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/* *******************************************************************
* Copyright (c) 1999-2001 Xerox Corporation,
* 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Common Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* Xerox/PARC initial implementation
* ******************************************************************/
package org.aspectj.testing.taskdefs;
import java.io.File;
import java.io.IOException;
import org.apache.tools.ant.*;
/**
* Wrap file comparison utility as ant taskdef.
* (Whitespace semantics track the String.trim() and StringTokenizer class.)
* <table>
* <tr><td>lhsFile</td><td>path to left-hand-side file to compare (required)</td></tr>
* <tr><td>rhsFile</td><td>path to right-hand-side file to compare (required)</td></tr>
* <tr><td>output</td><td>path to output file (System.out otherwise)</td></tr>
* <tr><td>ignoreCase</td><td>convert to uppercase before comparison (boolean yes/no)</td></tr>
* <tr><td>trimWhitespace</td><td>ignore leading/trailing white space(boolean yes/no)</td></tr>
* <tr><td>collapseWhitespace</td><td>convert all white space runs to a single space (boolean yes/no)</td></tr>
* <tr><td>filterSpec</td><td>all specifications for a filter, based on the RegexpFilter class
* (currently, syntax: <code>{file | {-i|-t|-b|-s <pattern>|-s <patternFile>}..}</code></td></tr>
* </table>
* @see org.aspectj.testing.compare.RegexpFilter#init(String[],RegexpFilter)
*/
public class CompareFiles extends org.apache.tools.ant.Task {
/*
Unable to implement multiple inheritance except by delegation:
- Task subclass must be outer or ant throws InstantiationException
- if/since outer, the subclass getter/setters cannot refer to
protected fields in worker superclass absent inner worker
subclass delegate methods. yuck.
- getting access errors when trying to use the RuntimeConfigurable
to initialize the task. Looking at the Ant code, it does not
appear to be used for tasks?? I found none using it and the
initialization seems wrong...
*/
final private Worker worker;
public CompareFiles() {
worker = new Worker();
}
protected File lhsFile;
protected File rhsFile;
public void setLhsFile(File file) { lhsFile = file; }
public void setRhsFile(File file) { rhsFile = file; }
public void setOutput(File file) { worker.setOutput(file); }
public void setFilterSpec(String str) { worker.setFilterSpec(str); }
public void setCollapseWhitespace(boolean ok) { worker.setCollapseWhitespace(ok); }
public void setTrimWhitespace(boolean ok) { worker.setTrimWhitespace(ok); }
public void setIgnoreCase(boolean ok) { worker.setIgnoreCase(ok); }
public void execute() throws BuildException {
if (!lhsFile.canRead()) {
log("FAIL taskdefs.CompareFiles: bad lhsFile: " + lhsFile);
} else if (!rhsFile.canRead()) {
log("FAIL taskdefs.CompareFiles: bad rhsFile: " + rhsFile);
} else if (rhsFile.isDirectory() != lhsFile.isDirectory()) {
log("FAIL taskdefs.CompareFiles: both must be dirs."
+ " lhsFile=" + lhsFile
+ " rhsFile=" + rhsFile);
} else {
worker.dodiff(lhsFile, rhsFile);
}
}
} // class CompareFiles
/** worker class exposes state and converts Exception to BuildException */
class Worker extends org.aspectj.testing.compare.CompareFiles {
String spec = null;
public void setOutput(File file) { output = file; }
public void setCollapseWhitespace(boolean ok) { collapseWhitespace = ok; }
public void setTrimWhitespace(boolean ok) { trimWhitespace = ok; }
public void setIgnoreCase(boolean ok) { ignoreCase = ok; }
public void setFilterSpec(String str) { spec = str; }
public void initFilter() {
if (null != spec) {
initFilter(spec, false);
}
}
public void dodiff(File lhsFile, File rhsFile) throws BuildException {
initFilter();
try {
super.diff(lhsFile, rhsFile);
} catch (IOException t) {
String s = t.getClass().getName() + ": " + t.getMessage();
throw new BuildException(s, t);
} catch (Throwable e) {
String s = e.getClass().getName() + ": " + e.getMessage();
throw new BuildException("Error - " + s, e);
}
}
} // class CompareFiles$Worker
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