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/*
* Copyright (C) 2019 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.app.timezonedetector;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.ShellCommand;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
/**
* A time zone suggestion from a manual (user provided) source.
*
* <p>{@code zoneId} contains the suggested time zone ID, e.g. "America/Los_Angeles".
*
* <p>{@code debugInfo} contains debugging metadata associated with the suggestion. This is used to
* record why the suggestion exists and how it was entered. This information exists only to aid in
* debugging and therefore is used by {@link #toString()}, but it is not for use in detection logic
* and is not considered in {@link #hashCode()} or {@link #equals(Object)}.
*
* @hide
*/
public final class ManualTimeZoneSuggestion implements Parcelable {
public static final @NonNull Creator<ManualTimeZoneSuggestion> CREATOR =
new Creator<ManualTimeZoneSuggestion>() {
public ManualTimeZoneSuggestion createFromParcel(Parcel in) {
return ManualTimeZoneSuggestion.createFromParcel(in);
}
public ManualTimeZoneSuggestion[] newArray(int size) {
return new ManualTimeZoneSuggestion[size];
}
};
@NonNull private final String mZoneId;
@Nullable private ArrayList<String> mDebugInfo;
public ManualTimeZoneSuggestion(@NonNull String zoneId) {
mZoneId = Objects.requireNonNull(zoneId);
}
private static ManualTimeZoneSuggestion createFromParcel(Parcel in) {
String zoneId = in.readString();
ManualTimeZoneSuggestion suggestion = new ManualTimeZoneSuggestion(zoneId);
@SuppressWarnings("unchecked")
ArrayList<String> debugInfo = (ArrayList<String>) in.readArrayList(null /* classLoader */, java.lang.String.class);
suggestion.mDebugInfo = debugInfo;
return suggestion;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(@NonNull Parcel dest, int flags) {
dest.writeString(mZoneId);
dest.writeList(mDebugInfo);
}
@NonNull
public String getZoneId() {
return mZoneId;
}
@NonNull
public List<String> getDebugInfo() {
return mDebugInfo == null
? Collections.emptyList() : Collections.unmodifiableList(mDebugInfo);
}
/**
* Associates information with the instance that can be useful for debugging / logging. The
* information is present in {@link #toString()} but is not considered for
* {@link #equals(Object)} and {@link #hashCode()}.
*/
public void addDebugInfo(String... debugInfos) {
if (mDebugInfo == null) {
mDebugInfo = new ArrayList<>();
}
mDebugInfo.addAll(Arrays.asList(debugInfos));
}
@Override
public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ManualTimeZoneSuggestion
that = (ManualTimeZoneSuggestion) o;
return Objects.equals(mZoneId, that.mZoneId);
}
@Override
public int hashCode() {
return Objects.hash(mZoneId);
}
@Override
public String toString() {
return "ManualTimeZoneSuggestion{"
+ "mZoneId=" + mZoneId
+ ", mDebugInfo=" + mDebugInfo
+ '}';
}
/** @hide */
public static ManualTimeZoneSuggestion parseCommandLineArg(@NonNull ShellCommand cmd) {
String zoneId = null;
String opt;
while ((opt = cmd.getNextArg()) != null) {
switch (opt) {
case "--zone_id": {
zoneId = cmd.getNextArgRequired();
break;
}
default: {
throw new IllegalArgumentException("Unknown option: " + opt);
}
}
}
ManualTimeZoneSuggestion suggestion = new ManualTimeZoneSuggestion(zoneId);
suggestion.addDebugInfo("Command line injection");
return suggestion;
}
/** @hide */
public static void printCommandLineOpts(@NonNull PrintWriter pw) {
pw.println("Manual suggestion options:");
pw.println(" --zone_id <Olson ID>");
pw.println();
pw.println("See " + ManualTimeZoneSuggestion.class.getName() + " for more information");
}
}
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