Added new files resulting from directory restructuring.

[pspp] / src / language / stats / sort-cases.c

diff --git a/src/language/stats/sort-cases.c b/src/language/stats/sort-cases.c
new file mode 100644 (file)
index 0000000..ed442f7
--- /dev/null
+++ b/src/language/stats/sort-cases.c
@@ -0,0 +1,78 @@
+/* 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 <sys/types.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <limits.h>
+#include "alloc.h"
+#include "command.h"
+#include "message.h"
+#include "lexer.h"
+#include "settings.h"
+#include "sort-criteria.h"
+#include "sort.h"
+#include "variable.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+
+/* Performs the SORT CASES procedures. */
+int
+cmd_sort_cases (void)
+{
+  struct sort_criteria *criteria;
+  bool success = false;
+
+  lex_match (T_BY);
+
+  criteria = sort_parse_criteria (default_dict, NULL, NULL, NULL, NULL);
+  if (criteria == NULL)
+    return CMD_CASCADING_FAILURE;
+
+  if (get_testing_mode () && lex_match ('/')) 
+    {
+      if (!lex_force_match_id ("BUFFERS") || !lex_match ('=')
+          || !lex_force_int ())
+        goto done;
+
+      min_buffers = max_buffers = lex_integer ();
+      allow_internal_sort = false;
+      if (max_buffers < 2) 
+        {
+          msg (SE, _("Buffer limit must be at least 2."));
+          goto done;
+        }
+
+      lex_get ();
+    }
+
+  success = sort_active_file_in_place (criteria);
+
+ done:
+  min_buffers = 64;
+  max_buffers = INT_MAX;
+  allow_internal_sort = true;
+  
+  sort_destroy_criteria (criteria);
+  return success ? lex_end_of_command () : CMD_CASCADING_FAILURE;
+}
+