-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.fastlz;\r
-\r
-import java.io.File;\r
-import java.io.FileNotFoundException;\r
-import java.io.FileOutputStream;\r
-import java.io.IOException;\r
-import java.io.InputStream;\r
-import java.io.OutputStream;\r
-import java.io.UnsupportedEncodingException;\r
-import java.net.URL;\r
-import java.net.URLDecoder;\r
-import java.nio.ByteBuffer;\r
-\r
-import org.simantics.compressions.impl.Buffers;\r
-import org.simantics.fastlz.impl.FastLZConfig;\r
-import org.simantics.fastlz.impl.FastLZInputStream;\r
-import org.simantics.fastlz.impl.FastLZOutputStream;\r
-import org.simantics.fastlz.impl.OS;\r
-import org.simantics.fastlz.java.FastLZJavaInputStream;\r
-import org.simantics.fastlz.java.FastLZJavaOutputStream;\r
-\r
-/**\r
- * @author Tuukka Lehtonen\r
- */\r
-@SuppressWarnings("resource")\r
-public class FastLZ {\r
-\r
- private static boolean nativeInitialized = false;\r
-\r
- public static boolean isNativeInitialized() {\r
- return nativeInitialized;\r
- }\r
-\r
- private static boolean isNativeDisabled() {\r
- return "false".equalsIgnoreCase(System.getProperty("fastlz.native", "true"));\r
- }\r
-\r
- public synchronized static void initialize(File path) {\r
- if (nativeInitialized || isNativeDisabled())\r
- return;\r
-\r
-// System.out.println("INITIALIZE FASTLZ: " + path);\r
-\r
- String osName = System.getProperty("os.name");\r
- String osArch = System.getProperty("os.arch");\r
- String lib = "fastlz";\r
-\r
- try {\r
- if (path == null) {\r
- lib += OS.formOsArchSuffix();\r
- System.loadLibrary(lib);\r
- } else {\r
- if (path.isDirectory()) {\r
- lib = System.mapLibraryName(lib + OS.formOsArchSuffix());\r
- lib = new File(path, lib).toString();\r
- } else if (path.isFile()) {\r
- lib = path.toString();\r
- } else {\r
- throw new IllegalArgumentException("Invalid path for FastLZ library: " + path);\r
- }\r
- try {\r
- System.load(lib);\r
- } catch (UnsatisfiedLinkError e) {\r
- String fallback = "fastlz";\r
- fallback += OS.formOsArchSuffix();\r
- System.loadLibrary(fallback);\r
- }\r
- }\r
- nativeInitialized = true;\r
- } catch (UnsatisfiedLinkError e) {\r
- System.err.println("Couldn't load library '" + lib + "' for os '" + osName + "' and architecture '" + osArch + "'");\r
- e.printStackTrace();\r
- }\r
- }\r
-\r
- static {\r
- if (!isNativeDisabled() && FastLZConfig.attemptStaticInitialization) {\r
- String osName = System.getProperty("os.name");\r
- String osArch = System.getProperty("os.arch");\r
- String libName = OS.resolveLibName();\r
- URL libURL = FastLZ.class.getResource("/" + libName);\r
-// System.out.println("FastLZ libURL: " + libURL);\r
-// System.out.println(".: " + FastLZ.class.getResource("."));\r
-// System.out.println("..: " + FastLZ.class.getResource("../../../" + resolveLibName()));\r
-// System.out.println("libname: " + FastLZ.class.getResource(resolveLibName()));\r
-// System.out.println("/libname: " + FastLZ.class.getResource("/" + resolveLibName()));\r
-// System.out.println("libname stream: " + FastLZ.class.getResourceAsStream(resolveLibName()));\r
-// System.out.println("/libname stream: " + FastLZ.class.getResourceAsStream("/" + resolveLibName()));\r
- if (libURL != null) {\r
- if ("file".equals(libURL.getProtocol())) {\r
- try {\r
- File path = new File(URLDecoder.decode(libURL.getPath(), "UTF-8"));\r
- initialize(path);\r
- } catch (UnsupportedEncodingException e) {\r
- e.printStackTrace();\r
- }\r
- } else if ("jar".equals(libURL.getProtocol())) {\r
- try {\r
- File libFile = OS.extractLib(libURL, libName);\r
- initialize(libFile);\r
- } catch (FileNotFoundException e) {\r
- e.printStackTrace();\r
- } catch (IOException e) {\r
- e.printStackTrace();\r
- }\r
- } else {\r
- System.err.println("Unsupported URL protocol '" + libURL + "' for FastLZ native library file '" + libName + "' for os '" + osName + "' and architecture '" + osArch + "'");\r
- }\r
- } else {\r
- initialize(null); // Final fallback. (Needed when running DB tests by ant script).\r
- }\r
- }\r
- }\r
-\r
- /**\r
- * The output buffer must be at least 5% larger than the input buffer and\r
- * can not be smaller than 66 bytes.\r
- * \r
- * @param inputSize size of uncompressed input data in bytes\r
