Cleanup: whitespace changes & removed extra ';'.

[gitstats.git] / gitstats

#!/usr/bin/env python
# Copyright (c) 2007-2011 Heikki Hokkanen <hoxu@users.sf.net> & others (see doc/author.txt)
# GPLv2 / GPLv3
import datetime
import getopt
import glob
import os
import pickle
import platform
import re
import shutil
import subprocess
import sys
import time
import zlib

GNUPLOT_COMMON = 'set terminal png transparent size 640,240\nset size 1.0,1.0\n'
ON_LINUX = (platform.system() == 'Linux')
WEEKDAYS = ('Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun')

exectime_internal = 0.0
exectime_external = 0.0
time_start = time.time()

# By default, gnuplot is searched from path, but can be overridden with the
# environment variable "GNUPLOT"
gnuplot_cmd = 'gnuplot'
if 'GNUPLOT' in os.environ:
        gnuplot_cmd = os.environ['GNUPLOT']

conf = {
        'max_domains': 10,
        'max_ext_length': 10,
        'style': 'gitstats.css',
        'max_authors': 20,
        'authors_top': 5,
        'commit_begin': '',
        'commit_end': '',
        'linear_linestats': 1,
        'project_name': '',
}

def getpipeoutput(cmds, quiet = False):
        global exectime_external
        start = time.time()
        if not quiet and ON_LINUX and os.isatty(1):
                print '>> ' + ' | '.join(cmds),
                sys.stdout.flush()
        p0 = subprocess.Popen(cmds[0], stdout = subprocess.PIPE, shell = True)
        p = p0
        for x in cmds[1:]:
                p = subprocess.Popen(x, stdin = p0.stdout, stdout = subprocess.PIPE, shell = True)
                p0 = p
        output = p.communicate()[0]
        end = time.time()
        if not quiet:
                if ON_LINUX and os.isatty(1):
                        print '\r',
                print '[%.5f] >> %s' % (end - start, ' | '.join(cmds))
        exectime_external += (end - start)
        return output.rstrip('\n')

def getcommitrange(defaultrange = 'HEAD', end_only = False):
        if len(conf['commit_end']) > 0:
                if end_only or len(conf['commit_begin']) == 0:
                        return conf['commit_end']
                return '%s..%s' % (conf['commit_begin'], conf['commit_end'])
        return defaultrange

def getkeyssortedbyvalues(dict):
        return map(lambda el : el[1], sorted(map(lambda el : (el[1], el[0]), dict.items())))

# dict['author'] = { 'commits': 512 } - ...key(dict, 'commits')
def getkeyssortedbyvaluekey(d, key):
        return map(lambda el : el[1], sorted(map(lambda el : (d[el][key], el), d.keys())))

VERSION = 0
def getversion():
        global VERSION
        if VERSION == 0:
                VERSION = getpipeoutput(["git rev-parse --short %s" % getcommitrange('HEAD')]).split('\n')[0]
        return VERSION

def getgitversion():
        return getpipeoutput(['git --version']).split('\n')[0]

def getgnuplotversion():
        return getpipeoutput(['gnuplot --version']).split('\n')[0]

class DataCollector:
        """Manages data collection from a revision control repository."""
        def __init__(self):
                self.stamp_created = time.time()
                self.cache = {}
        
        ##
        # This should be the main function to extract data from the repository.
        def collect(self, dir):
                self.dir = dir
                if len(conf['project_name']) == 0:
                        self.projectname = os.path.basename(os.path.abspath(dir))
                else:
                        self.projectname = conf['project_name']
        
        ##
        # Load cacheable data
        def loadCache(self, cachefile):
                if not os.path.exists(cachefile):
                        return
                print 'Loading cache...'
                f = open(cachefile, 'rb')
                try:
                        self.cache = pickle.loads(zlib.decompress(f.read()))
                except:
                        # temporary hack to upgrade non-compressed caches
                        f.seek(0)
                        self.cache = pickle.load(f)
                f.close()
        
        ##
        # Produce any additional statistics from the extracted data.
        def refine(self):
                pass

        ##
        # : get a dictionary of author
        def getAuthorInfo(self, author):
                return None
        
        def getActivityByDayOfWeek(self):
                return {}

        def getActivityByHourOfDay(self):
                return {}

        # : get a dictionary of domains
        def getDomainInfo(self, domain):
                return None

        ##
        # Get a list of authors
        def getAuthors(self):
                return []
        
        def getFirstCommitDate(self):
                return datetime.datetime.now()
        
        def getLastCommitDate(self):
                return datetime.datetime.now()
        
        def getStampCreated(self):
                return self.stamp_created
        
        def getTags(self):
                return []
        
        def getTotalAuthors(self):
                return -1
        
        def getTotalCommits(self):
                return -1
                
        def getTotalFiles(self):
                return -1
        
        def getTotalLOC(self):
                return -1
        
        ##
        # Save cacheable data
        def saveCache(self, cachefile):
                print 'Saving cache...'
                f = open(cachefile, 'wb')
                #pickle.dump(self.cache, f)
                data = zlib.compress(pickle.dumps(self.cache))
                f.write(data)
                f.close()

class GitDataCollector(DataCollector):
        def collect(self, dir):
                DataCollector.collect(self, dir)

                try:
                        self.total_authors = int(getpipeoutput(['git shortlog -s %s' % getcommitrange(), 'wc -l']))
                except:
                        self.total_authors = 0
                #self.total_lines = int(getoutput('git-ls-files -z |xargs -0 cat |wc -l'))

                self.activity_by_hour_of_day = {} # hour -> commits
                self.activity_by_day_of_week = {} # day -> commits
                self.activity_by_month_of_year = {} # month [1-12] -> commits
                self.activity_by_hour_of_week = {} # weekday -> hour -> commits
                self.activity_by_hour_of_day_busiest = 0
                self.activity_by_hour_of_week_busiest = 0
                self.activity_by_year_week = {} # yy_wNN -> commits
                self.activity_by_year_week_peak = 0

                self.authors = {} # name -> {commits, first_commit_stamp, last_commit_stamp, last_active_day, active_days, lines_added, lines_removed}

