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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIInputStream;
/**
* nsIScriptableInputStream provides scriptable access to an nsIInputStream
* instance.
*/
[scriptable, uuid(3fce9015-472a-4080-ac3e-cd875dbe361e)]
interface nsIScriptableInputStream : nsISupports
{
/**
* Closes the stream.
*/
void close();
/**
* Wrap the given nsIInputStream with this nsIScriptableInputStream.
*
* @param aInputStream parameter providing the stream to wrap
*/
void init(in nsIInputStream aInputStream);
/**
* Return the number of bytes currently available in the stream
*
* @return the number of bytes
*
* @throws NS_BASE_STREAM_CLOSED if called after the stream has been closed
*/
unsigned long long available();
/**
* Read data from the stream.
*
* WARNING: If the data contains a null byte, then this method will return
* a truncated string.
*
* @param aCount the maximum number of bytes to read
*
* @return the data, which will be an empty string if the stream is at EOF.
*
* @throws NS_BASE_STREAM_CLOSED if called after the stream has been closed
* @throws NS_ERROR_NOT_INITIALIZED if init was not called
*/
string read(in unsigned long aCount);
/**
* Read data from the stream, including NULL bytes.
*
* @param aCount the maximum number of bytes to read.
*
* @return the data from the stream, which will be an empty string if EOF
* has been reached.
*
* @throws NS_BASE_STREAM_WOULD_BLOCK if reading from the input stream
* would block the calling thread (non-blocking mode only).
* @throws NS_ERROR_FAILURE if there are not enough bytes available to read
* aCount amount of data.
*/
ACString readBytes(in unsigned long aCount);
};
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