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RedHat 9 (Linux i386) - man page for apache::testtrace (redhat section 3)

Apache::TestTrace(3)					User Contributed Perl Documentation				      Apache::TestTrace(3)

Apache::TestTrace - Helper output generation functions
use Apache::TestTrace; # test sub that exercises all the tracing functions sub test { print $Apache::TestTrace::LogFH "TraceLevel: $Apache::TestTrace::Level\n"; $_->($_,[1..3],$_) for qw(emerg alert crit error warning notice info debug todo); print $Apache::TestTrace::LogFH "\n\n" }; # demo the trace subs using default setting test(); { # override the default trace level with 'crit' local $Apache::TestTrace::Level = 'crit'; # now only 'crit' and higher levels will do tracing lower level test(); } { # set the trace level to 'debug' local $Apache::TestTrace::Level = 'debug'; # now only 'debug' and higher levels will do tracing lower level test(); } { open OUT, ">/tmp/foo" or die $!; # override the default Log filehandle local $Apache::TestTrace::LogFH = \*OUT; # now the traces will go into a new filehandle test(); close OUT; }
This module exports a number of functions that make it easier generating various diagnostics messages in your programs in a consistent way and saves some keystrokes as it handles the new lines and sends the messages to STDERR for you. This module provides the same trace methods as syslog(3)'s log levels. Listed from low level to high level: emerg(), alert(), crit(), error(), warning(), notice(), info(), debug(). The only different function is warning(), since warn is already taken by Perl. The module provides another trace function called todo() which is useful for todo items. It has the same level as debug (the highest). If you have "Term::ANSIColor" installed the diagnostic messages will be colorized, otherwise a special for each function prefix will be used. If "Data::Dumper" is installed and you pass a reference to a variable to any of these functions, the variable will be dumped with "Data::Dumper::Dumper()". Functions whose level is above the level set in $Apache::TestTrace::Level become NOPs. For example if the level is set to alert, only alert() and emerg() functions will generate the output. The default setting of this variable is warning. Other valid values are: emerg, alert, crit, error, warning, notice, info, debug. By default all the output generated by these functions goes to STDERR. You can override the default filehandler by overriding $Apache::TestTrace::LogFH with a new filehandler. When you override this package's global variables, think about localizing your local settings, so it won't affect other modules using this module in the same run.
o provide an option to disable the coloring altogether via some flag or import()
Stas Bekman with contributions from Doug MacEachern perl v5.8.0 2002-05-19 Apache::TestTrace(3)

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