// Copyright 2015 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.xcode.xcodegen;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.devtools.build.xcode.plmerge.PlistMerging;
import com.dd.plist.NSDictionary;
import com.dd.plist.NSString;
import com.facebook.buck.apple.xcode.xcodeproj.PBXFileReference;
import com.facebook.buck.apple.xcode.xcodeproj.PBXReference;
import com.facebook.buck.apple.xcode.xcodeproj.PBXReference.SourceTree;
import com.facebook.buck.apple.xcode.xcodeproj.XCVersionGroup;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
/**
* Processes the {@link XCVersionGroup} instances in a sequence of {@link PBXReference}s to have
* the {@code currentVersion} field set properly according to the {@code .xccurrentversion} file, if
* available.
*
* <p>This will NOT set the current version for any group where one of the following is true:
* <ul>
* <li>the sourceTree of the group is not GROUP (meaning it is not relative to the workspace root)
* <li>the {@code .xccurrentversion} file does not exist or is not accessible
* <li>the plist in the file does not contain the correct entry
* <li>the {@link XCVersionGroup} does not have a child that matches the version in the
* {@code .xccurrentversion} file
* </ul>
*/
public final class CurrentVersionSetter implements PbxReferencesProcessor {
private final Path workspaceRoot;
public CurrentVersionSetter(Path workspaceRoot) {
this.workspaceRoot = Preconditions.checkNotNull(workspaceRoot);
}
@Override
public Iterable<PBXReference> process(Iterable<PBXReference> references) {
for (PBXReference reference : references) {
if ((reference instanceof XCVersionGroup) && (reference.getPath() != null)) {
trySetCurrentVersion((XCVersionGroup) reference);
}
}
return references;
}
private void trySetCurrentVersion(XCVersionGroup group) {
if (group.getSourceTree() != SourceTree.GROUP) {
return;
}
Path groupPath = workspaceRoot.resolve(group.getPath());
Path currentVersionPlist = groupPath.resolve(".xccurrentversion");
if (!Files.isReadable(currentVersionPlist)) {
return;
}
NSDictionary plist;
try {
plist = PlistMerging.readPlistFile(currentVersionPlist);
} catch (IOException e) {
return;
}
NSString currentVersion = (NSString) plist.get("_XCCurrentVersionName");
if (currentVersion == null) {
return;
}
for (PBXFileReference child : group.getChildren()) {
child.setExplicitFileType(Optional.of("wrapper.xcdatamodel"));
if (child.getName().equals(currentVersion.getContent())) {
group.setCurrentVersion(Optional.of(child));
}
}
}
}