Added the Compute dialog box.

[pspp-builds.git] / src / ui / gui / helper.c

diff --git a/src/ui/gui/helper.c b/src/ui/gui/helper.c
index 4d88c81bde63bb98db897631738e1100ee2e0734..69b5d4376cb6198248c42b34c82d9496a19230c9 100644 (file)
--- a/src/ui/gui/helper.c
+++ b/src/ui/gui/helper.c
@@ -1,3 +1,23 @@
+/*
+    PSPPIRE --- A Graphical User Interface for PSPP
+    Copyright (C) 2007  Free Software Foundation
+
+    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. */
+
+
 /* This file is a rubbish bin where stuff gets put when it doesn't seem to
    belong anywhere else.
 */
@@ -9,6 +29,7 @@
 #include <data/data-in.h>
 #include <data/data-out.h>
 #include <data/dictionary.h>
+#include <data/storage-stream.h>
 #include <libpspp/message.h>
 
 #include <libpspp/i18n.h>
@@ -20,6 +41,7 @@
 #include <language/command.h>
 #include <data/procedure.h>
 #include <language/lexer/lexer.h>
+#include "psppire-data-store.h"
 
 
 #include <gettext.h>
@@ -88,8 +110,9 @@ get_widget_assert (GladeXML *xml, const gchar *name)
   return w;
 }
 
-/* Converts a string in the pspp locale to utf-8 */
-char *
+/* Converts a string in the pspp locale to utf-8.
+   The return value must be freed when no longer required*/
+gchar *
 pspp_locale_to_utf8 (const gchar *text, gssize len, GError **err)
 {
   return recode_string (CONV_PSPP_TO_UTF8, text, len);
@@ -141,12 +164,14 @@ reference_manual (GtkMenuItem *menu, gpointer data)
 
 extern struct dataset *the_dataset;
 extern struct source_stream *the_source_stream;
+extern PsppireDataStore *the_data_store;
 
-void
+gboolean
 execute_syntax (struct getl_interface *sss)
 {
   struct lexer *lexer;
-  g_return_if_fail (proc_has_source (the_dataset));
+
+  g_return_val_if_fail (proc_has_source (the_dataset), FALSE);
 
   lexer = lex_create (the_source_stream);
 
@@ -154,11 +179,7 @@ execute_syntax (struct getl_interface *sss)
 
   for (;;)
     {
-      const struct dictionary *dict = dataset_dict (the_dataset);
-
-      int result = cmd_parse (lexer, the_dataset,
-                             dict_get_var_cnt (dict) > 0 ?
-                             CMD_STATE_DATA : CMD_STATE_INITIAL);
+      int result = cmd_parse (lexer, the_dataset);
 
       if (result == CMD_EOF || result == CMD_FINISH)
        break;
@@ -167,6 +188,19 @@ execute_syntax (struct getl_interface *sss)
   getl_abort_noninteractive (the_source_stream);
 
   lex_destroy (lexer);
+
+  /* The GUI must *always* have a data source, even if it's an empty one.
+     Therefore, we find that there is none, (for example NEW FILE was the last
+     item in the syntax) then we create a new one. */
+  if ( ! proc_has_source (the_dataset))
+    proc_set_source (the_dataset,
+                    storage_source_create (the_data_store->case_file->flexifile)
+                    );
+
+  /* GUI syntax needs this implicit EXECUTE command at the end of
+     every script.  Otherwise commands like GET could leave the GUI without
+     a casefile. */
+  return procedure (the_dataset, NULL, NULL);
 }