com.facebook.buck.apple.xcode.FrameworkPath.java Source code

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

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/*
 * Copyright 2014-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.facebook.buck.apple.xcode.xcodeproj.PBXReference;
import com.facebook.buck.apple.xcode.xcodeproj.SourceTreePath;
import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.rules.BuildTargetSourcePath;
import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.util.HumanReadableException;
import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;

import org.immutables.value.Value;

import java.nio.file.Path;
import java.nio.file.Paths;

/**
 * Frameworks can be specified as either a path to a file, or a path prefixed by a build setting.
 */
@Value.Immutable
public abstract class FrameworkPath {
    public abstract Optional<SourceTreePath> sourceTreePath();

    public abstract Optional<SourcePath> sourcePath();

    @Value.Check
    protected void check() {
        Preconditions.checkState(
                (sourceTreePath().isPresent() || sourcePath().isPresent())
                        && !(sourceTreePath().isPresent() && sourcePath().isPresent()),
                "Exactly one of sourceTreePath or sourcePath should be set");
    }

    public static FrameworkPath fromString(BuildTarget target, String string) {
        Path path = Paths.get(string);

        String firstElement = Preconditions.checkNotNull(Iterables.getFirst(path, Paths.get(""))).toString();

        if (firstElement.startsWith("$")) { // NOPMD - length() > 0 && charAt(0) == '$' is ridiculous
            Optional<PBXReference.SourceTree> sourceTree = PBXReference.SourceTree.fromBuildSetting(firstElement);
            if (sourceTree.isPresent()) {
                return ImmutableFrameworkPath.builder()
                        .sourceTreePath(new SourceTreePath(sourceTree.get(), path.subpath(1, path.getNameCount())))
                        .build();
            } else {
                throw new HumanReadableException(String.format(
                        "Unknown SourceTree: %s in target: %s. Should be one of: %s", firstElement, target,
                        Joiner.on(',')
                                .join(Iterables.transform(ImmutableList.copyOf(PBXReference.SourceTree.values()),
                                        new Function<PBXReference.SourceTree, String>() {
                                            @Override
                                            public String apply(PBXReference.SourceTree input) {
                                                return "$" + input.toString();
                                            }
                                        }))));
            }
        } else {
            return ImmutableFrameworkPath.builder().sourcePath(new BuildTargetSourcePath(target, Paths.get(string)))
                    .build();
        }
    }

    public static Function<String, FrameworkPath> transformFromString(final BuildTarget target) {
        return new Function<String, FrameworkPath>() {
            @Override
            public FrameworkPath apply(String input) {
                return fromString(target, input);
            }
        };
    }
}