufptr, "tag "))
+       if (bufptr + 4 < tail && !prefixcmp(bufptr, "tag "))
+               ;               /* good */
+       else
                return -1;
        bufptr += 4;
        nl = memchr(bufptr, '\n', tail - bufptr);
@@ -86,6 +108,11 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
        item->tag = xmemdupz(bufptr, nl - bufptr);
        bufptr = nl + 1;
 
+       if (bufptr + 7 < tail && !prefixcmp(bufptr, "tagger "))
+               item->date = parse_tag_date(bufptr, tail);
+       else
+               item->date = 0;
+
        return 0;
 }
 
@@ -111,3 +138,15 @@ int parse_tag(struct tag *item)
        free(data);
        return ret;
 }
+
+size_t parse_signature(const char *buf, unsigned long size)
+{
+       char *eol;
+       size_t len = 0;
+       while (len < size && prefixcmp(buf + len, PGP_SIGNATURE) &&
+                       prefixcmp(buf + len, PGP_MESSAGE)) {
+               eol = memchr(buf + len, '\n', size - len);
+               len += eol ? eol - (buf + len) + 1 : size - len;
+       }
+       return len;
+}