--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/hgweb/webutil.py	Fri Mar 28 19:37:28 2008 +0100
@@ -0,0 +1,94 @@
+# hgweb/webutil.py - utility library for the web interface.
+#
+# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
+# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms
+# of the GNU General Public License, incorporated herein by reference.
+
+from mercurial.node import hex, nullid
+from mercurial.repo import RepoError
+from mercurial import util
+
+def siblings(siblings=[], hiderev=None, **args):
+    siblings = [s for s in siblings if s.node() != nullid]
+    if len(siblings) == 1 and siblings[0].rev() == hiderev:
+        return
+    for s in siblings:
+        d = {'node': hex(s.node()), 'rev': s.rev()}
+        if hasattr(s, 'path'):
+            d['file'] = s.path()
+        d.update(args)
+        yield d
+
+def renamelink(fl, node):
+    r = fl.renamed(node)
+    if r:
+        return [dict(file=r[0], node=hex(r[1]))]
+    return []
+
+def nodetagsdict(repo, node):
+    return [{"name": i} for i in repo.nodetags(node)]
+
+def nodebranchdict(repo, ctx):
+    branches = []
+    branch = ctx.branch()
+    # If this is an empty repo, ctx.node() == nullid,
+    # ctx.branch() == 'default', but branchtags() is
+    # an empty dict. Using dict.get avoids a traceback.
+    if repo.branchtags().get(branch) == ctx.node():
+        branches.append({"name": branch})
+    return branches
+
+def nodeinbranch(repo, ctx):
+    branches = []
+    branch = ctx.branch()
+    if branch != 'default' and repo.branchtags().get(branch) != ctx.node():
+        branches.append({"name": branch})
+    return branches
+
+def nodebranchnodefault(ctx):
+    branches = []
+    branch = ctx.branch()
+    if branch != 'default':
+        branches.append({"name": branch})
+    return branches
+
+def showtag(repo, tmpl, t1, node=nullid, **args):
+    for t in repo.nodetags(node):
+        yield tmpl(t1, tag=t, **args)
+
+def cleanpath(repo, path):
+    path = path.lstrip('/')
+    return util.canonpath(repo.root, '', path)
+
+def changectx(repo, req):
+    if 'node' in req.form:
+        changeid = req.form['node'][0]
+    elif 'manifest' in req.form:
+        changeid = req.form['manifest'][0]
+    else:
+        changeid = self.repo.changelog.count() - 1
+
+    try:
+        ctx = repo.changectx(changeid)
+    except RepoError:
+        man = repo.manifest
+        mn = man.lookup(changeid)
+        ctx = repo.changectx(man.linkrev(mn))
+
+    return ctx
+
+def filectx(repo, req):
+    path = cleanpath(repo, req.form['file'][0])
+    if 'node' in req.form:
+        changeid = req.form['node'][0]
+    else:
+        changeid = req.form['filenode'][0]
+    try:
+        ctx = repo.changectx(changeid)
+        fctx = ctx.filectx(path)
+    except RepoError:
+        fctx = repo.filectx(path, fileid=changeid)
+
+    return fctx