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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a> |
| <FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a> |
| <FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a> |
| <FONT color="green">017</FONT> */<a name="line.17"></a> |
| <FONT color="green">018</FONT> /*<a name="line.18"></a> |
| <FONT color="green">019</FONT> * $Id: NamespaceMappings.java 1225444 2011-12-29 05:52:39Z mrglavas $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xml.serializer;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.util.Enumeration;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.util.Hashtable;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.xml.sax.ContentHandler;<a name="line.26"></a> |
| <FONT color="green">027</FONT> import org.xml.sax.SAXException;<a name="line.27"></a> |
| <FONT color="green">028</FONT> <a name="line.28"></a> |
| <FONT color="green">029</FONT> /**<a name="line.29"></a> |
| <FONT color="green">030</FONT> * This class keeps track of the currently defined namespaces. Conceptually the<a name="line.30"></a> |
| <FONT color="green">031</FONT> * prefix/uri/depth triplets are pushed on a stack pushed on a stack. The depth<a name="line.31"></a> |
| <FONT color="green">032</FONT> * indicates the nesting depth of the element for which the mapping was made.<a name="line.32"></a> |
| <FONT color="green">033</FONT> * <a name="line.33"></a> |
| <FONT color="green">034</FONT> * <p>For example:<a name="line.34"></a> |
| <FONT color="green">035</FONT> * <pre><a name="line.35"></a> |
| <FONT color="green">036</FONT> * <chapter xmlns:p1="def"><a name="line.36"></a> |
| <FONT color="green">037</FONT> * <paragraph xmlns:p2="ghi"><a name="line.37"></a> |
| <FONT color="green">038</FONT> * <sentance xmlns:p3="jkl"><a name="line.38"></a> |
| <FONT color="green">039</FONT> * </sentance><a name="line.39"></a> |
| <FONT color="green">040</FONT> * </paragraph><a name="line.40"></a> |
| <FONT color="green">041</FONT> * <paragraph xlmns:p4="mno"><a name="line.41"></a> |
| <FONT color="green">042</FONT> * </paragraph><a name="line.42"></a> |
| <FONT color="green">043</FONT> * </chapter><a name="line.43"></a> |
| <FONT color="green">044</FONT> * </pre><a name="line.44"></a> |
| <FONT color="green">045</FONT> * <a name="line.45"></a> |
| <FONT color="green">046</FONT> * When the <chapter> element is encounted the prefix "p1" associated with uri<a name="line.46"></a> |
| <FONT color="green">047</FONT> * "def" is pushed on the stack with depth 1.<a name="line.47"></a> |
| <FONT color="green">048</FONT> * When the first <paragraph> is encountered "p2" and "ghi" are pushed with<a name="line.48"></a> |
| <FONT color="green">049</FONT> * depth 2.<a name="line.49"></a> |
| <FONT color="green">050</FONT> * When the <sentance> is encountered "p3" and "jkl" are pushed with depth 3.<a name="line.50"></a> |
| <FONT color="green">051</FONT> * When </sentance> occurs the popNamespaces(3) will pop "p3"/"jkl" off the<a name="line.51"></a> |
| <FONT color="green">052</FONT> * stack. Of course popNamespaces(2) would pop anything with depth 2 or<a name="line.52"></a> |
| <FONT color="green">053</FONT> * greater.<a name="line.53"></a> |
| <FONT color="green">054</FONT> * <a name="line.54"></a> |
| <FONT color="green">055</FONT> * So prefix/uri pairs are pushed and poped off the stack as elements are<a name="line.55"></a> |
| <FONT color="green">056</FONT> * processed. At any given moment of processing the currently visible prefixes<a name="line.56"></a> |
| <FONT color="green">057</FONT> * are on the stack and a prefix can be found given a uri, or a uri can be found<a name="line.57"></a> |
| <FONT color="green">058</FONT> * given a prefix.<a name="line.58"></a> |
| <FONT color="green">059</FONT> *<a name="line.59"></a> |
| <FONT color="green">060</FONT> * This class is intended for internal use only. However, it is made public because<a name="line.60"></a> |
| <FONT color="green">061</FONT> * other packages require it. <a name="line.61"></a> |
| <FONT color="green">062</FONT> * @xsl.usage internal<a name="line.62"></a> |
| <FONT color="green">063</FONT> */<a name="line.63"></a> |
| <FONT color="green">064</FONT> public class NamespaceMappings<a name="line.64"></a> |
| <FONT color="green">065</FONT> {<a name="line.65"></a> |
| <FONT color="green">066</FONT> /**<a name="line.66"></a> |
| <FONT color="green">067</FONT> * This member is continually incremented when new prefixes need to be<a name="line.67"></a> |
| <FONT color="green">068</FONT> * generated. ("ns0" "ns1" ...)<a name="line.68"></a> |
| <FONT color="green">069</FONT> */<a name="line.69"></a> |
| <FONT color="green">070</FONT> private int count = 0;<a name="line.70"></a> |
| <FONT color="green">071</FONT> <a name="line.71"></a> |
| <FONT color="green">072</FONT> /**<a name="line.72"></a> |
| <FONT color="green">073</FONT> * Each entry (prefix) in this hashtable points to a Stack of URIs<a name="line.73"></a> |
