| /******************************************************************************* |
| * Copyright (c) 2000, 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.program; |
| |
| import java.io.*; |
| import java.nio.file.*; |
| import java.nio.file.Path; |
| import java.util.*; |
| import java.util.List; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * Instances of this class represent programs and |
| * their associated file extensions in the operating |
| * system. |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#program">Program snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| */ |
| public final class Program { |
| String name = ""; //$NON-NLS-1$ |
| String command; |
| String iconPath; |
| Display display; |
| |
| /* GIO specific |
| * true if command expects a URI |
| * false if expects a path |
| */ |
| boolean gioExpectUri; |
| |
| static long modTime; |
| static Map<String, List<String>> mimeTable; |
| |
| static final String PREFIX_HTTP = "http://"; //$NON-NLS-1$ |
| static final String PREFIX_HTTPS = "https://"; //$NON-NLS-1$ |
| |
| /** |
| * Prevents uninitialized instances from being created outside the package. |
| */ |
| Program() { |
| } |
| |
| static String[] parseCommand(String cmd) { |
| List<String> args = new ArrayList<>(); |
| int sIndex = 0; |
| int eIndex; |
| while (sIndex < cmd.length()) { |
| /* Trim initial white space of argument. */ |
| while (sIndex < cmd.length() && Character.isWhitespace(cmd.charAt(sIndex))) { |
| sIndex++; |
| } |
| if (sIndex < cmd.length()) { |
| /* If the command is a quoted string */ |
| if (cmd.charAt(sIndex) == '"' || cmd.charAt(sIndex) == '\'') { |
| /* Find the terminating quote (or end of line). |
| * This code currently does not handle escaped characters (e.g., " a\"b"). |
| */ |
| eIndex = sIndex + 1; |
| while (eIndex < cmd.length() && cmd.charAt(eIndex) != cmd.charAt(sIndex)) eIndex++; |
| if (eIndex >= cmd.length()) { |
| /* The terminating quote was not found |
| * Add the argument as is with only one initial quote. |
| */ |
| args.add(cmd.substring(sIndex, eIndex)); |
| } else { |
| /* Add the argument, trimming off the quotes. */ |
| args.add(cmd.substring(sIndex + 1, eIndex)); |
| } |
| sIndex = eIndex + 1; |
| } |
| else { |
| /* Use white space for the delimiters. */ |
| eIndex = sIndex; |
| while (eIndex < cmd.length() && !Character.isWhitespace(cmd.charAt(eIndex))) eIndex++; |
| args.add(cmd.substring(sIndex, eIndex)); |
| sIndex = eIndex + 1; |
| } |
| } |
| } |
| |
| return args.toArray(new String[args.size()]); |
| } |
| |
| /** |
| * 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) { |
| return findProgram(Display.getCurrent(), extension); |
| } |
| |
| /* |
| * API: When support for multiple displays is added, this method will |
| * become public and the original method above can be deprecated. |
| */ |
| static Program findProgram(Display display, String extension) { |
| if (extension == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| if (extension.length() == 0) return null; |
| if (extension.charAt(0) != '.') extension = "." + extension; |
| String mimeType = gio_getMimeType(extension); |
| if (mimeType == null) return null; |
| return gio_getProgram(display, mimeType); |
| } |
| |
| /** |
| * 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() { |
| return getPrograms(Display.getCurrent()); |
| } |
| |
| /** |
| * 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() { |
| if (iconPath == null) return null; |
| ImageData data = null; |
| long icon_theme =GTK.gtk_icon_theme_get_default(); |
| byte[] icon = Converter.wcsToMbcs (iconPath, true); |
| long gicon = OS.g_icon_new_for_string(icon, null); |
| if (gicon != 0) { |
| long gicon_info = GTK.gtk_icon_theme_lookup_by_gicon (icon_theme, gicon, 16/*size*/, 0); |
| if (gicon_info != 0) { |
| long pixbuf = GTK.gtk_icon_info_load_icon(gicon_info, null); |
| if (pixbuf != 0) { |
| int stride = GDK.gdk_pixbuf_get_rowstride(pixbuf); |
| long pixels = GDK.gdk_pixbuf_get_pixels(pixbuf); |
| int height = GDK.gdk_pixbuf_get_height(pixbuf); |
