| package org.eclipse.swt.program;
|
|
|
| /*
|
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.photon.*;
|
| import org.eclipse.swt.*;
|
| import org.eclipse.swt.graphics.*;
|
|
|
| import java.io.*;
|
|
|
| /**
|
| * Instances of this class represent programs and
|
| * their assoicated file extensions in the operating
|
| * system.
|
| */ |
| public final class Program {
|
| String name;
|
| String extension;
|
| String command;
|
|
|
| /**
|
| * Prevents uninitialized instances from being created outside the package.
|
| */ |
| Program () {
|
| }
|
|
|
| /**
|
| * Finds the program that is associated with an extension.
|
| * The extension may or may not begin with a '.'.
|
| *
|
| * @param extension the program extension
|
| * @return the program or nil
|
| *
|
| * @exception SWTError <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;
|
| String[][] table = loadAssociationTable ();
|
| if (table == null) return null;
|
| for (int i = 0; i < table.length; i++) {
|
| String[] entry = table [i];
|
| if (entry == null) break;
|
| String [] exts = expandExtensions (entry [0]);
|
| for (int j = 0; j < exts.length; j++) {
|
| String ext = exts[j];
|
| if (ext == null) break;
|
| if (ext.endsWith (extension)) {
|
| Program program = new Program ();
|
| program.extension = ext;
|
| program.command = entry [1];
|
| int index;
|
| String name = entry [1];
|
| if ((index = name.indexOf(' ')) != -1) {
|
| name = name.substring (0, index);
|
| }
|
| program.name = name;
|
| return program;
|
| }
|
| }
|
| }
|
| return null;
|
| }
|
|
|
| /**
|
| * Answer all program extensions in the operating system.
|
| *
|
| * @return an array of extensions
|
| */ |
| public static String [] getExtensions () {
|
| String[][] table = loadAssociationTable ();
|
| if (table == null) return new String [0];
|
| int count = 0;
|
| String[] extensions = new String [50];
|
| for (int i = 0; i < table.length; i++) { |
| String[] entry = table [i];
|
| if (entry == null) break; |
| String [] exts = expandExtensions (entry [0]);
|
| for (int j = 0; j < exts.length; j++) { |
| String ext = exts[j]; |
| if (ext == null) break; |
| if (count == extensions.length) {
|
| String [] newExtensions = new String [count + 50];
|
| System.arraycopy (extensions, 0, newExtensions, 0, count);
|
| extensions = newExtensions;
|
| }
|
| extensions[count++] = ext; |
| }
|
| }
|
| if (count != extensions.length) {
|
| String [] newExtensions = new String [count];
|
| System.arraycopy (extensions, 0, newExtensions, 0, count);
|
| extensions = newExtensions;
|
| }
|
| return extensions;
|
| }
|
|
|
| /**
|
| * Answers all available programs in the operating system.
|
| *
|
| * @return an array of programs
|
| */ |
| public static Program [] getPrograms () {
|
| String[][] table = loadAssociationTable ();
|
| if (table == null) return new Program [0];
|
| int count = 0;
|
| Program [] programs = new Program [50];
|
| for (int i = 0; i < table.length; i++) {
|
| String [] entry = table [i];
|
| if (entry == null) break;
|
| String [] extensions = expandExtensions (entry [0]);
|
| for (int j = 0; j < extensions.length; j++) { |
| String extension = extensions[j];
|
| if (extension == null) break;
|
| Program program = new Program ();
|
| program.extension = extension;
|
| program.command = entry [1];
|
| int index;
|
| String name = entry [1];
|
| if ((index = name.indexOf(' ')) != -1) {
|
| name = name.substring (0, index);
|
| }
|
| program.name = name;
|
| if (count == programs.length) {
|
| Program [] newPrograms = new Program [count + 50];
|
| System.arraycopy (programs, 0, newPrograms, 0, count);
|
| programs = newPrograms;
|
| }
|
| programs [count++] = program; |
| }
|
| }
|
| 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.
