Clone: remove fragile path-handling code.

Also standardized on 3-space indentation. Sorry
about that.

src/clone.c

@@ -19,12 +19,25 @@
 GIT_BEGIN_DECL
 
 
-static int git_checkout_branch(git_repository *repo, const char *branchname)
+static int git_checkout_force(git_repository *repo)
 {
    /* TODO */
    return 0;
 }
 
+static int update_head_to_remote(git_repository *repo, git_remote *remote)
+{
+   int retcode = 0;
+
+   /* Get the remote's HEAD. This is always the first ref in remote->refs. */
+   git_buf remote_default_branch = GIT_BUF_INIT;
+   /* TODO */
+
+   git_buf_free(&remote_default_branch);
+
+   return retcode;
+}
+
 /*
  * submodules?
  * filemodes?
@@ -43,13 +56,19 @@ static int setup_remotes_and_fetch(git_repository *repo,
 
    if (!stats) stats = &dummy_stats;
 
+   /* Create the "origin" remote */
    if (!git_remote_add(&origin, repo, "origin", origin_url)) {
+      /* Connect and download everything */
       if (!git_remote_connect(origin, GIT_DIR_FETCH)) {
          if (!git_remote_download(origin, &bytes, stats)) {
+            /* Create "origin/foo" branches for all remote branches */
             if (!git_remote_update_tips(origin, NULL)) {
+               /* Point HEAD to the same ref as the remote's head */
+               if (!update_head_to_remote(repo, origin)) {
                   retcode = 0;
                }
             }
+         }
          git_remote_disconnect(origin);
       }
       git_remote_free(origin);
@@ -60,18 +79,23 @@ static int setup_remotes_and_fetch(git_repository *repo,
 
 static int clone_internal(git_repository **out,
                           const char *origin_url,
-                          const char *fullpath,
+                          const char *path,
                           git_indexer_stats *stats,
                           int is_bare)
 {
    int retcode = GIT_ERROR;
    git_repository *repo = NULL;
 
-  if (!(retcode = git_repository_init(&repo, fullpath, is_bare))) {
+   if (git_path_exists(path)) {
+      giterr_set(GITERR_INVALID, "Path '%s' already exists.", path);
+      return GIT_ERROR;
+   }
+
+   if (!(retcode = git_repository_init(&repo, path, is_bare))) {
       if ((retcode = setup_remotes_and_fetch(repo, origin_url, stats)) < 0) {
          /* Failed to fetch; clean up */
          git_repository_free(repo);
-      git_futils_rmdir_r(fullpath, GIT_DIRREMOVAL_FILES_AND_DIRS);
+         git_futils_rmdir_r(path, GIT_DIRREMOVAL_FILES_AND_DIRS);
       } else {
          *out = repo;
          retcode = 0;
@@ -86,15 +110,7 @@ int git_clone_bare(git_repository **out,
                    const char *dest_path,
                    git_indexer_stats *stats)
 {
-  char fullpath[512] = {0};
-
-  p_realpath(dest_path, fullpath);
-  if (git_path_exists(fullpath)) {
-    giterr_set(GITERR_INVALID, "Destination already exists: %s", fullpath);
-    return GIT_ERROR;
-  }
-
-  return clone_internal(out, origin_url, fullpath, stats, 1);
+   return clone_internal(out, origin_url, dest_path, stats, 1);
 }
 
 
@@ -104,18 +120,9 @@ int git_clone(git_repository **out,
               git_indexer_stats *stats)
 {
    int retcode = GIT_ERROR;
-  char fullpath[512] = {0};
 
-  p_realpath(workdir_path, fullpath);
-  if (git_path_exists(fullpath)) {
-    giterr_set(GITERR_INVALID, "Destination already exists: %s", fullpath);
-    return GIT_ERROR;
-  }
-
-  if (!clone_internal(out, origin_url, workdir_path, stats, 0)) {
-    char default_branch_name[256] = "master";
-    /* TODO */
-    retcode = git_checkout_branch(*out, default_branch_name);
+   if (!(retcode = clone_internal(out, origin_url, workdir_path, stats, 0))) {
+      retcode = git_checkout_force(*out);
    }
 
    return retcode;

tests-clar/clone/clone.c

@@ -86,16 +86,22 @@ void test_clone_clone__local(void)
 }
 
 
-void test_clone_clone__network(void)
+void test_clone_clone__network_full(void)
 {
 #if 0
   cl_git_pass(git_clone(&g_repo,
                         "https://github.com/libgit2/libgit2.git",
                         "./libgit2", NULL));
+  git_futils_rmdir_r("./libgit2", GIT_DIRREMOVAL_FILES_AND_DIRS);
+#endif
+}
+
+void test_clone_clone__network_bare(void)
+{
+#if 0
   cl_git_pass(git_clone_bare(&g_repo,
                              "https://github.com/libgit2/libgit2.git",
                              "./libgit2.git", NULL));
-  git_futils_rmdir_r("./libgit2", GIT_DIRREMOVAL_FILES_AND_DIRS);
   git_futils_rmdir_r("./libgit2.git", GIT_DIRREMOVAL_FILES_AND_DIRS);
 #endif
 }