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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) ZenJu (zhnmju123 AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#ifndef DEBUG_LOG_HEADER_017324601673246392184621895740256342
#define DEBUG_LOG_HEADER_017324601673246392184621895740256342
#include <string>
#include <cstdio>
#include <memory>
#include "deprecate.h"
#include "string_tools.h"
#include "time.h"
//small macro for writing debug information into a logfile
#define WRITE_LOG(x) globalLogFile().write(__FILE__, __LINE__, x);
//speed alternative: wxLogDebug(wxT("text")) + DebugView
namespace zen
{
#ifdef FFS_WIN
const char ZEN_FILE_NAME_SEPARATOR = '\\';
#elif defined FFS_LINUX
const char ZEN_FILE_NAME_SEPARATOR = '/';
#else
#error specify platform!
#endif
class DebugLog
{
public:
class LogError {};
ZEN_DEPRECATE
DebugLog(const std::string& filePrefix = std::string()) :
filename(filePrefix + "DEBUG_" + formatTime<std::string>("%Y-%m-%d %H%M%S") + ".log"),
rowCount(0),
handle(std::fopen(filename.c_str(), "w")) //Windows: non binary mode: automatically convert "\n" to "\r\n"; Linux: binary is default!
{
if (!handle)
throw LogError();
}
~DebugLog() { std::fclose(handle); }
void write(const std::string& sourceFile,
int sourceRow,
const std::string& message)
{
const std::string logEntry = "[" + formatTime<std::string>(FORMAT_TIME) + "] " + afterLast(sourceFile, ZEN_FILE_NAME_SEPARATOR) +
", line " + toString<std::string>(sourceRow) + ": " + message + "\n";
const size_t bytesWritten = ::fwrite(logEntry.c_str(), 1, logEntry.size(), handle);
if (std::ferror(handle) != 0 || bytesWritten != logEntry.size())
throw LogError();
if (std::fflush(handle) != 0)
throw LogError();
++rowCount;
}
size_t getRows() const { return rowCount; }
std::string getFileName() const { return filename; }
private:
std::string filename;
size_t rowCount;
FILE* handle;
};
inline
DebugLog& globalLogFile()
{
static std::unique_ptr<DebugLog> inst(new DebugLog); //external linkage despite header definition!
if (inst->getRows() > 50000) //prevent logfile from becoming too big
{
const std::string oldName = inst->getFileName();
inst.reset();
std::remove(oldName.c_str()); //unchecked deletion!
inst.reset(new DebugLog);
}
return *inst;
}
}
#endif //DEBUG_LOG_HEADER_017324601673246392184621895740256342
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