Open Babel: oberror.h Source File

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# oberror.h

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    00001 /**********************************************************************
    00002 oberror.h - Handle error messages, warnings, notices, etc.
    00003
    00004 Copyright (C) 2002 by Stefan Kebekus
    00005 Some portions Copyright (C) 2003-2006 by Geoffrey R. Hutchison
    00006
    00007 This file is part of the Open Babel project.
    00008 For more information, see <http://openbabel.org/>
    00009
    00010 This program is free software; you can redistribute it and/or modify
    00011 it under the terms of the GNU General Public License as published by
    00012 the Free Software Foundation version 2 of the License.
    00013
    00014 This program is distributed in the hope that it will be useful, but
    00015 WITHOUT ANY WARRANTY; without even the implied warranty of
    00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00017 General Public License for more details.
    00018 ***********************************************************************/
    00019
    00020 #ifndef OB_ERROR_H
    00021 #define OB_ERROR_H
    00022
    00023 #include <openbabel/babelconfig.h>
    00024
    00025 #include <iosfwd>
    00026 #include <sstream>
    00027 #include <string>
    00028 #include <vector>
    00029 #include <deque>
    00030
    00031 #ifndef OBERROR
    00032 #define OBERROR
    00033 #endif
    00034
    00035 namespace OpenBabel
    00036 {
    00037
    00039   enum obMessageLevel {
    00040     obError,
    00041     obWarning,
    00042     obInfo,
    00043     obAuditMsg,
    00044     obDebug
    00045   };
    00046
    00047   enum errorQualifier {always, onceOnly};
    00048
    00052   class OBERROR OBError
    00053     {
    00054     public:
    00055
    00057       OBError( const std::string &method = "",
    00058                const std::string &errorMsg = "",
    00059                const std::string &explanation = "",
    00060                const std::string &possibleCause = "",
    00061                const std::string &suggestedRemedy = "",
    00062                const obMessageLevel = obDebug );
    00063
    00065       std::string message(void) const;
    00066
    00068       friend std::ostream& operator<< ( std::ostream &os, const OBError &er )
    00069         { return os << er.message(); };
    00070
    00073       std::string    GetMethod() const           { return _method;          }
    00075       std::string    GetError() const            { return _errorMsg;        }
    00077       std::string    GetExplanation() const      { return _explanation;     }
    00079       std::string    GetPossibleCause() const    { return _possibleCause;   }
    00081       std::string    GetSuggestedRemedy() const  { return _suggestedRemedy; }
    00083       obMessageLevel GetLevel() const            { return _level;           }
    00084
    00085       bool operator== (const OBError&)const;
    00086
    00087     protected:
    00088
    00090       std::string _method;
    00092       std::string _errorMsg;
    00094       std::string _explanation;
    00096       std::string _possibleCause;
    00098       std::string _suggestedRemedy;
    00099
    00101       obMessageLevel _level;
    00102     };
    00103
    00105   // More documentation in oberror.cpp
    00106   class OBERROR OBMessageHandler
    00107     {
    00108     protected:
    00110       unsigned int           _messageCount[5];
    00111
    00112     public:
    00113       OBMessageHandler();
    00114       ~OBMessageHandler();
    00115
    00117       void ThrowError(OBError err, errorQualifier qqualifier = always);
    00119       void ThrowError(const std::string &method, const std::string &errorMsg,
    00120                       obMessageLevel level = obDebug, errorQualifier qualifier = always);
    00121
    00123       std::vector<std::string> GetMessagesOfLevel(const obMessageLevel);
    00124
    00126       void StartLogging() { _logging = true; }
    00128       void StopLogging()  { _logging = false; }
    00129
    00131       void SetMaxLogEntries(unsigned int max) { _maxEntries = max; }
    00133       unsigned int GetMaxLogEntries() { return _maxEntries; }
    00134
    00136       void ClearLog() { _messageList.clear(); }
    00137
    00140       void SetOutputLevel(const obMessageLevel level) { _outputLevel = level; }
    00142       obMessageLevel GetOutputLevel() { return _outputLevel; }
    00143
    00144       void SetOutputStream(std::ostream *os) { _outputStream = os; }
    00145       std::ostream* GetOutputStream() { return _outputStream; }
    00146
    00148       bool StartErrorWrap();
    00150       bool StopErrorWrap();
    00151
    00153       unsigned int GetErrorMessageCount() { return _messageCount[obError];}
    00155       unsigned int GetWarningMessageCount() { return _messageCount[obWarning];}
    00157       unsigned int GetInfoMessageCount() { return _messageCount[obInfo];}
    00159       unsigned int GetAuditMessageCount() { return _messageCount[obAuditMsg];}
    00161       unsigned int GetDebugMessageCount() { return _messageCount[obDebug];}
    00163       std::string GetMessageSummary();
    00164
    00165     protected:
    00167       std::deque<OBError>    _messageList;
    00168
    00170       obMessageLevel         _outputLevel;
    00171
    00172       // self-explanatory
    00173       std::ostream          *_outputStream;
    00174
    00176       bool                   _logging;
    00178       unsigned int           _maxEntries;
    00179
    00181       std::streambuf        *_inWrapStreamBuf;
    00183       std::streambuf        *_filterStreamBuf;
    00184     };
    00185
    00186   OBERROR extern OBMessageHandler obErrorLog;
    00187
    00190
    00200   class OBERROR obLogBuf : public std::stringbuf
    00201     {
    00202     public:
    00204       virtual ~obLogBuf() { sync(); }
    00205
    00206     protected:
    00208       int sync()
    00209         {
    00210           obErrorLog.ThrowError("", str(), obInfo);
    00211           str(std::string()); // clear the buffer
    00212           return 0;
    00213         }
    00214     };
    00215
    00216 } // end namespace OpenBabel
    00217
    00218 #endif
    00219

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