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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: NumeratorFormatter.java 1225439 2011-12-29 05:22:32Z mrglavas $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xalan.transformer;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.util.Locale;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.util.NoSuchElementException;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import org.w3c.dom.Element;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> /**<a name="line.28"></a> |
| <FONT color="green">029</FONT> * Converts enumerated numbers into strings, using the XSL conversion attributes.<a name="line.29"></a> |
| <FONT color="green">030</FONT> * Having this in a class helps avoid being forced to extract the attributes repeatedly.<a name="line.30"></a> |
| <FONT color="green">031</FONT> * @xsl.usage internal<a name="line.31"></a> |
| <FONT color="green">032</FONT> */<a name="line.32"></a> |
| <FONT color="green">033</FONT> class NumeratorFormatter<a name="line.33"></a> |
| <FONT color="green">034</FONT> {<a name="line.34"></a> |
| <FONT color="green">035</FONT> <a name="line.35"></a> |
| <FONT color="green">036</FONT> /** The owning xsl:number element. */<a name="line.36"></a> |
| <FONT color="green">037</FONT> protected Element m_xslNumberElement;<a name="line.37"></a> |
| <FONT color="green">038</FONT> <a name="line.38"></a> |
| <FONT color="green">039</FONT> /** An instance of a Tokenizer */<a name="line.39"></a> |
| <FONT color="green">040</FONT> NumberFormatStringTokenizer m_formatTokenizer;<a name="line.40"></a> |
| <FONT color="green">041</FONT> <a name="line.41"></a> |
| <FONT color="green">042</FONT> /** Locale we need to format in */<a name="line.42"></a> |
| <FONT color="green">043</FONT> Locale m_locale;<a name="line.43"></a> |
| <FONT color="green">044</FONT> <a name="line.44"></a> |
| <FONT color="green">045</FONT> /** An instance of a NumberFormat */<a name="line.45"></a> |
| <FONT color="green">046</FONT> java.text.NumberFormat m_formatter;<a name="line.46"></a> |
| <FONT color="green">047</FONT> <a name="line.47"></a> |
| <FONT color="green">048</FONT> /** An instance of a transformer */<a name="line.48"></a> |
| <FONT color="green">049</FONT> TransformerImpl m_processor;<a name="line.49"></a> |
| <FONT color="green">050</FONT> <a name="line.50"></a> |
| <FONT color="green">051</FONT> /**<a name="line.51"></a> |
| <FONT color="green">052</FONT> * Table to help in converting decimals to roman numerals.<a name="line.52"></a> |
| <FONT color="green">053</FONT> * @see org.apache.xalan.transformer.DecimalToRoman<a name="line.53"></a> |
| <FONT color="green">054</FONT> */<a name="line.54"></a> |
| <FONT color="green">055</FONT> private final static DecimalToRoman m_romanConvertTable[] = {<a name="line.55"></a> |
| <FONT color="green">056</FONT> new DecimalToRoman(1000, "M", 900, "CM"),<a name="line.56"></a> |
| <FONT color="green">057</FONT> new DecimalToRoman(500, "D", 400, "CD"),<a name="line.57"></a> |
| <FONT color="green">058</FONT> new DecimalToRoman(100L, "C", 90L, "XC"),<a name="line.58"></a> |
| <FONT color="green">059</FONT> new DecimalToRoman(50L, "L", 40L, "XL"),<a name="line.59"></a> |
| <FONT color="green">060</FONT> new DecimalToRoman(10L, "X", 9L, "IX"),<a name="line.60"></a> |
| <FONT color="green">061</FONT> new DecimalToRoman(5L, "V", 4L, "IV"),<a name="line.61"></a> |
| <FONT color="green">062</FONT> new DecimalToRoman(1L, "I", 1L, "I") };<a name="line.62"></a> |
| <FONT color="green">063</FONT> <a name="line.63"></a> |
| <FONT color="green">064</FONT> /**<a name="line.64"></a> |
| <FONT color="green">065</FONT> * Chars for converting integers into alpha counts.<a name="line.65"></a> |
