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., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#if !sort_h
#define sort_h 1
-#include "vfm.h"
+#include <stddef.h>
+#include <stdbool.h>
+
+struct casereader;
+struct dictionary;
+struct variable;
+
/* Sort direction. */
enum sort_direction
SRT_DESCEND /* Z, Y, X, ..., C, B, A. */
};
-/* SORT CASES input program. */
-struct sort_cases_pgm
+/* A sort criterion. */
+struct sort_criterion
{
- int ref_cnt; /* Reference count. */
-
- struct variable **vars; /* Variables to sort. */
- enum sort_direction *dirs; /* Sort directions. */
- int var_cnt; /* Number of variables to sort. */
-
- struct internal_sort *isrt; /* Internal sort output. */
- struct external_sort *xsrt; /* External sort output. */
- size_t case_size; /* Number of bytes in case. */
+ int fv; /* Variable data index. */
+ int width; /* 0=numeric, otherwise string width. */
+ enum sort_direction dir; /* Sort direction. */
};
-/* SORT CASES programmatic interface. */
+/* A set of sort criteria. */
+struct sort_criteria
+ {
+ struct sort_criterion *crits;
+ size_t crit_cnt;
+ };
+
+
+void sort_destroy_criteria (struct sort_criteria *);
+
+struct casefile *sort_execute (struct casereader *,
+ const struct sort_criteria *);
-typedef int read_sort_output_func (const struct ccase *, void *aux);
+int sort_active_file_in_place (const struct sort_criteria *);
-struct sort_cases_pgm *parse_sort (void);
-int sort_cases (struct sort_cases_pgm *, int separate);
-void read_sort_output (struct sort_cases_pgm *,
- read_sort_output_func, void *aux);
-void destroy_sort_cases_pgm (struct sort_cases_pgm *);
+struct casefile *sort_active_file_to_casefile (const struct sort_criteria *);
#endif /* !sort_h */