public static boolean fileContentEquals()

in src/main/java/org/apache/commons/io/file/PathUtils.java [734:773]
34 lines of code
11 McCabe index (conditional complexity)

    public static boolean fileContentEquals(final Path path1, final Path path2, final LinkOption[] linkOptions, final OpenOption[] openOptions)
        throws IOException {
        if (path1 == null && path2 == null) {
            return true;
        }
        if (path1 == null || path2 == null) {
            return false;
        }
        final Path nPath1 = path1.normalize();
        final Path nPath2 = path2.normalize();
        final boolean path1Exists = exists(nPath1, linkOptions);
        if (path1Exists != exists(nPath2, linkOptions)) {
            return false;
        }
        if (!path1Exists) {
            // Two not existing files are equal?
            // Same as FileUtils
            return true;
        }
        if (Files.isDirectory(nPath1, linkOptions)) {
            // don't compare directory contents.
            throw new IOException("Can't compare directories, only files: " + nPath1);
        }
        if (Files.isDirectory(nPath2, linkOptions)) {
            // don't compare directory contents.
            throw new IOException("Can't compare directories, only files: " + nPath2);
        }
        if (Files.size(nPath1) != Files.size(nPath2)) {
            // lengths differ, cannot be equal
            return false;
        }
        if (path1.equals(path2)) {
            // same file
            return true;
        }
        try (InputStream inputStream1 = Files.newInputStream(nPath1, openOptions);
            InputStream inputStream2 = Files.newInputStream(nPath2, openOptions)) {
            return IOUtils.contentEquals(inputStream1, inputStream2);
        }
    }