Script for creating a graph of files from a Git history.

git-to-graph.py

'''Creates a graph of source files connected by cooccurrence in commits.

git log --oneline --name-only | python git-to-graph.py > graph.csv
'''
import sys
import re

print('file1,file2,commit')
commit = None
files = []
for line in sys.stdin:
  if re.match('[0-9a-f]{9} ', line):
    if commit and len(files) < 10:
      for f1 in files:
        for f2 in files:
          if f1 != f2:
            print(f'"{f1}","{f2}","{commit}"')
    commit = line[10:].strip().replace('"', '\\"')
    files = []
  else:
    files.append(line.strip().replace('"', '\\"'))