update git.py for python3

[DedSecer]

Command git for python3. (do not support python2)

(Still needs tests)
Directly using dulwich(dulwich is more stronger now) without gittle now. (gittle it not update anymore now)

TODO

• git checkout . and git add .
• git config
• git diff
• git merge
• set upstream
• support ssh key
• remote branch support

Known issues

• Password input will be echoed while authorizing
• github not support authorize by github password now.(use a personal access token or add a ssh key instead)

[fschaeck]

@DedSecer Any progress here? I wouldn't want to merge a git implementation without ssh key support. Not having any Python 2 support is also a bit of a problem, but maybe it's time to thing about a Python-3-only-StaSh soon...

[DedSecer]

@fschaeck Sorry,I am busying.Since somebody noticed this, I will trying to process,this could be very slow.

[cclauss]

Why not use https://pypi.org/project/dulwich ?

DedSecer/dulwich 3 commits ahead, 545 commits behind jelmer/dulwich

[cclauss]

Please rebase.

[tringcooler]

This PR still can not work in Pythonista 3.4,
So, I made some modifications to it and it finally worked properly.

Firstly, Pythonista doesn't support Subprocesses, so it cannot support shell hooks for git.
So I commented out the code in the following files of Dulwich to avoid executing hooks:
stash/lib/dulwich/repo.py, line 1104

        #self.hooks["pre-commit"] = PreCommitShellHook(self.controldir())
        #self.hooks["commit-msg"] = CommitMsgShellHook(self.controldir())
        #self.hooks["post-commit"] = PostCommitShellHook(self.controldir())
        #self.hooks["post-receive"] = PostReceiveShellHook(self.controldir())

Then, there is also a small issue in the git.py file of this PR. At function git_ add, when adding files, it check whether they are in the repo index. Doing so will result in the inability to add new files.
So I shortcut this checking:
stash/bin/git.py, line 348

if True or file.encode() in repo.open_index():

Finally, it works correctly.