| <FONT color="green">074</FONT> * This table maps a prefix (String) to a Stack of NamespaceNodes.<a name="line.74"></a> |
| <FONT color="green">075</FONT> * All Namespace nodes in that retrieved stack have the same prefix,<a name="line.75"></a> |
| <FONT color="green">076</FONT> * though possibly different URI's or depths. Such a stack must have<a name="line.76"></a> |
| <FONT color="green">077</FONT> * mappings at deeper depths push later on such a stack. Mappings pushed<a name="line.77"></a> |
| <FONT color="green">078</FONT> * earlier on the stack will have smaller values for MappingRecord.m_declarationDepth.<a name="line.78"></a> |
| <FONT color="green">079</FONT> */<a name="line.79"></a> |
| <FONT color="green">080</FONT> private Hashtable m_namespaces = new Hashtable();<a name="line.80"></a> |
| <FONT color="green">081</FONT> <a name="line.81"></a> |
| <FONT color="green">082</FONT> /** <a name="line.82"></a> |
| <FONT color="green">083</FONT> * This stack is used as a convenience.<a name="line.83"></a> |
| <FONT color="green">084</FONT> * It contains the pushed NamespaceNodes (shallowest<a name="line.84"></a> |
| <FONT color="green">085</FONT> * to deepest) and is used to delete NamespaceNodes <a name="line.85"></a> |
| <FONT color="green">086</FONT> * when leaving the current element depth <a name="line.86"></a> |
| <FONT color="green">087</FONT> * to returning to the parent. The mappings of the deepest<a name="line.87"></a> |
| <FONT color="green">088</FONT> * depth can be popped of the top and the same node<a name="line.88"></a> |
| <FONT color="green">089</FONT> * can be removed from the appropriate prefix stack.<a name="line.89"></a> |
| <FONT color="green">090</FONT> * <a name="line.90"></a> |
| <FONT color="green">091</FONT> * All prefixes pushed at the current depth can be <a name="line.91"></a> |
| <FONT color="green">092</FONT> * removed at the same time by using this stack to<a name="line.92"></a> |
| <FONT color="green">093</FONT> * ensure prefix/uri map scopes are closed correctly.<a name="line.93"></a> |
| <FONT color="green">094</FONT> */<a name="line.94"></a> |
| <FONT color="green">095</FONT> private Stack m_nodeStack = new Stack();<a name="line.95"></a> |
| <FONT color="green">096</FONT> <a name="line.96"></a> |
| <FONT color="green">097</FONT> private static final String EMPTYSTRING = "";<a name="line.97"></a> |
| <FONT color="green">098</FONT> private static final String XML_PREFIX = "xml"; // was "xmlns"<a name="line.98"></a> |
| <FONT color="green">099</FONT> <a name="line.99"></a> |
| <FONT color="green">100</FONT> /**<a name="line.100"></a> |
| <FONT color="green">101</FONT> * Default constructor<a name="line.101"></a> |
| <FONT color="green">102</FONT> * @see java.lang.Object#Object()<a name="line.102"></a> |
| <FONT color="green">103</FONT> */<a name="line.103"></a> |
| <FONT color="green">104</FONT> public NamespaceMappings()<a name="line.104"></a> |
| <FONT color="green">105</FONT> {<a name="line.105"></a> |
| <FONT color="green">106</FONT> initNamespaces();<a name="line.106"></a> |
| <FONT color="green">107</FONT> }<a name="line.107"></a> |
| <FONT color="green">108</FONT> <a name="line.108"></a> |
| <FONT color="green">109</FONT> /**<a name="line.109"></a> |
| <FONT color="green">110</FONT> * This method initializes the namespace object with appropriate stacks<a name="line.110"></a> |
| <FONT color="green">111</FONT> * and predefines a few prefix/uri pairs which always exist.<a name="line.111"></a> |
| <FONT color="green">112</FONT> */<a name="line.112"></a> |
| <FONT color="green">113</FONT> private void initNamespaces()<a name="line.113"></a> |
| <FONT color="green">114</FONT> {<a name="line.114"></a> |
| <FONT color="green">115</FONT> // The initial prefix mappings will never be deleted because they are at element depth -1 <a name="line.115"></a> |
| <FONT color="green">116</FONT> // (a kludge)<a name="line.116"></a> |
| <FONT color="green">117</FONT> <a name="line.117"></a> |
| <FONT color="green">118</FONT> // Define the default namespace (initially maps to "" uri)<a name="line.118"></a> |
| <FONT color="green">119</FONT> Stack stack;<a name="line.119"></a> |
| <FONT color="green">120</FONT> MappingRecord nn;<a name="line.120"></a> |
| <FONT color="green">121</FONT> nn = new MappingRecord(EMPTYSTRING, EMPTYSTRING, -1);<a name="line.121"></a> |
| <FONT color="green">122</FONT> stack = createPrefixStack(EMPTYSTRING);<a name="line.122"></a> |
| <FONT color="green">123</FONT> stack.push(nn);<a name="line.123"></a> |
| <FONT color="green">124</FONT> <a name="line.124"></a> |
| <FONT color="green">125</FONT> // define "xml" namespace<a name="line.125"></a> |
| <FONT color="green">126</FONT> nn = new MappingRecord(XML_PREFIX, "http://www.w3.org/XML/1998/namespace", -1);<a name="line.126"></a> |
| <FONT color="green">127</FONT> stack = createPrefixStack(XML_PREFIX);<a name="line.127"></a> |
| <FONT color="green">128</FONT> stack.push(nn);<a name="line.128"></a> |
| <FONT color="green">129</FONT> }<a name="line.129"></a> |
