tcodereview: add hg plugin from Go - plan9port - [fork] Plan 9 from user space
 (HTM) git clone git://src.adamsgaard.dk/plan9port
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       ---
 (DIR) commit ef27bfa4ab95825fc2f7c733064b8c96ee17d73e
 (DIR) parent 6a6c2663bfd42eab68cc53c42a499798ae6332a3
 (HTM) Author: Russ Cox <rsc@swtch.com>
       Date:   Tue, 12 Jan 2010 11:10:35 -0800
       
       codereview: add hg plugin from Go
       
       R=, rsc
       CC=
       http://codereview.appspot.com/186107
       
       Diffstat:
         A lib/codereview/codereview.cfg       |       1 +
         A lib/codereview/codereview.py        |    3185 +++++++++++++++++++++++++++++++
       
       2 files changed, 3186 insertions(+), 0 deletions(-)
       ---
 (DIR) diff --git a/lib/codereview/codereview.cfg b/lib/codereview/codereview.cfg
       t@@ -0,0 +1 @@
       +# defaultcc: plan9port-dev@googlegroups.com
 (DIR) diff --git a/lib/codereview/codereview.py b/lib/codereview/codereview.py
       t@@ -0,0 +1,3185 @@
       +#!/usr/bin/env python
       +#
       +# Copyright 2007-2009 Google Inc.
       +#
       +# Licensed under the Apache License, Version 2.0 (the "License");
       +# you may not use this file except in compliance with the License.
       +# You may obtain a copy of the License at
       +#
       +#     http://www.apache.org/licenses/LICENSE-2.0
       +#
       +# Unless required by applicable law or agreed to in writing, software
       +# distributed under the License is distributed on an "AS IS" BASIS,
       +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       +# See the License for the specific language governing permissions and
       +# limitations under the License.
       +
       +'''Mercurial interface to codereview.appspot.com.
       +
       +To configure, set the following options in
       +your repository's .hg/hgrc file.
       +
       +        [extensions]
       +        codereview = path/to/codereview.py
       +
       +        [codereview]
       +        server = codereview.appspot.com
       +
       +The server should be running Rietveld; see http://code.google.com/p/rietveld/.
       +
       +In addition to the new commands, this extension introduces
       +the file pattern syntax @nnnnnn, where nnnnnn is a change list
       +number, to mean the files included in that change list, which
       +must be associated with the current client.
       +
       +For example, if change 123456 contains the files x.go and y.go,
       +"hg diff @123456" is equivalent to"hg diff x.go y.go".
       +'''
       +
       +from mercurial import cmdutil, commands, hg, util, error, match
       +from mercurial.node import nullrev, hex, nullid, short
       +import os, re, time
       +import stat
       +import subprocess
       +import threading
       +from HTMLParser import HTMLParser
       +try:
       +        from xml.etree import ElementTree as ET
       +except:
       +        from elementtree import ElementTree as ET
       +
       +try:
       +        hgversion = util.version()
       +except:
       +        from mercurial.version import version as v
       +        hgversion = v.get_version()
       +
       +oldMessage = """
       +The code review extension requires Mercurial 1.3 or newer.
       +
       +To install a new Mercurial,
       +
       +        sudo easy_install mercurial
       +
       +works on most systems.
       +"""
       +
       +linuxMessage = """
       +You may need to clear your current Mercurial installation by running:
       +
       +        sudo apt-get remove mercurial mercurial-common
       +        sudo rm -rf /etc/mercurial
       +"""
       +
       +if hgversion < '1.3':
       +        msg = oldMessage
       +        if os.access("/etc/mercurial", 0):
       +                msg += linuxMessage
       +        raise util.Abort(msg)
       +
       +# To experiment with Mercurial in the python interpreter:
       +#    >>> repo = hg.repository(ui.ui(), path = ".")
       +
       +#######################################################################
       +# Normally I would split this into multiple files, but it simplifies
       +# import path headaches to keep it all in one file.  Sorry.
       +
       +import sys
       +if __name__ == "__main__":
       +        print >>sys.stderr, "This is a Mercurial extension and should not be invoked directly."
       +        sys.exit(2)
       +
       +server = "codereview.appspot.com"
       +server_url_base = None
       +defaultcc = None
       +
       +#######################################################################
       +# Change list parsing.
       +#
       +# Change lists are stored in .hg/codereview/cl.nnnnnn
       +# where nnnnnn is the number assigned by the code review server.
       +# Most data about a change list is stored on the code review server
       +# too: the description, reviewer, and cc list are all stored there.
       +# The only thing in the cl.nnnnnn file is the list of relevant files.
       +# Also, the existence of the cl.nnnnnn file marks this repository
       +# as the one where the change list lives.
       +
       +emptydiff = """Index: ~rietveld~placeholder~
       +===================================================================
       +diff --git a/~rietveld~placeholder~ b/~rietveld~placeholder~
       +new file mode 100644
       +"""
       +
       +
       +class CL(object):
       +        def __init__(self, name):
       +                self.name = name
       +                self.desc = ''
       +                self.files = []
       +                self.reviewer = []
       +                self.cc = []
       +                self.url = ''
       +                self.local = False
       +                self.web = False
       +                self.copied_from = None        # None means current user
       +                self.mailed = False
       +
       +        def DiskText(self):
       +                cl = self
       +                s = ""
       +                if cl.copied_from:
       +                        s += "Author: " + cl.copied_from + "\n\n"
       +                s += "Mailed: " + str(self.mailed) + "\n"
       +                s += "Description:\n"
       +                s += Indent(cl.desc, "\t")
       +                s += "Files:\n"
       +                for f in cl.files:
       +                        s += "\t" + f + "\n"
       +                return s
       +
       +        def EditorText(self):
       +                cl = self
       +                s = _change_prolog
       +                s += "\n"
       +                if cl.copied_from:
       +                        s += "Author: " + cl.copied_from + "\n"
       +                if cl.url != '':
       +                        s += 'URL: ' + cl.url + '        # cannot edit\n\n'
       +                s += "Reviewer: " + JoinComma(cl.reviewer) + "\n"
       +                s += "CC: " + JoinComma(cl.cc) + "\n"
       +                s += "\n"
       +                s += "Description:\n"
       +                if cl.desc == '':
       +                        s += "\t<enter description here>\n"
       +                else:
       +                        s += Indent(cl.desc, "\t")
       +                s += "\n"
       +                if cl.local or cl.name == "new":
       +                        s += "Files:\n"
       +                        for f in cl.files:
       +                                s += "\t" + f + "\n"
       +                        s += "\n"
       +                return s
       +
       +        def PendingText(self):
       +                cl = self
       +                s = cl.name + ":" + "\n"
       +                s += Indent(cl.desc, "\t")
       +                s += "\n"
       +                if cl.copied_from:
       +                        s += "\tAuthor: " + cl.copied_from + "\n"
       +                s += "\tReviewer: " + JoinComma(cl.reviewer) + "\n"
       +                s += "\tCC: " + JoinComma(cl.cc) + "\n"
       +                s += "\tFiles:\n"
       +                for f in cl.files:
       +                        s += "\t\t" + f + "\n"
       +                return s
       +
       +        def Flush(self, ui, repo):
       +                if self.name == "new":
       +                        self.Upload(ui, repo, gofmt_just_warn=True)
       +                dir = CodeReviewDir(ui, repo)
       +                path = dir + '/cl.' + self.name
       +                f = open(path+'!', "w")
       +                f.write(self.DiskText())
       +                f.close()
       +                if sys.platform == "win32" and os.path.isfile(path):
       +                        os.remove(path)
       +                os.rename(path+'!', path)
       +                if self.web and not self.copied_from:
       +                        EditDesc(self.name, desc=self.desc,
       +                                reviewers=JoinComma(self.reviewer), cc=JoinComma(self.cc))
       +
       +        def Delete(self, ui, repo):
       +                dir = CodeReviewDir(ui, repo)
       +                os.unlink(dir + "/cl." + self.name)
       +
       +        def Subject(self):
       +                s = line1(self.desc)
       +                if len(s) > 60:
       +                        s = s[0:55] + "..."