| <FONT color="green">066</FONT> * @see TransformerImpl#int2alphaCount<a name="line.66"></a> |
| <FONT color="green">067</FONT> */<a name="line.67"></a> |
| <FONT color="green">068</FONT> private final static char[] m_alphaCountTable = { 'Z', // z for zero<a name="line.68"></a> |
| <FONT color="green">069</FONT> 'A', 'B', 'C', 'D', 'E',<a name="line.69"></a> |
| <FONT color="green">070</FONT> 'F', 'G', 'H', 'I', 'J',<a name="line.70"></a> |
| <FONT color="green">071</FONT> 'K', 'L', 'M', 'N', 'O',<a name="line.71"></a> |
| <FONT color="green">072</FONT> 'P', 'Q', 'R', 'S', 'T',<a name="line.72"></a> |
| <FONT color="green">073</FONT> 'U', 'V', 'W', 'X', 'Y' };<a name="line.73"></a> |
| <FONT color="green">074</FONT> <a name="line.74"></a> |
| <FONT color="green">075</FONT> /**<a name="line.75"></a> |
| <FONT color="green">076</FONT> * Construct a NumeratorFormatter using an element<a name="line.76"></a> |
| <FONT color="green">077</FONT> * that contains XSL number conversion attributes -<a name="line.77"></a> |
| <FONT color="green">078</FONT> * format, letter-value, xml:lang, digit-group-sep,<a name="line.78"></a> |
| <FONT color="green">079</FONT> * n-digits-per-group, and sequence-src.<a name="line.79"></a> |
| <FONT color="green">080</FONT> *<a name="line.80"></a> |
| <FONT color="green">081</FONT> * @param xslNumberElement The given xsl:number element<a name="line.81"></a> |
| <FONT color="green">082</FONT> * @param processor a non-null transformer instance<a name="line.82"></a> |
| <FONT color="green">083</FONT> */<a name="line.83"></a> |
| <FONT color="green">084</FONT> NumeratorFormatter(Element xslNumberElement, TransformerImpl processor)<a name="line.84"></a> |
| <FONT color="green">085</FONT> {<a name="line.85"></a> |
| <FONT color="green">086</FONT> m_xslNumberElement = xslNumberElement;<a name="line.86"></a> |
| <FONT color="green">087</FONT> m_processor = processor;<a name="line.87"></a> |
| <FONT color="green">088</FONT> } // end NumeratorFormatter(Element) constructor<a name="line.88"></a> |
| <FONT color="green">089</FONT> <a name="line.89"></a> |
| <FONT color="green">090</FONT> /**<a name="line.90"></a> |
| <FONT color="green">091</FONT> * Convert a long integer into alphabetic counting, in other words<a name="line.91"></a> |
| <FONT color="green">092</FONT> * count using the sequence A B C ... Z AA AB AC.... etc.<a name="line.92"></a> |
| <FONT color="green">093</FONT> * <a name="line.93"></a> |
| <FONT color="green">094</FONT> * @param val Value to convert -- must be greater than zero.<a name="line.94"></a> |
| <FONT color="green">095</FONT> * @param table a table containing one character for each digit in the radix<a name="line.95"></a> |
| <FONT color="green">096</FONT> * @return String representing alpha count of number.<a name="line.96"></a> |
| <FONT color="green">097</FONT> * @see org.apache.xalan.transformer.DecimalToRoman<a name="line.97"></a> |
| <FONT color="green">098</FONT> *<a name="line.98"></a> |
| <FONT color="green">099</FONT> * Note that the radix of the conversion is inferred from the size<a name="line.99"></a> |
| <FONT color="green">100</FONT> * of the table.<a name="line.100"></a> |
| <FONT color="green">101</FONT> */<a name="line.101"></a> |
| <FONT color="green">102</FONT> protected String int2alphaCount(int val, char[] table)<a name="line.102"></a> |
| <FONT color="green">103</FONT> {<a name="line.103"></a> |
| <FONT color="green">104</FONT> <a name="line.104"></a> |
| <FONT color="green">105</FONT> int radix = table.length;<a name="line.105"></a> |
| <FONT color="green">106</FONT> <a name="line.106"></a> |
| <FONT color="green">107</FONT> // Create a buffer to hold the result<a name="line.107"></a> |
