Add git_clone and git_clone_bare.

So far they only create a repo, setup the "origin"
remote, and fetch. The API probably needs work as
well; there's no way to get progress information
at this point.

Also uncovered a shortcoming; git_remote_download
doesn't fetch over local transport.

1 files changed, 112 insertions, 0 deletions

diff --git a/src/clone.c b/src/clone.c
new file mode 100644
index 000000000..bdb5d9cd6
--- /dev/null
+++ b/src/clone.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2009-2012 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include <assert.h>
+
+#include "git2/clone.h"
+#include "git2/remote.h"
+
+#include "common.h"
+#include "remote.h"
+#include "fileops.h"
+// TODO #include "checkout.h"
+
+GIT_BEGIN_DECL
+
+/*
+ * submodules?
+ * filemodes?
+ */
+
+static int setup_remotes_and_fetch(git_repository *repo, const char *origin_url)
+{
+  int retcode = GIT_ERROR;
+  git_remote *origin = NULL;
+  git_off_t bytes = 0;
+  git_indexer_stats stats = {0};
+
+  if (!git_remote_new(&origin, repo, "origin", origin_url, NULL)) {
+    if (!git_remote_save(origin)) {
+      if (!git_remote_connect(origin, GIT_DIR_FETCH)) {
+        if (!git_remote_download(origin, &bytes, &stats)) {
+          if (!git_remote_update_tips(origin, NULL)) {
+            // TODO
+            // if (!git_checkout(...)) {
+            retcode = 0;
+            // }
+          }
+        }
+        git_remote_disconnect(origin);
+      }
+    }
+    git_remote_free(origin);
+ }
+
+  return retcode;
+}
+
+int git_clone(git_repository **out, const char *origin_url, const char *dest_path)
+{
+  int retcode = GIT_ERROR;
+  git_repository *repo = NULL;
+  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;
+  }
+
+  /* Initialize the dest/.git directory */
+  if (!(retcode = git_repository_init(&repo, fullpath, 0))) {
+    if ((retcode = setup_remotes_and_fetch(repo, origin_url)) < 0) {
+      /* Failed to fetch; clean up */
+      git_repository_free(repo);
+      git_futils_rmdir_r(fullpath, GIT_DIRREMOVAL_FILES_AND_DIRS);
+    } else {
+      /* Fetched successfully, do a checkout */
+      /* if (!(retcode = git_checkout(...))) {} */
+      *out = repo;
+      retcode = 0;
+    }
+  }
+
+  return retcode;
+}
+
+
+int git_clone_bare(git_repository **out, const char *origin_url, const char *dest_path)
+{
+  int retcode = GIT_ERROR;
+  git_repository *repo = NULL;
+  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;
+  }
+
+  if (!(retcode = git_repository_init(&repo, fullpath, 1))) {
+    if ((retcode = setup_remotes_and_fetch(repo, origin_url)) < 0) {
+      /* Failed to fetch; clean up */
+      git_repository_free(repo);
+      git_futils_rmdir_r(fullpath, GIT_DIRREMOVAL_FILES_AND_DIRS);
+    } else {
+      /* Fetched successfully, do a checkout */
+      /* if (!(retcode = git_checkout(...))) {} */
+      *out = repo;
+      retcode = 0;
+    }
+  }
+
+  return retcode;
+}
+
+
+
+GIT_END_DECL