| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.console; |
| |
| import java.lang.reflect.Field; |
| |
| import org.eclipse.core.expressions.EvaluationContext; |
| import org.eclipse.core.expressions.EvaluationResult; |
| import org.eclipse.core.expressions.Expression; |
| import org.eclipse.core.expressions.ExpressionConverter; |
| import org.eclipse.core.expressions.ExpressionTagNames; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.variables.VariablesPlugin; |
| import org.eclipse.ui.IPluginContribution; |
| import org.eclipse.ui.console.ConsolePlugin; |
| import org.eclipse.ui.console.IConsole; |
| import org.eclipse.ui.console.IPatternMatchListenerDelegate; |
| |
| import com.ibm.icu.text.MessageFormat; |
| |
| public class PatternMatchListenerExtension implements IPluginContribution { |
| |
| private IConfigurationElement fConfig; |
| private Expression fEnablementExpression; |
| private String fPattern; |
| private String fQualifier; |
| private int fFlags = -1; |
| |
| public PatternMatchListenerExtension(IConfigurationElement extension) { |
| fConfig = extension; |
| } |
| |
| /* |
| * returns the integer value of the flags defined in java.util.regex.Pattern. |
| * Both <code>Pattern.MULTILINE</code> and <code>MULTILINE</code> will return |
| * the same value. |
| */ |
| public int parseFlags(String flagsElement) { |
| int val = 0; |
| if (flagsElement == null) { |
| return val; |
| } |
| |
| try { |
| flagsElement = flagsElement.replaceAll("Pattern.", ""); //$NON-NLS-1$ //$NON-NLS-2$ |
| String[] tokens = flagsElement.split("\\s\\|\\s"); //$NON-NLS-1$ |
| Class clazz = Class.forName("java.util.regex.Pattern"); //$NON-NLS-1$ |
| |
| for (int i = 0; i < tokens.length; i++) { |
| Field field = clazz.getDeclaredField(tokens[i]); |
| val |= field.getInt(null); |
| } |
| } catch (ClassNotFoundException e) { |
| ConsolePlugin.log(e); |
| } catch (NoSuchFieldException e) { |
| ConsolePlugin.log(e); |
| } catch (IllegalAccessException e) { |
| ConsolePlugin.log(e); |
| } |
| return val; |
| } |
| |
| public boolean isEnabledFor(IConsole console) throws CoreException { |
| EvaluationContext context = new EvaluationContext(null, console); |
| EvaluationResult evaluationResult = getEnablementExpression().evaluate(context); |
| return evaluationResult == EvaluationResult.TRUE; |
| } |
| |
| public IPatternMatchListenerDelegate createDelegate() throws CoreException { |
| return (IPatternMatchListenerDelegate) fConfig.createExecutableExtension("class"); //$NON-NLS-1$ |
| } |
| |
| public Expression getEnablementExpression() throws CoreException { |
| if (fEnablementExpression == null) { |
| IConfigurationElement[] elements = fConfig.getChildren(ExpressionTagNames.ENABLEMENT); |
| if (elements.length == 0) { |
| String message = MessageFormat.format("{0} " +getLocalId() + " {1} " + getPluginId() + " {2}", new String[] {ConsoleMessages.PatternMatchListenerExtension_3,ConsoleMessages.PatternMatchListenerExtension_4,ConsoleMessages.PatternMatchListenerExtension_5}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| ConsolePlugin.log(new Status(IStatus.WARNING, ConsolePlugin.getUniqueIdentifier(), IStatus.OK, message, null)); |
| } |
| IConfigurationElement enablement = elements.length > 0 ? elements[0] : null; |
| |
| if (enablement != null) { |
| fEnablementExpression = ExpressionConverter.getDefault().perform(enablement); |
| } |
| } |
| return fEnablementExpression; |
| } |
| |
| /* |
| * returns the regular expression to be matched. |
| */ |
| public String getPattern() { |
| if (fPattern == null) { |
| fPattern = fConfig.getAttribute("regex"); //$NON-NLS-1$ |
| try { |
| fPattern = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(fPattern, false); |
| } catch (CoreException e) { |
| ConsolePlugin.log(e); |
| } |
| } |
| return fPattern; |
| } |
| |
| /* |
| * returns the flags to be used by <code>Pattern.compile(pattern, flags)</code> |
| */ |
| public int getCompilerFlags() { |
| if(fFlags < 0) { |
| String flagsAttribute = fConfig.getAttribute("flags"); //$NON-NLS-1$ |
| fFlags = parseFlags(flagsAttribute); |
| } |
| return fFlags; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IPluginContribution#getLocalId() |
| */ |
| public String getLocalId() { |
| return fConfig.getAttribute("id"); //$NON-NLS-1$ |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IPluginContribution#getPluginId() |
| */ |
| public String getPluginId() { |
| return fConfig.getContributor().getName(); |
| } |
| |
| public String getQuickPattern() { |
| if (fQualifier == null) { |
| fQualifier = fConfig.getAttribute("qualifier"); //$NON-NLS-1$ |
| try { |
| if (fQualifier != null) { |
| fQualifier = VariablesPlugin.getDefault().getStringVariableManager().performStringSubstitution(fQualifier, false); |
| } |
| } catch (CoreException e) { |
| ConsolePlugin.log(e); |
| } |
| } |
| return fQualifier; |
| } |
| } |