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annotate engine/core/util/log/logger.h @ 518:e4cd18a179af

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Added the PlayerActionListener. Added the ability to load NPCs from the settings file (this may be temporary). The idea of putting the NPCs in the settings file is to allow for custom attributes to be added without modification to the editor.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 26 May 2010 21:29:46 +0000
parents 90005975cdbb
children
rev   line source
0
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_LOGGER_H
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23 #define FIFE_LOGGER_H
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24
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25 // Standard C++ library includes
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26 #include <iomanip>
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27 #include <iostream>
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28 #include <list>
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29 #include <sstream>
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30 #include <string>
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31 #include <vector>
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32 #include <map>
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33 #include <set>
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34
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35 // 3rd party library includes
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36
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37 // FIFE includes
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38 // These includes are split up in two parts, separated by one empty line
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39 // First block: files included from the FIFE root src directory
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40 // Second block: files included from the same folder
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41 #include "modules.h"
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42
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43 #ifdef LOG_ENABLED
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44
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45 /** Logs given message with log level "debug" using given logger instance
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46 */
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47 #define FL_DBG(logger, msg) do { if (LogManager::instance()->isVisible(logger.getModule())) logger.log(LogManager::LEVEL_DEBUG, msg); } while(0)
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48
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49 /** Logs given message with log level "log" using given logger instance
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50 */
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51 #define FL_LOG(logger, msg) do { if (LogManager::instance()->isVisible(logger.getModule())) logger.log(LogManager::LEVEL_LOG, msg); } while(0)
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52
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53 /** Logs given message with log level "warning" using given logger instance
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54 */
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55 #define FL_WARN(logger, msg) do { if (LogManager::instance()->isVisible(logger.getModule())) logger.log(LogManager::LEVEL_WARN, msg); } while(0)
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56
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57 /** Logs given message with log level "error" using given logger instance
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58 */
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59 #define FL_ERR(logger, msg) do { if (LogManager::instance()->isVisible(logger.getModule())) logger.log(LogManager::LEVEL_ERROR, msg); } while(0)
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60
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61 /** Logs given message with log level "pacic" using given logger instance.
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62 * Causes also program to abort
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63 */
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64 #define FL_PANIC(logger, msg) do { if (LogManager::instance()->isVisible(logger.getModule())) logger.log(LogManager::LEVEL_PANIC, msg); } while(0)
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65
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66 #else
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67 // empty definitions in case logs are turned off for speed
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68 #define FL_DBG(logger, msg)
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69 #define FL_LOG(logger, msg)
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70 #define FL_WARN(logger, msg)
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71 #define FL_ERR(logger, msg)
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72 #define FL_PANIC(logger, msg)
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73 #endif
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74
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75 namespace FIFE {
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76
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77 /** Helper class to create log strings out from separate parts
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78 * Usage: LMsg("some text") << variable << ", " << other variable
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79 */
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80 class LMsg {
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81 public:
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82 LMsg(const std::string& msg=""): str(msg) {}
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83 ~LMsg() {}
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84
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85 template <typename T> LMsg& operator<<(const T& t) {
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86 std::ostringstream stream;
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87 stream << t;
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88 str += stream.str();
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89 return *this;
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90 }
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91
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92 std::string str;
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93 };
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94
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95 /** Logmanager takes care of log filtering and output direction
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96 */
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97 class LogManager {
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98 public:
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99 /** Loglevel is used to set a treshold for output messages + related filter
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100 * E.g. in case log message has LEVEL_WARN, but the filter treshold is LEVEL_ERROR,
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101 * log message is not outputted
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102 */
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103 enum LogLevel {
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104 LEVEL_DEBUG = 0,
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105 LEVEL_LOG = 1,
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106 LEVEL_WARN = 2,
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107 LEVEL_ERROR = 3,
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108 LEVEL_PANIC = 4
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109 };
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110
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111 /** Returns instance to log manager. Log manager is a singleton class
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112 */
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113 static LogManager* instance();
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114
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115 /** Destructor
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116 */
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117 ~LogManager();
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118
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119 /** Logs given message
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120 * @param level level of this log (e.g. warning)
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121 * @param module module where this log message is coming from. Modules are defined in modules.h-file
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122 * @param msg message to log
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123 * @note do not use this method directly, instead use FL_WARN (or any other FL_XXX) macro
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124 */
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125 void log(LogLevel level, logmodule_t module, const std::string& msg);
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126
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127 /** Sets currently used level filter.
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128 * For usage, @see LogManager::LogLevel
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129 */
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130 void setLevelFilter(LogLevel level);
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131
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132 /** Gets currently used level filter.
