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recreate repository without any libs for lightweight repository
author Frank Benoit <benoit@tionex.de>
date Sat, 20 Oct 2007 18:07:18 +0200
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a5576806d36d recreate repository without any libs for lightweight repository
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1 /**
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2 * Author: Frank Benoit
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3 * License: Public domain
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4 * File type: D programming language
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5 */
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6 module org.freedesktop.dbus.tool.XmlSupport;
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7
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8 import tango.core.Array;
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9 import tango.io.FileConduit;
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10
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11 import tango.text.Util;
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12 import tango.util.collection.LinkSeq;
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13 import mango.xml.sax.DefaultSAXHandler;
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14 import mango.xml.sax.parser.teqXML;
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15
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16 class Element {
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17 char[] mName;
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18 Element[] mChilds;
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19 char[][char[]] mAttributes;
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20 char[] mText;
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21 Element mParent;
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22
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23 public this( char[] aName, Element aParent ){
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24 mName = aName.dup;
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25 mParent = aParent;
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26 mText = "";
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27 if( aParent ){
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28 aParent.addChild( this );
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29 }
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30 }
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31
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32 protected void addChild( Element aChild ){
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33 mChilds ~= aChild;
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34 }
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35 public Element createChildElement( char[] aName ){
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36 Element result = new Element( aName, this );
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37 return result;
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38 }
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39 public void completeChildElement( char[] aName, Element aChild ){
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40 }
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41 public void completeYourself(){
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42 mText = Text.trim( mText );
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43 }
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44 public char[] getText(){
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45 return mText;
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46 }
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47 public char[] getName(){
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48 return mName;
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49 }
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50 public void setText( char[] aText ){
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51 mText = aText.dup;
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52 }
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53 public void addAttribute(char[] key, char[] value){
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54 mAttributes[ key.dup ] = value.dup;
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55 }
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56 public bool hasAttribute( char[] aName ){
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57 return cast(bool)( aName in mAttributes );
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58 }
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59 public bool hasChild( char[] aName ){
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60 foreach( Element child; mChilds ){
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61 if( child.mName == aName ){
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62 return true;
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63 }
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64 }
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65
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66 return false;
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67 }
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68 public Element tryGetChild( char[] aName ){
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69 foreach( Element child; mChilds ){
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70 if( child.mName == aName ){
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71 return child;
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72 }
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73 }
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74
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75 return null;
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76 }
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77 public Element getChild( char[] aName ){
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78 Element result = tryGetChild( aName );
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79 check( result !is null, "Element.getChild mName=%0, aName=%1", mName, aName );
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80 return result;
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81 }
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82 public Element[] getChilds(){
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83 return mChilds.dup;
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84 }
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85 public Element[] getChilds( char[] aName ){
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86 Element[] result;
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87 foreach( Element child; mChilds ){
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88 if( child.mName == aName ){
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89 result ~= child;
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90 }
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91 }
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92
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93 return result;
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94 }
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95 public Element tryFindChild( bool delegate( Element aChild ) aDg ){
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96 foreach( Element child; mChilds ){
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97 if( aDg( child ) ){
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98 return child;
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99 }
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100 }
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101
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102 return null;
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103 }
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104 public Element findChild( bool delegate( Element aChild ) aDg ){
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105 Element result = tryFindChild( aDg );
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106 check( result !is null, "Element.findChild mName=%0, not found", mName );
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107 return result;
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108 }
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109 public char[] getAttribute( char[] aKey ){
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110 check( cast(bool)(aKey in mAttributes), "Element %0 does not contain the attribute %1", mName, aKey );
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111 return mAttributes[ aKey ].dup;
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112 }
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113
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114 public void checkAllowedChilds( char[][] names... ){
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115 foreach( Element child; mChilds ){
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116 check( tango.core.Array.find( names, child.mName ) != names.length,
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117 "in element %0, a not allowed child node name exist %1", mName, child.mName );
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118 }
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119 }
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120 }
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121
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122 class Document {
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123 private Element mElement;
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124 public Element createRootElement( char[] aName ){
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125 mElement = new Element( aName, null );
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126 return mElement;
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127 }
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128 public void completeRootElement( char[] aName, Element aChild ){
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129 }
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130 public void setRoot( Element aRoot ){
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131 mElement = aRoot;
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132 }
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133 public Element getRoot(){
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134 return mElement;
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135 }
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136 }
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137
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138 public class DomConstructionSaxHandler : DefaultSAXHandler!( char ) {
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139 Document mDocument;
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140 alias LinkSeq!(Element) TElementList;
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141 TElementList mElements;
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142
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143 public this( Document aDocument ){
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144 mElements = new TElementList();
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145 mDocument = aDocument;
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146 }
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147 void startDocument() {
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148 //Stdout( "startDocument" ).newline;
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149 }
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150 void endDocument() {
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151 //Stdout( "endDocument" ).newline;
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152 }
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153 void processingInstruction(char[] target, char[] data) {
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154 //Stdout( "processingInstruction" ).newline;
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155 }
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156 void startElement(char[] name) {
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157 if( mElements.size() > 0 ){
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158 //Stdout.format( "startElement {0} {1} ", name.utf8, mElements.size() ).newline;
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159 Element el = mElements.head().createChildElement( name );
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160 mElements.prepend( el );
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161 }
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162 else{
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163 //Stdout( "startRootElement" ~ name.utf8 ).newline;
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164 Element el = mDocument.createRootElement( name );
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165 mElements.prepend( el );
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166 }
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167
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168 //Stdout( "startElement" ).newline;
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169 }
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170 void addAttribute(char[] key, char[] value) {
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171 Element el = mElements.head();
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172 el.addAttribute( key, value );
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173 //Stdout( "addAttribute" ).newline;
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174 }
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175 void endElement(char[] name) {
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176 Element child = mElements.take();
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177 child.completeYourself();
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178 if( mElements.size() > 0 ){
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179 Element el = mElements.head();
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180 el.completeChildElement( name, child );
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181 }
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182 else{
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183 mDocument.completeRootElement( name, child );
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184 }
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185
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186 //Stdout( "endElement" ).newline;
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187 }
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188 void comment(char[] text) {
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189 //Stdout( "comment" ).newline;
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190 }
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191 }
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192
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193 void check( bool aCondition, char[][] aMessage ... ){
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194 if( !aCondition ){
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195 char[200] buf;
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196 throw new Exception( layout( buf, aMessage ));
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197 }
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198 }
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199
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200 Element parse(char[] aFileName){
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201 auto parser = new XMLReader!(char) ();
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202 auto doc = new Document();
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203 auto handler = new DomConstructionSaxHandler( doc );
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204 parser.parse( new FileConduit( aFileName ), handler);
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205 return doc.getRoot();
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206 }
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207
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208
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209