| /* |
| * Copyright 2017 The Android Open Source Project |
| * |
| * 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 android.hardware.usb; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.IOException; |
| import java.util.Objects; |
| |
| /** |
| * This class is used to describe a USB accessory. |
| * When used in HashMaps all values must be specified, |
| * but wildcards can be used for any of the fields in |
| * the package meta-data. |
| * |
| * @hide |
| */ |
| public class AccessoryFilter { |
| // USB accessory manufacturer (or null for unspecified) |
| public final String mManufacturer; |
| // USB accessory model (or null for unspecified) |
| public final String mModel; |
| // USB accessory version (or null for unspecified) |
| public final String mVersion; |
| |
| public AccessoryFilter(String manufacturer, String model, String version) { |
| mManufacturer = manufacturer; |
| mModel = model; |
| mVersion = version; |
| } |
| |
| public AccessoryFilter(UsbAccessory accessory) { |
| mManufacturer = accessory.getManufacturer(); |
| mModel = accessory.getModel(); |
| mVersion = accessory.getVersion(); |
| } |
| |
| public static AccessoryFilter read(XmlPullParser parser) |
| throws XmlPullParserException, IOException { |
| String manufacturer = null; |
| String model = null; |
| String version = null; |
| |
| int count = parser.getAttributeCount(); |
| for (int i = 0; i < count; i++) { |
| String name = parser.getAttributeName(i); |
| String value = parser.getAttributeValue(i); |
| |
| if ("manufacturer".equals(name)) { |
| manufacturer = value; |
| } else if ("model".equals(name)) { |
| model = value; |
| } else if ("version".equals(name)) { |
| version = value; |
| } |
| } |
| return new AccessoryFilter(manufacturer, model, version); |
| } |
| |
| public void write(XmlSerializer serializer)throws IOException { |
| serializer.startTag(null, "usb-accessory"); |
| if (mManufacturer != null) { |
| serializer.attribute(null, "manufacturer", mManufacturer); |
| } |
| if (mModel != null) { |
| serializer.attribute(null, "model", mModel); |
| } |
| if (mVersion != null) { |
| serializer.attribute(null, "version", mVersion); |
| } |
| serializer.endTag(null, "usb-accessory"); |
| } |
| |
| public boolean matches(UsbAccessory acc) { |
| if (mManufacturer != null && !acc.getManufacturer().equals(mManufacturer)) return false; |
| if (mModel != null && !acc.getModel().equals(mModel)) return false; |
| return !(mVersion != null && !acc.getVersion().equals(mVersion)); |
| } |
| |
| /** |
| * Is the accessories described {@code accessory} covered by this filter? |
| * |
| * @param accessory A filter describing the accessory |
| * |
| * @return {@code true} iff this the filter covers the accessory |
| */ |
| public boolean contains(AccessoryFilter accessory) { |
| if (mManufacturer != null && !Objects.equals(accessory.mManufacturer, mManufacturer)) { |
| return false; |
| } |
| if (mModel != null && !Objects.equals(accessory.mModel, mModel)) return false; |
| return !(mVersion != null && !Objects.equals(accessory.mVersion, mVersion)); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| // can't compare if we have wildcard strings |
| if (mManufacturer == null || mModel == null || mVersion == null) { |
| return false; |
| } |
| if (obj instanceof AccessoryFilter) { |
| AccessoryFilter filter = (AccessoryFilter)obj; |
| return (mManufacturer.equals(filter.mManufacturer) && |
| mModel.equals(filter.mModel) && |
| mVersion.equals(filter.mVersion)); |
| } |
| if (obj instanceof UsbAccessory) { |
| UsbAccessory accessory = (UsbAccessory)obj; |
| return (mManufacturer.equals(accessory.getManufacturer()) && |
| mModel.equals(accessory.getModel()) && |
| mVersion.equals(accessory.getVersion())); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return ((mManufacturer == null ? 0 : mManufacturer.hashCode()) ^ |
| (mModel == null ? 0 : mModel.hashCode()) ^ |
| (mVersion == null ? 0 : mVersion.hashCode())); |
| } |
| |
| @Override |
| public String toString() { |
| return "AccessoryFilter[mManufacturer=\"" + mManufacturer + |
| "\", mModel=\"" + mModel + |
| "\", mVersion=\"" + mVersion + "\"]"; |
| } |
| } |