annotate Lib/IMPL/Resources/Strings.pm @ 267:bbc0da7ef90e

*IMPL::Web::View refactoring
author cin
date Thu, 17 Jan 2013 02:39:44 +0400
parents 7c517134c42f
children 6dc1c369eb71
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1 use strict;
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2 use warnings;
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3
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4 package IMPL::Resources::Strings;
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5
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6 use File::Spec;
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7 use List::Util qw(first);
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8 use IMPL::Resources::Format qw(FormatMessage);
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9
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10 our $Locale ||= 'default';
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11 our $Encoding ||= 'utf-8';
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12 our @Locations;
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13
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14 sub import {
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15 my ($self,$refStrings,%options) = @_;
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16
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17 no strict 'refs';
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18
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19 my $class = caller;
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20
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21 if (ref $refStrings eq 'HASH') {
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22 my %map;
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23 while(my ($name,$format) = each %$refStrings) {
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24 $map{default}{$name} = $format;
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25
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26 *{"${class}::$name"} = sub {
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27 my $args = @_ == 1 ? shift : { @_ };
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28
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29 return _FormatMapMessage($class,$name,\%map,$Locale,$args);
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30 }
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31 }
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32 }
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33 }
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34
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35 sub _FormatMapMessage {
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36 my ($class,$msg,$map,$locale,$args) = @_;
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37
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38 if (not exists $map->{$locale} ) {
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39 $map->{$locale} = LoadStrings($class,$locale);
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40 }
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41
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42 return FormatMessage( ($map->{$locale} || $map->{default})->{$msg}, $args );
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43 }
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44
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45 sub LoadStrings {
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46 my ($class,$locale) = @_;
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47
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48 # Foo::Bar -> ('Foo','Bar')
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49 my @classNamespace = split /::/,$class;
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50
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51 my $classShortName = pop @classNamespace;
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52
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53 # Foo::Bar -> 'Foo/Bar.pm'
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54 my $classModuleName = File::Spec->catfile(@classNamespace,"${classShortName}.pm");
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55
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56 # 'Foo/Bar.pm' -> '/full/path/to/Foo/Bar.pm'
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57 my $fullModulePath = first { -f } map( File::Spec->catfile($_,$classModuleName), @INC );
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58
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59 my @ways = map {
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60 my @path = ($_);
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61 push @path,$Locale;
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62
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63 File::Spec->catfile($_,$Locale,@classNamespace,$classShortName);
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64 } @Locations;
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65
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66
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67 if ($fullModulePath) {
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68
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69 # '/full/path/to/Foo/Bar.pm' -> '/full/path/to/Foo'
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70 my ($vol,$dir,$file) = File::Spec->splitpath($fullModulePath);
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71 my $baseDir = File::Spec->catpath($vol,$dir,'');
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72
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73 # '/full/path/to/Foo' -> '/full/path/to/Foo/locale/En_US/Bar'
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74 push @ways, File::Spec->catfile($baseDir,'locale',$Locale,$classShortName);
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75 }
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76
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77 my $mapFile = first { -f } @ways;
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78
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79 return unless $mapFile;
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80
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81 return ParseStringsMap($mapFile);
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82 }
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83
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84 sub ParseStringsMap {
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85 my ($fname) = @_;
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86
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87 open my $hRes, "<:encoding($Encoding)", findFile($fname) or die "Failed to open file $fname: $!";
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88
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89 my %Map;
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90 my $line = 1;
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91 while (<$hRes>) {
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92 chomp;
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93 $line ++ and next if /^\s*$/;
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94
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95 if (/^(\w+)\s*=\s*(.*)$/) {
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96 $Map{$1} = $2;
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97 } else {
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98 die "Invalid resource format in $fname at $line";
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99 }
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100 $line ++;
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101 }
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102
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103 return \%Map;
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104 }
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105
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106 1;
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107
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108 __END__
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109
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110 =pod
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111
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112 =head1 NAME
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113
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114 C<IMPL::Resources::Strings> - Строковые ресурсы
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115
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116 =head1 SYNOPSIS
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117
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118 =begin code
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119
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120 package Foo;
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121
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122 use IMPL::Resources::Strings {
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123 msg_say_hello => "Hello, %name%!",
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124 msg_module_name => "Simple Foo class"
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125 };
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126
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127 sub InviteUser {
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128 my ($this,$uname) = @_;
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129
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130 print msg_say_hello(name => $uname);
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131
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132 }
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133
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134 =end code
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135
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136 =head1 DESCRIPTION
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137
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138 Импортирует в целевой модуль функции, которые возвращают локализованные
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139 параметризованные сообщения.
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140
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141 При импорте ищутся модули по следующему алгоритму:
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142
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143 В каталогах из массива C<@Locations> ищется файл с относительным путем
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144 C<$Locale/$ModName>, где C<$Locale> - глобальная переменная
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145 модуля C<IMPL::Resourses::Strings>, а переменная C<$ModName> получена
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146 путем замены 'C<::>' в имени целевого модуля на 'C</>'.
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147
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148 Если файл не был найден, то производится поиск в каталоге, где
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149 расположен сам модуль, файла с относительным путем C<locale/$Locale/$ShortModName>,
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150 где C<$ShortModeName> - последняя часть после 'C<::>' из имени целевого модуля.
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151
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152 Если файл не найден, то используются строки, указанные при объявлении
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153 сообщений в целевом модуле.
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154
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155 =head1 FORMAT
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156
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157 =begin code text
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158
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159 msg_name = any text with named %params%
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160 msg_hello = hello, %name%!!!
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161 msg_resolve = this is a value of the property: %user.age%
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162
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163 msg_short_err = %error.Message%
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164 msg_full_err = %error%
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165
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166 =end code text
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167
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168 =cut