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Diffstat (limited to 'thirdparty/linux/include/coin/coin/CoinMessageHandler.hpp')
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diff --git a/thirdparty/linux/include/coin/coin/CoinMessageHandler.hpp b/thirdparty/linux/include/coin/coin/CoinMessageHandler.hpp new file mode 100644 index 0000000..7922630 --- /dev/null +++ b/thirdparty/linux/include/coin/coin/CoinMessageHandler.hpp @@ -0,0 +1,666 @@ +/* $Id: CoinMessageHandler.hpp 1514 2011-12-10 23:35:23Z lou $ */ +// Copyright (C) 2002, International Business Machines +// Corporation and others. All Rights Reserved. +// This code is licensed under the terms of the Eclipse Public License (EPL). + +#ifndef CoinMessageHandler_H +#define CoinMessageHandler_H + +#include "CoinUtilsConfig.h" +#include "CoinPragma.hpp" + +#include <iostream> +#include <cstdio> +#include <string> +#include <vector> + +/** \file CoinMessageHandler.hpp + \brief This is a first attempt at a message handler. + + The COIN Project is in favo(u)r of multi-language support. This implementation + of a message handler tries to make it as lightweight as possible in the sense + that only a subset of messages need to be defined --- the rest default to US + English. + + The default handler at present just prints to stdout or to a FILE pointer + + \todo + This needs to be worked over for correct operation with ISO character codes. +*/ + +/* + I (jjf) am strongly in favo(u)r of language support for an open + source project, but I have tried to make it as lightweight as + possible in the sense that only a subset of messages need to be + defined - the rest default to US English. There will be different + sets of messages for each component - so at present there is a + Clp component and a Coin component. + + Because messages are only used in a controlled environment and have no + impact on code and are tested by other tests I have included tests such + as language and derivation in other unit tests. +*/ +/* + Where there are derived classes I (jjf) have started message numbers at 1001. +*/ + + +/** \brief Class for one massaged message. + + A message consists of a text string with formatting codes (#message_), + an integer identifier (#externalNumber_) which also determines the severity + level (#severity_) of the message, and a detail (logging) level (#detail_). + + CoinOneMessage is just a container to hold this information. The + interpretation is set by CoinMessageHandler, which see. + */ + +class CoinOneMessage { + +public: + /**@name Constructors etc */ + //@{ + /** Default constructor. */ + CoinOneMessage(); + /** Normal constructor */ + CoinOneMessage(int externalNumber, char detail, + const char * message); + /** Destructor */ + ~CoinOneMessage(); + /** The copy constructor */ + CoinOneMessage(const CoinOneMessage&); + /** assignment operator. */ + CoinOneMessage& operator=(const CoinOneMessage&); + //@} + + /**@name Useful stuff */ + //@{ + /// Replace message text (<i>e.g.</i>, text in a different language) + void replaceMessage(const char * message); + //@} + + /**@name Get and set methods */ + //@{ + /** Get message ID number */ + inline int externalNumber() const + {return externalNumber_;} + /** \brief Set message ID number + + In the default CoinMessageHandler, this number is printed in the message + prefix and is used to determine the message severity level. + */ + inline void setExternalNumber(int number) + {externalNumber_=number;} + /// Severity + inline char severity() const + {return severity_;} + /// Set detail level + inline void setDetail(int level) + {detail_=static_cast<char> (level);} + /// Get detail level + inline int detail() const + {return detail_;} + /// Return the message text + inline char * message() const + {return message_;} + //@} + + /**@name member data */ + //@{ + /// number to print out (also determines severity) + int externalNumber_; + /// Will only print if detail matches + char detail_; + /// Severity + char severity_; + /// Messages (in correct language) (not all 400 may exist) + mutable char message_[400]; + //@} +}; + +/** \brief Class to hold and manipulate an array of massaged messages. + + Note that the message index used to reference a message in the array of + messages is completely distinct from the external ID number stored with the + message. +*/ + +class CoinMessages { + +public: + /** \brief Supported languages + + These are the languages that are supported. At present only + us_en is serious and the rest are for testing. + */ + enum Language { + us_en = 0, + uk_en, + it + }; + + /**@name Constructors etc */ + //@{ + /** Constructor with number of messages. */ + CoinMessages(int numberMessages=0); + /** Destructor */ + ~CoinMessages(); + /** The copy constructor */ + CoinMessages(const CoinMessages&); + /** assignment operator. */ + CoinMessages& operator=(const CoinMessages&); + //@} + + /**@name Useful stuff */ + //@{ + /*! \brief Installs a new message in the specified index position + + Any existing message is replaced, and a copy of the specified message is + installed. + */ + void addMessage(int messageNumber, const CoinOneMessage & message); + /*! \brief Replaces the text of the specified message + + Any existing text is deleted and the specified text is copied into the + specified message. + */ + void replaceMessage(int messageNumber, const char * message); + /** Language. Need to think about iso codes */ + inline Language language() const + {return language_;} + /** Set language */ + void setLanguage(Language newlanguage) + {language_ = newlanguage;} + /// Change detail level for one message + void setDetailMessage(int newLevel, int messageNumber); + /** \brief Change detail level for several messages + + messageNumbers is expected to contain the indices of the messages to be + changed. + If numberMessages >= 10000 or messageNumbers is NULL, the detail level + is changed on all messages. + */ + void setDetailMessages(int newLevel, int numberMessages, + int * messageNumbers); + /** Change detail level for all messages with low <= ID number < high */ + void setDetailMessages(int newLevel, int low, int high); + + /// Returns class + inline int getClass() const + { return class_;} + /// Moves to compact format + void toCompact(); + /// Moves from compact format + void fromCompact(); + //@} + + /**@name member data */ + //@{ + /// Number of messages + int numberMessages_; + /// Language + Language language_; + /// Source (null-terminated string, maximum 4 characters). + char source_[5]; + /// Class - see later on before CoinMessageHandler + int class_; + /** Length of fake CoinOneMessage array. + First you get numberMessages_ pointers which point to stuff + */ + int lengthMessages_; + /// Messages + CoinOneMessage ** message_; + //@} +}; + +// for convenience eol +enum CoinMessageMarker { + CoinMessageEol = 0, + CoinMessageNewline = 1 +}; + +/** Base class for message handling + + The default behavior is described here: messages are printed, and (if the + severity is sufficiently high) execution will be aborted. Inherit and + redefine the methods #print and #checkSeverity to augment the behaviour. + + Messages can be printed with or without a prefix; the prefix will consist + of a source string, the external ID number, and a letter code, + <i>e.g.</i>, Clp6024W. + A prefix makes the messages look less nimble but is very useful + for "grep" <i>etc</i>. + + <h3> Usage </h3> + + The general approach to using the COIN messaging facility is as follows: + <ul> + <li> Define your messages. For each message, you must supply an external + ID number, a log (detail) level, and a format string. Typically, you + define a convenience structure for this, something that's easy to + use to create an array of initialised message definitions at compile + time. + <li> Create a CoinMessages object, sized to accommodate the number of + messages you've defined. (Incremental growth will happen if + necessary as messages are loaded, but it's inefficient.) + <li> Load the messages into the CoinMessages object. Typically this + entails creating a CoinOneMessage object for each message and + passing it as a parameter to CoinMessages::addMessage(). You specify + the message's internal ID as the other parameter to addMessage. + <li> Create and use a CoinMessageHandler object to print messages. + </ul> + See, for example, CoinMessage.hpp and CoinMessage.cpp for an example of + the first three steps. `Format codes' below has a simple example of + printing a message. + + <h3> External ID numbers and severity </h3> + + CoinMessageHandler assumes the following relationship between the + external ID number of a message and the severity of the message: + \li <3000 are informational ('I') + \li <6000 warnings ('W') + \li <9000 non-fatal errors ('E') + \li >=9000 aborts the program (after printing the message) ('S') + + <h3> Log (detail) levels </h3> + + The default behaviour is that a message will print if its detail level + is less than or equal to the handler's log level. If all you want to + do is set a single log level for the handler, use #setLogLevel(int). + + If you want to get fancy, here's how it really works: There's an array, + #logLevels_, which you can manipulate with #setLogLevel(int,int). Each + entry logLevels_[i] specifies the log level for messages of class i (see + CoinMessages::class_). If logLevels_[0] is set to the magic number -1000 + you get the simple behaviour described above, whatever the class of the + messages. If logLevels_[0] is set to a valid log level (>= 0), then + logLevels_[i] really is the log level for messages of class i. + + <h3> Format codes </h3> + + CoinMessageHandler can print integers (normal, long, and long long), + doubles, characters, and strings. See the descriptions of the + various << operators. + + When processing a standard message with a format string, the formatting + codes specified in the format string will be passed to the sprintf + function, along with the argument. When generating a message with no + format string, each << operator uses a simple format code appropriate for + its argument. Consult the documentation for the standard printf facility + for further information on format codes. + + The special format code `%?' provides a hook to enable or disable + printing. For each `%?' code, there must be a corresponding call to + printing(bool). This provides a way to define optional parts in + messages, delineated by the code `%?' in the format string. Printing can + be suppressed for these optional parts, but any operands must still be + supplied. For example, given the message string + \verbatim + "A message with%? an optional integer %d and%? a double %g." + \endverbatim + installed in CoinMessages \c exampleMsgs with index 5, and + \c CoinMessageHandler \c hdl, the code + \code + hdl.message(5,exampleMsgs) ; + hdl.printing(true) << 42 ; + hdl.printing(true) << 53.5 << CoinMessageEol ; + \endcode + will print + \verbatim + A message with an optional integer 42 and a double 53.5. + \endverbatim + while + \code + hdl.message(5,exampleMsgs) ; + hdl.printing(false) << 42 ; + hdl.printing(true) << 53.5 << CoinMessageEol ; + \endcode + will print + \verbatim + A message with a double 53.5. + \endverbatim + + For additional examples of usage, see CoinMessageHandlerUnitTest in + CoinMessageHandlerTest.cpp. +*/ + +class CoinMessageHandler { + +friend bool CoinMessageHandlerUnitTest () ; + +public: + /**@name Virtual methods that the derived classes may provide */ + //@{ + /** Print message, return 0 normally. + */ + virtual int print() ; + /** Check message severity - if too bad then abort + */ + virtual void checkSeverity() ; + //@} + + /**@name Constructors etc */ + //@{ + /// Constructor + CoinMessageHandler(); + /// Constructor to put to file pointer (won't be closed) + CoinMessageHandler(FILE *fp); + /** Destructor */ + virtual ~CoinMessageHandler(); + /** The copy constructor */ + CoinMessageHandler(const CoinMessageHandler&); + /** Assignment operator. */ + CoinMessageHandler& operator=(const CoinMessageHandler&); + /// Clone + virtual CoinMessageHandler * clone() const; + //@} + /**@name Get and set methods */ + //@{ + /// Get detail level of a message. + inline int detail(int messageNumber, const CoinMessages &normalMessage) const + { return normalMessage.message_[messageNumber]->detail();} + /** Get current log (detail) level. */ + inline int logLevel() const + { return logLevel_;} + /** \brief Set current log (detail) level. + + If the log level is equal or greater than the detail level of a message, + the message will be printed. A rough convention for the amount of output + expected is + - 0 - none + - 1 - minimal + - 2 - normal low + - 3 - normal high + - 4 - verbose + + Please assign log levels to messages accordingly. Log levels of 8 and + above (8,16,32, <i>etc</i>.) are intended for selective debugging. + The logical AND of the log level specified in the message and the current + log level is used to determine if the message is printed. (In other words, + you're using individual bits to determine which messages are printed.) + */ + void setLogLevel(int value); + /** Get alternative log level. */ + inline int logLevel(int which) const + { return logLevels_[which];} + /*! \brief Set alternative log level value. + + Can be used to store alternative log level information within the handler. + */ + void setLogLevel(int which, int value); + + /// Set the number of significant digits for printing floating point numbers + void setPrecision(unsigned int new_precision); + /// Current