| <FONT color="green">108</FONT> // TODO: size of the table can be detereined by computing<a name="line.108"></a> |
| <FONT color="green">109</FONT> // logs of the radix. For now, we fake it.<a name="line.109"></a> |
| <FONT color="green">110</FONT> char buf[] = new char[100];<a name="line.110"></a> |
| <FONT color="green">111</FONT> <a name="line.111"></a> |
| <FONT color="green">112</FONT> // next character to set in the buffer<a name="line.112"></a> |
| <FONT color="green">113</FONT> int charPos = buf.length - 1; // work backward through buf[]<a name="line.113"></a> |
| <FONT color="green">114</FONT> <a name="line.114"></a> |
| <FONT color="green">115</FONT> // index in table of the last character that we stored<a name="line.115"></a> |
| <FONT color="green">116</FONT> int lookupIndex = 1; // start off with anything other than zero to make correction work<a name="line.116"></a> |
| <FONT color="green">117</FONT> <a name="line.117"></a> |
| <FONT color="green">118</FONT> // Correction number<a name="line.118"></a> |
| <FONT color="green">119</FONT> //<a name="line.119"></a> |
| <FONT color="green">120</FONT> // Correction can take on exactly two values:<a name="line.120"></a> |
| <FONT color="green">121</FONT> //<a name="line.121"></a> |
| <FONT color="green">122</FONT> // 0 if the next character is to be emitted is usual<a name="line.122"></a> |
| <FONT color="green">123</FONT> //<a name="line.123"></a> |
| <FONT color="green">124</FONT> // radix - 1<a name="line.124"></a> |
| <FONT color="green">125</FONT> // if the next char to be emitted should be one less than<a name="line.125"></a> |
| <FONT color="green">126</FONT> // you would expect<a name="line.126"></a> |
| <FONT color="green">127</FONT> //<a name="line.127"></a> |
| <FONT color="green">128</FONT> // For example, consider radix 10, where 1="A" and 10="J"<a name="line.128"></a> |
| <FONT color="green">129</FONT> //<a name="line.129"></a> |
| <FONT color="green">130</FONT> // In this scheme, we count: A, B, C ... H, I, J (not A0 and certainly<a name="line.130"></a> |
| <FONT color="green">131</FONT> // not AJ), A1<a name="line.131"></a> |
| <FONT color="green">132</FONT> //<a name="line.132"></a> |
| <FONT color="green">133</FONT> // So, how do we keep from emitting AJ for 10? After correctly emitting the<a name="line.133"></a> |
| <FONT color="green">134</FONT> // J, lookupIndex is zero. We now compute a correction number of 9 (radix-1).<a name="line.134"></a> |
| <FONT color="green">135</FONT> // In the following line, we'll compute (val+correction) % radix, which is,<a name="line.135"></a> |
| <FONT color="green">136</FONT> // (val+9)/10. By this time, val is 1, so we compute (1+9) % 10, which<a name="line.136"></a> |
| <FONT color="green">137</FONT> // is 10 % 10 or zero. So, we'll prepare to emit "JJ", but then we'll<a name="line.137"></a> |
| <FONT color="green">138</FONT> // later suppress the leading J as representing zero (in the mod system,<a name="line.138"></a> |
| <FONT color="green">139</FONT> // it can represent either 10 or zero). In summary, the correction value of<a name="line.139"></a> |
| <FONT color="green">140</FONT> // "radix-1" acts like "-1" when run through the mod operator, but with the<a name="line.140"></a> |
| <FONT color="green">141</FONT> // desireable characteristic that it never produces a negative number.<a name="line.141"></a> |
| <FONT color="green">142</FONT> int correction = 0;<a name="line.142"></a> |
| <FONT color="green">143</FONT> <a name="line.143"></a> |
| <FONT color="green">144</FONT> // TODO: throw error on out of range input<a name="line.144"></a> |
| <FONT color="green">145</FONT> do<a name="line.145"></a> |
