add hg and python

1 files changed, 174 insertions, 0 deletions

diff --git a/sys/src/cmd/hg/hgext/churn.py b/sys/src/cmd/hg/hgext/churn.py
new file mode 100644
index 000000000..930009ab3
--- /dev/null
+++ b/sys/src/cmd/hg/hgext/churn.py
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+# churn.py - create a graph of revisions count grouped by template
+#
+# Copyright 2006 Josef "Jeff" Sipek <jeffpc@josefsipek.net>
+# Copyright 2008 Alexander Solovyov <piranha@piranha.org.ua>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+
+'''command to display statistics about repository history'''
+
+from mercurial.i18n import _
+from mercurial import patch, cmdutil, util, templater
+import sys, os
+import time, datetime
+
+def maketemplater(ui, repo, tmpl):
+    tmpl = templater.parsestring(tmpl, quoted=False)
+    try:
+        t = cmdutil.changeset_templater(ui, repo, False, None, None, False)
+    except SyntaxError, inst:
+        raise util.Abort(inst.args[0])
+    t.use_template(tmpl)
+    return t
+
+def changedlines(ui, repo, ctx1, ctx2, fns):
+    lines = 0
+    fmatch = cmdutil.matchfiles(repo, fns)
+    diff = ''.join(patch.diff(repo, ctx1.node(), ctx2.node(), fmatch))
+    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(ctx)
+            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, fns)
+            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("\r" + _("generating stats: %d%%") % pct)
+                sys.stdout.flush()
+
+    if opts.get('progress'):
+        ui.write("\r")
+        sys.stdout.flush()
+
+    return rate
+
+
+def churn(ui, repo, *pats, **opts):
+    '''histogram of changes to the repository
+
+    This command will display a histogram representing the number
+    of changed lines or revisions, grouped according to the given
+    template. The default template will group changes by author.
+    The --dateformat option may be used to group the results by
+    date instead.
+
+    Statistics are based on the number of changed lines, or
+    alternatively the number of matching revisions if the
+    --changesets option is specified.
+
+    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
+
+    It is possible to map alternate email addresses to a main address
+    by providing a file using the following format::
+
+      <alias email> <actual email>
+
+    Such a file may be specified with the --aliases option, otherwise
+    a .hgchurn file will be looked for in the working directory root.
+    '''
+    def pad(s, l):
+        return (s + " " * l)[:l]
+
+    amap = {}
+    aliases = opts.get('aliases')
+    if not aliases and os.path.exists(repo.wjoin('.hgchurn')):
+        aliases = repo.wjoin('.hgchurn')
+    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
+
+    sortkey = ((not opts.get('sort')) and (lambda x: -x[1]) or None)
+    rate.sort(key=sortkey)
+
+    maxcount = float(max([v for k, v in rate]))
+    maxname = max([len(k) for k, v in rate])
+
+    ttywidth = util.termwidth()
+    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 revisions 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]")),
+}