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133 * @see LogManager::LogLevel
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134 */
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135 LogLevel getLevelFilter();
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136
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137 /** Adds visible module into logmanager
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138 * Module corresponds some module in the engine. Modules may contain other modules.
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139 * Modules and their structure is defined in file modules.h.
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140 * In case module is not visible, LogManager filters corresponding log messages
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141 * from output. In case some lower-level module is set visible, it also sets
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142 * all upper level modules visible
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143 * @param module module to set visible
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144 */
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145 void addVisibleModule(logmodule_t module);
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146
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147 /** Removes visible module, @see addVisibleModule
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148 */
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149 void removeVisibleModule(logmodule_t module);
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150
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151 /** Removes all visible modules, @see addVisibleModule
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152 */
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153 void clearVisibleModules();
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154
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155 /** Tells if given module is visible
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156 */
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157 bool isVisible(logmodule_t module);
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158
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159 /** Sets LogManager to log to prompt
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160 */
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161 void setLogToPrompt(bool log_to_promt);
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162
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163 /** Tells if LogManager is set to log to prompt
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164 */
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165 bool isLoggingToPrompt();
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166
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167 /** Sets LogManager to log to a file
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168 */
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169 void setLogToFile(bool logtofile);
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170
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171 /** Tells if LogManager is set to log to a file
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172 */
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173 bool isLoggingToFile();
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174
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175 /** Gets display name for given module id
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176 * E.g. LM_AUDIO -> "Audio"
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177 */
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178 std::string getModuleName(logmodule_t module);
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179
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180 private:
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181 void validateModule(logmodule_t m);
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182
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183 // hidden constructor for singleton
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184 LogManager();
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185 // validates if definitions in module.h are valid
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186 void validateModuleDescription(logmodule_t module);
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187
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188 // singleton instance
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189 static LogManager* m_instance;
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190 // current filter level
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191 LogLevel m_level;
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192 // visibility array for modules
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193 bool m_modules[LM_MODULE_MAX];
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194 // used during module description validation to check cycles in hierarchy
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195 std::vector<logmodule_t> module_check_stack;
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196
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197 bool m_logtofile;
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198 bool m_logtoprompt;
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199
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200 std::ofstream* m_logfile;
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201 };
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202
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203 /** Create a Logger instance to communicate with LogManager
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204 * Logger stores information about the current module thus reducing
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205 * the typing needed for individual traces
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206 * Common way of doing things is to instantiate a static Logger on
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207 * top of .cpp file and then use that in .cpp-file's methods
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208 */
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209 class Logger {
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210 public:
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211 /** Creates new logger and associates it with given module
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212 */
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213 Logger(logmodule_t module);
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214
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215 /** Destructor
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216 */
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217 ~Logger();
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218
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219 /** logs given message with given log level
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220 */
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221 void log(LogManager::LogLevel level, const std::string& msg);
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222
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223 /** logs given message with given log level.
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224 * Message is wrapped into LMsg instance for easy formatting
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225 */
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226 void log(LogManager::LogLevel level, const LMsg& msg);
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227
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228 /** gets module where this logger is associated to
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229 */
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230 inline logmodule_t getModule() const { return m_module; }
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231
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232 private:
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233 logmodule_t m_module;
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234 };
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235
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236 /** Helper for printing a pointer
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237 *
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238 * This is a helper structure that allows printing any kind of pointer
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239 * on (hopefully) any platform in hex, kind of like the %p format
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240 * string of printf.
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241 *
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242 * The mechanism is used by calling something like:
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243 * somestream << pprint(ptr);
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244 **/
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245 struct pprint {
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246 void* p;
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247 pprint( void* _p ) : p(_p) {}
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248 };
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249 }
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250
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251 namespace std {
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252 /** Print a pprint object to an ostream.
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253 *
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254 * This is pure Stroustrup, overloading the ostream operator<< to print
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255 * a formatted pointer from a pprint object to an ostream.
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256 *
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257 * \param s output stream
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258 * \param p pointer to print
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259 * \return reference to the modified stream
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260 * */
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261 template <class Ch, class Tr>
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262 basic_ostream<Ch,Tr>& operator<<( basic_ostream<Ch,Tr>& s, const FIFE::pprint& p ) {
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263 s << "0x"
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264 << hex << setw( 2*sizeof(void*) ) << setfill('0')
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265 << reinterpret_cast<unsigned long>( p.p );
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266
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267 return s;
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268 }
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269 }
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270
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271
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272 #endif