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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.actions.ParameterFile.ParameterFileType;
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 com.google.devtools.build.lib.util.OS;
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();
// Set the busybox tool.
builder.add("--tool").add("MERGE_MANIFEST").add("--");
inputs.addAll(
ruleContext
.getExecutablePrerequisite("$android_resources_busybox", Mode.HOST)
.getRunfilesSupport()
.getRunfilesArtifactsWithoutMiddlemen());
builder.addExecPath("--manifest", manifest);
inputs.add(manifest);
if (mergeeManifests != null && !mergeeManifests.isEmpty()) {
builder.add(
"--mergeeManifests",
mapToDictionaryString(
mergeeManifests, Artifact::getExecPathString, null /* valueConverter */));
inputs.addAll(mergeeManifests.keySet());
}
if (isLibrary) {
builder.add("--mergeType").add("LIBRARY");
}
if (manifestValues != null && !manifestValues.isEmpty()) {
builder.add("--manifestValues", mapToDictionaryString(manifestValues));
}
if (customPackage != null && !customPackage.isEmpty()) {
builder.add("--customPackage", customPackage);
}
builder.addExecPath("--manifestOutput", manifestOutput);
outputs.add(manifestOutput);
if (logOut != null) {
builder.addExecPath("--log", logOut);
outputs.add(logOut);
}
if (OS.getCurrent() == OS.WINDOWS) {
// Some flags (e.g. --mainData) may specify lists (or lists of lists) separated by special
// characters (colon, semicolon, hashmark, ampersand) that don't work on Windows, and quoting
// semantics are very complicated (more so than in Bash), so let's just always use a parameter
// file.
// TODO(laszlocsomor), TODO(corysmith): restructure the Android BusyBux's flags by deprecating
// list-type and list-of-list-type flags that use such problematic separators in favor of
// multi-value flags (to remove one level of listing) and by changing all list separators to a
// platform-safe character (= comma).
spawnActionBuilder.alwaysUseParameterFile(ParameterFileType.SHELL_QUOTED);
} else {
spawnActionBuilder.useParameterFile(ParameterFileType.SHELL_QUOTED);
}
ruleContext.registerAction(
this.spawnActionBuilder
.useDefaultShellEnvironment()
.addTransitiveInputs(inputs.build())
.addOutputs(outputs.build())
.setCommandLine(builder.build())
.setExecutable(
ruleContext.getExecutablePrerequisite("$android_resources_busybox", Mode.HOST))
.setProgressMessage("Merging manifest for %s", ruleContext.getLabel())
.setMnemonic("ManifestMerger")
.build(context));
}
private static final Function<String, String> ESCAPER =
(String value) -> 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();
}
}
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