How can I graph the Lines of Code history for git repo?
<p>Basically I want to get the number of lines-of-code in the repository after each commit.</p>

<p>The only (really crappy) ways I have found is to use git filter-branch to run "wc -l *", and a script that run git reset --hard on each commit, then ran wc -l</p>

<p>To make it a bit clearer, when the tool is run, it would output the lines of code of the very first commit, then the second and so on.. This is what I want the tool to output (as an example):</p>

<pre><code>me@something:~/$ gitsloc --branch master
10
48
153
450
1734
1542
</code></pre>

<p>I've played around with the ruby 'git' library, but the closest I found was using the .lines() method on a diff, which seems like it should give the added lines (but does not.. it returns 0 when you delete lines for example)</p>

<pre><code>require 'rubygems'
require 'git'

total = 0
g = Git.open(working_dir = '/Users/dbr/Desktop/code_projects/tvdb_api')


last = nil
g.log.each do |cur|
  diff = g.diff(last, cur)
  total = total + diff.lines
  puts total
  last = cur
end
</code></pre>

<p>You may get both added and removed lines with git log, like:</p>

<pre><code>git log --shortstat --reverse --pretty=oneline
</code></pre>

<p>From this, you can write a similar script to the one you did using this info. In python:</p>

<pre><code>#!/usr/bin/python

"""
Display the per-commit size of the current git branch.
"""

import subprocess
import re
import sys

def main(argv):
  git = subprocess.Popen(["git", "log", "--shortstat", "--reverse",
                        "--pretty=oneline"], stdout=subprocess.PIPE)
  out, err = git.communicate()
  total_files, total_insertions, total_deletions = 0, 0, 0
  for line in out.split('\n'):
    if not line: continue
    if line[0] != ' ': 
      # This is a description line
      hash, desc = line.split(" ", 1)
    else:
      # This is a stat line
      data = re.findall(
        ' (\d+) files changed, (\d+) insertions\(\+\), (\d+) deletions\(-\)', 
        line)
      files, insertions, deletions = ( int(x) for x in data[0] )
      total_files += files
      total_insertions += insertions
      total_deletions += deletions
      print "%s: %d files, %d lines" % (hash, total_files,
                                        total_insertions - total_deletions)


if __name__ == '__main__':
  sys.exit(main(sys.argv))
</code></pre>