number of significant digits for printing floating point numbers + inline int precision() { return (g_precision_) ; } + + /// Switch message prefix on or off. + void setPrefix(bool yesNo); + /// Current setting for printing message prefix. + bool prefix() const; + /*! \brief Values of double fields already processed. + + As the parameter for a double field is processed, the value is saved + and can be retrieved using this function. + */ + inline double doubleValue(int position) const + { return doubleValue_[position];} + /*! \brief Number of double fields already processed. + + Incremented each time a field of type double is processed. + */ + inline int numberDoubleFields() const + {return static_cast<int>(doubleValue_.size());} + /*! \brief Values of integer fields already processed. + + As the parameter for a integer field is processed, the value is saved + and can be retrieved using this function. + */ + inline int intValue(int position) const + { return longValue_[position];} + /*! \brief Number of integer fields already processed. + + Incremented each time a field of type integer is processed. + */ + inline int numberIntFields() const + {return static_cast<int>(longValue_.size());} + /*! \brief Values of char fields already processed. + + As the parameter for a char field is processed, the value is saved + and can be retrieved using this function. + */ + inline char charValue(int position) const + { return charValue_[position];} + /*! \brief Number of char fields already processed. + + Incremented each time a field of type char is processed. + */ + inline int numberCharFields() const + {return static_cast<int>(charValue_.size());} + /*! \brief Values of string fields already processed. + + As the parameter for a string field is processed, the value is saved + and can be retrieved using this function. + */ + inline std::string stringValue(int position) const + { return stringValue_[position];} + /*! \brief Number of string fields already processed. + + Incremented each time a field of type string is processed. + */ + inline int numberStringFields() const + {return static_cast<int>(stringValue_.size());} + + /// Current message + inline CoinOneMessage currentMessage() const + {return currentMessage_;} + /// Source of current message + inline std::string currentSource() const + {return source_;} + /// Output buffer + inline const char * messageBuffer() const + {return messageBuffer_;} + /// Highest message number (indicates any errors) + inline int highestNumber() const + {return highestNumber_;} + /// Get current file pointer + inline FILE * filePointer() const + { return fp_;} + /// Set new file pointer + inline void setFilePointer(FILE * fp) + { fp_ = fp;} + //@} + + /**@name Actions to create a message */ + //@{ + /*! \brief Start a message + + Look up the specified message. A prefix will be generated if enabled. + The message will be printed if the current log level is equal or greater + than the log level of the message. + */ + CoinMessageHandler &message(int messageNumber, + const CoinMessages &messages) ; + + /*! \brief Start or continue a message + + With detail = -1 (default), does nothing except return a reference to the + handler. (I.e., msghandler.message() << "foo" is precisely equivalent + to msghandler << "foo".) If \p msgDetail is >= 0, is will be used + as the detail level to determine whether the message should print + (assuming class 0). + + This can be used with any of the << operators. One use is to start + a message which will be constructed entirely from scratch. Another + use is continuation of a message after code that interrupts the usual + sequence of << operators. + */ + CoinMessageHandler & message(int detail = -1) ; + + /*! \brief Print a complete message + + Generate a standard prefix and append \c msg `as is'. This is intended as + a transition mechanism. The standard prefix is generated (if enabled), + and \c msg is appended. The message must be ended with a CoinMessageEol + marker. Attempts to add content with << will have no effect. + + The default value of \p detail will not change printing status. If + \p detail is >= 0, it will be used as the detail level to determine + whether the message should print (assuming class 0). + + */ + CoinMessageHandler &message(int externalNumber, const char *source, + const char *msg, + char severity, int detail = -1) ; + + /*! \brief Process an integer parameter value. + + The default format code is `%d'. + */ + CoinMessageHandler & operator<< (int intvalue); +#if