| <FONT color="green">130</FONT> <a name="line.130"></a> |
| <FONT color="green">131</FONT> /**<a name="line.131"></a> |
| <FONT color="green">132</FONT> * Use a namespace prefix to lookup a namespace URI.<a name="line.132"></a> |
| <FONT color="green">133</FONT> * <a name="line.133"></a> |
| <FONT color="green">134</FONT> * @param prefix String the prefix of the namespace<a name="line.134"></a> |
| <FONT color="green">135</FONT> * @return the URI corresponding to the prefix, returns ""<a name="line.135"></a> |
| <FONT color="green">136</FONT> * if there is no visible mapping.<a name="line.136"></a> |
| <FONT color="green">137</FONT> */<a name="line.137"></a> |
| <FONT color="green">138</FONT> public String lookupNamespace(String prefix)<a name="line.138"></a> |
| <FONT color="green">139</FONT> {<a name="line.139"></a> |
| <FONT color="green">140</FONT> String uri = null;<a name="line.140"></a> |
| <FONT color="green">141</FONT> final Stack stack = getPrefixStack(prefix);<a name="line.141"></a> |
| <FONT color="green">142</FONT> if (stack != null && !stack.isEmpty()) {<a name="line.142"></a> |
| <FONT color="green">143</FONT> uri = ((MappingRecord) stack.peek()).m_uri;<a name="line.143"></a> |
| <FONT color="green">144</FONT> }<a name="line.144"></a> |
| <FONT color="green">145</FONT> if (uri == null)<a name="line.145"></a> |
| <FONT color="green">146</FONT> uri = EMPTYSTRING;<a name="line.146"></a> |
| <FONT color="green">147</FONT> return uri;<a name="line.147"></a> |
| <FONT color="green">148</FONT> }<a name="line.148"></a> |
| <FONT color="green">149</FONT> <a name="line.149"></a> |
| <FONT color="green">150</FONT> <a name="line.150"></a> |
| <FONT color="green">151</FONT> MappingRecord getMappingFromPrefix(String prefix) {<a name="line.151"></a> |
| <FONT color="green">152</FONT> final Stack stack = (Stack) m_namespaces.get(prefix);<a name="line.152"></a> |
| <FONT color="green">153</FONT> return stack != null && !stack.isEmpty() ? <a name="line.153"></a> |
| <FONT color="green">154</FONT> ((MappingRecord) stack.peek()) : null;<a name="line.154"></a> |
| <FONT color="green">155</FONT> }<a name="line.155"></a> |
| <FONT color="green">156</FONT> <a name="line.156"></a> |
| <FONT color="green">157</FONT> /**<a name="line.157"></a> |
| <FONT color="green">158</FONT> * Given a namespace uri, and the namespaces mappings for the <a name="line.158"></a> |
| <FONT color="green">159</FONT> * current element, return the current prefix for that uri.<a name="line.159"></a> |
| <FONT color="green">160</FONT> * <a name="line.160"></a> |
| <FONT color="green">161</FONT> * @param uri the namespace URI to be search for<a name="line.161"></a> |
| <FONT color="green">162</FONT> * @return an existing prefix that maps to the given URI, null if no prefix<a name="line.162"></a> |
| <FONT color="green">163</FONT> * maps to the given namespace URI.<a name="line.163"></a> |
| <FONT color="green">164</FONT> */<a name="line.164"></a> |
| <FONT color="green">165</FONT> public String lookupPrefix(String uri)<a name="line.165"></a> |
| <FONT color="green">166</FONT> {<a name="line.166"></a> |
| <FONT color="green">167</FONT> String foundPrefix = null;<a name="line.167"></a> |
| <FONT color="green">168</FONT> Enumeration prefixes = m_namespaces.keys();<a name="line.168"></a> |
| <FONT color="green">169</FONT> while (prefixes.hasMoreElements())<a name="line.169"></a> |
| <FONT color="green">170</FONT> {<a name="line.170"></a> |
| <FONT color="green">171</FONT> String prefix = (String) prefixes.nextElement();<a name="line.171"></a> |
| <FONT color="green">172</FONT> String uri2 = lookupNamespace(prefix);<a name="line.172"></a> |
| <FONT color="green">173</FONT> if (uri2 != null && uri2.equals(uri))<a name="line.173"></a> |
| <FONT color="green">174</FONT> {<a name="line.174"></a> |
| <FONT color="green">175</FONT> foundPrefix = prefix;<a name="line.175"></a> |
| <FONT color="green">176</FONT> break;<a name="line.176"></a> |
| <FONT color="green">177</FONT> }<a name="line.177"></a> |
| <FONT color="green">178</FONT> }<a name="line.178"></a> |
| <FONT color="green">179</FONT> return foundPrefix;<a name="line.179"></a> |
| <FONT color="green">180</FONT> }<a name="line.180"></a> |
| <FONT color="green">181</FONT> <a name="line.181"></a> |
| <FONT color="green">182</FONT> MappingRecord getMappingFromURI(String uri)<a name="line.182"></a> |
| <FONT color="green">183</FONT> {<a name="line.183"></a> |
| <FONT color="green">184</FONT> MappingRecord foundMap = null;<a name="line.184"></a> |
| <FONT color="green">185</FONT> Enumeration prefixes = m_namespaces.keys();<a name="line.185"></a> |
| <FONT color="green">186</FONT> while (prefixes.hasMoreElements())<a name="line.186"></a> |
| <FONT color="green">187</FONT> {<a name="line.187"></a> |
| <FONT color="green">188</FONT> String prefix = (String) prefixes.nextElement();<a name="line.188"></a> |
| <FONT color="green">189</FONT> MappingRecord map2 = getMappingFromPrefix(prefix);<a name="line.189"></a> |
