| /* |
| * Copyright 2005-2008 Sascha Weinreuter |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.intellij.lang.xpath.xslt.impl; |
| |
| import org.intellij.lang.xpath.context.XPathVersion; |
| import org.intellij.lang.xpath.xslt.XsltSupport; |
| |
| import com.intellij.util.xml.NanoXmlUtil; |
| |
| public class XsltChecker extends NanoXmlUtil.IXMLBuilderAdapter { |
| public enum LanguageLevel { NONE(null), V1(XPathVersion.V1), V2(XPathVersion.V2); |
| private final XPathVersion myVersion; |
| |
| LanguageLevel(XPathVersion version) { |
| myVersion = version; |
| } |
| |
| public XPathVersion getXPathVersion() { |
| return myVersion; |
| } |
| } |
| |
| enum State { |
| YES, SIMPLIFIED, NO, POSSIBLY, POSSIBLY_SIMPLIFIED_SYNTAX, VERSION2 |
| } |
| |
| private State myState; |
| |
| @Override |
| public void startElement(String name, String nsPrefix, String nsURI, String systemID, int lineNr) throws Exception { |
| if (("stylesheet".equals(name) || "transform".equals(name)) && XsltSupport.XSLT_NS.equals(nsURI)) { |
| myState = State.POSSIBLY; |
| } else { |
| myState = State.POSSIBLY_SIMPLIFIED_SYNTAX; |
| } |
| } |
| |
| @Override |
| public void addAttribute(String key, String nsPrefix, String nsURI, String value, String type) throws Exception { |
| if (myState == State.POSSIBLY) { |
| if ("version".equals(key) && (nsURI == null || nsURI.length() == 0)) { |
| checkVersion(value, State.YES); |
| stop(); |
| } |
| } else if (myState == State.POSSIBLY_SIMPLIFIED_SYNTAX) { |
| if ("version".equals(key) && XsltSupport.XSLT_NS.equals(nsURI)) { |
| checkVersion(value, State.SIMPLIFIED); |
| stop(); |
| } |
| } |
| } |
| |
| private void checkVersion(String value, State yes) { |
| if (isVersion1(value)) { |
| myState = yes; |
| } else if (isVersion2(value)) { |
| myState = State.VERSION2; |
| } else { |
| myState = State.NO; |
| } |
| } |
| |
| public static boolean isSupportedVersion(String value) { |
| return isVersion1(value) || isVersion2(value); |
| } |
| |
| public static boolean isVersion1(String value) { |
| return "1.0".equals(value) || "1.1".equals(value); |
| } |
| |
| public static boolean isVersion2(String value) { |
| return "2.0".equals(value); |
| } |
| |
| @Override |
| public void elementAttributesProcessed(String name, String nsPrefix, String nsURI) throws Exception { |
| stop(); // the first element (or its attrs) decides - stop here |
| } |
| |
| @Override |
| public void endElement(String name, String nsPrefix, String nsURI) throws Exception { |
| stop(); // the first element (or its attrs) decides - stop here |
| } |
| |
| public boolean isFullySupportedXsltFile() { |
| return myState == State.YES || myState == State.SIMPLIFIED; |
| } |
| |
| public boolean isSimplifiedSyntax() { |
| return myState == State.SIMPLIFIED; |
| } |
| |
| public static LanguageLevel getLanguageLevel(String value) { |
| if (value == null) { |
| return LanguageLevel.NONE; |
| } |
| if (isVersion1(value)) { |
| return LanguageLevel.V1; |
| } |
| if (isVersion2(value)) { |
| return LanguageLevel.V2; |
| } |
| return LanguageLevel.NONE; |
| } |
| |
| public LanguageLevel getLanguageLevel() { |
| return myState == State.VERSION2 ? LanguageLevel.V2 : |
| (isFullySupportedXsltFile() ? LanguageLevel.V1 : LanguageLevel.NONE); |
| } |
| } |