       +                if self.name != "new":
       +                        s = "code review %s: %s" % (self.name, s)
       +                return s
       +
       +        def Upload(self, ui, repo, send_mail=False, gofmt=True, gofmt_just_warn=False):
       +                if not self.files:
       +                        ui.warn("no files in change list\n")
       +                if ui.configbool("codereview", "force_gofmt", True) and gofmt:
       +                        CheckGofmt(ui, repo, self.files, just_warn=gofmt_just_warn)
       +                os.chdir(repo.root)
       +                form_fields = [
       +                        ("content_upload", "1"),
       +                        ("reviewers", JoinComma(self.reviewer)),
       +                        ("cc", JoinComma(self.cc)),
       +                        ("description", self.desc),
       +                        ("base_hashes", ""),
       +                        # Would prefer not to change the subject
       +                        # on reupload, but /upload requires it.
       +                        ("subject", self.Subject()),
       +                ]
       +
       +                # NOTE(rsc): This duplicates too much of RealMain,
       +                # but RealMain doesn't have the most reusable interface.
       +                if self.name != "new":
       +                        form_fields.append(("issue", self.name))
       +                vcs = None
       +                if self.files:
       +                        vcs = GuessVCS(upload_options)
       +                        data = vcs.GenerateDiff(self.files)
       +                        files = vcs.GetBaseFiles(data)
       +                        if len(data) > MAX_UPLOAD_SIZE:
       +                                uploaded_diff_file = []
       +                                form_fields.append(("separate_patches", "1"))
       +                        else:
       +                                uploaded_diff_file = [("data", "data.diff", data)]
       +                else:
       +                        uploaded_diff_file = [("data", "data.diff", emptydiff)]
       +                ctype, body = EncodeMultipartFormData(form_fields, uploaded_diff_file)
       +                response_body = MySend("/upload", body, content_type=ctype)
       +                patchset = None
       +                msg = response_body
       +                lines = msg.splitlines()
       +                if len(lines) >= 2:
       +                        msg = lines[0]
       +                        patchset = lines[1].strip()
       +                        patches = [x.split(" ", 1) for x in lines[2:]]
       +                ui.status(msg + "\n")
       +                if not response_body.startswith("Issue created.") and not response_body.startswith("Issue updated."):
       +                        raise util.Abort("failed to update issue: " + response_body)
       +                issue = msg[msg.rfind("/")+1:]
       +                self.name = issue
       +                if not self.url:
       +                        self.url = server_url_base + self.name
       +                if not uploaded_diff_file:
       +                        patches = UploadSeparatePatches(issue, rpc, patchset, data, upload_options)
       +                if vcs:
       +                        vcs.UploadBaseFiles(issue, rpc, patches, patchset, upload_options, files)
       +                if send_mail:
       +                        MySend("/" + issue + "/mail", payload="")
       +                self.web = True
       +                self.Flush(ui, repo)
       +                return
       +
       +        def Mail(self, ui,repo):
       +                pmsg = "Hello " + JoinComma(self.reviewer)
       +                if self.cc:
       +                        pmsg += " (cc: %s)" % (', '.join(self.cc),)
       +                pmsg += ",\n"
       +                pmsg += "\n"
       +                if not self.mailed:
       +                        pmsg += "I'd like you to review this change.\n"
       +                else:
       +                        pmsg += "Please take another look.\n"
       +                PostMessage(ui, self.name, pmsg, subject=self.Subject())
       +                self.mailed = True
       +                self.Flush(ui, repo)
       +
       +def GoodCLName(name):
       +        return re.match("^[0-9]+$", name)
       +
       +def ParseCL(text, name):
       +        sname = None
       +        lineno = 0
       +        sections = {
       +                'Author': '',
       +                'Description': '',
       +                'Files': '',
       +                'URL': '',
       +                'Reviewer': '',
       +                'CC': '',
       +                'Mailed': '',
       +        }
       +        for line in text.split('\n'):
       +                lineno += 1
       +                line = line.rstrip()
       +                if line != '' and line[0] == '#':
       +                        continue
       +                if line == '' or line[0] == ' ' or line[0] == '\t':
       +                        if sname == None and line != '':
       +                                return None, lineno, 'text outside section'
       +                        if sname != None:
       +                                sections[sname] += line + '\n'
       +                        continue
       +                p = line.find(':')
       +                if p >= 0:
       +                        s, val = line[:p].strip(), line[p+1:].strip()
       +                        if s in sections:
       +                                sname = s
       +                                if val != '':
       +                                        sections[sname] += val + '\n'
       +                                continue
       +                return None, lineno, 'malformed section header'
       +
       +        for k in sections:
       +                sections[k] = StripCommon(sections[k]).rstrip()
       +
       +        cl = CL(name)
       +        if sections['Author']:
       +                cl.copied_from = sections['Author']
       +        cl.desc = sections['Description']
       +        for line in sections['Files'].split('\n'):
       +                i = line.find('#')
       +                if i >= 0:
       +                        line = line[0:i].rstrip()
       +                if line == '':
       +                        continue
       +                cl.files.append(line)
       +        cl.reviewer = SplitCommaSpace(sections['Reviewer'])
       +        cl.cc = SplitCommaSpace(sections['CC'])
       +        cl.url = sections['URL']
       +        if sections['Mailed'] != 'False':
       +                # Odd default, but avoids spurious mailings when
       +                # reading old CLs that do not have a Mailed: line.
       +                # CLs created with this update will always have 
       +                # Mailed: False on disk.
       +                cl.mailed = True
       +        if cl.desc == '<enter description here>':
       +                cl.desc = ''
       +        return cl, 0, ''
       +
       +def SplitCommaSpace(s):
       +        return re.sub(", *", ",", s).split(",")
       +
       +def CutDomain(s):
       +        i = s.find('@')
       +        if i >= 0:
       +                s = s[0:i]
       +        return s
       +
       +def JoinComma(l):
       +        return ", ".join(l)
       +
       +def ExceptionDetail():
       +        s = str(sys.exc_info()[0])
       +        if s.startswith("<type '") and s.endswith("'>"):
       +                s = s[7:-2]
       +        elif s.startswith("<class '") and s.endswith("'>"):
       +                s = s[8:-2]
       +        arg = str(sys.exc_info()[1])
       +        if len(arg) > 0:
       +                s += ": " + arg
       +        return s
       +
       +def IsLocalCL(ui, repo, name):
       +        return GoodCLName(name) and os.access(CodeReviewDir(ui, repo) + "/cl." + name, 0)
       +
       +# Load CL from disk and/or the web.
