public static boolean contentEquals()

in src/main/java/org/apache/commons/io/FileUtils.java [366:399]

• 26 lines of code
• 9 McCabe index (conditional complexity)

    public static boolean contentEquals(final File file1, final File file2) throws IOException {
        if (file1 == null && file2 == null) {
            return true;
        }
        if (file1 == null || file2 == null) {
            return false;
        }
        final boolean file1Exists = file1.exists();
        if (file1Exists != file2.exists()) {
            return false;
        }

        if (!file1Exists) {
            // two not existing files are equal
            return true;
        }

        requireFile(file1, "file1");
        requireFile(file2, "file2");

        if (file1.length() != file2.length()) {
            // lengths differ, cannot be equal
            return false;
        }

        if (file1.getCanonicalFile().equals(file2.getCanonicalFile())) {
            // same file
            return true;
        }

        try (InputStream input1 = Files.newInputStream(file1.toPath()); InputStream input2 = Files.newInputStream(file2.toPath())) {
            return IOUtils.contentEquals(input1, input2);
        }
    }