DOKK / manpages / debian 12 / liblog4tango-doc / log4tango::PatternLayout.3.en
log4tango::PatternLayout(3) log4tango log4tango::PatternLayout(3)

log4tango::PatternLayout

#include <PatternLayout.hh>

Inherits log4tango::Layout.


class PatternComponent


PatternLayout ()
virtual ~PatternLayout ()
virtual std::string format (const LoggingEvent &event)
Formats the LoggingEvent in the style set by the set_conversion_pattern call. virtual int set_conversion_pattern (const std::string &conversionPattern)
Sets the format of log lines handled by this PatternLayout. virtual std::string get_conversion_pattern () const
virtual void clear_conversion_pattern ()


static const char * BASIC_CONVERSION_PATTERN = '%R %p %c %m%n'
A conversion pattern equivalent to the BasicLayout.

Formats the LoggingEvent in the style set by the set_conversion_pattern call. By default, set to '%%m%%n'

Reimplemented from log4tango::Layout.

Sets the format of log lines handled by this PatternLayout. By default, set to '%%m%%n'.
Format characters are as follows:

  • %%%% - a single percent sign
  • %c - the logger
  • %d - the date
    Date format: The date format character may be followed by a date format specifier enclosed between braces. For example, %d{%H:%M:%S,%l} or %d{%d %m %Y %H:%M:%S,%l}. If no date format specifier is given then the following format is used: 'Wed Jan 02 02:03:55 1980'. The date format specifier admits the same syntax as the ANSI C function strftime, with 1 addition. The addition is the specifier %l for milliseconds, padded with zeros to make 3 digits.
  • %m - the message
  • %n - the platform specific line separator
  • %p - the level
  • %r - milliseconds since this layout was created.
  • %R - seconds since Jan 1, 1970
  • %u - clock ticks since process start
  • %x - the NDC

Parameters

conversionPattern the conversion pattern

Exceptions

ConfigureFailure if the pattern is invalid

A conversion pattern equivalent to the BasicLayout.

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Fri Nov 11 2022 Version 5.0.2