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/*
* Copyright 2013-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.apple.xcode;
import com.dd.plist.NSArray;
import com.dd.plist.NSDictionary;
import com.dd.plist.NSObject;
import com.dd.plist.NSString;
import com.facebook.buck.log.Logger;
import com.facebook.buck.apple.xcode.xcodeproj.PBXObject;
import com.facebook.buck.apple.xcode.xcodeproj.PBXProject;
import java.util.List;
import javax.annotation.concurrent.NotThreadSafe;
/**
* Serializer that handles conversion of an in-memory object graph representation of an xcode
* project (instances of {@link PBXObject}) into an Apple property list.
*
* Serialization proceeds from the root object, a ${link PBXProject} instance, to all of its
* referenced objects. Each object being visited calls back into this class ({@link #addField}) to
* populate the plist representation with its fields.
*/
@NotThreadSafe
public class XcodeprojSerializer {
private static final Logger LOG = Logger.get(XcodeprojSerializer.class);
private final PBXProject rootObject;
private final NSDictionary objects;
private final GidGenerator gidGenerator;
private NSDictionary currentObject;
public XcodeprojSerializer(GidGenerator gidGenerator, PBXProject project) {
rootObject = project;
objects = new NSDictionary();
this.gidGenerator = gidGenerator;
}
/**
* Generate a plist serialization of project bound to this serializer.
*/
public NSDictionary toPlist() {
serializeObject(rootObject);
NSDictionary root = new NSDictionary();
root.put("archiveVersion", "1");
root.put("classes", new NSDictionary());
root.put("objectVersion", "46");
root.put("objects", objects);
root.put("rootObject", rootObject.getGlobalID());
return root;
}
/**
* Serialize a {@link PBXObject} and its recursive descendants into the object dictionary.
*
* @return the GID of the serialized object
*
* @see PBXObject#serializeInto
*/
private String serializeObject(PBXObject obj) {
if (obj.getGlobalID() == null) {
obj.setGlobalID(obj.generateGid(gidGenerator));
LOG.verbose("Set new object GID: %s", obj);
} else {
// Check that the object has already been serialized.
NSObject object = objects.get(obj.getGlobalID());
if (object != null) {
LOG.verbose("Object %s found, returning existing object %s", obj, object);
return obj.getGlobalID();
} else {
LOG.verbose("Object already had GID set: %s", obj);
}
}
// Save the existing object being deserialized.
NSDictionary stack = currentObject;
currentObject = new NSDictionary();
currentObject.put("isa", obj.isa());
obj.serializeInto(this);
objects.put(obj.getGlobalID(), currentObject);
// Restore the existing object being deserialized.
currentObject = stack;
return obj.getGlobalID();
}
public void addField(String name, PBXObject obj) {
if (obj != null) {
String gid = serializeObject(obj);
currentObject.put(name, gid);
}
}
public void addField(String name, int val) {
currentObject.put(name, val);
}
public void addField(String name, String val) {
if (val != null) {
currentObject.put(name, val);
}
}
public void addField(String name, boolean val) {
currentObject.put(name, val);
}
public void addField(String name, List<? extends PBXObject> objectList) {
NSArray array = new NSArray(objectList.size());
for (int i = 0; i < objectList.size(); i++) {
String gid = serializeObject(objectList.get(i));
array.setValue(i, new NSString(gid));
}
currentObject.put(name, array);
}
public void addField(String name, NSObject v) {
if (v != null) {
currentObject.put(name, v);
}
}
}
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