| <FONT color="green">146</FONT> {<a name="line.146"></a> |
| <FONT color="green">147</FONT> <a name="line.147"></a> |
| <FONT color="green">148</FONT> // most of the correction calculation is explained above, the reason for the<a name="line.148"></a> |
| <FONT color="green">149</FONT> // term after the "|| " is that it correctly propagates carries across<a name="line.149"></a> |
| <FONT color="green">150</FONT> // multiple columns.<a name="line.150"></a> |
| <FONT color="green">151</FONT> correction =<a name="line.151"></a> |
| <FONT color="green">152</FONT> ((lookupIndex == 0) || (correction != 0 && lookupIndex == radix - 1))<a name="line.152"></a> |
| <FONT color="green">153</FONT> ? (radix - 1) : 0;<a name="line.153"></a> |
| <FONT color="green">154</FONT> <a name="line.154"></a> |
| <FONT color="green">155</FONT> // index in "table" of the next char to emit<a name="line.155"></a> |
| <FONT color="green">156</FONT> lookupIndex = (val + correction) % radix;<a name="line.156"></a> |
| <FONT color="green">157</FONT> <a name="line.157"></a> |
| <FONT color="green">158</FONT> // shift input by one "column"<a name="line.158"></a> |
| <FONT color="green">159</FONT> val = (val / radix);<a name="line.159"></a> |
| <FONT color="green">160</FONT> <a name="line.160"></a> |
| <FONT color="green">161</FONT> // if the next value we'd put out would be a leading zero, we're done.<a name="line.161"></a> |
| <FONT color="green">162</FONT> if (lookupIndex == 0 && val == 0)<a name="line.162"></a> |
| <FONT color="green">163</FONT> break;<a name="line.163"></a> |
| <FONT color="green">164</FONT> <a name="line.164"></a> |
| <FONT color="green">165</FONT> // put out the next character of output<a name="line.165"></a> |
| <FONT color="green">166</FONT> buf[charPos--] = table[lookupIndex];<a name="line.166"></a> |
| <FONT color="green">167</FONT> }<a name="line.167"></a> |
| <FONT color="green">168</FONT> while (val > 0);<a name="line.168"></a> |
| <FONT color="green">169</FONT> <a name="line.169"></a> |
| <FONT color="green">170</FONT> return new String(buf, charPos + 1, (buf.length - charPos - 1));<a name="line.170"></a> |
| <FONT color="green">171</FONT> }<a name="line.171"></a> |
| <FONT color="green">172</FONT> <a name="line.172"></a> |
| <FONT color="green">173</FONT> /**<a name="line.173"></a> |
| <FONT color="green">174</FONT> * Convert a long integer into roman numerals.<a name="line.174"></a> |
| <FONT color="green">175</FONT> * @param val Value to convert.<a name="line.175"></a> |
| <FONT color="green">176</FONT> * @param prefixesAreOK true_ to enable prefix notation (e.g. 4 = "IV"),<a name="line.176"></a> |
| <FONT color="green">177</FONT> * false_ to disable prefix notation (e.g. 4 = "IIII").<a name="line.177"></a> |
| <FONT color="green">178</FONT> * @return Roman numeral string.<a name="line.178"></a> |
| <FONT color="green">179</FONT> * @see DecimalToRoman<a name="line.179"></a> |
| <FONT color="green">180</FONT> * @see m_romanConvertTable<a name="line.180"></a> |
| <FONT color="green">181</FONT> */<a name="line.181"></a> |
| <FONT color="green">182</FONT> String long2roman(long val, boolean prefixesAreOK)<a name="line.182"></a> |
| <FONT color="green">183</FONT> {<a name="line.183"></a> |
| <FONT color="green">184</FONT> <a name="line.184"></a> |
| <FONT color="green">185</FONT> if (val <= 0)<a name="line.185"></a> |
| <FONT color="green">186</FONT> {<a name="line.186"></a> |
| <FONT color="green">187</FONT> return "#E(" + val + ")";<a name="line.187"></a> |
| <FONT color="green">188</FONT> }<a name="line.188"></a> |
| <FONT color="green">189</FONT> <a name="line.189"></a> |
| <FONT color="green">190</FONT> final String roman;<a name="line.190"></a> |