                # domains
                self.domains = {} # domain -> commits

                # author of the month
                self.author_of_month = {} # month -> author -> commits
                self.author_of_year = {} # year -> author -> commits
                self.commits_by_month = {} # month -> commits
                self.commits_by_year = {} # year -> commits
                self.first_commit_stamp = 0
                self.last_commit_stamp = 0
                self.last_active_day = None
                self.active_days = set()

                # lines
                self.total_lines = 0
                self.total_lines_added = 0
                self.total_lines_removed = 0

                # timezone
                self.commits_by_timezone = {} # timezone -> commits

                # tags
                self.tags = {}
                lines = getpipeoutput(['git show-ref --tags']).split('\n')
                for line in lines:
                        if len(line) == 0:
                                continue
                        (hash, tag) = line.split(' ')

                        tag = tag.replace('refs/tags/', '')
                        output = getpipeoutput(['git log "%s" --pretty=format:"%%at %%aN" -n 1' % hash])
                        if len(output) > 0:
                                parts = output.split(' ')
                                stamp = 0
                                try:
                                        stamp = int(parts[0])
                                except ValueError:
                                        stamp = 0
                                self.tags[tag] = { 'stamp': stamp, 'hash' : hash, 'date' : datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d'), 'commits': 0, 'authors': {} }

                # collect info on tags, starting from latest
                tags_sorted_by_date_desc = map(lambda el : el[1], reversed(sorted(map(lambda el : (el[1]['date'], el[0]), self.tags.items()))))
                prev = None
                for tag in reversed(tags_sorted_by_date_desc):
                        cmd = 'git shortlog -s "%s"' % tag
                        if prev != None:
                                cmd += ' "^%s"' % prev
                        output = getpipeoutput([cmd])
                        if len(output) == 0:
                                continue
                        prev = tag
                        for line in output.split('\n'):
                                parts = re.split('\s+', line, 2)
                                commits = int(parts[1])
                                author = parts[2]
                                self.tags[tag]['commits'] += commits
                                self.tags[tag]['authors'][author] = commits

                # Collect revision statistics
                # Outputs "<stamp> <date> <time> <timezone> <author> '<' <mail> '>'"
                lines = getpipeoutput(['git rev-list --pretty=format:"%%at %%ai %%aN <%%aE>" %s' % getcommitrange('HEAD'), 'grep -v ^commit']).split('\n')
                for line in lines:
                        parts = line.split(' ', 4)
                        author = ''
                        try:
                                stamp = int(parts[0])
                        except ValueError:
                                stamp = 0
                        timezone = parts[3]
                        author, mail = parts[4].split('<', 1)
                        author = author.rstrip()
                        mail = mail.rstrip('>')
                        domain = '?'
                        if mail.find('@') != -1:
                                domain = mail.rsplit('@', 1)[1]
                        date = datetime.datetime.fromtimestamp(float(stamp))

                        # First and last commit stamp
                        if self.last_commit_stamp == 0:
                                self.last_commit_stamp = stamp
                        self.first_commit_stamp = stamp

                        # activity
                        # hour
                        hour = date.hour
                        self.activity_by_hour_of_day[hour] = self.activity_by_hour_of_day.get(hour, 0) + 1
                        # most active hour?
                        if self.activity_by_hour_of_day[hour] > self.activity_by_hour_of_day_busiest:
                                self.activity_by_hour_of_day_busiest = self.activity_by_hour_of_day[hour]

                        # day of week
                        day = date.weekday()
                        self.activity_by_day_of_week[day] = self.activity_by_day_of_week.get(day, 0) + 1

                        # domain stats
                        if domain not in self.domains:
                                self.domains[domain] = {}
                        # commits
                        self.domains[domain]['commits'] = self.domains[domain].get('commits', 0) + 1

                        # hour of week
                        if day not in self.activity_by_hour_of_week:
                                self.activity_by_hour_of_week[day] = {}
                        self.activity_by_hour_of_week[day][hour] = self.activity_by_hour_of_week[day].get(hour, 0) + 1
                        # most active hour?
                        if self.activity_by_hour_of_week[day][hour] > self.activity_by_hour_of_week_busiest:
                                self.activity_by_hour_of_week_busiest = self.activity_by_hour_of_week[day][hour]

                        # month of year
                        month = date.month
                        self.activity_by_month_of_year[month] = self.activity_by_month_of_year.get(month, 0) + 1

                        # yearly/weekly activity
                        yyw = date.strftime('%Y-%W')
                        self.activity_by_year_week[yyw] = self.activity_by_year_week.get(yyw, 0) + 1
                        if self.activity_by_year_week_peak < self.activity_by_year_week[yyw]:
                                self.activity_by_year_week_peak = self.activity_by_year_week[yyw]

                        # author stats
                        if author not in self.authors:
                                self.authors[author] = {}
                        # commits
                        if 'last_commit_stamp' not in self.authors[author]:
                                self.authors[author]['last_commit_stamp'] = stamp
                        self.authors[author]['first_commit_stamp'] = stamp

                        # author of the month/year
                        yymm = date.strftime('%Y-%m')
                        if yymm in self.author_of_month:
                                self.author_of_month[yymm][author] = self.author_of_month[yymm].get(author, 0) + 1
                        else:
                                self.author_of_month[yymm] = {}
                                self.author_of_month[yymm][author] = 1
                        self.commits_by_month[yymm] = self.commits_by_month.get(yymm, 0) + 1

                        yy = date.year
                        if yy in self.author_of_year:
                                self.author_of_year[yy][author] = self.author_of_year[yy].get(author, 0) + 1
                        else:
                                self.author_of_year[yy] = {}
                                self.author_of_year[yy][author] = 1
                        self.commits_by_year[yy] = self.commits_by_year.get(yy, 0) + 1

                        # authors: active days
                        yymmdd = date.strftime('%Y-%m-%d')
                        if 'last_active_day' not in self.authors[author]:
                                self.authors[author]['last_active_day'] = yymmdd
                                self.authors[author]['active_days'] = 1
                        elif yymmdd != self.authors[author]['last_active_day']:
                                self.authors[author]['last_active_day'] = yymmdd
                                self.authors[author]['active_days'] += 1

                        # project: active days
                        if yymmdd != self.last_active_day:
                                self.last_active_day = yymmdd
                                self.active_days.add(yymmdd)

