diff dwt/internal/Library.d @ 9:ad2b69216039

moved org.eclipse.swt to dwt
author Frank Benoit <benoit@tionex.de>
date Sat, 05 Jan 2008 17:39:49 +0100
parents org/eclipse/swt/internal/Library.d@c8ad75f8819e
children 63c023465156
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/internal/Library.d	Sat Jan 05 17:39:49 2008 +0100
@@ -0,0 +1,232 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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
+ *******************************************************************************/
+module org.eclipse.swt.internal.Library;
+
+import tango.util.Convert;
+
+public class Library {
+
+	/* SWT Version - Mmmm (M=major, mmm=minor) */
+
+	/**
+	 * SWT Major version number (must be >= 0)
+	 */
+    static const int MAJOR_VERSION = 3;
+
+	/**
+	 * SWT Minor version number (must be in the range 0..999)
+	 */
+    static const int MINOR_VERSION = 346;
+
+	/**
+	 * SWT revision number (must be >= 0)
+	 */
+	static const int REVISION = 0;
+
+	/**
+	 * The JAVA and SWT versions
+	 */
+	//public static const int JAVA_VERSION;
+    public static const int SWT_VERSION;
+
+    version( linux ){
+        static const char[] SEPARATOR = "\n";
+    }
+    else {
+        static assert( false, "only linux supported for this port" );
+    }
+
+
+static this(){
+	//SEPARATOR = System.getProperty("file.separator");
+	//JAVA_VERSION = parseVersion(System.getProperty("java.version"));
+	SWT_VERSION = buildSWT_VERSION(MAJOR_VERSION, MINOR_VERSION);
+}
+
+static int parseVersion(char[] aVersion) {
+	if (aVersion == null) return 0;
+	int major = 0, minor = 0, micro = 0;
+	int length = aVersion.length, index = 0, start = 0;
+    bool isDigit( char c ){
+        return c >= '0' && c <= '9';
+    }
+	while (index < length && isDigit(aVersion[index])) index++;
+	try {
+		if (start < length) major = to!(int)( aVersion[start .. index] );
+	} catch (ConversionException e) {}
+	start = ++index;
+	while (index < length && isDigit(aVersion[index])) index++;
+	try {
+		if (start < length) minor = to!(int)(aVersion[start .. index]);
+	} catch (ConversionException e) {}
+	start = ++index;
+	while (index < length && isDigit(aVersion[index])) index++;
+	try {
+		if (start < length) micro = to!(int)(aVersion[start .. index]);
+	} catch (ConversionException e) {}
+	return buildJAVA_VERSION(major, minor, micro);
+}
+
+/**
+ * Returns the Java version number as an integer.
+ *
+ * @param major
+ * @param minor
+ * @param micro
+ * @return the version
+ */
+public static int buildJAVA_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 buildSWT_VERSION (int major, int minor) {
+	return major * 1000 + minor;
+}
+/+ PORTING_LEFT
+static bool extract (char[] fileName, char[] mappedName) {
+	FileOutputStream os = null;
+	InputStream is = null;
+	File file = new File(fileName);
+	try {
+		if (!file.exists ()) {
+			is = Library.class.getResourceAsStream ("/" + mappedName); //$NON-NLS-1$
+			if (is != null) {
+				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 (file.exists ()) file.delete ();
+	return false;
+}
+
+static bool load (char[] 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 (char[] 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 (char[] name, boolean mapName) {
+
+	/* 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 = System.mapLibraryName (libName1);
+		mappedName2 = System.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 */
+	if (path == null) {
+		path = System.getProperty ("java.io.tmpdir"); //$NON-NLS-1$
+		path = new File (path).getAbsolutePath ();
+		if (load (path + SEPARATOR + mappedName1)) return;
+		if (mapName && load (path + SEPARATOR + mappedName2)) return;
+	}
+
+	/* Try extracting and loading library from jar */
+	if (path != null) {
+		if (extract (path + SEPARATOR + mappedName1, mappedName1)) return;
+		if (mapName && extract (path + SEPARATOR + mappedName2, 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"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
+}
++/
+}