| int width = GDK.gdk_pixbuf_get_width(pixbuf); |
| boolean hasAlpha = GDK.gdk_pixbuf_get_has_alpha(pixbuf); |
| byte[] srcData = new byte[stride * height]; |
| C.memmove(srcData, pixels, srcData.length); |
| OS.g_object_unref(pixbuf); |
| if (hasAlpha) { |
| PaletteData palette = new PaletteData(0xFF000000, 0xFF0000, 0xFF00); |
| data = new ImageData(width, height, 32, palette, 4, srcData); |
| data.bytesPerLine = stride; |
| int s = 3, a = 0; |
| byte[] alphaData = new byte[width*height]; |
| for (int y=0; y<height; y++) { |
| for (int x=0; x<width; x++) { |
| alphaData[a++] = srcData[s]; |
| srcData[s] = 0; |
| s+=4; |
| } |
| } |
| data.alphaData = alphaData; |
| } else { |
| PaletteData palette = new PaletteData(0xFF0000, 0xFF00, 0xFF); |
| data = new ImageData(width, height, 24, palette, 4, srcData); |
| data.bytesPerLine = stride; |
| } |
| } |
| OS.g_object_unref(gicon_info); |
| } |
| OS.g_object_unref(gicon); |
| } |
| return data; |
| } |
| |
| static Map<String, List<String>> gio_getMimeInfo() { |
| /* |
| * The file 'globs' contain the file extensions associated to the |
| * mime-types. Each line that has to be parsed corresponds to a |
| * different extension of a mime-type. The template of such line is - |
| * application/pdf:*.pdf |
| */ |
| Path path = Paths.get("/usr/share/mime/globs"); |
| long lastModified = 0; |
| try { |
| lastModified = Files.getLastModifiedTime(path).toMillis(); |
| } catch (IOException e) { |
| // ignore and reparse the file |
| } |
| if (modTime != 0 && modTime == lastModified) { |
| return mimeTable; |
| } else { |
| try { |
| mimeTable = new HashMap<>(); |
| modTime = lastModified; |
| for (String line : Files.readAllLines(path)) { |
| int separatorIndex = line.indexOf(':'); |
| if (separatorIndex > 0) { |
| List<String> mimeTypes = new ArrayList<>(); |
| String mimeType = line.substring(0, separatorIndex); |
| String extensionFormat = line.substring(separatorIndex + 1); |
| int extensionIndex = extensionFormat.indexOf('.'); |
| if (extensionIndex > 0) { |
| String extension = extensionFormat.substring(extensionIndex); |
| if (mimeTable.containsKey(extension)) { |
| /* |
| * If mimeType already exists, it is required to |
| * update the existing key (mime-type) with the |
| * new extension. |
| */ |
| List<String> value = mimeTable.get(extension); |
| mimeTypes.addAll(value); |
| } |
| mimeTypes.add(mimeType); |
| mimeTable.put(extension, mimeTypes); |
| } |
| } |
| } |
| return mimeTable; |
| } catch (IOException e) { |
| } |
| } |
| return null; |
| } |
| |
| static String gio_getMimeType(String extension) { |
| String mimeType = null; |
| Map<String, List<String>> h = gio_getMimeInfo(); |
| if (h != null && h.containsKey(extension)) { |
| List<String> mimeTypes = h.get(extension); |
| mimeType = mimeTypes.get(0); |
| } |
| return mimeType; |
| } |
| |
| static Program gio_getProgram(Display display, String mimeType) { |
| Program program = null; |
| byte[] mimeTypeBuffer = Converter.wcsToMbcs (mimeType, true); |
| long application = OS.g_app_info_get_default_for_type (mimeTypeBuffer, false); |
| if (application != 0) { |
| program = gio_getProgram(display, application); |
| } |
| return program; |
| } |
| |
| static Program gio_getProgram (Display display, long application) { |
| Program program = new Program(); |
| program.display = display; |
| int length; |
| byte[] buffer; |
| long applicationName = OS.g_app_info_get_name (application); |
| if (applicationName != 0) { |
| length = C.strlen (applicationName); |
| if (length > 0) { |
| buffer = new byte [length]; |
| C.memmove (buffer, applicationName, length); |
| program.name = new String (Converter.mbcsToWcs (buffer)); |
| } |
| } |
| long applicationCommand = OS.g_app_info_get_executable (application); |
| if (applicationCommand != 0) { |
| length = C.strlen (applicationCommand); |
| if (length > 0) { |
| buffer = new byte [length]; |
| C.memmove (buffer, applicationCommand, length); |
| program.command = new String (Converter.mbcsToWcs (buffer)); |
| } |
| } |