- * @return maximum amount of bytes needed for the compressed data\r
- */\r
- public static int compressBound(int inputSize) {\r
- return Math.max(66, inputSize + inputSize/20+1);\r
- }\r
-\r
- /**\r
- * Compress a block of data in the input buffer and returns the size of\r
- * compressed block. The size of input buffer is specified by length. The\r
- * minimum input buffer size is 16.\r
- * \r
- * <p>\r
- * The output buffer must be at least 5% larger than the input buffer and\r
- * can not be smaller than 66 bytes.\r
- * \r
- * <p>\r
- * If the input is not compressible, the return value might be larger than\r
- * length (input buffer size).\r
- * \r
- * <p>\r
- * The input buffer and the output buffer can not overlap.\r
- * \r
- * <p>\r
- * The input and output buffers are assumed to be direct byte buffers.\r
- */\r
- static native int compress(ByteBuffer input, int inputOffset, int length,\r
- ByteBuffer output, int outputOffset);\r
-\r
- /**\r
- * Decompress a block of compressed data and returns the size of the\r
- * decompressed block. If error occurs, e.g. the compressed data is\r
- * corrupted or the output buffer is not large enough, then 0 (zero) will be\r
- * returned instead.\r
- * \r
- * <p>\r
- * The input buffer and the output buffer can not overlap.\r
- * \r
- * <p>\r
- * Decompression is memory safe and guaranteed not to write the output\r
- * buffer more than what is specified in maxout.\r
- * \r
- * <p>\r
- * The input and output buffers are assumed to be direct byte buffers.\r
- */\r
- static native int decompress(ByteBuffer input, int inputOffset, int length,\r
- ByteBuffer output, int outputOffset, int maxout);\r
-\r
- /**\r
- * Compress a block of data in the input buffer and returns the size of\r
- * compressed block. The size of input buffer is specified by length. The\r
- * minimum input buffer size is 16.\r
- * \r
- * <p>\r
- * The output buffer must be at least 5% larger than the input buffer and\r
- * can not be smaller than 66 bytes.\r
- * \r
- * <p>\r
- * If the input is not compressible, the return value might be larger than\r
- * length (input buffer size).\r
- * \r
- * <p>\r
- * The input buffer and the output buffer can not overlap.\r
- * \r
- * <p>\r
- * It is recommended to have both input buffers as direct or heap buffers,\r
- * not mixed. Mixing different types of buffers will hurt performance a lot.\r
- * If both buffers are direct byte buffers and native decompression is\r
- * available, it will be employed.\r
- */\r
- public static int compressBuffer(ByteBuffer input, int inputOffset, int length,\r
- ByteBuffer output, int outputOffset) {\r
- if (output.isReadOnly())\r
- throw new IllegalArgumentException("read-only output buffer");\r
-\r
- if (isNativeInitialized()) {\r
- if (input.isDirect() && output.isDirect())\r
- return compress(input, inputOffset, length, output, outputOffset);\r
- }\r
-\r
- byte[] inarr = Buffers.getInputArray(input);\r
- byte[] outarr = Buffers.getOutputArray(output);\r
- int result = FastLZJava.compress(inarr, inputOffset, length, outarr, outputOffset);\r
- Buffers.writeOutput(output, outarr);\r
- return result;\r
- }\r
-\r
- /**\r
- * Decompress a block of compressed data and returns the size of the\r
- * decompressed block. If error occurs, e.g. the compressed data is\r
- * corrupted or the output buffer is not large enough, then 0 (zero) will be\r
- * returned instead.\r
- * \r
- * <p>\r
- * The input buffer and the output buffer can not overlap.\r
- * \r
- * <p>\r
- * Decompression is memory safe and guaranteed not to write the output\r
- * buffer more than what is specified in maxout.\r
- * \r
- * <p>\r
- * It is recommended to have both input buffers as direct or heap buffers,\r
- * not mixed. Mixing different types of buffers will hurt performance a lot.\r
- * If both buffers are direct byte buffers and native decompression is\r
- * available, it will be employed.\r
- */\r
- public static int decompressBuffer(ByteBuffer input, int inputOffset, int length,\r
- ByteBuffer output, int outputOffset, int maxout) {\r
- if (output.isReadOnly())\r
- throw new IllegalArgumentException("read-only output buffer");\r
-\r
- if (isNativeInitialized()) {\r