       +def LoadCL(ui, repo, name, web=True):
       +        if not GoodCLName(name):
       +                return None, "invalid CL name"
       +        dir = CodeReviewDir(ui, repo)
       +        path = dir + "cl." + name
       +        if os.access(path, 0):
       +                ff = open(path)
       +                text = ff.read()
       +                ff.close()
       +                cl, lineno, err = ParseCL(text, name)
       +                if err != "":
       +                        return None, "malformed CL data: "+err
       +                cl.local = True
       +        else:
       +                cl = CL(name)
       +        if web:
       +                try:
       +                        f = GetSettings(name)
       +                except:
       +                        return None, "cannot load CL %s from code review server: %s" % (name, ExceptionDetail())
       +                if 'reviewers' not in f:
       +                        return None, "malformed response loading CL data from code review server"
       +                cl.reviewer = SplitCommaSpace(f['reviewers'])
       +                cl.cc = SplitCommaSpace(f['cc'])
       +                if cl.local and cl.copied_from and cl.desc:
       +                        # local copy of CL written by someone else
       +                        # and we saved a description.  use that one,
       +                        # so that committers can edit the description
       +                        # before doing hg submit.
       +                        pass
       +                else:
       +                        cl.desc = f['description']
       +                cl.url = server_url_base + name
       +                cl.web = True
       +        return cl, ''
       +
       +class LoadCLThread(threading.Thread):
       +        def __init__(self, ui, repo, dir, f, web):
       +                threading.Thread.__init__(self)
       +                self.ui = ui
       +                self.repo = repo
       +                self.dir = dir
       +                self.f = f
       +                self.web = web
       +                self.cl = None
       +        def run(self):
       +                cl, err = LoadCL(self.ui, self.repo, self.f[3:], web=self.web)
       +                if err != '':
       +                        self.ui.warn("loading "+self.dir+self.f+": " + err + "\n")
       +                        return
       +                self.cl = cl
       +
       +# Load all the CLs from this repository.
       +def LoadAllCL(ui, repo, web=True):
       +        dir = CodeReviewDir(ui, repo)
       +        m = {}
       +        files = [f for f in os.listdir(dir) if f.startswith('cl.')]
       +        if not files:
       +                return m
       +        active = []
       +        first = True
       +        for f in files:
       +                t = LoadCLThread(ui, repo, dir, f, web)
       +                t.start()
       +                if web and first:
       +                        # first request: wait in case it needs to authenticate
       +                        # otherwise we get lots of user/password prompts
       +                        # running in parallel.
       +                        t.join()
       +                        if t.cl:
       +                                m[t.cl.name] = t.cl
       +                        first = False
       +                else:
       +                        active.append(t)
       +        for t in active:
       +                t.join()
       +                if t.cl:
       +                        m[t.cl.name] = t.cl
       +        return m
       +
       +# Find repository root.  On error, ui.warn and return None
       +def RepoDir(ui, repo):
       +        url = repo.url();
       +        if not url.startswith('file:'):
       +                ui.warn("repository %s is not in local file system\n" % (url,))
       +                return None
       +        url = url[5:]
       +        if url.endswith('/'):
       +                url = url[:-1]
       +        return url
       +
       +# Find (or make) code review directory.  On error, ui.warn and return None
       +def CodeReviewDir(ui, repo):
       +        dir = RepoDir(ui, repo)
       +        if dir == None:
       +                return None
       +        dir += '/.hg/codereview/'
       +        if not os.path.isdir(dir):
       +                try:
       +                        os.mkdir(dir, 0700)
       +                except:
       +                        ui.warn('cannot mkdir %s: %s\n' % (dir, ExceptionDetail()))
       +                        return None
       +        return dir
       +
       +# Strip maximal common leading white space prefix from text
       +def StripCommon(text):
       +        ws = None
       +        for line in text.split('\n'):
       +                line = line.rstrip()
       +                if line == '':
       +                        continue
       +                white = line[:len(line)-len(line.lstrip())]
       +                if ws == None:
       +                        ws = white
       +                else:
       +                        common = ''
       +                        for i in range(min(len(white), len(ws))+1):
       +                                if white[0:i] == ws[0:i]:
       +                                        common = white[0:i]
       +                        ws = common
       +                if ws == '':
       +                        break
       +        if ws == None:
       +                return text
       +        t = ''
       +        for line in text.split('\n'):
       +                line = line.rstrip()
       +                if line.startswith(ws):
       +                        line = line[len(ws):]
       +                if line == '' and t == '':
       +                        continue
       +                t += line + '\n'
       +        while len(t) >= 2 and t[-2:] == '\n\n':
       +                t = t[:-1]
       +        return t
       +
       +# Indent text with indent.
       +def Indent(text, indent):
       +        t = ''
       +        for line in text.split('\n'):
       +                t += indent + line + '\n'
       +        return t
       +
       +# Return the first line of l
       +def line1(text):
       +        return text.split('\n')[0]
       +
       +_change_prolog = """# Change list.
       +# Lines beginning with # are ignored.
       +# Multi-line values should be indented.
       +"""
       +
       +#######################################################################
       +# Mercurial helper functions
       +
       +# Return list of changed files in repository that match pats.
       +def ChangedFiles(ui, repo, pats, opts):
       +        # Find list of files being operated on.
       +        matcher = cmdutil.match(repo, pats, opts)
       +        node1, node2 = cmdutil.revpair(repo, None)
       +        modified, added, removed = repo.status(node1, node2, matcher)[:3]
       +        l = modified + added + removed
       +        l.sort()
       +        return l
       +
       +# Return list of changed files in repository that match pats and still exist.
       +def ChangedExistingFiles(ui, repo, pats, opts):
       +        matcher = cmdutil.match(repo, pats, opts)
       +        node1, node2 = cmdutil.revpair(repo, None)
       +        modified, added, _ = repo.status(node1, node2, matcher)[:3]
       +        l = modified + added
       +        l.sort()
       +        return l
       +
       +# Return list of files claimed by existing CLs
       +def TakenFiles(ui, repo):
       +        return Taken(ui, repo).keys()
       +
       +def Taken(ui, repo):
       +        all = LoadAllCL(ui, repo, web=False)
       +        taken = {}
       +        for _, cl in all.items():
       +                for f in cl.files:
       +                        taken[f] = cl
       +        return taken
       +
       +# Return list of changed files that are not claimed by other CLs
       +def DefaultFiles(ui, repo, pats, opts):
       +        return Sub(ChangedFiles(ui, repo, pats, opts), TakenFiles(ui, repo))
       +
       +def Sub(l1, l2):
       +        return [l for l in l1 if l not in l2]
       +
       +def Add(l1, l2):
       +        l = l1 + Sub(l2, l1)
       +        l.sort()
       +        return l
       +
       +def Intersect(l1, l2):
       +        return [l for l in l1 if l in l2]
       +
       +def getremote(ui, repo, opts):
       +        # save $http_proxy; creating the HTTP repo object will
       +        # delete it in an attempt to "help"
       +        proxy = os.environ.get('http_proxy')
       +        source, _, _ = hg.parseurl(ui.expandpath("default"), None)
       +        other = hg.repository(cmdutil.remoteui(repo, opts), source)
       +        if proxy is not None:
       +                os.environ['http_proxy'] = proxy
       +        return other
       +
       +def Incoming(ui, repo, opts):
       +        _, incoming, _ = repo.findcommonincoming(getremote(ui, repo, opts))
       +        return incoming
       +
       +def EditCL(ui, repo, cl):
       +        s = cl.EditorText()
       +        while True:
       +                s = ui.edit(s, ui.username())
       +                clx, line, err = ParseCL(s, cl.name)
       +                if err != '':
       +                        if ui.prompt("error parsing change list: line %d: %s\nre-edit (y/n)?" % (line, err), ["&yes", "&no"], "y") == "n":
       +                                return "change list not modified"
       +                        continue
       +                cl.desc = clx.desc;
       +                cl.reviewer = clx.reviewer
       +                cl.cc = clx.cc
       +                cl.files = clx.files
       +                if cl.desc == '':
       +                        if ui.prompt("change list should have description\nre-edit (y/n)?", ["&yes", "&no"], "y") != "n":
       +                                continue
       +                break
       +        return ""
       +
       +# For use by submit, etc. (NOT by change)
       +# Get change list number or list of files from command line.