| program.gioExpectUri = OS.g_app_info_supports_uris(application); |
| long icon = OS.g_app_info_get_icon(application); |
| if (icon != 0) { |
| long icon_name = OS.g_icon_to_string(icon); |
| if (icon_name != 0) { |
| length = C.strlen(icon_name); |
| if (length > 0) { |
| buffer = new byte[length]; |
| C.memmove(buffer, icon_name, length); |
| program.iconPath = new String(Converter.mbcsToWcs(buffer)); |
| } |
| OS.g_free(icon_name); |
| } |
| OS.g_object_unref(icon); |
| } |
| return program.command != null ? program : null; |
| } |
| |
| /* |
| * API: When support for multiple displays is added, this method will |
| * become public and the original method above can be deprecated. |
| */ |
| static Program[] getPrograms(Display display) { |
| long applicationList = OS.g_app_info_get_all (); |
| long list = applicationList; |
| Program program; |
| LinkedHashSet<Program> programs = new LinkedHashSet<>(); |
| while (list != 0) { |
| long application = OS.g_list_data(list); |
| if (application != 0) { |
| //TODO: Should the list be filtered or not? |
| // if (OS.g_app_info_should_show(application)) { |
| program = gio_getProgram(display, application); |
| if (program != null) programs.add(program); |
| // } |
| } |
| list = OS.g_list_next(list); |
| } |
| if (applicationList != 0) OS.g_list_free(applicationList); |
| return programs.toArray(new Program[programs.size()]); |
| } |
| |
| static boolean isExecutable(String fileName) { |
| byte[] fileNameBuffer = Converter.wcsToMbcs (fileName, true); |
| if (OS.g_file_test(fileNameBuffer, OS.G_FILE_TEST_IS_DIR)) return false; |
| if (!OS.g_file_test(fileNameBuffer, OS.G_FILE_TEST_IS_EXECUTABLE)) return false; |
| long file = OS.g_file_new_for_path (fileNameBuffer); |
| boolean result = false; |
| if (file != 0) { |
| byte[] buffer = Converter.wcsToMbcs ("*", true); //$NON-NLS-1$ |
| long fileInfo = OS.g_file_query_info(file, buffer, 0, 0, 0); |
| if (fileInfo != 0) { |
| long contentType = OS.g_file_info_get_content_type(fileInfo); |
| if (contentType != 0) { |
| byte[] exeType = Converter.wcsToMbcs ("application/x-executable", true); //$NON-NLS-1$ |
| result = OS.g_content_type_is_a(contentType, exeType); |
| if (!result) { |
| byte [] shellType = Converter.wcsToMbcs ("application/x-shellscript", true); //$NON-NLS-1$ |
| result = OS.g_content_type_equals(contentType, shellType); |
| } |
| } |
| OS.g_object_unref(fileInfo); |
| } |
| OS.g_object_unref (file); |
| } |
| return result; |
| } |
| |
| /** |
| * GIO - Launch the default program for the given file. |
| */ |
| static boolean gio_launch(String fileName) { |
| boolean result = false; |
| byte[] fileNameBuffer = Converter.wcsToMbcs (fileName, true); |
| long file = OS.g_file_new_for_commandline_arg (fileNameBuffer); |
| if (file != 0) { |
| long uri = OS.g_file_get_uri (file); |
| if (uri != 0) { |
| result = OS.g_app_info_launch_default_for_uri (uri, 0, 0); |
| OS.g_free(uri); |
| } |
| OS.g_object_unref (file); |
| } |
| return result; |
| } |
| |
| /** |
| * GIO - Execute the program for the given file. |
| */ |
| boolean gio_execute(String fileName) { |
| boolean result = false; |
| byte[] commandBuffer = Converter.wcsToMbcs (command, true); |
| byte[] nameBuffer = Converter.wcsToMbcs (name, true); |
| long application = OS.g_app_info_create_from_commandline(commandBuffer, nameBuffer, gioExpectUri |
| ? OS.G_APP_INFO_CREATE_SUPPORTS_URIS : OS.G_APP_INFO_CREATE_NONE, 0); |
| if (application != 0) { |
| byte[] fileNameBuffer = Converter.wcsToMbcs (fileName, true); |
| long file = 0; |
| if (fileName.length() > 0) { |
| if (OS.g_app_info_supports_uris (application)) { |
| file = OS.g_file_new_for_uri (fileNameBuffer); |
| } else { |
| file = OS.g_file_new_for_path (fileNameBuffer); |
| } |
| } |
| long list = 0; |
| if (file != 0) list = OS.g_list_append (0, file); |
| result = OS.g_app_info_launch (application, list, 0, 0); |
| if (list != 0) { |
| OS.g_list_free (list); |
| OS.g_object_unref (file); |
| } |
| OS.g_object_unref (application); |
| } |
| return result; |
| } |
| |
| /** |
