1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.internal.widget.remotecompose.core.operations.utilities; 17 18 import android.annotation.NonNull; 19 import android.annotation.Nullable; 20 21 /** Utility serializer maintaining an indent buffer */ 22 public class StringSerializer { 23 @NonNull StringBuffer mBuffer = new StringBuffer(); 24 25 @NonNull 26 String mIndentBuffer = " "; 27 28 /** 29 * Append some content to the current buffer 30 * 31 * @param indent the indentation level to use 32 * @param content content to append 33 */ append(int indent, @Nullable String content)34 public void append(int indent, @Nullable String content) { 35 String indentation = mIndentBuffer.substring(0, indent); 36 mBuffer.append(indentation); 37 mBuffer.append(indentation); 38 mBuffer.append(content); 39 mBuffer.append("\n"); 40 } 41 42 /** Reset the buffer */ reset()43 public void reset() { 44 mBuffer = new StringBuffer(); 45 } 46 47 /** 48 * Return a string representation of the buffer 49 * 50 * @return string representation 51 */ 52 @NonNull 53 @Override toString()54 public String toString() { 55 return mBuffer.toString(); 56 } 57 } 58