Merge pull request 'v0.0.4' (#8) from dev into master

Reviewed-on: #8

src/main/java/com/imyeyu/compress/CompressType.java

@@ -58,8 +58,8 @@ public enum CompressType {
 	 * @return 压缩操作对象
 	 * @throws Exception 实例化失败
 	 */
-	public Compressor<?> ofCompress(String fromPath) throws Exception {
+	public Compressor<?> compressFrom(String fromPath) throws Exception {
-		return getCompressor().from(fromPath);
+		return getCompressor().of(fromPath);
 	}
 
 	/**
@@ -69,8 +69,8 @@ public enum CompressType {
 	 * @return 压缩操作对象
 	 * @throws Exception 实例化失败
 	 */
-	public Compressor<?> ofCompress(File fromFile) throws Exception {
+	public Compressor<?> compressFrom(File fromFile) throws Exception {
-		return getCompressor().from(fromFile);
+		return getCompressor().of(fromFile);
 	}
 
 	/**
@@ -90,8 +90,8 @@ public enum CompressType {
 	 * @return 解压操作对象
 	 * @throws Exception 实例化失败
 	 */
-	public Decompressor<?> ofCompressed(File fromFile) throws Exception {
+	public Decompressor<?> decompressedFrom(File fromFile) throws Exception {
-		return getDecompressor().from(fromFile);
+		return getDecompressor().of(fromFile);
 	}
 
 	/**
@@ -101,8 +101,8 @@ public enum CompressType {
 	 * @return 解压操作对象
 	 * @throws Exception 实例化失败
 	 */
-	public Decompressor<?> ofCompressed(InputStream fromStream) throws Exception {
+	public Decompressor<?> decompressedFrom(InputStream fromStream) throws Exception {
-		return getDecompressor().from(fromStream);
+		return getDecompressor().of(fromStream);
 	}
 
 	/**
@@ -114,7 +114,7 @@ public enum CompressType {
 	 * @throws UnsupportedOperationException 不支持的文件
 	 * @throws Exception 实例化失败
 	 */
-	public static Decompressor<?> fromFile(File file) throws Exception {
+	public static Decompressor<?> from(File file) throws Exception {
 		try (InputStream inputStream = IO.getInputStream(file)) {
 			byte[] head = new byte[512];
 			int length = inputStream.read(head);
@@ -122,16 +122,16 @@ public enum CompressType {
 				throw new UnsupportedOperationException("empty file");
 			}
 			if (SevenZFile.matches(head, length)) {
-				return Z7.ofCompressed(file);
+				return Z7.decompressedFrom(file);
 			}
 			if (ZipArchiveInputStream.matches(head, length)) {
-				return ZIP.ofCompressed(file);
+				return ZIP.decompressedFrom(file);
 			}
 			if (GzipCompressorInputStream.matches(head, length)) {
-				return GZIP.ofCompressed(file);
+				return GZIP.decompressedFrom(file);
 			}
 			if (TarArchiveInputStream.matches(head, length)) {
-				return TAR.ofCompressed(file);
+				return TAR.decompressedFrom(file);
 			}
 		}
 		throw new UnsupportedOperationException("not support file");

src/main/java/com/imyeyu/compress/Compressor.java

@@ -24,7 +24,7 @@ public abstract class Compressor<T extends Compressor<T>> extends AbstractRunner
 	 * @param fromPath 源路径
 	 * @return 当前压缩器
 	 */
-	public T from(String fromPath) {
+	protected T of(String fromPath) {
 		TimiException.required(fromPath, "not found fromPath");
 		this.fromPath = fromPath;
 		return self();
@@ -36,9 +36,9 @@ public abstract class Compressor<T extends Compressor<T>> extends AbstractRunner
 	 * @param fromFile 源文件
 	 * @return 当前压缩器
 	 */
-	public T from(File fromFile) {
+	protected T of(File fromFile) {
 		TimiException.required(fromFile, "not found fromFile");
-		return from(fromFile.getAbsolutePath());
+		return of(fromFile.getAbsolutePath());
 	}
 