| * 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() { |
| Map<String, List<String>> mimeInfo = gio_getMimeInfo(); |
| if (mimeInfo == null) return new String[0]; |
| /* Create a unique set of the file extensions. */ |
| List<String> extensions = new ArrayList<>(mimeInfo.keySet()); |
| /* Return the list of extensions. */ |
| return extensions.toArray(new String[extensions.size()]); |
| } |
| |
| /** |
| * Launches the operating system executable associated with the file or |
| * URL (http:// or https://). 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 or URL (http:// or https://) |
| * @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) { |
| return launch(Display.getCurrent(), fileName, null); |
| } |
| |
| /** |
| * Launches the operating system executable associated with the file or |
| * URL (http:// or https://). If the file is an executable then the |
| * executable is launched. The program is launched with the specified |
| * working directory only when the <code>workingDir</code> exists and |
| * <code>fileName</code> is an executable. |
| * Note that a <code>Display</code> must already exist to guarantee |
| * that this method returns an appropriate result. |
| * |
| * @param fileName the file name or program name or URL (http:// or https://) |
| * @param workingDir the name of the working directory or null |
| * @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> |
| * |
| * @since 3.6 |
| */ |
| public static boolean launch (String fileName, String workingDir) { |
| return launch(Display.getCurrent(), fileName, workingDir); |
| } |
| |
| /* |
| * API: When support for multiple displays is added, this method will |
| * become public and the original method above can be deprecated. |
| */ |
| static boolean launch (Display display, String fileName, String workingDir) { |
| if (fileName == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| if (workingDir != null && isExecutable(fileName)) { |
| try { |
| Compatibility.exec (new String [] {fileName}, null, workingDir); |
| return true; |
| } catch (IOException e) { |
| return false; |
| } |
| } |
| if (gio_launch (fileName)) return true; |
| int index = fileName.lastIndexOf ('.'); |
| if (index != -1) { |
| String extension = fileName.substring (index); |
| Program program = Program.findProgram (display, extension); |
| if (program != null && program.execute (fileName)) return true; |
| } |
| String lowercaseName = fileName.toLowerCase (); |
| if (lowercaseName.startsWith (PREFIX_HTTP) || lowercaseName.startsWith (PREFIX_HTTPS)) { |
| Program program = Program.findProgram (display, ".html"); //$NON-NLS-1$ |
| if (program == null) { |
| program = Program.findProgram (display, ".htm"); //$NON-NLS-1$ |
| } |
| if (program != null && program.execute (fileName)) return true; |
| } |
| /* If the above launch attempts didn't launch the file, then try with exec().*/ |
| try { |
| Compatibility.exec (new String [] {fileName}, null, workingDir); |
| return true; |
| } catch (IOException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * 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() |
| */ |
| @Override |
| public boolean equals(Object other) { |
| if (this == other) return true; |
| if (!(other instanceof Program)) return false; |
| Program program = (Program)other; |
| return display == program.display && name.equals(program.name) && command.equals(program.command) |
| && gioExpectUri == program.gioExpectUri; |
| } |
| |
| /** |
| * 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); |
| return gio_execute(fileName); |
| } |
| |
| /** |
| * 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; |
| } |
| |
| /** |
| * 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) |
| */ |
| @Override |
| public int hashCode() { |
| return name.hashCode() ^ command.hashCode(); |
| } |
| |
| /** |
| * Returns a string containing a concise, human-readable |
| * description of the receiver. |
| * |
| * @return a string representation of the program |
| */ |
| @Override |
| public String toString() { |
| return "Program {" + name + "}"; |
| } |
| } |