bundles/org.eclipse.swt/Eclipse SWT Program/wpf/org/eclipse/swt/program/Program.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * 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
  *******************************************************************************/
 package org.eclipse.swt.program;


 import java.io.IOException;

 import org.eclipse.swt.internal.*;
 import org.eclipse.swt.internal.wpf.*;
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;

 /**
  * Instances of this class represent programs and
  * their associated file extensions in the operating
  * system.
  */
 public final class Program {
 	String name;
 	String command;
 	String iconName;

 /**
  * Prevents uninitialized instances from being created outside the package.
  */
 Program () {
 }

 static int createDotNetString (String string) {
 	if (string == null) return 0;
 	int length = string.length ();
 	char [] buffer = new char [length + 1];
 	string.getChars (0, length, buffer, 0);
 	return OS.gcnew_String (buffer);
 }

 static String createJavaString (int ptr) {
 	int charArray = OS.String_ToCharArray (ptr);
 	char[] chars = new char[OS.String_Length (ptr)];
 	OS.memcpy (chars, charArray, chars.length * 2);
 	OS.GCHandle_Free (charArray);
 	return new String (chars);
 }

 /**
  * Finds the program that is associated with an extension.
  * The extension may or may not begin with a '.'.  Note that
  * a <code>Display</code> must already exist to guarantee that
  * this method returns an appropriate result.
  *
  * @param extension the program extension
  * @return the program or <code>null</code>
  *
  * @exception IllegalArgumentException <ul>
  *		<li>ERROR_NULL_ARGUMENT when extension is null</li>
  *	</ul>
  */
 public static Program findProgram (String extension) {
 	if (extension == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	if (extension.length () == 0) return null;
 	if (extension.charAt (0) != '.') extension = "." + extension; //$NON-NLS-1$
 	int key = createDotNetString (extension);
 	int classesRoot = OS.Registry_ClassesRoot ();
 	int registryKey = OS.RegistryKey_OpenSubKey (classesRoot, key);
 	OS.GCHandle_Free (key);
 	OS.GCHandle_Free (classesRoot);
 	if (registryKey == 0) return null;
 	Program program = null;
 	int value = OS.RegistryKey_GetValue (registryKey, 0);
 	if (value != 0) {
 		String string = createJavaString (value);
 		program = getProgram (string);
 		OS.GCHandle_Free (value);
 	}
 	OS.GCHandle_Free (registryKey);
 	return program;
 }

 /**
  * Answer all program extensions in the operating system.  Note
  * that a <code>Display</code> must already exist to guarantee
  * that this method returns an appropriate result.
  *
  * @return an array of extensions
  */
 public static String [] getExtensions () {
 	//TODO
 	return new String[0];
 }

 static String getKeyValue (String string, boolean expand) {
 	int classesRoot = OS.Registry_ClassesRoot ();
 	int key = createDotNetString (string);
 	int registryKey = OS.RegistryKey_OpenSubKey (classesRoot, key);
 	OS.GCHandle_Free (key);
 	OS.GCHandle_Free (classesRoot);
 	if (registryKey == 0) return null;
 	String result = null;
 	int value = OS.RegistryKey_GetValue (registryKey, 0);
 	if (value != 0) {
 		if (expand) {
 			int expandedValue = OS.Environment_ExpandEnvironmentVariables (value);
 			OS.GCHandle_Free (value);
 			value = expandedValue;
 		}
 		result = createJavaString (value);
 		OS.GCHandle_Free (value);
 	}
 	OS.GCHandle_Free (registryKey);
 	return result;
 }

 static Program getProgram (String key) {
 	/* Name */
 	String name = getKeyValue (key, false);
 	if (name == null || name.length () == 0) {
 		name = key;
 	}

 	/* Command */
 	String DEFAULT_COMMAND = "\\shell"; //$NON-NLS-1$
 	String defaultCommand = getKeyValue (key + DEFAULT_COMMAND, true);
 	if (defaultCommand == null || defaultCommand.length() == 0) defaultCommand = "open"; //$NON-NLS-1$
 	String COMMAND = "\\shell\\" + defaultCommand + "\\command"; //$NON-NLS-1$
 	String command = getKeyValue (key + COMMAND, true);
 	if (command == null || command.length () == 0) return null;

 	/* Icon */
 	String DEFAULT_ICON = "\\DefaultIcon"; //$NON-NLS-1$
 	String iconName = getKeyValue (key + DEFAULT_ICON, true);
 	if (iconName == null) iconName = ""; //$NON-NLS-1$

