Added a class that is easier to use than the parser itself for delombok, as well as code to process entire directories at a time.

Also removed duplication from the testcases.

.classpath

@@ -6,6 +6,7 @@
 	<classpathentry kind="src" path="src/delombok"/>
 	<classpathentry kind="src" path="experimental/src"/>
 	<classpathentry kind="src" path="test/delombok/src"/>
+	<classpathentry kind="src" path="test/core/src"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="lib" path="deps/lombok/org.eclipse.jdt.core_3.5.0.v_963.jar"/>
 	<classpathentry kind="lib" path="deps/lombok/org.eclipse.jdt.ui_3.5.1.r351_v20090821-0800.jar"/>

src/delombok/lombok/delombok/Delombok.java

@@ -0,0 +1,155 @@
+package lombok.delombok;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.PrintStream;
+import java.io.Writer;
+import java.nio.charset.Charset;
+import java.nio.charset.UnsupportedCharsetException;
+
+import lombok.delombok.CommentPreservingParser.ParseResult;
+
+public class Delombok {
+	private Charset charset = Charset.defaultCharset();
+	private CommentPreservingParser parser = new CommentPreservingParser();
+	private PrintStream feedback = System.err;
+	private boolean verbose;
+	private boolean force = false;
+	
+	/** If null, output to standard out. */
+	private File output = null;
+	
+	public void setCharset(String charsetName) throws UnsupportedCharsetException {
+		charset = Charset.forName(charsetName);
+	}
+	
+	public void setForceProcess(boolean force) {
+		this.force = force;
+	}
+	
+	public void setFeedback(PrintStream feedback) {
+		this.feedback = feedback;
+	}
+	
+	public void setVerbose(boolean verbose) {
+		this.verbose = verbose;
+	}
+	
+	public void setOutput(File dir) {
+		if (dir.isFile()) throw new IllegalArgumentException(
+				"DELOMBOK: delombok will only write to a directory. " +
+				"If you want to delombok a single file, use -p to output to standard output, then redirect this to a file:\n" +
+				"delombok MyJavaFile.java -p >MyJavaFileDelombok.java");
+		output = dir;
+	}
+	
+	public void setOutputToStandardOut() {
+		this.output = null;
+	}
+	
+	public void delombok(File base) throws IOException {
+		delombok0(base, "", 0);
+	}
+	
+	private void delombok0(File base, String suffix, int loop) throws IOException {
+		File dir = suffix.isEmpty() ? base : new File(base, suffix);
+		String name = suffix + File.separator + dir.getName();
+		
+		if (dir.isDirectory()) {
+			if (loop >= 100) {
+				feedback.printf("Over 100 subdirectories? I'm guessing there's a loop in your directory structure. Skipping: %s\n", suffix);
+			} else {
+				dir.mkdir();
+				delombok0(base, name, loop + 1);
+			}
+		} else if (dir.isFile()) {
+			String extension = getExtension(dir);
+			if (extension.equals(".java")) delombok(base, name);
+			else if (extension.equals(".class")) skipClass(name);
+			else copy(base, name);
+		} else {
+			feedback.printf("Skipping %s because it is a special file type.\n", canonical(dir));
+		}
+	}
+	
+	private void skipClass(String fileName) {
+		if (verbose) feedback.printf("Skipping class file: %s\n", fileName);
+	}
+	
+	private void copy(File base, String fileName) throws IOException {
+		if (output == null) {
+			feedback.printf("Skipping resource file: %s\n", fileName);
+			return;
+		}
+		if (verbose) feedback.printf("Copying resource file: %s\n", fileName);
+		byte[] b = new byte[65536];
+		FileInputStream in = new FileInputStream(new File(base, fileName));
+		try {
+			FileOutputStream out = new FileOutputStream(new File(output, fileName));
+			try {
+				while (true) {
+					int r = in.read(b);
+					if (r == -1) break;
+					out.write(b, 0, r);
+				}
+			} finally {
+				out.close();
+			}
+		} finally {
+			in.close();
+		}
+	}
+	
+	public void delombok(String file, Writer writer) throws IOException {
+		ParseResult result = parser.parse(file, force);
+		
+		result.print(writer);
+	}
+	
+	public void delombok(File base, String fileName) throws IOException {
+		if (output != null && canonical(base).equals(canonical(output))) throw new IOException(
+				"DELOMBOK: Output file and input file refer to the same filesystem location. Specify a separate path for output.");
+		
+		ParseResult result = parser.parse(new File(base, fileName).getAbsolutePath(), force);
+		
+		if (verbose) feedback.printf("File: %s [%s]\n", fileName, result.isChanged() ? "delombok-ed" : "unchanged");
+		
+		Writer rawWriter = output == null ? createStandardOutWriter() : createFileWriter(output, fileName);
+		BufferedWriter writer = new BufferedWriter(rawWriter);
+		
+		try {
+			result.print(writer);
+		} finally {
+			writer.close();
+		}
+	}
+	
+	private static String canonical(File dir) {
+		try {
+			return dir.getCanonicalPath();
+		} catch (Exception e) {
+			return dir.getAbsolutePath();
+		}
+	}
+	
+	private static String getExtension(File dir) {
+		String name = dir.getName();
+		int idx = name.lastIndexOf('.');
+		return idx == -1 ? "" : name.substring(idx+1);
+	}
+	
+	private Writer createFileWriter(File base, String fileName) throws IOException {
+		File outFile = new File(base, fileName);
+		outFile.getParentFile().mkdirs();
+		FileOutputStream out = new FileOutputStream(outFile);
+		return new OutputStreamWriter(out, charset);
+	}
+	
+	private Writer createStandardOutWriter() {
+		return new OutputStreamWriter(System.out, charset);
+	}
+}

