* get.c (parse_read_command): Compact the values in the target

[pspp] / src / data / case-map.h

diff --git a/src/data/case-map.h b/src/data/case-map.h
new file mode 100644 (file)
index 0000000..86d448e
--- /dev/null
+++ b/src/data/case-map.h
@@ -0,0 +1,56 @@
+/* PSPP - a program for statistical analysis.
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Case map.
+
+   A case map copies data from a case that corresponds to one
+   dictionary to a case that corresponds to a second dictionary.
+   A few options are available for ways to create the mapping. */
+
+#ifndef DATA_CASE_MAP_H
+#define DATA_CASE_MAP_H 1
+
+#include <stddef.h>
+
+struct case_map;
+struct dictionary;
+struct ccase;
+
+struct case_map *case_map_create (void);
+void case_map_destroy (struct case_map *);
+void case_map_execute (const struct case_map *,
+                       const struct ccase *, struct ccase *);
+
+size_t case_map_get_value_cnt (const struct case_map *);
+
+/* For mapping cases for one version of a dictionary to those in
+   a modified version of the same dictionary. */
+void case_map_prepare_dict (const struct dictionary *);
+struct case_map *case_map_from_dict (const struct dictionary *);
+
+/* For eliminating "holes" in a case. */
+struct case_map *case_map_to_compact_dict (const struct dictionary *d,
+                                           unsigned int exclude_classes);
+
+/* For mapping cases for one dictionary to another based on
+   variable names within the dictionary. */
+struct case_map *case_map_by_name (const struct dictionary *old,
+                                   const struct dictionary *new);
+
+void case_map_dump (const struct case_map *);
+
+#endif /* data/case-map.h */