/* PSPP - a program for statistical analysis.
- Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2009, 2011, 2013 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/missing-values.h>
+
+#include "data/missing-values.h"
+
#include <assert.h>
#include <stdlib.h>
-#include <data/variable.h>
-#include <libpspp/assertion.h>
-#include <libpspp/str.h>
+
+#include "data/variable.h"
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "libpspp/i18n.h"
+#include "libpspp/str.h"
+
+#include "gl/minmax.h"
/* Types of user-missing values.
Invisible--use access functions defined below instead. */
int i;
for (i = MV_MAX_STRING; i < width; i++)
- if (value_str (value, width)[i] != ' ')
+ if (value->s[i] != ' ')
return false;
return true;
}
NOT_REACHED ();
}
-/* Attempts to add S to the set of string missing values MV. S
- must contain exactly as many characters as MV's width.
- Returns true if successful, false if MV has no more room for
+/* Attempts to add S, which is LEN bytes long, to the set of string missing
+ values MV. Returns true if successful, false if MV has no more room for
missing values or if S is not an acceptable missing value. */
bool
-mv_add_str (struct missing_values *mv, const uint8_t s[])
+mv_add_str (struct missing_values *mv, const uint8_t s[], size_t len)
{
union value v;
bool ok;
assert (mv->width > 0);
+ while (len > mv->width)
+ if (s[--len] != ' ')
+ return false;
+
value_init (&v, mv->width);
- memcpy (value_str_rw (&v, mv->width), s, mv->width);
+ buf_copy_rpad (CHAR_CAST (char *, v.s), mv->width,
+ CHAR_CAST (char *, s), len, ' ');
ok = mv_add_value (mv, &v);
value_destroy (&v, mv->width);
case MVT_NONE:
return false;
case MVT_1:
- return !memcmp (value_str (&v[0], mv->width), s, mv->width);
+ return !memcmp (v[0].s, s, mv->width);
case MVT_2:
- return (!memcmp (value_str (&v[0], mv->width), s, mv->width)
- || !memcmp (value_str (&v[1], mv->width), s, mv->width));
+ return (!memcmp (v[0].s, s, mv->width)
+ || !memcmp (v[1].s, s, mv->width));
case MVT_3:
- return (!memcmp (value_str (&v[0], mv->width), s, mv->width)
- || !memcmp (value_str (&v[1], mv->width), s, mv->width)
- || !memcmp (value_str (&v[2], mv->width), s, mv->width));
+ return (!memcmp (v[0].s, s, mv->width)
+ || !memcmp (v[1].s, s, mv->width)
+ || !memcmp (v[2].s, s, mv->width));
case MVT_RANGE:
case MVT_RANGE_1:
NOT_REACHED ();
NOT_REACHED ();
}
-/* Returns true if V is a missing value in the given CLASS in MV,
- false otherwise. */
-bool
-mv_is_value_missing (const struct missing_values *mv, const union value *v,
- enum mv_class class)
+/* Returns MV_USER if V is a user-missing value in MV, MV_SYSTEM if V is
+ system-missing (and MV is numeric), or 0 if V is not missing. */
+enum mv_class
+mv_is_value_missing (const struct missing_values *mv, const union value *v)
{
return (mv->width == 0
- ? mv_is_num_missing (mv, v->f, class)
- : mv_is_str_missing (mv, value_str (v, mv->width), class));
+ ? mv_is_num_missing (mv, v->f)
+ : mv_is_str_missing (mv, v->s));
}
-/* Returns true if D is a missing value in the given CLASS in MV,
- false otherwise.
- MV must be a set of numeric missing values. */
-bool
-mv_is_num_missing (const struct missing_values *mv, double d,
- enum mv_class class)
+/* Returns MV_USER if V is a user-missing value in MV, MV_SYSTEM if V is
+ system-missing, or 0 if V is not missing. MV must be a set of numeric
+ missing values. */
+enum mv_class
+mv_is_num_missing (const struct missing_values *mv, double d)
{
assert (mv->width == 0);
- return ((class & MV_SYSTEM && d == SYSMIS)
- || (class & MV_USER && is_num_user_missing (mv, d)));
+ return (d == SYSMIS ? MV_SYSTEM
+ : is_num_user_missing (mv, d) ? MV_USER
+ : 0);
}
-/* Returns true if S[] is a missing value in the given CLASS in
- MV, false otherwise.
- MV must be a set of string missing values.
- S[] must contain exactly as many characters as MV's width. */
-bool
-mv_is_str_missing (const struct missing_values *mv, const uint8_t s[],
- enum mv_class class)
+/* Returns MV_USER if S[] is a user-missing value in MV, or 0 if V is not
+ missing. MV must be a set of string missing values. S[] must contain
+ exactly as many characters as MV's width. */
+enum mv_class
+mv_is_str_missing (const struct missing_values *mv, const uint8_t s[])
{
assert (mv->width > 0);
- return class & MV_USER && is_str_user_missing (mv, s);
+ return is_str_user_missing (mv, s) ? MV_USER : 0;
+}
+
+/* Like mv_is_value_missing(), this tests whether V is a missing value in MV.
+ It supports the uncommon case where V and MV might have different widths:
+ the caller must specify VW, the width of V. MV and VW must be both numeric
+ or both string.
+
+ Comparison of strings of different width is done by conceptually extending
+ both strings to infinite width by appending spaces. */
+enum mv_class
+mv_is_value_missing_varwidth (const struct missing_values *mv,
+ const union value *v, int vw)
+{
+ int mvw = mv->width;
+ if (mvw == vw)
+ return mv_is_value_missing (mv, v);
+
+ /* Make sure they're both strings. */
+ assert (mvw && vw);
+ if (mv->type == MVT_NONE)
+ return false;
+
+ for (int i = 0; i < mv->type; i++)
+ if (!buf_compare_rpad (CHAR_CAST_BUG (const char *, mv->values[i].s), mvw,
+ CHAR_CAST_BUG (const char *, v->s), vw))
+ return MV_USER;
+ return 0;
+}
+
+char *
+mv_to_string (const struct missing_values *mv, const char *encoding)
+{
+ struct string s = DS_EMPTY_INITIALIZER;
+ if (mv_has_range (mv))
+ {
+ double x, y;
+ mv_get_range (mv, &x, &y);
+ if (x == LOWEST)
+ ds_put_format (&s, "LOWEST THRU %.*g", DBL_DIG + 1, y);
+ else if (y == HIGHEST)
+ ds_put_format (&s, "%.*g THRU HIGHEST", DBL_DIG + 1, x);
+ else
+ ds_put_format (&s, "%.*g THRU %.*g",
+ DBL_DIG + 1, x,
+ DBL_DIG + 1, y);
+ }
+ for (size_t j = 0; j < mv_n_values (mv); j++)
+ {
+ const union value *value = mv_get_value (mv, j);
+ if (!ds_is_empty (&s))
+ ds_put_cstr (&s, "; ");
+ if (!mv->width)
+ ds_put_format (&s, "%.*g", DBL_DIG + 1, value->f);
+ else
+ {
+ char *mvs = recode_string (
+ "UTF-8", encoding, CHAR_CAST (char *, value->s),
+ MIN (mv->width, MV_MAX_STRING));
+ ds_put_format (&s, "\"%s\"", mvs);
+ free (mvs);
+ }
+ }
+ return ds_is_empty (&s) ? NULL : ds_steal_cstr (&s);
}
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