 	/**

src/main/java/com/imyeyu/compress/Decompressor.java

@@ -27,7 +27,7 @@ public abstract class Decompressor<T extends Decompressor<T>> extends AbstractRu
 	 * @param fromFile 源压缩文件
 	 * @return 当前解压器
 	 */
-	public T from(File fromFile) {
+	protected T of(File fromFile) {
 		TimiException.required(fromFile, "not found fromFile");
 		this.fromFile = fromFile;
 		this.fromStream = null;
@@ -40,9 +40,9 @@ public abstract class Decompressor<T extends Decompressor<T>> extends AbstractRu
 	 * @param fromPath 源压缩文件路径
 	 * @return 当前解压器
 	 */
-	public T from(String fromPath) {
+	protected T of(String fromPath) {
 		TimiException.required(fromPath, "not found fromPath");
-		return from(new File(fromPath));
+		return of(new File(fromPath));
 	}
 
 	/**
@@ -51,7 +51,7 @@ public abstract class Decompressor<T extends Decompressor<T>> extends AbstractRu
 	 * @param fromStream 源压缩输入流
 	 * @return 当前解压器
 	 */
-	public T from(InputStream fromStream) {
+	public T of(InputStream fromStream) {
 		TimiException.required(fromStream, "not found fromStream");
 		this.fromStream = fromStream;
 		this.fromFile = null;

src/main/java/com/imyeyu/compress/GZipCompressor.java

@@ -26,8 +26,8 @@ public class GZipCompressor extends Compressor<GZipCompressor> {
 	 * @param fromPath 源路径
 	 * @return 压缩器
 	 */
-	public static GZipCompressor of(String fromPath) {
+	public static GZipCompressor from(String fromPath) {
-		return new GZipCompressor().from(fromPath);
+		return new GZipCompressor().of(fromPath);
 	}
 
 	/**
@@ -36,8 +36,8 @@ public class GZipCompressor extends Compressor<GZipCompressor> {
 	 * @param fromFile 源文件
 	 * @return 压缩器
 	 */
-	public static GZipCompressor of(File fromFile) {
+	public static GZipCompressor from(File fromFile) {
-		return new GZipCompressor().from(fromFile);
+		return new GZipCompressor().of(fromFile);
 	}
 
 	@Override

src/main/java/com/imyeyu/compress/GZipDecompressor.java

@@ -23,8 +23,8 @@ public class GZipDecompressor extends Decompressor<GZipDecompressor> {
 	 * @param fromFile 源压缩文件
 	 * @return 解压器
 	 */
-	public static GZipDecompressor of(File fromFile) {
+	public static GZipDecompressor from(File fromFile) {
-		return new GZipDecompressor().from(fromFile);
+		return new GZipDecompressor().of(fromFile);
 	}
 
 	/**
@@ -33,8 +33,8 @@ public class GZipDecompressor extends Decompressor<GZipDecompressor> {
 	 * @param fromPath 源压缩文件路径
 	 * @return 解压器
 	 */
-	public static GZipDecompressor of(String fromPath) {
+	public static GZipDecompressor from(String fromPath) {
-		return new GZipDecompressor().from(fromPath);
+		return new GZipDecompressor().of(fromPath);
 	}
 
 	/**
@@ -43,8 +43,8 @@ public class GZipDecompressor extends Decompressor<GZipDecompressor> {
 	 * @param fromStream 源压缩输入流
 	 * @return 解压器
 	 */
-	public static GZipDecompressor of(InputStream fromStream) {
+	public static GZipDecompressor from(InputStream fromStream) {
-		return new GZipDecompressor().from(fromStream);
+		return new GZipDecompressor().of(fromStream);
 	}
 
 	@Override

src/main/java/com/imyeyu/compress/TarCompressor.java

@@ -24,8 +24,8 @@ public class TarCompressor extends Compressor<TarCompressor> {
 	 * @param fromPath 源路径
 	 * @return 压缩器
 	 */
-	public static TarCompressor of(String fromPath) {
+	public static TarCompressor from(String fromPath) {
-		return new TarCompressor().from(fromPath);
+		return new TarCompressor().of(fromPath);
 	}
 
