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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
* 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.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include "camel-charset-map.h"
#include "camel-mime-filter-windows.h"
#define CAMEL_MIME_FILTER_WINDOWS_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), CAMEL_TYPE_MIME_FILTER_WINDOWS, CamelMimeFilterWindowsPrivate))
#define d(x)
#define w(x)
struct _CamelMimeFilterWindowsPrivate {
gboolean is_windows;
gchar *claimed_charset;
};
G_DEFINE_TYPE (CamelMimeFilterWindows, camel_mime_filter_windows, CAMEL_TYPE_MIME_FILTER)
static void
mime_filter_windows_finalize (GObject *object)
{
CamelMimeFilterWindowsPrivate *priv;
priv = CAMEL_MIME_FILTER_WINDOWS_GET_PRIVATE (object);
g_free (priv->claimed_charset);
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (camel_mime_filter_windows_parent_class)->finalize (object);
}
static void
mime_filter_windows_filter (CamelMimeFilter *mime_filter,
const gchar *in,
gsize len,
gsize prespace,
gchar **out,
gsize *outlen,
gsize *outprespace)
{
CamelMimeFilterWindowsPrivate *priv;
register guchar *inptr;
guchar *inend;
priv = CAMEL_MIME_FILTER_WINDOWS_GET_PRIVATE (mime_filter);
if (!priv->is_windows) {
inptr = (guchar *) in;
inend = inptr + len;
while (inptr < inend) {
register guchar c = *inptr++;
if (c >= 128 && c <= 159) {
w (g_warning (
"Encountered Windows "
"charset masquerading as %s",
priv->claimed_charset));
priv->is_windows = TRUE;
break;
}
}
}
*out = (gchar *) in;
*outlen = len;
*outprespace = prespace;
}
static void
mime_filter_windows_complete (CamelMimeFilter *mime_filter,
const gchar *in,
gsize len,
gsize prespace,
gchar **out,
gsize *outlen,
gsize *outprespace)
{
mime_filter_windows_filter (
mime_filter, in, len, prespace,
out, outlen, outprespace);
}
static void
mime_filter_windows_reset (CamelMimeFilter *mime_filter)
{
CamelMimeFilterWindowsPrivate *priv;
priv = CAMEL_MIME_FILTER_WINDOWS_GET_PRIVATE (mime_filter);
priv->is_windows = FALSE;
}
static void
camel_mime_filter_windows_class_init (CamelMimeFilterWindowsClass *class)
{
GObjectClass *object_class;
CamelMimeFilterClass *mime_filter_class;
g_type_class_add_private (class, sizeof (CamelMimeFilterWindowsPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->finalize = mime_filter_windows_finalize;
mime_filter_class = CAMEL_MIME_FILTER_CLASS (class);
mime_filter_class->filter = mime_filter_windows_filter;
mime_filter_class->complete = mime_filter_windows_complete;
mime_filter_class->reset = mime_filter_windows_reset;
}
static void
camel_mime_filter_windows_init (CamelMimeFilterWindows *filter)
{
filter->priv = CAMEL_MIME_FILTER_WINDOWS_GET_PRIVATE (filter);
}
/**
* camel_mime_filter_windows_new:
* @claimed_charset: ISO charset name
*
* Create a new #CamelMimeFilterWindows object that will analyse
* whether or not the text is really encoded in @claimed_charset.
*
* Returns: a new #CamelMimeFilter object
**/
CamelMimeFilter *
camel_mime_filter_windows_new (const gchar *claimed_charset)
{
CamelMimeFilter *filter;
CamelMimeFilterWindowsPrivate *priv;
g_return_val_if_fail (claimed_charset != NULL, NULL);
filter = g_object_new (CAMEL_TYPE_MIME_FILTER_WINDOWS, NULL);
priv = CAMEL_MIME_FILTER_WINDOWS_GET_PRIVATE (filter);
priv->claimed_charset = g_strdup (claimed_charset);
return filter;
}
/**
* camel_mime_filter_windows_is_windows_charset:
* @filter: a #CamelMimeFilterWindows object
*
* Get whether or not the textual content filtered by @filter is
* really in a Microsoft Windows charset rather than the claimed ISO
* charset.
*
* Returns: %TRUE if the text was found to be in a Microsoft Windows
* CP125x charset or %FALSE otherwise.
**/
gboolean
camel_mime_filter_windows_is_windows_charset (CamelMimeFilterWindows *filter)
{
g_return_val_if_fail (CAMEL_IS_MIME_FILTER_WINDOWS (filter), FALSE);
return filter->priv->is_windows;
}
/**
* camel_mime_filter_windows_real_charset:
* @filter: a #CamelMimeFilterWindows object
*
* Get the name of the actual charset used to encode the textual
* content filtered by @filter (it will either be the original
* claimed_charset passed in at creation time or the Windows-CP125x
* equivalent).
*
* Returns: the name of the actual charset
**/
const gchar *
camel_mime_filter_windows_real_charset (CamelMimeFilterWindows *filter)
{
const gchar *charset;
g_return_val_if_fail (CAMEL_IS_MIME_FILTER_WINDOWS (filter), NULL);
charset = filter->priv->claimed_charset;
if (filter->priv->is_windows)
charset = camel_charset_iso_to_windows (charset);
return charset;
}
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