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1466
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1 package goodjava.xml;
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2
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3 import java.util.Map;
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4
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5
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6 public final class XmlElement {
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7 public final String name;
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8 public final Map<String,String> attributes;
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1790
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9 private Object content = null;
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1791
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10 private XmlElement parent = null;
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11
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12 public XmlElement(String name,Map<String,String> attributes) {
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13 this.name = name;
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14 this.attributes = attributes;
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15 this.content = null;
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16 }
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17
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18 public XmlElement getParent() {
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19 return parent;
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20 }
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21
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22 public Object getContent() {
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23 return content;
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24 }
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25
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26 public void removeContent() {
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27 content = null;
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28 }
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29
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30 public void setContent(String content) {
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31 if( content == null )
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1810
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32 throw new IllegalArgumentException("content of '"+name+"' can't be null");
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33 this.content = content;
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34 }
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35
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36 public void setContent(XmlElement[] content) {
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37 if( content == null )
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1810
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38 throw new IllegalArgumentException("content of '"+name+"' can't be null");
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39 this.content = content;
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40 for( XmlElement el : content ) {
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41 el.parent = this;
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42 }
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43 }
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44
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45 @Override public String toString() {
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46 StringBuilder sb = new StringBuilder();
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47 toString(sb,0);
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48 return sb.toString();
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49 }
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50
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51 void toString(StringBuilder sb,int indented) {
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52 indent(sb,indented);
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53 sb.append( '<' );
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54 sb.append( name );
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55 for( Map.Entry<String,String> attribute : attributes.entrySet() ) {
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56 sb.append( ' ' );
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57 sb.append( attribute.getKey() );
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58 sb.append( "=\"" );
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59 sb.append( encodeAttr(attribute.getValue()) );
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60 sb.append( '"' );
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61 }
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62 if( content == null ) {
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63 sb.append( "/>\n" );
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64 } else if( content instanceof String ) {
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65 sb.append( '>' );
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66 String s = (String)content;
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67 sb.append( encode(s) );
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68 closeTag(sb,name);
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69 } else {
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70 sb.append( '>' );
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71 XmlElement[] elements = (XmlElement[])content;
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72 sb.append( '\n' );
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73 for( XmlElement element : elements ) {
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74 element.toString(sb,indented+1);
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75 }
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76 indent(sb,indented);
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77 closeTag(sb,name);
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78 }
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79 }
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80
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81 private static void closeTag(StringBuilder sb,String name) {
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82 sb.append( "</" );
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83 sb.append( name );
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84 sb.append( ">\n" );
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85 }
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86
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87 private static void indent(StringBuilder sb,int indented) {
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88 for( int i=0; i<indented; i++ ) {
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89 sb.append('\t');
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90 }
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91 }
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92
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93 public static String encode(String s) {
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94 final char[] a = s.toCharArray();
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95 StringBuilder buf = new StringBuilder();
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96 for( char c : a ) {
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97 switch(c) {
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98 case '&':
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99 buf.append("&");
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100 break;
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101 case '<':
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102 buf.append("<");
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103 break;
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104 case '>':
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105 buf.append(">");
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106 break;
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107 case '"':
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108 buf.append(""");
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109 break;
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110 case '\'':
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111 buf.append("'");
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112 break;
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113 default:
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114 buf.append(c);
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115 }
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116 }
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117 return buf.toString();
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118 }
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119
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120 public static String encodeAttr(String s) {
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121 final char[] a = s.toCharArray();
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122 StringBuilder buf = new StringBuilder();
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123 for( char c : a ) {
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124 switch(c) {
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125 case '&':
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126 buf.append("&");
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127 break;
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128 case '<':
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129 buf.append("<");
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130 break;
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131 case '>':
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132 buf.append(">");
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133 break;
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134 case '"':
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135 buf.append(""");
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136 break;
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137 case '\'':
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138 buf.append("'");
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139 break;
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140 case '\n':
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141 buf.append(" ");
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142 break;
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143 case '\r':
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144 buf.append(" ");
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145 break;
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146 default:
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147 buf.append(c);
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148 }
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149 }
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150 return buf.toString();
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151 }
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152
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153 }
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