 	/**
@@ -34,8 +34,8 @@ public class TarCompressor extends Compressor<TarCompressor> {
 	 * @param fromFile 源文件
 	 * @return 压缩器
 	 */
-	public static TarCompressor of(File fromFile) {
+	public static TarCompressor from(File fromFile) {
-		return new TarCompressor().from(fromFile);
+		return new TarCompressor().of(fromFile);
 	}
 
 	@Override

src/main/java/com/imyeyu/compress/TarDecompressor.java

@@ -22,8 +22,8 @@ public class TarDecompressor extends Decompressor<TarDecompressor> {
 	 * @param fromFile 源压缩文件
 	 * @return 解压器
 	 */
-	public static TarDecompressor of(File fromFile) {
+	public static TarDecompressor from(File fromFile) {
-		return new TarDecompressor().from(fromFile);
+		return new TarDecompressor().of(fromFile);
 	}
 
 	/**
@@ -32,8 +32,8 @@ public class TarDecompressor extends Decompressor<TarDecompressor> {
 	 * @param fromPath 源压缩文件路径
 	 * @return 解压器
 	 */
-	public static TarDecompressor of(String fromPath) {
+	public static TarDecompressor from(String fromPath) {
-		return new TarDecompressor().from(fromPath);
+		return new TarDecompressor().of(fromPath);
 	}
 
 	/**
@@ -42,8 +42,8 @@ public class TarDecompressor extends Decompressor<TarDecompressor> {
 	 * @param fromStream 源压缩输入流
 	 * @return 解压器
 	 */
-	public static TarDecompressor of(InputStream fromStream) {
+	public static TarDecompressor from(InputStream fromStream) {
-		return new TarDecompressor().from(fromStream);
+		return new TarDecompressor().of(fromStream);
 	}
 
 	@Override

src/main/java/com/imyeyu/compress/Z7Compressor.java

@@ -25,8 +25,8 @@ public class Z7Compressor extends Compressor<Z7Compressor> {
 	 * @param fromPath 源路径
 	 * @return 压缩器
 	 */
-	public static Z7Compressor of(String fromPath) {
+	public static Z7Compressor from(String fromPath) {
-		return new Z7Compressor().from(fromPath);
+		return new Z7Compressor().of(fromPath);
 	}
 
 	/**
@@ -35,15 +35,15 @@ public class Z7Compressor extends Compressor<Z7Compressor> {
 	 * @param fromFile 源文件
 	 * @return 压缩器
 	 */
-	public static Z7Compressor of(File fromFile) {
+	public static Z7Compressor from(File fromFile) {
-		return new Z7Compressor().from(fromFile);
+		return new Z7Compressor().of(fromFile);
 	}
 
 	@Override
 	protected void toStream(String fromPath, OutputStream toStream) throws Exception {
 		Path tempFile = Files.createTempFile("timi-compress-", ".7z");
 		try {
-			from(fromPath).toFile(tempFile.toFile());
+			of(fromPath).toFile(tempFile.toFile());
 			try (InputStream inputStream = Files.newInputStream(tempFile)) {
 				transfer(inputStream, toStream, false);
 				toStream.flush();

src/main/java/com/imyeyu/compress/Z7Decompressor.java

@@ -24,8 +24,8 @@ public class Z7Decompressor extends Decompressor<Z7Decompressor> {
 	 * @param fromFile 源压缩文件
 	 * @return 解压器
 	 */
-	public static Z7Decompressor of(File fromFile) {
+	public static Z7Decompressor from(File fromFile) {
-		return new Z7Decompressor().from(fromFile);
+		return new Z7Decompressor().of(fromFile);
 	}
 
 	/**
@@ -34,8 +34,8 @@ public class Z7Decompressor extends Decompressor<Z7Decompressor> {
 	 * @param fromPath 源压缩文件路径
 	 * @return 解压器
 	 */
-	public static Z7Decompressor of(String fromPath) {
+	public static Z7Decompressor from(String fromPath) {
-		return new Z7Decompressor().from(fromPath);
+		return new Z7Decompressor().of(fromPath);
 	}
 
