| /* |
| * Copyright (C) 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 com.android.server.usb.descriptors.report; |
| |
| import android.hardware.usb.UsbDeviceConnection; |
| |
| /** |
| * @hide |
| * A concrete implementation of ReportCanvas class which generates "Plain Text" output. |
| */ |
| public final class TextReportCanvas extends ReportCanvas { |
| private static final String TAG = "TextReportCanvas"; |
| |
| private final StringBuilder mStringBuilder; |
| private int mListIndent; |
| private static final int LIST_INDENT_AMNT = 2; |
| |
| /** |
| * Constructor. Connects plain-text output to the provided StringBuilder. |
| * @param connection The USB connection object used to retrieve strings |
| * from the USB device. |
| * @param stringBuilder Generated output gets written into this object. |
| */ |
| public TextReportCanvas(UsbDeviceConnection connection, StringBuilder stringBuilder) { |
| super(connection); |
| |
| mStringBuilder = stringBuilder; |
| } |
| |
| private void writeListIndent() { |
| for (int space = 0; space < mListIndent; space++) { |
| mStringBuilder.append(" "); |
| } |
| } |
| |
| @Override |
| public void write(String text) { |
| mStringBuilder.append(text); |
| } |
| |
| @Override |
| public void openHeader(int level) { |
| writeListIndent(); |
| mStringBuilder.append("["); |
| } |
| |
| @Override |
| public void closeHeader(int level) { |
| mStringBuilder.append("]\n"); |
| } |
| |
| @Override |
| public void openParagraph(boolean emphasis) { |
| writeListIndent(); |
| } |
| |
| @Override |
| public void closeParagraph() { |
| mStringBuilder.append("\n"); |
| } |
| |
| @Override |
| public void writeParagraph(String text, boolean inRed) { |
| openParagraph(inRed); |
| if (inRed) { |
| mStringBuilder.append("*" + text + "*"); |
| } else { |
| mStringBuilder.append(text); |
| } |
| closeParagraph(); |
| } |
| |
| @Override |
| public void openList() { |
| mListIndent += LIST_INDENT_AMNT; |
| } |
| |
| @Override |
| public void closeList() { |
| mListIndent -= LIST_INDENT_AMNT; |
| } |
| |
| @Override |
| public void openListItem() { |
| writeListIndent(); |
| mStringBuilder.append("- "); |
| } |
| |
| @Override |
| public void closeListItem() { |
| mStringBuilder.append("\n"); |
| } |
| } |