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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright 2002 Ximian, Inc. (www.ximian.com)
*
* This program 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 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "camel-charset-map.h"
#include "camel-mime-filter-windows.h"
#define d(x)
#define w(x)
static void camel_mime_filter_windows_class_init (CamelMimeFilterWindowsClass *klass);
static void camel_mime_filter_windows_init (CamelObject *o);
static void camel_mime_filter_windows_finalize (CamelObject *o);
static CamelMimeFilterClass *parent_class = NULL;
CamelType
camel_mime_filter_windows_get_type (void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register (camel_mime_filter_get_type (),
"CamelMimeFilterWindows",
sizeof (CamelMimeFilterWindows),
sizeof (CamelMimeFilterWindowsClass),
(CamelObjectClassInitFunc) camel_mime_filter_windows_class_init,
NULL,
(CamelObjectInitFunc) camel_mime_filter_windows_init,
(CamelObjectFinalizeFunc) camel_mime_filter_windows_finalize);
}
return type;
}
static void
camel_mime_filter_windows_finalize (CamelObject *o)
{
CamelMimeFilterWindows *windows = (CamelMimeFilterWindows *) o;
g_free (windows->claimed_charset);
}
static void
camel_mime_filter_windows_init (CamelObject *o)
{
CamelMimeFilterWindows *windows = (CamelMimeFilterWindows *) o;
windows->is_windows = FALSE;
windows->claimed_charset = NULL;
}
static void
filter_filter (CamelMimeFilter *filter, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace)
{
CamelMimeFilterWindows *windows = (CamelMimeFilterWindows *) filter;
register unsigned char *inptr;
unsigned char *inend;
if (!windows->is_windows) {
inptr = (unsigned char *) in;
inend = inptr + len;
while (inptr < inend) {
register unsigned char c = *inptr++;
if (c >= 128 && c <= 159) {
w(g_warning ("Encountered Windows charset masquerading as %s",
windows->claimed_charset));
windows->is_windows = TRUE;
break;
}
}
}
*out = in;
*outlen = len;
*outprespace = prespace;
}
static void
filter_complete (CamelMimeFilter *filter, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace)
{
filter_filter (filter, in, len, prespace, out, outlen, outprespace);
}
static void
filter_reset (CamelMimeFilter *filter)
{
CamelMimeFilterWindows *windows = (CamelMimeFilterWindows *) filter;
windows->is_windows = FALSE;
}
static void
camel_mime_filter_windows_class_init (CamelMimeFilterWindowsClass *klass)
{
CamelMimeFilterClass *filter_class = (CamelMimeFilterClass *) klass;
parent_class = CAMEL_MIME_FILTER_CLASS (camel_type_get_global_classfuncs (camel_mime_filter_get_type ()));
filter_class->reset = filter_reset;
filter_class->filter = filter_filter;
filter_class->complete = filter_complete;
}
/**
* 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 char *claimed_charset)
{
CamelMimeFilterWindows *new;
g_return_val_if_fail (claimed_charset != NULL, NULL);
new = CAMEL_MIME_FILTER_WINDOWS (camel_object_new (camel_mime_filter_windows_get_type ()));
new->claimed_charset = g_strdup (claimed_charset);
return CAMEL_MIME_FILTER (new);
}
/**
* camel_mime_filter_windows_is_windows_charset:
* @filter: a #CamelMimeFilterWindows object
*
* Get whether or not the textual content filtered by @filetr 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->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 char *
camel_mime_filter_windows_real_charset (CamelMimeFilterWindows *filter)
{
g_return_val_if_fail (CAMEL_IS_MIME_FILTER_WINDOWS (filter), NULL);
if (filter->is_windows)
return camel_charset_iso_to_windows (filter->claimed_charset);
else
return filter->claimed_charset;
}
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