com.ejisto.util.visitor.ConditionMatchingCopyFileVisitor.java Source code

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Here is the source code for com.ejisto.util.visitor.ConditionMatchingCopyFileVisitor.java

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/*
 * Ejisto, a powerful developer assistant
 *
 * Copyright (C) 2010-2014 Celestino Bellone
 *
 * Ejisto is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Ejisto is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.ejisto.util.visitor;

import java.io.File;
import java.io.IOException;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;

import static org.apache.commons.lang3.StringUtils.defaultString;

/**
 * Created by IntelliJ IDEA.
 * User: celestino
 * Date: 2/14/14
 * Time: 8:00 AM
 */
public class ConditionMatchingCopyFileVisitor extends SimpleFileVisitor<Path> {
    private final CopyOptions options;

    public ConditionMatchingCopyFileVisitor(CopyOptions options) {
        this.options = options;
    }

    @Override
    public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
        if (options.srcRoot.compareTo(dir) < 0
                && options.copyType == CopyType.INCLUDE_ONLY_ROOT_MATCHING_RESOURCES) {
            return FileVisitResult.SKIP_SUBTREE;
        }
        Path dest = options.targetRoot.resolve(options.srcRoot.relativize(dir));
        if (!Files.exists(dest)) {
            Files.createDirectories(dest);
        }
        return FileVisitResult.CONTINUE;
    }

    @Override
    public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
        if (isCopyAllowed(file, options)) {
            copy(file);
        }
        return FileVisitResult.CONTINUE;
    }

    private void copy(Path srcFile) throws IOException {
        Path relative = options.srcRoot.relativize(srcFile);
        int count = relative.getNameCount();
        StringBuilder newFileName = new StringBuilder();
        if (count > 1) {
            newFileName.append(relative.getParent().toString());
            newFileName.append(File.separator);
        }
        newFileName.append(defaultString(options.filesPrefix)).append(srcFile.getFileName().toString());
        Files.copy(srcFile, options.targetRoot.resolve(newFileName.toString()),
                StandardCopyOption.REPLACE_EXISTING);
    }

    protected boolean isCopyAllowed(Path file, CopyOptions options) {
        return options.matcher.matches(file);
        //        String fileName = file.getFileName().toString();
        //        boolean nameMatches = options.prefixesList.isEmpty() ||
        //                options.prefixesList.stream()
        //                .filter(fileName::startsWith)
        //                .findFirst().isPresent();
        //        switch (options.copyType) {
        //            case INCLUDE_ALL:
        //                return true;
        //            case INCLUDE_ONLY_MATCHING_RESOURCES:
        //                return nameMatches;
        //            case EXCLUDE_MATCHING_RESOURCES:
        //                return !nameMatches;
        //            default:
        //                return true;
        //        }
    }

}