       +# If files are given, make a new change list.
       +def CommandLineCL(ui, repo, pats, opts, defaultcc=None):
       +        if len(pats) > 0 and GoodCLName(pats[0]):
       +                if len(pats) != 1:
       +                        return None, "cannot specify change number and file names"
       +                if opts.get('message'):
       +                        return None, "cannot use -m with existing CL"
       +                cl, err = LoadCL(ui, repo, pats[0], web=True)
       +                if err != "":
       +                        return None, err
       +        else:
       +                cl = CL("new")
       +                cl.local = True
       +                cl.files = Sub(ChangedFiles(ui, repo, pats, opts), TakenFiles(ui, repo))
       +                if not cl.files:
       +                        return None, "no files changed"
       +        if opts.get('reviewer'):
       +                cl.reviewer = Add(cl.reviewer, SplitCommaSpace(opts.get('reviewer')))
       +        if opts.get('cc'):
       +                cl.cc = Add(cl.cc, SplitCommaSpace(opts.get('cc')))
       +        if defaultcc:
       +                cl.cc = Add(cl.cc, defaultcc)
       +        if cl.name == "new":
       +                if opts.get('message'):
       +                        cl.desc = opts.get('message')
       +                else:
       +                        err = EditCL(ui, repo, cl)
       +                        if err != '':
       +                                return None, err
       +        return cl, ""
       +
       +# reposetup replaces cmdutil.match with this wrapper,
       +# which expands the syntax @clnumber to mean the files
       +# in that CL.
       +original_match = None
       +def ReplacementForCmdutilMatch(repo, pats=[], opts={}, globbed=False, default='relpath'):
       +        taken = []
       +        files = []
       +        for p in pats:
       +                if p.startswith('@'):
       +                        taken.append(p)
       +                        clname = p[1:]
       +                        if not GoodCLName(clname):
       +                                raise util.Abort("invalid CL name " + clname)
       +                        cl, err = LoadCL(repo.ui, repo, clname, web=False)
       +                        if err != '':
       +                                raise util.Abort("loading CL " + clname + ": " + err)
       +                        if cl.files == None:
       +                                raise util.Abort("no files in CL " + clname)
       +                        files = Add(files, cl.files)
       +        pats = Sub(pats, taken)        + ['path:'+f for f in files]
       +        return original_match(repo, pats=pats, opts=opts, globbed=globbed, default=default)
       +
       +def RelativePath(path, cwd):
       +        n = len(cwd)
       +        if path.startswith(cwd) and path[n] == '/':
       +                return path[n+1:]
       +        return path
       +
       +# Check that gofmt run on the list of files does not change them
       +def CheckGofmt(ui, repo, files, just_warn=False):
       +        files = [f for f in files if (f.startswith('src/') or f.startswith('test/bench/')) and f.endswith('.go')]
       +        if not files:
       +                return
       +        cwd = os.getcwd()
       +        files = [RelativePath(repo.root + '/' + f, cwd) for f in files]
       +        files = [f for f in files if os.access(f, 0)]
       +        try:
       +                cmd = subprocess.Popen(["gofmt", "-l"] + files, shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
       +                cmd.stdin.close()
       +        except:
       +                raise util.Abort("gofmt: " + ExceptionDetail())
       +        data = cmd.stdout.read()
       +        errors = cmd.stderr.read()
       +        cmd.wait()
       +        if len(errors) > 0:
       +                ui.warn("gofmt errors:\n" + errors.rstrip() + "\n")
       +                return
       +        if len(data) > 0:
       +                msg = "gofmt needs to format these files (run hg gofmt):\n" + Indent(data, "\t").rstrip()
       +                if just_warn:
       +                        ui.warn("warning: " + msg + "\n")
       +                else:
       +                        raise util.Abort(msg)
       +        return
       +
       +#######################################################################
       +# Mercurial commands
       +
       +# every command must take a ui and and repo as arguments.
       +# opts is a dict where you can find other command line flags
       +#
       +# Other parameters are taken in order from items on the command line that
       +# don't start with a dash.  If no default value is given in the parameter list,
       +# they are required.
       +#
       +
       +def change(ui, repo, *pats, **opts):
       +        """create or edit a change list
       +
       +        Create or edit a change list.
       +        A change list is a group of files to be reviewed and submitted together,
       +        plus a textual description of the change.
       +        Change lists are referred to by simple alphanumeric names.
       +
       +        Changes must be reviewed before they can be submitted.
       +
       +        In the absence of options, the change command opens the
       +        change list for editing in the default editor.
       +
       +        Deleting a change with the -d or -D flag does not affect
       +        the contents of the files listed in that change.  To revert
       +        the files listed in a change, use
       +
       +                hg revert @123456
       +
       +        before running hg change -d 123456.
