Implemented the CD command.

[pspp-builds.git] / src / language / utilities / cd.c

diff --git a/src/language/utilities/cd.c b/src/language/utilities/cd.c
new file mode 100644 (file)
index 0000000..c58492f
--- /dev/null
+++ b/src/language/utilities/cd.c
@@ -0,0 +1,58 @@
+/* PSPP - computes sample statistics.
+   Copyright (C) 2007 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA. */
+
+#include <config.h>
+#include <language/command.h>
+#include <libpspp/message.h>
+#include <errno.h>
+#include <language/lexer/lexer.h>
+#include <unistd.h>
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+/* Parses the CD command. */
+int
+cmd_cd (struct lexer *lexer, struct dataset *ds UNUSED)
+{
+  char  *path = 0;
+
+  if ( ! lex_force_string (lexer))
+    goto error;
+
+  path = ds_xstrdup (lex_tokstr (lexer));
+
+  if ( -1 == chdir (path) )
+    {
+      int err = errno;
+      msg (SE, _("Cannot change directory to %s:  %s "), path,
+          strerror (errno));
+      goto error;
+    }
+
+  free (path);
+
+  return CMD_SUCCESS;
+
+ error:
+
+  free(path);
+
+  return CMD_FAILURE;
+}
+