Colon::Config - XS helper to read a configuration file using ':' as separator
version 0.004
Colon::Config sample usage
#!perl use strict; use warnings; use Test2::Bundle::Extended; use Test2::Tools::Explain; use Colon::Config; my $config_sample = <<'EOS'; # this is a comment fruit:banana world: space empty: # ^^ empty line above is ignored not a column (ignored) sample:value:with:column last:value EOS my $array; is $array = Colon::Config::read($config_sample), [ # note this is an Array Ref by default 'fruit' => 'banana', 'world' => 'space', 'empty' => undef, 'sample' => 'value:with:column', 'last' => 'value' ] or diag explain $array; my $hash; is $hash = Colon::Config::read_as_hash($config_sample), { 'fruit' => 'banana', 'world' => 'space', 'empty' => undef, 'sample' => 'value:with:column', 'last' => 'value' } or diag explain $hash; # you can also read the value from any custom field my $data = <<EOS; ali:x:1000:1000:Ali Ben:/home/ali:/bin/zsh dad:y:1001:1010:Daddy:/home/dad:/bin/bash mum:z:1002:1010:Mummy::/sbin/nologin EOS is $array = Colon::Config::read( $data, 1 ), [ 'ali' => 'x', 'dad' => 'y', 'mum' => 'z', ] or diag explain $array; is $hash = Colon::Config::read_as_hash( $data, 1 ), { 'ali' => 'x', 'dad' => 'y', 'mum' => 'z', } or diag explain $hash; is $hash = Colon::Config::read_as_hash( $data, 2 ), { 'ali' => 1000, 'dad' => 1001, 'mum' => 1002, } or diag explain $hash; is $hash = Colon::Config::read_as_hash( $data, 4 ), { 'ali' => 'Ali Ben', 'dad' => 'Daddy', 'mum' => 'Mummy', } or diag explain $hash; is $hash = Colon::Config::read_as_hash( $data, 5 ), { 'ali' => '/home/ali', 'dad' => '/home/dad', 'mum' => undef, } or diag explain $hash; is $hash = Colon::Config::read_as_hash( $data, 99 ), { 'ali' => undef, 'dad' => undef, 'mum' => undef, } or diag explain $hash; done_testing;
Colon::Config
XS helper to read a configuration file using ':' as separator (could be customize later)
This right now pretty similar to a double split like this one
[ map { ( split( m{:\s+}, $_ ) )[ 0, 1 ] } split( m{\n}, $string ) ];
Parse the string $content and return an Array Ref with the list of key/values parsed. By default the value is the whole string after the first ':'.
But you can also read the value from any custom field, where 1 is the first field after the key...
#!perl use strict; use warnings; use Test2::Bundle::Extended; use Colon::Config; my $data = <<'EOS'; fruits:apple:banana:orange veggies:beet:corn:kale EOS is Colon::Config::read($data), [ fruits => 'apple:banana:orange', veggies => 'beet:corn:kale', ]; is Colon::Config::read( $data, 0 ), Colon::Config::read($data); is Colon::Config::read( $data, 1 ), [ fruits => 'apple', veggies => 'beet', ]; is Colon::Config::read( $data, 2 ), [ fruits => 'banana', veggies => 'corn', ]; is Colon::Config::read( $data, 99 ), [ fruits => undef, veggies => undef, ]; done_testing;
Note: return undef when not called with a string
This helper is provided as a convenient feature if you want to manipulate the Array Ref from read as a Hash Ref.
Similarly to read you can also specify from which field the value should be read.
Here are some benchmarks to check the advantage of the XS helper, against a pure perl alternative.
#!/usr/bin/perl -w use strict; use warnings; use Test2::Bundle::Extended; use Test2::Tools::Explain; use Test2::Plugin::NoWarnings; use Colon::Config; use Benchmark; our $DATA; my $map = { read_xs => sub { return Colon::Config::read( $DATA ); }, read_pp => sub { return Colon::Config::read_pp( $DATA ); # limitation on \s+ }, }; note "sanity check"; foreach my $method ( sort keys %$map ) { $DATA = <<EOS; key1: value key2: another value EOS is $map->{$method}->(), [ 'key1' => 'value', 'key2' => 'another value' ], "sanity check: '$method'" or die; } note "Running benchmark"; for my $size ( 1, 4, 16, 64, 256, 1024 ) { note "Using $size key/value pairs\n"; $DATA = ''; foreach my $id ( 1..$size ) { $DATA .= "key$id: value is $id\n"; } Benchmark::cmpthese( - 5 => $map ); note ""; } =pod # Using 1 key/value pairs Rate read_pp read_xs read_pp 442226/s -- -75% read_xs 1767796/s 300% -- # # Using 4 key/value pairs Rate read_pp read_xs read_pp 172602/s -- -68% read_xs 532991/s 209% -- # # Using 16 key/value pairs Rate read_pp read_xs read_pp 52187/s -- -64% read_xs 145873/s 180% -- # # Using 64 key/value pairs Rate read_pp read_xs read_pp 13307/s -- -66% read_xs 39519/s 197% -- # # Using 256 key/value pairs Rate read_pp read_xs read_pp 3533/s -- -65% read_xs 10228/s 189% -- # # Using 1024 key/value pairs Rate read_pp read_xs read_pp 899/s -- -60% read_xs 2265/s 152% -- =cut # checking field $map = { split => sub { return { map { ( split(m{:}), 3 )[ 0, 2 ] } split( m{\n}, $DATA ) } }, # colon => sub { # my $a = Colon::Config::read( $DATA ); # for ( my $i = 1 ; $i < scalar @$a; $i += 2 ) { # next unless defined $a->[ $i ]; # # preserve bogus behavior # #do { $a->[ $i ] = 3; next } unless index( $a->[ $i ], ':' ) >= 0; # # suggested fix # #next unless index( $a->[ $i ], ':' ) >= 0; # $a->[ $i ] = ( split( ':', $a->[ $i ], 3 ) ) [ 1 ] // 3; # // 3 to preserve bogus behavior # } # return { @$a }; # }, field => sub { return Colon::Config::read_as_hash( $DATA, 2 ); }, }; # sanity check $DATA = <<EOS; john:f1:f2:f3:f4 cena:f1:f2:f3:f4 EOS foreach my $method ( sort keys %$map ) { is $map->{$method}->(), { john => 'f2', cena => 'f2' }, "testing $method"; } note "Running benchmark"; for my $size ( 1, 4, 16, 64, 256, 1024 ) { note "Using $size key/value pairs\n"; $DATA = ''; foreach my $id ( 1..$size ) { $DATA .= "key$id:f1:f2:f3:f4\n"; } Benchmark::cmpthese( - 5 => $map ); note ""; } =pod # Using 1 key/value pairs Rate split field split 563142/s -- -9% field 617929/s 10% -- # # Using 4 key/value pairs Rate split field split 183828/s -- -30% field 261684/s 42% -- # # Using 16 key/value pairs Rate split field split 49493/s -- -39% field 81617/s 65% -- # # Using 64 key/value pairs Rate split field split 12753/s -- -45% field 23247/s 82% -- # # Using 256 key/value pairs Rate split field split 3041/s -- -42% field 5237/s 72% -- # # Using 1024 key/value pairs Rate split field split 728/s -- -41% field 1235/s 70% -- =cut done_testing; __END__
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Nicolas R <atoomic@cpan.org>
To install Colon::Config, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Colon::Config
CPAN shell
perl -MCPAN -e shell install Colon::Config
For more information on module installation, please visit the detailed CPAN module installation guide.