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/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 2001 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* MT safe
*/
#include "gvaluearray.h"
#include <string.h>
#include <stdlib.h> /* qsort() */
#ifdef DISABLE_MEM_POOLS
# define GROUP_N_VALUES (1) /* power of 2 !! */
#else
# define GROUP_N_VALUES (8) /* power of 2 !! */
#endif
/* --- functions --- */
GValue*
g_value_array_get_nth (GValueArray *value_array,
guint index)
{
g_return_val_if_fail (value_array != NULL, NULL);
g_return_val_if_fail (index < value_array->n_values, NULL);
return value_array->values + index;
}
static inline void
value_array_grow (GValueArray *value_array,
guint n_values,
gboolean zero_init)
{
g_return_if_fail (n_values >= value_array->n_values);
value_array->n_values = n_values;
if (value_array->n_values > value_array->n_prealloced)
{
guint i = value_array->n_prealloced;
value_array->n_prealloced = (value_array->n_values + GROUP_N_VALUES - 1) & ~(GROUP_N_VALUES - 1);
value_array->values = g_renew (GValue, value_array->values, value_array->n_prealloced);
if (!zero_init)
i = value_array->n_values;
memset (value_array->values + i, 0,
(value_array->n_prealloced - i) * sizeof (value_array->values[0]));
}
}
static inline void
value_array_shrink (GValueArray *value_array)
{
#ifdef DISABLE_MEM_POOLS
if (value_array->n_prealloced >= value_array->n_values + GROUP_N_VALUES)
{
value_array->n_prealloced = (value_array->n_values + GROUP_N_VALUES - 1) & ~(GROUP_N_VALUES - 1);
value_array->values = g_renew (GValue, value_array->values, value_array->n_prealloced);
}
#endif
}
GValueArray*
g_value_array_new (guint n_prealloced)
{
GValueArray *value_array = g_new (GValueArray, 1);
value_array->n_values = 0;
value_array->n_prealloced = 0;
value_array->values = NULL;
value_array_grow (value_array, n_prealloced, TRUE);
value_array->n_values = 0;
return value_array;
}
void
g_value_array_free (GValueArray *value_array)
{
guint i;
g_return_if_fail (value_array != NULL);
for (i = 0; i < value_array->n_values; i++)
{
GValue *value = value_array->values + i;
if (G_VALUE_TYPE (value) != 0) /* we allow unset values in the array */
g_value_unset (value);
}
g_free (value_array->values);
g_free (value_array);
}
GValueArray*
g_value_array_copy (const GValueArray *value_array)
{
GValueArray *new_array;
guint i;
g_return_val_if_fail (value_array != NULL, NULL);
new_array = g_new (GValueArray, 1);
new_array->n_values = 0;
new_array->values = NULL;
new_array->n_prealloced = 0;
value_array_grow (new_array, value_array->n_values, TRUE);
for (i = 0; i < new_array->n_values; i++)
if (G_VALUE_TYPE (value_array->values + i) != 0)
{
GValue *value = new_array->values + i;
g_value_init (value, G_VALUE_TYPE (value_array->values + i));
g_value_copy (value_array->values + i, value);
}
return new_array;
}
GValueArray*
g_value_array_prepend (GValueArray *value_array,
const GValue *value)
{
g_return_val_if_fail (value_array != NULL, NULL);
return g_value_array_insert (value_array, 0, value);
}
GValueArray*
g_value_array_append (GValueArray *value_array,
const GValue *value)
{
g_return_val_if_fail (value_array != NULL, NULL);
return g_value_array_insert (value_array, value_array->n_values, value);
}
GValueArray*
g_value_array_insert (GValueArray *value_array,
guint index,
const GValue *value)
{
guint i;
g_return_val_if_fail (value_array != NULL, NULL);
g_return_val_if_fail (index <= value_array->n_values, value_array);
/* we support NULL for "value" as a shortcut for an unset value */
i = value_array->n_values;
value_array_grow (value_array, value_array->n_values + 1, FALSE);
if (index + 1 < value_array->n_values)
g_memmove (value_array->values + index + 1, value_array->values + index,
(i - index) * sizeof (value_array->values[0]));
memset (value_array->values + index, 0, sizeof (value_array->values[0]));
if (value)
{
g_value_init (value_array->values + index, G_VALUE_TYPE (value));
g_value_copy (value, value_array->values + index);
}
return value_array;
}
GValueArray*
g_value_array_remove (GValueArray *value_array,
guint index)
{
g_return_val_if_fail (value_array != NULL, NULL);
g_return_val_if_fail (index < value_array->n_values, value_array);
if (G_VALUE_TYPE (value_array->values + index) != 0)
g_value_unset (value_array->values + index);
value_array->n_values--;
if (index < value_array->n_values)
g_memmove (value_array->values + index, value_array->values + index + 1,
(value_array->n_values - index) * sizeof (value_array->values[0]));
value_array_shrink (value_array);
if (value_array->n_prealloced > value_array->n_values)
memset (value_array->values + value_array->n_values, 0, sizeof (value_array->values[0]));
return value_array;
}
GValueArray*
g_value_array_sort (GValueArray *value_array,
GCompareFunc compare_func)
{
g_return_val_if_fail (compare_func != NULL, NULL);
if (value_array->n_values)
qsort (value_array->values,
value_array->n_values,
sizeof (value_array->values[0]),
compare_func);
return value_array;
}
GValueArray*
g_value_array_sort_with_data (GValueArray *value_array,
GCompareDataFunc compare_func,
gpointer user_data)
{
g_return_val_if_fail (value_array != NULL, NULL);
g_return_val_if_fail (compare_func != NULL, NULL);
if (value_array->n_values)
g_qsort_with_data (value_array->values,
value_array->n_values,
sizeof (value_array->values[0]),
compare_func, user_data);
return value_array;
}
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