                        # timezone
                        self.commits_by_timezone[timezone] = self.commits_by_timezone.get(timezone, 0) + 1

                # TODO Optimize this, it's the worst bottleneck
                # outputs "<stamp> <files>" for each revision
                self.files_by_stamp = {} # stamp -> files
                revlines = getpipeoutput(['git rev-list --pretty=format:"%%at %%T" %s' % getcommitrange('HEAD'), 'grep -v ^commit']).strip().split('\n')
                lines = []
                for revline in revlines:
                        time, rev = revline.split(' ')
                        linecount = self.getFilesInCommit(rev)
                        lines.append('%d %d' % (int(time), linecount))

                self.total_commits = len(lines)
                for line in lines:
                        parts = line.split(' ')
                        if len(parts) != 2:
                                continue
                        (stamp, files) = parts[0:2]
                        try:
                                self.files_by_stamp[int(stamp)] = int(files)
                        except ValueError:
                                print 'Warning: failed to parse line "%s"' % line

                # extensions
                self.extensions = {} # extension -> files, lines
                lines = getpipeoutput(['git ls-tree -r -z %s' % getcommitrange('HEAD', end_only = True)]).split('\000')
                self.total_files = len(lines)
                for line in lines:
                        if len(line) == 0:
                                continue
                        parts = re.split('\s+', line, 4)
                        sha1 = parts[2]
                        filename = parts[3]

                        if filename.find('.') == -1 or filename.rfind('.') == 0:
                                ext = ''
                        else:
                                ext = filename[(filename.rfind('.') + 1):]
                        if len(ext) > conf['max_ext_length']:
                                ext = ''

                        if ext not in self.extensions:
                                self.extensions[ext] = {'files': 0, 'lines': 0}

                        self.extensions[ext]['files'] += 1
                        try:
                                self.extensions[ext]['lines'] += self.getLinesInBlob(sha1)
                        except:
                                print 'Warning: Could not count lines for file "%s"' % line

                # line statistics
                # outputs:
                #  N files changed, N insertions (+), N deletions(-)
                # <stamp> <author>
                self.changes_by_date = {} # stamp -> { files, ins, del }
                # computation of lines of code by date is better done
                # on a linear history.
                extra = ''
                if conf['linear_linestats']:
                        extra = '--first-parent -m'
                lines = getpipeoutput(['git log --shortstat %s --pretty=format:"%%at %%aN" %s' % (extra, getcommitrange('HEAD'))]).split('\n')
                lines.reverse()
                files = 0; inserted = 0; deleted = 0; total_lines = 0
                author = None
                for line in lines:
                        if len(line) == 0:
                                continue

                        # <stamp> <author>
                        if line.find('files changed,') == -1:
                                pos = line.find(' ')
                                if pos != -1:
                                        try:
                                                (stamp, author) = (int(line[:pos]), line[pos+1:])
                                                self.changes_by_date[stamp] = { 'files': files, 'ins': inserted, 'del': deleted, 'lines': total_lines }
                                                files, inserted, deleted = 0, 0, 0
                                        except ValueError:
                                                print 'Warning: unexpected line "%s"' % line
                                else:
                                        print 'Warning: unexpected line "%s"' % line
                        else:
                                numbers = re.findall('\d+', line)
                                if len(numbers) == 3:
                                        (files, inserted, deleted) = map(lambda el : int(el), numbers)
                                        total_lines += inserted
                                        total_lines -= deleted
                                        self.total_lines_added += inserted
                                        self.total_lines_removed += deleted
                                else:
                                        print 'Warning: failed to handle line "%s"' % line
                                        (files, inserted, deleted) = (0, 0, 0)
                                #self.changes_by_date[stamp] = { 'files': files, 'ins': inserted, 'del': deleted }
                self.total_lines = total_lines

                # Per-author statistics

                # defined for stamp, author only if author commited at this timestamp.
                self.changes_by_date_by_author = {} # stamp -> author -> lines_added

                # Similar to the above, but never use --first-parent
                # (we need to walk through every commit to know who
                # committed what, not just through mainline)
                lines = getpipeoutput(['git log --shortstat --pretty=format:"%%at %%aN" %s' % (getcommitrange('HEAD'))]).split('\n')
                lines.reverse()
                files = 0; inserted = 0; deleted = 0
                author = None
                for line in lines:
                        if len(line) == 0:
                                continue

                        # <stamp> <author>
                        if line.find('files changed,') == -1:
                                pos = line.find(' ')
                                if pos != -1:
                                        try:
                                                (stamp, author) = (int(line[:pos]), line[pos+1:])
                                                if author not in self.authors:
                                                        self.authors[author] = { 'lines_added' : 0, 'lines_removed' : 0, 'commits' : 0}
                                                self.authors[author]['commits'] = self.authors[author].get('commits', 0) + 1
                                                self.authors[author]['lines_added'] = self.authors[author].get('lines_added', 0) + inserted
                                                self.authors[author]['lines_removed'] = self.authors[author].get('lines_removed', 0) + deleted
                                                if stamp not in self.changes_by_date_by_author:
                                                        self.changes_by_date_by_author[stamp] = {}
                                                if author not in self.changes_by_date_by_author[stamp]:
                                                        self.changes_by_date_by_author[stamp][author] = {}
                                                self.changes_by_date_by_author[stamp][author]['lines_added'] = self.authors[author]['lines_added']
                                                self.changes_by_date_by_author[stamp][author]['commits'] = self.authors[author]['commits']
                                                files, inserted, deleted = 0, 0, 0
                                        except ValueError:
                                                print 'Warning: unexpected line "%s"' % line
                                else:
                                        print 'Warning: unexpected line "%s"' % line
                        else:
                                numbers = re.findall('\d+', line)
                                if len(numbers) == 3:
                                        (files, inserted, deleted) = map(lambda el : int(el), numbers)
                                else:
                                        print 'Warning: failed to handle line "%s"' % line
                                        (files, inserted, deleted) = (0, 0, 0)
        
        def refine(self):
                # authors
                # name -> {place_by_commits, commits_frac, date_first, date_last, timedelta}
                authors_by_commits = getkeyssortedbyvaluekey(self.authors, 'commits')
                authors_by_commits.reverse() # most first
                for i, name in enumerate(authors_by_commits):
                        self.authors[name]['place_by_commits'] = i + 1

