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1 package Configuration;
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2 our $DataDir;
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3 package Schema::Form;
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4 use strict;
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5 use Storable;
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6 use Common;
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7 use URI::file;
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8 use BNFCompiler;
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9 use Schema::Form::Container;
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10 use Schema::Form::Field;
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11 use Schema::Form::Filter;
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12 use Schema::Form::Format;
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13 our @ISA = qw(Object);
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14
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15 BEGIN {
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16 DeclareProperty Name => ACCESS_READ;
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17 DeclareProperty Body => ACCESS_READ;
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18 }
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19
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20 sub CTOR {
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21 my ($this,%args) = @_;
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22
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23 $this->{$Name} = $args{Name};
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24
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25 }
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26
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27 sub SetBody {
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28 my ($this, $containerBody) = @_;
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29 $this->{$Body} = $containerBody;
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30 }
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31
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32 sub list {
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33 return( map { UNIVERSAL::isa($_,'ARRAY') ? @{$_} : defined $_ ? $_ : () } @_ );
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34 }
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35
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36 sub LoadForms {
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37 my ($class,$File,$CacheDir,$Encoding) = @_;
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38
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39 $Encoding or die new Exception('An encoding must be specified for forms');
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40
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41 my $Compiler = new BNFCompiler(SchemaCache => "${DataDir}Cache/",Transform => sub { BNFCompiler::DOM::TransformDOMToHash(@_,{skip_spaces => 1})} );
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42 $Compiler->LoadBNFSchema(file => 'Schema/form.def');
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43
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44 my %Context = (Compiler => $Compiler, Encoding => $Encoding);
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45
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46 $class->ProcessFile(URI::file->new_abs($File),URI::file->new_abs($CacheDir),\%Context);
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47
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48 $Compiler->Dispose;
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49
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50 return $Context{Forms};
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51 }
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52
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53 sub ProcessFile {
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54 my ($class,$uriFile,$uriCacheDir,$refContext) = @_;
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55
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56 return 1 if $refContext->{'Processed'}{$uriFile->as_string};
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57 $refContext->{'Processed'}{$uriFile->as_string} = 1;
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58
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59 my $Data;
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60 my $file = $uriFile->file;
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61 my $fnameCached = $file;
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62 $fnameCached =~ s/[\\\/:]+/_/g;
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63 $fnameCached .= '.cfm';
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64 $fnameCached = URI::file->new($fnameCached)->abs($uriCacheDir)->file;
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65
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66 if ( -e $fnameCached && -f $fnameCached && ( -M $file >= -M $fnameCached ) ) {
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67 $Data = retrieve($fnameCached);
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68 } else {
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69 my $Compiler = $refContext->{'Compiler'};
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70 local $/ = undef;
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71 open my $hfile,"<:encoding($refContext->{Encoding})",$file or die new Exception('Failed to open file',$file);
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72 $Data = $Compiler->Parse(<$hfile>);
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73 store($Data,$fnameCached);
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74 }
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75
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76
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77 my $uriDir = URI::file->new('./')->abs($uriFile);
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78
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79 my $needRebuild = 0;
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80
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81 foreach my $inc (list $Data->{_include}) {
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82 $needRebuild ||= $class->ProcessFile(URI::file->new($inc->{file_name})->abs($uriDir),$uriCacheDir,$refContext);
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83 }
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84
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85 foreach my $use (list $Data->{_use}) {
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86 $refContext->{Filters}{$use->{alias}} = { Class => join '', list $use->{mod_name} };
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87 $refContext->{Require}{$use->{mod_name}} = 1;
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88 }
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89
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90 foreach my $container (list $Data->{container}) {
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91 if ($container->{type} eq 'Form') {
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92 $class->ConstructForm($container,$refContext);
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93 } elsif ($container->{type} eq 'Format') {
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94 $class->ConstructFormat($container,$refContext);
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95 } elsif ($container->{type} eq 'Filter') {
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96 $class->ConstructFilter($container,$refContext);
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97 }
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98 }
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99 }
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100
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101 sub ProcessContainer {
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102 my ($class,$container,$refContext) = @_;
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103 }
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104
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105 sub ConstructForm {
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106 my ($class,$container,$refContext) = @_;
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107
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108 $container->{type} eq 'Form' or die new Exception("Unexpected container type");
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109
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110 not $refContext->{Forms}{$container->{name}} or die new Exception('The form is already exists',$container->{name});
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111
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112 my $Form = new Schema::Form(Name => $container->{name});
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113
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114 $Form->SetBody($class->ConstructGroup($container,$refContext));
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115
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116 $refContext->{Forms}{$Form->Name} = $Form;
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117 }
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118
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119 sub ConstructGroup {
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120 my($class,$container,$refContext) = @_;
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121
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122 my $Group = new Schema::Form::Container(
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123 Name => $container->{name},
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124 isMulti => ($container->{multi} ? 1 : 0)
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125 );
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126
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127 foreach my $child (list $container->{body}{container}) {