 	/**
@@ -44,8 +44,8 @@ public class Z7Decompressor extends Decompressor<Z7Decompressor> {
 	 * @param fromStream 源压缩输入流
 	 * @return 解压器
 	 */
-	public static Z7Decompressor of(InputStream fromStream) {
+	public static Z7Decompressor from(InputStream fromStream) {
-		return new Z7Decompressor().from(fromStream);
+		return new Z7Decompressor().of(fromStream);
 	}
 
 	@Override

src/main/java/com/imyeyu/compress/ZipCompressor.java

@@ -24,8 +24,8 @@ public class ZipCompressor extends Compressor<ZipCompressor> {
 	 * @param fromPath 源路径
 	 * @return 压缩器
 	 */
-	public static ZipCompressor of(String fromPath) {
+	public static ZipCompressor from(String fromPath) {
-		return new ZipCompressor().from(fromPath);
+		return new ZipCompressor().of(fromPath);
 	}
 
 	/**
@@ -34,8 +34,8 @@ public class ZipCompressor extends Compressor<ZipCompressor> {
 	 * @param fromFile 源文件
 	 * @return 压缩器
 	 */
-	public static ZipCompressor of(File fromFile) {
+	public static ZipCompressor from(File fromFile) {
-		return new ZipCompressor().from(fromFile);
+		return new ZipCompressor().of(fromFile);
 	}
 
 	@Override

src/main/java/com/imyeyu/compress/ZipDecompressor.java

@@ -24,8 +24,8 @@ public class ZipDecompressor extends Decompressor<ZipDecompressor> {
 	 * @param fromFile 源压缩文件
 	 * @return 解压器
 	 */
-	public static ZipDecompressor of(File fromFile) {
+	public static ZipDecompressor from(File fromFile) {
-		return new ZipDecompressor().from(fromFile);
+		return new ZipDecompressor().of(fromFile);
 	}
 
 	/**
@@ -34,8 +34,8 @@ public class ZipDecompressor extends Decompressor<ZipDecompressor> {
 	 * @param fromPath 源压缩文件路径
 	 * @return 解压器
 	 */
-	public static ZipDecompressor of(String fromPath) {
+	public static ZipDecompressor from(String fromPath) {
-		return new ZipDecompressor().from(fromPath);
+		return new ZipDecompressor().of(fromPath);
 	}
 
 	/**
@@ -44,8 +44,8 @@ public class ZipDecompressor extends Decompressor<ZipDecompressor> {
 	 * @param fromStream 源压缩输入流
 	 * @return 解压器
 	 */
-	public static ZipDecompressor of(InputStream fromStream) {
+	public static ZipDecompressor from(InputStream fromStream) {
-		return new ZipDecompressor().from(fromStream);
+		return new ZipDecompressor().of(fromStream);
 	}
 
 	@Override

src/test/java/test/GzipTest.java

@@ -22,7 +22,7 @@ public class GzipTest {
 
 	@Test
 	public void testStaticCompress() throws Exception {
-		GZipCompressor compressor = GZipCompressor.of("testSrc").toFile("testOut/test.gz");
+		GZipCompressor compressor = GZipCompressor.from("testSrc").toFile("testOut/test.gz");
 		Assertions.assertNotNull(compressor);
 	}
 
@@ -31,7 +31,7 @@ public class GzipTest {
 		File out = IO.file("testOut/test-chain.gz");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		GZipCompressor compressor = GZipCompressor.of("testSrc");
+		GZipCompressor compressor = GZipCompressor.from("testSrc");
 		Assertions.assertSame(
 			compressor,
 			compressor
@@ -46,15 +46,15 @@ public class GzipTest {
 	@Test
 	public void testDecompress() throws Exception {
 		File in = IO.file("testOut/test.gz");
-		GZipCompressor.of("testSrc").toFile(in);
+		GZipCompressor.from("testSrc").toFile(in);
 		File out = IO.dir("testOutDe");
-		CompressType.fromFile(in).toPath(out.getAbsolutePath());
+		CompressType.from(in).toPath(out.getAbsolutePath());
 	}
 