 	Program program = new Program ();
 	program.name = name;
 	program.command = command;
 	program.iconName = iconName;
 	return program;
 }

 /**
  * Answers all available programs in the operating system.  Note
  * that a <code>Display</code> must already exist to guarantee
  * that this method returns an appropriate result.
  *
  * @return an array of programs
  */
 public static Program [] getPrograms () {
 	//TODO compare results with win32.
 	Program [] programs = new Program [1024];
 	int classesRoot = OS.Registry_ClassesRoot ();
 	int names = OS.RegistryKey_GetSubKeyNames (classesRoot);
 	OS.GCHandle_Free (classesRoot);
 	int length = OS.ICollection_Count (names);
 	int count = 0;
 	for (int i = 0; i < length; i++) {
 		int name = OS.IList_default (names, i);
 		String string = createJavaString (name);
 		OS.GCHandle_Free (name);
 		Program program = getProgram (string);
 		if (program != null) {
 			if (count == programs.length) {
 				Program [] newPrograms = new Program [programs.length + 1024];
 				System.arraycopy (programs, 0, newPrograms, 0, programs.length);
 				programs = newPrograms;
 			}
 			programs [count++] = program;
 		}
 	}
 	OS.GCHandle_Free (names);
 	if (count != programs.length) {
 		Program [] newPrograms = new Program [count];
 		System.arraycopy (programs, 0, newPrograms, 0, count);
 		programs = newPrograms;
 	}
 	return programs;
 }

 /**
  * Launches the executable associated with the file in
  * the operating system.  If the file is an executable,
  * then the executable is launched.  Note that a <code>Display</code>
  * must already exist to guarantee that this method returns
  * an appropriate result.
  *
  * @param fileName the file or program name
  * @return <code>true</code> if the file is launched, otherwise <code>false</code>
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT when fileName is null</li>
  * </ul>
  */
 public static boolean launch (String fileName) {
 	//TODO
 	return false;
 }

 /**
  * Executes the program with the file as the single argument
  * in the operating system.  It is the responsibility of the
  * programmer to ensure that the file contains valid data for
  * this program.
  *
  * @param fileName the file or program name
  * @return <code>true</code> if the file is launched, otherwise <code>false</code>
  *
  * @exception IllegalArgumentException <ul>
  *    <li>ERROR_NULL_ARGUMENT when fileName is null</li>
  * </ul>
  */
 public boolean execute (String fileName) {
 	if (fileName == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	boolean quote = true;
 	String prefix = command, suffix = ""; //$NON-NLS-1$
 	int index = command.indexOf ("%1"); //$NON-NLS-1$
 	if (index != -1) {
 		int count=0;
 		int i=index + 2, length = command.length ();
 		while (i < length) {
 			if (command.charAt (i) == '"') count++;
 			i++;
 		}
 		quote = count % 2 == 0;
 		prefix = command.substring (0, index);
 		suffix = command.substring (index + 2, length);
 	}
 	if (quote) fileName = " \"" + fileName + "\""; //$NON-NLS-1$ //$NON-NLS-2$
 	try {
 		Compatibility.exec(prefix + fileName + suffix);
 	} catch (IOException e) {
 		return false;
 	}
 	return true;
 }

 /**
  * Returns the receiver's image data.  This is the icon
  * that is associated with the receiver in the operating
  * system.
  *
  * @return the image data for the program, may be null
  */
 public ImageData getImageData () {
 	//TODO
 	return null;
 }

 /**
  * Returns the receiver's name.  This is as short and
  * descriptive a name as possible for the program.  If
  * the program has no descriptive name, this string may
  * be the executable name, path or empty.
  *
  * @return the name of the program
  */
 public String getName () {
 	return name;
 }

 /**
  * Compares the argument to the receiver, and returns true
  * if they represent the <em>same</em> object using a class
  * specific comparison.
  *
  * @param other the object to compare with this object
  * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
  *
  * @see #hashCode()
  */
 public boolean equals(Object other) {
 	if (this == other) return true;
 	if (other instanceof Program) {
 		final Program program = (Program) other;
 		return name.equals(program.name) && command.equals(program.command)
 			&& iconName.equals(program.iconName);
 	}
 	return false;
 }

 /**
  * Returns an integer hash code for the receiver. Any two
  * objects that return <code>true</code> when passed to
  * <code>equals</code> must return the same value for this
  * method.
  *
  * @return the receiver's hash
  *
  * @see #equals(Object)
  */
 public int hashCode() {
 	return name.hashCode() ^ command.hashCode() ^ iconName.hashCode();
 }