| <FONT color="green">191</FONT> int place = 0;<a name="line.191"></a> |
| <FONT color="green">192</FONT> <a name="line.192"></a> |
| <FONT color="green">193</FONT> if (val <= 3999L)<a name="line.193"></a> |
| <FONT color="green">194</FONT> {<a name="line.194"></a> |
| <FONT color="green">195</FONT> StringBuffer romanBuffer = new StringBuffer();<a name="line.195"></a> |
| <FONT color="green">196</FONT> do<a name="line.196"></a> |
| <FONT color="green">197</FONT> {<a name="line.197"></a> |
| <FONT color="green">198</FONT> while (val >= m_romanConvertTable[place].m_postValue)<a name="line.198"></a> |
| <FONT color="green">199</FONT> {<a name="line.199"></a> |
| <FONT color="green">200</FONT> romanBuffer.append(m_romanConvertTable[place].m_postLetter);<a name="line.200"></a> |
| <FONT color="green">201</FONT> val -= m_romanConvertTable[place].m_postValue;<a name="line.201"></a> |
| <FONT color="green">202</FONT> }<a name="line.202"></a> |
| <FONT color="green">203</FONT> <a name="line.203"></a> |
| <FONT color="green">204</FONT> if (prefixesAreOK)<a name="line.204"></a> |
| <FONT color="green">205</FONT> {<a name="line.205"></a> |
| <FONT color="green">206</FONT> if (val >= m_romanConvertTable[place].m_preValue)<a name="line.206"></a> |
| <FONT color="green">207</FONT> {<a name="line.207"></a> |
| <FONT color="green">208</FONT> romanBuffer.append(m_romanConvertTable[place].m_preLetter);<a name="line.208"></a> |
| <FONT color="green">209</FONT> val -= m_romanConvertTable[place].m_preValue;<a name="line.209"></a> |
| <FONT color="green">210</FONT> }<a name="line.210"></a> |
| <FONT color="green">211</FONT> }<a name="line.211"></a> |
| <FONT color="green">212</FONT> <a name="line.212"></a> |
| <FONT color="green">213</FONT> place++;<a name="line.213"></a> |
| <FONT color="green">214</FONT> }<a name="line.214"></a> |
| <FONT color="green">215</FONT> while (val > 0);<a name="line.215"></a> |
| <FONT color="green">216</FONT> roman = romanBuffer.toString();<a name="line.216"></a> |
| <FONT color="green">217</FONT> }<a name="line.217"></a> |
| <FONT color="green">218</FONT> else<a name="line.218"></a> |
| <FONT color="green">219</FONT> {<a name="line.219"></a> |
| <FONT color="green">220</FONT> roman = "#error";<a name="line.220"></a> |
| <FONT color="green">221</FONT> }<a name="line.221"></a> |
| <FONT color="green">222</FONT> <a name="line.222"></a> |
| <FONT color="green">223</FONT> return roman;<a name="line.223"></a> |
| <FONT color="green">224</FONT> } // end long2roman<a name="line.224"></a> |
| <FONT color="green">225</FONT> <a name="line.225"></a> |
| <FONT color="green">226</FONT> /**<a name="line.226"></a> |
| <FONT color="green">227</FONT> * This class returns tokens using non-alphanumberic<a name="line.227"></a> |
| <FONT color="green">228</FONT> * characters as delimiters.<a name="line.228"></a> |
| <FONT color="green">229</FONT> */<a name="line.229"></a> |
| <FONT color="green">230</FONT> static class NumberFormatStringTokenizer<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> /** Field holding the current position in the string */<a name="line.233"></a> |
| <FONT color="green">234</FONT> private int currentPosition;<a name="line.234"></a> |
| <FONT color="green">235</FONT> <a name="line.235"></a> |
| <FONT color="green">236</FONT> /** The total length of the string */<a name="line.236"></a> |
| <FONT color="green">237</FONT> private int maxPosition;<a name="line.237"></a> |
| <FONT color="green">238</FONT> <a name="line.238"></a> |
| <FONT color="green">239</FONT> /** The string to tokenize */<a name="line.239"></a> |
| <FONT color="green">240</FONT> private String str;<a name="line.240"></a> |
| <FONT color="green">241</FONT> <a name="line.241"></a> |
