mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 00:25:27 +00:00
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
/* mimepbuf.h --- utilities for buffering a MIME part for later display.
|
|
Created: Jamie Zawinski <jwz@netscape.com>, 24-Sep-96.
|
|
*/
|
|
|
|
#ifndef _MIMEPBUF_H_
|
|
#define _MIMEPBUF_H_
|
|
|
|
#include "mimei.h"
|
|
|
|
/* This file provides the ability to save up the entire contents of a MIME
|
|
object (of arbitrary size), and then emit it all at once later. The
|
|
buffering is done in an efficient way that works well for both very large
|
|
and very small objects.
|
|
|
|
This is used in two places:
|
|
|
|
= The implementation of multipart/alternative uses this code to do a
|
|
one-part-lookahead. As it traverses its children, it moves forward
|
|
until it finds a part which cannot be displayed; and then it displays
|
|
the *previous* part (the last which *could* be displayed.) This code
|
|
is used to hold the previous part until it is needed.
|
|
*/
|
|
|
|
HG89321
|
|
|
|
/* An opaque object used to represent the buffered data.
|
|
*/
|
|
typedef struct MimePartBufferData MimePartBufferData;
|
|
|
|
/* Create an empty part buffer object.
|
|
*/
|
|
extern MimePartBufferData *MimePartBufferCreate (void);
|
|
|
|
/* Assert that the buffer is now full (EOF has been reached on the current
|
|
part.) This will free some resources, but leaves the part in the buffer.
|
|
After calling MimePartBufferReset, the buffer may be used to store a
|
|
different object.
|
|
*/
|
|
void MimePartBufferClose (MimePartBufferData *data);
|
|
|
|
/* Reset a part buffer object to the default state, discarding any currently-
|
|
buffered data.
|
|
*/
|
|
extern void MimePartBufferReset (MimePartBufferData *data);
|
|
|
|
/* Free the part buffer itself, and discard any buffered data.
|
|
*/
|
|
extern void MimePartBufferDestroy (MimePartBufferData *data);
|
|
|
|
/* Push a chunk of a MIME object into the buffer.
|
|
*/
|
|
extern int MimePartBufferWrite (MimePartBufferData *data,
|
|
const char *buf, int32 size);
|
|
|
|
/* Read the contents of the buffer back out. This will invoke the provided
|
|
read_fn with successive chunks of data until the buffer has been drained.
|
|
The provided function may be called once, or multiple times.
|
|
*/
|
|
extern int
|
|
MimePartBufferRead (MimePartBufferData *data,
|
|
int (*read_fn) (char *buf, int32 size, void *closure),
|
|
void *closure);
|
|
|
|
#endif /* _MIMEPBUF_H_ */
|