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// Copyright 2018 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.android.aapt2;
import com.android.SdkConstants;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Multimap;
import com.google.common.collect.MultimapBuilder;
import com.google.devtools.build.android.AndroidDataWritingVisitor;
import com.google.devtools.build.android.AndroidResourceMerger.MergingException;
import com.google.devtools.build.android.FullyQualifiedName;
import com.google.devtools.build.android.proto.SerializeFormat.ToolAttributes;
import com.google.devtools.build.android.xml.Namespaces;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Map.Entry;
import java.util.function.Function;
import javax.xml.namespace.QName;
/**
* An AndroidDataWritingVisitor that only records {@link SdkConstants#TOOLS_URI} attributes to the
* {@link ToolAttributes} proto format. Comma delimited values {@link SdkConstants#ATTR_KEEP} and
* {@link SdkConstants#ATTR_DISCARD} will be expanded into separate values.
*/
class SdkToolAttributeWriter implements AndroidDataWritingVisitor {
private static final Splitter COMMA_SPLITTER = Splitter.on(',');
private static final Function<String, Iterable<String>> DEFAULT_ATTRIBUTE_PROCESSOR =
ImmutableList::of;
private static final ImmutableMap<String, Function<String, Iterable<String>>>
ATTRIBUTE_PROCESSORS =
ImmutableMap.of(
SdkConstants.ATTR_KEEP, COMMA_SPLITTER::split,
SdkConstants.ATTR_DISCARD, COMMA_SPLITTER::split);
final Multimap<String, String> attributes = MultimapBuilder.hashKeys().hashSetValues().build();
private final Path out;
SdkToolAttributeWriter(Path out) {
this.out = out;
}
@Override
public void flush() throws IOException {
ToolAttributes.Builder builder = ToolAttributes.newBuilder();
for (Entry<String, Collection<String>> entry : attributes.asMap().entrySet()) {
builder.putAttributes(
entry.getKey(),
ToolAttributes.ToolAttributeValues.newBuilder().addAllValues(entry.getValue()).build());
}
try (OutputStream stream = new BufferedOutputStream(Files.newOutputStream(out))) {
builder.build().writeTo(stream);
}
}
@Override
public Path copyManifest(Path sourceManifest) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void copyAsset(Path source, String relativeDestinationPath) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void copyResource(Path source, String relativeDestinationPath) throws MergingException {
throw new UnsupportedOperationException();
}
@Override
public void defineAttribute(FullyQualifiedName fqn, String name, String value) {
final QName qName = QName.valueOf(fqn.name());
if (SdkConstants.TOOLS_URI.equals(qName.getNamespaceURI())) {
attributes.putAll(
qName.getLocalPart(),
ATTRIBUTE_PROCESSORS
.getOrDefault(qName.getLocalPart(), DEFAULT_ATTRIBUTE_PROCESSOR)
.apply(value));
}
}
@Override
public void defineNamespacesFor(FullyQualifiedName fqn, Namespaces namespaces) {}
@Override
public ValueResourceDefinitionMetadata define(FullyQualifiedName fqn) {
throw new UnsupportedOperationException();
}
}
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