test/core/src/lombok/TestViaDelombok.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright © 2009 Reinier Zwitserloot and Roel Spilker.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok;
+
+import static org.junit.Assert.fail;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+import lombok.delombok.Delombok;
+
+public class TestViaDelombok {
+	private static Delombok delombok = new Delombok();
+	
+	private static final String LINE_SEPARATOR = System.getProperty("line.separator");
+	
+	public static void runComparison(File beforeDir, File afterDir) throws IOException {
+		File[] listFiles = beforeDir.listFiles();
+		
+		for (File file : listFiles) {
+			delombok.setVerbose(false);
+			delombok.setForceProcess(true);
+			delombok.setCharset("UTF-8");
+			StringWriter writer = new StringWriter();
+			delombok.delombok(file.getAbsolutePath(), writer);
+			compare(file.getName(), readAfter(afterDir, file), writer.toString());
+		}
+	}
+	
+	private static void compare(String name, String expectedFile, String actualFile) {
+		String[] expectedLines = expectedFile.split("(\\r?\\n)");
+		String[] actualLines = actualFile.split("(\\r?\\n)");
+		if (actualLines[0].startsWith("// Generated by delombok at ")) {
+			actualLines[0] = "";
+		}
+		expectedLines = removeBlanks(expectedLines);
+		actualLines = removeBlanks(actualLines);
+		int size = Math.min(expectedLines.length, actualLines.length);
+		for (int i = 0; i < size; i++) {
+			String expected = expectedLines[i];
+			String actual = actualLines[i];
+			if (!expected.equals(actual)) {
+				fail(String.format("Difference in line %s(%d):\n`%s`\n`%s`\n", name, i, expected, actual));
+			}
+		}
+		if (expectedLines.length > actualLines.length) {
+			fail(String.format("Missing line %s(%d): %s\n", name, size, expectedLines[size]));
+		}
+		if (expectedLines.length < actualLines.length) {
+			fail(String.format("Extra line %s(%d): %s\n", name, size, actualLines[size]));
+		}
+	}
+	
+	private static String readAfter(File afterDir, File file) throws IOException {
+		BufferedReader reader = new BufferedReader(new FileReader(new File(afterDir, file.getName())));
+		StringBuilder result = new StringBuilder();
+		String line;
+		while ((line = reader.readLine()) != null) {
+			result.append(line);
+			result.append(LINE_SEPARATOR);
+		}
+		reader.close();
+		return result.toString();
+	}
+	
+	private static String[] removeBlanks(String[] in) {
+		List<String> out = new ArrayList<String>();
+		for (String s : in) {
+			if (!s.trim().isEmpty()) out.add(s);
+		}
+		return out.toArray(new String[0]);
+	}
+}

test/delombok/src/lombok/delombok/TestLombokFiles.java

@@ -21,77 +21,18 @@
  */
 package lombok.delombok;
 
-import static org.junit.Assert.fail;
-import static lombok.delombok.TestSourceFiles.removeBlanks;
-
-import java.io.BufferedReader;
 import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
-import java.io.StringWriter;
 
-import lombok.delombok.CommentPreservingParser.ParseResult;
+import lombok.TestViaDelombok;
 
-import org.junit.BeforeClass;
 import org.junit.Test;
 
 public class TestLombokFiles {
-	private static CommentPreservingParser parser;
-	
-	private static final File BEFORE_FOLDER = new File("test/lombok/resource/before");
-	private static final File AFTER_FOLDER = new File("test/lombok/resource/after");
-	
-	private static final String LINE_SEPARATOR = System.getProperty("line.separator");
-	
-	@BeforeClass
-	public static void init() {
-		parser = new CommentPreservingParser();
-	}
+	private static final File BEFORE_DIR = new File("test/lombok/resource/before");
+	private static final File AFTER_DIR = new File("test/lombok/resource/after");
 	
