org.talend.sdk.component.server.service.GlobService Maven / Gradle / Ivy

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/**
 * Copyright (C) 2006-2020 Talend Inc. - www.talend.com
 *
 * 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 org.talend.sdk.component.server.service;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.stream.Stream;

import javax.enterprise.context.ApplicationScoped;

import org.talend.sdk.component.path.PathFactory;

@ApplicationScoped
public class GlobService {

    public Stream toFiles(final String path) {
        if (path.endsWith("*") || path.endsWith("*.properties")) {
            final String prefix = path.substring(0, path.lastIndexOf('*'));
            final int lastSlash = prefix.replace(File.separatorChar, '/').lastIndexOf('/');
            final String folder;
            final String filePrefix;
            if (lastSlash > 0) {
                folder = prefix.substring(0, lastSlash);
                filePrefix = prefix.substring(lastSlash + 1);
            } else {
                folder = prefix;
                filePrefix = "";
            }
            return Stream.of(PathFactory.get(folder)).filter(Files::exists).flatMap(it -> {
                try {
                    return Files.list(it).filter(file -> {
                        final String name = file.getFileName().toString();
                        return name.startsWith(filePrefix) && name.endsWith(".properties");
                    });
                } catch (final IOException e) {
                    throw new IllegalStateException(e);
                }
            }).filter(Files::exists);
        }
        return Stream.of(PathFactory.get(path));
    }
}