Mercurial > pub > Impl

annotate lib/IMPL/Config/YAMLConfig.pm @ 427:09e0086a82a7 ref20150831 tip

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Merge
author cin
date Tue, 15 May 2018 00:51:33 +0300
parents b0481c071bea
children
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1
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2 =head1 NAME
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3
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4 C<IMPL::Condig::YAMLConfig> - YAML configuration parser for the container
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5
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6 =head1 SYNOPSIS
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7
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8 =begin code
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9
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10 use IMPL::require {
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11 YAMLConfig => 'IMPL::Config::YAMLConfig',
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12 Container => 'IMPL::Config::Container'
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13 };
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14
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15 my $config = YAMLConfig->new('config.yaml');
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16 $config->Load('additional.yaml');
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17 my $container = Container->new($parent);
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18 $config->ConfigureContainer($container);
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19
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20 =end code
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21
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22 =head1 DESCRIPTION
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23
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24 This module load YAML configuration and applies it to the container.
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25
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26 =head1 MEMBERS
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27
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28 =cut
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29
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30 package IMPL::Config::YAMLConfig;
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31 use strict;
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32
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33 use IMPL::Debug;
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34 use IMPL::lang qw(:base);
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35 use IMPL::Exception();
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36 use YAML::XS();
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37 use Sub::Util;
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38 use File::Spec();
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39 use URI::file();
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40
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41 use IMPL::declare {
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42 require => {
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43 ReferenceDescriptor => 'IMPL::Config::ReferenceDescriptor',
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44 ServiceDescriptor => 'IMPL::Config::ServiceDescriptor',
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45 ValueDescriptor => 'IMPL::Config::ValueDescriptor',
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46 Descriptor => '-IMPL::Config::Descriptor'
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47 },
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48 base => [
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49 'IMPL::Object' => undef
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50 ],
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51 props => [
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52 _services => 'ro',
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53 _stack => 'ro',
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54 _visited => 'ro',
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55 _current => 'ro'
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56 ]
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57 };
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58
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59 sub CTOR {
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60 my ( $this, %args ) = @_;
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61 $this->_services( {} );
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62 $this->_stack( [] );
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63 $this->_visited( {} );
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64 $this->Load( $args{load} ) if ( $args{load} );
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65 }
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66
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67 sub Load {
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68 my ( $this, $file ) = @_;
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69
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70 dbg_log("Load $file");
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71 my $prev = $this->_current;
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72 push @{ $this->_stack }, "$file";
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73
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74 dbg_log( "base: ", $prev || '' );
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75
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76 $this->_current( $prev ? URI::file->new($file)->abs($prev) : URI::file->new_abs($file))
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77 unless ref $file;
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78
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79 dbg_log( "translated: ", $this->_current);
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80
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81 my $config;
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82
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83 if ( isscalar($file) ) {
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84 $this->LoadConfiguration( YAML::XS::Load( ${$file} ) );
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85 }
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86 else {
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87 if ( not ref $file and defined $file ) {
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88 if ( not $this->_visited->{$this->_current} ) {
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89 $this->_visited->{$this->_current} = 1;
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90
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91 dbg_log("Loading YAML from file ", $this->_current->file);
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92
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93 $config = YAML::XS::LoadFile($this->_current->file);
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94 } else {
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95 dbg_warn("recursive includes: \n\t", join("\n\t", reverse @{$this->_stack}));
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96 }
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97 }
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98 else {
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99 $config = YAML::XS::LoadFile($file);
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100 }
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101 }
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102
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103 $this->LoadConfiguration($config) if defined $config;
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104
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105 $this->_current($prev);
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106 pop @{ $this->_stack };
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107
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108 return 1;
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109 }
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110
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111 sub LoadConfiguration {
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112 my ( $this, $config ) = @_;
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113
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114 die IMPL::InvalidArgumentException->new('config')
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115 unless ishash($config);
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116
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117 $this->Include( $config->{include} );
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118
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119 $this->_services( $this->ParseServices( $config->{services} ) );
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120 }
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121
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122 sub Include {
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123 my ( $this, $inc ) = @_;
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124 if ( isarray($inc) ) {
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125 $this->Include($_) foreach @$inc;
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126 }
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127 elsif ( defined $inc and not ref $inc ) {
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128 dbg_log("include: $inc");
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129 $this->Load( $inc );
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130 }
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131 }
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132
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133 sub ConfigureContainer {
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134 my ( $this, $container ) = @_;
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135
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136 die IMPL::InvalidArgumentException->new($container)
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137 unless $container;
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138
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139 foreach my $item ( @{ $this->_services } ) {
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140 $container->Register( $item->{role}, $item->{descriptor} );
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141 }
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142
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143 return $container;
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144 }
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145
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146 sub ParseServices {
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147 my ( $this, $services ) = @_;
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148
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149 return $services
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150 ? [
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151 map {
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152 {
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153 role => delete $_->{name},
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154 descriptor => $this->ParseDescriptor($_)
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155 };
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156 } @$services
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157 ]
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158 : undef;
