gitweb: check if-modified-since for feeds

diff --git a/builtin-clone.c b/builtin-clone.c
index 2feac9c5cb8e85ae2b25c5a7a0a602e84e210f4a..1e9c9aa8446370070d56126ad851701c4c418de0 100644 (file)
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -192,15 +192,15 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
 
        dir = opendir(src->buf);
        if (!dir)
-               die("failed to open %s\n", src->buf);
+               die("failed to open %s", src->buf);
 
        if (mkdir(dest->buf, 0777)) {
                if (errno != EEXIST)
-                       die("failed to create directory %s\n", dest->buf);
+                       die("failed to create directory %s", dest->buf);
                else if (stat(dest->buf, &buf))
-                       die("failed to stat %s\n", dest->buf);
+                       die("failed to stat %s", dest->buf);
                else if (!S_ISDIR(buf.st_mode))
-                       die("%s exists and is not a directory\n", dest->buf);
+                       die("%s exists and is not a directory", dest->buf);
        }
 
        strbuf_addch(src, '/');
@@ -224,16 +224,16 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
                }
 
                if (unlink(dest->buf) && errno != ENOENT)
-                       die("failed to unlink %s\n", dest->buf);
+                       die("failed to unlink %s", dest->buf);
                if (!option_no_hardlinks) {
                        if (!link(src->buf, dest->buf))
                                continue;
                        if (option_local)
-                               die("failed to create link %s\n", dest->buf);
+                               die("failed to create link %s", dest->buf);
                        option_no_hardlinks = 1;
                }
                if (copy_file(dest->buf, src->buf, 0666))
-                       die("failed to copy file to %s\n", dest->buf);
+                       die("failed to copy file to %s", dest->buf);
        }
        closedir(dir);
 }
@@ -357,6 +357,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        struct stat buf;
        const char *repo_name, *repo, *work_tree, *git_dir;
        char *path, *dir;
+       int dest_exists;
        const struct ref *refs, *head_points_at, *remote_head, *mapped_refs;
        struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
        struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
@@ -406,8 +407,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                dir = guess_dir_name(repo_name, is_bundle, option_bare);
        strip_trailing_slashes(dir);
 
-       if (!stat(dir, &buf))
-               die("destination directory '%s' already exists.", dir);
+       dest_exists = !stat(dir, &buf);
+       if (dest_exists && !is_empty_dir(dir))
+               die("destination path '%s' already exists and is not "
+                       "an empty directory.", dir);
 
        strbuf_addf(&reflog_msg, "clone: from %s", repo);
 
@@ -431,7 +434,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                if (safe_create_leading_directories_const(work_tree) < 0)
                        die("could not create leading directories of '%s': %s",
                                        work_tree, strerror(errno));
-               if (mkdir(work_tree, 0755))
+               if (!dest_exists && mkdir(work_tree, 0755))
                        die("could not create work tree dir '%s': %s.",
                                        work_tree, strerror(errno));
                set_git_work_tree(work_tree);
@@ -519,14 +522,23 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                                             option_upload_pack);
 
                refs = transport_get_remote_refs(transport);
-               transport_fetch_refs(transport, refs);
+               if(refs)
+                       transport_fetch_refs(transport, refs);
        }
 
-       clear_extra_refs();
+       if (refs) {
+               clear_extra_refs();
 
-       mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
+               mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
 
-       head_points_at = locate_head(refs, mapped_refs, &remote_head);
+               head_points_at = locate_head(refs, mapped_refs, &remote_head);
+       }
+       else {
+               warning("You appear to have cloned an empty repository.");
+               head_points_at = NULL;
+               remote_head = NULL;
+               option_no_checkout = 1;
+       }
 
        if (head_points_at) {
                /* Local default branch link */