| <FONT color="green">190</FONT> if (map2 != null && (map2.m_uri).equals(uri))<a name="line.190"></a> |
| <FONT color="green">191</FONT> {<a name="line.191"></a> |
| <FONT color="green">192</FONT> foundMap = map2;<a name="line.192"></a> |
| <FONT color="green">193</FONT> break;<a name="line.193"></a> |
| <FONT color="green">194</FONT> }<a name="line.194"></a> |
| <FONT color="green">195</FONT> }<a name="line.195"></a> |
| <FONT color="green">196</FONT> return foundMap;<a name="line.196"></a> |
| <FONT color="green">197</FONT> }<a name="line.197"></a> |
| <FONT color="green">198</FONT> <a name="line.198"></a> |
| <FONT color="green">199</FONT> /**<a name="line.199"></a> |
| <FONT color="green">200</FONT> * Undeclare the namespace that is currently pointed to by a given prefix<a name="line.200"></a> |
| <FONT color="green">201</FONT> */<a name="line.201"></a> |
| <FONT color="green">202</FONT> boolean popNamespace(String prefix)<a name="line.202"></a> |
| <FONT color="green">203</FONT> {<a name="line.203"></a> |
| <FONT color="green">204</FONT> // Prefixes "xml" and "xmlns" cannot be redefined<a name="line.204"></a> |
| <FONT color="green">205</FONT> if (prefix.startsWith(XML_PREFIX))<a name="line.205"></a> |
| <FONT color="green">206</FONT> {<a name="line.206"></a> |
| <FONT color="green">207</FONT> return false;<a name="line.207"></a> |
| <FONT color="green">208</FONT> }<a name="line.208"></a> |
| <FONT color="green">209</FONT> <a name="line.209"></a> |
| <FONT color="green">210</FONT> Stack stack;<a name="line.210"></a> |
| <FONT color="green">211</FONT> if ((stack = getPrefixStack(prefix)) != null)<a name="line.211"></a> |
| <FONT color="green">212</FONT> {<a name="line.212"></a> |
| <FONT color="green">213</FONT> stack.pop();<a name="line.213"></a> |
| <FONT color="green">214</FONT> return true;<a name="line.214"></a> |
| <FONT color="green">215</FONT> }<a name="line.215"></a> |
| <FONT color="green">216</FONT> return false;<a name="line.216"></a> |
| <FONT color="green">217</FONT> }<a name="line.217"></a> |
| <FONT color="green">218</FONT> <a name="line.218"></a> |
| <FONT color="green">219</FONT> /**<a name="line.219"></a> |
| <FONT color="green">220</FONT> * Declare a mapping of a prefix to namespace URI at the given element depth.<a name="line.220"></a> |
| <FONT color="green">221</FONT> * @param prefix a String with the prefix for a qualified name<a name="line.221"></a> |
| <FONT color="green">222</FONT> * @param uri a String with the uri to which the prefix is to map<a name="line.222"></a> |
| <FONT color="green">223</FONT> * @param elemDepth the depth of current declaration<a name="line.223"></a> |
| <FONT color="green">224</FONT> */<a name="line.224"></a> |
| <FONT color="green">225</FONT> public boolean pushNamespace(String prefix, String uri, int elemDepth)<a name="line.225"></a> |
| <FONT color="green">226</FONT> {<a name="line.226"></a> |
| <FONT color="green">227</FONT> // Prefixes "xml" and "xmlns" cannot be redefined<a name="line.227"></a> |
| <FONT color="green">228</FONT> if (prefix.startsWith(XML_PREFIX))<a name="line.228"></a> |
| <FONT color="green">229</FONT> {<a name="line.229"></a> |
| <FONT color="green">230</FONT> return false;<a name="line.230"></a> |
| <FONT color="green">231</FONT> }<a name="line.231"></a> |
| <FONT color="green">232</FONT> <a name="line.232"></a> |
| <FONT color="green">233</FONT> Stack stack;<a name="line.233"></a> |
| <FONT color="green">234</FONT> // Get the stack that contains URIs for the specified prefix<a name="line.234"></a> |
| <FONT color="green">235</FONT> if ((stack = (Stack) m_namespaces.get(prefix)) == null)<a name="line.235"></a> |
| <FONT color="green">236</FONT> {<a name="line.236"></a> |
| <FONT color="green">237</FONT> m_namespaces.put(prefix, stack = new Stack());<a name="line.237"></a> |
| <FONT color="green">238</FONT> }<a name="line.238"></a> |
| <FONT color="green">239</FONT> <a name="line.239"></a> |
| <FONT color="green">240</FONT> if (!stack.empty())<a name="line.240"></a> |
| <FONT color="green">241</FONT> {<a name="line.241"></a> |
| <FONT color="green">242</FONT> MappingRecord mr = (MappingRecord)stack.peek();<a name="line.242"></a> |
| <FONT color="green">243</FONT> if (uri.equals(mr.m_uri) || elemDepth == mr.m_declarationDepth) {<a name="line.243"></a> |
| <FONT color="green">244</FONT> // If the same prefix/uri mapping is already on the stack<a name="line.244"></a> |
| <FONT color="green">245</FONT> // don't push this one.<a name="line.245"></a> |
| <FONT color="green">246</FONT> // Or if we have a mapping at the same depth<a name="line.246"></a> |
| <FONT color="green">247</FONT> // don't replace by pushing this one. <a name="line.247"></a> |
| <FONT color="green">248</FONT> return false;<a name="line.248"></a> |
| <FONT color="green">249</FONT> }<a name="line.249"></a> |
| <FONT color="green">250</FONT> }<a name="line.250"></a> |
| <FONT color="green">251</FONT> MappingRecord map = new MappingRecord(prefix,uri,elemDepth);<a name="line.251"></a> |
| <FONT color="green">252</FONT> stack.push(map);<a name="line.252"></a> |
