com.facebook.buck.jvm.java.DirectToJarOutputSettingsSerializer.java Source code

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Here is the source code for com.facebook.buck.jvm.java.DirectToJarOutputSettingsSerializer.java

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/*
 * Copyright 2016-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.jvm.java;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedSet;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.regex.Pattern;

public class DirectToJarOutputSettingsSerializer {
    private DirectToJarOutputSettingsSerializer() {
    }

    private static final String OUTPUT_PATH = "output_path";
    private static final String CLASSES_TO_REMOVE = "classes_to_remove";
    private static final String CLASSES_TO_REMOVE_PATTERN = "pattern";
    private static final String CLASSES_TO_REMOVE_PATTERN_FLAGS = "flags";
    private static final String ENTRIES = "entries";
    private static final String MAIN_CLASS = "main_class";
    private static final String MANIFEST_FILE = "manifest_file";

    public static ImmutableMap<String, Object> serialize(DirectToJarOutputSettings settings) {
        ImmutableMap.Builder<String, Object> builder = ImmutableMap.builder();

        builder.put(OUTPUT_PATH, settings.getDirectToJarOutputPath().toString());

        ImmutableList.Builder<ImmutableMap<String, Object>> serializedPatterns = ImmutableList.builder();
        for (Pattern pattern : settings.getClassesToRemoveFromJar()) {
            serializedPatterns.add(ImmutableMap.<String, Object>of(CLASSES_TO_REMOVE_PATTERN, pattern.pattern(),
                    CLASSES_TO_REMOVE_PATTERN_FLAGS, pattern.flags()));
        }
        builder.put(CLASSES_TO_REMOVE, serializedPatterns.build());

        ImmutableList.Builder<String> serializedEntries = ImmutableList.builder();
        for (Path entry : settings.getEntriesToJar()) {
            serializedEntries.add(entry.toString());
        }
        builder.put(ENTRIES, serializedEntries.build());

        if (settings.getMainClass().isPresent()) {
            builder.put(MAIN_CLASS, settings.getMainClass().get());
        }

        if (settings.getManifestFile().isPresent()) {
            builder.put(MANIFEST_FILE, settings.getManifestFile().get().toString());
        }

        return builder.build();
    }

    @SuppressWarnings("unchecked")
    public static DirectToJarOutputSettings deserialize(Map<String, Object> data) {
        Preconditions.checkArgument(data.containsKey(OUTPUT_PATH));
        Preconditions.checkArgument(data.containsKey(CLASSES_TO_REMOVE));
        Preconditions.checkArgument(data.containsKey(ENTRIES));

        Path outputPath = Paths.get((String) data.get(OUTPUT_PATH));

        ImmutableSet.Builder<Pattern> classesToRemove = ImmutableSet.builder();
        for (Map<String, Object> patternData : (List<Map<String, Object>>) data.get(CLASSES_TO_REMOVE)) {
            Preconditions.checkArgument(patternData.containsKey(CLASSES_TO_REMOVE_PATTERN));
            Preconditions.checkArgument(patternData.containsKey(CLASSES_TO_REMOVE_PATTERN_FLAGS));
            classesToRemove.add(Pattern.compile((String) patternData.get(CLASSES_TO_REMOVE_PATTERN),
                    (int) patternData.get(CLASSES_TO_REMOVE_PATTERN_FLAGS)));
        }

        ImmutableSortedSet.Builder<Path> entries = ImmutableSortedSet.naturalOrder();
        for (String entry : (List<String>) data.get(ENTRIES)) {
            entries.add(Paths.get(entry));
        }

        Optional<String> mainClass = Optional.empty();
        if (data.containsKey(MAIN_CLASS)) {
            mainClass = Optional.of((String) data.get(MAIN_CLASS));
        }

        Optional<Path> manifestFile = Optional.empty();
        if (data.containsKey(MANIFEST_FILE)) {
            manifestFile = Optional.of(Paths.get((String) data.get(MANIFEST_FILE)));
        }

        return DirectToJarOutputSettings.of(outputPath, classesToRemove.build(), entries.build(), mainClass,
                manifestFile);
    }
}