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72d38a6835
Be warned. Do not attemp to change the .js "test" source code in ./js They are meant to check - the outdated 0666 octal constant is still parsed correctly, - the outdated 0666 octal constant raises syntax error flag in strict mode, etc. So leave them alone.
116 lines
4.2 KiB
JavaScript
116 lines
4.2 KiB
JavaScript
// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Downloads",
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"resource://gre/modules/Downloads.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Task",
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"resource://gre/modules/Task.jsm");
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// -----------------------------------------------------------------------
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// HelperApp Launcher Dialog
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//
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// For now on b2g we never prompt and just download to the default
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// location.
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//
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// -----------------------------------------------------------------------
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function HelperAppLauncherDialog() { }
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HelperAppLauncherDialog.prototype = {
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classID: Components.ID("{710322af-e6ae-4b0c-b2c9-1474a87b077e}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIHelperAppLauncherDialog]),
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show: function(aLauncher, aContext, aReason) {
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aLauncher.MIMEInfo.preferredAction = Ci.nsIMIMEInfo.saveToDisk;
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aLauncher.saveToDisk(null, false);
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},
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promptForSaveToFileAsync: function(aLauncher,
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aContext,
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aDefaultFile,
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aSuggestedFileExt,
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aForcePrompt) {
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// Retrieve the user's default download directory.
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Task.spawn(function*() {
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let file = null;
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try {
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let defaultFolder = yield Downloads.getPreferredDownloadsDirectory();
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let dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
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dir.initWithPath(defaultFolder);
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file = this.validateLeafName(dir, aDefaultFile, aSuggestedFileExt);
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} catch(e) { }
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aLauncher.saveDestinationAvailable(file);
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}.bind(this)).then(null, Cu.reportError);
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},
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validateLeafName: function(aLocalFile, aLeafName, aFileExt) {
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if (!(aLocalFile && this.isUsableDirectory(aLocalFile)))
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return null;
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// Remove any leading periods, since we don't want to save hidden files
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// automatically.
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aLeafName = aLeafName.replace(/^\.+/, "");
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if (aLeafName == "")
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aLeafName = "unnamed" + (aFileExt ? "." + aFileExt : "");
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aLocalFile.append(aLeafName);
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this.makeFileUnique(aLocalFile);
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return aLocalFile;
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},
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makeFileUnique: function(aLocalFile) {
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try {
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// Note - this code is identical to that in
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// toolkit/content/contentAreaUtils.js.
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// If you are updating this code, update that code too! We can't share code
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// here since this is called in a js component.
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let collisionCount = 0;
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while (aLocalFile.exists()) {
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collisionCount++;
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if (collisionCount == 1) {
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// Append "(2)" before the last dot in (or at the end of) the filename
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// special case .ext.gz etc files so we don't wind up with .tar(2).gz
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if (aLocalFile.leafName.match(/\.[^\.]{1,3}\.(gz|bz2|Z)$/i))
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aLocalFile.leafName = aLocalFile.leafName.replace(/\.[^\.]{1,3}\.(gz|bz2|Z)$/i, "(2)$&");
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else
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aLocalFile.leafName = aLocalFile.leafName.replace(/(\.[^\.]*)?$/, "(2)$&");
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}
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else {
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// replace the last (n) in the filename with (n+1)
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aLocalFile.leafName = aLocalFile.leafName.replace(/^(.*\()\d+\)/, "$1" + (collisionCount+1) + ")");
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}
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}
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aLocalFile.create(Ci.nsIFile.NORMAL_FILE_TYPE, 0o600);
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}
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catch (e) {
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dump("*** exception in makeFileUnique: " + e + "\n");
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if (e.result == Cr.NS_ERROR_FILE_ACCESS_DENIED)
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throw e;
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if (aLocalFile.leafName == "" || aLocalFile.isDirectory()) {
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aLocalFile.append("unnamed");
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if (aLocalFile.exists())
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aLocalFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0o600);
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}
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}
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},
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isUsableDirectory: function(aDirectory) {
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return aDirectory.exists() &&
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aDirectory.isDirectory() &&
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aDirectory.isWritable();
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},
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([HelperAppLauncherDialog]);
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