| 1 | /*
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| 2 |  * errorLogger.cpp
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| 3 |  *
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| 4 |  *  Created on: Oct 19, 2009
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| 5 |  *      Author: metzler
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| 6 |  */
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| 7 | 
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| 8 | #include <fstream>
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| 9 | #include "errorlogger.hpp"
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| 10 | #include "verbose.hpp"
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| 11 | 
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| 12 | ofstream null("/dev/null");
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| 13 | 
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| 14 | errorLogger* errorLogger::instance = NULL;
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| 15 | int errorLogger::verbosity = 2;
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| 16 | ostream* errorLogger::nix = &null;
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| 17 | 
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| 18 | /**
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| 19 |  * Constructor. Do not use this function. Use getInstance() instead.
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| 20 |  *
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| 21 |  * \return errorLogger instance
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| 22 |  */
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| 23 | errorLogger::errorLogger()
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| 24 | {
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| 25 |   instance = NULL;
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| 26 |   verbosity = 2;
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| 27 | };
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| 28 | 
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| 29 | /**
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| 30 |  * Destructor. Better use purgeInstance().
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| 31 |  */
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| 32 | errorLogger::~errorLogger() {
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| 33 |   verbosity = 2;
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| 34 | }
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| 35 | 
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| 36 | /**
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| 37 |  * Returns the singleton errorLogger instance.
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| 38 |  *
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| 39 |  * \return errorLogger instance
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| 40 |  */
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| 41 | errorLogger* errorLogger::getInstance() {
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| 42 |   if (instance == NULL) {
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| 43 |     instance = new errorLogger();
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| 44 |   }
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| 45 | 
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| 46 |   return instance;
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| 47 | }
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| 48 | 
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| 49 | 
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| 50 | /**
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| 51 |  * Purges the current errorLogger instance.
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| 52 |  */
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| 53 | void errorLogger::purgeInstance() {
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| 54 |   if (instance != NULL) {
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| 55 |     delete instance;
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| 56 |   }
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| 57 | 
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| 58 |   instance = NULL;
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| 59 | }
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| 60 | 
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| 61 | /**
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| 62 |  * Sets the verbosity.
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| 63 |  *
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| 64 |  * \param verbosityLevel verbosity
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| 65 |  */
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| 66 | void errorLogger::setVerbosity(int verbosityLevel) {
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| 67 |   verbosity = verbosityLevel;
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| 68 | }
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| 69 | 
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| 70 | /**
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| 71 |  * Operator for the Binary(arg) call.
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| 72 |  * Constructs temporary a Verbose class object, wherein the Binary is stored.
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| 73 |  * Then << is called, which calls Binary's print which adds the tabs and logs
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| 74 |  * the stream.
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| 75 |  * \param &ost stream to extend
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| 76 |  * \param &m pointer to created Binary object
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| 77 |  * \return &ost
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| 78 |  */
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| 79 | ostream& operator<<(class errorLogger& l, const Verbose& v)
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| 80 | {
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| 81 |   int verbosityLevel = l.verbosity;
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| 82 |   l.nix->clear();
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| 83 |   if (v.DoOutput(verbosityLevel)) {
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| 84 |     switch(v.Verbosity) {
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| 85 |       case 0:
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| 86 |         cerr << "CRITICAL: ";
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| 87 |         break;
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| 88 |       case 1:
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| 89 |         cerr << "ERROR: ";
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| 90 |         break;
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| 91 |       case 2:
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| 92 |         cerr << "WARNING: ";
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| 93 |         break;
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| 94 |       default:
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| 95 |         break;
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| 96 |     }
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| 97 |     v.print(cerr);
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| 98 |     return cerr;
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| 99 |   } else
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| 100 |     return *l.nix;
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| 101 | };
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| 102 | ostream& operator<<(class errorLogger* l, const Verbose& v)
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| 103 | {
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| 104 |   int verbosityLevel = l->verbosity;
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| 105 |   l->nix->clear();
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| 106 |   if (v.DoOutput(verbosityLevel)) {
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| 107 |     switch(v.Verbosity) {
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| 108 |       case 0:
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| 109 |         cerr << "CRITICAL: ";
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| 110 |         break;
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| 111 |       case 1:
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| 112 |         cerr << "ERROR: ";
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| 113 |         break;
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| 114 |       case 2:
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| 115 |         cerr << "WARNING: ";
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| 116 |         break;
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| 117 |       default:
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| 118 |         break;
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| 119 |     }
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| 120 |     v.print(cerr);
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| 121 |     return cerr;
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| 122 |   } else
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| 123 |     return *l->nix;
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| 124 | };
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| 125 | 
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| 126 | 
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