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/* $Id: gucharmap-codepoint-list.c,v 1.6 2005/09/08 13:35:59 behdad Exp $ */
/*
* Copyright (c) 2004 Noah Levitt
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <glib.h>
#include "gucharmap-codepoint-list.h"
typedef struct _DefaultCodepointListPrivate DefaultCodepointListPrivate;
struct _DefaultCodepointListPrivate
{
gunichar start;
gunichar end;
};
#define GUCHARMAP_CODEPOINT_LIST_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), gucharmap_codepoint_list_get_type (), DefaultCodepointListPrivate))
static gunichar
default_get_char (GucharmapCodepointList *list,
gint index)
{
DefaultCodepointListPrivate *priv = GUCHARMAP_CODEPOINT_LIST_GET_PRIVATE (list);
if (index > (gint)priv->end - priv->start)
return (gunichar)(-1);
else
return (gunichar) priv->start + index;
}
static gint
default_get_index (GucharmapCodepointList *list,
gunichar wc)
{
DefaultCodepointListPrivate *priv = GUCHARMAP_CODEPOINT_LIST_GET_PRIVATE (list);
if (wc < priv->start || wc > priv->end)
return -1;
else
return wc - priv->start;
}
static gint
default_get_last_index (GucharmapCodepointList *list)
{
DefaultCodepointListPrivate *priv = GUCHARMAP_CODEPOINT_LIST_GET_PRIVATE (list);
return priv->end - priv->start;
}
static void
gucharmap_codepoint_list_class_init (GucharmapCodepointListClass *clazz)
{
g_type_class_add_private (clazz, sizeof (DefaultCodepointListPrivate));
/* the default implementation is all unicode codepoints in order */
clazz->get_char = default_get_char;
clazz->get_index = default_get_index;
clazz->get_last_index = default_get_last_index;
}
GType
gucharmap_codepoint_list_get_type (void)
{
static GType t = 0;
if (t == 0)
{
static const GTypeInfo type_info =
{
sizeof (GucharmapCodepointListClass),
NULL,
NULL,
(GClassInitFunc) gucharmap_codepoint_list_class_init,
NULL,
NULL,
sizeof (GucharmapCodepointList),
0,
NULL
};
t = g_type_register_static (G_TYPE_OBJECT, "GucharmapCodepointList", &type_info, 0);
}
return t;
}
/**
* gucharmap_codepoint_list_get_char:
* @list: a #GucharmapCodepointList
* @index: index indicating which character to get
*
* Return value: code point at index @index in the codepoint list, or
* (gunichar)(-1) if @index is beyond the last index.
**/
gunichar
gucharmap_codepoint_list_get_char (GucharmapCodepointList *list,
gint index)
{
g_return_val_if_fail (IS_GUCHARMAP_CODEPOINT_LIST (list), (gunichar)(-1));
return GUCHARMAP_CODEPOINT_LIST_GET_CLASS (list)->get_char (list, index);
}
/**
* gucharmap_codepoint_list_get_index:
* @list: a #GucharmapCodepointList
* @wc: character for which to find the index
*
* Return value: index of @wc, or -1 if @wc is not in this
* codepoint list.
**/
gint
gucharmap_codepoint_list_get_index (GucharmapCodepointList *list,
gunichar wc)
{
g_return_val_if_fail (IS_GUCHARMAP_CODEPOINT_LIST (list), -1);
return GUCHARMAP_CODEPOINT_LIST_GET_CLASS (list)->get_index (list, wc);
}
/**
* gucharmap_codepoint_list_get_last_index:
* @list: a #GucharmapCodepointList
*
* Return value: last index in this codepoint list.
**/
gint
gucharmap_codepoint_list_get_last_index (GucharmapCodepointList *list)
{
g_return_val_if_fail (IS_GUCHARMAP_CODEPOINT_LIST (list), -1);
return GUCHARMAP_CODEPOINT_LIST_GET_CLASS (list)->get_last_index (list);
}
/**
* gucharmap_codepoint_list_new:
*
* Creates a new codepoint list.
*
* Return value: the newly-created #GucharmapCodepointList. Use
* g_object_unref() to free the result.
**/
GucharmapCodepointList *
gucharmap_codepoint_list_new (gunichar start,
gunichar end)
{
GucharmapCodepointList *list;
DefaultCodepointListPrivate *priv;
list = GUCHARMAP_CODEPOINT_LIST (g_object_new (gucharmap_codepoint_list_get_type (), NULL));
priv = GUCHARMAP_CODEPOINT_LIST_GET_PRIVATE (list);
/* XXX: what to do if start > end, etc */
priv->start = start;
if (end <= UNICHAR_MAX)
priv->end = end;
else
priv->end = UNICHAR_MAX;
return list;
}
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