The Android Open Source Project | 0eec464 | 2012-04-01 00:00:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | */ |
| 18 | /* |
| 19 | * $Id: FuncFormatNumb.java 468643 2006-10-28 06:56:03Z minchau $ |
| 20 | */ |
| 21 | package org.apache.xalan.templates; |
| 22 | |
| 23 | import javax.xml.transform.ErrorListener; |
| 24 | import javax.xml.transform.TransformerException; |
| 25 | |
| 26 | import org.apache.xalan.res.XSLMessages; |
| 27 | import org.apache.xalan.res.XSLTErrorResources; |
| 28 | import org.apache.xml.utils.QName; |
| 29 | import org.apache.xml.utils.SAXSourceLocator; |
| 30 | import org.apache.xpath.Expression; |
| 31 | import org.apache.xpath.XPathContext; |
| 32 | import org.apache.xpath.functions.Function3Args; |
| 33 | import org.apache.xpath.functions.WrongNumberArgsException; |
| 34 | import org.apache.xpath.objects.XObject; |
| 35 | import org.apache.xpath.objects.XString; |
| 36 | |
| 37 | /** |
| 38 | * Execute the FormatNumber() function. |
| 39 | * @xsl.usage advanced |
| 40 | */ |
| 41 | public class FuncFormatNumb extends Function3Args |
| 42 | { |
| 43 | static final long serialVersionUID = -8869935264870858636L; |
| 44 | |
| 45 | /** |
| 46 | * Execute the function. The function must return |
| 47 | * a valid object. |
| 48 | * @param xctxt The current execution context. |
| 49 | * @return A valid XObject. |
| 50 | * |
| 51 | * @throws javax.xml.transform.TransformerException |
| 52 | */ |
| 53 | public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException |
| 54 | { |
| 55 | |
| 56 | // A bit of an ugly hack to get our context. |
| 57 | ElemTemplateElement templElem = |
| 58 | (ElemTemplateElement) xctxt.getNamespaceContext(); |
| 59 | StylesheetRoot ss = templElem.getStylesheetRoot(); |
| 60 | java.text.DecimalFormat formatter = null; |
| 61 | java.text.DecimalFormatSymbols dfs = null; |
| 62 | double num = getArg0().execute(xctxt).num(); |
| 63 | String patternStr = getArg1().execute(xctxt).str(); |
| 64 | |
| 65 | // TODO: what should be the behavior here?? |
| 66 | if (patternStr.indexOf(0x00A4) > 0) |
| 67 | ss.error(XSLTErrorResources.ER_CURRENCY_SIGN_ILLEGAL); // currency sign not allowed |
| 68 | |
| 69 | // this third argument is not a locale name. It is the name of a |
| 70 | // decimal-format declared in the stylesheet!(xsl:decimal-format |
| 71 | try |
| 72 | { |
| 73 | Expression arg2Expr = getArg2(); |
| 74 | |
| 75 | if (null != arg2Expr) |
| 76 | { |
| 77 | String dfName = arg2Expr.execute(xctxt).str(); |
| 78 | QName qname = new QName(dfName, xctxt.getNamespaceContext()); |
| 79 | |
| 80 | dfs = ss.getDecimalFormatComposed(qname); |
| 81 | |
| 82 | if (null == dfs) |
| 83 | { |
| 84 | warn(xctxt, XSLTErrorResources.WG_NO_DECIMALFORMAT_DECLARATION, |
| 85 | new Object[]{ dfName }); //"not found!!! |
| 86 | |
| 87 | //formatter = new java.text.DecimalFormat(patternStr); |
| 88 | } |
| 89 | else |
| 90 | { |
| 91 | |
| 92 | //formatter = new java.text.DecimalFormat(patternStr, dfs); |
| 93 | formatter = new java.text.DecimalFormat(); |
| 94 | |
| 95 | formatter.setDecimalFormatSymbols(dfs); |
| 96 | formatter.applyLocalizedPattern(patternStr); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | //else |
| 101 | if (null == formatter) |
| 102 | { |
| 103 | |
| 104 | // look for a possible default decimal-format |
| 105 | dfs = ss.getDecimalFormatComposed(new QName("")); |
| 106 | |
| 107 | if (dfs != null) |
| 108 | { |
| 109 | formatter = new java.text.DecimalFormat(); |
| 110 | |
| 111 | formatter.setDecimalFormatSymbols(dfs); |
| 112 | formatter.applyLocalizedPattern(patternStr); |
| 113 | } |
| 114 | else |
| 115 | { |
| 116 | dfs = new java.text.DecimalFormatSymbols(java.util.Locale.US); |
| 117 | |
| 118 | dfs.setInfinity(Constants.ATTRVAL_INFINITY); |
| 119 | dfs.setNaN(Constants.ATTRVAL_NAN); |
| 120 | |
| 121 | formatter = new java.text.DecimalFormat(); |
| 122 | |
| 123 | formatter.setDecimalFormatSymbols(dfs); |
| 124 | |
| 125 | if (null != patternStr) |
| 126 | formatter.applyLocalizedPattern(patternStr); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | return new XString(formatter.format(num)); |
| 131 | } |
| 132 | catch (Exception iae) |
| 133 | { |
| 134 | templElem.error(XSLTErrorResources.ER_MALFORMED_FORMAT_STRING, |
| 135 | new Object[]{ patternStr }); |
| 136 | |
| 137 | return XString.EMPTYSTRING; |
| 138 | |
| 139 | //throw new XSLProcessorException(iae); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Warn the user of a problem. |
| 145 | * |
| 146 | * @param xctxt The XPath runtime state. |
| 147 | * @param msg Warning message key |
| 148 | * @param args Arguments to be used in warning message |
| 149 | * @throws XSLProcessorException thrown if the active ProblemListener and XPathContext decide |
| 150 | * the error condition is severe enough to halt processing. |
| 151 | * |
| 152 | * @throws javax.xml.transform.TransformerException |
| 153 | */ |
| 154 | public void warn(XPathContext xctxt, String msg, Object args[]) |
| 155 | throws javax.xml.transform.TransformerException |
| 156 | { |
| 157 | |
| 158 | String formattedMsg = XSLMessages.createWarning(msg, args); |
| 159 | ErrorListener errHandler = xctxt.getErrorListener(); |
| 160 | |
| 161 | errHandler.warning(new TransformerException(formattedMsg, |
| 162 | (SAXSourceLocator)xctxt.getSAXLocator())); |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Overide the superclass method to allow one or two arguments. |
| 167 | * |
| 168 | * |
| 169 | * @param argNum Number of arguments passed in |
| 170 | * |
| 171 | * @throws WrongNumberArgsException |
| 172 | */ |
| 173 | public void checkNumberArgs(int argNum) throws WrongNumberArgsException |
| 174 | { |
| 175 | if ((argNum > 3) || (argNum < 2)) |
| 176 | reportWrongNumberArgs(); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Constructs and throws a WrongNumberArgException with the appropriate |
| 181 | * message for this function object. |
| 182 | * |
| 183 | * @throws WrongNumberArgsException |
| 184 | */ |
| 185 | protected void reportWrongNumberArgs() throws WrongNumberArgsException { |
| 186 | throw new WrongNumberArgsException(XSLMessages.createMessage(XSLTErrorResources.ER_TWO_OR_THREE, null)); //"2 or 3"); |
| 187 | } |
| 188 | } |