       +        """
       +
       +        dirty = {}
       +        if len(pats) > 0 and GoodCLName(pats[0]):
       +                name = pats[0]
       +                if len(pats) != 1:
       +                        return "cannot specify CL name and file patterns"
       +                pats = pats[1:]
       +                cl, err = LoadCL(ui, repo, name, web=True)
       +                if err != '':
       +                        return err
       +                if not cl.local and (opts["stdin"] or not opts["stdout"]):
       +                        return "cannot change non-local CL " + name
       +        else:
       +                name = "new"
       +                cl = CL("new")
       +                dirty[cl] = True
       +                files = ChangedFiles(ui, repo, pats, opts)
       +                taken = TakenFiles(ui, repo)
       +                files = Sub(files, taken)
       +
       +        if opts["delete"] or opts["deletelocal"]:
       +                if opts["delete"] and opts["deletelocal"]:
       +                        return "cannot use -d and -D together"
       +                flag = "-d"
       +                if opts["deletelocal"]:
       +                        flag = "-D"
       +                if name == "new":
       +                        return "cannot use "+flag+" with file patterns"
       +                if opts["stdin"] or opts["stdout"]:
       +                        return "cannot use "+flag+" with -i or -o"
       +                if not cl.local:
       +                        return "cannot change non-local CL " + name
       +                if opts["delete"]:
       +                        if cl.copied_from:
       +                                return "original author must delete CL; hg change -D will remove locally"
       +                        PostMessage(ui, cl.name, "*** Abandoned ***")
       +                        EditDesc(cl.name, closed="checked")
       +                cl.Delete(ui, repo)
       +                return
       +
       +        if opts["stdin"]:
       +                s = sys.stdin.read()
       +                clx, line, err = ParseCL(s, name)
       +                if err != '':
       +                        return "error parsing change list: line %d: %s" % (line, err)
       +                if clx.desc is not None:
       +                        cl.desc = clx.desc;
       +                        dirty[cl] = True
       +                if clx.reviewer is not None:
       +                        cl.reviewer = clx.reviewer
       +                        dirty[cl] = True
       +                if clx.cc is not None:
       +                        cl.cc = clx.cc
       +                        dirty[cl] = True
       +                if clx.files is not None:
       +                        cl.files = clx.files
       +                        dirty[cl] = True
       +
       +        if not opts["stdin"] and not opts["stdout"]:
       +                if name == "new":
       +                        cl.files = files
       +                err = EditCL(ui, repo, cl)
       +                if err != "":
       +                        return err
       +                dirty[cl] = True
       +
       +        for d, _ in dirty.items():
       +                d.Flush(ui, repo)
       +
       +        if opts["stdout"]:
       +                ui.write(cl.EditorText())
       +        elif name == "new":
       +                if ui.quiet:
       +                        ui.write(cl.name)
       +                else:
       +                        ui.write("CL created: " + cl.url + "\n")
       +        return
       +
       +def code_login(ui, repo, **opts):
       +        """log in to code review server
       +
       +        Logs in to the code review server, saving a cookie in
       +        a file in your home directory.
       +        """
       +        MySend(None)
       +
       +def clpatch(ui, repo, clname, **opts):
       +        """import a patch from the code review server
       +
       +        Imports a patch from the code review server into the local client.
       +        If the local client has already modified any of the files that the
       +        patch modifies, this command will refuse to apply the patch.
       +
       +        Submitting an imported patch will keep the original author's
       +        name as the Author: line but add your own name to a Committer: line.
       +        """
       +        cl, patch, err = DownloadCL(ui, repo, clname)
       +        argv = ["hgpatch"]
       +        if opts["no_incoming"]:
       +                argv += ["--checksync=false"]
       +        if err != "":
       +                return err
       +        try:
       +                cmd = subprocess.Popen(argv, shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=None, close_fds=True)
       +        except:
       +                return "hgpatch: " + ExceptionDetail()
       +        if os.fork() == 0:
       +                cmd.stdin.write(patch)
       +                os._exit(0)
       +        cmd.stdin.close()
       +        out = cmd.stdout.read()
       +        if cmd.wait() != 0 and not opts["ignore_hgpatch_failure"]:
       +                return "hgpatch failed"
       +        cl.local = True
       +        cl.files = out.strip().split()
       +        files = ChangedFiles(ui, repo, [], opts)
       +        extra = Sub(cl.files, files)
       +        if extra:
       +                ui.warn("warning: these files were listed in the patch but not changed:\n\t" + "\n\t".join(extra) + "\n")
       +        cl.Flush(ui, repo)
       +        ui.write(cl.PendingText() + "\n")
       +
       +def download(ui, repo, clname, **opts):
       +        """download a change from the code review server
       +
       +        Download prints a description of the given change list
       +        followed by its diff, downloaded from the code review server.
       +        """
       +        cl, patch, err = DownloadCL(ui, repo, clname)
       +        if err != "":
       +                return err
       +        ui.write(cl.EditorText() + "\n")
       +        ui.write(patch + "\n")
       +        return
       +
       +def file(ui, repo, clname, pat, *pats, **opts):
       +        """assign files to or remove files from a change list
       +
       +        Assign files to or (with -d) remove files from a change list.
       +
       +        The -d option only removes files from the change list.
       +        It does not edit them or remove them from the repository.
       +        """
       +        pats = tuple([pat] + list(pats))
       +        if not GoodCLName(clname):
       +                return "invalid CL name " + clname
       +
       +        dirty = {}
       +        cl, err = LoadCL(ui, repo, clname, web=False)
       +        if err != '':
       +                return err
       +        if not cl.local:
       +                return "cannot change non-local CL " + clname
       +
       +        files = ChangedFiles(ui, repo, pats, opts)
       +
       +        if opts["delete"]:
       +                oldfiles = Intersect(files, cl.files)
       +                if oldfiles:
       +                        if not ui.quiet:
       +                                ui.status("# Removing files from CL.  To undo:\n")
       +                                ui.status("#        cd %s\n" % (repo.root))
       +                                for f in oldfiles:
       +                                        ui.status("#        hg file %s %s\n" % (cl.name, f))
       +                        cl.files = Sub(cl.files, oldfiles)
       +                        cl.Flush(ui, repo)
       +                else:
       +                        ui.status("no such files in CL")
       +                return
       +
       +        if not files:
       +                return "no such modified files"
       +
       +        files = Sub(files, cl.files)
       +        taken = Taken(ui, repo)
       +        warned = False
       +        for f in files:
       +                if f in taken:
       +                        if not warned and not ui.quiet:
       +                                ui.status("# Taking files from other CLs.  To undo:\n")
       +                                ui.status("#        cd %s\n" % (repo.root))
       +                                warned = True
       +                        ocl = taken[f]
       +                        if not ui.quiet:
       +                                ui.status("#        hg file %s %s\n" % (ocl.name, f))
       +                        if ocl not in dirty:
       +                                ocl.files = Sub(ocl.files, files)
       +                                dirty[ocl] = True
       +        cl.files = Add(cl.files, files)
       +        dirty[cl] = True
       +        for d, _ in dirty.items():
       +                d.Flush(ui, repo)
       +        return
       +
       +def gofmt(ui, repo, *pats, **opts):
       +        """apply gofmt to modified files
       +
       +        Applies gofmt to the modified files in the repository that match
       +        the given patterns.
       +        """
       +        files = ChangedExistingFiles(ui, repo, pats, opts)
       +        files = [f for f in files if f.endswith(".go")]
       +        if not files:
       +                return "no modified go files"
       +        cwd = os.getcwd()
       +        files = [RelativePath(repo.root + '/' + f, cwd) for f in files]
       +        try:
       +                cmd = ["gofmt", "-l"]
       +                if not opts["list"]:
       +                        cmd += ["-w"]
       +                if os.spawnvp(os.P_WAIT, "gofmt", cmd + files) != 0:
       +                        raise util.Abort("gofmt did not exit cleanly")
       +        except error.Abort, e:
       +                raise
       +        except:
       +                raise util.Abort("gofmt: " + ExceptionDetail())
       +        return
       +
       +def mail(ui, repo, *pats, **opts):
       +        """mail a change for review
       +
       +        Uploads a patch to the code review server and then sends mail
       +        to the reviewer and CC list asking for a review.
       +        """
       +        cl, err = CommandLineCL(ui, repo, pats, opts, defaultcc=defaultcc)
       +        if err != "":
       +                return err
       +        cl.Upload(ui, repo, gofmt_just_warn=True)
       +        if not cl.reviewer and not cl.cc:
       +                return "no reviewers listed in CL"
       +        cl.Mail(ui, repo)
       +
       +def nocommit(ui, repo, *pats, **opts):
       +        """(disabled when using this extension)"""
       +        return "The codereview extension is enabled; do not use commit."
