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1
11
12 package org.eclipse.pde.internal.core;
13
14 import java.io.File  ;
15 import java.io.FileOutputStream ;
16 import java.io.IOException ;
17 import java.io.OutputStream ;
18 import java.io.OutputStreamWriter ;
19 import java.io.Writer ;
20
21 import org.w3c.dom.Document ;
22 import org.w3c.dom.NamedNodeMap ;
23 import org.w3c.dom.Node ;
24 import org.w3c.dom.NodeList ;
25
26
27 public class XMLPrintHandler {
28 public static final String XML_COMMENT_END_TAG = "-->"; public static final String XML_COMMENT_BEGIN_TAG = "<!--"; public static final String XML_HEAD = "<?xml version=\"1.0\" encoding=\""; public static final String XML_HEAD_END_TAG = "?>"; public static final String XML_DBL_QUOTES = "\""; public static final String XML_SPACE = " "; public static final String XML_BEGIN_TAG = "<"; public static final String XML_END_TAG = ">"; public static final String XML_EQUAL = "="; public static final String XML_SLASH = "/"; public static final String XML_INDENT = " ";
41
42
46 public static String generateIndent(int level) {
47 StringBuffer buffer = new StringBuffer ();
48 for (int i = 0; i < level; i++) {
49 buffer.append(XML_INDENT);
50 }
51 return buffer.toString();
52 }
53
54 public static void printBeginElement(Writer xmlWriter, String elementString, String indent, boolean terminate) throws IOException {
55 StringBuffer temp = new StringBuffer (indent);
56 temp.append(XML_BEGIN_TAG);
57 temp.append(elementString);
58 if (terminate)
59 temp.append(XML_SLASH);
60 temp.append(XML_END_TAG);
61 temp.append("\n"); xmlWriter.write(temp.toString());
63
64 }
65
66 public static void printEndElement(Writer xmlWriter, String elementString, String indent) throws IOException {
67 StringBuffer temp = new StringBuffer (indent);
68 temp.append(XML_BEGIN_TAG);
69 temp.append(XML_SLASH).append(elementString).append(XML_END_TAG).append("\n"); xmlWriter.write(temp.toString());
71
72 }
73
74 public static void printText(Writer xmlWriter, String text, String indent) throws IOException {
75 StringBuffer temp = new StringBuffer (indent);
76 temp.append(encode(text).toString());
77 temp.append("\n"); xmlWriter.write(temp.toString());
79 }
80
81 public static void printComment(Writer xmlWriter, String comment, String indent)throws IOException {
82 StringBuffer temp = new StringBuffer ("\n"); temp.append(indent);
84 temp.append(XML_COMMENT_BEGIN_TAG);
85 temp.append(encode(comment).toString()).append(XML_COMMENT_END_TAG).append("\n\n"); xmlWriter.write(temp.toString());
87 }
88
89 public static void printHead(Writer xmlWriter, String encoding) throws IOException {
90 StringBuffer temp = new StringBuffer (XML_HEAD);
91 temp.append(encoding).append(XML_DBL_QUOTES).append(XML_HEAD_END_TAG).append("\n"); xmlWriter.write(temp.toString());
93 }
94
95 public static String wrapAttributeForPrint(String attribute, String value) throws IOException {
96 StringBuffer temp = new StringBuffer (XML_SPACE);
97 temp.append(attribute).append(XML_EQUAL).append(XML_DBL_QUOTES)
98 .append(encode(value).toString()).append(XML_DBL_QUOTES);
99 return temp.toString();
100 }
101
102 public static String wrapAttribute(String attribute, String value) {
103 StringBuffer buffer = new StringBuffer (XML_SPACE);
104 buffer.append(attribute);
105 buffer.append(XML_EQUAL);
106 buffer.append(XML_DBL_QUOTES);
107 buffer.append(value);
108 buffer.append(XML_DBL_QUOTES);
109 return buffer.toString();
110 }
111
112 public static void printNode(Writer xmlWriter, Node node,String encoding, String indent) throws IOException {
113 if (node == null) {
114 return;
115 }
116
117 switch (node.getNodeType()) {
118 case Node.DOCUMENT_NODE: {
119 printHead(xmlWriter,encoding);
120 printNode(xmlWriter, ((Document ) node).getDocumentElement(),encoding, indent);
121 break;
122 }
123 case Node.ELEMENT_NODE: {
124 StringBuffer tempElementString = new StringBuffer (node.getNodeName());
126 NamedNodeMap attributeList = node.getAttributes();
127 if ( attributeList != null ) {
128 for(int i= 0; i <attributeList.getLength();i++){
129 Node attribute = attributeList.item(i);
130 tempElementString.append(wrapAttributeForPrint(attribute.getNodeName(),attribute.getNodeValue()));
131 }
132 }
133
134 NodeList childNodes = node.getChildNodes();
136 int length = childNodes.getLength();
137 printBeginElement(xmlWriter,tempElementString.toString(), indent, length == 0);
138
139 for (int i = 0; i < length; i++)
140 printNode(xmlWriter, childNodes.item(i),encoding, indent + "\t");
142 if (length > 0)
143 printEndElement(xmlWriter,node.getNodeName(), indent);
144 break;
145 }
146
147 case Node.TEXT_NODE: {
148 xmlWriter.write(encode(node.getNodeValue()).toString());
149 break;
150 }
151 default: {
152 throw new UnsupportedOperationException ("Unsupported XML Node Type."); }
154 }
155
156 }
157
158 public static StringBuffer encode(String value) {
159 StringBuffer buf = new StringBuffer ();
160 for (int i = 0; i < value.length(); i++) {
161 char c = value.charAt(i);
162 switch (c) {
163 case '&' :
164 buf.append("&"); break;
166 case '<' :
167 buf.append("<"); break;
169 case '>' :
170 buf.append(">"); break;
172 case '\'' :
173 buf.append("'"); break;
175 case '\"' :
176 buf.append("""); break;
178 default :
179 buf.append(c);
180 break;
181 }
182 }
183 return buf;
184 }
185
186 public static void writeFile(Document doc, File file) throws IOException {
187 Writer writer = null;
188 OutputStream out = null;
189 try {
190 out = new FileOutputStream (file);
191 writer = new OutputStreamWriter (out, "UTF-8"); XMLPrintHandler.printNode(writer, doc, "UTF-8", ""); } finally {
194 try {
195 if (writer != null)
196 writer.close();
197 } catch (IOException e1) {
198 }
199 try {
200 if (out != null)
201 out.close();
202 } catch (IOException e1) {
203 }
204 }
205 }
206
207 }
208 |
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