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159 }
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160
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161 sub ParseDescriptor {
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162 my ( $this, $data ) = @_;
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163
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164 my %opts;
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165 if ( ref $data ) {
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166 if ( my $type = $data->{'$type'} ) {
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167 $opts{services} = $this->ParseServices( $data->{services} );
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168 $opts{type} = $type;
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169 $opts{args} = $this->ParseParams( $data->{params} )
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170 if $data->{params};
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171 $opts{norequire} = $data->{norequire};
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172 $opts{activation} = $data->{activation};
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173
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174 return ServiceDescriptor->new(%opts);
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175 }
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176 elsif ( my $dep = $data->{'$ref'} ) {
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177 $opts{services} = $this->ParseServices( $data->{services} );
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178 $opts{lazy} = $data->{lazy};
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179 $opts{optional} = $data->{optional};
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180 $opts{default} = $this->ParseDescriptor( $data->{default} )
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181 if exists $data->{default};
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182
422
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cin
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183 return ReferenceDescriptor->new( $dep, %opts );
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cin
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184 }
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cin
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185 elsif ( my $value = $data->{'$value'} ) {
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186 my ( $parsed, $raw ) = $this->ParseValue($value);
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cin
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187 $opts{services} = $this->ParseServices( $data->{services} );
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cin
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188 $opts{raw} = $raw;
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189 return ValueDescriptor->new( $parsed, %opts );
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cin
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190 }
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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191
421
7798345304bc working on IMPL::Config, removed old stuff
cin
parents: 419
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192 }
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193
422
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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diff changeset
194 my ( $parsed, $raw ) = $this->ParseValue($data);
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cin
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195 $opts{raw} = $raw;
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cin
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196 return is( $parsed, Descriptor )
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cin
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197 ? $parsed
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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198 : ValueDescriptor->new( $parsed, %opts );
421
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199 }
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200
422
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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diff changeset
201 sub IsDescriptorSpec {
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cin
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202 my ( $this, $spec ) = @_;
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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203 return ( ishash($spec) and grep exists $spec->{$_}, qw($type $ref $value) );
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cin
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204 }
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cin
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205
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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206 sub ParseParams {
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cin
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207 my ( $this, $params ) = @_;
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cin
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208
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cin
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209 if ( isarray($params) ) {
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cin
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210 return [ map $this->ParseDescriptor($_), @$params ];
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cin
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211 }
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cin
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diff changeset
212 elsif ( ishash($params) and not $this->IsDescriptorSpec($params) ) {
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213 return {
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214 map { $_, $this->ParseDescriptor( $params->{$_} ) }
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cin
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diff changeset
215 keys %$params
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cin
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216 };
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cin
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217 }
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cin
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218 return $this->ParseDescriptor($params);
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cin
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219 }
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cin
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220
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cin
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diff changeset
221 # parses value and returns a reference to the parsed value, i.e. descriptors
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cin
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222 # are recognized and instantinated.
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cin
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223 # returns ($parsed, $raw)
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cin
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224 # $parsed - the parsed value
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cin
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diff changeset
225 # $raw - the parsed value doesn't contain descriptors
421
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cin
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226 sub ParseValue {
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cin
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diff changeset
227 my ( $this, $value ) = @_;
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228
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cin
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229 my $raw = 1;
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cin
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230
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cin
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diff changeset
231 if ( ishash($value) ) {
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cin
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232 return ( $this->ParseDescriptor($value), 0 )
422
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cin
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233 if $this->IsDescriptorSpec($value);
421
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cin
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diff changeset
234
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cin
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diff changeset
235 my %res;
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cin
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236 while ( my ( $k, $v ) = each %$value ) {
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cin
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237 my ( $parsed, $flag ) = $this->ParseValue($v);
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238 $res{$k} = $parsed;
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239 $raw &&= $flag;
7798345304bc working on IMPL::Config, removed old stuff
cin
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240 }
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cin
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241 return ( \%res, $raw );
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cin
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242 }
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cin
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diff changeset
243 elsif ( isarray($value) ) {
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cin
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diff changeset
244 return (
7798345304bc working on IMPL::Config, removed old stuff
cin
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diff changeset
245 [
7798345304bc working on IMPL::Config, removed old stuff
cin
parents: 419
diff changeset
246 map {
7798345304bc working on IMPL::Config, removed old stuff
cin
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diff changeset
247 my ( $parsed, $flag ) = $this->ParseValue($_);
7798345304bc working on IMPL::Config, removed old stuff
cin
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248 $raw &&= $flag;
422
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cin
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diff changeset
249 $parsed;
421
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cin
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250 } @$value
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cin
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251 ],
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cin
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252 $raw
7798345304bc working on IMPL::Config, removed old stuff
cin
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253 );
7798345304bc working on IMPL::Config, removed old stuff
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254 }
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cin
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255 else {
422
b0481c071bea IMPL::Config::Container tests, YAMLConfiguration now works and tested
cin
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diff changeset
256 return ( $value, 1 );
421
7798345304bc working on IMPL::Config, removed old stuff
cin
parents: 419
diff changeset
257 }
418
cin
parents:
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258 }
cin
parents:
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259
cin
parents:
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260 1;