| /* |
| * Copyright (C) 2016 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.google.android.exoplayer2.testutil; |
| |
| import androidx.annotation.Nullable; |
| import com.google.android.exoplayer2.C; |
| import java.util.Arrays; |
| import java.util.Locale; |
| |
| /** |
| * Helper utility to dump field values. |
| */ |
| public final class Dumper { |
| |
| /** |
| * Provides custom dump method. |
| */ |
| public interface Dumpable { |
| /** |
| * Dumps the fields of the object using the {@code dumper}. |
| * @param dumper The {@link Dumper} to be used to dump fields. |
| */ |
| void dump(Dumper dumper); |
| } |
| |
| private static final int INDENT_SIZE_IN_SPACES = 2; |
| |
| private final StringBuilder sb; |
| private int indent; |
| |
| public Dumper() { |
| sb = new StringBuilder(); |
| } |
| |
| public Dumper add(String field, @Nullable Object value) { |
| return addString(field + " = " + value + '\n'); |
| } |
| |
| public Dumper add(Dumpable object) { |
| object.dump(this); |
| return this; |
| } |
| |
| public Dumper add(String field, @Nullable byte[] value) { |
| String string = |
| String.format( |
| Locale.US, |
| "%s = length %d, hash %X\n", |
| field, |
| value == null ? 0 : value.length, |
| Arrays.hashCode(value)); |
| return addString(string); |
| } |
| |
| public Dumper addTime(String field, long time) { |
| return add(field, time == C.TIME_UNSET ? "UNSET TIME" : time); |
| } |
| |
| public Dumper startBlock(String name) { |
| addString(name + ":\n"); |
| indent += INDENT_SIZE_IN_SPACES; |
| return this; |
| } |
| |
| public Dumper endBlock() { |
| indent -= INDENT_SIZE_IN_SPACES; |
| return this; |
| } |
| |
| @Override |
| public String toString() { |
| return sb.toString(); |
| } |
| |
| private Dumper addString(String string) { |
| for (int i = 0; i < indent; i++) { |
| sb.append(' '); |
| } |
| sb.append(string); |
| return this; |
| } |
| |
| } |