| <FONT color="green">253</FONT> m_nodeStack.push(map);<a name="line.253"></a> |
| <FONT color="green">254</FONT> return true;<a name="line.254"></a> |
| <FONT color="green">255</FONT> }<a name="line.255"></a> |
| <FONT color="green">256</FONT> <a name="line.256"></a> |
| <FONT color="green">257</FONT> /**<a name="line.257"></a> |
| <FONT color="green">258</FONT> * Pop, or undeclare all namespace definitions that are currently<a name="line.258"></a> |
| <FONT color="green">259</FONT> * declared at the given element depth, or deepter.<a name="line.259"></a> |
| <FONT color="green">260</FONT> * @param elemDepth the element depth for which mappings declared at this<a name="line.260"></a> |
| <FONT color="green">261</FONT> * depth or deeper will no longer be valid<a name="line.261"></a> |
| <FONT color="green">262</FONT> * @param saxHandler The ContentHandler to notify of any endPrefixMapping()<a name="line.262"></a> |
| <FONT color="green">263</FONT> * calls. This parameter can be null.<a name="line.263"></a> |
| <FONT color="green">264</FONT> */<a name="line.264"></a> |
| <FONT color="green">265</FONT> void popNamespaces(int elemDepth, ContentHandler saxHandler)<a name="line.265"></a> |
| <FONT color="green">266</FONT> {<a name="line.266"></a> |
| <FONT color="green">267</FONT> while (true)<a name="line.267"></a> |
| <FONT color="green">268</FONT> {<a name="line.268"></a> |
| <FONT color="green">269</FONT> if (m_nodeStack.isEmpty())<a name="line.269"></a> |
| <FONT color="green">270</FONT> return;<a name="line.270"></a> |
| <FONT color="green">271</FONT> MappingRecord map = (MappingRecord) (m_nodeStack.peek());<a name="line.271"></a> |
| <FONT color="green">272</FONT> int depth = map.m_declarationDepth;<a name="line.272"></a> |
| <FONT color="green">273</FONT> if (elemDepth < 1 || map.m_declarationDepth < elemDepth)<a name="line.273"></a> |
| <FONT color="green">274</FONT> break;<a name="line.274"></a> |
| <FONT color="green">275</FONT> /* the depth of the declared mapping is elemDepth or deeper<a name="line.275"></a> |
| <FONT color="green">276</FONT> * so get rid of it<a name="line.276"></a> |
| <FONT color="green">277</FONT> */<a name="line.277"></a> |
| <FONT color="green">278</FONT> <a name="line.278"></a> |
| <FONT color="green">279</FONT> MappingRecord nm1 = (MappingRecord) m_nodeStack.pop();<a name="line.279"></a> |
| <FONT color="green">280</FONT> // pop the node from the stack<a name="line.280"></a> |
| <FONT color="green">281</FONT> String prefix = map.m_prefix;<a name="line.281"></a> |
| <FONT color="green">282</FONT> <a name="line.282"></a> |
| <FONT color="green">283</FONT> Stack prefixStack = getPrefixStack(prefix);<a name="line.283"></a> |
| <FONT color="green">284</FONT> MappingRecord nm2 = (MappingRecord) prefixStack.peek();<a name="line.284"></a> |
| <FONT color="green">285</FONT> if (nm1 == nm2)<a name="line.285"></a> |
| <FONT color="green">286</FONT> {<a name="line.286"></a> |
| <FONT color="green">287</FONT> // It would be nice to always pop() but we<a name="line.287"></a> |
| <FONT color="green">288</FONT> // need to check that the prefix stack still has<a name="line.288"></a> |
| <FONT color="green">289</FONT> // the node we want to get rid of. This is because<a name="line.289"></a> |
| <FONT color="green">290</FONT> // the optimization of essentially this situation:<a name="line.290"></a> |
| <FONT color="green">291</FONT> // <a xmlns:x="abc"><b xmlns:x="" xmlns:x="abc" /></a><a name="line.291"></a> |
| <FONT color="green">292</FONT> // will remove both mappings in <b> because the<a name="line.292"></a> |
| <FONT color="green">293</FONT> // new mapping is the same as the masked one and we get<a name="line.293"></a> |
| <FONT color="green">294</FONT> // <a xmlns:x="abc"><b/></a><a name="line.294"></a> |
| <FONT color="green">295</FONT> // So we are only removing xmlns:x="" or<a name="line.295"></a> |
| <FONT color="green">296</FONT> // xmlns:x="abc" from the depth of element <b><a name="line.296"></a> |
| <FONT color="green">297</FONT> // when going back to <a> if in fact they have<a name="line.297"></a> |
| <FONT color="green">298</FONT> // not been optimized away.<a name="line.298"></a> |
| <FONT color="green">299</FONT> // <a name="line.299"></a> |
| <FONT color="green">300</FONT> prefixStack.pop();<a name="line.300"></a> |
| <FONT color="green">301</FONT> if (saxHandler != null)<a name="line.301"></a> |
| <FONT color="green">302</FONT> {<a name="line.302"></a> |
| <FONT color="green">303</FONT> try<a name="line.303"></a> |
| <FONT color="green">304</FONT> {<a name="line.304"></a> |
| <FONT color="green">305</FONT> saxHandler.endPrefixMapping(prefix);<a name="line.305"></a> |
| <FONT color="green">306</FONT> }<a name="line.306"></a> |
| <FONT color="green">307</FONT> catch (SAXException e)<a name="line.307"></a> |
| <FONT color="green">308</FONT> {<a name="line.308"></a> |
| <FONT color="green">309</FONT> // not much we can do if they aren't willing to listen<a name="line.309"></a> |
