| /* |
| * 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.launcher3.util; |
| |
| import android.graphics.Bitmap; |
| import android.os.FileUtils; |
| import android.util.Base64; |
| import android.util.Log; |
| |
| import com.android.launcher3.Utilities; |
| import com.android.launcher3.config.FeatureFlags; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.Closeable; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| /** |
| * Supports various IO utility functions |
| */ |
| public class IOUtils { |
| |
| private static final int BUF_SIZE = 0x1000; // 4K |
| private static final String TAG = "IOUtils"; |
| |
| public static byte[] toByteArray(File file) throws IOException { |
| try (InputStream in = new FileInputStream(file)) { |
| return toByteArray(in); |
| } |
| } |
| |
| public static byte[] toByteArray(InputStream in) throws IOException { |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| copy(in, out); |
| return out.toByteArray(); |
| } |
| |
| public static String toBase64String(Bitmap bitmap) { |
| ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream); |
| return Base64.encodeToString(outputStream.toByteArray(), Base64.DEFAULT); |
| } |
| |
| public static long copy(InputStream from, OutputStream to) throws IOException { |
| if (Utilities.ATLEAST_Q) { |
| return FileUtils.copy(from, to); |
| } |
| byte[] buf = new byte[BUF_SIZE]; |
| long total = 0; |
| int r; |
| while ((r = from.read(buf)) != -1) { |
| to.write(buf, 0, r); |
| total += r; |
| } |
| return total; |
| } |
| |
| public static void closeSilently(Closeable c) { |
| if (c != null) { |
| try { |
| c.close(); |
| } catch (IOException e) { |
| if (FeatureFlags.IS_STUDIO_BUILD) { |
| Log.d(TAG, "Error closing", e); |
| } |
| } |
| } |
| } |
| } |