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Diffstat (limited to 'taskerlocaleapi/src/main/java/com/twofortyfouram/locale/PackageUtilities.java')
| -rw-r--r-- | taskerlocaleapi/src/main/java/com/twofortyfouram/locale/PackageUtilities.java | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/taskerlocaleapi/src/main/java/com/twofortyfouram/locale/PackageUtilities.java b/taskerlocaleapi/src/main/java/com/twofortyfouram/locale/PackageUtilities.java deleted file mode 100644 index a4b623ce..00000000 --- a/taskerlocaleapi/src/main/java/com/twofortyfouram/locale/PackageUtilities.java +++ /dev/null @@ -1,123 +0,0 @@ -/* - * Copyright 2013 two forty four a.m. LLC <http://www.twofortyfouram.com> - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in - * compliance with the License. You may obtain a copy of the License at - * <http://www.apache.org/licenses/LICENSE-2.0> - * - * Unless required by applicable law or agreed to in writing, software distributed under the License is - * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and limitations under the License. - */ - -package com.twofortyfouram.locale; - -import android.content.pm.PackageInfo; -import android.content.pm.PackageManager; - -import java.util.Collections; -import java.util.HashSet; -import java.util.List; -import java.util.Set; - -/** - * A simple utility class to find a package that is compatible with hosting the Locale Developer Platform. - */ -/* - * This class is NOT part of the public Locale Developer Platform API - */ -public final class PackageUtilities -{ - /** - * A hard-coded set of Android packages that support the Locale Developer Platform. - */ - /* - * This is NOT a public field and is subject to change in future releases of the Developer Platform. A - * conscious design decision was made to use hard-coded package names, rather than dynamic discovery of - * packages that might be compatible with hosting the Locale Developer Platform API. This is for two - * reasons: to ensure the host is implemented correctly (hosts must pass the extensive Locale Platform - * Host compatibility test suite) and to prevent malicious applications from crashing plug-ins by - * providing bad values. As additional apps implement the Locale Developer Platform, their package names - * will also be added to this list. - */ - /* - * Note: this is implemented as a Set<String> rather than a String[], in order to enforce immutability. - */ - private static final Set<String> COMPATIBLE_PACKAGES = constructPackageSet(); - - /** - * @return a list wrapped in {@link Collections#unmodifiableList(List)} that represents the set of - * Locale-compatible packages. - */ - private static Set<String> constructPackageSet() - { - final HashSet<String> packages = new HashSet<String>(); - - packages.add(Constants.LOCALE_PACKAGE); - - /* - * Note: Tasker is not 100% compatible with Locale's plug-in API, but it is close enough that these - * packages are enabled. Tasker's known incompatibilities are documented on the Tasker website. - */ - packages.add("net.dinglisch.android.taskerm"); //$NON-NLS-1$ - packages.add("net.dinglisch.android.tasker"); //$NON-NLS-1$ - packages.add("net.dinglisch.android.taskercupcake"); //$NON-NLS-1$ - - return Collections.unmodifiableSet(packages); - } - - /** - * Obtains the {@code String} package name of a currently-installed package which implements the host - * component of the Locale Developer Platform. - * <p> - * Note: A TOCTOU error exists, due to the fact that the package could be uninstalled at any time. - * <p> - * Note: If there are multiple hosts, this method will return one of them. The interface of this method - * makes no guarantee which host will returned, nor whether that host will be consistently returned. - * - * @param manager an instance of {@code PackageManager}. Cannot be null. - * @param packageHint hint as to which package should take precedence. This parameter may be null. - * @return {@code String} package name of a host for the Locale Developer Platform, such as - * "com.twofortyfouram.locale". If no such package is found, returns null. - */ - public static String getCompatiblePackage(final PackageManager manager, final String packageHint) - { - /* - * The interface for this method makes no guarantees as to which host will be returned. However the - * implementation is more predictable. - */ - - final List<PackageInfo> installedPackages = manager.getInstalledPackages(0); - - if (COMPATIBLE_PACKAGES.contains(packageHint)) - { - for (final PackageInfo packageInfo : installedPackages) - { - final String temp = packageInfo.packageName; - if (packageHint.equals(temp)) - { - return temp; - } - } - } - - for (final String compatiblePackageName : COMPATIBLE_PACKAGES) - { - if (compatiblePackageName.equals(packageHint)) - { - continue; - } - - for (final PackageInfo packageInfo : installedPackages) - { - final String temp = packageInfo.packageName; - if (compatiblePackageName.equals(temp)) - { - return temp; - } - } - } - - return null; - } -}
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