| <FONT color="green">310</FONT> }<a name="line.310"></a> |
| <FONT color="green">311</FONT> }<a name="line.311"></a> |
| <FONT color="green">312</FONT> }<a name="line.312"></a> |
| <FONT color="green">313</FONT> <a name="line.313"></a> |
| <FONT color="green">314</FONT> }<a name="line.314"></a> |
| <FONT color="green">315</FONT> }<a name="line.315"></a> |
| <FONT color="green">316</FONT> <a name="line.316"></a> |
| <FONT color="green">317</FONT> /**<a name="line.317"></a> |
| <FONT color="green">318</FONT> * Generate a new namespace prefix ( ns0, ns1 ...) not used before<a name="line.318"></a> |
| <FONT color="green">319</FONT> * @return String a new namespace prefix ( ns0, ns1, ns2 ...)<a name="line.319"></a> |
| <FONT color="green">320</FONT> */<a name="line.320"></a> |
| <FONT color="green">321</FONT> public String generateNextPrefix()<a name="line.321"></a> |
| <FONT color="green">322</FONT> {<a name="line.322"></a> |
| <FONT color="green">323</FONT> return "ns" + (count++);<a name="line.323"></a> |
| <FONT color="green">324</FONT> }<a name="line.324"></a> |
| <FONT color="green">325</FONT> <a name="line.325"></a> |
| <FONT color="green">326</FONT> <a name="line.326"></a> |
| <FONT color="green">327</FONT> /**<a name="line.327"></a> |
| <FONT color="green">328</FONT> * This method makes a clone of this object.<a name="line.328"></a> |
| <FONT color="green">329</FONT> *<a name="line.329"></a> |
| <FONT color="green">330</FONT> */<a name="line.330"></a> |
| <FONT color="green">331</FONT> public Object clone() throws CloneNotSupportedException {<a name="line.331"></a> |
| <FONT color="green">332</FONT> NamespaceMappings clone = new NamespaceMappings();<a name="line.332"></a> |
| <FONT color="green">333</FONT> clone.m_nodeStack = (NamespaceMappings.Stack) m_nodeStack.clone(); <a name="line.333"></a> |
| <FONT color="green">334</FONT> clone.count = this.count;<a name="line.334"></a> |
| <FONT color="green">335</FONT> clone.m_namespaces = (Hashtable) m_namespaces.clone();<a name="line.335"></a> |
| <FONT color="green">336</FONT> <a name="line.336"></a> |
| <FONT color="green">337</FONT> clone.count = count;<a name="line.337"></a> |
| <FONT color="green">338</FONT> return clone;<a name="line.338"></a> |
| <FONT color="green">339</FONT> <a name="line.339"></a> |
| <FONT color="green">340</FONT> }<a name="line.340"></a> |
| <FONT color="green">341</FONT> <a name="line.341"></a> |
| <FONT color="green">342</FONT> final void reset()<a name="line.342"></a> |
| <FONT color="green">343</FONT> {<a name="line.343"></a> |
| <FONT color="green">344</FONT> this.count = 0;<a name="line.344"></a> |
| <FONT color="green">345</FONT> this.m_namespaces.clear();<a name="line.345"></a> |
| <FONT color="green">346</FONT> this.m_nodeStack.clear(); <a name="line.346"></a> |
| <FONT color="green">347</FONT> <a name="line.347"></a> |
| <FONT color="green">348</FONT> initNamespaces();<a name="line.348"></a> |
| <FONT color="green">349</FONT> }<a name="line.349"></a> |
| <FONT color="green">350</FONT> <a name="line.350"></a> |
| <FONT color="green">351</FONT> /**<a name="line.351"></a> |
| <FONT color="green">352</FONT> * Just a little class that ties the 3 fields together<a name="line.352"></a> |
| <FONT color="green">353</FONT> * into one object, and this simplifies the pushing<a name="line.353"></a> |
| <FONT color="green">354</FONT> * and popping of namespaces to one push or one pop on<a name="line.354"></a> |
| <FONT color="green">355</FONT> * one stack rather than on 3 separate stacks.<a name="line.355"></a> |
| <FONT color="green">356</FONT> */<a name="line.356"></a> |
| <FONT color="green">357</FONT> static class MappingRecord {<a name="line.357"></a> |
| <FONT color="green">358</FONT> final String m_prefix; // the prefix<a name="line.358"></a> |
| <FONT color="green">359</FONT> final String m_uri; // the uri, possibly "" but never null<a name="line.359"></a> |
| <FONT color="green">360</FONT> // the depth of the element where declartion was made<a name="line.360"></a> |
| <FONT color="green">361</FONT> final int m_declarationDepth;<a name="line.361"></a> |
| <FONT color="green">362</FONT> MappingRecord(String prefix, String uri, int depth) {<a name="line.362"></a> |
| <FONT color="green">363</FONT> m_prefix = prefix;<a name="line.363"></a> |
| <FONT color="green">364</FONT> m_uri = (uri==null)? EMPTYSTRING : uri;<a name="line.364"></a> |
| <FONT color="green">365</FONT> m_declarationDepth = depth;<a name="line.365"></a> |
| <FONT color="green">366</FONT> }<a name="line.366"></a> |
| <FONT color="green">367</FONT> } <a name="line.367"></a> |
| <FONT color="green">368</FONT> <a name="line.368"></a> |
| <FONT color="green">369</FONT> /**<a name="line.369"></a> |
| <FONT color="green">370</FONT> * Rather than using java.util.Stack, this private class<a name="line.370"></a> |
| <FONT color="green">371</FONT> * provides a minimal subset of methods and is faster<a name="line.371"></a> |
| <FONT color="green">372</FONT> * because it is not thread-safe.<a name="line.372"></a> |
