view hgext/churn.py @ 7177:09ed32b79656

mq: Fix --qrefresh --short to work with --exclude and --include

pmezard expects
	hg qref -s -X b
to apply the -X to the list of files in the patch, and thus remove b from the
patch.
That's how it worked before f7fc5f5ecd62. That change seemed sensible, but it
wasn't...

mpm says
	(17:22:30) pmezard_: kiilerix1: do you mean that -X should be forbidden with -s ?
	(17:22:54) pmezard_: kiilerix1: and --include too
	(17:23:03) mpm: No because you should be able to say hg qref -s foo* -X foo-bar
so mpm expects
	hg qref -s -X b *
to apply the -X to the list of files in the working directory, and thus don't
include b in the patch

This patch tries to make both usecases work by creating a matchfn which uses
the include/excludes but not the filelist.

# churn.py - create a graph of revisions count grouped by template
#
# Copyright 2006 Josef "Jeff" Sipek <[e-mail]>
# Copyright 2008 Alexander Solovyov <[e-mail]>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
'''command to show certain statistics about revision history'''

from mercurial.i18n import _
from mercurial import patch, cmdutil, util, templater
import os, sys
import time, datetime

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 maketemplater(ui, repo, tmpl):
    tmpl = templater.parsestring(tmpl, quoted=False)
    try:
        t = cmdutil.changeset_templater(ui, repo, False, None, False)
    except SyntaxError, inst:
        raise util.Abort(inst.args[0])
    t.use_template(tmpl)
    return t

def changedlines(ui, repo, ctx1, ctx2):
    lines = 0
    ui.pushbuffer()
    patch.diff(repo, ctx1.node(), ctx2.node())
    diff = ui.popbuffer()
    for l in diff.split('\n'):
        if (l.startswith("+") and not l.startswith("+++ ") or
            l.startswith("-") and not l.startswith("--- ")):
            lines += 1
    return lines

def countrate(ui, repo, amap, *pats, **opts):
    """Calculate stats"""
    if opts.get('dateformat'):
        def getkey(ctx):
            t, tz = ctx.date()
            date = datetime.datetime(*time.gmtime(float(t) - tz)[:6])
            return date.strftime(opts['dateformat'])
    else:
        tmpl = opts.get('template', '{author|email}')
        tmpl = maketemplater(ui, repo, tmpl)
        def getkey(ctx):
            ui.pushbuffer()
            tmpl.show(changenode=ctx.node())
            return ui.popbuffer()

    count = pct = 0
    rate = {}
    df = False
    if opts.get('date'):
        df = util.matchdate(opts['date'])

    get = util.cachefunc(lambda r: repo[r].changeset())
    changeiter, matchfn = cmdutil.walkchangerevs(ui, repo, pats, get, opts)
    for st, rev, fns in changeiter:
        if not st == 'add':
            continue
        if df and not df(get(rev)[2][0]): # doesn't match date format
            continue

        ctx = repo[rev]
        key = getkey(ctx)
        key = amap.get(key, key) # alias remap
        if opts.get('changesets'):
            rate[key] = rate.get(key, 0) + 1
        else:
            parents = ctx.parents()
            if len(parents) > 1:
                ui.note(_('Revision %d is a merge, ignoring...\n') % (rev,))
                continue

            ctx1 = parents[0]
            lines = changedlines(ui, repo, ctx1, ctx)
            rate[key] = rate.get(key, 0) + lines

        if opts.get('progress'):
            count += 1
            newpct = int(100.0 * count / max(len(repo), 1))
            if pct < newpct:
                pct = newpct
                ui.write(_("\rGenerating stats: %d%%") % pct)
                sys.stdout.flush()

    if opts.get('progress'):
        ui.write("\r")
        sys.stdout.flush()

    return rate


def churn(ui, repo, *pats, **opts):
    '''Graph count of revisions grouped by template

    Will graph count of changed lines or revisions grouped by template or
    alternatively by date, if dateformat is used. In this case it will override
    template.

    By default statistics are counted for number of changed lines.

    Examples:

      # display count of changed lines for every committer
      hg churn -t '{author|email}'

      # display daily activity graph
      hg churn -f '%H' -s -c

      # display activity of developers by month
      hg churn -f '%Y-%m' -s -c

      # display count of lines changed in every year
      hg churn -f '%Y' -s

    The map file format used to specify aliases is fairly simple:

    <alias email> <actual email>'''
    def pad(s, l):
        return (s + " " * l)[:l]

    amap = {}
    aliases = opts.get('aliases')
    if aliases:
        for l in open(aliases, "r"):
            l = l.strip()
            alias, actual = l.split()
            amap[alias] = actual

    rate = countrate(ui, repo, amap, *pats, **opts).items()
    if not rate:
        return

    sortfn = ((not opts.get('sort')) and (lambda a, b: cmp(b[1], a[1])) or None)
    rate.sort(sortfn)

    maxcount = float(max([v for k, v in rate]))
    maxname = max([len(k) for k, v in rate])

    ttywidth = get_tty_width()
    ui.debug(_("assuming %i character terminal\n") % ttywidth)
    width = ttywidth - maxname - 2 - 6 - 2 - 2

    for date, count in rate:
        print "%s %6d %s" % (pad(date, maxname), count,
                             "*" * int(count * width / maxcount))


cmdtable = {
    "churn":
        (churn,
         [('r', 'rev', [], _('count rate for the specified revision or range')),
          ('d', 'date', '', _('count rate for revs matching date spec')),
          ('t', 'template', '{author|email}', _('template to group changesets')),
          ('f', 'dateformat', '',
              _('strftime-compatible format for grouping by date')),
          ('c', 'changesets', False, _('count rate by number of changesets')),
          ('s', 'sort', False, _('sort by key (default: sort by count)')),
          ('', 'aliases', '', _('file with email aliases')),
          ('', 'progress', None, _('show progress'))],
         _("hg churn [-d DATE] [-r REV] [--aliases FILE] [--progress] [FILE]")),
}