                for name in self.authors.keys():
                        a = self.authors[name]
                        a['commits_frac'] = (100 * float(a['commits'])) / self.getTotalCommits()
                        date_first = datetime.datetime.fromtimestamp(a['first_commit_stamp'])
                        date_last = datetime.datetime.fromtimestamp(a['last_commit_stamp'])
                        delta = date_last - date_first
                        a['date_first'] = date_first.strftime('%Y-%m-%d')
                        a['date_last'] = date_last.strftime('%Y-%m-%d')
                        a['timedelta'] = delta
                        if 'lines_added' not in a: a['lines_added'] = 0
                        if 'lines_removed' not in a: a['lines_removed'] = 0
        
        def getActiveDays(self):
                return self.active_days

        def getActivityByDayOfWeek(self):
                return self.activity_by_day_of_week

        def getActivityByHourOfDay(self):
                return self.activity_by_hour_of_day

        def getAuthorInfo(self, author):
                return self.authors[author]
        
        def getAuthors(self, limit = None):
                res = getkeyssortedbyvaluekey(self.authors, 'commits')
                res.reverse()
                return res[:limit]
        
        def getCommitDeltaDays(self):
                return (self.last_commit_stamp - self.first_commit_stamp) / 86400 + 1

        def getDomainInfo(self, domain):
                return self.domains[domain]

        def getDomains(self):
                return self.domains.keys()
        
        def getFilesInCommit(self, rev):
                try:
                        res = self.cache['files_in_tree'][rev]
                except:
                        res = int(getpipeoutput(['git ls-tree -r --name-only "%s"' % rev, 'wc -l']).split('\n')[0])
                        if 'files_in_tree' not in self.cache:
                                self.cache['files_in_tree'] = {}
                        self.cache['files_in_tree'][rev] = res

                return res

        def getFirstCommitDate(self):
                return datetime.datetime.fromtimestamp(self.first_commit_stamp)
        
        def getLastCommitDate(self):
                return datetime.datetime.fromtimestamp(self.last_commit_stamp)
        
        def getLinesInBlob(self, sha1):
                try:
                        res = self.cache['lines_in_blob'][sha1]
                except:
                        res = int(getpipeoutput(['git cat-file blob %s' % sha1, 'wc -l']).split()[0])
                        if 'lines_in_blob' not in self.cache:
                                self.cache['lines_in_blob'] = {}
                        self.cache['lines_in_blob'][sha1] = res
                return res

        def getTags(self):
                lines = getpipeoutput(['git show-ref --tags', 'cut -d/ -f3'])
                return lines.split('\n')
        
        def getTagDate(self, tag):
                return self.revToDate('tags/' + tag)
        
        def getTotalAuthors(self):
                return self.total_authors
        
        def getTotalCommits(self):
                return self.total_commits

        def getTotalFiles(self):
                return self.total_files
        
        def getTotalLOC(self):
                return self.total_lines
        
        def revToDate(self, rev):
                stamp = int(getpipeoutput(['git log --pretty=format:%%at "%s" -n 1' % rev]))
                return datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d')

class ReportCreator:
        """Creates the actual report based on given data."""
        def __init__(self):
                pass
        
        def create(self, data, path):
                self.data = data
                self.path = path

def html_linkify(text):
        return text.lower().replace(' ', '_')

def html_header(level, text):
        name = html_linkify(text)
        return '\n<h%d><a href="#%s" name="%s">%s</a></h%d>\n\n' % (level, name, name, text, level)

class HTMLReportCreator(ReportCreator):
        def create(self, data, path):
                ReportCreator.create(self, data, path)
                self.title = data.projectname

                # copy static files. Looks in the binary directory, ../share/gitstats and /usr/share/gitstats
                binarypath = os.path.dirname(os.path.abspath(__file__))
                secondarypath = os.path.join(binarypath, '..', 'share', 'gitstats')
                basedirs = [binarypath, secondarypath, '/usr/share/gitstats']
                for file in ('gitstats.css', 'sortable.js', 'arrow-up.gif', 'arrow-down.gif', 'arrow-none.gif'):
                        for base in basedirs:
                                src = base + '/' + file
                                if os.path.exists(src):
                                        shutil.copyfile(src, path + '/' + file)
                                        break
                        else:
                                print 'Warning: "%s" not found, so not copied (searched: %s)' % (file, basedirs)

                f = open(path + "/index.html", 'w')
                format = '%Y-%m-%d %H:%M:%S'
                self.printHeader(f)

                f.write('<h1>GitStats - %s</h1>' % data.projectname)

                self.printNav(f)

                f.write('<dl>')
                f.write('<dt>Project name</dt><dd>%s</dd>' % (data.projectname))
                f.write('<dt>Generated</dt><dd>%s (in %d seconds)</dd>' % (datetime.datetime.now().strftime(format), time.time() - data.getStampCreated()))
                f.write('<dt>Generator</dt><dd><a href="http://gitstats.sourceforge.net/">GitStats</a> (version %s), %s, %s</dd>' % (getversion(), getgitversion(), getgnuplotversion()))
                f.write('<dt>Report Period</dt><dd>%s to %s</dd>' % (data.getFirstCommitDate().strftime(format), data.getLastCommitDate().strftime(format)))
                f.write('<dt>Age</dt><dd>%d days, %d active days (%3.2f%%)</dd>' % (data.getCommitDeltaDays(), len(data.getActiveDays()), (100.0 * len(data.getActiveDays()) / data.getCommitDeltaDays())))
                f.write('<dt>Total Files</dt><dd>%s</dd>' % data.getTotalFiles())
                f.write('<dt>Total Lines of Code</dt><dd>%s (%d added, %d removed)</dd>' % (data.getTotalLOC(), data.total_lines_added, data.total_lines_removed))
                f.write('<dt>Total Commits</dt><dd>%s (average %.1f commits per active day, %.1f per all days)</dd>' % (data.getTotalCommits(), float(data.getTotalCommits()) / len(data.getActiveDays()), float(data.getTotalCommits()) / data.getCommitDeltaDays()))
                f.write('<dt>Authors</dt><dd>%s (average %.1f commits per author)</dd>' % (data.getTotalAuthors(), (1.0 * data.getTotalCommits()) / data.getTotalAuthors()))
                f.write('</dl>')

                f.write('</body>\n</html>')
                f.close()