 /**
  * Returns a string containing a concise, human-readable
  * description of the receiver.
  *
  * @return a string representation of the program
  */
 public String toString () {
 	return "Program {" + name + "}"; //$NON-NLS-1$ //$NON-NLS-2$
 }

 }
	/*******************************************************************************
	* 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
	*******************************************************************************/
	package org.eclipse.swt.program;


	import java.io.IOException;

	import org.eclipse.swt.internal.*;
	import org.eclipse.swt.internal.wpf.*;
	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;

	/**
	* Instances of this class represent programs and
	* their associated file extensions in the operating
	* system.
	*/
	public final class Program {
	String name;
	String command;
	String iconName;

	/**
	* Prevents uninitialized instances from being created outside the package.
	*/
	Program () {
	}

	static int createDotNetString (String string) {
	if (string == null) return 0;
	int length = string.length ();
	char [] buffer = new char [length + 1];
	string.getChars (0, length, buffer, 0);
	return OS.gcnew_String (buffer);
	}

	static String createJavaString (int ptr) {
	int charArray = OS.String_ToCharArray (ptr);
	char[] chars = new char[OS.String_Length (ptr)];
	OS.memcpy (chars, charArray, chars.length * 2);
	OS.GCHandle_Free (charArray);
	return new String (chars);
	}

	/**
	* Finds the program that is associated with an extension.
	* The extension may or may not begin with a '.'. Note that
	* a <code>Display</code> must already exist to guarantee that
	* this method returns an appropriate result.
	*
	* @param extension the program extension
	* @return the program or <code>null</code>
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT when extension is null</li>
	* </ul>
	*/
	public static Program findProgram (String extension) {
	if (extension == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	if (extension.length () == 0) return null;
	if (extension.charAt (0) != '.') extension = "." + extension; //$NON-NLS-1$
	int key = createDotNetString (extension);
	int classesRoot = OS.Registry_ClassesRoot ();
	int registryKey = OS.RegistryKey_OpenSubKey (classesRoot, key);
	OS.GCHandle_Free (key);
	OS.GCHandle_Free (classesRoot);
	if (registryKey == 0) return null;
	Program program = null;
	int value = OS.RegistryKey_GetValue (registryKey, 0);
	if (value != 0) {
	String string = createJavaString (value);
	program = getProgram (string);
	OS.GCHandle_Free (value);
	}
	OS.GCHandle_Free (registryKey);
	return program;
	}

	/**
	* Answer all program extensions in the operating system. Note
	* that a <code>Display</code> must already exist to guarantee
	* that this method returns an appropriate result.
	*
	* @return an array of extensions
	*/
	public static String [] getExtensions () {
	//TODO
	return new String[0];
	}

	static String getKeyValue (String string, boolean expand) {
	int classesRoot = OS.Registry_ClassesRoot ();
	int key = createDotNetString (string);
	int registryKey = OS.RegistryKey_OpenSubKey (classesRoot, key);
	OS.GCHandle_Free (key);
	OS.GCHandle_Free (classesRoot);
	if (registryKey == 0) return null;
	String result = null;
	int value = OS.RegistryKey_GetValue (registryKey, 0);
	if (value != 0) {
	if (expand) {
	int expandedValue = OS.Environment_ExpandEnvironmentVariables (value);
	OS.GCHandle_Free (value);
	value = expandedValue;
	}
	result = createJavaString (value);
	OS.GCHandle_Free (value);
	}
	OS.GCHandle_Free (registryKey);
	return result;
	}

	static Program getProgram (String key) {
	/* Name */
	String name = getKeyValue (key, false);
	if (name == null \|\| name.length () == 0) {
	name = key;
	}

	/* Command */
	String DEFAULT_COMMAND = "\\shell"; //$NON-NLS-1$
	String defaultCommand = getKeyValue (key + DEFAULT_COMMAND, true);
	if (defaultCommand == null \|\| defaultCommand.length() == 0) defaultCommand = "open"; //$NON-NLS-1$
	String COMMAND = "\\shell\\" + defaultCommand + "\\command"; //$NON-NLS-1$
	String command = getKeyValue (key + COMMAND, true);
	if (command == null \|\| command.length () == 0) return null;

	/* Icon */
	String DEFAULT_ICON = "\\DefaultIcon"; //$NON-NLS-1$
	String iconName = getKeyValue (key + DEFAULT_ICON, true);
	if (iconName == null) iconName = ""; //$NON-NLS-1$

	Program program = new Program ();
	program.name = name;
	program.command = command;
	program.iconName = iconName;
	return program;
	}