 	@Test
 	public void testCompressToStream() throws Exception {
 		try (OutputStream os = IO.getOutputStream(IO.file("testOut/test.tar.gz"))) {
-			CompressType.GZIP.ofCompress("testSrc").toStream(os);
+			CompressType.GZIP.compressFrom("testSrc").toStream(os);
 		}
 	}
 
@@ -62,13 +62,13 @@ public class GzipTest {
 	public void testChainDecompressFromStream() throws Exception {
 		byte[] bytes;
 		try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-			CompressType.GZIP.ofCompress("testSrc").toStream(outputStream);
+			CompressType.GZIP.compressFrom("testSrc").toStream(outputStream);
 			bytes = outputStream.toByteArray();
 		}
 		File out = IO.dir("testOutDeStream/gzip");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		GZipDecompressor decompressor = GZipDecompressor.of(new ByteArrayInputStream(bytes));
+		GZipDecompressor decompressor = GZipDecompressor.from(new ByteArrayInputStream(bytes));
 		Assertions.assertSame(
 			decompressor,
 			decompressor

src/test/java/test/TarTest.java

@@ -22,7 +22,7 @@ public class TarTest {
 
 	@Test
 	public void testStaticCompress() throws Exception {
-		TarCompressor compressor = TarCompressor.of("testSrc").toFile("testOut/test.tar");
+		TarCompressor compressor = TarCompressor.from("testSrc").toFile("testOut/test.tar");
 		Assertions.assertNotNull(compressor);
 	}
 
@@ -31,7 +31,7 @@ public class TarTest {
 		File out = IO.file("testOut/test-chain.tar");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		TarCompressor compressor = TarCompressor.of("testSrc");
+		TarCompressor compressor = TarCompressor.from("testSrc");
 		Assertions.assertSame(
 			compressor,
 			compressor
@@ -46,15 +46,15 @@ public class TarTest {
 	@Test
 	public void testDecompress() throws Exception {
 		File in = IO.file("testOut/test.tar");
-		TarCompressor.of("testSrc").toFile(in);
+		TarCompressor.from("testSrc").toFile(in);
 		File out = IO.dir("testOutDe");
-		CompressType.fromFile(in).toPath(out.getAbsolutePath());
+		CompressType.from(in).toPath(out.getAbsolutePath());
 	}
 
 	@Test
 	public void testCompressToStream() throws Exception {
 		try (OutputStream os = IO.getOutputStream(IO.file("testOut/test.tar"))) {
-			CompressType.TAR.ofCompress("testSrc").toStream(os);
+			CompressType.TAR.compressFrom("testSrc").toStream(os);
 		}
 	}
 
@@ -62,13 +62,13 @@ public class TarTest {
 	public void testChainDecompressFromStream() throws Exception {
 		byte[] bytes;
 		try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-			CompressType.TAR.ofCompress("testSrc").toStream(outputStream);
+			CompressType.TAR.compressFrom("testSrc").toStream(outputStream);
 			bytes = outputStream.toByteArray();
 		}
 		File out = IO.dir("testOutDeStream/tar");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		TarDecompressor decompressor = TarDecompressor.of(new ByteArrayInputStream(bytes));
+		TarDecompressor decompressor = TarDecompressor.from(new ByteArrayInputStream(bytes));
 		Assertions.assertSame(
 			decompressor,
 			decompressor

src/test/java/test/Z7Test.java

@@ -21,7 +21,7 @@ public class Z7Test {
 
 	@Test
 	public void testStaticCompress() throws Exception {
-		Z7Compressor compressor = Z7Compressor.of("testSrc").toFile("testOut/test.7z");
+		Z7Compressor compressor = Z7Compressor.from("testSrc").toFile("testOut/test.7z");
 		Assertions.assertNotNull(compressor);
 	}
 
