macOS: Create alias of maintenance tool to Applications directory

This makes maintenance tool startable from Launchpad and Spotlight
search. Add "MaintenanceToolAlias" configuration variable for
setting the name of the alias, which may differ from the actual
file name in installation directory.

Task-number: QTIFW-2535
Task-number: QTIFW-2478
Change-Id: I73ae5bbf5d0196b2512b5517cb02c391b2ab278c
Reviewed-by: Katja Marttila <katja.marttila@qt.io>

1 files changed, 75 insertions, 0 deletions

diff --git a/src/libs/installer/fileutils_mac.mm b/src/libs/installer/fileutils_mac.mm
new file mode 100644
index 000000000..d3792d510
--- /dev/null
+++ b/src/libs/installer/fileutils_mac.mm
@@ -0,0 +1,75 @@
+/**************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#include "fileutils.h"
+
+#include "errors.h"
+
+#include <QCoreApplication>
+
+#include <objc/objc.h>
+#include <Foundation/NSURL.h>
+#include <Foundation/NSError.h>>
+
+namespace QInstaller {
+
+/*!
+    \internal
+
+    Creates a bookmark variant of Finder alias from target \a path to \a alias.
+    Throws \c Error on failure.
+*/
+void mkalias(const QString &path, const QString &alias)
+{
+    NSURL *targetUrl = [NSURL fileURLWithPath:path.toNSString()];
+    NSURL *aliasUrl = [NSURL fileURLWithPath:alias.toNSString()];
+
+    NSError *error = nil;
+    NSData *data = [targetUrl bookmarkDataWithOptions:NSURLBookmarkCreationSuitableForBookmarkFile
+        includingResourceValuesForKeys:nil relativeToURL:nil error:&error];
+
+    if (data != nil) {
+        BOOL success = [NSURL writeBookmarkData:data toURL:aliasUrl
+            options:NSURLBookmarkCreationSuitableForBookmarkFile error:&error];
+        if (success == NO) {
+            throw Error(QCoreApplication::translate("QInstaller",
+                "Cannot create alias from \"%1\" to \"%2\": %3.")
+                    .arg(path, alias, QString::fromNSString(error.localizedDescription))
+            );
+        }
+    } else {
+        throw Error(QCoreApplication::translate("QInstaller",
+            "Could not get bookmark from URL \"%1\": %2.").arg(
+                QString::fromNSString(targetUrl.absoluteString),
+                QString::fromNSString(error.localizedDescription)
+            )
+        );
+    }
+}
+
+} // namespace QInstaller