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76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsStringStream_h__
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#define nsStringStream_h__
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#include "nsIStringStream.h"
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#include "nsStringGlue.h"
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#include "nsMemory.h"
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/**
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* Implements:
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* nsIStringInputStream
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* nsIInputStream
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* nsISeekableStream
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* nsISupportsCString
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*/
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#define NS_STRINGINPUTSTREAM_CLASSNAME "nsStringInputStream"
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#define NS_STRINGINPUTSTREAM_CONTRACTID "@mozilla.org/io/string-input-stream;1"
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#define NS_STRINGINPUTSTREAM_CID \
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{ /* 0abb0835-5000-4790-af28-61b3ba17c295 */ \
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0x0abb0835, \
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0x5000, \
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0x4790, \
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{0xaf, 0x28, 0x61, 0xb3, 0xba, 0x17, 0xc2, 0x95} \
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}
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/**
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* Factory method to get an nsInputStream from a byte buffer. Result will
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* implement nsIStringInputStream and nsISeekableStream.
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*
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* If aAssignment is NS_ASSIGNMENT_COPY, then the resulting stream holds a copy
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* of the given buffer (aStringToRead), and the caller is free to discard
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* aStringToRead after this function returns.
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*
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* If aAssignment is NS_ASSIGNMENT_DEPEND, then the resulting stream refers
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* directly to the given buffer (aStringToRead), so the caller must ensure that
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* the buffer remains valid for the lifetime of the stream object. Use with
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* care!!
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*
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* If aAssignment is NS_ASSIGNMENT_ADOPT, then the resulting stream refers
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* directly to the given buffer (aStringToRead) and will free aStringToRead
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* once the stream is closed.
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*
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* If aLength is less than zero, then the length of aStringToRead will be
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* determined by scanning the buffer for the first null byte.
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*/
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extern nsresult
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NS_NewByteInputStream(nsIInputStream** aStreamResult,
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const char* aStringToRead, PRInt32 aLength = -1,
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nsAssignmentType aAssignment = NS_ASSIGNMENT_DEPEND);
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/**
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* Factory method to get an nsInputStream from an nsAString. Result will
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* implement nsIStringInputStream and nsISeekableStream.
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*
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* The given string data will be converted to a single-byte data buffer via
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* truncation (i.e., the high-order byte of each character will be discarded).
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* This could result in data-loss, so be careful when using this function.
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*/
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extern nsresult
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NS_NewStringInputStream(nsIInputStream** aStreamResult,
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const nsAString& aStringToRead);
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/**
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* Factory method to get an nsInputStream from an nsACString. Result will
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* implement nsIStringInputStream and nsISeekableStream.
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*/
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extern nsresult
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NS_NewCStringInputStream(nsIInputStream** aStreamResult,
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const nsACString& aStringToRead);
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#endif // nsStringStream_h__
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