com.android.build.gradle.tasks.PreDex.groovy Maven / Gradle / Ivy
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Core library to build Android Gradle plugin.
/*
* Copyright (C) 2012 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.build.gradle.tasks
import com.android.SdkConstants
import com.android.annotations.NonNull
import com.android.build.gradle.internal.tasks.BaseTask
import com.android.builder.core.AndroidBuilder
import com.android.builder.core.DexOptions
import com.android.ide.common.internal.WaitableExecutor
import com.google.common.base.Charsets
import com.google.common.collect.Lists
import com.google.common.collect.Sets
import com.google.common.hash.HashCode
import com.google.common.hash.HashFunction
import com.google.common.hash.Hashing
import com.google.common.io.Files
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.Nested
import org.gradle.api.tasks.OutputDirectory
import org.gradle.api.tasks.ParallelizableTask
import org.gradle.api.tasks.TaskAction
import org.gradle.api.tasks.incremental.IncrementalTaskInputs
import java.util.concurrent.Callable
@ParallelizableTask
public class PreDex extends BaseTask {
// ----- PUBLIC TASK API -----
// ----- PRIVATE TASK API -----
@Input
String getBuildToolsVersion() {
getBuildTools().getRevision()
}
// this is used automatically by Gradle, even though nothing
// in the class uses it.
@SuppressWarnings("GroovyUnusedDeclaration")
@InputFiles
Collection inputFiles
@OutputDirectory
File outputFolder
@Nested
com.android.build.gradle.internal.dsl.DexOptions dexOptions
@Input
boolean multiDex
@TaskAction
void taskAction(IncrementalTaskInputs taskInputs) {
final boolean multiDexEnabled = getMultiDex()
final File outFolder = getOutputFolder()
boolean incremental = taskInputs.isIncremental()
// if we are not in incremental mode, then outOfDate will contain
// all the files, but first we need to delete the previous output
if (!incremental) {
emptyFolder(outFolder)
}
final Set hashs = Sets.newHashSet()
final WaitableExecutor executor = new WaitableExecutor()
final List inputFileDetails = Lists.newArrayList()
taskInputs.outOfDate { final change ->
inputFileDetails.add(change.file)
}
for (final File file : inputFileDetails) {
Callable action = new PreDexTask(outFolder, file, hashs,
multiDexEnabled);
executor.execute(action);
}
if (incremental) {
taskInputs.removed { change ->
//noinspection GroovyAssignabilityCheck
File preDexedFile = getDexFileName(outFolder, change.file)
if (preDexedFile.isDirectory()) {
logger.info("deleteDir(" + preDexedFile + ") returned: " + preDexedFile.deleteDir())
} else {
logger.info("delete(" + preDexedFile + ") returned: " + preDexedFile.delete())
}
}
}
executor.waitForTasksWithQuickFail(false)
}
private final class PreDexTask implements Callable {
private final File outFolder
private final File fileToProcess
private final Set hashs
private final boolean multiDexEnabled
private final DexOptions options = getDexOptions()
private final AndroidBuilder builder = getBuilder()
private PreDexTask(
File outFolder,
File file,
Set hashs,
boolean multiDexEnabled) {
this.outFolder = outFolder
this.fileToProcess = file
this.hashs = hashs
this.multiDexEnabled = multiDexEnabled
}
@Override
Void call() throws Exception {
// TODO remove once we can properly add a library as a dependency of its test.
String hash = getFileHash(fileToProcess)
synchronized (hashs) {
if (hashs.contains(hash)) {
return null
}
hashs.add(hash)
}
//noinspection GroovyAssignabilityCheck
File preDexedFile = getDexFileName(outFolder, fileToProcess)
if (multiDexEnabled) {
preDexedFile.mkdirs()
}
//noinspection GroovyAssignabilityCheck
builder.preDexLibrary(fileToProcess, preDexedFile, multiDexEnabled, options)
return null
}
}
/**
* Returns the hash of a file.
* @param file the file to hash
* @return
*/
private static String getFileHash(@NonNull File file) {
HashCode hashCode = Files.hash(file, Hashing.sha1())
return hashCode.toString()
}
/**
* Returns a unique File for the pre-dexed library, even
* if there are 2 libraries with the same file names (but different
* paths)
*
* If multidex is enabled the return File is actually a folder.
*
* @param outFolder the output folder.
* @param inputFile the library
* @param multidex whether multidex is enabled.
* @return
*/
@NonNull
static File getDexFileName(@NonNull File outFolder, @NonNull File inputFile) {
// get the filename
String name = inputFile.getName()
// remove the extension
int pos = name.lastIndexOf('.')
if (pos != -1) {
name = name.substring(0, pos)
}
// add a hash of the original file path.
String input = inputFile.getAbsolutePath();
HashFunction hashFunction = Hashing.sha1()
HashCode hashCode = hashFunction.hashString(input, Charsets.UTF_16LE)
return new File(outFolder, name + "-" + hashCode.toString() + SdkConstants.DOT_JAR)
}
}