| <FONT color="green">242</FONT> /**<a name="line.242"></a> |
| <FONT color="green">243</FONT> * Construct a NumberFormatStringTokenizer.<a name="line.243"></a> |
| <FONT color="green">244</FONT> *<a name="line.244"></a> |
| <FONT color="green">245</FONT> * @param str The string to tokenize<a name="line.245"></a> |
| <FONT color="green">246</FONT> */<a name="line.246"></a> |
| <FONT color="green">247</FONT> NumberFormatStringTokenizer(String str)<a name="line.247"></a> |
| <FONT color="green">248</FONT> {<a name="line.248"></a> |
| <FONT color="green">249</FONT> this.str = str;<a name="line.249"></a> |
| <FONT color="green">250</FONT> maxPosition = str.length();<a name="line.250"></a> |
| <FONT color="green">251</FONT> }<a name="line.251"></a> |
| <FONT color="green">252</FONT> <a name="line.252"></a> |
| <FONT color="green">253</FONT> /**<a name="line.253"></a> |
| <FONT color="green">254</FONT> * Reset tokenizer so that nextToken() starts from the beginning. <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> void reset()<a name="line.257"></a> |
| <FONT color="green">258</FONT> {<a name="line.258"></a> |
| <FONT color="green">259</FONT> currentPosition = 0;<a name="line.259"></a> |
| <FONT color="green">260</FONT> }<a name="line.260"></a> |
| <FONT color="green">261</FONT> <a name="line.261"></a> |
| <FONT color="green">262</FONT> /**<a name="line.262"></a> |
| <FONT color="green">263</FONT> * Returns the next token from this string tokenizer.<a name="line.263"></a> |
| <FONT color="green">264</FONT> *<a name="line.264"></a> |
| <FONT color="green">265</FONT> * @return the next token from this string tokenizer.<a name="line.265"></a> |
| <FONT color="green">266</FONT> * @throws NoSuchElementException if there are no more tokens in this<a name="line.266"></a> |
| <FONT color="green">267</FONT> * tokenizer's string.<a name="line.267"></a> |
| <FONT color="green">268</FONT> */<a name="line.268"></a> |
| <FONT color="green">269</FONT> String nextToken()<a name="line.269"></a> |
| <FONT color="green">270</FONT> {<a name="line.270"></a> |
| <FONT color="green">271</FONT> <a name="line.271"></a> |
| <FONT color="green">272</FONT> if (currentPosition >= maxPosition)<a name="line.272"></a> |
| <FONT color="green">273</FONT> {<a name="line.273"></a> |
| <FONT color="green">274</FONT> throw new NoSuchElementException();<a name="line.274"></a> |
| <FONT color="green">275</FONT> }<a name="line.275"></a> |
| <FONT color="green">276</FONT> <a name="line.276"></a> |
| <FONT color="green">277</FONT> int start = currentPosition;<a name="line.277"></a> |
| <FONT color="green">278</FONT> <a name="line.278"></a> |
| <FONT color="green">279</FONT> while ((currentPosition < maxPosition)<a name="line.279"></a> |
| <FONT color="green">280</FONT> && Character.isLetterOrDigit(str.charAt(currentPosition)))<a name="line.280"></a> |
| <FONT color="green">281</FONT> {<a name="line.281"></a> |
| <FONT color="green">282</FONT> currentPosition++;<a name="line.282"></a> |
| <FONT color="green">283</FONT> }<a name="line.283"></a> |
| <FONT color="green">284</FONT> <a name="line.284"></a> |
| <FONT color="green">285</FONT> if ((start == currentPosition)<a name="line.285"></a> |
| <FONT color="green">286</FONT> && (!Character.isLetterOrDigit(str.charAt(currentPosition))))<a name="line.286"></a> |
| <FONT color="green">287</FONT> {<a name="line.287"></a> |
| <FONT color="green">288</FONT> currentPosition++;<a name="line.288"></a> |
| <FONT color="green">289</FONT> }<a name="line.289"></a> |
| <FONT color="green">290</FONT> <a name="line.290"></a> |
| <FONT color="green">291</FONT> return str.substring(start, currentPosition);<a name="line.291"></a> |
| <FONT color="green">292</FONT> }<a name="line.292"></a> |
