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# churn.py - create a graph showing who changed the most lines
#
# Copyright 2006 Josef "Jeff" Sipek <jeffpc@josefsipek.net>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
#
#
# Aliases map file format is simple one alias per line in the following
# format:
#
# <alias email> <actual email>
from mercurial.i18n import gettext as _
from mercurial import hg, mdiff, cmdutil, ui, util, templater, node
import os, sys
def get_tty_width():
if 'COLUMNS' in os.environ:
try:
return int(os.environ['COLUMNS'])
except ValueError:
pass
try:
import termios, array, fcntl
for dev in (sys.stdout, sys.stdin):
try:
fd = dev.fileno()
if not os.isatty(fd):
continue
arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8)
return array.array('h', arri)[1]
except ValueError:
pass
except ImportError:
pass
return 80
def __gather(ui, repo, node1, node2):
def dirtywork(f, mmap1, mmap2):
lines = 0
to = mmap1 and repo.file(f).read(mmap1[f]) or None
tn = mmap2 and repo.file(f).read(mmap2[f]) or None
diff = mdiff.unidiff(to, "", tn, "", f).split("\n")
for line in diff:
if not line:
continue # skip EOF
if line.startswith(" "):
continue # context line
if line.startswith("--- ") or line.startswith("+++ "):
continue # begining of diff
if line.startswith("@@ "):
continue # info line
# changed lines
lines += 1
return lines
##
lines = 0
changes = repo.status(node1, node2, None, util.always)[:5]
modified, added, removed, deleted, unknown = changes
who = repo.changelog.read(node2)[1]
who = templater.email(who) # get the email of the person
mmap1 = repo.manifest.read(repo.changelog.read(node1)[0])
mmap2 = repo.manifest.read(repo.changelog.read(node2)[0])
for f in modified:
lines += dirtywork(f, mmap1, mmap2)
for f in added:
lines += dirtywork(f, None, mmap2)
for f in removed:
lines += dirtywork(f, mmap1, None)
for f in deleted:
lines += dirtywork(f, mmap1, mmap2)
for f in unknown:
lines += dirtywork(f, mmap1, mmap2)
return (who, lines)
def gather_stats(ui, repo, amap, revs=None, progress=False):
stats = {}
cl = repo.changelog
if not revs:
revs = range(0, cl.count())
nr_revs = len(revs)
cur_rev = 0
for rev in revs:
cur_rev += 1 # next revision
node2 = cl.node(rev)
node1 = cl.parents(node2)[0]
if cl.parents(node2)[1] != node.nullid:
ui.note(_('Revision %d is a merge, ignoring...\n') % (rev,))
continue
who, lines = __gather(ui, repo, node1, node2)
# remap the owner if possible
if amap.has_key(who):
ui.note("using '%s' alias for '%s'\n" % (amap[who], who))
who = amap[who]
if not stats.has_key(who):
stats[who] = 0
stats[who] += lines
ui.note("rev %d: %d lines by %s\n" % (rev, lines, who))
if progress:
if int(100.0*(cur_rev - 1)/nr_revs) < int(100.0*cur_rev/nr_revs):
ui.write("%d%%.." % (int(100.0*cur_rev/nr_revs),))
sys.stdout.flush()
if progress:
ui.write("done\n")
sys.stdout.flush()
return stats
def churn(ui, repo, **opts):
"Graphs the number of lines changed"
def pad(s, l):
if len(s) < l:
return s + " " * (l-len(s))
return s[0:l]
def graph(n, maximum, width, char):
n = int(n * width / float(maximum))
return char * (n)
def get_aliases(f):
aliases = {}
for l in f.readlines():
l = l.strip()
alias, actual = l.split(" ")
aliases[alias] = actual
return aliases
amap = {}
aliases = opts.get('aliases')
if aliases:
try:
f = open(aliases,"r")
except OSError, e:
print "Error: " + e
return
amap = get_aliases(f)
f.close()
revs = [int(r) for r in cmdutil.revrange(repo, opts['rev'])]
revs.sort()
stats = gather_stats(ui, repo, amap, revs, opts.get('progress'))
# make a list of tuples (name, lines) and sort it in descending order
ordered = stats.items()
ordered.sort(lambda x, y: cmp(y[1], x[1]))
maximum = ordered[0][1]
width = get_tty_width()
ui.note(_("assuming %i character terminal\n") % width)
width -= 1
for i in ordered:
person = i[0]
lines = i[1]
print "%s %6d %s" % (pad(person, 20), lines,
graph(lines, maximum, width - 20 - 1 - 6 - 2 - 2, '*'))
cmdtable = {
"churn":
(churn,
[('r', 'rev', [], _('limit statistics to the specified revisions')),
('', 'aliases', '', _('file with email aliases')),
('', 'progress', None, _('show progress'))],
'hg churn [-r revision range] [-a file] [--progress]'),
}
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