com.facebook.buck.io.filesystem.RecursiveFileMatcher.java Source code

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Here is the source code for com.facebook.buck.io.filesystem.RecursiveFileMatcher.java

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/*
 * Copyright 2018-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.io.filesystem;

import com.facebook.buck.io.watchman.Capability;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import java.io.File;
import java.nio.file.Path;
import java.util.Objects;
import java.util.Set;

/** Matcher that matches paths within {@code basePath} directory. */
public class RecursiveFileMatcher implements PathMatcher {

    private final Path basePath;

    private RecursiveFileMatcher(Path basePath) {
        Preconditions.checkState(!basePath.isAbsolute());
        this.basePath = basePath;
    }

    @Override
    public boolean equals(Object other) {
        if (this == other) {
            return true;
        }
        if (!(other instanceof RecursiveFileMatcher)) {
            return false;
        }
        RecursiveFileMatcher that = (RecursiveFileMatcher) other;
        return Objects.equals(basePath, that.basePath);
    }

    @Override
    public int hashCode() {
        return Objects.hash(basePath);
    }

    @Override
    public String toString() {
        return String.format("%s basePath=%s", super.toString(), basePath);
    }

    @Override
    public boolean matches(Path path) {
        return path.startsWith(basePath);
    }

    public Path getPath() {
        return basePath;
    }

    @Override
    public ImmutableList<?> toWatchmanMatchQuery(Set<Capability> capabilities) {
        Path ignorePath = basePath;
        if (capabilities.contains(Capability.DIRNAME)) {
            return ImmutableList.of("dirname", ignorePath.toString());
        } else {
            return ImmutableList.of("match", ignorePath + File.separator + "**", "wholename");
        }
    }

    @Override
    public String getPathOrGlob() {
        return getPath().toString();
    }

    /** @return The matcher for paths that start with {@code basePath}. */
    public static RecursiveFileMatcher of(Path basePath) {
        return new RecursiveFileMatcher(basePath);
    }
}