| <FONT color="green">373</FONT> */<a name="line.373"></a> |
| <FONT color="green">374</FONT> private class Stack {<a name="line.374"></a> |
| <FONT color="green">375</FONT> private int top = -1;<a name="line.375"></a> |
| <FONT color="green">376</FONT> private int max = 20;<a name="line.376"></a> |
| <FONT color="green">377</FONT> Object[] m_stack = new Object[max];<a name="line.377"></a> |
| <FONT color="green">378</FONT> <a name="line.378"></a> |
| <FONT color="green">379</FONT> public Object clone() throws CloneNotSupportedException {<a name="line.379"></a> |
| <FONT color="green">380</FONT> NamespaceMappings.Stack clone = new NamespaceMappings.Stack(); <a name="line.380"></a> |
| <FONT color="green">381</FONT> clone.max = this.max;<a name="line.381"></a> |
| <FONT color="green">382</FONT> clone.top = this.top;<a name="line.382"></a> |
| <FONT color="green">383</FONT> clone.m_stack = new Object[clone.max];<a name="line.383"></a> |
| <FONT color="green">384</FONT> for (int i=0; i <= top; i++) {<a name="line.384"></a> |
| <FONT color="green">385</FONT> // We are just copying references to immutable MappingRecord objects here<a name="line.385"></a> |
| <FONT color="green">386</FONT> // so it is OK if the clone has references to these.<a name="line.386"></a> |
| <FONT color="green">387</FONT> clone.m_stack[i] = this.m_stack[i];<a name="line.387"></a> |
| <FONT color="green">388</FONT> }<a name="line.388"></a> |
| <FONT color="green">389</FONT> return clone; <a name="line.389"></a> |
| <FONT color="green">390</FONT> }<a name="line.390"></a> |
| <FONT color="green">391</FONT> <a name="line.391"></a> |
| <FONT color="green">392</FONT> public Stack()<a name="line.392"></a> |
| <FONT color="green">393</FONT> {<a name="line.393"></a> |
| <FONT color="green">394</FONT> }<a name="line.394"></a> |
| <FONT color="green">395</FONT> <a name="line.395"></a> |
| <FONT color="green">396</FONT> public Object push(Object o) {<a name="line.396"></a> |
| <FONT color="green">397</FONT> top++;<a name="line.397"></a> |
| <FONT color="green">398</FONT> if (max <= top) {<a name="line.398"></a> |
| <FONT color="green">399</FONT> int newMax = 2*max + 1;<a name="line.399"></a> |
| <FONT color="green">400</FONT> Object[] newArray = new Object[newMax];<a name="line.400"></a> |
| <FONT color="green">401</FONT> System.arraycopy(m_stack,0, newArray, 0, max);<a name="line.401"></a> |
| <FONT color="green">402</FONT> max = newMax;<a name="line.402"></a> |
| <FONT color="green">403</FONT> m_stack = newArray;<a name="line.403"></a> |
| <FONT color="green">404</FONT> }<a name="line.404"></a> |
| <FONT color="green">405</FONT> m_stack[top] = o;<a name="line.405"></a> |
| <FONT color="green">406</FONT> return o;<a name="line.406"></a> |
| <FONT color="green">407</FONT> }<a name="line.407"></a> |
| <FONT color="green">408</FONT> <a name="line.408"></a> |
| <FONT color="green">409</FONT> public Object pop() {<a name="line.409"></a> |
| <FONT color="green">410</FONT> Object o;<a name="line.410"></a> |
| <FONT color="green">411</FONT> if (0 <= top) {<a name="line.411"></a> |
| <FONT color="green">412</FONT> o = m_stack[top];<a name="line.412"></a> |
| <FONT color="green">413</FONT> // m_stack[top] = null; do we really care?<a name="line.413"></a> |
| <FONT color="green">414</FONT> top--;<a name="line.414"></a> |
| <FONT color="green">415</FONT> }<a name="line.415"></a> |
| <FONT color="green">416</FONT> else<a name="line.416"></a> |
| <FONT color="green">417</FONT> o = null;<a name="line.417"></a> |
| <FONT color="green">418</FONT> return o;<a name="line.418"></a> |
| <FONT color="green">419</FONT> }<a name="line.419"></a> |
| <FONT color="green">420</FONT> <a name="line.420"></a> |
| <FONT color="green">421</FONT> public Object peek() {<a name="line.421"></a> |
| <FONT color="green">422</FONT> Object o;<a name="line.422"></a> |
| <FONT color="green">423</FONT> if (0 <= top) {<a name="line.423"></a> |
| <FONT color="green">424</FONT> o = m_stack[top];<a name="line.424"></a> |
| <FONT color="green">425</FONT> }<a name="line.425"></a> |
| <FONT color="green">426</FONT> else<a name="line.426"></a> |
| <FONT color="green">427</FONT> o = null;<a name="line.427"></a> |
| <FONT color="green">428</FONT> return o;<a name="line.428"></a> |
| <FONT color="green">429</FONT> }<a name="line.429"></a> |
| <FONT color="green">430</FONT> <a name="line.430"></a> |
| <FONT color="green">431</FONT> public Object peek(int idx) {<a name="line.431"></a> |
| <FONT color="green">432</FONT> return m_stack[idx];<a name="line.432"></a> |
| <FONT color="green">433</FONT> }<a name="line.433"></a> |
| <FONT color="green">434</FONT> <a name="line.434"></a> |
| <FONT color="green">435</FONT> public boolean isEmpty() {<a name="line.435"></a> |
| <FONT color="green">436</FONT> return (top < 0);<a name="line.436"></a> |
| <FONT color="green">437</FONT> }<a name="line.437"></a> |
| <FONT color="green">438</FONT> public boolean empty() {<a name="line.438"></a> |
| <FONT color="green">439</FONT> return (top < 0);<a name="line.439"></a> |
