gitstatus.py

  1#!/usr/bin/env python3
  2from __future__ import print_function
  3
  4import os
  5import sys
  6import re
  7from subprocess import Popen, PIPE, check_output
  8
  9
 10def get_tagname_or_hash():
 11    """return tagname if exists else hash"""
 12    # get hash
 13    hash_cmd = ['git', 'rev-parse', '--short', 'HEAD']
 14    hash_ = check_output(hash_cmd).decode('utf-8').strip()
 15
 16    # get tagname
 17    tags_cmd = ['git', 'for-each-ref', '--points-at=HEAD', '--count=2', '--sort=-version:refname', '--format=%(refname:short)', 'refs/tags']
 18    tags = check_output(tags_cmd).decode('utf-8').split()
 19
 20    if tags:
 21        return tags[0] + ('+' if len(tags) > 1 else '')
 22    elif hash_:
 23        return hash_
 24    return None
 25
 26# Re-use method from https://github.com/magicmonty/bash-git-prompt to get stash count
 27# Use `--git-common-dir` to avoid problems with git worktrees, which don't have individual stashes
 28def get_stash():
 29    cmd = Popen(['git', 'rev-parse', '--git-common-dir'], stdout=PIPE, stderr=PIPE)
 30    so, se = cmd.communicate()
 31    stash_file = '%s%s' % (so.decode('utf-8').rstrip(), '/logs/refs/stash')
 32
 33    try:
 34        with open(stash_file) as f:
 35            return sum(1 for _ in f)
 36    except IOError:
 37        return 0
 38
 39# `git status --porcelain --branch` can collect all information
 40# branch, remote_branch, untracked, staged, changed, conflicts, ahead, behind
 41po = Popen(['git', 'status', '--porcelain', '--branch'], env=dict(os.environ, LANG="C"), stdout=PIPE, stderr=PIPE)
 42stdout, sterr = po.communicate()
 43if po.returncode != 0:
 44    sys.exit(0)  # Not a git repository
 45
 46# collect git status information
 47untracked, staged, changed, deleted, conflicts = [], [], [], [], []
 48ahead, behind = 0, 0
 49status = [(line[0], line[1], line[2:]) for line in stdout.decode('utf-8').splitlines()]
 50for st in status:
 51    if st[0] == '#' and st[1] == '#':
 52        if re.search('Initial commit on', st[2]) or re.search('No commits yet on', st[2]):
 53            branch = st[2].split(' ')[-1]
 54        elif re.search('no branch', st[2]):  # detached status
 55            branch = get_tagname_or_hash()
 56        elif len(st[2].strip().split('...')) == 1:
 57            branch = st[2].strip()
 58        else:
 59            # current and remote branch info
 60            branch, rest = st[2].strip().split('...')
 61            if len(rest.split(' ')) == 1:
 62                # remote_branch = rest.split(' ')[0]
 63                pass
 64            else:
 65                # ahead or behind
 66                divergence = ' '.join(rest.split(' ')[1:])
 67                divergence = divergence.lstrip('[').rstrip(']')
 68                for div in divergence.split(', '):
 69                    if 'ahead' in div:
 70                        ahead = int(div[len('ahead '):].strip())
 71                    elif 'behind' in div:
 72                        behind = int(div[len('behind '):].strip())
 73    elif st[0] == '?' and st[1] == '?':
 74        untracked.append(st)
 75    else:
 76        if st[1] == 'M':
 77            changed.append(st)
 78        if st[1] == 'D':
 79            deleted.append(st)
 80        if st[0] == 'U':
 81            conflicts.append(st)
 82        elif st[0] != ' ':
 83            staged.append(st)
 84
 85stashed = get_stash()
 86if not changed and not deleted and not staged and not conflicts and not untracked:
 87    clean = 1
 88else:
 89    clean = 0
 90
 91out = ' '.join([
 92    branch,
 93    str(ahead),
 94    str(behind),
 95    str(len(staged)),
 96    str(len(conflicts)),
 97    str(len(changed)),
 98    str(len(untracked)),
 99    str(stashed),
100    str(clean),
101    str(len(deleted))
102])
103print(out, end='')