       +
       +def pending(ui, repo, *pats, **opts):
       +        """show pending changes
       +
       +        Lists pending changes followed by a list of unassigned but modified files.
       +        """
       +        m = LoadAllCL(ui, repo, web=True)
       +        names = m.keys()
       +        names.sort()
       +        for name in names:
       +                cl = m[name]
       +                ui.write(cl.PendingText() + "\n")
       +
       +        files = DefaultFiles(ui, repo, [], opts)
       +        if len(files) > 0:
       +                s = "Changed files not in any CL:\n"
       +                for f in files:
       +                        s += "\t" + f + "\n"
       +                ui.write(s)
       +
       +def reposetup(ui, repo):
       +        global original_match
       +        if original_match is None:
       +                original_match = cmdutil.match
       +                cmdutil.match = ReplacementForCmdutilMatch
       +                RietveldSetup(ui, repo)
       +
       +def CheckContributor(ui, repo, user=None):
       +        if not user:
       +                user = ui.config("ui", "username")
       +                if not user:
       +                        raise util.Abort("[ui] username is not configured in .hgrc")
       +        _, userline = FindContributor(ui, repo, user, warn=False)
       +        if not userline:
       +                raise util.Abort("cannot find %s in CONTRIBUTORS" % (user,))
       +        return userline
       +
       +def FindContributor(ui, repo, user, warn=True):
       +        try:
       +                f = open(repo.root + '/CONTRIBUTORS', 'r')
       +        except:
       +                raise util.Abort("cannot open %s: %s" % (repo.root+'/CONTRIBUTORS', ExceptionDetail()))
       +        for line in f.readlines():
       +                line = line.rstrip()
       +                if line.startswith('#'):
       +                        continue
       +                match = re.match(r"(.*) <(.*)>", line)
       +                if not match:
       +                        continue
       +                if line == user or match.group(2).lower() == user.lower():
       +                        return match.group(2), line
       +        if warn:
       +                ui.warn("warning: cannot find %s in CONTRIBUTORS\n" % (user,))
       +        return None, None
       +
       +def submit(ui, repo, *pats, **opts):
       +        """submit change to remote repository
       +
       +        Submits change to remote repository.
       +        Bails out if the local repository is not in sync with the remote one.
       +        """
       +        repo.ui.quiet = True
       +        if not opts["no_incoming"] and Incoming(ui, repo, opts):
       +                return "local repository out of date; must sync before submit"
       +
       +        cl, err = CommandLineCL(ui, repo, pats, opts, defaultcc=defaultcc)
       +        if err != "":
       +                return err
       +
       +        user = None
       +        if cl.copied_from:
       +                user = cl.copied_from
       +        userline = CheckContributor(ui, repo, user)
       +
       +        about = ""
       +        if cl.reviewer:
       +                about += "R=" + JoinComma([CutDomain(s) for s in cl.reviewer]) + "\n"
       +        if opts.get('tbr'):
       +                tbr = SplitCommaSpace(opts.get('tbr'))
       +                cl.reviewer = Add(cl.reviewer, tbr)
       +                about += "TBR=" + JoinComma([CutDomain(s) for s in tbr]) + "\n"
       +        if cl.cc:
       +                about += "CC=" + JoinComma([CutDomain(s) for s in cl.cc]) + "\n"
       +
       +        if not cl.reviewer:
       +                return "no reviewers listed in CL"
       +
       +        if not cl.local:
       +                return "cannot submit non-local CL"
       +
       +        # upload, to sync current patch and also get change number if CL is new.
       +        if not cl.copied_from:
       +                cl.Upload(ui, repo, gofmt_just_warn=True)
       +
       +        # check gofmt for real; allowed upload to warn in order to save CL.
       +        cl.Flush(ui, repo)
       +        CheckGofmt(ui, repo, cl.files)
       +
       +        about += "%s%s\n" % (server_url_base, cl.name)
       +
       +        if cl.copied_from:
       +                about += "\nCommitter: " + CheckContributor(ui, repo, None) + "\n"
       +
       +        if not cl.mailed and not cl.copied_from:                # in case this is TBR
       +                cl.Mail(ui, repo)
       +
       +        # submit changes locally
       +        date = opts.get('date')
       +        if date:
       +                opts['date'] = util.parsedate(date)
       +        opts['message'] = cl.desc.rstrip() + "\n\n" + about
       +
       +        if opts['dryrun']:
       +                print "NOT SUBMITTING:"
       +                print "User: ", userline
       +                print "Message:"
       +                print Indent(opts['message'], "\t")
       +                print "Files:"
       +                print Indent('\n'.join(cl.files), "\t")
       +                return "dry run; not submitted"
       +
       +        m = match.exact(repo.root, repo.getcwd(), cl.files)
       +        node = repo.commit(opts['message'], userline, opts.get('date'), m)
       +        if not node:
       +                return "nothing changed"
       +
       +        # push to remote; if it fails for any reason, roll back
       +        try:
       +                log = repo.changelog
       +                rev = log.rev(node)
       +                parents = log.parentrevs(rev)
       +                if (rev-1 not in parents and
       +                                (parents == (nullrev, nullrev) or
       +                                len(log.heads(log.node(parents[0]))) > 1 and
       +                                (parents[1] == nullrev or len(log.heads(log.node(parents[1]))) > 1))):
       +                        # created new head
       +                        raise util.Abort("local repository out of date; must sync before submit")
       +
       +                # push changes to remote.
       +                # if it works, we're committed.
       +                # if not, roll back
       +                other = getremote(ui, repo, opts)
       +                r = repo.push(other, False, None)
       +                if r == 0:
       +                        raise util.Abort("local repository out of date; must sync before submit")
       +        except:
       +                repo.rollback()
       +                raise
       +
       +        # we're committed. upload final patch, close review, add commit message
       +        changeURL = short(node)
       +        url = other.url()
       +        m = re.match("^https?://([^@/]+@)?([^.]+)\.googlecode\.com/hg/", url)
       +        if m:
       +                changeURL = "http://code.google.com/p/%s/source/detail?r=%s" % (m.group(2), changeURL)
       +        else:
       +                print >>sys.stderr, "URL: ", url
       +        pmsg = "*** Submitted as " + changeURL + " ***\n\n" + opts['message']
       +
       +        # When posting, move reviewers to CC line,
       +        # so that the issue stops showing up in their "My Issues" page.
       +        PostMessage(ui, cl.name, pmsg, reviewers="", cc=JoinComma(cl.reviewer+cl.cc))
       +
       +        if not cl.copied_from:
       +                EditDesc(cl.name, closed="checked")
       +        cl.Delete(ui, repo)
       +
       +def sync(ui, repo, **opts):
       +        """synchronize with remote repository
       +
       +        Incorporates recent changes from the remote repository
       +        into the local repository.
       +        """
       +        if not opts["local"]:
       +                ui.status = sync_note
       +                ui.note = sync_note
       +                other = getremote(ui, repo, opts)
       +                modheads = repo.pull(other)
       +                err = commands.postincoming(ui, repo, modheads, True, "tip")
       +                if err:
       +                        return err
       +        commands.update(ui, repo)
       +        sync_changes(ui, repo)
       +
       +def sync_note(msg):
       +        # we run sync (pull -u) in verbose mode to get the
       +        # list of files being updated, but that drags along
       +        # a bunch of messages we don't care about.