                ###
                # Activity
                f = open(path + '/activity.html', 'w')
                self.printHeader(f)
                f.write('<h1>Activity</h1>')
                self.printNav(f)

                #f.write('<h2>Last 30 days</h2>')

                #f.write('<h2>Last 12 months</h2>')

                # Weekly activity
                WEEKS = 32
                f.write(html_header(2, 'Weekly activity'))
                f.write('<p>Last %d weeks</p>' % WEEKS)

                # generate weeks to show (previous N weeks from now)
                now = datetime.datetime.now()
                deltaweek = datetime.timedelta(7)
                weeks = []
                stampcur = now
                for i in range(0, WEEKS):
                        weeks.insert(0, stampcur.strftime('%Y-%W'))
                        stampcur -= deltaweek

                # top row: commits & bar
                f.write('<table class="noborders"><tr>')
                for i in range(0, WEEKS):
                        commits = 0
                        if weeks[i] in data.activity_by_year_week:
                                commits = data.activity_by_year_week[weeks[i]]

                        percentage = 0
                        if weeks[i] in data.activity_by_year_week:
                                percentage = float(data.activity_by_year_week[weeks[i]]) / data.activity_by_year_week_peak
                        height = max(1, int(200 * percentage))
                        f.write('<td style="text-align: center; vertical-align: bottom">%d<div style="display: block; background-color: red; width: 20px; height: %dpx"></div></td>' % (commits, height))

                # bottom row: year/week
                f.write('</tr><tr>')
                for i in range(0, WEEKS):
                        f.write('<td>%s</td>' % (WEEKS - i))
                f.write('</tr></table>')

                # Hour of Day
                f.write(html_header(2, 'Hour of Day'))
                hour_of_day = data.getActivityByHourOfDay()
                f.write('<table><tr><th>Hour</th>')
                for i in range(0, 24):
                        f.write('<th>%d</th>' % i)
                f.write('</tr>\n<tr><th>Commits</th>')
                fp = open(path + '/hour_of_day.dat', 'w')
                for i in range(0, 24):
                        if i in hour_of_day:
                                r = 127 + int((float(hour_of_day[i]) / data.activity_by_hour_of_day_busiest) * 128)
                                f.write('<td style="background-color: rgb(%d, 0, 0)">%d</td>' % (r, hour_of_day[i]))
                                fp.write('%d %d\n' % (i, hour_of_day[i]))
                        else:
                                f.write('<td>0</td>')
                                fp.write('%d 0\n' % i)
                fp.close()
                f.write('</tr>\n<tr><th>%</th>')
                totalcommits = data.getTotalCommits()
                for i in range(0, 24):
                        if i in hour_of_day:
                                r = 127 + int((float(hour_of_day[i]) / data.activity_by_hour_of_day_busiest) * 128)
                                f.write('<td style="background-color: rgb(%d, 0, 0)">%.2f</td>' % (r, (100.0 * hour_of_day[i]) / totalcommits))
                        else:
                                f.write('<td>0.00</td>')
                f.write('</tr></table>')
                f.write('<img src="hour_of_day.png" alt="Hour of Day" />')
                fg = open(path + '/hour_of_day.dat', 'w')
                for i in range(0, 24):
                        if i in hour_of_day:
                                fg.write('%d %d\n' % (i + 1, hour_of_day[i]))
                        else:
                                fg.write('%d 0\n' % (i + 1))
                fg.close()

                # Day of Week
                f.write(html_header(2, 'Day of Week'))
                day_of_week = data.getActivityByDayOfWeek()
                f.write('<div class="vtable"><table>')
                f.write('<tr><th>Day</th><th>Total (%)</th></tr>')
                fp = open(path + '/day_of_week.dat', 'w')
                for d in range(0, 7):
                        commits = 0
                        if d in day_of_week:
                                commits = day_of_week[d]
                        fp.write('%d %s %d\n' % (d + 1, WEEKDAYS[d], commits))
                        f.write('<tr>')
                        f.write('<th>%s</th>' % (WEEKDAYS[d]))
                        if d in day_of_week:
                                f.write('<td>%d (%.2f%%)</td>' % (day_of_week[d], (100.0 * day_of_week[d]) / totalcommits))
                        else:
                                f.write('<td>0</td>')
                        f.write('</tr>')
                f.write('</table></div>')
                f.write('<img src="day_of_week.png" alt="Day of Week" />')
                fp.close()

                # Hour of Week
                f.write(html_header(2, 'Hour of Week'))
                f.write('<table>')

                f.write('<tr><th>Weekday</th>')
                for hour in range(0, 24):
                        f.write('<th>%d</th>' % (hour))
                f.write('</tr>')

                for weekday in range(0, 7):
                        f.write('<tr><th>%s</th>' % (WEEKDAYS[weekday]))
                        for hour in range(0, 24):
                                try:
                                        commits = data.activity_by_hour_of_week[weekday][hour]
                                except KeyError:
                                        commits = 0
                                if commits != 0:
                                        f.write('<td')
                                        r = 127 + int((float(commits) / data.activity_by_hour_of_week_busiest) * 128)
                                        f.write(' style="background-color: rgb(%d, 0, 0)"' % r)
                                        f.write('>%d</td>' % commits)
                                else:
                                        f.write('<td></td>')
                        f.write('</tr>')

                f.write('</table>')

                # Month of Year
                f.write(html_header(2, 'Month of Year'))
                f.write('<div class="vtable"><table>')
                f.write('<tr><th>Month</th><th>Commits (%)</th></tr>')
                fp = open (path + '/month_of_year.dat', 'w')
                for mm in range(1, 13):
                        commits = 0
                        if mm in data.activity_by_month_of_year:
                                commits = data.activity_by_month_of_year[mm]
                        f.write('<tr><td>%d</td><td>%d (%.2f %%)</td></tr>' % (mm, commits, (100.0 * commits) / data.getTotalCommits()))
                        fp.write('%d %d\n' % (mm, commits))
                fp.close()
                f.write('</table></div>')
                f.write('<img src="month_of_year.png" alt="Month of Year" />')

