/brz/remove-bazaar

"""A Simple bzr plugin to generate statistics about the history."""

import re

from bzrlib.lazy_import import lazy_import

lazy_import(globals(), """

from bzrlib import (

    branch,

    commands,

    config,

    errors,

    option,

    tsort,

    ui,

    workingtree,

    )

from bzrlib.plugins.stats.classify import classify_delta

from itertools import izip

""")

def find_fullnames(lst):

    """Find the fullnames for a list committer names."""

    counts = {}

    for committer in lst:

        fullname = config.parse_username(committer)[0]

        counts.setdefault(fullname, 0)

        counts[fullname] += 1

    return sorted(((count, name) for name,count in counts.iteritems()), reverse=True)

def collapse_by_person(committers):

    """The committers list is sorted by email, fix it up by person.

    Some people commit with a similar username, but different email

    address. Which makes it hard to sort out when they have multiple

    entries. Email is actually more stable, though, since people

    frequently forget to set their name properly.

    So take the most common username for each email address, and

    combine them into one new list.

    """

    # Just an indirection so that multiple names can reference

    # the same record information

    name_to_counter = {}

    # indirection back to real information

    # [[full_rev_list], {email:count}, {fname:count}]

    counter_to_info = {}

    counter = 0

    for email, revs in committers.iteritems():

        fullnames = find_fullnames(rev.get_apparent_author() for rev in revs)

        match = None

        for count, fullname in fullnames:

            if fullname and fullname in name_to_counter:

                # We found a match

                match = name_to_counter[fullname]

                break

        if match:

            # One of the names matched, we need to collapse to records

            record = counter_to_info[match]

            record[0].extend(revs)

            record[1][email] = len(revs)

            for count, fullname in fullnames:

                name_to_counter[fullname] = match

                record[2].setdefault(fullname, 0)

                record[2][fullname] += count

        else:

            # just add this one to the list

            counter += 1

            for count, fullname in fullnames:

                if fullname:

                    name_to_counter[fullname] = counter

            fname_map = dict((fullname, count) for count, fullname in fullnames)

            counter_to_info[counter] = [revs, {email:len(revs)}, fname_map]

    return sorted(((len(revs), revs, email, fname)

            for revs, email, fname in counter_to_info.values()), reverse=True)

def sort_by_committer(a_repo, revids):

    committers = {}

    pb = ui.ui_factory.nested_progress_bar()

    try:

        pb.note('getting revisions')

        revisions = a_repo.get_revisions(revids)

        for count, rev in enumerate(revisions):

            pb.update('checking', count, len(revids))

            email = config.parse_username(rev.get_apparent_author())[1]

            committers.setdefault(email, []).append(rev)

    finally:

        pb.finished()

    return committers

def get_info(a_repo, revision):

    """Get all of the information for a particular revision"""

    pb = ui.ui_factory.nested_progress_bar()

    a_repo.lock_read()

    try:

        pb.note('getting ancestry')

        ancestry = a_repo.get_ancestry(revision)[1:]

        committers = sort_by_committer(a_repo, ancestry)

    finally:

        a_repo.unlock()

        pb.finished()

    return collapse_by_person(committers)

def get_diff_info(a_repo, start_rev, end_rev):

    """Get only the info for new revisions between the two revisions

    This lets us figure out what has actually changed between 2 revisions.

    """

    pb = ui.ui_factory.nested_progress_bar()

    committers = {}

    a_repo.lock_read()

    try:

        pb.note('getting ancestry 1')

        start_ancestry = set(a_repo.get_ancestry(start_rev))

        pb.note('getting ancestry 2')

        ancestry = a_repo.get_ancestry(end_rev)[1:]

        ancestry = [rev for rev in ancestry if rev not in start_ancestry]

        pb.note('getting revisions')

        revisions = a_repo.get_revisions(ancestry)

        for count, rev in enumerate(revisions):

            pb.update('checking', count, len(ancestry))

            try:

                email = config.extract_email_address(rev.get_apparent_author())

            except errors.BzrError:

                email = rev.get_apparent_author()

            committers.setdefault(email, []).append(rev)

    finally:

        a_repo.unlock()

        pb.finished()

    info = collapse_by_person(committers)

    return info

def display_info(info, to_file, gather_class_stats=None):

    """Write out the information"""

    for count, revs, emails, fullnames in info:

        # Get the most common email name

        sorted_emails = sorted(((count, email)

                               for email,count in emails.iteritems()),

                               reverse=True)

        sorted_fullnames = sorted(((count, fullname)

                                  for fullname,count in fullnames.iteritems()),

                                  reverse=True)

        to_file.write('%4d %s <%s>\n'

                      % (count, sorted_fullnames[0][1],

                         sorted_emails[0][1]))

        if len(sorted_fullnames) > 1:

            print '     Other names:'

            for count, fname in sorted_fullnames[1:]:

                to_file.write('     %4d ' % (count,))

                if fname == '':

                    to_file.write("''\n")

                else:

                    to_file.write("%s\n" % (fname,))

        if len(sorted_emails) > 1:

            print '     Other email addresses:'

            for count, email in sorted_emails:

                to_file.write('     %4d ' % (count,))

                if email == '':

                    to_file.write("''\n")

                else:

                    to_file.write("%s\n" % (email,))

        if gather_class_stats is not None:

            print '     Contributions:'

            classes, total = gather_class_stats(revs)

            for name,count in sorted(classes.items(), lambda x,y: cmp((x[1], x[0]), (y[1], y[0]))):

                if name is None:

                    name = "Unknown"

                to_file.write("     %4.0f%% %s\n" % ((float(count) / total) * 100.0, name))

class cmd_committer_statistics(commands.Command):

