com.google.devtools.build.lib.rules.android.ManifestMergerActionBuilder.java Source code

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Here is the source code for com.google.devtools.build.lib.rules.android.ManifestMergerActionBuilder.java

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// Copyright 2016 The Bazel Authors. All rights reserved.
//
// 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.google.devtools.build.lib.rules.android;

import com.google.common.base.Function;
import com.google.common.base.Functions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.actions.ActionConstructionContext;
import com.google.devtools.build.lib.analysis.actions.CustomCommandLine;
import com.google.devtools.build.lib.analysis.actions.SpawnAction;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;

import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

/**
 * Builder for creating manifest merger actions.
 */
public class ManifestMergerActionBuilder {
    private final RuleContext ruleContext;
    private final SpawnAction.Builder spawnActionBuilder;

    private Artifact manifest;
    private Map<Artifact, Label> mergeeManifests;
    private boolean isLibrary;
    private Map<String, String> manifestValues;
    private String customPackage;
    private Artifact manifestOutput;
    private Artifact logOut;

    public ManifestMergerActionBuilder(RuleContext ruleContext) {
        this.ruleContext = ruleContext;
        this.spawnActionBuilder = new SpawnAction.Builder();
    }

    public ManifestMergerActionBuilder setManifest(Artifact manifest) {
        this.manifest = manifest;
        return this;
    }

    public ManifestMergerActionBuilder setMergeeManifests(Map<Artifact, Label> mergeeManifests) {
        this.mergeeManifests = ImmutableMap.copyOf(mergeeManifests);
        return this;
    }

    public ManifestMergerActionBuilder setLibrary(boolean isLibrary) {
        this.isLibrary = isLibrary;
        return this;
    }

    public ManifestMergerActionBuilder setManifestValues(Map<String, String> manifestValues) {
        this.manifestValues = manifestValues;
        return this;
    }

    public ManifestMergerActionBuilder setCustomPackage(String customPackage) {
        this.customPackage = customPackage;
        return this;
    }

    public ManifestMergerActionBuilder setManifestOutput(Artifact manifestOutput) {
        this.manifestOutput = manifestOutput;
        return this;
    }

    public ManifestMergerActionBuilder setLogOut(Artifact logOut) {
        this.logOut = logOut;
        return this;
    }

    public void build(ActionConstructionContext context) {
        NestedSetBuilder<Artifact> inputs = NestedSetBuilder.naiveLinkOrder();
        ImmutableList.Builder<Artifact> outputs = ImmutableList.builder();
        CustomCommandLine.Builder builder = new CustomCommandLine.Builder();

        inputs.addAll(ruleContext.getExecutablePrerequisite("$android_manifest_merger", Mode.HOST)
                .getRunfilesSupport().getRunfilesArtifactsWithoutMiddlemen());

        builder.addExecPath("--manifest", manifest);
        inputs.add(manifest);

        if (mergeeManifests != null && !mergeeManifests.isEmpty()) {
            builder.add("--mergeeManifests")
                    .add(mapToDictionaryString(mergeeManifests, new Function<Artifact, String>() {
                        @Override
                        public String apply(Artifact input) {
                            return input.getExecPathString();
                        }
                    }, null /* valueConverter */));
            inputs.addAll(mergeeManifests.keySet());
        }

        if (isLibrary) {
            builder.add("--mergeType").add("LIBRARY");
        }

        if (manifestValues != null && !manifestValues.isEmpty()) {
            builder.add("--manifestValues").add(mapToDictionaryString(manifestValues));
        }

        if (customPackage != null && !customPackage.isEmpty()) {
            builder.add("--customPackage").add(customPackage);
        }

        builder.addExecPath("--manifestOutput", manifestOutput);
        outputs.add(manifestOutput);

        if (logOut != null) {
            builder.addExecPath("--log", logOut);
            outputs.add(logOut);
        }

        ruleContext.registerAction(this.spawnActionBuilder.addTransitiveInputs(inputs.build())
                .addOutputs(outputs.build()).setCommandLine(builder.build())
                .setExecutable(ruleContext.getExecutablePrerequisite("$android_manifest_merger", Mode.HOST))
                .setProgressMessage("Merging manifest for " + ruleContext.getLabel()).setMnemonic("ManifestMerger")
                .build(context));
    }

    private static final Function<String, String> ESCAPER = new Function<String, String>() {
        @Override
        public String apply(String value) {
            return value.replace(":", "\\:").replace(",", "\\,");
        }
    };

    private <K, V> String mapToDictionaryString(Map<K, V> map) {
        return mapToDictionaryString(map, Functions.toStringFunction(), Functions.toStringFunction());
    }

    private <K, V> String mapToDictionaryString(Map<K, V> map, Function<? super K, String> keyConverter,
            Function<? super V, String> valueConverter) {
        if (keyConverter == null) {
            keyConverter = Functions.toStringFunction();
        }
        if (valueConverter == null) {
            valueConverter = Functions.toStringFunction();
        }

        StringBuilder sb = new StringBuilder();
        Iterator<Entry<K, V>> iter = map.entrySet().iterator();
        while (iter.hasNext()) {
            Entry<K, V> entry = iter.next();
            sb.append(Functions.compose(ESCAPER, keyConverter).apply(entry.getKey()));
            sb.append(':');
            sb.append(Functions.compose(ESCAPER, valueConverter).apply(entry.getValue()));
            if (iter.hasNext()) {
                sb.append(',');
            }
        }
        return sb.toString();
    }
}