                # Commits by year/month
                f.write(html_header(2, 'Commits by year/month'))
                f.write('<div class="vtable"><table><tr><th>Month</th><th>Commits</th></tr>')
                for yymm in reversed(sorted(data.commits_by_month.keys())):
                        f.write('<tr><td>%s</td><td>%d</td></tr>' % (yymm, data.commits_by_month[yymm]))
                f.write('</table></div>')
                f.write('<img src="commits_by_year_month.png" alt="Commits by year/month" />')
                fg = open(path + '/commits_by_year_month.dat', 'w')
                for yymm in sorted(data.commits_by_month.keys()):
                        fg.write('%s %s\n' % (yymm, data.commits_by_month[yymm]))
                fg.close()

                # Commits by year
                f.write(html_header(2, 'Commits by Year'))
                f.write('<div class="vtable"><table><tr><th>Year</th><th>Commits (% of all)</th></tr>')
                for yy in reversed(sorted(data.commits_by_year.keys())):
                        f.write('<tr><td>%s</td><td>%d (%.2f%%)</td></tr>' % (yy, data.commits_by_year[yy], (100.0 * data.commits_by_year[yy]) / data.getTotalCommits()))
                f.write('</table></div>')
                f.write('<img src="commits_by_year.png" alt="Commits by Year" />')
                fg = open(path + '/commits_by_year.dat', 'w')
                for yy in sorted(data.commits_by_year.keys()):
                        fg.write('%d %d\n' % (yy, data.commits_by_year[yy]))
                fg.close()

                # Commits by timezone
                f.write(html_header(2, 'Commits by Timezone'))
                f.write('<table><tr>')
                f.write('<th>Timezone</th><th>Commits</th>')
                max_commits_on_tz = max(data.commits_by_timezone.values())
                for i in sorted(data.commits_by_timezone.keys(), key = lambda n : int(n)):
                        commits = data.commits_by_timezone[i]
                        r = 127 + int((float(commits) / max_commits_on_tz) * 128)
                        f.write('<tr><th>%s</th><td style="background-color: rgb(%d, 0, 0)">%d</td></tr>' % (i, r, commits))
                f.write('</tr></table>')

                f.write('</body></html>')
                f.close()

                ###
                # Authors
                f = open(path + '/authors.html', 'w')
                self.printHeader(f)

                f.write('<h1>Authors</h1>')
                self.printNav(f)

                # Authors :: List of authors
                f.write(html_header(2, 'List of Authors'))

                f.write('<table class="authors sortable" id="authors">')
                f.write('<tr><th>Author</th><th>Commits (%)</th><th>+ lines</th><th>- lines</th><th>First commit</th><th>Last commit</th><th class="unsortable">Age</th><th>Active days</th><th># by commits</th></tr>')
                for author in data.getAuthors(conf['max_authors']):
                        info = data.getAuthorInfo(author)
                        f.write('<tr><td>%s</td><td>%d (%.2f%%)</td><td>%d</td><td>%d</td><td>%s</td><td>%s</td><td>%s</td><td>%d</td><td>%d</td></tr>' % (author, info['commits'], info['commits_frac'], info['lines_added'], info['lines_removed'], info['date_first'], info['date_last'], info['timedelta'], info['active_days'], info['place_by_commits']))
                f.write('</table>')

                allauthors = data.getAuthors()
                if len(allauthors) > conf['max_authors']:
                        rest = allauthors[conf['max_authors']:]
                        f.write('<p class="moreauthors">These didn\'t make it to the top: %s</p>' % ', '.join(rest))

                f.write(html_header(2, 'Cumulated Added Lines of Code per Author'))
                f.write('<img src="lines_of_code_by_author.png" alt="Lines of code per Author" />')
                if len(allauthors) > conf['max_authors']:
                        f.write('<p class="moreauthors">Only top %d authors shown</p>' % conf['max_authors'])

                f.write(html_header(2, 'Commits per Author'))
                f.write('<img src="commits_by_author.png" alt="Commits per Author" />')
                if len(allauthors) > conf['max_authors']:
                        f.write('<p class="moreauthors">Only top %d authors shown</p>' % conf['max_authors'])

                fgl = open(path + '/lines_of_code_by_author.dat', 'w')
                fgc = open(path + '/commits_by_author.dat', 'w')

                lines_by_authors = {} # cumulated added lines by
                # author. to save memory,
                # changes_by_date_by_author[stamp][author] is defined
                # only at points where author commits.
                # lines_by_authors allows us to generate all the
                # points in the .dat file.

                # Don't rely on getAuthors to give the same order each
                # time. Be robust and keep the list in a variable.
                commits_by_authors = {} # cumulated added lines by

                self.authors_to_plot = data.getAuthors(conf['max_authors'])
                for author in self.authors_to_plot:
                        lines_by_authors[author] = 0
                        commits_by_authors[author] = 0
                for stamp in sorted(data.changes_by_date_by_author.keys()):
                        fgl.write('%d' % stamp)
                        fgc.write('%d' % stamp)
                        for author in self.authors_to_plot:
                                if author in data.changes_by_date_by_author[stamp].keys():
                                        lines_by_authors[author] = data.changes_by_date_by_author[stamp][author]['lines_added']
                                        commits_by_authors[author] = data.changes_by_date_by_author[stamp][author]['commits']
                                fgl.write(' %d' % lines_by_authors[author])
                                fgc.write(' %d' % commits_by_authors[author])
                        fgl.write('\n')
                        fgc.write('\n')
                fgl.close()
                fgc.close()

                # Authors :: Author of Month
                f.write(html_header(2, 'Author of Month'))
                f.write('<table class="sortable" id="aom">')
                f.write('<tr><th>Month</th><th>Author</th><th>Commits (%%)</th><th class="unsortable">Next top %d</th><th>Number of authors</th></tr>' % conf['authors_top'])
                for yymm in reversed(sorted(data.author_of_month.keys())):
                        authordict = data.author_of_month[yymm]
                        authors = getkeyssortedbyvalues(authordict)
                        authors.reverse()
                        commits = data.author_of_month[yymm][authors[0]]
                        next = ', '.join(authors[1:conf['authors_top']+1])
                        f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td><td>%d</td></tr>' % (yymm, authors[0], commits, (100.0 * commits) / data.commits_by_month[yymm], data.commits_by_month[yymm], next, len(authors)))

                f.write('</table>')

                f.write(html_header(2, 'Author of Year'))
                f.write('<table class="sortable" id="aoy"><tr><th>Year</th><th>Author</th><th>Commits (%%)</th><th class="unsortable">Next top %d</th><th>Number of authors</th></tr>' % conf['authors_top'])
                for yy in reversed(sorted(data.author_of_year.keys())):
                        authordict = data.author_of_year[yy]
                        authors = getkeyssortedbyvalues(authordict)
                        authors.reverse()
                        commits = data.author_of_year[yy][authors[0]]
                        next = ', '.join(authors[1:conf['authors_top']+1])
                        f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td><td>%d</td></tr>' % (yy, authors[0], commits, (100.0 * commits) / data.commits_by_year[yy], data.commits_by_year[yy], next, len(authors)))
                f.write('</table>')

