Parse svn history to generate stats reports

svnlogparser.js

// get svn log file first:
// svn log -v --xml  -r {2015-01-01}:{2015-12-08} > svn.log

var fs = require('fs'),
	xml2js = require('xml2js'),
	_ = require('lodash'),
	path = require('path');

var parser = new xml2js.Parser();

fs.readFile(__dirname + '/svn.log', function(err, data) {
	if (err) {
		console.log('Error reading: ', err);
	}
	
	parser.parseString(data, function (err, result) {
		if (err) {
			console.log('Error parsing: ', err);
			return;
		}

		var paths = _.reduce(result.log.logentry, function(result, n, key) {
				var revisionPaths = _.map(n.paths[0].path, '_');
				result = result.concat(revisionPaths);
				return result;
		}, []);
		
		var statsByExtension = _.groupBy(paths, function(p) {
		  return path.extname(p);
		});
		
		statsByExtension = _.map(statsByExtension, function(value, index){
			return {ext: index, count: value.length};
		});
		
		statsByExtension = _.sortByOrder(statsByExtension, ['count'], ['desc']);
		
		_.forEach(statsByExtension, function(value, key){
			console.log(value.ext, ' : ', value.count);
		});
		
		console.log('Done');
	});
});