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128 my $obj;
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129 if ($child->{type} eq 'Group') {
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130 $obj = $class->ConstructGroup($child,$refContext);
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131 } else {
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132 $obj = $class->ConstructField($child,$refContext);
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133 }
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134 $Group->AddChild($obj);
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135 }
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136
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137 foreach my $filter (list $container->{expression}) {
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138 $Group->AddFilter($class->FilterInstance($filter,$refContext,$container->{name}));
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139 }
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140
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141 foreach my $attr (list $container->{body}{body_property}) {
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142 $Group->Attributes->{$attr->{complex_name}} = $class->ScalarExpression($attr->{expression},$container->{name});
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143 }
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144
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145 return $Group;
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146 }
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147
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148 sub ConstructField {
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149 my ($class,$container,$refContext) = @_;
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150
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151 my $Format = $refContext->{Formats}{$container->{type}} or die new Exception('An undefined format name', $container->{type});
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152
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153 my $Field = Schema::Form::Field->new(
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154 Name => $container->{name},
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155 isMulti => ($container->{multi} ? 1 : 0),
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156 Format => $Format
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157 );
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158
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159 foreach my $filter (list $container->{expression}) {
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160 $Field->AddFilter($class->FilterInstance($filter,$refContext,$container->{name}));
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161 }
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162
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163 foreach my $attr (list $container->{body}{body_property}) {
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164 $Field->Attributes->{ref $attr->{complex_name} ? join '', @{$attr->{complex_name}} : $attr->{complex_name}} = $class->ScalarExpression($attr->{expression},$container->{name});
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165 }
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166
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167 return $Field;
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168 }
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169
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170 sub FilterInstance {
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171 my ($class,$expr,$refContext,$where) = @_;
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172
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173 my $filter = $expr->{instance} or die new Exception('Invalid filter syntax',$where);
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174
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175 my $filterClass = $refContext->{Filters}{$filter->{name}}{Class} or die new Exception('Using undefined filter name',$filter->{name},$where);
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176
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177 my @Args = map { $class->ScalarExpression($_,$where) } list $filter->{expression};
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178
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179 my $Filter = Schema::Form::Filter->new(
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180 Name => $filter->{name},
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181 Class => $filterClass,
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182 Args => \@Args
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183 );
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184
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185 if ($refContext->{Filters}{$filter->{name}}{Attributes}) {
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186 while (my ($name,$value) = each %{$refContext->{Filters}{$filter->{name}}{Attributes}}) {
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187 $Filter->Attributes->{$name} = $value;
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188 }
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189 }
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190
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191 return $Filter;
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192 }
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193
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194 sub ScalarExpression {
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195 my ($class,$expr,$where) = @_;
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196
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197 my $val;
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198 if ($expr->{instance}) {
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199 $val = $expr->{instance}{name};
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200 } elsif ($expr->{string}) {
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201 $val = join '', list $expr->{string};
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202 $val =~ s/\\(.)/
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203 if ($1 eq '"' or $1 eq '\\') {
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204 $1;
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205 } else {
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206 "\\$1";
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207 }
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208 /ge;
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209 } elsif ($expr->{number}) {
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210 $val = join '', list $expr->{number};
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211 } else {
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212 die new Exception('Scalar expression required');
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213 }
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214
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215 return $val;
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216 }
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217
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218 sub ConstructFormat {
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219 my ($class,$container,$refContext) = @_;
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220
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221 my $Format = Schema::Form::Format->new (
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222 Name => $container->{name}
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223 );
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224
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225 foreach my $filter (list $container->{expression}) {
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226 $Format->AddFilter($class->FilterInstance($filter,$refContext,$container->{name}));
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227 }
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228
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229 foreach my $attr (list $container->{body}{body_property}) {
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230 $Format->Attributes->{ref $attr->{complex_name} ? join '', @{$attr->{complex_name}} : $attr->{complex_name}} = $class->ScalarExpression($attr->{expression},$container->{name});
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231 }
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232
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233 $refContext->{Formats}{$Format->Name} = $Format;
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234 }
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235
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236 sub ConstructFilter {
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237 my ($class,$container,$refContext) = @_;
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238
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239 foreach my $attr (list $container->{body}{body_property}) {
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240 $refContext->{Filters}{$container->{name}}{Attributes}{ref $attr->{complex_name} ? join '', @{$attr->{complex_name}} : $attr->{complex_name}} = $class->ScalarExpression($attr->{expression},$container->{name});
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241 }
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242 }
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243
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244 =pod
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245 Form schema -
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246
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247 Form instance -
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248
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249 =cut
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250
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251
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252 1;
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