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

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

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/*
 * Copyright 2018-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 com.facebook.buck.core.build.buildable.context.BuildableContext;
import com.facebook.buck.core.build.context.BuildContext;
import com.facebook.buck.core.model.BuildTarget;
import com.facebook.buck.core.model.impl.BuildTargetPaths;
import com.facebook.buck.core.rulekey.AddToRuleKey;
import com.facebook.buck.core.rules.BuildRule;
import com.facebook.buck.core.rules.SourcePathRuleFinder;
import com.facebook.buck.core.rules.common.BuildableSupport;
import com.facebook.buck.core.rules.impl.AbstractBuildRule;
import com.facebook.buck.core.sourcepath.ExplicitBuildTargetSourcePath;
import com.facebook.buck.core.sourcepath.SourcePath;
import com.facebook.buck.core.sourcepath.resolver.SourcePathResolver;
import com.facebook.buck.io.BuildCellRelativePath;
import com.facebook.buck.step.Step;
import com.facebook.buck.step.fs.CopyStep;
import com.facebook.buck.step.fs.MakeCleanDirectoryStep;
import com.facebook.buck.util.MoreSuppliers;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.collect.Ordering;
import java.nio.file.Path;
import java.util.SortedSet;
import java.util.function.Supplier;

/** Rule that collects text files output by ProGuard. */
class ProguardTextOutput extends AbstractBuildRule {
    @AddToRuleKey
    private final SourcePath proguardConfigPath;
    private final Supplier<ImmutableSortedSet<BuildRule>> buildDepsSupplier;

    ProguardTextOutput(BuildTarget buildTarget, NonPreDexedDexBuildable nonPreDexedDexBuildable,
            SourcePathRuleFinder ruleFinder) {
        super(buildTarget, nonPreDexedDexBuildable.getProjectFilesystem());
        this.proguardConfigPath = nonPreDexedDexBuildable.getProguardConfigSourcePath();
        this.buildDepsSupplier = MoreSuppliers.memoize(() -> BuildableSupport.deriveDeps(this, ruleFinder)
                .collect(ImmutableSortedSet.toImmutableSortedSet(Ordering.natural())));
    }

    @Override
    public SortedSet<BuildRule> getBuildDeps() {
        return buildDepsSupplier.get();
    }

    @Override
    public ImmutableList<? extends Step> getBuildSteps(BuildContext buildContext,
            BuildableContext buildableContext) {
        SourcePathResolver resolver = buildContext.getSourcePathResolver();
        Path configPath = resolver.getAbsolutePath(proguardConfigPath);
        ImmutableList.Builder<Step> builder = ImmutableList.builder();
        builder.addAll(MakeCleanDirectoryStep.of(BuildCellRelativePath.fromCellRelativePath(
                buildContext.getBuildCellRootPath(), getProjectFilesystem(), getOutputPath())));
        for (String file : ImmutableList.of("configuration.txt", "mapping.txt")) {
            builder.add(CopyStep.forFile(getProjectFilesystem(), configPath.resolve(file),
                    getOutputPath().resolve(file)));
        }
        buildableContext.recordArtifact(getOutputPath());
        return builder.build();
    }

    private Path getOutputPath() {
        return BuildTargetPaths.getGenPath(getProjectFilesystem(), getBuildTarget(), "%s");
    }

    @Override
    public SourcePath getSourcePathToOutput() {
        return ExplicitBuildTargetSourcePath.of(getBuildTarget(), getOutputPath());
    }
}