bundles/org.eclipse.swt/Eclipse SWT PI/common_j2se/org/eclipse/swt/internal/Library.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2009 IBM Corporation and others.
  * 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:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.swt.internal;

 import java.io.*;

 public class Library {

 	/* SWT Version - Mmmm (M=major, mmm=minor) */

 	/**
 	 * SWT Major version number (must be >= 0)
 	 */
     static int MAJOR_VERSION = 3;

 	/**
 	 * SWT Minor version number (must be in the range 0..999)
 	 */
     static int MINOR_VERSION = 549;

 	/**
 	 * SWT revision number (must be >= 0)
 	 */
 	static int REVISION = 0;

 	/**
 	 * The JAVA and SWT versions
 	 */
 	public static final int JAVA_VERSION, SWT_VERSION;

 	static final String SEPARATOR;

 	/* 64-bit support */
 	static /*final*/ boolean IS_64 = 0x1FFFFFFFFL == (int /*long*/)0x1FFFFFFFFL;
 	static final String SUFFIX_64 = "-64";	//$NON-NLS-1$
 	static final String SWTDIR_32 = "swt-32";	//$NON-NLS-1$
 	static final String SWTDIR_64 = "swt-64";	//$NON-NLS-1$

 static {
 	SEPARATOR = System.getProperty("file.separator");
 	JAVA_VERSION = parseVersion(System.getProperty("java.version"));
 	SWT_VERSION = SWT_VERSION(MAJOR_VERSION, MINOR_VERSION);
 }

 static int parseVersion(String version) {
 	if (version == null) return 0;
 	int major = 0, minor = 0, micro = 0;
 	int length = version.length(), index = 0, start = 0;
 	while (index < length && Character.isDigit(version.charAt(index))) index++;
 	try {
 		if (start < length) major = Integer.parseInt(version.substring(start, index));
 	} catch (NumberFormatException e) {}
 	start = ++index;
 	while (index < length && Character.isDigit(version.charAt(index))) index++;
 	try {
 		if (start < length) minor = Integer.parseInt(version.substring(start, index));
 	} catch (NumberFormatException e) {}
 	start = ++index;
 	while (index < length && Character.isDigit(version.charAt(index))) index++;
 	try {
 		if (start < length) micro = Integer.parseInt(version.substring(start, index));
 	} catch (NumberFormatException e) {}
 	return JAVA_VERSION(major, minor, micro);
 }

 /**
  * Returns the Java version number as an integer.
  *
  * @param major
  * @param minor
  * @param micro
  * @return the version
  */
 public static int JAVA_VERSION (int major, int minor, int micro) {
 	return (major << 16) + (minor << 8) + micro;
 }

 /**
  * Returns the SWT version number as an integer.
  *
  * @param major
  * @param minor
  * @return the version
  */
 public static int SWT_VERSION (int major, int minor) {
 	return major * 1000 + minor;
 }

 static boolean extract (String fileName, String mappedName) {
 	FileOutputStream os = null;
 	InputStream is = null;
 	File file = new File(fileName);
 	boolean extracted = false;
 	try {
 		if (!file.exists ()) {
 			is = Library.class.getResourceAsStream ("/" + mappedName); //$NON-NLS-1$
 			if (is != null) {
 				extracted = true;
 				int read;
 				byte [] buffer = new byte [4096];
 				os = new FileOutputStream (fileName);
 				while ((read = is.read (buffer)) != -1) {
 					os.write(buffer, 0, read);
 				}
 				os.close ();
 				is.close ();
 				if (!Platform.PLATFORM.equals ("win32")) { //$NON-NLS-1$
 					try {
 						Runtime.getRuntime ().exec (new String []{"chmod", "755", fileName}).waitFor(); //$NON-NLS-1$ //$NON-NLS-2$
 					} catch (Throwable e) {}
 				}
 			}
 		}
 		if (load (fileName)) return true;
 	} catch (Throwable e) {
 		try {
 			if (os != null) os.close ();
 		} catch (IOException e1) {}
 		try {
 			if (is != null) is.close ();
 		} catch (IOException e1) {}
 		if (extracted && file.exists ()) file.delete ();
 	}
 	return false;
 }

 static boolean load (String libName) {
 	try {
 		if (libName.indexOf (SEPARATOR) != -1) {
 			System.load (libName);
 		} else {
 			System.loadLibrary (libName);
 		}
 		return true;
 	} catch (UnsatisfiedLinkError e) {}
 	return false;
 }

