/*
*
* 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) version 3.
*
* 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 the program; if not, see
*
*
* Authors:
* Jeffrey Stedfast
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include
#endif
#include
#include
#include "em-stripsig-filter.h"
G_DEFINE_TYPE (EMStripSigFilter, em_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)
{
EMStripSigFilter *stripsig = (EMStripSigFilter *) 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 {
while (inptr < inend && *inptr != '\n')
inptr++;
if (inptr == inend) {
stripsig->midline = TRUE;
break;
}
inptr++;
}
}
if (start != NULL)
inptr = start;
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)
{
EMStripSigFilter *stripsig = (EMStripSigFilter *) filter;
stripsig->midline = FALSE;
}
static void
em_stripsig_filter_class_init (EMStripSigFilterClass *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
em_stripsig_filter_init (EMStripSigFilter *filter)
{
}
/**
* em_stripsig_filter_new:
*
* Creates a new stripsig filter.
*
* Returns a new stripsig filter.
**/
CamelMimeFilter *
em_stripsig_filter_new (void)
{
return g_object_new (EM_TYPE_STRIPSIG_FILTER, NULL);
}