/* PSPP - a program for statistical analysis.
- Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2009, 2011 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
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
-#include <data/val-type.h>
-#include <data/casereader.h>
+
#include <stdlib.h>
-#include <data/variable.h>
-#include <data/casereader-provider.h>
-#include <libpspp/taint.h>
+#include "data/casereader-provider.h"
+#include "data/casereader.h"
+#include "data/val-type.h"
+#include "data/variable.h"
+#include "libpspp/taint.h"
-#include "xalloc.h"
+#include "gl/xalloc.h"
/* Casereader that applies a user-supplied function to translate
each case into another in an arbitrary fashion. */
If DISTINCT_CALLBACK is non-null, then it will be called exactly
once for every case containing a distinct value of V. AUX is
- an auxilliary pointer passed to DISTINCT_CALLBACK.
+ an auxiliary pointer passed to DISTINCT_CALLBACK.
After this function is called, SUBREADER must not ever again
be referenced directly. It will be destroyed automatically
const union value *current_value = case_data (c, cdr->key);
const int key_width = var_get_width (cdr->key);
const double weight = cdr->weight ? case_data (c, cdr->weight)->f : 1.0;
- const struct ccase *next_case = casereader_peek (cdr->clone, cdr->n + 1);
+ struct ccase *next_case = casereader_peek (cdr->clone, cdr->n + 1);
int dir = 0;
cdr->n ++;
if ( NULL == next_case)
goto end;
-
+
dir = value_compare_3way (case_data (next_case, cdr->key),
current_value, key_width);
+ case_unref (next_case);
if ( dir != 0 )
{
/* Insist that the data are sorted */
cdr->direction = dir;
goto end;
}
-
+
return false;
end:
else
{
c = case_unshare_and_resize (input, cdr->proto);
- case_data_rw_idx (c, caseproto_get_n_widths (cdr->proto) - 1)->f = cdr->prev_cc;
+ case_data_rw_idx (c, caseproto_get_n_widths (cdr->proto) - 1)->f = cdr->prev_cc;
}
return c;
-/* Returns a new casereader which is based upon INPUT, but which contains a maximum
+/* Returns a new casereader which is based upon INPUT, but which contains a maximum
of one case for each distinct value of KEY.
If WEIGHT is non-null, then the new casereader's values for this variable
will be the sum of all values matching KEY.