134 lines
4.6 KiB
C++
134 lines
4.6 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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FileLogger::FileLogger (const File& file,
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const String& welcomeMessage,
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const int64 maxInitialFileSizeBytes)
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: logFile (file)
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{
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if (maxInitialFileSizeBytes >= 0)
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trimFileSize (logFile, maxInitialFileSizeBytes);
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if (! file.exists())
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file.create(); // (to create the parent directories)
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String welcome;
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welcome << newLine
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<< "**********************************************************" << newLine
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<< welcomeMessage << newLine
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<< "Log started: " << Time::getCurrentTime().toString (true, true) << newLine;
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FileLogger::logMessage (welcome);
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}
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FileLogger::~FileLogger() {}
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//==============================================================================
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void FileLogger::logMessage (const String& message)
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{
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const ScopedLock sl (logLock);
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DBG (message);
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FileOutputStream out (logFile, 256);
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out << message << newLine;
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}
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void FileLogger::trimFileSize (const File& file, int64 maxFileSizeBytes)
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{
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if (maxFileSizeBytes <= 0)
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{
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file.deleteFile();
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}
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else
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{
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const int64 fileSize = file.getSize();
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if (fileSize > maxFileSizeBytes)
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{
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TemporaryFile tempFile (file);
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{
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FileOutputStream out (tempFile.getFile());
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FileInputStream in (file);
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if (! (out.openedOk() && in.openedOk()))
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return;
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in.setPosition (fileSize - maxFileSizeBytes);
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for (;;)
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{
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const char c = in.readByte();
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if (c == 0)
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return;
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if (c == '\n' || c == '\r')
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{
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out << c;
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break;
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}
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}
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out.writeFromInputStream (in, -1);
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}
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tempFile.overwriteTargetFileWithTemporary();
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}
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}
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}
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//==============================================================================
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File FileLogger::getSystemLogFileFolder()
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{
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#if JUCE_MAC
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return File ("~/Library/Logs");
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#else
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return File::getSpecialLocation (File::userApplicationDataDirectory);
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#endif
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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 int64 maxInitialFileSizeBytes)
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{
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return new FileLogger (getSystemLogFileFolder().getChildFile (logFileSubDirectoryName)
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.getChildFile (logFileName),
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welcomeMessage, maxInitialFileSizeBytes);
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}
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FileLogger* FileLogger::createDateStampedLogger (const String& logFileSubDirectoryName,
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const String& logFileNameRoot,
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const String& logFileNameSuffix,
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const String& welcomeMessage)
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{
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return new FileLogger (getSystemLogFileFolder().getChildFile (logFileSubDirectoryName)
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.getChildFile (logFileNameRoot + Time::getCurrentTime().formatted ("%Y-%m-%d_%H-%M-%S"))
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.withFileExtension (logFileNameSuffix)
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.getNonexistentSibling(),
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welcomeMessage, 0);
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}
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} // namespace juce
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