       +        # omit them.
       +        if msg == 'resolving manifests\n':
       +                return
       +        if msg == 'searching for changes\n':
       +                return
       +        if msg == "couldn't find merge tool hgmerge\n":
       +                return
       +        sys.stdout.write(msg)
       +
       +def sync_changes(ui, repo):
       +        # Look through recent change log descriptions to find
       +        # potential references to http://.*/our-CL-number.
       +        # Double-check them by looking at the Rietveld log.
       +        def Rev(rev):
       +                desc = repo[rev].description().strip()
       +                for clname in re.findall('(?m)^http://(?:[^\n]+)/([0-9]+)$', desc):
       +                        if IsLocalCL(ui, repo, clname) and IsRietveldSubmitted(ui, clname, repo[rev].hex()):
       +                                ui.warn("CL %s submitted as %s; closing\n" % (clname, repo[rev]))
       +                                cl, err = LoadCL(ui, repo, clname, web=False)
       +                                if err != "":
       +                                        ui.warn("loading CL %s: %s\n" % (clname, err))
       +                                        continue
       +                                if not cl.copied_from:
       +                                        EditDesc(cl.name, closed="checked")
       +                                cl.Delete(ui, repo)
       +
       +        if hgversion < '1.4':
       +                get = util.cachefunc(lambda r: repo[r].changeset())
       +                changeiter, matchfn = cmdutil.walkchangerevs(ui, repo, [], get, {'rev': None})
       +                n = 0
       +                for st, rev, fns in changeiter:
       +                        if st != 'iter':
       +                                continue
       +                        n += 1
       +                        if n > 100:
       +                                break
       +                        Rev(rev)
       +        else:
       +                matchfn = cmdutil.match(repo, [], {'rev': None})
       +                def prep(ctx, fns):
       +                        pass
       +                for ctx in cmdutil.walkchangerevs(repo, matchfn, {'rev': None}, prep):
       +                        Rev(ctx.rev())
       +
       +        # Remove files that are not modified from the CLs in which they appear.
       +        all = LoadAllCL(ui, repo, web=False)
       +        changed = ChangedFiles(ui, repo, [], {})
       +        for _, cl in all.items():
       +                extra = Sub(cl.files, changed)
       +                if extra:
       +                        ui.warn("Removing unmodified files from CL %s:\n" % (cl.name,))
       +                        for f in extra:
       +                                ui.warn("\t%s\n" % (f,))
       +                        cl.files = Sub(cl.files, extra)
       +                        cl.Flush(ui, repo)
       +                if not cl.files:
       +                        ui.warn("CL %s has no files; suggest hg change -d %s\n" % (cl.name, cl.name))
       +        return
       +
       +def uisetup(ui):
       +        if "^commit|ci" in commands.table:
       +                commands.table["^commit|ci"] = (nocommit, [], "")
       +
       +def upload(ui, repo, name, **opts):
       +        """upload diffs to the code review server
       +
       +        Uploads the current modifications for a given change to the server.
       +        """
       +        repo.ui.quiet = True
       +        cl, err = LoadCL(ui, repo, name, web=True)
       +        if err != "":
       +                return err
       +        if not cl.local:
       +                return "cannot upload non-local change"
       +        cl.Upload(ui, repo)
       +        print "%s%s\n" % (server_url_base, cl.name)
       +        return
       +
       +review_opts = [
       +        ('r', 'reviewer', '', 'add reviewer'),
       +        ('', 'cc', '', 'add cc'),
       +        ('', 'tbr', '', 'add future reviewer'),
       +        ('m', 'message', '', 'change description (for new change)'),
       +]
       +
       +cmdtable = {
       +        # The ^ means to show this command in the help text that
       +        # is printed when running hg with no arguments.
       +        "^change": (
       +                change,
       +                [
       +                        ('d', 'delete', None, 'delete existing change list'),
       +                        ('D', 'deletelocal', None, 'delete locally, but do not change CL on server'),
       +                        ('i', 'stdin', None, 'read change list from standard input'),
       +                        ('o', 'stdout', None, 'print change list to standard output'),
       +                ],
       +                "[-d | -D] [-i] [-o] change# or FILE ..."
       +        ),
       +        "^clpatch": (
       +                clpatch,
       +                [
       +                        ('', 'ignore_hgpatch_failure', None, 'create CL metadata even if hgpatch fails'),
       +                        ('', 'no_incoming', None, 'disable check for incoming changes'),
       +                ],
       +                "change#"
       +        ),
       +        # Would prefer to call this codereview-login, but then
       +        # hg help codereview prints the help for this command
       +        # instead of the help for the extension.
       +        "code-login": (
       +                code_login,
       +                [],
       +                "",
       +        ),
       +        "commit|ci": (
       +                nocommit,
       +                [],
       +                "",
       +        ),
       +        "^download": (
       +                download,
       +                [],
       +                "change#"
       +        ),
       +        "^file": (
       +                file,
       +                [
       +                        ('d', 'delete', None, 'delete files from change list (but not repository)'),
       +                ],
       +                "[-d] change# FILE ..."
       +        ),
       +        "^gofmt": (
       +                gofmt,
       +                [
       +                        ('l', 'list', None, 'list files that would change, but do not edit them'),
       +                ],
       +                "FILE ..."
       +        ),
       +        "^pending|p": (
       +                pending,
       +                [],
       +                "[FILE ...]"
       +        ),
       +        "^mail": (
       +                mail,
       +                review_opts + [
       +                ] + commands.walkopts,
       +                "[-r reviewer] [--cc cc] [change# | file ...]"
       +        ),
       +        "^submit": (
       +                submit,
       +                review_opts + [
       +                        ('', 'no_incoming', None, 'disable initial incoming check (for testing)'),
       +                        ('n', 'dryrun', None, 'make change only locally (for testing)'),
       +                ] + commands.walkopts + commands.commitopts + commands.commitopts2,
       +                "[-r reviewer] [--cc cc] [change# | file ...]"
