mirror of
https://github.com/juce-framework/JUCE.git
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152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-9 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#include "juce_StandardHeader.h"
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BEGIN_JUCE_NAMESPACE
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#include "juce_FileLogger.h"
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#include "../io/files/juce_FileOutputStream.h"
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#include "../io/files/juce_FileInputStream.h"
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#include "../threads/juce_ScopedLock.h"
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#include "../containers/juce_ScopedPointer.h"
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#include "juce_SystemStats.h"
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//==============================================================================
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FileLogger::FileLogger (const File& logFile_,
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const String& welcomeMessage,
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const int maxInitialFileSizeBytes)
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: logFile (logFile_)
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{
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if (maxInitialFileSizeBytes >= 0)
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trimFileSize (maxInitialFileSizeBytes);
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if (! logFile_.exists())
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{
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// do this so that the parent directories get created..
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logFile_.create();
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}
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logStream = logFile_.createOutputStream (256);
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jassert (logStream != 0);
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String welcome;
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welcome << "\r\n**********************************************************\r\n"
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<< welcomeMessage
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<< "\r\nLog started: " << Time::getCurrentTime().toString (true, true)
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<< "\r\n";
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logMessage (welcome);
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}
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FileLogger::~FileLogger()
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{
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}
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//==============================================================================
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void FileLogger::logMessage (const String& message)
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{
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if (logStream != 0)
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{
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Logger::outputDebugString (message);
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const ScopedLock sl (logLock);
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(*logStream) << message << T("\r\n");
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logStream->flush();
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}
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}
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void FileLogger::trimFileSize (int maxFileSizeBytes) const
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{
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if (maxFileSizeBytes <= 0)
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{
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logFile.deleteFile();
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}
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else
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{
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const int64 fileSize = logFile.getSize();
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if (fileSize > maxFileSizeBytes)
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{
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ScopedPointer <FileInputStream> in (logFile.createInputStream());
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jassert (in != 0);
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if (in != 0)
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{
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in->setPosition (fileSize - maxFileSizeBytes);
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String content;
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{
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MemoryBlock contentToSave;
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contentToSave.setSize (maxFileSizeBytes + 4);
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contentToSave.fillWith (0);
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in->read (contentToSave.getData(), maxFileSizeBytes);
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in = 0;
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content = contentToSave.toString();
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}
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int newStart = 0;
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while (newStart < fileSize
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&& content[newStart] != '\n'
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&& content[newStart] != '\r')
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++newStart;
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logFile.deleteFile();
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logFile.appendText (content.substring (newStart), false, false);
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}
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}
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}
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}
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//==============================================================================
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FileLogger* FileLogger::createDefaultAppLogger (const String& logFileSubDirectoryName,
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const String& logFileName,
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const String& welcomeMessage,
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const int maxInitialFileSizeBytes)
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{
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#if JUCE_MAC
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File logFile ("~/Library/Logs");
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logFile = logFile.getChildFile (logFileName);
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#else
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File logFile (File::getSpecialLocation (File::userApplicationDataDirectory));
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if (logFile.isDirectory())
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{
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logFile = logFile.getChildFile (logFileSubDirectoryName)
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.getChildFile (logFileName);
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}
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#endif
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return new FileLogger (logFile, welcomeMessage, maxInitialFileSizeBytes);
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}
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END_JUCE_NAMESPACE
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