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https://github.com/TrinityCore/TrinityCore.git
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672e06a951
Ignore "w" flag and always use "a" for log files with dynamic name since the file handle is created at every log line and "w" would delete any other logged line from previous _write() calls. The best solution would be to overwrite only at first call and append at any other call.
98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
/*
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* Copyright (C) 2008-2014 TrinityCore <http://www.trinitycore.org/>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "AppenderFile.h"
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#if PLATFORM == PLATFORM_WINDOWS
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# include <Windows.h>
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#endif
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AppenderFile::AppenderFile(uint8 id, std::string const& name, LogLevel level, const char* _filename, const char* _logDir, const char* _mode, AppenderFlags _flags, uint64 fileSize):
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Appender(id, name, APPENDER_FILE, level, _flags),
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logfile(NULL),
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filename(_filename),
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logDir(_logDir),
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mode(_mode),
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maxFileSize(fileSize),
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fileSize(0)
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{
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dynamicName = std::string::npos != filename.find("%s");
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backup = (_flags & APPENDER_FLAGS_MAKE_FILE_BACKUP) != 0;
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logfile = !dynamicName ? OpenFile(_filename, _mode, mode == "w" && backup) : NULL;
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}
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AppenderFile::~AppenderFile()
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{
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CloseFile();
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}
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void AppenderFile::_write(LogMessage const& message)
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{
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bool exceedMaxSize = maxFileSize > 0 && (fileSize.value() + message.Size()) > maxFileSize;
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if (dynamicName)
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{
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char namebuf[TRINITY_PATH_MAX];
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snprintf(namebuf, TRINITY_PATH_MAX, filename.c_str(), message.param1.c_str());
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// always use "a" with dynamic name otherwise it could delete the log we wrote in last _write() call
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logfile = OpenFile(namebuf, "a", backup || exceedMaxSize);
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}
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else if (exceedMaxSize)
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logfile = OpenFile(filename, "w", true);
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if (!logfile)
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return;
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fprintf(logfile, "%s%s", message.prefix.c_str(), message.text.c_str());
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fflush(logfile);
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fileSize += uint64(message.Size());
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if (dynamicName)
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CloseFile();
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}
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FILE* AppenderFile::OpenFile(std::string const &filename, std::string const &mode, bool backup)
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{
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std::string fullName(logDir + filename);
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if (backup)
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{
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CloseFile();
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std::string newName(fullName);
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newName.push_back('.');
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newName.append(LogMessage::getTimeStr(time(NULL)));
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rename(fullName.c_str(), newName.c_str()); // no error handling... if we couldn't make a backup, just ignore
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}
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if (FILE* ret = fopen(fullName.c_str(), mode.c_str()))
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{
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fileSize = ftell(ret);
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return ret;
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}
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return NULL;
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}
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void AppenderFile::CloseFile()
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{
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if (logfile)
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{
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fclose(logfile);
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logfile = NULL;
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}
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}
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