 /**
  * Loads the shared library that matches the version of the
  * Java code which is currently running.  SWT shared libraries
  * follow an encoding scheme where the major, minor and revision
  * numbers are embedded in the library name and this along with
  * <code>name</code> is used to load the library.  If this fails,
  * <code>name</code> is used in another attempt to load the library,
  * this time ignoring the SWT version encoding scheme.
  *
  * @param name the name of the library to load
  */
 public static void loadLibrary (String name) {
 	loadLibrary (name, true);
 }

 /**
  * Loads the shared library that matches the version of the
  * Java code which is currently running.  SWT shared libraries
  * follow an encoding scheme where the major, minor and revision
  * numbers are embedded in the library name and this along with
  * <code>name</code> is used to load the library.  If this fails,
  * <code>name</code> is used in another attempt to load the library,
  * this time ignoring the SWT version encoding scheme.
  *
  * @param name the name of the library to load
  * @param mapName true if the name should be mapped, false otherwise
  */
 public static void loadLibrary (String name, boolean mapName) {
 	String prop = System.getProperty ("sun.arch.data.model"); //$NON-NLS-1$
 	if (prop == null) prop = System.getProperty ("com.ibm.vm.bitmode"); //$NON-NLS-1$
 	if (prop != null) {
 		if ("32".equals (prop) && IS_64) { //$NON-NLS-1$
 			throw new UnsatisfiedLinkError ("Cannot load 64-bit SWT libraries on 32-bit JVM"); //$NON-NLS-1$
 		}
 		if ("64".equals (prop) && !IS_64) { //$NON-NLS-1$
 			throw new UnsatisfiedLinkError ("Cannot load 32-bit SWT libraries on 64-bit JVM"); //$NON-NLS-1$
 		}
 	}

 	/* Compute the library name and mapped name */
 	String libName1, libName2, mappedName1, mappedName2;
 	if (mapName) {
 		String version = System.getProperty ("swt.version"); //$NON-NLS-1$
 		if (version == null) {
 			version = "" + MAJOR_VERSION; //$NON-NLS-1$
 			/* Force 3 digits in minor version number */
 			if (MINOR_VERSION < 10) {
 				version += "00"; //$NON-NLS-1$
 			} else {
 				if (MINOR_VERSION < 100) version += "0"; //$NON-NLS-1$
 			}
 			version += MINOR_VERSION;
 			/* No "r" until first revision */
 			if (REVISION > 0) version += "r" + REVISION; //$NON-NLS-1$
 		}
 		libName1 = name + "-" + Platform.PLATFORM + "-" + version;  //$NON-NLS-1$ //$NON-NLS-2$
 		libName2 = name + "-" + Platform.PLATFORM;  //$NON-NLS-1$
 		mappedName1 = mapLibraryName (libName1);
 		mappedName2 = mapLibraryName (libName2);
 	} else {
 		libName1 = libName2 = mappedName1 = mappedName2 = name;
 	}

 	/* Try loading library from swt library path */
 	String path = System.getProperty ("swt.library.path"); //$NON-NLS-1$
 	if (path != null) {
 		path = new File (path).getAbsolutePath ();
 		if (load (path + SEPARATOR + mappedName1)) return;
 		if (mapName && load (path + SEPARATOR + mappedName2)) return;
 	}

 	/* Try loading library from java library path */
 	if (load (libName1)) return;
 	if (mapName && load (libName2)) return;

 	/* Try loading library from the tmp directory if swt library path is not specified */
 	String fileName1 = mappedName1;
 	String fileName2 = mappedName2;
 	if (path == null) {
 		path = System.getProperty ("java.io.tmpdir"); //$NON-NLS-1$
 		File dir = new File (path, IS_64 ? SWTDIR_64 : SWTDIR_32);
 		if ((dir.exists () && dir.isDirectory ()) || dir.mkdir ()) {
 			path = dir.getAbsolutePath ();
 		} else {
 			/* fall back to using the tmp directory */
 			if (IS_64) {
 				fileName1 = mapLibraryName (libName1 + SUFFIX_64);
 				fileName2 = mapLibraryName (libName2 + SUFFIX_64);
 			}
 		}
 		if (load (path + SEPARATOR + fileName1)) return;
 		if (mapName && load (path + SEPARATOR + fileName2)) return;
 	}

 	/* Try extracting and loading library from jar */
 	if (path != null) {
 		if (extract (path + SEPARATOR + fileName1, mappedName1)) return;
 		if (mapName && extract (path + SEPARATOR + fileName2, mappedName2)) return;
 	}

 	/* Failed to find the library */
 	throw new UnsatisfiedLinkError ("no " + libName1 + " or " + libName2 + " in swt.library.path, java.library.path or the jar file"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 }

 static String mapLibraryName (String libName) {
 	/* SWT libraries in the Macintosh use the extension .jnilib but the some VMs map to .dylib. */
 	libName = System.mapLibraryName (libName);
 	String ext = ".dylib"; //$NON-NLS-1$
 	if (libName.endsWith(ext)) {
 		libName = libName.substring(0, libName.length() - ext.length()) + ".jnilib"; //$NON-NLS-1$
 	}
 	return libName;
 }

