sloc_chart.py

#!/usr/bin/env python3
from matplotlib import pyplot as plt
from datetime import datetime, timedelta
import subprocess
import json
import sys

if len(sys.argv) != 2:
    print(f'Usage: {sys.argv[0]} <LANG>')
    exit(1)

lang = sys.argv[1]

hashes=[h.split(' ')[0] for h in subprocess.run(['git', 'log', '--oneline'], capture_output=True).stdout.decode('utf-8').strip().split('\n')]
commit_date = subprocess.run(['git', 'show', '-s', '--oneline', '--format=%ci', hashes[-1]], capture_output=True).stdout.decode('utf-8').strip().split(' ')[0]
dateified = datetime.strptime(commit_date, '%Y-%m-%d')
today = datetime.now()
dates = []
sloc = []

while dateified < today:
    date = dateified - timedelta(days=1)
    stringified = f'{date.year}-{date.month}-{date.day}'
    commit_hash = subprocess.run(['git', 'log', '--oneline', f'--after="{stringified}"'], capture_output=True).stdout.decode('utf-8').strip().split('\n')[-1].split(' ')[0]
    print(f'{stringified}:{commit_hash} => ', end='')
    subprocess.run(['git', 'checkout', commit_hash], capture_output=True)
    stats=subprocess.run(['tokei', '-o', 'json'], capture_output=True).stdout.decode('utf-8').strip()
    jsoned = json.loads(stats)
    commit_sloc = 0
    if lang in jsoned:
        commit_sloc=int(json.loads(stats)[lang]['code'])
    print(commit_sloc)
    dates.append(stringified)
    sloc.append(commit_sloc)
    subprocess.run(['git', 'switch', '-'], capture_output=True)
    dateified=dateified + timedelta(weeks=1)

plt.plot(dates, sloc)
plt.xlabel('Date (%Y-%m-%d)')
plt.ylabel('SLOC count')
plt.show()