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1 package com.quikj.server.framework;
2
3 import org.w3c.dom.*;
5
6
7 public class AceXMLHelper
8 {
9
10
18 public static String  processXMLElement(Node node,
19 String node_name,
20 String attribute_name)
21 throws AceException
22 {
23 if (node.getNodeType() != Node.ELEMENT_NODE)
24 {
25
27 throw new AceException("Node element type not a node");
28 }
29
30 if (node.getNodeName().equals(node_name) == false)
31 {
32
34 throw new AceException("Node name - "
35 + node_name
36 + " does not match, received - "
37 + node.getNodeName());
38 }
39
40 return getXMLAttribute(node, attribute_name);
41 }
42
43
44 public static String getXMLAttribute(Node node,
45 String attribute_name)
46 throws AceException
47 {
48 NamedNodeMap attribs = node.getAttributes();
50 if (attribs.getLength() <= 0)
51 {
52 throw new AceException("Node does not have any attributes");
54 }
55
56 Node attr = attribs.item(0);
57 if (attr.getNodeName().equals(attribute_name) == false)
58 {
59
61 throw new AceException("Attribute name -"
63 + attribute_name
64 + " does not match, received - "
65 + attr.getNodeName());
66 }
67
68 return new String (attr.getNodeValue());
69 }
70
71 public static String [] getXMLAttributes(Node node, String [] attributes)
72 {
73 NamedNodeMap attribs = node.getAttributes();
74 int length = attribs.getLength();
75
76 String [] ret = new String [attributes.length];
77 for (int i = 0; i < length; i++)
78 {
79 Node attr = attribs.item(i);
80 String name = attr.getNodeName();
81
82 for (int j = 0; j < attributes.length; j++)
83 {
84 if (attributes[j].equals(name) == true)
85 {
86 ret[j] = new String (attr.getNodeValue());
87 break;
88 }
89 }
90 }
91
92 return ret;
93 }
94
95 public static String encodeXMLString(java.lang.String input)
96 {
97 char[] str = input.toCharArray();
98 StringBuffer buffer = new StringBuffer ();
99
100 for (int i = 0; i < str.length; i++)
101 {
102 switch (str[i])
103 {
104 case '<':
105 buffer.append("<");
106 break;
107
108 case '>':
109 buffer.append(">");
110 break;
111
112 case '&':
113 buffer.append("&");
114 break;
115
116 case '\'':
117 buffer.append("'");
118 break;
119
120 case '\"':
121 buffer.append(""");
122 break;
123
124 default:
125 int intv = str[i];
126 if (intv > 127)
127 {
128 buffer.append("&#x" + Integer.toHexString(intv) + ";");
129 }
130 else
131 {
132 buffer.append(str[i]);
133 }
134 }
135 }
136
137 return buffer.toString();
138 }
139
140
141 public static String decodeXMLString(String text)
142 {
143 StringBuffer buffer = new StringBuffer ();
144 char[] str = text.toCharArray();
145
146 for (int i = 0; i < str.length; i++)
147 {
148 if (str[i] == '&')
149 {
150 StringBuffer sbuffer = new StringBuffer ();
151
152 int index = text.indexOf(';', i);
154 if (index < 0) return null;
155
156 String escape = text.substring(i, index);
157
158 try
159 {
160 if (escape.equals(">") == true)
161 {
162 buffer.append('>');
163 }
164 else if (escape.equals("<") == true)
165 {
166 buffer.append('<');
167 }
168 else if (escape.equals("&") == true)
169 {
170 buffer.append('&');
171 }
172 else if (escape.equals("&apos") == true)
173 {
174 buffer.append("'");
175 }
176 else if (escape.equals(""") == true)
177 {
178 buffer.append('"');
179 }
180 else if (escape.startsWith("&#"))
181 {
182 String value = escape.substring(2);
183
184 if (value.startsWith("x"))
185 {
186 value = "0" + value;
187 }
188 char c = (char)(Integer.decode(value).intValue());
189 buffer.append(c);
190 }
191 else
192 {
193 return null;
194 }
195 }
196 catch (NumberFormatException ex)
197 {
198 return null;
199 }
200
201 i = index;
202 }
203 else
204 {
205 buffer.append(str[i]);
206 }
207 }
208
209 return buffer.toString();
210 }
211
212 public static void main (String [] args)
213 {
214 String str = "á.";
215 String decoded_str = AceXMLHelper.decodeXMLString(str);
216 System.out.println (decoded_str);
217 }
218
219 }
220
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