1Env::Sanctify(3)      User Contributed Perl Documentation     Env::Sanctify(3)
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NAME

6       Env::Sanctify - Lexically scoped sanctification of %ENV
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VERSION

9       version 1.12
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SYNOPSIS

12         my $sanctify = Env::Sanctify->sanctify( sanctify => [ '^POE' ] );
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14         # do some stuff, fork some processes etc.
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16         $sanctify->restore
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18         {
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20           my $sanctify = Env::Sanctify->sanctify( env => { POE_TRACE_DEFAULT => 1 } );
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22           # do some stuff, fork some processes etc.
23         }
24
25         # out of scope, %ENV is back to normal
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DESCRIPTION

28       Env::Sanctify is a module that provides lexically scoped manipulation
29       and sanctification of %ENV.
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31       You can specify that it alter or add additional environment variables
32       or remove existing ones according to a list of matching regexen.
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34       You can then either "restore" the environment back manually or let the
35       object fall out of scope, which automagically restores.
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37       Useful for manipulating the environment that forked processes and sub-
38       processes will inherit.
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CONSTRUCTOR

41       "sanctify"
42           Creates an Env::Sanctify object. Takes two optional arguments:
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44             'env', a hashref of env vars to add to %ENV;
45             'sanctify', an arrayref of regex pattern strings to match against current %ENV vars;
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47           Any %ENV var that matches a "sanctify" regex is removed from the
48           resultant %ENV.
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METHODs

51       "restore"
52           Explicitly restore the previous %ENV. This is called automagically
53           when the object is "DESTROY"ed, for instance, when it goes out of
54           scope.
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CAVEATS

57       It has been reported that redefining the Env::Sanctify object causes
58       unexpected behaviour.
59
60         use strict;
61         use warnings;
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63         use Env::Sanctify;
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65         $ENV{TEST} = 'Test thing';
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67         my $sanctify = Env::Sanctify->sanctify( sanctify => [ 'TEST' ] );
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69         printf "My ENV{TEST}: %s\n", $ENV{TEST};
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71         $sanctify = Env::Sanctify->sanctify( env => { TEST => 'Other answer' } );
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73         printf "My ENV{TEST}: %s\n", $ENV{TEST};
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75       This script outputs:
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77         My ENV{TEST}:
78         My ENV{TEST}: Test thing
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AUTHOR

81       Chris Williams <chris@bingosnet.co.uk>
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84       This software is copyright (c) 2014 by Chris Williams.
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86       This is free software; you can redistribute it and/or modify it under
87       the same terms as the Perl 5 programming language system itself.
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91perl v5.34.0                      2021-07-22                  Env::Sanctify(3)
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