Added new files resulting from directory restructuring.

[pspp-builds.git] / src / language / control / temporary.c

diff --git a/src/language/control/temporary.c b/src/language/control/temporary.c
new file mode 100644 (file)
index 0000000..e5b8ae4
--- /dev/null
+++ b/src/language/control/temporary.c
@@ -0,0 +1,83 @@
+/* PSPP - computes sample statistics.
+   Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+   Written by Ben Pfaff <blp@gnu.org>.
+
+   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 "message.h"
+#include <stddef.h>
+#include <stdlib.h>
+#include "alloc.h"
+#include "command.h"
+#include "dictionary.h"
+#include "control-stack.h"
+#include "message.h"
+#include "hash.h"
+#include "lexer.h"
+#include "str.h"
+#include "value-labels.h"
+#include "variable.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+int temporary;
+struct dictionary *temp_dict;
+size_t temp_trns;
+
+/* Parses the TEMPORARY command. */
+int
+cmd_temporary (void)
+{
+  /* TEMPORARY is not allowed inside DO IF or LOOP. */
+  if (!ctl_stack_is_empty ())
+    {
+      msg (SE, _("This command is not valid inside DO IF or LOOP."));
+      return CMD_FAILURE;
+    }
+
+  /* TEMPORARY can only appear once! */
+  if (temporary)
+    {
+      msg (SE, _("This command may only appear once between "
+          "procedures and procedure-like commands."));
+      return CMD_FAILURE;
+    }
+
+  /* Make a copy of the current dictionary. */
+  temporary = 1;
+  temp_dict = dict_clone (default_dict);
+  temp_trns = n_trns;
+
+  return lex_end_of_command ();
+}
+
+/* Cancels the temporary transformation, if any. */
+void
+cancel_temporary (void)
+{
+  if (temporary)
+    {
+      if (temp_dict) 
+        {
+          dict_destroy (temp_dict);
+          temp_dict = NULL; 
+        }
+      temporary = 0;
+      temp_trns = 0;
+    }
+}