cheat.py

"""
Script for creating past dated git commits. For the github green dots.

Usage:
    
    >>> cheat 27/2 "my commit message"
    
    will trigger:
        
    >>>git commit -m "my commit message"
    >>>git commit --amend --no-edit --date="Wed 27 Feb 21:56:23 2016 +0000"
    
Notes:
    It uses the current datetime, at GMT.
    
Future:
    Allow specifying of time (inc random)
    Integrate with script to:
       checkout first commit from repoA
       cheat commit to repoB
       increment date
       repeat
    (Thus letting you rebuild past projects and spanning commits one a day to get those green dots)
    
"""
import sys, subprocess, datetime
from dateutil.tz import tzlocal

def commit(msg):
    """
    Will send:
    git commit -m "your message"
    """
    cmd = 'git commit -m "{0}"'.format(msg)
    return subprocess.call(cmd)

def amend(date_str):
    """
    Will send:
    git commit --amend --no-edit --date="Wed 03 Feb 21:56:23 2016 +0000"
    """
    now = datetime.datetime.now(tzlocal())
    date_elements = date_str.split('/')
    day = int(date_elements[0])
    month = int(date_elements[1])
    if len(date_elements) == 3:
        year = int(date_elements[2])
        if year < 100:
            year = year + 2000 
    else:
        year = now.year
    new_date = datetime.datetime(year, month, day, now.hour, now.minute, 
                now.second)
    new_date_str = new_date.strftime('%a %d %b %H:%M:%S %Y ') + now.strftime('%z')
    cmd = 'git commit --amend --no-edit --date="{0}"'.format(new_date_str)
    return subprocess.call(cmd)
    
if commit(sys.argv[2]) == 0:
    amend(sys.argv[1])
else:
    print 'Please pass a date and "message in quotes"'