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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*

 *  Authors: Jeffrey Stedfast <fejj@ximian.com>

 *

 *  Copyright 2002-2004 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.

 *

 */

 

 

#ifndef __CAMEL_MIME_FILTER_YENC_H__

#define __CAMEL_MIME_FILTER_YENC_H__

 

#include <camel/camel-mime-filter.h>

 

#define CAMEL_TYPE_MIME_FILTER_YENC            (camel_mime_filter_yenc_get_type ())

#define CAMEL_MIME_FILTER_YENC(obj)            (CAMEL_CHECK_CAST ((obj), CAMEL_TYPE_MIME_FILTER_YENC, CamelMimeFilterYenc))

#define CAMEL_MIME_FILTER_YENC_CLASS(klass)    (CAMEL_CHECK_CLASS_CAST ((klass), CAMEL_TYPE_MIME_FILTER_YENC, CamelMimeFilterYencClass))

#define CAMEL_IS_MIME_FILTER_YENC(obj)         (CAMEL_CHECK_TYPE ((obj), CAMEL_TYPE_MIME_FILTER_YENC))

#define CAMEL_IS_MIME_FILTER_YENC_CLASS(klass) (CAMEL_CHECK_CLASS_TYPE ((klass), CAMEL_TYPE_MIME_FILTER_YENC))

#define CAMEL_MIME_FILTER_YENC_GET_CLASS(obj)  (CAMEL_CHECK_GET_CLASS ((obj), CAMEL_TYPE_MIME_FILTER_YENC, CamelMimeFilterYencClass))

 

G_BEGIN_DECLS

 

typedef struct _CamelMimeFilterYenc CamelMimeFilterYenc;

typedef struct _CamelMimeFilterYencClass CamelMimeFilterYencClass;

 

typedef enum {

        CAMEL_MIME_FILTER_YENC_DIRECTION_ENCODE,

        CAMEL_MIME_FILTER_YENC_DIRECTION_DECODE

} CamelMimeFilterYencDirection;

 

#define CAMEL_MIME_YDECODE_STATE_INIT     (0)

#define CAMEL_MIME_YENCODE_STATE_INIT     (0)

 

/* first 8 bits are reserved for saving a byte */

 

/* reserved for use only within camel_mime_ydecode_step */

#define CAMEL_MIME_YDECODE_STATE_EOLN     (1 << 8)

#define CAMEL_MIME_YDECODE_STATE_ESCAPE   (1 << 9)

 

/* bits 10 and 11 reserved for later uses? */

 

#define CAMEL_MIME_YDECODE_STATE_BEGIN    (1 << 12)

#define CAMEL_MIME_YDECODE_STATE_PART     (1 << 13)

#define CAMEL_MIME_YDECODE_STATE_DECODE   (1 << 14)

#define CAMEL_MIME_YDECODE_STATE_END      (1 << 15)

 

#define CAMEL_MIME_YENCODE_CRC_INIT       (~0)

#define CAMEL_MIME_YENCODE_CRC_FINAL(crc) (~crc)

 

struct _CamelMimeFilterYenc {

        CamelMimeFilter parent_object;

        

        CamelMimeFilterYencDirection direction;

        

        int part;

        

        int state;

        guint32 pcrc;

        guint32 crc;

};

 

struct _CamelMimeFilterYencClass {

        CamelMimeFilterClass parent_class;

        

};

 

 

CamelType camel_mime_filter_yenc_get_type (void);

 

CamelMimeFilter *camel_mime_filter_yenc_new (CamelMimeFilterYencDirection direction);

 

void camel_mime_filter_yenc_set_state (CamelMimeFilterYenc *yenc, int state);

void camel_mime_filter_yenc_set_crc (CamelMimeFilterYenc *yenc, guint32 crc);

 

/*int     camel_mime_filter_yenc_get_part (CamelMimeFilterYenc *yenc);*/

guint32 camel_mime_filter_yenc_get_pcrc (CamelMimeFilterYenc *yenc);

guint32 camel_mime_filter_yenc_get_crc (CamelMimeFilterYenc *yenc);

 

 

size_t camel_ydecode_step  (const unsigned char *in, size_t inlen, unsigned char *out,

                            int *state, guint32 *pcrc, guint32 *crc);

size_t camel_yencode_step  (const unsigned char *in, size_t inlen, unsigned char *out,

                            int *state, guint32 *pcrc, guint32 *crc);

size_t camel_yencode_close (const unsigned char *in, size_t inlen, unsigned char *out,

                            int *state, guint32 *pcrc, guint32 *crc);

 

G_END_DECLS

 

#endif /* __CAMEL_MIME_FILTER_YENC_H__ */