How to diff with two files by JGit without creating repo?

diff, jgit

Solution

thank you! I have solved this question!

method is below

private static String getDiff(String file1, String file2) {
    OutputStream out = new ByteArrayOutputStream();
    try {
        RawText rt1 = new RawText(new File(file1));
        RawText rt2 = new RawText(new File(file2));
        EditList diffList = new EditList();
        diffList.addAll(differ.diff(COMP, rt1, rt2));
        new DiffFormatter(out).format(diffList, rt1, rt2);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return out.toString();
}

thank you for your help!

Problem

When I use JGit to `diff` with two files, I must create a repo first. But in Git, I only need to use command `git diff --no-index 1.txt 2.txt`. Is there a way to use `diff` in JGit without creating repo?

Original source