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2009 IBM Corporation and others.
	* 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:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.swt.internal;

	import java.io.*;

	public class Library {

	/* SWT Version - Mmmm (M=major, mmm=minor) */

	/**
	* SWT Major version number (must be >= 0)
	*/
	static int MAJOR_VERSION = 3;

	/**
	* SWT Minor version number (must be in the range 0..999)
	*/
	static int MINOR_VERSION = 549;

	/**
	* SWT revision number (must be >= 0)
	*/
	static int REVISION = 0;

	/**
	* The JAVA and SWT versions
	*/
	public static final int JAVA_VERSION, SWT_VERSION;

	static final String SEPARATOR;

	/* 64-bit support */
	static /final/ boolean IS_64 = 0x1FFFFFFFFL == (int /long/)0x1FFFFFFFFL;
	static final String SUFFIX_64 = "-64"; //$NON-NLS-1$
	static final String SWTDIR_32 = "swt-32"; //$NON-NLS-1$
	static final String SWTDIR_64 = "swt-64"; //$NON-NLS-1$

	static {
	SEPARATOR = System.getProperty("file.separator");
	JAVA_VERSION = parseVersion(System.getProperty("java.version"));
	SWT_VERSION = SWT_VERSION(MAJOR_VERSION, MINOR_VERSION);
	}

	static int parseVersion(String version) {
	if (version == null) return 0;
	int major = 0, minor = 0, micro = 0;
	int length = version.length(), index = 0, start = 0;
	while (index < length && Character.isDigit(version.charAt(index))) index++;
	try {
	if (start < length) major = Integer.parseInt(version.substring(start, index));
	} catch (NumberFormatException e) {}
	start = ++index;
	while (index < length && Character.isDigit(version.charAt(index))) index++;
	try {
	if (start < length) minor = Integer.parseInt(version.substring(start, index));
	} catch (NumberFormatException e) {}
	start = ++index;
	while (index < length && Character.isDigit(version.charAt(index))) index++;
	try {
	if (start < length) micro = Integer.parseInt(version.substring(start, index));
	} catch (NumberFormatException e) {}
	return JAVA_VERSION(major, minor, micro);
	}

	/**
	* Returns the Java version number as an integer.
	*
	* @param major
	* @param minor
	* @param micro
	* @return the version
	*/
	public static int JAVA_VERSION (int major, int minor, int micro) {
	return (major << 16) + (minor << 8) + micro;
	}

	/**
	* Returns the SWT version number as an integer.
	*
	* @param major
	* @param minor
	* @return the version
	*/
	public static int SWT_VERSION (int major, int minor) {
	return major * 1000 + minor;
	}

	static boolean extract (String fileName, String mappedName) {
	FileOutputStream os = null;
	InputStream is = null;
	File file = new File(fileName);
	boolean extracted = false;
	try {
	if (!file.exists ()) {
	is = Library.class.getResourceAsStream ("/" + mappedName); //$NON-NLS-1$
	if (is != null) {
	extracted = true;
	int read;
	byte [] buffer = new byte [4096];
	os = new FileOutputStream (fileName);
	while ((read = is.read (buffer)) != -1) {
	os.write(buffer, 0, read);
	}
	os.close ();
	is.close ();
	if (!Platform.PLATFORM.equals ("win32")) { //$NON-NLS-1$
	try {
	Runtime.getRuntime ().exec (new String []{"chmod", "755", fileName}).waitFor(); //$NON-NLS-1$ //$NON-NLS-2$
	} catch (Throwable e) {}
	}
	}
	}
	if (load (fileName)) return true;
	} catch (Throwable e) {
	try {
	if (os != null) os.close ();
	} catch (IOException e1) {}
	try {
	if (is != null) is.close ();
	} catch (IOException e1) {}
	if (extracted && file.exists ()) file.delete ();
	}
	return false;
	}

	static boolean load (String libName) {
	try {
	if (libName.indexOf (SEPARATOR) != -1) {
	System.load (libName);
	} else {
	System.loadLibrary (libName);
	}
	return true;
	} catch (UnsatisfiedLinkError e) {}
	return false;
	}

	/**
	* Loads the shared library that matches the version of the
	* Java code which is currently running. SWT shared libraries
	* follow an encoding scheme where the major, minor and revision
	* numbers are embedded in the library name and this along with
	* <code>name</code> is used to load the library. If this fails,
	* <code>name</code> is used in another attempt to load the library,
	* this time ignoring the SWT version encoding scheme.
	*
	* @param name the name of the library to load
	*/
	public static void loadLibrary (String name) {
	loadLibrary (name, true);
	}

