NodeでGitのグラフをゴリゴリ作る

gistfile1.js

var childProcess = require('child_process');
var nedb = require('nedb');

db = {};
db.commits = new nedb('db/commits.db');
db.commits.loadDatabase();

var update = function(lines, db, cb, latestId) {
	var head = lines.shift();
	var splitted = head.split(',,');
	var parents = splitted[1].split(' ');
	var id = splitted[0];
	var author = splitted[3];
	var date = splitted[4];
	var comment = splitted[5];
	var commit = {
		_id: id,
		author: author,
		date: date,
		comment: comment,
		parents: parents
	};
	if (!latestId) {
		latestId = commit._id;
	}
	db.commits.insert(commit, function(err, commit) {
		if (lines.length) {
			update(lines, db, cb, latestId);
		} else{
			cb(latestId);
		}
	});
};

var recent = function(callback, db) {
	var log = childProcess.exec('git log --date=iso --pretty=format:"%h,,%p,,%t,,%an,,%ad,,%s"', function(error, stdout, stderr) {
		var lines = stdout.split('\n');
		update(lines, db, callback);
	});
};

var log = function(latestId, db) {
	if (!latestId) {
		return;
	}
	db.commits.findOne({
		_id: latestId
	}, function(error, commit) {
		console.log(commit);
		var parentId = commit.parents[0]; // とりあえずmasterのみ
		log(parentId, db);
	});
};

recent(function(latest) {
	log(latest, db);
}, db);