- if (input.isDirect() && output.isDirect())\r
- return decompress(input, inputOffset, length, output, outputOffset, maxout);\r
- }\r
-\r
- byte[] inarr = Buffers.getInputArray(input);\r
- byte[] outarr = Buffers.getOutputArray(output);\r
- int result = FastLZJava.decompress(inarr, inputOffset, length, outarr, outputOffset, maxout);\r
- Buffers.writeOutput(output, outarr);\r
- return result;\r
- }\r
-\r
- /**\r
- * @param file the FastLZ-compressed file to read\r
- * @return input stream that decompresses its output using the FastLZ\r
- * algorithm. Caller is responsible of closing the returned stream.\r
- * @throws FileNotFoundException see\r
- * {@link FileOutputStream#FileOutputStream(File)} for when this is\r
- * thrown\r
- */\r
- public static InputStream read(File file) throws FileNotFoundException {\r
- return nativeInitialized ? new FastLZInputStream(file)\r
- : new FastLZJavaInputStream(file);\r
- }\r
-\r
- /**\r
- * @param input\r
- * @return\r
- * @param input\r
- * the input stream to decompress\r
- * @return a stream that decompresses the specified FastLZ compressed input\r
- * stream\r
- */\r
- public static InputStream read(InputStream input) {\r
- return nativeInitialized ? new FastLZInputStream(input)\r
- : new FastLZJavaInputStream(input);\r
- }\r
-\r
- /**\r
- * @param file the FastLZ-compressed file to write\r
- * @return output stream that compresses its input using the FastLZ\r
- * algorithm. Caller is responsible of closing the returned stream.\r
- * @throws FileNotFoundException see\r
- * {@link FileOutputStream#FileOutputStream(File)} for when this is\r
- * thrown\r
- */\r
- public static OutputStream write(File file) throws FileNotFoundException {\r
- return nativeInitialized ? new FastLZOutputStream(file)\r
- : new FastLZJavaOutputStream(file);\r
- }\r
-\r
- /**\r
- * @param output\r
- * the stream to write compressed output into\r
- * @return a stream that compresses into the specified output stream with\r
- * FastLZ\r
- */\r
- public static OutputStream write(OutputStream output) {\r
- return nativeInitialized ? new FastLZOutputStream(output)\r
- : new FastLZJavaOutputStream(output);\r
- }\r
-\r
- /**\r
- * Warning: custom utility for performance reasons. Only used by\r
- * org.simantics.db.procore. Do not use elsewhere.\r
- * \r
- * @param deflated\r
- * @param deflatedSize\r
- * @param inflatedSize\r
- * @param arrays\r
- * @return\r
- */\r
- public static synchronized native int decompressCluster(ByteBuffer deflated, int deflatedSize, int inflatedSize, Object[] arrays);\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.fastlz;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.net.URL;
+import java.net.URLDecoder;
+import java.nio.ByteBuffer;
+
+import org.simantics.compressions.impl.Buffers;
+import org.simantics.fastlz.impl.FastLZConfig;
+import org.simantics.fastlz.impl.FastLZInputStream;
+import org.simantics.fastlz.impl.FastLZOutputStream;
+import org.simantics.fastlz.impl.OS;
+import org.simantics.fastlz.java.FastLZJavaInputStream;
+import org.simantics.fastlz.java.FastLZJavaOutputStream;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+@SuppressWarnings("resource")
+public class FastLZ {
+
+ private static boolean nativeInitialized = false;
+
+ public static boolean isNativeInitialized() {
+ return nativeInitialized;
+ }
+
+ private static boolean isNativeDisabled() {
+ return "false".equalsIgnoreCase(System.getProperty("fastlz.native", "true"));
+ }
+
+ public synchronized static void initialize(File path) {
+ if (nativeInitialized || isNativeDisabled())
+ return;
+
+// System.out.println("INITIALIZE FASTLZ: " + path);
+
+ String osName = System.getProperty("os.name");
+ String osArch = System.getProperty("os.arch");
+ String lib = "fastlz";
+
+ try {
+ if (path == null) {
+ lib += OS.formOsArchSuffix();
+ System.loadLibrary(lib);
+ } else {
+ if (path.isDirectory()) {
+ lib = System.mapLibraryName(lib + OS.formOsArchSuffix());
+ lib = new File(path, lib).toString();
+ } else if (path.isFile()) {
+ lib = path.toString();
+ } else {
+ throw new IllegalArgumentException("Invalid path for FastLZ library: " + path);
+ }
+ try {
+ System.load(lib);
+ } catch (UnsatisfiedLinkError e) {
