require 5;
package Pod::Simple::Debug;
use strict;
use vars qw($VERSION );
$VERSION = '3.13';
sub import {
my($value,$variable);
if(@_ == 2) {
$value = $_[1];
} elsif(@_ == 3) {
($variable, $value) = @_[1,2];
($variable, $value) = ($value, $variable)
if defined $value and ref($value) eq 'SCALAR'
and not(defined $variable and ref($variable) eq 'SCALAR')
; # tolerate getting it backwards
unless( defined $variable and ref($variable) eq 'SCALAR') {
require Carp;
Carp::croak("Usage:\n use Pod::Simple::Debug (NUMVAL)\nor"
. "\n use Pod::Simple::Debug (\\\$var, STARTNUMVAL)\nAborting");
}
} else {
require Carp;
Carp::croak("Usage:\n use Pod::Simple::Debug (NUMVAL)\nor"
. "\n use Pod::Simple::Debug (\\\$var, STARTNUMVAL)\nAborting");
}
if( defined &Pod::Simple::DEBUG ) {
require Carp;
Carp::croak("It's too late to call Pod::Simple::Debug -- "
. "Pod::Simple has already loaded\nAborting");
}
$value = 0 unless defined $value;
unless($value =~ m/^-?\d+$/) {
require Carp;
Carp::croak( "$value isn't a numeric value."
. "\nUsage:\n use Pod::Simple::Debug (NUMVAL)\nor"
. "\n use Pod::Simple::Debug (\\\$var, STARTNUMVAL)\nAborting");
}
if( defined $variable ) {
# make a not-really-constant
*Pod::Simple::DEBUG = sub () { $$variable } ;
$$variable = $value;
print "# Starting Pod::Simple::DEBUG = non-constant $variable with val $value\n";
} else {
*Pod::Simple::DEBUG = eval " sub () { $value } ";
print "# Starting Pod::Simple::DEBUG = $value\n";
}
require Pod::Simple;
return;
}
1;
__END__
=head1 NAME
Pod::Simple::Debug -- put Pod::Simple into trace/debug mode
=head1 SYNOPSIS
use Pod::Simple::Debug (5); # or some integer
Or:
my $debuglevel;
use Pod::Simple::Debug (\$debuglevel, 0);
...some stuff that uses Pod::Simple to do stuff, but which
you don't want debug output from...
$debug_level = 4;
...some stuff that uses Pod::Simple to do stuff, but which
you DO want debug output from...
$debug_level = 0;
=head1 DESCRIPTION
This is an internal module for controlling the debug level (a.k.a. trace
level) of Pod::Simple. This is of interest only to Pod::Simple
developers.
=head1 CAVEATS
Note that you should load this module I loading Pod::Simple (or
any Pod::Simple-based class). If you try loading Pod::Simple::Debug
after &Pod::Simple::DEBUG is already defined, Pod::Simple::Debug will
throw a fatal error to the effect that
"it's s too late to call Pod::Simple::Debug".
Note that the C