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# Copyrights 2011-2020 by [Mark Overmeer]. |
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# For other contributors see ChangeLog. |
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# See the manual pages for details on the licensing terms. |
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# Pod stripped from pm file by OODoc 2.02. |
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# This code is part of distribution POSIX-1003. Meta-POD processed with |
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# OODoc into POD and HTML manual-pages. See README.md |
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# Copyright Mark Overmeer. Licensed under the same terms as Perl itself. |
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package POSIX::1003::Sysconf; |
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use vars '$VERSION'; |
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$VERSION = '1.02'; |
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use base 'POSIX::1003::Module'; |
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use warnings; |
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use strict; |
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use Carp 'croak'; |
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my @constants; |
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my @functions = qw/sysconf sysconf_names/; |
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our %EXPORT_TAGS = |
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( constants => \@constants |
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, functions => \@functions |
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, tables => [ '%sysconf' ] |
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); |
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my $sysconf; |
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our %sysconf; |
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BEGIN { |
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$sysconf = sysconf_table; |
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push @constants, keys %$sysconf; |
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tie %sysconf, 'POSIX::1003::ReadOnlyTable', $sysconf; |
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} |
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sub sysconf($); |
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sub exampleValue($) |
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{ my ($class, $name) = @_; |
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$name =~ m/^_SC_/ or return; |
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my $val = sysconf $name; |
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defined $val ? $val : 'undef'; |
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} |
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sub sysconf($) |
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{ my $key = shift // return; |
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$key =~ /^_SC_/ |
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or croak "pass the constant name as string"; |
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my $id = $sysconf->{$key} // return; |
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my $val = POSIX::sysconf($id) // return; |
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$val+0; # remove " but true" from "0" |
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} |
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sub _create_constant($) |
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{ my ($class, $name) = @_; |
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my $id = $sysconf->{$name} // return sub() {undef}; |
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sub() {POSIX::sysconf($id)}; |
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} |
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sub sysconf_names() { keys %$sysconf } |
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1; |