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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef nsStringStream_h__
#define nsStringStream_h__
#include "nsIStringStream.h"
#include "nsString.h"
#include "nsTArray.h"
/**
* Implements:
* nsIStringInputStream
* nsIInputStream
* nsISeekableStream
* nsITellableStream
* nsISupportsCString
*/
#define NS_STRINGINPUTSTREAM_CONTRACTID "@mozilla.org/io/string-input-stream;1"
#define NS_STRINGINPUTSTREAM_CID \
{/* 0abb0835-5000-4790-af28-61b3ba17c295 */ \
0x0abb0835, \
0x5000, \
0x4790, \
{0xaf, 0x28, 0x61, 0xb3, 0xba, 0x17, 0xc2, 0x95}}
/**
* An enumeration type used to represent a method of assignment.
*/
enum nsAssignmentType {
NS_ASSIGNMENT_COPY, // copy by value
NS_ASSIGNMENT_DEPEND, // copy by reference
NS_ASSIGNMENT_ADOPT // copy by reference (take ownership of resource)
};
/**
* Factory method to get an nsInputStream from a byte buffer. Result will
* implement nsIStringInputStream, nsITellableStream and nsISeekableStream.
*
* If aAssignment is NS_ASSIGNMENT_COPY, then the resulting stream holds a copy
* of the given buffer (aStringToRead), and the caller is free to discard
* aStringToRead after this function returns.
*
* If aAssignment is NS_ASSIGNMENT_DEPEND, then the resulting stream refers
* directly to the given buffer (aStringToRead), so the caller must ensure that
* the buffer remains valid for the lifetime of the stream object. Use with
* care!!
*
* If aAssignment is NS_ASSIGNMENT_ADOPT, then the resulting stream refers
* directly to the given buffer (aStringToRead) and will free aStringToRead
* once the stream is closed.
*/
extern nsresult NS_NewByteInputStream(nsIInputStream** aStreamResult,
mozilla::Span<const char> aStringToRead,
nsAssignmentType aAssignment);
/**
* Factory method to get an nsIInputStream from an nsTArray representing a byte
* buffer. This will take ownership of the data and empty out the nsTArray.
*
* Result will implement nsIStringInputStream, nsITellableStream and
* nsISeekableStream.
*/
extern nsresult NS_NewByteInputStream(nsIInputStream** aStreamResult,
nsTArray<uint8_t>&& aArray);
/**
* Factory method to get an nsIInputStream from an arbitrary StreamBufferSource.
* This will take a strong reference to the source.
*
* Result will implement nsIStringInputStream, nsITellableStream and
* nsISeekableStream.
*/
extern nsresult NS_NewByteInputStream(nsIInputStream** aStreamResult,
mozilla::StreamBufferSource* aSource);
/**
* Factory method to get an nsInputStream from an nsACString. Result will
* implement nsIStringInputStream, nsTellableStream and nsISeekableStream.
*/
extern nsresult NS_NewCStringInputStream(nsIInputStream** aStreamResult,
const nsACString& aStringToRead);
extern nsresult NS_NewCStringInputStream(nsIInputStream** aStreamResult,
nsCString&& aStringToRead);
#endif // nsStringStream_h__
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