hgext/churn.py
author Mads Kiilerich <mads@kiilerich.com>
Tue, 15 Jan 2013 01:05:12 +0100
changeset 18337 557c8522aec0
parent 17773 434e5bd615fc
child 18369 2150e70c0ee1
permissions -rw-r--r--
tests: better test coverage of merges of flags This makes existing problems with merges of symlinks and files more obvious and add test coverage for tricky merges without real common ancestors.
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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 of the
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# GNU General Public License version 2 or any later version.
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'''command to display statistics about repository history'''
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from mercurial.i18n import _
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from mercurial import patch, cmdutil, scmutil, util, templater, commands
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import os
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import time, datetime
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testedwith = 'internal'
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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, 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, fns):
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    added, removed = 0, 0
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    fmatch = scmutil.matchfiles(repo, fns)
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    diff = ''.join(patch.diff(repo, ctx1.node(), ctx2.node(), fmatch))
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    for l in diff.split('\n'):
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        if l.startswith("+") and not l.startswith("+++ "):
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            added += 1
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        elif l.startswith("-") and not l.startswith("--- "):
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            removed += 1
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    return (added, removed)
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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(ctx)
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            return ui.popbuffer()
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    state = {'count': 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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    m = scmutil.match(repo[None], pats, opts)
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    def prep(ctx, fns):
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        rev = ctx.rev()
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        if df and not df(ctx.date()[0]): # doesn't match date format
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            return
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        key = getkey(ctx).strip()
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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,))[0] + 1, 0)
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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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                return
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            ctx1 = parents[0]
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            lines = changedlines(ui, repo, ctx1, ctx, fns)
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            rate[key] = [r + l for r, l in zip(rate.get(key, (0, 0)), lines)]
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        state['count'] += 1
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        ui.progress(_('analyzing'), state['count'], total=len(repo))
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    for ctx in cmdutil.walkchangerevs(repo, m, opts, prep):
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        continue
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    ui.progress(_('analyzing'), None)
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    return rate
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def churn(ui, repo, *pats, **opts):
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    '''histogram of changes to the repository
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    This command will display a histogram representing the number
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    of changed lines or revisions, grouped according to the given
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    template. The default template will group changes by author.
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    The --dateformat option may be used to group the results by
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    date instead.
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    Statistics are based on the number of changed lines, or
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    alternatively the number of matching revisions if the
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    --changesets option is specified.
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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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    It is possible to map alternate email addresses to a main address
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    by providing a file using the following format::
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      <alias email> = <actual email>
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    Such a file may be specified with the --aliases option, otherwise
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    a .hgchurn file will be looked for in the working directory root.
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    '''
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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 not aliases and os.path.exists(repo.wjoin('.hgchurn')):
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        aliases = repo.wjoin('.hgchurn')
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    if aliases:
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        for l in open(aliases, "r"):
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            try:
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                alias, actual = l.split('=' in l and '=' or None, 1)
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                amap[alias.strip()] = actual.strip()
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            except ValueError:
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                l = l.strip()
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                if l:
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                    ui.warn(_("skipping malformed alias: %s\n") % l)
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                continue
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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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    sortkey = ((not opts.get('sort')) and (lambda x: -sum(x[1])) or None)
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    rate.sort(key=sortkey)
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    # Be careful not to have a zero maxcount (issue833)
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    maxcount = float(max(sum(v) for k, v in rate)) or 1.0
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    maxname = max(len(k) for k, v in rate)
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    ttywidth = ui.termwidth()
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    ui.debug("assuming %i character terminal\n" % ttywidth)
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    width = ttywidth - maxname - 2 - 2 - 2
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    if opts.get('diffstat'):
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        width -= 15
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        def format(name, diffstat):
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            added, removed = diffstat
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            return "%s %15s %s%s\n" % (pad(name, maxname),
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                                       '+%d/-%d' % (added, removed),
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                                       ui.label('+' * charnum(added),
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                                                'diffstat.inserted'),
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                                       ui.label('-' * charnum(removed),
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                                                'diffstat.deleted'))
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    else:
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        width -= 6
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        def format(name, count):
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            return "%s %6d %s\n" % (pad(name, maxname), sum(count),
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                                    '*' * charnum(sum(count)))
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    def charnum(count):
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        return int(round(count * width / maxcount))
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    for name, count in rate:
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        ui.write(format(name, count))
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   179
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cmdtable = {
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    "churn":
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        (churn,
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         [('r', 'rev', [],
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           _('count rate for the specified revision or range'), _('REV')),
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          ('d', 'date', '',
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           _('count rate for revisions matching date spec'), _('DATE')),
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          ('t', 'template', '{author|email}',
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           _('template to group changesets'), _('TEMPLATE')),
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          ('f', 'dateformat', '',
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           _('strftime-compatible format for grouping by date'), _('FORMAT')),
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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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          ('', 'diffstat', False, _('display added/removed lines separately')),
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          ('', 'aliases', '',
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           _('file with email aliases'), _('FILE')),
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   197
          ] + commands.walkopts,
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   198
         _("hg churn [-d DATE] [-r REV] [--aliases FILE] [FILE]")),
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   199
}
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   200
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commands.inferrepo += " churn"