                # Domains
                f.write(html_header(2, 'Commits by Domains'))
                domains_by_commits = getkeyssortedbyvaluekey(data.domains, 'commits')
                domains_by_commits.reverse() # most first
                f.write('<div class="vtable"><table>')
                f.write('<tr><th>Domains</th><th>Total (%)</th></tr>')
                fp = open(path + '/domains.dat', 'w')
                n = 0
                for domain in domains_by_commits:
                        if n == conf['max_domains']:
                                break
                        commits = 0
                        n += 1
                        info = data.getDomainInfo(domain)
                        fp.write('%s %d %d\n' % (domain, n , info['commits']))
                        f.write('<tr><th>%s</th><td>%d (%.2f%%)</td></tr>' % (domain, info['commits'], (100.0 * info['commits'] / totalcommits)))
                f.write('</table></div>')
                f.write('<img src="domains.png" alt="Commits by Domains" />')
                fp.close()

                f.write('</body></html>')
                f.close()

                ###
                # Files
                f = open(path + '/files.html', 'w')
                self.printHeader(f)
                f.write('<h1>Files</h1>')
                self.printNav(f)

                f.write('<dl>\n')
                f.write('<dt>Total files</dt><dd>%d</dd>' % data.getTotalFiles())
                f.write('<dt>Total lines</dt><dd>%d</dd>' % data.getTotalLOC())
                f.write('<dt>Average file size</dt><dd>%.2f bytes</dd>' % ((100.0 * data.getTotalLOC()) / data.getTotalFiles()))
                f.write('</dl>\n')

                # Files :: File count by date
                f.write(html_header(2, 'File count by date'))

                # use set to get rid of duplicate/unnecessary entries
                files_by_date = set()
                for stamp in sorted(data.files_by_stamp.keys()):
                        files_by_date.add('%s %d' % (datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d'), data.files_by_stamp[stamp]))

                fg = open(path + '/files_by_date.dat', 'w')
                for line in sorted(list(files_by_date)):
                        fg.write('%s\n' % line)
                #for stamp in sorted(data.files_by_stamp.keys()):
                #       fg.write('%s %d\n' % (datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d'), data.files_by_stamp[stamp]))
                fg.close()
                        
                f.write('<img src="files_by_date.png" alt="Files by Date" />')

                #f.write('<h2>Average file size by date</h2>')

                # Files :: Extensions
                f.write(html_header(2, 'Extensions'))
                f.write('<table class="sortable" id="ext"><tr><th>Extension</th><th>Files (%)</th><th>Lines (%)</th><th>Lines/file</th></tr>')
                for ext in sorted(data.extensions.keys()):
                        files = data.extensions[ext]['files']
                        lines = data.extensions[ext]['lines']
                        f.write('<tr><td>%s</td><td>%d (%.2f%%)</td><td>%d (%.2f%%)</td><td>%d</td></tr>' % (ext, files, (100.0 * files) / data.getTotalFiles(), lines, (100.0 * lines) / data.getTotalLOC(), lines / files))
                f.write('</table>')

                f.write('</body></html>')
                f.close()

                ###
                # Lines
                f = open(path + '/lines.html', 'w')
                self.printHeader(f)
                f.write('<h1>Lines</h1>')
                self.printNav(f)

                f.write('<dl>\n')
                f.write('<dt>Total lines</dt><dd>%d</dd>' % data.getTotalLOC())
                f.write('</dl>\n')

                f.write(html_header(2, 'Lines of Code'))
                f.write('<img src="lines_of_code.png" />')

                fg = open(path + '/lines_of_code.dat', 'w')
                for stamp in sorted(data.changes_by_date.keys()):
                        fg.write('%d %d\n' % (stamp, data.changes_by_date[stamp]['lines']))
                fg.close()

                f.write('</body></html>')
                f.close()

                ###
                # tags.html
                f = open(path + '/tags.html', 'w')
                self.printHeader(f)
                f.write('<h1>Tags</h1>')
                self.printNav(f)

                f.write('<dl>')
                f.write('<dt>Total tags</dt><dd>%d</dd>' % len(data.tags))
                if len(data.tags) > 0:
                        f.write('<dt>Average commits per tag</dt><dd>%.2f</dd>' % (1.0 * data.getTotalCommits() / len(data.tags)))
                f.write('</dl>')

                f.write('<table class="tags">')
                f.write('<tr><th>Name</th><th>Date</th><th>Commits</th><th>Authors</th></tr>')
                # sort the tags by date desc
                tags_sorted_by_date_desc = map(lambda el : el[1], reversed(sorted(map(lambda el : (el[1]['date'], el[0]), data.tags.items()))))
                for tag in tags_sorted_by_date_desc:
                        authorinfo = []
                        authors_by_commits = getkeyssortedbyvalues(data.tags[tag]['authors'])
                        for i in reversed(authors_by_commits):
                                authorinfo.append('%s (%d)' % (i, data.tags[tag]['authors'][i]))
                        f.write('<tr><td>%s</td><td>%s</td><td>%d</td><td>%s</td></tr>' % (tag, data.tags[tag]['date'], data.tags[tag]['commits'], ', '.join(authorinfo)))
                f.write('</table>')

                f.write('</body></html>')
                f.close()

                self.createGraphs(path)
        
        def createGraphs(self, path):
                print 'Generating graphs...'