+ String fallback = "fastlz";
+ fallback += OS.formOsArchSuffix();
+ System.loadLibrary(fallback);
+ }
+ }
+ nativeInitialized = true;
+ } catch (UnsatisfiedLinkError e) {
+ System.err.println("Couldn't load library '" + lib + "' for os '" + osName + "' and architecture '" + osArch + "'");
+ e.printStackTrace();
+ }
+ }
+
+ static {
+ if (!isNativeDisabled() && FastLZConfig.attemptStaticInitialization) {
+ String osName = System.getProperty("os.name");
+ String osArch = System.getProperty("os.arch");
+ String libName = OS.resolveLibName();
+ URL libURL = FastLZ.class.getResource("/" + libName);
+// System.out.println("FastLZ libURL: " + libURL);
+// System.out.println(".: " + FastLZ.class.getResource("."));
+// System.out.println("..: " + FastLZ.class.getResource("../../../" + resolveLibName()));
+// System.out.println("libname: " + FastLZ.class.getResource(resolveLibName()));
+// System.out.println("/libname: " + FastLZ.class.getResource("/" + resolveLibName()));
+// System.out.println("libname stream: " + FastLZ.class.getResourceAsStream(resolveLibName()));
+// System.out.println("/libname stream: " + FastLZ.class.getResourceAsStream("/" + resolveLibName()));
+ if (libURL != null) {
+ if ("file".equals(libURL.getProtocol())) {
+ try {
+ File path = new File(URLDecoder.decode(libURL.getPath(), "UTF-8"));
+ initialize(path);
+ } catch (UnsupportedEncodingException e) {
+ e.printStackTrace();
+ }
+ } else if ("jar".equals(libURL.getProtocol())) {
+ try {
+ File libFile = OS.extractLib(libURL, libName);
+ initialize(libFile);
+ } catch (FileNotFoundException e) {
+ e.printStackTrace();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ } else {
+ System.err.println("Unsupported URL protocol '" + libURL + "' for FastLZ native library file '" + libName + "' for os '" + osName + "' and architecture '" + osArch + "'");
+ }
+ } else {
+ initialize(null); // Final fallback. (Needed when running DB tests by ant script).
+ }
+ }
+ }
+
+ /**
+ * The output buffer must be at least 5% larger than the input buffer and
+ * can not be smaller than 66 bytes.
+ *
+ * @param inputSize size of uncompressed input data in bytes
+ * @return maximum amount of bytes needed for the compressed data
+ */
+ public static int compressBound(int inputSize) {
+ return Math.max(66, inputSize + inputSize/20+1);
+ }
+
+ /**
+ * Compress a block of data in the input buffer and returns the size of
+ * compressed block. The size of input buffer is specified by length. The
+ * minimum input buffer size is 16.
+ *
+ * <p>
+ * The output buffer must be at least 5% larger than the input buffer and
+ * can not be smaller than 66 bytes.
+ *
+ * <p>
+ * If the input is not compressible, the return value might be larger than
+ * length (input buffer size).
+ *
+ * <p>
+ * The input buffer and the output buffer can not overlap.
+ *
+ * <p>
+ * The input and output buffers are assumed to be direct byte buffers.
+ */
+ static native int compress(ByteBuffer input, int inputOffset, int length,
+ ByteBuffer output, int outputOffset);
+
+ /**
+ * Decompress a block of compressed data and returns the size of the
+ * decompressed block. If error occurs, e.g. the compressed data is
+ * corrupted or the output buffer is not large enough, then 0 (zero) will be
+ * returned instead.
+ *
+ * <p>
+ * The input buffer and the output buffer can not overlap.
+ *
+ * <p>
+ * Decompression is memory safe and guaranteed not to write the output
+ * buffer more than what is specified in maxout.
+ *
+ * <p>
+ * The input and output buffers are assumed to be direct byte buffers.
+ */
+ static native int decompress(ByteBuffer input, int inputOffset, int length,
+ ByteBuffer output, int outputOffset, int maxout);
+
+ /**
+ * Compress a block of data in the input buffer and returns the size of
+ * compressed block. The size of input buffer is specified by length. The
+ * minimum input buffer size is 16.
+ *
+ * <p>
+ * The output buffer must be at least 5% larger than the input buffer and
+ * can not be smaller than 66 bytes.
+ *
+ * <p>
+ * If the input is not compressible, the return value might be larger than
+ * length (input buffer size).
+ *
+ * <p>
+ * The input buffer and the output buffer can not overlap.