 	@Test
 	public void testSources() throws Exception {
-		File[] listFiles = BEFORE_FOLDER.listFiles();
-		for (File file : listFiles) {
-			ParseResult parseResult = parser.parse(file.toString(), true);
-			StringWriter writer = new StringWriter();
-			parseResult.print(writer);
-			compare(file.getName(), readAfter(file), writer.toString());
-		}
-	}
-	
-	private void compare(String name, String expectedFile, String actualFile) {
-		String[] expectedLines = expectedFile.split("(\\r?\\n)");
-		String[] actualLines = actualFile.split("(\\r?\\n)");
-		if (actualLines[0].startsWith("// Generated by delombok at ")) {
-			actualLines[0] = "";
-		}
-		expectedLines = removeBlanks(expectedLines);
-		actualLines = removeBlanks(actualLines);
-		int size = Math.min(expectedLines.length, actualLines.length);
-		for (int i = 0; i < size; i++) {
-			String expected = expectedLines[i];
-			String actual = actualLines[i];
-			if (!expected.equals(actual)) {
-				fail(String.format("Difference in line %s(%d):\n`%s`\n`%s`\n", name, i, expected, actual));
-			}
-		}
-		if (expectedLines.length > actualLines.length) {
-			fail(String.format("Missing line %s(%d): %s\n", name, size, expectedLines[size]));
-		}
-		if (expectedLines.length < actualLines.length) {
-			fail(String.format("Extra line %s(%d): %s\n", name, size, actualLines[size]));
-		}
-	}
-	
-	private String readAfter(File file) throws IOException {
-		BufferedReader reader = new BufferedReader(new FileReader(new File(AFTER_FOLDER, file.getName())));
-		StringBuilder result = new StringBuilder();
-		String line;
-		while ((line = reader.readLine()) != null) {
-			result.append(line);
-			result.append(LINE_SEPARATOR);
-		}
-		reader.close();
-		return result.toString();
+		TestViaDelombok.runComparison(BEFORE_DIR, AFTER_DIR);
 	}
 }

test/delombok/src/lombok/delombok/TestSourceFiles.java

@@ -21,86 +21,18 @@
  */
 package lombok.delombok;
 
-import static org.junit.Assert.fail;
-
-import java.io.BufferedReader;
 import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
-import java.io.StringWriter;
-import java.util.ArrayList;
-import java.util.List;
 
-import lombok.delombok.CommentPreservingParser.ParseResult;
+import lombok.TestViaDelombok;
 
-import org.junit.BeforeClass;
 import org.junit.Test;
 
 public class TestSourceFiles {
-	private static CommentPreservingParser parser;
-	
-	private static final File BEFORE_FOLDER = new File("test/delombok/resource/before");
-	private static final File AFTER_FOLDER = new File("test/delombok/resource/after");
-	
-	private static final String LINE_SEPARATOR = System.getProperty("line.separator");
-	
-	@BeforeClass
-	public static void init() {
-		parser = new CommentPreservingParser();
-	}
+	private static final File BEFORE_DIR = new File("test/delombok/resource/before");
+	private static final File AFTER_DIR = new File("test/delombok/resource/after");
 	
 	@Test
 	public void testSources() throws Exception {
-		File[] listFiles = BEFORE_FOLDER.listFiles();
-		for (File file : listFiles) {
-			ParseResult parseResult = parser.parse(file.toString(), true);
-			StringWriter writer = new StringWriter();
-			parseResult.print(writer);
-			compare(file.getName(), readAfter(file), writer.toString());
-		}
-	}
-	
-	static String[] removeBlanks(String[] in) {
-		List<String> out = new ArrayList<String>();
-		for (String s : in) {
-			if (!s.trim().isEmpty()) out.add(s);
-		}
-		return out.toArray(new String[0]);
-	}
-	
-	private void compare(String name, String expectedFile, String actualFile) {
-		String[] expectedLines = expectedFile.split("(\\r?\\n)");
-		String[] actualLines = actualFile.split("(\\r?\\n)");
-		if (actualLines[0].startsWith("// Generated by delombok at ")) {
-			actualLines[0] = "";
-		}
-		expectedLines = removeBlanks(expectedLines);
-		actualLines = removeBlanks(actualLines);
-		int size = Math.min(expectedLines.length, actualLines.length);
-		for (int i = 0; i < size; i++) {
-			String expected = expectedLines[i];
-			String actual = actualLines[i];
-			if (!expected.equals(actual)) {
-				fail(String.format("Difference in line %s(%d):\nExpected `%s`\nGot `%s`\n", name, i, expected, actual));
-			}
-		}
-		if (expectedLines.length > actualLines.length) {
-			fail(String.format("Missing line %s(%d): %s\n", name, size, expectedLines[size]));
-		}
-		if (expectedLines.length < actualLines.length) {
-			fail(String.format("Extra line %s(%d): %s\n", name, size, actualLines[size]));
-		}
-	}
-	
-	private String readAfter(File file) throws IOException {
-		BufferedReader reader = new BufferedReader(new FileReader(new File(AFTER_FOLDER, file.getName())));
-		StringBuilder result = new StringBuilder();
-		String line;
-		while ((line = reader.readLine()) != null) {
-			result.append(line);
-			result.append(LINE_SEPARATOR);
-		}
-		reader.close();
-		return result.toString();
+		TestViaDelombok.runComparison(BEFORE_DIR, AFTER_DIR);
 	}
 }