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/*******************************************************************************
* Copyright (c) 2000, 2013 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.*;
import java.net.*;
import java.util.jar.*;
public class Library {
/* SWT Version - Mmmm (M=major, mmm=minor) */
/**
* SWT Major version number (must be >= 0)
*/
static int MAJOR_VERSION = 4;
/**
* SWT Minor version number (must be in the range 0..999)
*/
static int MINOR_VERSION = 758;
/**
* 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;
static final String DELIMITER;
/* 64-bit support */
static final boolean IS_64 = longConst() == (long /*int*/)longConst();
static final String SUFFIX_64 = "-64"; //$NON-NLS-1$
static final String SWT_LIB_DIR;
static {
DELIMITER = System.getProperty("line.separator"); //$NON-NLS-1$
SEPARATOR = System.getProperty("file.separator"); //$NON-NLS-1$
SWT_LIB_DIR = ".swt" + SEPARATOR + "lib" + SEPARATOR + os() + SEPARATOR + arch(); //$NON-NLS-1$ $NON-NLS-2$
JAVA_VERSION = parseVersion(System.getProperty("java.version")); //$NON-NLS-1$
SWT_VERSION = SWT_VERSION(MAJOR_VERSION, MINOR_VERSION);
}
static String arch() {
String osArch = System.getProperty("os.arch"); //$NON-NLS-1$
if (osArch.equals ("i386") || osArch.equals ("i686")) return "x86"; //$NON-NLS-1$ $NON-NLS-2$ $NON-NLS-3$
if (osArch.equals ("amd64")) return "x86_64"; //$NON-NLS-1$ $NON-NLS-2$
if (osArch.equals ("IA64N")) return "ia64_32"; //$NON-NLS-1$ $NON-NLS-2$
if (osArch.equals ("IA64W")) return "ia64"; //$NON-NLS-1$ $NON-NLS-2$
return osArch;
}
static String os() {
String osName = System.getProperty("os.name"); //$NON-NLS-1$
if (osName.equals ("Linux")) return "linux"; //$NON-NLS-1$ $NON-NLS-2$
if (osName.equals ("AIX")) return "aix"; //$NON-NLS-1$ $NON-NLS-2$
if (osName.equals ("Solaris") || osName.equals ("SunOS")) return "solaris"; //$NON-NLS-1$ $NON-NLS-2$ $NON-NLS-3$
if (osName.equals ("HP-UX")) return "hpux"; //$NON-NLS-1$ $NON-NLS-2$
if (osName.equals ("Mac OS X")) return "macosx"; //$NON-NLS-1$ $NON-NLS-2$
if (osName.startsWith ("Win")) return "win32"; //$NON-NLS-1$ $NON-NLS-2$
return osName;
}
static void chmod(String permision, String path) {
if (os().equals ("win32")) return; //$NON-NLS-1$
try {
Runtime.getRuntime ().exec (new String []{"chmod", permision, path}).waitFor(); //$NON-NLS-1$
} catch (Throwable e) {}
}
/* Use method instead of in-lined constants to avoid compiler warnings */
static long longConst() {
return 0x1FFFFFFFFL;
}
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, StringBuffer message) {
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 ();
chmod ("755", fileName);
if (load (fileName, message)) 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 isLoadable () {
URL url = Platform.class.getClassLoader ().getResource ("org/eclipse/swt/internal/Library.class"); //$NON-NLS-1$
if (!url.getProtocol ().equals ("jar")) { //$NON-NLS-1$
/* SWT is presumably running in a development environment */
return true;
}
Attributes attributes = null;
try {
URLConnection connection = url.openConnection();
if (!(connection instanceof JarURLConnection)) {
/* should never happen for a "jar:" url */
return false;
}
JarURLConnection jc = (JarURLConnection) connection;
attributes = jc.getMainAttributes();
} catch (IOException e) {
/* should never happen for a valid SWT jar with the expected manifest values */
return false;
}
String os = os ();
String arch = arch ();
String manifestOS = attributes.getValue ("SWT-OS"); //$NON-NLS-1$
String manifestArch = attributes.getValue ("SWT-Arch"); //$NON-NLS-1$
if (arch.equals (manifestArch) && os.equals (manifestOS)) {
return true;
}
/*
* Mac has a special case since SWT's 32-bit libraries on Mac contain natives
* for both the x86 and PPC architectures. For this reason SWT's manifest file
* for 32-bit Mac does not specify a value for SWT-Arch.
*/
if (os.equals ("macosx") && os.equals (manifestOS)) { //$NON-NLS-1$
return manifestArch.length () == 0 && (arch.equals ("ppc") || arch.equals ("x86")); //$NON-NLS-1$ //$NON-NLS-2$
}
return false;
}
static boolean load (String libName, StringBuffer message) {
try {
if (libName.indexOf (SEPARATOR) != -1) {
System.load (libName);
} else {
System.loadLibrary (libName);
}
return true;
} catch (UnsatisfiedLinkError e) {
if (message.length() == 0) message.append(DELIMITER);
message.append('\t');
message.append(e.getMessage());
message.append(DELIMITER);
}
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
* name is used to load the library. If this fails,
* name 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
* name is used to load the library. If this fails,
* name 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;
}
StringBuffer message = new StringBuffer();
/* 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, message)) return;
if (mapName && load (path + SEPARATOR + mappedName2, message)) return;
}
/* Try loading library from java library path */
if (load (libName1, message)) return;
if (mapName && load (libName2, message)) 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 ("user.home"); //$NON-NLS-1$
File dir = new File (path, SWT_LIB_DIR);
if ((dir.exists () && dir.isDirectory ()) || dir.mkdirs ()) {
path = dir.getAbsolutePath ();
} else {
/* fall back to using the home dir directory */
if (IS_64) {
fileName1 = mapLibraryName (libName1 + SUFFIX_64);
fileName2 = mapLibraryName (libName2 + SUFFIX_64);
}
}
if (load (path + SEPARATOR + fileName1, message)) return;
if (mapName && load (path + SEPARATOR + fileName2, message)) return;
}
/* Try extracting and loading library from jar */
if (path != null) {
if (extract (path + SEPARATOR + fileName1, mappedName1, message)) return;
if (mapName && extract (path + SEPARATOR + fileName2, mappedName2, message)) return;
}
/* Failed to find the library */
throw new UnsatisfiedLinkError ("Could not load SWT library. Reasons: " + message.toString()); //$NON-NLS-1$
}
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;
}
}