@@ -30,7 +30,7 @@ public class Z7Test {
 		File out = IO.file("testOut/test-chain.7z");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		Z7Compressor compressor = Z7Compressor.of("testSrc");
+		Z7Compressor compressor = Z7Compressor.from("testSrc");
 		Assertions.assertSame(
 			compressor,
 			compressor
@@ -45,15 +45,15 @@ public class Z7Test {
 	@Test
 	public void testDecompress() throws Exception {
 		File in = IO.file("testOut/test.7z");
-		Z7Compressor.of("testSrc").toFile(in);
+		Z7Compressor.from("testSrc").toFile(in);
 		File out = IO.dir("testOutDe");
-		CompressType.fromFile(in).toPath(out.getAbsolutePath());
+		CompressType.from(in).toPath(out.getAbsolutePath());
 	}
 
 	@Test
 	public void testCompressToStream() throws Exception {
 		try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-			CompressType.Z7.ofCompress("testSrc").toStream(outputStream);
+			CompressType.Z7.compressFrom("testSrc").toStream(outputStream);
 		}
 	}
 
@@ -61,13 +61,13 @@ public class Z7Test {
 	public void testChainDecompressFromStream() throws Exception {
 		byte[] bytes;
 		try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-			CompressType.Z7.ofCompress("testSrc").toStream(outputStream);
+			CompressType.Z7.compressFrom("testSrc").toStream(outputStream);
 			bytes = outputStream.toByteArray();
 		}
 		File out = IO.dir("testOutDeStream/z7");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		Z7Decompressor decompressor = Z7Decompressor.of(new ByteArrayInputStream(bytes));
+		Z7Decompressor decompressor = Z7Decompressor.from(new ByteArrayInputStream(bytes));
 		Assertions.assertSame(
 			decompressor,
 			decompressor

src/test/java/test/ZipTest.java

@@ -21,7 +21,7 @@ public class ZipTest {
 
 	@Test
 	public void testStaticCompress() throws Exception {
-		ZipCompressor compressor = ZipCompressor.of("testSrc").toFile("testOut/test.zip");
+		ZipCompressor compressor = ZipCompressor.from("testSrc").toFile("testOut/test.zip");
 		Assertions.assertNotNull(compressor);
 	}
 
@@ -30,7 +30,7 @@ public class ZipTest {
 		File out = IO.file("testOut/test-chain.zip");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		ZipCompressor compressor = ZipCompressor.of("testSrc");
+		ZipCompressor compressor = ZipCompressor.from("testSrc");
 		Assertions.assertSame(
 			compressor,
 			compressor
@@ -45,15 +45,15 @@ public class ZipTest {
 	@Test
 	public void testDecompress() throws Exception {
 		File in = IO.file("testOut/test.zip");
-		ZipCompressor.of("testSrc").toFile(in);
+		ZipCompressor.from("testSrc").toFile(in);
 		File out = IO.dir("testOutDe");
-		CompressType.fromFile(in).toPath(out.getAbsolutePath());
+		CompressType.from(in).toPath(out.getAbsolutePath());
 	}
 
 	@Test
 	public void testCompressToStream() throws Exception {
 		try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-			CompressType.ZIP.ofCompress("testSrc").toStream(outputStream);
+			CompressType.ZIP.compressFrom("testSrc").toStream(outputStream);
 		}
 	}
 
@@ -61,13 +61,13 @@ public class ZipTest {
 	public void testChainDecompressFromStream() throws Exception {
 		byte[] bytes;
 		try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
-			CompressType.ZIP.ofCompress("testSrc").toStream(outputStream);
+			CompressType.ZIP.compressFrom("testSrc").toStream(outputStream);
 			bytes = outputStream.toByteArray();
 		}
 		File out = IO.dir("testOutDeStream/zip");
 		AtomicInteger fileCount = new AtomicInteger();
 		AtomicReference<Double> progress = new AtomicReference<>(0D);
-		ZipDecompressor decompressor = ZipDecompressor.of(new ByteArrayInputStream(bytes));
+		ZipDecompressor decompressor = ZipDecompressor.from(new ByteArrayInputStream(bytes));
 		Assertions.assertSame(
 			decompressor,
 			decompressor