+ *
+ * <p>
+ * It is recommended to have both input buffers as direct or heap buffers,
+ * not mixed. Mixing different types of buffers will hurt performance a lot.
+ * If both buffers are direct byte buffers and native decompression is
+ * available, it will be employed.
+ */
+ public static int compressBuffer(ByteBuffer input, int inputOffset, int length,
+ ByteBuffer output, int outputOffset) {
+ if (output.isReadOnly())
+ throw new IllegalArgumentException("read-only output buffer");
+
+ if (isNativeInitialized()) {
+ if (input.isDirect() && output.isDirect())
+ return compress(input, inputOffset, length, output, outputOffset);
+ }
+
+ byte[] inarr = Buffers.getInputArray(input);
+ byte[] outarr = Buffers.getOutputArray(output);
+ int result = FastLZJava.compress(inarr, inputOffset, length, outarr, outputOffset);
+ Buffers.writeOutput(output, outarr);
+ return result;
+ }
+
+ /**
+ * Decompress a block of compressed data and returns the size of the
+ * decompressed block. If error occurs, e.g. the compressed data is
+ * corrupted or the output buffer is not large enough, then 0 (zero) will be
+ * returned instead.
+ *
+ * <p>
+ * The input buffer and the output buffer can not overlap.
+ *
+ * <p>
+ * Decompression is memory safe and guaranteed not to write the output
+ * buffer more than what is specified in maxout.
+ *
+ * <p>
+ * It is recommended to have both input buffers as direct or heap buffers,
+ * not mixed. Mixing different types of buffers will hurt performance a lot.
+ * If both buffers are direct byte buffers and native decompression is
+ * available, it will be employed.
+ */
+ public static int decompressBuffer(ByteBuffer input, int inputOffset, int length,
+ ByteBuffer output, int outputOffset, int maxout) {
+ if (output.isReadOnly())
+ throw new IllegalArgumentException("read-only output buffer");
+
+ if (isNativeInitialized()) {
+ if (input.isDirect() && output.isDirect())
+ return decompress(input, inputOffset, length, output, outputOffset, maxout);
+ }
+
+ byte[] inarr = Buffers.getInputArray(input);
+ byte[] outarr = Buffers.getOutputArray(output);
+ int result = FastLZJava.decompress(inarr, inputOffset, length, outarr, outputOffset, maxout);
+ Buffers.writeOutput(output, outarr);
+ return result;
+ }
+
+ /**
+ * @param file the FastLZ-compressed file to read
+ * @return input stream that decompresses its output using the FastLZ
+ * algorithm. Caller is responsible of closing the returned stream.
+ * @throws FileNotFoundException see
+ * {@link FileOutputStream#FileOutputStream(File)} for when this is
+ * thrown
+ */
+ public static InputStream read(File file) throws FileNotFoundException {
+ return nativeInitialized ? new FastLZInputStream(file)
+ : new FastLZJavaInputStream(file);
+ }
+
+ /**
+ * @param input
+ * @return
+ * @param input
+ * the input stream to decompress
+ * @return a stream that decompresses the specified FastLZ compressed input
+ * stream
+ */
+ public static InputStream read(InputStream input) {
+ return nativeInitialized ? new FastLZInputStream(input)
+ : new FastLZJavaInputStream(input);
+ }
+
+ /**
+ * @param file the FastLZ-compressed file to write
+ * @return output stream that compresses its input using the FastLZ
+ * algorithm. Caller is responsible of closing the returned stream.
+ * @throws FileNotFoundException see
+ * {@link FileOutputStream#FileOutputStream(File)} for when this is
+ * thrown
+ */
+ public static OutputStream write(File file) throws FileNotFoundException {
+ return nativeInitialized ? new FastLZOutputStream(file)
+ : new FastLZJavaOutputStream(file);
+ }
+
+ /**
+ * @param output
+ * the stream to write compressed output into
+ * @return a stream that compresses into the specified output stream with
+ * FastLZ
+ */
+ public static OutputStream write(OutputStream output) {
+ return nativeInitialized ? new FastLZOutputStream(output)
+ : new FastLZJavaOutputStream(output);
+ }
+
+ /**
+ * Warning: custom utility for performance reasons. Only used by
+ * org.simantics.db.procore. Do not use elsewhere.
+ *
+ * @param deflated
+ * @param deflatedSize
+ * @param inflatedSize
+ * @param arrays
+ * @return
+ */
+ public static synchronized native int decompressCluster(ByteBuffer deflated, int deflatedSize, int inflatedSize, Object[] arrays);
+
+}
Code Review / simantics / platform.git / blobdiff