NAME

       ost::Slog - The slog class is used to stream messages to the system's logging facility
       (syslogd).

SYNOPSIS

       #include <slog.h>

       Inherits streambuf, and ostream.

   Public Types
       enum Class { classSecurity, classAudit, classDaemon, classUser, classDefault, classLocal0,
           classLocal1, classLocal2, classLocal3, classLocal4, classLocal5, classLocal6,
           classLocal7 }
       enum Level { levelEmergency = 1, levelAlert, levelCritical, levelError, levelWarning,
           levelNotice, levelInfo, levelDebug }
       typedef enum ost::Slog::Class Class
       typedef enum ost::Slog::Level Level

   Public Member Functions
       Slog (void)
           Default (and only) constructor.
       virtual ~Slog (void)
       void close (void)
       void open (const char *ident, Class grp=classUser)
           (re)opens the output stream.
       Slog & operator() (const char *ident, Class grp=classUser, Level level=levelError)
           Sets the log identifier, level, and class to use for subsequent output.
       Slog & operator() (Level level, Class grp=classDefault)
           Changes the log level and class to use for subsequent output.
       Slog & operator() (void)
           Does nothing except return *this.
       void error (const char *format,...)
           Print a formatted syslog string.
       void warn (const char *format,...)
           Print a formatted syslog string.
       void debug (const char *format,...)
           Print a formatted syslog string.
       void emerg (const char *format,...)
           Print a formatted syslog string.
       void alert (const char *format,...)
           Print a formatted syslog string.
       void critical (const char *format,...)
           Print a formatted syslog string.
       void notice (const char *format,...)
           Print a formatted syslog string.
       void info (const char *format,...)
           Print a formatted syslog string.
       void level (Level enable)
           Sets the logging level.
       void clogEnable (bool f=true)
           Enables or disables the echoing of the messages to clog in addition to the syslog
           daemon.
       Slog & warn (void)
       Slog & error (void)
       Slog & debug (void)
       Slog & emerg (void)
       Slog & alert (void)
       Slog & critical (void)
       Slog & notice (void)
       Slog & info (void)

   Protected Member Functions
       int overflow (int c)
           This is the streambuf function that actually outputs the data to the device.

Detailed Description

       The slog class is used to stream messages to the system's logging facility (syslogd).

       A default slog object is used to avoid confusion with the native syslog facility and to
       imply a logical relationship to the C++ clog().

       The key difference is that the slog object sends it's output to the system logging daemon
       (typically syslogd) rather than through stderr. slog can be streamed with the << operator
       just like clog; a default slog object is pre-initialized, and you stream character data to
       it.

       The slog allows one to specify logging levels and other properties through the ()
       operators. Hence, once can do:

       slog('mydaemon', SLOG_DAEMON, SLOG_EMERGENCY) << I just died << endl;

       or things like:

       slog('mydaemon', SLOG_DAEMON);
       slog(SLOG_INFO) << 'daemon initalized' << endl;

       The intent is to be as common-place and as convenient to use as the stderr based clog
       facility found in C++, and this is especially useful for C++ daemons.

       The std::flush manipulator doesn't work. Either the std::endl or std::ends manipulators
       must be used to cause the output to be sent to the daemon.

       When this class is used on a system that doesn't have the syslog headers (i.e. a non-posix
       win32 box), the output goes to the a file with the same name as the syslog identifier
       string with '.log' appended to it. If the identifier string ends in '.exe', the '.exe' is
       removed before the '.log' is appened. (e.g. the identifier foo.exe will generate a log
       file named foo.log)

       Author:
           David Sugar dyfet@ostel.com
           Minor docs & hacks by Jon Little littlej@arlut.utexas.edu

       system logging facility class.

Member Typedef Documentation

   typedef enum ost::Slog::Class  ost::Slog::Class
   typedef enum ost::Slog::Level  ost::Slog::Level

Member Enumeration Documentation

   enum ost::Slog::Class
       Enumerator

       classSecurity

       classAudit

       classDaemon

       classUser

       classDefault

       classLocal0

       classLocal1

       classLocal2

       classLocal3

       classLocal4

       classLocal5

       classLocal6

       classLocal7

   enum ost::Slog::Level
       Enumerator

       levelEmergency

       levelAlert

       levelCritical

       levelError

       levelWarning

       levelNotice

       levelInfo

       levelDebug

Constructor & Destructor Documentation

   ost::Slog::Slog (void)
       Default (and only) constructor. The default log level is set to SLOG_DEBUG. There is no
       default log facility set. One should be set before attempting any output. This is done by
       the open() or the operator()(const char*, Class, Level) functions.

   virtual ost::Slog::~Slog (void) [virtual]

Member Function Documentation

   void ost::Slog::alert (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::alert (void) [inline]
       References levelAlert.

   void ost::Slog::clogEnable (bool f = true) [inline]
       Enables or disables the echoing of the messages to clog in addition to the syslog daemon.
       This is enabled by the default class constructor.

       Parameters:
           f true to enable, false to disable clog output

       Examples:
           slogTest.cpp.

   void ost::Slog::close (void)
   void ost::Slog::critical (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::critical (void) [inline]
       References levelCritical.

   void ost::Slog::debug (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::debug (void) [inline]
       References levelDebug.

   void ost::Slog::emerg (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::emerg (void) [inline]
       References levelEmergency.

   void ost::Slog::error (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::error (void) [inline]
       References levelError.

   void ost::Slog::info (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::info (void) [inline]
       References levelInfo.

   void ost::Slog::level (Level enable) [inline]
       Sets the logging level.

       Parameters:
           enable is the logging level to use for further output

   void ost::Slog::notice (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::notice (void) [inline]
       References levelNotice.

   void ost::Slog::open (const char * ident, Class grp = classUser)
       (re)opens the output stream.

       Parameters:
           ident The identifier portion of the message sent to the syslog daemon.
           grp The log facility the message is sent to

   Slog& ost::Slog::operator() (const char * ident, Class grp = classUser, Level level =
       levelError)
       Sets the log identifier, level, and class to use for subsequent output.

       Parameters:
           ident The identifier portion of the message
           grp The log facility the message is sent to
           level The log level of the message

   Slog& ost::Slog::operator() (Level level, Class grp = classDefault)
       Changes the log level and class to use for subsequent output.

       Parameters:
           level The log level of the message
           grp The log facility the message is sent to

   Slog& ost::Slog::operator() (void)
       Does nothing except return *this.

   int ost::Slog::overflow (int c) [protected]
       This is the streambuf function that actually outputs the data to the device. Since all
       output should be done with the standard ostream operators, this function should never be
       called directly.

   void ost::Slog::warn (const char * format,  ...)
       Print a formatted syslog string.

       Parameters:
           format string.

   Slog& ost::Slog::warn (void) [inline]
       References levelWarning.

Author

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