hgext/churn.py
author Alexander Solovyov <piranha@piranha.org.ua>
Fri, 10 Oct 2008 15:53:49 +0300
changeset 7076 c29d3f4ed967
parent 7070 2627ef59195d
child 7127 9df67ee30ef5
permissions -rw-r--r--
churn: py2.3 compatibility fix - generator expressions appeared in py2.4 - sort doesn't have any arguments except sorting function
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# churn.py - create a graph of revisions count grouped by template
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#
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# Copyright 2006 Josef "Jeff" Sipek <jeffpc@josefsipek.net>
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# Copyright 2008 Alexander Solovyov <piranha@piranha.org.ua>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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'''allow graphing the number of lines (or count of revisions) grouped by template'''
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from mercurial.i18n import _
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from mercurial import patch, cmdutil, util, templater
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import os, sys
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import time, datetime
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def get_tty_width():
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    if 'COLUMNS' in os.environ:
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        try:
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            return int(os.environ['COLUMNS'])
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        except ValueError:
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            pass
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    try:
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        import termios, array, fcntl
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        for dev in (sys.stdout, sys.stdin):
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            try:
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                fd = dev.fileno()
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                if not os.isatty(fd):
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                    continue
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                arri = fcntl.ioctl(fd, termios.TIOCGWINSZ, '\0' * 8)
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                return array.array('h', arri)[1]
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            except ValueError:
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                pass
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    except ImportError:
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        pass
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    return 80
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def maketemplater(ui, repo, tmpl):
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    tmpl = templater.parsestring(tmpl, quoted=False)
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    try:
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        t = cmdutil.changeset_templater(ui, repo, False, None, False)
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    except SyntaxError, inst:
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        raise util.Abort(inst.args[0])
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    t.use_template(tmpl)
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    return t
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def changedlines(ui, repo, ctx1, ctx2):
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    lines = 0
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    ui.pushbuffer()
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    patch.diff(repo, ctx1.node(), ctx2.node())
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    diff = ui.popbuffer()
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    for l in diff.split('\n'):
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        if (l.startswith("+") and not l.startswith("+++ ") or
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            l.startswith("-") and not l.startswith("--- ")):
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            lines += 1
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    return lines
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def countrate(ui, repo, amap, *pats, **opts):
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    """Calculate stats"""
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    if opts.get('dateformat'):
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        def getkey(ctx):
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            t, tz = ctx.date()
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            date = datetime.datetime(*time.gmtime(float(t) - tz)[:6])
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            return date.strftime(opts['dateformat'])
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    else:
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        tmpl = opts.get('template', '{author|email}')
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        tmpl = maketemplater(ui, repo, tmpl)
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        def getkey(ctx):
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            ui.pushbuffer()
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            tmpl.show(changenode=ctx.node())
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            return ui.popbuffer()
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    count = pct = 0
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    rate = {}
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    df = False
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    if opts.get('date'):
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        df = util.matchdate(opts['date'])
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    get = util.cachefunc(lambda r: repo[r].changeset())
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    changeiter, matchfn = cmdutil.walkchangerevs(ui, repo, pats, get, opts)
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    for st, rev, fns in changeiter:
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        if not st == 'add':
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            continue
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        if df and not df(get(rev)[2][0]): # doesn't match date format
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            continue
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        ctx = repo[rev]
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        key = getkey(ctx)
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        key = amap.get(key, key) # alias remap
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        if opts.get('changesets'):
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            rate[key] = rate.get(key, 0) + 1
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        else:
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            parents = ctx.parents()
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            if len(parents) > 1:
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                ui.note(_('Revision %d is a merge, ignoring...\n') % (rev,))
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                continue
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            ctx1 = parents[0]
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            lines = changedlines(ui, repo, ctx1, ctx)
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            rate[key] = rate.get(key, 0) + lines
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        if opts.get('progress'):
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            count += 1
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            newpct = int(100.0 * count / max(len(repo), 1))
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            if pct < newpct:
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                pct = newpct
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                ui.write(_("\rGenerating stats: %d%%") % pct)
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                sys.stdout.flush()
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    if opts.get('progress'):
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        ui.write("\r")
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        sys.stdout.flush()
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    return rate
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def churn(ui, repo, *pats, **opts):
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    '''Graph count of revisions grouped by template
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    Will graph count of changed lines or revisions grouped by template or
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    alternatively by date, if dateformat is used. In this case it will override
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    template.
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    By default statistics are counted for number of changed lines.
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    Examples:
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      # display count of changed lines for every committer
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      hg churn -t '{author|email}'
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      # display daily activity graph
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      hg churn -f '%H' -s -c
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      # display activity of developers by month
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      hg churn -f '%Y-%m' -s -c
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      # display count of lines changed in every year
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      hg churn -f '%Y' -s
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    The map file format used to specify aliases is fairly simple:
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    <alias email> <actual email>'''
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    def pad(s, l):
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        return (s + " " * l)[:l]
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    amap = {}
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    aliases = opts.get('aliases')
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    if aliases:
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        for l in open(aliases, "r"):
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            l = l.strip()
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            alias, actual = l.split()
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            amap[alias] = actual
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    rate = countrate(ui, repo, amap, *pats, **opts).items()
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    if not rate:
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        return
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    sortfn = ((not opts.get('sort')) and (lambda a, b: cmp(b[1], a[1])) or None)
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    rate.sort(sortfn)
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    maxcount = float(max([v for k, v in rate]))
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    maxname = max([len(k) for k, v in rate])
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    ttywidth = get_tty_width()
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    ui.debug(_("assuming %i character terminal\n") % ttywidth)
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    width = ttywidth - maxname - 2 - 6 - 2 - 2
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    for date, count in rate:
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        print "%s %6d %s" % (pad(date, maxname), count,
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                             "*" * int(count * width / maxcount))
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cmdtable = {
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    "churn":
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        (churn,
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         [('r', 'rev', [], _('count rate for the specified revision or range')),
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          ('d', 'date', '', _('count rate for revs matching date spec')),
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          ('t', 'template', '{author|email}', _('template to group changesets')),
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          ('f', 'dateformat', '',
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              _('strftime-compatible format for grouping by date')),
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          ('c', 'changesets', False, _('count rate by number of changesets')),
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          ('s', 'sort', False, _('sort by key (default: sort by count)')),
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          ('', 'aliases', '', _('file with email aliases')),
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          ('', 'progress', None, _('show progress'))],
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         _("hg stats [-d DATE] [-r REV] [--aliases FILE] [--progress] [FILE]")),
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}