/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2000 Ximian, Inc.
*
* Authors: Dan Winship <danw@ximian.com>
* Jeffrey Stedfast <fejj@ximian.com>
* Peter Williams <peterw@ximian.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <ctype.h>
#include <string.h>
#include "camel-mime-filter-stripheader.h"
static void filter (CamelMimeFilter *f, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace);
static void complete (CamelMimeFilter *f, char *in, size_t len,
size_t prespace, char **out, size_t *outlen,
size_t *outprespace);
static void reset (CamelMimeFilter *f);
static void
camel_mime_filter_stripheader_init (CamelMimeFilterStripHeader *cmf)
{
cmf->seen_eoh = FALSE;
cmf->in_header = FALSE;
cmf->header = NULL;
cmf->header_len = 0;
}
static void
camel_mime_filter_stripheader_finalize (CamelMimeFilterStripHeader *cmf)
{
g_free (cmf->header);
}
static void
camel_mime_filter_stripheader_class_init (CamelMimeFilterStripHeaderClass *klass)
{
CamelMimeFilterClass *mime_filter_class =
(CamelMimeFilterClass *) klass;
mime_filter_class->filter = filter;
mime_filter_class->complete = complete;
mime_filter_class->reset = reset;
}
CamelType
camel_mime_filter_stripheader_get_type (void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
type = camel_type_register (camel_mime_filter_get_type(), "CamelMimeFilterStripHeader",
sizeof (CamelMimeFilterStripHeader),
sizeof (CamelMimeFilterStripHeaderClass),
(CamelObjectClassInitFunc) camel_mime_filter_stripheader_class_init,
NULL,
(CamelObjectInitFunc) camel_mime_filter_stripheader_init,
(CamelObjectFinalizeFunc) camel_mime_filter_stripheader_finalize);
}
return type;
}
static void
filter (CamelMimeFilter *f, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace)
{
CamelMimeFilterStripHeader *sh = (CamelMimeFilterStripHeader *)f;
char *p, *q;
int left;
/* all done? */
if (sh->seen_eoh) {
*out = in;
*outlen = len;
*outprespace = prespace;
return;
}
/* nope */
camel_mime_filter_set_size (f, len, FALSE);
p = in;
q = f->outbuf;
while (p < (in + len)) {
if (*p == '\n') {
left = in + len - p;
/* Not enough left to do anything useful. */
if (left < (sh->header_len + 3)) {
camel_mime_filter_backup (f, p, left);
break;
}
/* MIME-ese for 'end of headers'. Our work here is done, */
if (!strncmp (p, "\n\n", 2)) {
if (sh->in_header) {
/* we've already got a \n */
p++;
left--;
}
sh->seen_eoh = TRUE;
memcpy (q, p, left);
q += left;
break;
}
/* (Maybe) Grab this \n */
if (!sh->in_header)
*q++ = *p;
p++;
if (!strncmp (p, sh->header, sh->header_len) && p[sh->header_len] == ':')
/* ok it seems we /are/ in the header */
sh->in_header = TRUE;
else if (!isspace ((int)(*p)))
/* if we were in a header and we are on a space
* in_header will remain true...*/
sh->in_header = FALSE;
}
/* ok then */
if (!sh->in_header)
*q++ = *p;
p++;
}
*out = f->outbuf;
*outlen = q - f->outbuf;
*outprespace = f->outpre;
}
static void
complete (CamelMimeFilter *f, char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace)
{
if (len)
filter (f, in, len, prespace, out, outlen, outprespace);
}
static void
reset (CamelMimeFilter *f)
{
CamelMimeFilterStripHeader *sh = (CamelMimeFilterStripHeader *)f;
sh->seen_eoh = FALSE;
sh->in_header = FALSE;
}
CamelMimeFilter *
camel_mime_filter_stripheader_new (const gchar *header)
{
CamelMimeFilterStripHeader *sh = CAMEL_MIME_FILTER_STRIPHEADER(camel_object_new (CAMEL_MIME_FILTER_STRIPHEADER_TYPE));
sh->header = g_strdup (header);
sh->header_len = strlen (header);
return (CamelMimeFilter *)sh;
}