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/*
* Copyright (C) 2000 Helix Code Inc.
*
* Authors: Michael Zucchi <notzed@helixcode.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.
*/
/* Abstract class for non-copying filters */
#ifndef _CAMEL_MIME_FILTER_H
#define _CAMEL_MIME_FILTER_H
#include <sys/types.h>
#include <camel/camel-object.h>
#define CAMEL_MIME_FILTER_TYPE (camel_mime_filter_get_type ())
#define CAMEL_MIME_FILTER(obj) CAMEL_CHECK_CAST (obj, camel_mime_filter_get_type (), CamelMimeFilter)
#define CAMEL_MIME_FILTER_CLASS(klass) CAMEL_CHECK_CLASS_CAST (klass, camel_mime_filter_get_type (), CamelMimeFilterClass)
#define CAMEL_IS_MIME_FILTER(obj) CAMEL_CHECK_TYPE (obj, camel_mime_filter_get_type ())
typedef struct _CamelMimeFilterClass CamelMimeFilterClass;
struct _CamelMimeFilter {
CamelObject parent;
struct _CamelMimeFilterPrivate *priv;
char *outreal; /* real malloc'd buffer */
char *outbuf; /* first 'writable' position allowed (outreal + outpre) */
char *outptr;
int outsize;
int outpre; /* prespace of this buffer */
char *backbuf;
int backsize;
int backlen; /* significant data there */
};
struct _CamelMimeFilterClass {
CamelObjectClass parent_class;
/* virtual functions */
void (*filter)(CamelMimeFilter *f,
char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace);
void (*complete)(CamelMimeFilter *f,
char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace);
void (*reset)(CamelMimeFilter *f);
};
CamelType camel_mime_filter_get_type (void);
CamelMimeFilter *camel_mime_filter_new (void);
void camel_mime_filter_filter(CamelMimeFilter *f,
char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace);
void camel_mime_filter_complete(CamelMimeFilter *f,
char *in, size_t len, size_t prespace,
char **out, size_t *outlen, size_t *outprespace);
void camel_mime_filter_reset(CamelMimeFilter *f);
/* sets/returns number of bytes backed up on the input */
void camel_mime_filter_backup(CamelMimeFilter *f, const char *data, size_t length);
/* ensure this much size available for filter output */
void camel_mime_filter_set_size(CamelMimeFilter *f, size_t size, int keep);
#endif /* ! _CAMEL_MIME_FILTER_H */
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