| /* |
| * 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 com.android.textclassifier.logging; |
| // |
| |
| import android.content.Context; |
| |
| import androidx.annotation.Nullable; |
| import androidx.core.util.Preconditions; |
| |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Objects; |
| import java.util.StringJoiner; |
| |
| /** Provide utils to generate and parse the result id. */ |
| public final class ResultIdUtils { |
| private static final String LOG_TAG = "ResultIdUtils"; |
| private static final String CLASSIFIER_ID = "androidtc"; |
| |
| /** Creates a string id that may be used to identify a TextClassifier result. */ |
| public static String createId( |
| Context context, |
| String text, |
| int start, |
| int end, |
| int modelVersion, |
| List<Locale> modelLocales) { |
| Preconditions.checkNotNull(text); |
| Preconditions.checkNotNull(context); |
| Preconditions.checkNotNull(modelLocales); |
| final int hash = Objects.hash(text, start, end, context.getPackageName()); |
| return createId(modelVersion, modelLocales, hash); |
| } |
| |
| /** Creates a string id that may be used to identify a TextClassifier result. */ |
| public static String createId(int modelVersion, List<Locale> modelLocales, int hash) { |
| final StringJoiner localesJoiner = new StringJoiner(","); |
| for (Locale locale : modelLocales) { |
| localesJoiner.add(locale.toLanguageTag()); |
| } |
| final String modelName = |
| String.format(Locale.US, "%s_v%d", localesJoiner.toString(), modelVersion); |
| return String.format(Locale.US, "%s|%s|%d", CLASSIFIER_ID, modelName, hash); |
| } |
| |
| static String getModelName(@Nullable String signature) { |
| if (signature == null) { |
| return ""; |
| } |
| final int start = signature.indexOf("|") + 1; |
| final int end = signature.indexOf("|", start); |
| if (start >= 1 && end >= start) { |
| return signature.substring(start, end); |
| } |
| return ""; |
| } |
| } |