a custom fontparts function to get the git commits of a specific glyph. adapted from Mathieu Reguer's robofont-git tool

RGlyph_GetCommits.py

from git import Repo
import os
from fontTools.ufoLib.glifLib import readGlyphFromString, GlyphSet
import time

def getCommits(self,):
    glif_path = get_glif_path_from_glyph(self)
    commits = get_all_commit_for_file(glif_path)
    history = {GlyphCommit(b):GlyphCommit(b).hash for b in commits}
    return history

def get_glyph_from_string(string):
    dummy = RGlyph().naked()
    readGlyphFromString(string, dummy, dummy.getPointPen())
    return RGlyph(dummy)

def get_glif_path_from_glyph(glyph):
    font_path = glyph.font.path
    glyphs_path = os.path.join(font_path, "glyphs")
    glyphSet = GlyphSet(glyphs_path)
    glif_path = glyphSet.contents.get(glyph.name)
    return os.path.join(glyphs_path, glif_path)

def get_all_commit_for_file(path, max_count=100):
    repo = get_repo_for_file(path)
    repo_path = repo.git.rev_parse("--show-toplevel")
    tree_path = os.path.relpath(path, repo_path)
    commits = repo.iter_commits(
        '--all', max_count=max_count, paths=path)
    blob_commits = [BlobCommit(c, repo.commit(c).tree[tree_path]) for c in commits]
    return blob_commits


def get_repo_for_file(path):
    git_repo = Repo(path, search_parent_directories=True)
    return git_repo


class BlobCommit(object):
    def __init__(self, commit, blob):
        self.commit = commit
        self.blob = blob


class GlyphCommit(object):
    def __init__(self, blob_commit):
        self.load_from_blob_commit(blob_commit)

    def load_from_blob_commit(self, blob_commit):
        blob = blob_commit.blob
        commit = blob_commit.commit

        self.glyph = get_glyph_from_string(blob.data_stream.read())
        self.date = time.strftime("%d %b %Y | %H:%m",
                                  time.gmtime(commit.committed_date))

        self.hash = commit.hexsha
        self.message = commit.message.replace("\n","")
        self.author = commit.author.name

    def __repr__(self):
        return self.message

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from mojo.roboFont import RGlyph

RGlyph.getCommits = getCommits
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