| <FONT color="green">440</FONT> }<a name="line.440"></a> |
| <FONT color="green">441</FONT> <a name="line.441"></a> |
| <FONT color="green">442</FONT> public void clear() {<a name="line.442"></a> |
| <FONT color="green">443</FONT> for (int i=0; i<= top; i++)<a name="line.443"></a> |
| <FONT color="green">444</FONT> m_stack[i] = null;<a name="line.444"></a> |
| <FONT color="green">445</FONT> top = -1;<a name="line.445"></a> |
| <FONT color="green">446</FONT> } <a name="line.446"></a> |
| <FONT color="green">447</FONT> <a name="line.447"></a> |
| <FONT color="green">448</FONT> public Object getElement(int index) {<a name="line.448"></a> |
| <FONT color="green">449</FONT> return m_stack[index]; <a name="line.449"></a> |
| <FONT color="green">450</FONT> }<a name="line.450"></a> |
| <FONT color="green">451</FONT> }<a name="line.451"></a> |
| <FONT color="green">452</FONT> /**<a name="line.452"></a> |
| <FONT color="green">453</FONT> * A more type-safe way to get a stack of prefix mappings<a name="line.453"></a> |
| <FONT color="green">454</FONT> * from the Hashtable m_namespaces<a name="line.454"></a> |
| <FONT color="green">455</FONT> * (this is the only method that does the type cast).<a name="line.455"></a> |
| <FONT color="green">456</FONT> */<a name="line.456"></a> |
| <FONT color="green">457</FONT> <a name="line.457"></a> |
| <FONT color="green">458</FONT> private Stack getPrefixStack(String prefix) {<a name="line.458"></a> |
| <FONT color="green">459</FONT> Stack fs = (Stack) m_namespaces.get(prefix);<a name="line.459"></a> |
| <FONT color="green">460</FONT> return fs;<a name="line.460"></a> |
| <FONT color="green">461</FONT> }<a name="line.461"></a> |
| <FONT color="green">462</FONT> <a name="line.462"></a> |
| <FONT color="green">463</FONT> /**<a name="line.463"></a> |
| <FONT color="green">464</FONT> * A more type-safe way of saving stacks under the<a name="line.464"></a> |
| <FONT color="green">465</FONT> * m_namespaces Hashtable.<a name="line.465"></a> |
| <FONT color="green">466</FONT> */<a name="line.466"></a> |
| <FONT color="green">467</FONT> private Stack createPrefixStack(String prefix)<a name="line.467"></a> |
| <FONT color="green">468</FONT> {<a name="line.468"></a> |
| <FONT color="green">469</FONT> Stack fs = new Stack();<a name="line.469"></a> |
| <FONT color="green">470</FONT> m_namespaces.put(prefix, fs);<a name="line.470"></a> |
| <FONT color="green">471</FONT> return fs;<a name="line.471"></a> |
| <FONT color="green">472</FONT> }<a name="line.472"></a> |
| <FONT color="green">473</FONT> <a name="line.473"></a> |
| <FONT color="green">474</FONT> /**<a name="line.474"></a> |
| <FONT color="green">475</FONT> * Given a namespace uri, get all prefixes bound to the Namespace URI in the current scope. <a name="line.475"></a> |
| <FONT color="green">476</FONT> * <a name="line.476"></a> |
| <FONT color="green">477</FONT> * @param uri the namespace URI to be search for<a name="line.477"></a> |
| <FONT color="green">478</FONT> * @return An array of Strings which are<a name="line.478"></a> |
| <FONT color="green">479</FONT> * all prefixes bound to the namespace URI in the current scope.<a name="line.479"></a> |
| <FONT color="green">480</FONT> * An array of zero elements is returned if no prefixes map to the given<a name="line.480"></a> |
| <FONT color="green">481</FONT> * namespace URI.<a name="line.481"></a> |
| <FONT color="green">482</FONT> */<a name="line.482"></a> |
| <FONT color="green">483</FONT> public String[] lookupAllPrefixes(String uri)<a name="line.483"></a> |
| <FONT color="green">484</FONT> {<a name="line.484"></a> |
| <FONT color="green">485</FONT> java.util.ArrayList foundPrefixes = new java.util.ArrayList();<a name="line.485"></a> |
| <FONT color="green">486</FONT> Enumeration prefixes = m_namespaces.keys();<a name="line.486"></a> |
| <FONT color="green">487</FONT> while (prefixes.hasMoreElements())<a name="line.487"></a> |
| <FONT color="green">488</FONT> {<a name="line.488"></a> |
| <FONT color="green">489</FONT> String prefix = (String) prefixes.nextElement();<a name="line.489"></a> |
| <FONT color="green">490</FONT> String uri2 = lookupNamespace(prefix);<a name="line.490"></a> |
| <FONT color="green">491</FONT> if (uri2 != null && uri2.equals(uri))<a name="line.491"></a> |
| <FONT color="green">492</FONT> {<a name="line.492"></a> |
| <FONT color="green">493</FONT> foundPrefixes.add(prefix);<a name="line.493"></a> |
| <FONT color="green">494</FONT> }<a name="line.494"></a> |
| <FONT color="green">495</FONT> }<a name="line.495"></a> |
| <FONT color="green">496</FONT> String[] prefixArray = new String[foundPrefixes.size()];<a name="line.496"></a> |
| <FONT color="green">497</FONT> foundPrefixes.toArray(prefixArray);<a name="line.497"></a> |
| <FONT color="green">498</FONT> return prefixArray;<a name="line.498"></a> |
| <FONT color="green">499</FONT> }<a name="line.499"></a> |
| <FONT color="green">500</FONT> }<a name="line.500"></a> |
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