com.facebook.buck.apple.AppleInfoPlistParsing.java Source code

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Here is the source code for com.facebook.buck.apple.AppleInfoPlistParsing.java

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/*
 * Copyright 2015-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;

import com.dd.plist.NSDictionary;
import com.dd.plist.NSObject;
import com.dd.plist.PropertyListParser;

import com.google.common.base.Optional;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Utility class to parse Info.plist from an Apple bundle.
 */
public class AppleInfoPlistParsing {

    // Utility class, do not instantiate.
    private AppleInfoPlistParsing() {
    }

    /**
     * Extracts the bundle ID (CFBundleIdentifier) from an Info.plist, returning it if present.
     */
    public static Optional<String> getBundleIdFromPlistStream(InputStream inputStream) throws IOException {
        NSDictionary infoPlist;
        try (BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream)) {
            try {
                infoPlist = (NSDictionary) PropertyListParser.parse(bufferedInputStream);
            } catch (Exception e) {
                throw new IOException(e);
            }
        }
        NSObject bundleId = infoPlist.objectForKey("CFBundleIdentifier");
        if (bundleId == null) {
            return Optional.absent();
        } else {
            return Optional.of(bundleId.toString());
        }
    }
}