| <FONT color="green">293</FONT> <a name="line.293"></a> |
| <FONT color="green">294</FONT> /**<a name="line.294"></a> |
| <FONT color="green">295</FONT> * Tells if <code>nextToken</code> will throw an exception * if it is called.<a name="line.295"></a> |
| <FONT color="green">296</FONT> *<a name="line.296"></a> |
| <FONT color="green">297</FONT> * @return true if <code>nextToken</code> can be called * without throwing an exception.<a name="line.297"></a> |
| <FONT color="green">298</FONT> */<a name="line.298"></a> |
| <FONT color="green">299</FONT> boolean hasMoreTokens()<a name="line.299"></a> |
| <FONT color="green">300</FONT> {<a name="line.300"></a> |
| <FONT color="green">301</FONT> return (currentPosition >= maxPosition) ? false : true;<a name="line.301"></a> |
| <FONT color="green">302</FONT> }<a name="line.302"></a> |
| <FONT color="green">303</FONT> <a name="line.303"></a> |
| <FONT color="green">304</FONT> /**<a name="line.304"></a> |
| <FONT color="green">305</FONT> * Calculates the number of times that this tokenizer's<a name="line.305"></a> |
| <FONT color="green">306</FONT> * <code>nextToken</code> method can be called before it generates an<a name="line.306"></a> |
| <FONT color="green">307</FONT> * exception.<a name="line.307"></a> |
| <FONT color="green">308</FONT> *<a name="line.308"></a> |
| <FONT color="green">309</FONT> * @return the number of tokens remaining in the string using the current<a name="line.309"></a> |
| <FONT color="green">310</FONT> * delimiter set.<a name="line.310"></a> |
| <FONT color="green">311</FONT> * @see java.util.StringTokenizer#nextToken()<a name="line.311"></a> |
| <FONT color="green">312</FONT> */<a name="line.312"></a> |
| <FONT color="green">313</FONT> int countTokens()<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> int count = 0;<a name="line.316"></a> |
| <FONT color="green">317</FONT> int currpos = currentPosition;<a name="line.317"></a> |
| <FONT color="green">318</FONT> <a name="line.318"></a> |
| <FONT color="green">319</FONT> while (currpos < maxPosition)<a name="line.319"></a> |
| <FONT color="green">320</FONT> {<a name="line.320"></a> |
| <FONT color="green">321</FONT> int start = currpos;<a name="line.321"></a> |
| <FONT color="green">322</FONT> <a name="line.322"></a> |
| <FONT color="green">323</FONT> while ((currpos < maxPosition)<a name="line.323"></a> |
| <FONT color="green">324</FONT> && Character.isLetterOrDigit(str.charAt(currpos)))<a name="line.324"></a> |
| <FONT color="green">325</FONT> {<a name="line.325"></a> |
| <FONT color="green">326</FONT> currpos++;<a name="line.326"></a> |
| <FONT color="green">327</FONT> }<a name="line.327"></a> |
| <FONT color="green">328</FONT> <a name="line.328"></a> |
| <FONT color="green">329</FONT> if ((start == currpos)<a name="line.329"></a> |
| <FONT color="green">330</FONT> && (Character.isLetterOrDigit(str.charAt(currpos)) == false))<a name="line.330"></a> |
| <FONT color="green">331</FONT> {<a name="line.331"></a> |
| <FONT color="green">332</FONT> currpos++;<a name="line.332"></a> |
| <FONT color="green">333</FONT> }<a name="line.333"></a> |
| <FONT color="green">334</FONT> <a name="line.334"></a> |
| <FONT color="green">335</FONT> count++;<a name="line.335"></a> |
| <FONT color="green">336</FONT> }<a name="line.336"></a> |
| <FONT color="green">337</FONT> <a name="line.337"></a> |
| <FONT color="green">338</FONT> return count;<a name="line.338"></a> |
| <FONT color="green">339</FONT> }<a name="line.339"></a> |
| <FONT color="green">340</FONT> } // end NumberFormatStringTokenizer<a name="line.340"></a> |
| <FONT color="green">341</FONT> }<a name="line.341"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
