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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. 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.
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
FileLogger::FileLogger (const File& file,
const String& welcomeMessage,
const int64 maxInitialFileSizeBytes)
: logFile (file)
{
if (maxInitialFileSizeBytes >= 0)
trimFileSize (logFile, maxInitialFileSizeBytes);
if (! file.exists())
file.create(); // (to create the parent directories)
String welcome;
welcome << newLine
<< "**********************************************************" << newLine
<< welcomeMessage << newLine
<< "Log started: " << Time::getCurrentTime().toString (true, true) << newLine;
FileLogger::logMessage (welcome);
}
FileLogger::~FileLogger() {}
//==============================================================================
void FileLogger::logMessage (const String& message)
{
const ScopedLock sl (logLock);
DBG (message);
FileOutputStream out (logFile, 256);
out << message << newLine;
}
void FileLogger::trimFileSize (const File& file, int64 maxFileSizeBytes)
{
if (maxFileSizeBytes <= 0)
{
file.deleteFile();
}
else
{
const int64 fileSize = file.getSize();
if (fileSize > maxFileSizeBytes)
{
TemporaryFile tempFile (file);
{
FileOutputStream out (tempFile.getFile());
FileInputStream in (file);
if (! (out.openedOk() && in.openedOk()))
return;
in.setPosition (fileSize - maxFileSizeBytes);
for (;;)
{
const char c = in.readByte();
if (c == 0)
return;
if (c == '\n' || c == '\r')
{
out << c;
break;
}
}
out.writeFromInputStream (in, -1);
}
tempFile.overwriteTargetFileWithTemporary();
}
}
}
//==============================================================================
File FileLogger::getSystemLogFileFolder()
{
#if JUCE_MAC
return File ("~/Library/Logs");
#else
return File::getSpecialLocation (File::userApplicationDataDirectory);
#endif
}
FileLogger* FileLogger::createDefaultAppLogger (const String& logFileSubDirectoryName,
const String& logFileName,
const String& welcomeMessage,
const int64 maxInitialFileSizeBytes)
{
return new FileLogger (getSystemLogFileFolder().getChildFile (logFileSubDirectoryName)
.getChildFile (logFileName),
welcomeMessage, maxInitialFileSizeBytes);
}
FileLogger* FileLogger::createDateStampedLogger (const String& logFileSubDirectoryName,
const String& logFileNameRoot,
const String& logFileNameSuffix,
const String& welcomeMessage)
{
return new FileLogger (getSystemLogFileFolder().getChildFile (logFileSubDirectoryName)
.getChildFile (logFileNameRoot + Time::getCurrentTime().formatted ("%Y-%m-%d_%H-%M-%S"))
.withFileExtension (logFileNameSuffix)
.getNonexistentSibling(),
welcomeMessage, 0);
}
} // namespace juce
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