19f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 29f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 39f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * or more contributor license agreements. See the NOTICE file 49f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed with this work for additional information 59f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * regarding copyright ownership. The ASF licenses this file 69f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 79f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * you may not use this file except in compliance with the License. 89f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * You may obtain a copy of the License at 99f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Unless required by applicable law or agreed to in writing, software 139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * See the License for the specific language governing permissions and 169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * limitations under the License. 179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * $Id: FuncLang.java 468655 2006-10-28 07:12:06Z minchau $ 209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpackage org.apache.xpath.functions; 229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.dtm.DTM; 249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.XPathContext; 259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.objects.XBoolean; 269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.objects.XObject; 279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/** 299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Execute the Lang() function. 309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @xsl.usage advanced 319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpublic class FuncLang extends FunctionOneArg 339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson{ 349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson static final long serialVersionUID = -7868705139354872185L; 359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Execute the function. The function must return 389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * a valid object. 399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param xctxt The current execution context. 409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @return A valid XObject. 419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws javax.xml.transform.TransformerException 439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException 459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson String lang = m_arg0.execute(xctxt).str(); 489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson int parent = xctxt.getCurrentNode(); 499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson boolean isLang = false; 509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson DTM dtm = xctxt.getDTM(parent); 519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson while (DTM.NULL != parent) 539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if (DTM.ELEMENT_NODE == dtm.getNodeType(parent)) 559f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 569f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson int langAttr = dtm.getAttributeNode(parent, "http://www.w3.org/XML/1998/namespace", "lang"); 579f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 589f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if (DTM.NULL != langAttr) 599f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 609f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson String langVal = dtm.getNodeValue(langAttr); 619f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson // %OPT% 629f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if (langVal.toLowerCase().startsWith(lang.toLowerCase())) 639f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 649f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson int valLen = lang.length(); 659f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 669f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if ((langVal.length() == valLen) 679f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson || (langVal.charAt(valLen) == '-')) 689f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 699f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson isLang = true; 709f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 719f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 729f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 739f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson break; 749f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 759f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 769f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 779f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson parent = dtm.getParent(parent); 789f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 799f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 809f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson return isLang ? XBoolean.S_TRUE : XBoolean.S_FALSE; 819f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 829f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson} 83