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/*
*
* 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.
*
* 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 Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*
* Authors:
* Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include "e-mail-stripsig-filter.h"
G_DEFINE_TYPE (EMailStripSigFilter, e_mail_stripsig_filter, CAMEL_TYPE_MIME_FILTER)
static void
strip_signature (CamelMimeFilter *filter,
const gchar *in,
gsize len,
gsize prespace,
gchar **out,
gsize *outlen,
gsize *outprespace,
gint flush)
{
EMailStripSigFilter *stripsig = (EMailStripSigFilter *) filter;
register const gchar *inptr = in;
const gchar *inend = in + len;
const gchar *start = NULL;
if (stripsig->midline) {
while (inptr < inend && *inptr != '\n')
inptr++;
if (inptr < inend) {
stripsig->midline = FALSE;
inptr++;
}
}
while (inptr < inend) {
if ((inend - inptr) >= 4 && !strncmp (inptr, "-- \n", 4)) {
start = inptr;
inptr += 4;
} else if (!stripsig->text_plain_only &&
(inend - inptr) >= 7 &&
!g_ascii_strncasecmp (inptr, "-- <BR>", 7)) {
start = inptr;
inptr += 7;
} else {
while (inptr < inend && *inptr != '\n')
inptr++;
if (inptr == inend) {
stripsig->midline = TRUE;
break;
}
inptr++;
}
}
if (start != NULL) {
inptr = start;
stripsig->midline = FALSE;
}
if (!flush && inend > inptr)
camel_mime_filter_backup (filter, inptr, inend - inptr);
else if (!start)
inptr = inend;
*out = (gchar *)in;
*outlen = inptr - in;
*outprespace = prespace;
}
static void
filter_filter (CamelMimeFilter *filter,
const gchar *in,
gsize len,
gsize prespace,
gchar **out,
gsize *outlen,
gsize *outprespace)
{
strip_signature (
filter, in, len, prespace, out, outlen, outprespace, FALSE);
}
static void
filter_complete (CamelMimeFilter *filter,
const gchar *in,
gsize len,
gsize prespace,
gchar **out,
gsize *outlen,
gsize *outprespace)
{
strip_signature (
filter, in, len, prespace, out, outlen, outprespace, TRUE);
}
/* should this 'flush' outstanding state/data bytes? */
static void
filter_reset (CamelMimeFilter *filter)
{
EMailStripSigFilter *stripsig = (EMailStripSigFilter *) filter;
stripsig->midline = FALSE;
}
static void
e_mail_stripsig_filter_class_init (EMailStripSigFilterClass *class)
{
CamelMimeFilterClass *mime_filter_class;
mime_filter_class = CAMEL_MIME_FILTER_CLASS (class);
mime_filter_class->filter = filter_filter;
mime_filter_class->complete = filter_complete;
mime_filter_class->reset = filter_reset;
}
static void
e_mail_stripsig_filter_init (EMailStripSigFilter *filter)
{
}
/**
* e_mail_stripsig_filter_new:
* @text_plain_only: Whether should look for a text/plain signature
* delimiter "-- \n" only or also an HTML signature delimiter "-- <BR>".
*
* Creates a new stripsig filter.
*
* Returns a new stripsig filter.
**/
CamelMimeFilter *
e_mail_stripsig_filter_new (gboolean text_plain_only)
{
EMailStripSigFilter *filter = g_object_new (E_TYPE_MAIL_STRIPSIG_FILTER, NULL);
filter->text_plain_only = text_plain_only;
return CAMEL_MIME_FILTER (filter);
}
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