Files
rippled/modules/beast_core/files/beast_FileOutputStream.h
Vinnie Falco 43e6d345e4 General beast update, fixes, optimizations, features:
* Clean ups, optimizations, and new File::commonDocumentsDirectory enum
* Replace sortArray with std::sort for performance
* More error tolerance in XML parser, speedups
* Refactor some byte-order mark detection code
* Add String::appendCharPointer overloads
* More XML parser optimisations and better error detection
* Misc performance tweaks
* Fixes for support of non utf8 strings
* Increased precision when storing strings in XmlElement
* Minor clean-ups
* Minor fix to XmlDocument
* Cleanups to CriticalSection and related synchronization primitives
* Fix DynamicArray unit test
2013-09-10 10:36:46 -07:00

110 lines
4.1 KiB
C++

//------------------------------------------------------------------------------
/*
This file is part of Beast: https://github.com/vinniefalco/Beast
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
Portions of this file are from JUCE.
Copyright (c) 2013 - Raw Material Software Ltd.
Please visit http://www.juce.com
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef BEAST_FILEOUTPUTSTREAM_H_INCLUDED
#define BEAST_FILEOUTPUTSTREAM_H_INCLUDED
//==============================================================================
/**
An output stream that writes into a local file.
@see OutputStream, FileInputStream, File::createOutputStream
*/
class BEAST_API FileOutputStream
: public OutputStream
, LeakChecked <FileOutputStream>
{
public:
//==============================================================================
/** Creates a FileOutputStream.
If the file doesn't exist, it will first be created. If the file can't be
created or opened, the failedToOpen() method will return
true.
If the file already exists when opened, the stream's write-postion will
be set to the end of the file. To overwrite an existing file,
use File::deleteFile() before opening the stream, or use setPosition(0)
after it's opened (although this won't truncate the file).
@see TemporaryFile
*/
FileOutputStream (const File& fileToWriteTo,
size_t bufferSizeToUse = 16384);
/** Destructor. */
~FileOutputStream();
//==============================================================================
/** Returns the file that this stream is writing to.
*/
const File& getFile() const { return file; }
/** Returns the status of the file stream.
The result will be ok if the file opened successfully. If an error occurs while
opening or writing to the file, this will contain an error message.
*/
const Result& getStatus() const noexcept { return status; }
/** Returns true if the stream couldn't be opened for some reason.
@see getResult()
*/
bool failedToOpen() const noexcept { return status.failed(); }
/** Returns true if the stream opened without problems.
@see getResult()
*/
bool openedOk() const noexcept { return status.wasOk(); }
/** Attempts to truncate the file to the current write position.
To truncate a file to a specific size, first use setPosition() to seek to the
appropriate location, and then call this method.
*/
Result truncate();
//==============================================================================
void flush() override;
int64 getPosition() override;
bool setPosition (int64) override;
bool write (const void*, size_t) override;
bool writeRepeatedByte (uint8 byte, size_t numTimesToRepeat) override;
private:
//==============================================================================
File file;
void* fileHandle;
Result status;
int64 currentPosition;
size_t bufferSize, bytesInBuffer;
HeapBlock <char> buffer;
void openHandle();
void closeHandle();
void flushInternal();
bool flushBuffer();
int64 setPositionInternal (int64);
ssize_t writeInternal (const void*, size_t);
};
#endif