xpcom/io/nsIScriptableInputStream.idl

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/xpcom/io/nsIScriptableInputStream.idl	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,67 @@
     1.4 +/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
     1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "nsISupports.idl"
    1.10 +
    1.11 +interface nsIInputStream;
    1.12 +
    1.13 +/**
    1.14 + * nsIScriptableInputStream provides scriptable access to an nsIInputStream
    1.15 + * instance.
    1.16 + */
    1.17 +[scriptable, uuid(3fce9015-472a-4080-ac3e-cd875dbe361e)]
    1.18 +interface nsIScriptableInputStream : nsISupports
    1.19 +{ 
    1.20 +    /** 
    1.21 +     * Closes the stream. 
    1.22 +     */
    1.23 +    void close();
    1.24 +
    1.25 +    /**
    1.26 +     * Wrap the given nsIInputStream with this nsIScriptableInputStream. 
    1.27 +     *
    1.28 +     * @param aInputStream parameter providing the stream to wrap 
    1.29 +     */ 
    1.30 +    void init(in nsIInputStream aInputStream); 
    1.31 +
    1.32 +    /**
    1.33 +     * Return the number of bytes currently available in the stream 
    1.34 +     *
    1.35 +     * @return the number of bytes 
    1.36 +     *
    1.37 +     * @throws NS_BASE_STREAM_CLOSED if called after the stream has been closed
    1.38 +     */ 
    1.39 +    unsigned long long available(); 
    1.40 +
    1.41 +    /**
    1.42 +     * Read data from the stream.
    1.43 +     *
    1.44 +     * WARNING: If the data contains a null byte, then this method will return
    1.45 +     * a truncated string.
    1.46 +     *
    1.47 +     * @param aCount the maximum number of bytes to read 
    1.48 +     *
    1.49 +     * @return the data, which will be an empty string if the stream is at EOF.
    1.50 +     *
    1.51 +     * @throws NS_BASE_STREAM_CLOSED if called after the stream has been closed
    1.52 +     * @throws NS_ERROR_NOT_INITIALIZED if init was not called
    1.53 +     */ 
    1.54 +    string read(in unsigned long aCount); 
    1.55 +
    1.56 +    /**
    1.57 +     * Read data from the stream, including NULL bytes.
    1.58 +     *
    1.59 +     * @param aCount the maximum number of bytes to read.
    1.60 +     *
    1.61 +     * @return the data from the stream, which will be an empty string if EOF
    1.62 +     *         has been reached.
    1.63 +     *
    1.64 +     * @throws NS_BASE_STREAM_WOULD_BLOCK if reading from the input stream
    1.65 +     *         would block the calling thread (non-blocking mode only).
    1.66 +     * @throws NS_ERROR_FAILURE if there are not enough bytes available to read
    1.67 +     *         aCount amount of data.
    1.68 +     */
    1.69 +    ACString readBytes(in unsigned long aCount);
    1.70 +};

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