	/**
	* Answers all available programs in the operating system. Note
	* that a <code>Display</code> must already exist to guarantee
	* that this method returns an appropriate result.
	*
	* @return an array of programs
	*/
	public static Program [] getPrograms () {
	//TODO compare results with win32.
	Program [] programs = new Program [1024];
	int classesRoot = OS.Registry_ClassesRoot ();
	int names = OS.RegistryKey_GetSubKeyNames (classesRoot);
	OS.GCHandle_Free (classesRoot);
	int length = OS.ICollection_Count (names);
	int count = 0;
	for (int i = 0; i < length; i++) {
	int name = OS.IList_default (names, i);
	String string = createJavaString (name);
	OS.GCHandle_Free (name);
	Program program = getProgram (string);
	if (program != null) {
	if (count == programs.length) {
	Program [] newPrograms = new Program [programs.length + 1024];
	System.arraycopy (programs, 0, newPrograms, 0, programs.length);
	programs = newPrograms;
	}
	programs [count++] = program;
	}
	}
	OS.GCHandle_Free (names);
	if (count != programs.length) {
	Program [] newPrograms = new Program [count];
	System.arraycopy (programs, 0, newPrograms, 0, count);
	programs = newPrograms;
	}
	return programs;
	}

	/**
	* Launches the executable associated with the file in
	* the operating system. If the file is an executable,
	* then the executable is launched. Note that a <code>Display</code>
	* must already exist to guarantee that this method returns
	* an appropriate result.
	*
	* @param fileName the file or program name
	* @return <code>true</code> if the file is launched, otherwise <code>false</code>
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT when fileName is null</li>
	* </ul>
	*/
	public static boolean launch (String fileName) {
	//TODO
	return false;
	}

	/**
	* Executes the program with the file as the single argument
	* in the operating system. It is the responsibility of the
	* programmer to ensure that the file contains valid data for
	* this program.
	*
	* @param fileName the file or program name
	* @return <code>true</code> if the file is launched, otherwise <code>false</code>
	*
	* @exception IllegalArgumentException <ul>
	* <li>ERROR_NULL_ARGUMENT when fileName is null</li>
	* </ul>
	*/
	public boolean execute (String fileName) {
	if (fileName == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
	boolean quote = true;
	String prefix = command, suffix = ""; //$NON-NLS-1$
	int index = command.indexOf ("%1"); //$NON-NLS-1$
	if (index != -1) {
	int count=0;
	int i=index + 2, length = command.length ();
	while (i < length) {
	if (command.charAt (i) == '"') count++;
	i++;
	}
	quote = count % 2 == 0;
	prefix = command.substring (0, index);
	suffix = command.substring (index + 2, length);
	}
	if (quote) fileName = " \"" + fileName + "\""; //$NON-NLS-1$ //$NON-NLS-2$
	try {
	Compatibility.exec(prefix + fileName + suffix);
	} catch (IOException e) {
	return false;
	}
	return true;
	}

	/**
	* Returns the receiver's image data. This is the icon
	* that is associated with the receiver in the operating
	* system.
	*
	* @return the image data for the program, may be null
	*/
	public ImageData getImageData () {
	//TODO
	return null;
	}

	/**
	* Returns the receiver's name. This is as short and
	* descriptive a name as possible for the program. If
	* the program has no descriptive name, this string may
	* be the executable name, path or empty.
	*
	* @return the name of the program
	*/
	public String getName () {
	return name;
	}

	/**
	* Compares the argument to the receiver, and returns true
	* if they represent the <em>same</em> object using a class
	* specific comparison.
	*
	* @param other the object to compare with this object
	* @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
	*
	* @see #hashCode()
	*/
	public boolean equals(Object other) {
	if (this == other) return true;
	if (other instanceof Program) {
	final Program program = (Program) other;
	return name.equals(program.name) && command.equals(program.command)
	&& iconName.equals(program.iconName);
	}
	return false;
	}

	/**
	* Returns an integer hash code for the receiver. Any two
	* objects that return <code>true</code> when passed to
	* <code>equals</code> must return the same value for this
	* method.
	*
	* @return the receiver's hash
	*
	* @see #equals(Object)
	*/
	public int hashCode() {
	return name.hashCode() ^ command.hashCode() ^ iconName.hashCode();
	}

	/**
	* Returns a string containing a concise, human-readable
	* description of the receiver.
	*
	* @return a string representation of the program
	*/
	public String toString () {
	return "Program {" + name + "}"; //$NON-NLS-1$ //$NON-NLS-2$
	}

	}