	/**
	* Loads the shared library that matches the version of the
	* Java code which is currently running. SWT shared libraries
	* follow an encoding scheme where the major, minor and revision
	* numbers are embedded in the library name and this along with
	* <code>name</code> is used to load the library. If this fails,
	* <code>name</code> is used in another attempt to load the library,
	* this time ignoring the SWT version encoding scheme.
	*
	* @param name the name of the library to load
	* @param mapName true if the name should be mapped, false otherwise
	*/
	public static void loadLibrary (String name, boolean mapName) {
	String prop = System.getProperty ("sun.arch.data.model"); //$NON-NLS-1$
	if (prop == null) prop = System.getProperty ("com.ibm.vm.bitmode"); //$NON-NLS-1$
	if (prop != null) {
	if ("32".equals (prop) && IS_64) { //$NON-NLS-1$
	throw new UnsatisfiedLinkError ("Cannot load 64-bit SWT libraries on 32-bit JVM"); //$NON-NLS-1$
	}
	if ("64".equals (prop) && !IS_64) { //$NON-NLS-1$
	throw new UnsatisfiedLinkError ("Cannot load 32-bit SWT libraries on 64-bit JVM"); //$NON-NLS-1$
	}
	}

	/* Compute the library name and mapped name */
	String libName1, libName2, mappedName1, mappedName2;
	if (mapName) {
	String version = System.getProperty ("swt.version"); //$NON-NLS-1$
	if (version == null) {
	version = "" + MAJOR_VERSION; //$NON-NLS-1$
	/* Force 3 digits in minor version number */
	if (MINOR_VERSION < 10) {
	version += "00"; //$NON-NLS-1$
	} else {
	if (MINOR_VERSION < 100) version += "0"; //$NON-NLS-1$
	}
	version += MINOR_VERSION;
	/* No "r" until first revision */
	if (REVISION > 0) version += "r" + REVISION; //$NON-NLS-1$
	}
	libName1 = name + "-" + Platform.PLATFORM + "-" + version; //$NON-NLS-1$ //$NON-NLS-2$
	libName2 = name + "-" + Platform.PLATFORM; //$NON-NLS-1$
	mappedName1 = mapLibraryName (libName1);
	mappedName2 = mapLibraryName (libName2);
	} else {
	libName1 = libName2 = mappedName1 = mappedName2 = name;
	}

	/* Try loading library from swt library path */
	String path = System.getProperty ("swt.library.path"); //$NON-NLS-1$
	if (path != null) {
	path = new File (path).getAbsolutePath ();
	if (load (path + SEPARATOR + mappedName1)) return;
	if (mapName && load (path + SEPARATOR + mappedName2)) return;
	}

	/* Try loading library from java library path */
	if (load (libName1)) return;
	if (mapName && load (libName2)) return;

	/* Try loading library from the tmp directory if swt library path is not specified */
	String fileName1 = mappedName1;
	String fileName2 = mappedName2;
	if (path == null) {
	path = System.getProperty ("java.io.tmpdir"); //$NON-NLS-1$
	File dir = new File (path, IS_64 ? SWTDIR_64 : SWTDIR_32);
	if ((dir.exists () && dir.isDirectory ()) \|\| dir.mkdir ()) {
	path = dir.getAbsolutePath ();
	} else {
	/* fall back to using the tmp directory */
	if (IS_64) {
	fileName1 = mapLibraryName (libName1 + SUFFIX_64);
	fileName2 = mapLibraryName (libName2 + SUFFIX_64);
	}
	}
	if (load (path + SEPARATOR + fileName1)) return;
	if (mapName && load (path + SEPARATOR + fileName2)) return;
	}

	/* Try extracting and loading library from jar */
	if (path != null) {
	if (extract (path + SEPARATOR + fileName1, mappedName1)) return;
	if (mapName && extract (path + SEPARATOR + fileName2, mappedName2)) return;
	}

	/* Failed to find the library */
	throw new UnsatisfiedLinkError ("no " + libName1 + " or " + libName2 + " in swt.library.path, java.library.path or the jar file"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	}

	static String mapLibraryName (String libName) {
	/* SWT libraries in the Macintosh use the extension .jnilib but the some VMs map to .dylib. */
	libName = System.mapLibraryName (libName);
	String ext = ".dylib"; //$NON-NLS-1$
	if (libName.endsWith(ext)) {
	libName = libName.substring(0, libName.length() - ext.length()) + ".jnilib"; //$NON-NLS-1$
	}
	return libName;
	}

	}