COIN_BIG_INDEX==1 + /*! \brief Process a long integer parameter value. + + The default format code is `%ld'. + */ + CoinMessageHandler & operator<< (long longvalue); +#endif +#if COIN_BIG_INDEX==2 + /*! \brief Process a long long integer parameter value. + + The default format code is `%ld'. + */ + CoinMessageHandler & operator<< (long long longvalue); +#endif + /*! \brief Process a double parameter value. + + The default format code is `%d'. + */ + CoinMessageHandler & operator<< (double doublevalue); + /*! \brief Process a STL string parameter value. + + The default format code is `%g'. + */ + CoinMessageHandler & operator<< (const std::string& stringvalue); + /*! \brief Process a char parameter value. + + The default format code is `%s'. + */ + CoinMessageHandler & operator<< (char charvalue); + /*! \brief Process a C-style string parameter value. + + The default format code is `%c'. + */ + CoinMessageHandler & operator<< (const char *stringvalue); + /*! \brief Process a marker. + + The default format code is `%s'. + */ + CoinMessageHandler & operator<< (CoinMessageMarker); + /** Finish (and print) the message. + + Equivalent to using the CoinMessageEol marker. + */ + int finish(); + /*! \brief Enable or disable printing of an optional portion of a message. + + Optional portions of a message are delimited by `%?' markers, and + printing processes one %? marker. If \c onOff is true, the subsequent + portion of the message (to the next %? marker or the end of the format + string) will be printed. If \c onOff is false, printing is suppressed. + Parameters must still be supplied, whether printing is suppressed or not. + See the class documentation for an example. + */ + CoinMessageHandler & printing(bool onOff); + + //@} + + /** Log levels will be by type and will then use type + given in CoinMessage::class_ + + - 0 - Branch and bound code or similar + - 1 - Solver + - 2 - Stuff in Coin directory + - 3 - Cut generators + */ +#define COIN_NUM_LOG 4 +/// Maximum length of constructed message (characters) +#define COIN_MESSAGE_HANDLER_MAX_BUFFER_SIZE 1000 +protected: + /**@name Protected member data */ + //@{ + /// values in message + std::vector<double> doubleValue_; + std::vector<int> longValue_; + std::vector<char> charValue_; + std::vector<std::string> stringValue_; + /// Log level + int logLevel_; + /// Log levels + int logLevels_[COIN_NUM_LOG]; + /// Whether we want prefix (may get more subtle so is int) + int prefix_; + /// Current message + CoinOneMessage currentMessage_; + /// Internal number for use with enums + int internalNumber_; + /// Format string for message (remainder) + char * format_; + /// Output buffer + char messageBuffer_[COIN_MESSAGE_HANDLER_MAX_BUFFER_SIZE]; + /// Position in output buffer + char * messageOut_; + /// Current source of message + std::string source_; + /** 0 - Normal. + 1 - Put in values, move along format, but don't print. + 2 - A complete message was provided; nothing more to do but print + when CoinMessageEol is processed. Any << operators are treated + as noops. + 3 - do nothing except look for CoinMessageEol (i.e., the message + detail level was not sufficient to cause it to print). + */ + int printStatus_; + /// Highest message number (indicates any errors) + int highestNumber_; + /// File pointer + FILE * fp_; + /// Current format for floating point numbers + char g_format_[8]; + /// Current number of significant digits for floating point numbers + int g_precision_ ; + //@} + +private: + + /** The body of the copy constructor and the assignment operator */ + void gutsOfCopy(const CoinMessageHandler &rhs) ; + + /*! \brief Internal function to locate next format code. + + Intended for internal use. Side effects modify the format string. + */ + char *nextPerCent(char *start, const bool initial = false) ; + + /*! \brief Internal printing function. + + Makes it easier to split up print into clean, print and check severity + */ + int internalPrint() ; + + /// Decide if this message should print. + void calcPrintStatus(int msglvl, int msgclass) ; + + +}; + +//############################################################################# +/** A function that tests the methods in the CoinMessageHandler class. The + only reason for it not to be a member method is that this way it doesn't + have to be compiled into the library. And that's a gain, because the + library should be compiled with optimization on, but this method should be + compiled with debugging. */ +bool +CoinMessageHandlerUnitTest(); + +#endif |