DefaultFileCopyProcessor.java

/*
 * 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.tencent.tinker.build.aapt;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

public class DefaultFileCopyProcessor implements FileUtil.FileCopyProcessor {

    /**
     * copyFileToFileProcess
     *
     * @param from,maybe   directory
     * @param to,maybe     directory
     * @param isFile,maybe directory or file
     * @return boolean, if true keep going copy,only active in directory so far
     */
    public boolean copyFileToFileProcess(final String from, final String to, final boolean isFile) {
        try {
            if (isFile) {
                String fromFile = new File(from).getAbsolutePath();
                String toFile = new File(to).getAbsolutePath();
                if (fromFile.equals(toFile)) {
                    toFile = toFile + "_copy";
                }
                FileUtil.createFile(toFile);
                InputStream inputStream = new FileInputStream(fromFile);
                OutputStream outputStream = new FileOutputStream(toFile);
                try {
                    byte[] buffer = new byte[Constant.Capacity.BYTES_PER_KB];
                    int length = -1;
                    while ((length = inputStream.read(buffer, 0, buffer.length)) != -1) {
                        outputStream.write(buffer, 0, length);
                        outputStream.flush();
                    }
                } finally {
                    if (inputStream != null) {
                        inputStream.close();
                    }
                    if (outputStream != null) {
                        outputStream.close();
                    }
                }
            } else {
                FileUtil.createDirectory(to);
            }
        } catch (Exception e) {
            throw new FileCopyException(e);
        }
        return true;
    }
}