|
| *
|
| * @param fileName the file or program name
|
| * @return <code>true</code> if the file is launched, otherwise <code>false</code>
|
| *
|
| * @exception SWTError <ul>
|
| * <li>ERROR_NULL_ARGUMENT when fileName is null</li>
|
| * </ul>
|
| */ |
| public static boolean launch (String fileName) {
|
| if (fileName == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
|
| int index = fileName.lastIndexOf ('.');
|
| if (index == -1) return false;
|
| String extension = fileName.substring (index, fileName.length ());
|
| Program program = Program.findProgram (extension);
|
| if (program != null && program.execute (fileName)) return true;
|
| try {
|
| Compatibility.exec(fileName);
|
| return true;
|
| } catch (IOException e) {
|
| return false;
|
| }
|
| }
|
|
|
| static String [] expandExtensions (String ext) {
|
| int start = 0, index = 0, count = 0, length = ext.length ();
|
| String[] extensions = new String [5];
|
| while (index < length) {
|
| index = ext.indexOf ('|', start);
|
| if (index == -1) index = length;
|
| String extension = ext.substring (start, index).trim();
|
| start = index + 1;
|
| int bracketStart = extension.indexOf('[');
|
| if (bracketStart != -1) {
|
| int bracketEnd = extension.indexOf(']', bracketStart);
|
| if (bracketEnd != -1) {
|
| String prefix = extension.substring (0, bracketStart);
|
| String suffix = extension.substring (bracketEnd + 1, extension.length ());
|
| String chars = extension.substring (bracketStart + 1, bracketEnd);
|
| for (int i=0; i<chars.length (); i++) {
|
| if (count == extensions.length) {
|
| String [] newExtensions = new String [count + 5];
|
| System.arraycopy (extensions, 0, newExtensions, 0, count);
|
| extensions = newExtensions;
|
| }
|
| extensions [count++] = prefix + chars.charAt (i) + suffix;
|
| }
|
| }
|
| } else {
|
| if (count == extensions.length) {
|
| String [] newExtensions = new String [count + 5];
|
| System.arraycopy (extensions, 0, newExtensions, 0, count);
|
| extensions = newExtensions;
|
| }
|
| extensions [count++] = extension;
|
| }
|
| }
|
| return extensions;
|
| }
|
|
|
| static String [][] loadAssociationTable () {
|
| FileInputStream is = null;
|
| try {
|
| byte[] buffer = Converter.wcsToMbcs (null, "HOME", true);
|
| int ptr = OS.getenv (buffer);
|
| if (ptr == 0) return null;
|
| int length = OS.strlen (ptr);
|
| if (length == 0) return null;
|
| buffer = new byte [length];
|
| OS.memmove (buffer, ptr, length);
|
| String home = new String (Converter.mbcsToWcs (null, buffer));
|
| is = new FileInputStream (home + "/.ph/pfm/associate.003");
|
| BufferedReader reader = new BufferedReader (new InputStreamReader (is));
|
| String line;
|
| int count = 0;
|
| String [][] table = new String [50][];
|
| while ((line = reader.readLine ()) != null) {
|
| if (line.trim().startsWith ("#")) continue;
|
| int start = 0, tabIndex = line.indexOf ('\t', start);
|
| if (tabIndex == -1) continue;
|
| String extension = line.substring (start, tabIndex);
|
| start = tabIndex + 1;
|
| tabIndex = line.indexOf ('\t', start);
|
| if (tabIndex == -1) continue;
|
| String command = line.substring (start, tabIndex);
|
| if (count == table.length) {
|
| String [][] newTable = new String [table.length + 50][];
|
| System.arraycopy (table, 0, newTable, 0, table.length);
|
| table = newTable;
|
| }
|
| String[] entry = new String [] {extension, command};
|
| table [count++] = entry;
|
| }
|
| return table;
|
| } catch (IOException e) {
|
| } finally {
|
| try {
|
| if (is != null) is.close();
|
| } catch (IOException e) {}
|
| }
|
| return null;
|
| }
|
|
|
| /** |
| * 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 SWTError <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);
|
| int index = -1;
|
| String prefix = command, suffix = "", location = "";
|
| String[] locations = {"file://$PWD/@", "$PWD/@", "@"};
|
| for (int i = 0; i < locations.length; i++) { |
| location = locations[i]; |
| index = command.indexOf (location);
|
| if (index != -1) break; |
| }
|
| if (index != -1) {
|
| int start = 0;
|
| prefix = command.substring (start, index);
|
| start = index + location.length() + 1;
|
| if (start < command.length ()) {
|
| suffix = command.substring (start, command.length ());
|
| }
|
| }
|
| 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 reciever in the operating
|
| * system.
|
| *
|
| * @return the image data for the program, may be null
|
| */ |
| public ImageData getImageData () {
|
| 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 an the name of the program
|
| */ |
| public String getName () {
|
| return name;
|
| }
|
|
|
| /**
|
| * Returns true if the receiver and the argument represent
|
| * the same program.
|
| *
|
| * @return true if the programs are the same
|
| */ |
| public boolean equals(Object other) {
|
| if (this == other) return true;
|
| if (other instanceof Program) {
|
| final Program program = (Program) other;
|
| return extension.equals(program.extension) && name.equals(program.name) &&
|
| command.equals(program.command);
|
| }
|
| return false;
|
| }
|
|
|
| /**
|
| * Returns a hash code suitable for this object.
|
| *
|
| * @return a hash code
|
| */ |
| public int hashCode() {
|
| return extension.hashCode() ^ name.hashCode() ^ command.hashCode();
|
| }
|
|
|
| public String toString () {
|
| return "Program {" + name + "}";
|
| }
|
|
|
| } |