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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 2003 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "Ant" and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.types.selectors; |
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import java.io.BufferedReader; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.IOException; |
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import java.io.InputStreamReader; |
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import org.apache.tools.ant.BuildException; |
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import org.apache.tools.ant.Project; |
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import org.apache.tools.ant.types.Parameter; |
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import org.apache.tools.ant.types.RegularExpression; |
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import org.apache.tools.ant.util.regexp.Regexp; |
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/** |
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* Selector that filters files based on a regular expression. |
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* |
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* @author <a href="mailto:jvandermeer2@comcast.net">Jay van der Meer</a> |
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* @since Ant 1.6 |
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*/ |
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public class ContainsRegexpSelector extends BaseExtendSelector { |
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private String userProvidedExpression = null; |
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private RegularExpression myRegExp = null; |
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private Regexp myExpression = null; |
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public final static String EXPRESSION_KEY = "expression"; |
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public ContainsRegexpSelector() { |
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} |
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public String toString() { |
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StringBuffer buf = new StringBuffer("{containsregexpselector expression: "); |
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buf.append(userProvidedExpression); |
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buf.append("}"); |
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return buf.toString(); |
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} |
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/** |
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* The regular expression used to search the file. |
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* |
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* @param regular expression that must match a line in the file to |
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* be selected. |
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*/ |
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public void setExpression(String theexpression) { |
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this.userProvidedExpression = theexpression; |
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} |
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/** |
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* When using this as a custom selector, this method will be called. |
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* It translates each parameter into the appropriate setXXX() call. |
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* |
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* @param parameters the complete set of parameters for this selector |
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*/ |
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public void setParameters(Parameter[] parameters) { |
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super.setParameters(parameters); |
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if (parameters != null) { |
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for (int i = 0; i < parameters.length; i++) { |
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String paramname = parameters[i].getName(); |
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if (EXPRESSION_KEY.equalsIgnoreCase(paramname)) { |
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setExpression(parameters[i].getValue()); |
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} else { |
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setError("Invalid parameter " + paramname); |
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} |
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} |
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} |
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} |
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/** |
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* Checks that an expression was specified. |
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* |
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*/ |
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public void verifySettings() { |
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if (userProvidedExpression == null) { |
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setError("The expression attribute is required"); |
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} |
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} |
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/** |
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* Tests a regular expression against each line of text in the file. |
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* |
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* @param basedir the base directory the scan is being done from |
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* @param filename is the name of the file to check |
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* @param file is a java.io.File object the selector can use |
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* @return whether the file should be selected or not |
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*/ |
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public boolean isSelected(File basedir, String filename, File file) { |
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String teststr = null; |
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BufferedReader in = null; |
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// throw BuildException on error |
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validate(); |
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if (file.isDirectory()) { |
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return true; |
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} |
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if (myRegExp == null) { |
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myRegExp = new RegularExpression(); |
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myRegExp.setPattern(userProvidedExpression); |
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myExpression = myRegExp.getRegexp(getProject()); |
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} |
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try { |
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in = new BufferedReader(new InputStreamReader( |
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new FileInputStream(file))); |
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teststr = in.readLine(); |
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while (teststr != null) { |
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if (myExpression.matches(teststr) == true) { |
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return true; |
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} |
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teststr = in.readLine(); |
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} |
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return false; |
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} catch (IOException ioe) { |
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throw new BuildException("Could not read file " + filename); |
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} finally { |
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try { |
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in.close(); |
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} catch (Exception e) { |
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throw new BuildException("Could not close file " + filename); |
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} |
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} |
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} |
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} |
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Stefan Bodewig