gboolean
ostree_builtin_checkout (int argc, char **argv, GCancellable *cancellable, GError **error)
{
GOptionContext *context;
glnx_unref_object OstreeRepo *repo = NULL;
gboolean ret = FALSE;
const char *commit;
const char *destination;
g_autofree char *resolved_commit = NULL;
context = g_option_context_new ("COMMIT [DESTINATION] - Check out a commit into a filesystem tree");
if (!ostree_option_context_parse (context, options, &argc, &argv, OSTREE_BUILTIN_FLAG_NONE, &repo, cancellable, error))
goto out;
if (opt_disable_fsync)
ostree_repo_set_disable_fsync (repo, TRUE);
if (argc < 2)
{
gchar *help = g_option_context_get_help (context, TRUE, NULL);
g_printerr ("%s\n", help);
g_free (help);
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"COMMIT must be specified");
goto out;
}
if (opt_from_stdin || opt_from_file)
{
destination = argv[1];
if (!process_many_checkouts (repo, destination, cancellable, error))
goto out;
}
else
{
commit = argv[1];
if (argc < 3)
destination = commit;
else
destination = argv[2];
if (!ostree_repo_resolve_rev (repo, commit, FALSE, &resolved_commit, error))
goto out;
if (!process_one_checkout (repo, resolved_commit, opt_subpath,
destination,
cancellable, error))
goto out;
}
ret = TRUE;
out:
if (context)
g_option_context_free (context);
return ret;
}
static gboolean
process_many_checkouts (OstreeRepo *repo,
GFile *target,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gsize len;
GError *temp_error = NULL;
gs_unref_object GInputStream *instream = NULL;
gs_unref_object GDataInputStream *datastream = NULL;
gs_free char *revision = NULL;
gs_free char *subpath = NULL;
gs_free char *resolved_commit = NULL;
if (opt_from_stdin)
{
instream = (GInputStream*)g_unix_input_stream_new (0, FALSE);
}
else
{
gs_unref_object GFile *f = g_file_new_for_path (opt_from_file);
instream = (GInputStream*)g_file_read (f, cancellable, error);
if (!instream)
goto out;
}
datastream = g_data_input_stream_new (instream);
while ((revision = g_data_input_stream_read_upto (datastream, "", 1, &len,
cancellable, &temp_error)) != NULL)
{
if (revision[0] == '\0')
break;
/* Read the null byte */
(void) g_data_input_stream_read_byte (datastream, cancellable, NULL);
g_free (subpath);
subpath = g_data_input_stream_read_upto (datastream, "", 1, &len,
cancellable, &temp_error);
if (temp_error)
{
g_propagate_error (error, temp_error);
goto out;
}
/* Read the null byte */
(void) g_data_input_stream_read_byte (datastream, cancellable, NULL);
if (!ostree_repo_resolve_rev (repo, revision, FALSE, &resolved_commit, error))
goto out;
if (!process_one_checkout (repo, resolved_commit, subpath, target,
cancellable, error))
{
g_prefix_error (error, "Processing tree %s: ", resolved_commit);
goto out;
}
g_free (revision);
}
if (temp_error)
{
g_propagate_error (error, temp_error);
goto out;
}
ret = TRUE;
out:
return ret;
}
