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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) 2002 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 "The Jakarta Project", "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.taskdefs; |
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import org.apache.tools.ant.Task; |
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import org.apache.tools.ant.Project; |
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import org.apache.tools.ant.BuildException; |
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import org.apache.tools.ant.types.AntFilterReader; |
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import org.apache.tools.ant.types.FilterReaderSet; |
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import org.apache.tools.ant.types.Parameter; |
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import org.apache.tools.ant.types.Parameterizable; |
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import java.io.*; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.InvocationTargetException; |
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import java.util.Vector; |
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/** |
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* Load a file's contents as Ant Properties. |
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* |
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* @author <a href="mailto:umagesh@apache.org">Magesh Umasankar</a> |
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* @created 20 February 2002 |
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*/ |
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public final class LoadProperties extends Task { |
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/** |
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* Source file |
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*/ |
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private File srcFile = null; |
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/** |
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* Holds filterReaderSets |
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*/ |
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private final Vector filterReaderSets = new Vector(); |
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/** |
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* Sets the srcfile attribute. |
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* |
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* @param srcFile The new SrcFile value |
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*/ |
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public final void setSrcFile(final File srcFile) { |
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this.srcFile = srcFile; |
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} |
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/** |
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* read in a source file's contents and load them up as Ant properties |
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* |
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* @exception BuildException if something goes wrong with the build |
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*/ |
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public final void execute() throws BuildException { |
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//validation |
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if (srcFile == null) { |
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throw new BuildException("Source file not defined."); |
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} |
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if (!srcFile.exists()) { |
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throw new BuildException("Source file does not exist."); |
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} |
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if (!srcFile.isFile()) { |
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throw new BuildException("Source file is not a file."); |
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} |
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FileInputStream fis = null; |
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BufferedInputStream bis = null; |
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Reader instream = null; |
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try { |
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final long len = srcFile.length(); |
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final int size=(int) len; |
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//open up the file |
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fis = new FileInputStream(srcFile); |
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bis = new BufferedInputStream(fis); |
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instream = new InputStreamReader(bis); |
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String text = processStream(instream, size); |
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if (!text.endsWith("\n")) { |
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text = text + "\n"; |
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} |
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int index = 0; |
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if (text != null) { |
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while (index != -1) { |
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int oldIndex = index; |
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index = text.indexOf("\n", oldIndex); |
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if (index != -1) { |
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String line = text.substring(oldIndex, index); |
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if (line.endsWith("\r")) { |
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line = line.substring(0, line.length() - 1); |
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} |
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int equalIndex = line.indexOf("="); |
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int spaceIndex = line.indexOf(" "); |
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int sepIndex = -1; |
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if (equalIndex != -1 || spaceIndex != -1) { |
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if (equalIndex == -1) { |
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sepIndex = spaceIndex; |
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} else if (spaceIndex == -1) { |
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sepIndex = equalIndex; |
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} else { |
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sepIndex = Math.min(spaceIndex, equalIndex); |
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} |
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} |
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if (sepIndex != -1) { |
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String key = line.substring(0, sepIndex); |
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String value = line.substring(sepIndex + 1); |
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if (value != null && value.trim().length() > 0) { |
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project.setNewProperty(key, value); |
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} |
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} |
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++index; |
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} |
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} |
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} |
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} catch (final IOException ioe) { |
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final String message = "Unable to load file: " + ioe.toString(); |
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throw new BuildException(message, ioe, location); |
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} catch (final BuildException be) { |
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throw be; |
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} finally { |
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try { |
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if (fis != null) { |
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fis.close(); |
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} |
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} catch (IOException ioex) { |
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//ignore |
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} |
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} |
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} |
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/** |
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* Process the input by passing it through the reader chain. |
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*/ |
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private final String processStream(final Reader inputReader, final int size) |
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throws BuildException, IOException { |
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Reader instream = inputReader; |
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final char[] buffer = new char[size]; |
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final int filterReadersCount = filterReaderSets.size(); |
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final Vector finalFilters = new Vector(); |
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for (int i = 0; i < filterReadersCount; i++) { |
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final FilterReaderSet filterset = |
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(FilterReaderSet) filterReaderSets.elementAt(i); |
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final Vector filterReaders = filterset.getFilterReaders(); |
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final int readerCount = filterReaders.size(); |
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for (int j = 0; j < readerCount; j++) { |
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final AntFilterReader afr = |
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(AntFilterReader) filterReaders.elementAt(j); |
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finalFilters.addElement(afr); |
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} |
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} |
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final int filtersCount = finalFilters.size(); |
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if (filtersCount > 0) { |
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for (int i = 0; i < filtersCount; i++) { |
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final AntFilterReader filter = |
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(AntFilterReader) finalFilters.elementAt(i); |
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final String className = filter.getClassName(); |
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if (className != null) { |
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try { |
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final Class clazz = Class.forName(className); |
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if (clazz != null) { |
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final Constructor[] constructors = |
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clazz.getConstructors(); |
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final Reader[] rdr = {instream}; |
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instream = |
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(Reader) constructors[0].newInstance(rdr); |
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if (Parameterizable.class.isAssignableFrom(clazz)) { |
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final Parameter[] params = filter.getParams(); |
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((Parameterizable) |
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instream).setParameters(params); |
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} |
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} |
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} catch (final ClassNotFoundException cnfe) { |
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throw new BuildException(cnfe, location); |
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} catch (final InstantiationException ie) { |
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throw new BuildException(ie, location); |
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} catch (final IllegalAccessException iae) { |
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throw new BuildException(iae, location); |
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} catch (final InvocationTargetException ite) { |
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throw new BuildException(ite, location); |
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} |
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} |
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} |
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} |
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int bufferLength = 0; |
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String text = null; |
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while (bufferLength != -1) { |
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bufferLength = instream.read(buffer); |
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if (bufferLength != -1) { |
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if (text == null) { |
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text = new String(buffer, 0, bufferLength); |
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} else { |
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text += new String(buffer, 0, bufferLength); |
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} |
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} |
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} |
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return text; |
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} |
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/** |
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* Add the FilterReaderSet element. |
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*/ |
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public final void addFilterReaderSet(FilterReaderSet filter) { |
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filterReaderSets.addElement(filter); |
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} |
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//end class |
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} |
Magesh Umasankar