| // Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.desugar.desugaredlibrary.jdk11; |
| |
| import static com.android.tools.r8.ToolHelper.DexVm.Version.V12_0_0; |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification.DEFAULT_SPECIFICATIONS; |
| import static com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification.JDK11_PATH; |
| |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.ToolHelper.DexVm.Version; |
| import com.android.tools.r8.desugar.desugaredlibrary.DesugaredLibraryTestBase; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification; |
| import com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.google.common.collect.ImmutableList; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.spi.FileTypeDetector; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.ServiceLoader; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class FileTypeDetectorTest extends DesugaredLibraryTestBase { |
| |
| private static final String EXPECTED_RESULT_DEFAULT_PNG_TYPE_DETECTOR = |
| StringUtils.lines("false", "text/plain", "image/png", "null", "image/png"); |
| private static final String EXPECTED_RESULT_NO_DEFAULT_PNG_TYPE_DETECTOR = |
| StringUtils.lines("false", "text/plain", "null", "null", "image/png"); |
| |
| private final TestParameters parameters; |
| private final LibraryDesugaringSpecification libraryDesugaringSpecification; |
| private final CompilationSpecification compilationSpecification; |
| |
| @Parameters(name = "{0}, spec: {1}, {2}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| // Skip Android 4.4.4 due to missing libjavacrypto. |
| getTestParameters() |
| .withDexRuntime(Version.V4_0_4) |
| .withDexRuntimesStartingFromIncluding(Version.V5_1_1) |
| .withAllApiLevels() |
| .build(), |
| ImmutableList.of(JDK11_PATH), |
| DEFAULT_SPECIFICATIONS); |
| } |
| |
| public FileTypeDetectorTest( |
| TestParameters parameters, |
| LibraryDesugaringSpecification libraryDesugaringSpecification, |
| CompilationSpecification compilationSpecification) { |
| this.parameters = parameters; |
| this.libraryDesugaringSpecification = libraryDesugaringSpecification; |
| this.compilationSpecification = compilationSpecification; |
| } |
| |
| private boolean hasDefaultPNGTypeDetector() { |
| return parameters.getDexRuntimeVersion().compareTo(V12_0_0) < 0; |
| } |
| |
| private String getExpectedResult() { |
| return hasDefaultPNGTypeDetector() |
| ? EXPECTED_RESULT_DEFAULT_PNG_TYPE_DETECTOR |
| : EXPECTED_RESULT_NO_DEFAULT_PNG_TYPE_DETECTOR; |
| } |
| |
| @Test |
| public void test() throws Throwable { |
| testForDesugaredLibrary(parameters, libraryDesugaringSpecification, compilationSpecification) |
| .addInnerClasses(getClass()) |
| .addProgramClasses(GoogleIcon.class) |
| .addKeepMainRule(TestClass.class) |
| .compile() |
| .withArt6Plus64BitsLib() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(getExpectedResult()); |
| } |
| |
| public static class TestClass { |
| |
| public static void main(String[] args) throws Throwable { |
| // FileTypeDetector usage through ServiceLoader. |
| ServiceLoader<FileTypeDetector> serviceLoader = ServiceLoader.load(FileTypeDetector.class); |
| Iterator<FileTypeDetector> iterator = serviceLoader.iterator(); |
| System.out.println(iterator.hasNext()); |
| while (iterator.hasNext()) { |
| FileTypeDetector fileTypeDetector = iterator.next(); |
| System.out.println((fileTypeDetector == null)); |
| } |
| |
| Path emptyText = Files.createTempFile("example", ".txt"); |
| Path png = getGoogleIconPng(); |
| |
| // FileTypeDetector usage through Files. |
| System.out.println(Files.probeContentType(emptyText)); |
| System.out.println(Files.probeContentType(png)); |
| |
| // Custom file type detector usage. |
| FileTypeDetector fileTypeDetector = new PngFileTypeDetector(); |
| System.out.println(fileTypeDetector.probeContentType(emptyText)); |
| System.out.println(fileTypeDetector.probeContentType(png)); |
| } |
| |
| private static Path getGoogleIconPng() throws IOException { |
| Path picture = Files.createTempFile("art", ".png"); |
| Files.write(picture, GoogleIcon.GOOGLE_ICON_PNG); |
| return picture; |
| } |
| } |
| |
| public static class PngFileTypeDetector extends FileTypeDetector { |
| |
| private static final byte[] PNG_HEADER = { |
| (byte) 0x89, |
| (byte) 0x50, |
| (byte) 0x4E, |
| (byte) 0x47, |
| (byte) 0x0D, |
| (byte) 0x0A, |
| (byte) 0x1A, |
| (byte) 0x0A |
| }; |
| |
| private static final int PNG_HEADER_SIZE = PNG_HEADER.length; |
| |
| @Override |
| public String probeContentType(final Path path) throws IOException { |
| final byte[] buf = new byte[PNG_HEADER_SIZE]; |
| |
| try (final InputStream in = Files.newInputStream(path); ) { |
| if (in.read(buf) != PNG_HEADER_SIZE) { |
| return null; |
| } |
| } |
| |
| return Arrays.equals(buf, PNG_HEADER) ? "image/png" : null; |
| } |
| } |
| } |