com.facebook.buck.android.AndroidNdkHelper.java Source code

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Here is the source code for com.facebook.buck.android.AndroidNdkHelper.java

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/*
 * Copyright 2013-present Facebook, Inc.
 *
 * 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.facebook.buck.android;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import com.facebook.buck.android.relinker.Symbols;
import com.facebook.buck.cxx.CxxPlatformUtils;
import com.facebook.buck.io.ProjectFilesystem;
import com.facebook.buck.rules.SourcePathResolver;
import com.facebook.buck.rules.Tool;
import com.facebook.buck.testutil.integration.ProjectWorkspace;
import com.facebook.buck.testutil.integration.ZipInspector;
import com.facebook.buck.util.ProcessExecutor;
import com.facebook.buck.util.environment.Platform;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.Optional;
import java.util.zip.ZipFile;

public class AndroidNdkHelper {

    private AndroidNdkHelper() {
    }

    public static NdkCxxPlatform getNdkCxxPlatform(ProjectWorkspace workspace, ProjectFilesystem filesystem)
            throws IOException, InterruptedException {
        // TODO(cjhopman): is this really the simplest way to get the objdump tool?
        AndroidDirectoryResolver androidResolver = new DefaultAndroidDirectoryResolver(
                workspace.asCell().getRoot().getFileSystem(), ImmutableMap.copyOf(System.getenv()),
                Optional.empty(), Optional.empty());

        Optional<Path> ndkPath = androidResolver.getNdkOrAbsent();
        assertTrue(ndkPath.isPresent());
        Optional<String> ndkVersion = DefaultAndroidDirectoryResolver.findNdkVersionFromDirectory(ndkPath.get());
        String gccVersion = NdkCxxPlatforms.getDefaultGccVersionForNdk(ndkVersion);

        ImmutableCollection<NdkCxxPlatform> platforms = NdkCxxPlatforms
                .getPlatforms(CxxPlatformUtils.DEFAULT_CONFIG, filesystem, ndkPath.get(),
                        NdkCxxPlatformCompiler.builder().setType(NdkCxxPlatforms.DEFAULT_COMPILER_TYPE)
                                .setVersion(gccVersion).setGccVersion(gccVersion).build(),
                        NdkCxxPlatforms.DEFAULT_CXX_RUNTIME, NdkCxxPlatforms.DEFAULT_TARGET_APP_PLATFORM,
                        NdkCxxPlatforms.DEFAULT_CPU_ABIS, Platform.detect())
                .values();
        assertFalse(platforms.isEmpty());
        return platforms.iterator().next();
    }

    private static Path unzip(Path tmpDir, Path zipPath, String name) throws IOException {
        Path outPath = tmpDir.resolve(zipPath.getFileName());
        try (ZipFile zipFile = new ZipFile(zipPath.toFile())) {
            Files.copy(zipFile.getInputStream(zipFile.getEntry(name)), outPath,
                    StandardCopyOption.REPLACE_EXISTING);
            return outPath;
        }
    }

    public static class SymbolGetter {
        private final ProcessExecutor executor;
        private final Path tmpDir;
        private final Tool objdump;
        private final SourcePathResolver resolver;

        public SymbolGetter(ProcessExecutor executor, Path tmpDir, Tool objdump, SourcePathResolver resolver) {
            this.executor = executor;
            this.tmpDir = tmpDir;
            this.objdump = objdump;
            this.resolver = resolver;
        }

        private Path unpack(Path apkPath, String libName) throws IOException {
            new ZipInspector(apkPath).assertFileExists(libName);
            return unzip(tmpDir, apkPath, libName);
        }

        public Symbols getSymbols(Path apkPath, String libName) throws IOException, InterruptedException {
            Path lib = unpack(apkPath, libName);
            return Symbols.getSymbols(executor, objdump, resolver, lib);
        }

        public SymbolsAndDtNeeded getSymbolsAndDtNeeded(Path apkPath, String libName)
                throws IOException, InterruptedException {
            Path lib = unpack(apkPath, libName);
            Symbols symbols = Symbols.getSymbols(executor, objdump, resolver, lib);
            ImmutableSet<String> dtNeeded = Symbols.getDtNeeded(executor, objdump, resolver, lib);
            return new SymbolsAndDtNeeded(symbols, dtNeeded);
        }
    }

    public static class SymbolsAndDtNeeded {
        public final Symbols symbols;
        public final ImmutableSet<String> dtNeeded;

        private SymbolsAndDtNeeded(Symbols symbols, ImmutableSet<String> dtNeeded) {
            this.symbols = symbols;
            this.dtNeeded = dtNeeded;
        }
    }
}