                # hour of day
                f = open(path + '/hour_of_day.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'hour_of_day.png'
unset key
set xrange [0.5:24.5]
set xtics 4
set grid y
set ylabel "Commits"
plot 'hour_of_day.dat' using 1:2:(0.5) w boxes fs solid
""")
                f.close()

                # day of week
                f = open(path + '/day_of_week.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'day_of_week.png'
unset key
set xrange [0.5:7.5]
set xtics 1
set grid y
set ylabel "Commits"
plot 'day_of_week.dat' using 1:3:(0.5):xtic(2) w boxes fs solid
""")
                f.close()

                # Domains
                f = open(path + '/domains.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'domains.png'
unset key
unset xtics
set yrange [0:]
set grid y
set ylabel "Commits"
plot 'domains.dat' using 2:3:(0.5) with boxes fs solid, '' using 2:3:1 with labels rotate by 45 offset 0,1
""")
                f.close()

                # Month of Year
                f = open(path + '/month_of_year.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'month_of_year.png'
unset key
set xrange [0.5:12.5]
set xtics 1
set grid y
set ylabel "Commits"
plot 'month_of_year.dat' using 1:2:(0.5) w boxes fs solid
""")
                f.close()

                # commits_by_year_month
                f = open(path + '/commits_by_year_month.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'commits_by_year_month.png'
unset key
set xdata time
set timefmt "%Y-%m"
set format x "%Y-%m"
set xtics rotate
set bmargin 5
set grid y
set ylabel "Commits"
plot 'commits_by_year_month.dat' using 1:2:(0.5) w boxes fs solid
""")
                f.close()

                # commits_by_year
                f = open(path + '/commits_by_year.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'commits_by_year.png'
unset key
set xtics 1 rotate
set grid y
set ylabel "Commits"
set yrange [0:]
plot 'commits_by_year.dat' using 1:2:(0.5) w boxes fs solid
""")
                f.close()

                # Files by date
                f = open(path + '/files_by_date.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'files_by_date.png'
unset key
set xdata time
set timefmt "%Y-%m-%d"
set format x "%Y-%m-%d"
set grid y
set ylabel "Files"
set xtics rotate
set ytics autofreq
set bmargin 6
plot 'files_by_date.dat' using 1:2 w steps
""")
                f.close()

                # Lines of Code
                f = open(path + '/lines_of_code.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set output 'lines_of_code.png'
unset key
set xdata time
set timefmt "%s"
set format x "%Y-%m-%d"
set grid y
set ylabel "Lines"
set xtics rotate
set bmargin 6
plot 'lines_of_code.dat' using 1:2 w lines
""")
                f.close()

                # Lines of Code Added per author
                f = open(path + '/lines_of_code_by_author.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set terminal png transparent size 640,480
set output 'lines_of_code_by_author.png'
set key left top
set xdata time
set timefmt "%s"
set format x "%Y-%m-%d"
set grid y
set ylabel "Lines"
set xtics rotate
set bmargin 6
plot """
)
                i = 1
                plots = []
                for a in self.authors_to_plot:
                        i = i + 1
                        plots.append("""'lines_of_code_by_author.dat' using 1:%d title "%s" w lines""" % (i, a.replace("\"", "\\\"")))
                f.write(", ".join(plots))
                f.write('\n')

                f.close()

                # Commits per author
                f = open(path + '/commits_by_author.plot', 'w')
                f.write(GNUPLOT_COMMON)
                f.write(
"""
set terminal png transparent size 640,480
set output 'commits_by_author.png'
set key left top
set xdata time
set timefmt "%s"
set format x "%Y-%m-%d"
set grid y
set ylabel "Commits"
set xtics rotate
set bmargin 6
plot """
)
                i = 1
                plots = []
                for a in self.authors_to_plot:
                        i = i + 1
                        plots.append("""'commits_by_author.dat' using 1:%d title "%s" w lines""" % (i, a.replace("\"", "\\\"")))
                f.write(", ".join(plots))
                f.write('\n')

                f.close()

                os.chdir(path)
                files = glob.glob(path + '/*.plot')
                for f in files:
                        out = getpipeoutput([gnuplot_cmd + ' "%s"' % f])
                        if len(out) > 0:
                                print out

        def printHeader(self, f, title = ''):
                f.write(
"""<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
        <title>GitStats - %s</title>
        <link rel="stylesheet" href="%s" type="text/css" />
        <meta name="generator" content="GitStats %s" />
        <script type="text/javascript" src="sortable.js"></script>
</head>
<body>
""" % (self.title, conf['style'], getversion()))

        def printNav(self, f):
                f.write("""
<div class="nav">
<ul>
<li><a href="index.html">General</a></li>
<li><a href="activity.html">Activity</a></li>
<li><a href="authors.html">Authors</a></li>
<li><a href="files.html">Files</a></li>
<li><a href="lines.html">Lines</a></li>
<li><a href="tags.html">Tags</a></li>
</ul>
</div>
""")
                

class GitStats:
        def run(self, args_orig):
                optlist, args = getopt.getopt(args_orig, 'c:')
                for o,v in optlist:
                        if o == '-c':
                                key, value = v.split('=', 1)
                                if key not in conf:
                                        raise KeyError('no such key "%s" in config' % key)
                                if isinstance(conf[key], int):
                                        conf[key] = int(value)
                                else:
                                        conf[key] = value

                if len(args) < 2:
                        print """
Usage: gitstats [options] <gitpath> <outputpath>

Options:
-c key=value     Override configuration value

Default config values:
%s
""" % conf
                        sys.exit(0)

                gitpath = args[0]
                outputpath = os.path.abspath(args[1])
                rundir = os.getcwd()

                try:
                        os.makedirs(outputpath)
                except OSError:
                        pass
                if not os.path.isdir(outputpath):
                        print 'FATAL: Output path is not a directory or does not exist'
                        sys.exit(1)

                print 'Git path: %s' % gitpath
                print 'Output path: %s' % outputpath

                os.chdir(gitpath)

                cachefile = os.path.join(outputpath, 'gitstats.cache')

                print 'Collecting data...'
                data = GitDataCollector()
                data.loadCache(cachefile)
                data.collect(gitpath)
                print 'Refining data...'
                data.saveCache(cachefile)
                data.refine()

                os.chdir(rundir)

                print 'Generating report...'
                report = HTMLReportCreator()
                report.create(data, outputpath)

                time_end = time.time()
                exectime_internal = time_end - time_start
                print 'Execution time %.5f secs, %.5f secs (%.2f %%) in external commands)' % (exectime_internal, exectime_external, (100.0 * exectime_external) / exectime_internal)

if __name__=='__main__':
        g = GitStats()
        g.run(sys.argv[1:])