Java Path File Content contentEquals(Path leftPath, Path rightPath)

Description

content Equals

License

Open Source License

Declaration

static boolean contentEquals(Path leftPath, Path rightPath) throws IOException 

Method Source Code

//package com.java2s;
/*/*from www.j  ava 2  s . c o m*/
 * This is free and unencumbered software released into the public domain.
 *
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 *
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * For more information, please refer to <http://unlicense.org/>
 */

import java.io.BufferedReader;
import java.io.IOException;

import java.nio.file.Files;
import java.nio.file.Path;

public class Main {
    static boolean contentEquals(Path leftPath, Path rightPath) throws IOException {
        boolean leftExists = Files.exists(leftPath);
        boolean rightExists = Files.exists(rightPath);
        if (!leftExists && !rightExists) {
            return true;
        }
        if (leftExists != rightExists) {
            return false;
        }
        if (Files.isSameFile(leftPath, rightPath)) {
            return true;
        }
        // Both exist
        try (BufferedReader leftStream = Files.newBufferedReader(leftPath);
                BufferedReader rightStream = Files.newBufferedReader(rightPath)) {
            for (;;) {
                String leftLine = leftStream.readLine();
                String rightLine = rightStream.readLine();
                if (leftLine == null && rightLine == null) {
                    return true;
                }
                if ((leftLine == null) != (rightLine == null)) {
                    return false;
                }
                assert leftLine != null && rightLine != null;
                if (!leftLine.equals(rightLine)) {
                    return false;
                }
            }
        }
    }
}

Related

1. appendToLog(String content, Path newFile)
2. assertSameContent(String expectedFilePath, String actualFilePath)
3. fileContent(final Path p)
4. fileContent(final String filePath)
5. getContent(Path path)
6. getFileContents(final String absFilePath)