    """Generate statistics for LOCATION."""

    aliases = ['stats', 'committer-stats']

    takes_args = ['location?']

    takes_options = ['revision', 

            option.Option('show-class', help="Show the class of contributions")]

    encoding_type = 'replace'

    def run(self, location='.', revision=None, show_class=False):

        alternate_rev = None

        try:

            wt = workingtree.WorkingTree.open_containing(location)[0]

        except errors.NoWorkingTree:

            a_branch = branch.Branch.open(location)

            last_rev = a_branch.last_revision()

        else:

            a_branch = wt.branch

            last_rev = wt.last_revision()

        if revision is not None:

            last_rev = revision[0].in_history(a_branch).rev_id

            if len(revision) > 1:

                alternate_rev = revision[1].in_history(a_branch).rev_id

        a_branch.lock_read()

        try:

            if alternate_rev:

                info = get_diff_info(a_branch.repository, last_rev,

                                     alternate_rev)

            else:

                info = get_info(a_branch.repository, last_rev)

        finally:

            a_branch.unlock()

        def fetch_class_stats(revs):

            return gather_class_stats(a_branch.repository, revs)

        display_info(info, self.outf, fetch_class_stats if show_class else None)

commands.register_command(cmd_committer_statistics)

class cmd_ancestor_growth(commands.Command):

    """Figure out the ancestor graph for LOCATION"""

    takes_args = ['location?']

    encoding_type = 'replace'

    def run(self, location='.'):

        try:

            wt = workingtree.WorkingTree.open_containing(location)[0]

        except errors.NoWorkingTree:

            a_branch = branch.Branch.open(location)

            last_rev = a_branch.last_revision()

        else:

            a_branch = wt.branch

            last_rev = wt.last_revision()

        a_branch.lock_read()

        try:

            graph = a_branch.repository.get_revision_graph(last_rev)

        finally:

            a_branch.unlock()

        revno = 0

        cur_parents = 0

        sorted_graph = tsort.merge_sort(graph.iteritems(), last_rev)

        for num, node_name, depth, isend in reversed(sorted_graph):

            cur_parents += 1

            if depth == 0:

                revno += 1

                self.outf.write('%4d, %4d\n' % (revno, cur_parents))

commands.register_command(cmd_ancestor_growth)

def gather_class_stats(repository, revs):

    ret = {}

    total = 0

    pb = ui.ui_factory.nested_progress_bar()

    try:

        repository.lock_read()

        try:

            i = 0

            for delta in repository.get_deltas_for_revisions(revs):

                pb.update("classifying commits", i, len(revs))

                for c in classify_delta(delta):

                    if not c in ret:

                        ret[c] = 0

                    ret[c] += 1

                    total += 1

                i += 1

        finally:

            repository.unlock()

    finally:

        pb.finished()

    return ret, total

def display_credits(credits):

    (coders, documenters, artists, translators) = credits

    def print_section(name, lst):

        if len(lst) == 0:

            return

        print "%s:" % name

        for name in lst:

            print "%s" % name

        print ""

    print_section("Code", coders)

    print_section("Documentation", documenters)

    print_section("Art", artists)

    print_section("Translations", translators)

def find_credits(repository, revid):

    """Find the credits of the contributors to a revision.

    :return: tuple with (authors, documenters, artists, translators)

    """

    ret = {"documentation": {},

           "code": {},

           "art": {},

           "translation": {},

           None: {}

           }

    repository.lock_read()

    try:

        ancestry = filter(lambda x: x is not None, repository.get_ancestry(revid))

        revs = repository.get_revisions(ancestry)

        pb = ui.ui_factory.nested_progress_bar()

        try:

            for i, (rev,delta) in enumerate(izip(revs, repository.get_deltas_for_revisions(revs))):

                pb.update("analysing revisions", i, len(revs))

                # Don't count merges

                if len(rev.parent_ids) > 1:

                    continue

                for c in set(classify_delta(delta)):

                    author = rev.get_apparent_author()

                    if not author in ret[c]:

                        ret[c][author] = 0

                    ret[c][author] += 1

        finally:

            pb.finished()

    finally:

        repository.unlock()

    def sort_class(name):

        return map(lambda (x,y): x, 

               sorted(ret[name].items(), lambda x,y: cmp((x[1], x[0]), (y[1], y[0])), reverse=True))

    return (sort_class("code"), sort_class("documentation"), sort_class("art"), sort_class("translation"))

class cmd_credits(commands.Command):

    """Determine credits for LOCATION."""

    takes_args = ['location?']

    takes_options = ['revision']

    encoding_type = 'replace'

    def run(self, location='.', revision=None):

        try:

            wt = workingtree.WorkingTree.open_containing(location)[0]

        except errors.NoWorkingTree:

            a_branch = branch.Branch.open(location)

            last_rev = a_branch.last_revision()

        else:

            a_branch = wt.branch

            last_rev = wt.last_revision()

        if revision is not None:

            last_rev = revision[0].in_history(a_branch).rev_id

        a_branch.lock_read()

        try:

            credits = find_credits(a_branch.repository, last_rev)

            display_credits(credits)

        finally:

            a_branch.unlock()

commands.register_command(cmd_credits)

def test_suite():

    from unittest import TestSuite

    from bzrlib.tests import TestLoader

    suite = TestSuite()

    loader = TestLoader()

    testmod_names = [ 'test_classify']

    suite.addTest(loader.loadTestsFromModuleNames(['%s.%s' % (__name__, i) for i in testmod_names]))

    return suite