       +        ),
       +        "^sync": (
       +                sync,
       +                [
       +                        ('', 'local', None, 'do not pull changes from remote repository')
       +                ],
       +                "[--local]",
       +        ),
       +        "^upload": (
       +                upload,
       +                [],
       +                "change#"
       +        ),
       +}
       +
       +
       +#######################################################################
       +# Wrappers around upload.py for interacting with Rietveld
       +
       +# HTML form parser
       +class FormParser(HTMLParser):
       +        def __init__(self):
       +                self.map = {}
       +                self.curtag = None
       +                self.curdata = None
       +                HTMLParser.__init__(self)
       +        def handle_starttag(self, tag, attrs):
       +                if tag == "input":
       +                        key = None
       +                        value = ''
       +                        for a in attrs:
       +                                if a[0] == 'name':
       +                                        key = a[1]
       +                                if a[0] == 'value':
       +                                        value = a[1]
       +                        if key is not None:
       +                                self.map[key] = value
       +                if tag == "textarea":
       +                        key = None
       +                        for a in attrs:
       +                                if a[0] == 'name':
       +                                        key = a[1]
       +                        if key is not None:
       +                                self.curtag = key
       +                                self.curdata = ''
       +        def handle_endtag(self, tag):
       +                if tag == "textarea" and self.curtag is not None:
       +                        self.map[self.curtag] = self.curdata
       +                        self.curtag = None
       +                        self.curdata = None
       +        def handle_charref(self, name):
       +                self.handle_data(unichr(int(name)))
       +        def handle_entityref(self, name):
       +                import htmlentitydefs
       +                if name in htmlentitydefs.entitydefs:
       +                        self.handle_data(htmlentitydefs.entitydefs[name])
       +                else:
       +                        self.handle_data("&" + name + ";")
       +        def handle_data(self, data):
       +                if self.curdata is not None:
       +                        self.curdata += data.decode("utf-8").encode("utf-8")
       +
       +# XML parser
       +def XMLGet(ui, path):
       +        try:
       +                data = MySend(path, force_auth=False);
       +        except:
       +                ui.warn("XMLGet %s: %s\n" % (path, ExceptionDetail()))
       +                return None
       +        return ET.XML(data)
       +
       +def IsRietveldSubmitted(ui, clname, hex):
       +        feed = XMLGet(ui, "/rss/issue/" + clname)
       +        if feed is None:
       +                return False
       +        for sum in feed.findall("{http://www.w3.org/2005/Atom}entry/{http://www.w3.org/2005/Atom}summary"):
       +                text = sum.findtext("", None).strip()
       +                m = re.match('\*\*\* Submitted as [^*]*?([0-9a-f]+) \*\*\*', text)
       +                if m is not None and len(m.group(1)) >= 8 and hex.startswith(m.group(1)):
       +                        return True
       +        return False
       +
       +def DownloadCL(ui, repo, clname):
       +        cl, err = LoadCL(ui, repo, clname)
       +        if err != "":
       +                return None, None, "error loading CL %s: %s" % (clname, ExceptionDetail())
       +
       +        # Grab RSS feed to learn about CL
       +        feed = XMLGet(ui, "/rss/issue/" + clname)
       +        if feed is None:
       +                return None, None, "cannot download CL"
       +
       +        # Find most recent diff
       +        diff = None
       +        prefix = 'http://' + server + '/'
       +        for link in feed.findall("{http://www.w3.org/2005/Atom}entry/{http://www.w3.org/2005/Atom}link"):
       +                if link.get('rel') != 'alternate':
       +                        continue
       +                text = link.get('href')
       +                if not text.startswith(prefix) or not text.endswith('.diff'):
       +                        continue
       +                diff = text[len(prefix)-1:]
       +        if diff is None:
       +                return None, None, "CL has no diff"
       +        diffdata = MySend(diff, force_auth=False)
       +
       +        # Find author - first entry will be author who created CL.
       +        nick = None
       +        for author in feed.findall("{http://www.w3.org/2005/Atom}entry/{http://www.w3.org/2005/Atom}author/{http://www.w3.org/2005/Atom}name"):
       +                nick = author.findtext("", None).strip()
       +                break
       +        if not nick:
       +                return None, None, "CL has no author"
       +
       +        # The author is just a nickname: get the real email address.
       +        try:
       +                # want URL-encoded nick, but without a=, and rietveld rejects + for %20.
       +                url = "/user_popup/" + urllib.urlencode({"a": nick})[2:].replace("+", "%20")
       +                data = MySend(url, force_auth=False)
       +        except:
       +                ui.warn("error looking up %s: %s\n" % (nick, ExceptionDetail()))
       +                cl.copied_from = nick+"@needtofix"
       +                return cl, diffdata, ""
       +        match = re.match(r"<b>(.*) \((.*)\)</b>", data)
       +        if not match:
       +                return None, None, "error looking up %s: cannot parse result %s" % (nick, repr(data))
       +        if match.group(1) != nick and match.group(2) != nick:
       +                return None, None, "error looking up %s: got info for %s, %s" % (nick, match.group(1), match.group(2))
       +        email = match.group(1)
       +
       +        # Print warning if email is not in CONTRIBUTORS file.
       +        FindContributor(ui, repo, email)
       +        cl.copied_from = email
       +
       +        return cl, diffdata, ""
       +
       +def MySend(request_path, payload=None,
       +           content_type="application/octet-stream",
       +           timeout=None, force_auth=True,
       +           **kwargs):
       +     """Run MySend1 maybe twice, because Rietveld is unreliable."""
       +     try:
       +         return MySend1(request_path, payload, content_type, timeout, force_auth, **kwargs)
       +     except Exception, e:
       +         if type(e) == urllib2.HTTPError and e.code == 403:        # forbidden, it happens
       +                 raise
       +         print >>sys.stderr, "Loading "+request_path+": "+ExceptionDetail()+"; trying again in 2 seconds."
       +     time.sleep(2)
       +     return MySend1(request_path, payload, content_type, timeout, force_auth, **kwargs)
       +
       +
       +# Like upload.py Send but only authenticates when the
       +# redirect is to www.google.com/accounts.  This keeps
       +# unnecessary redirects from happening during testing.
       +def MySend1(request_path, payload=None,
       +           content_type="application/octet-stream",
       +           timeout=None, force_auth=True,
       +           **kwargs):
       +    """Sends an RPC and returns the response.
       +
       +    Args:
       +      request_path: The path to send the request to, eg /api/appversion/create.
       +      payload: The body of the request, or None to send an empty request.
       +      content_type: The Content-Type header to use.
       +      timeout: timeout in seconds; default None i.e. no timeout.
       +        (Note: for large requests on OS X, the timeout doesn't work right.)
       +      kwargs: Any keyword arguments are converted into query string parameters.
       +
       +    Returns:
       +      The response body, as a string.
       +    """
       +    # TODO: Don't require authentication.  Let the server say
       +    # whether it is necessary.
       +    global rpc
       +    if rpc == None:
       +            rpc = GetRpcServer(upload_options)
       +    self = rpc
       +    if not self.authenticated and force_auth:
       +      self._Authenticate()
       +    if request_path is None:
       +      return
       +
       +    old_timeout = socket.getdefaulttimeout()
       +    socket.setdefaulttimeout(timeout)
       +    try:
       +      tries = 0
       +      while True:
       +        tries += 1
       +        args = dict(kwargs)
       +        url = "http://%s%s" % (self.host, request_path)
       +        if args:
       +          url += "?" + urllib.urlencode(args)
       +        req = self._CreateRequest(url=url, data=payload)
       +        req.add_header("Content-Type", content_type)
       +        try:
       +          f = self.opener.open(req)
       +          response = f.read()
       +          f.close()
       +          # Translate \r\n into \n, because Rietveld doesn't.
       +          response = response.replace('\r\n', '\n')
       +          return response
       +        except urllib2.HTTPError, e:
       +          if tries > 3:
       +            raise
       +          elif e.code == 401:
       +            self._Authenticate()
       +          elif e.code == 302:
       +            loc = e.info()["location"]
       +            if not loc.startswith('https://www.google.com/a') or loc.find('/ServiceLogin') < 0:
       +              return ''
       +            self._Authenticate()
       +          else:
       +            raise
       +    finally:
       +      socket.setdefaulttimeout(old_timeout)
       +
       +def GetForm(url):
       +        f = FormParser()
       +        f.feed(MySend(url))
       +        f.close()
       +        for k,v in f.map.items():
       +                f.map[k] = v.replace("\r\n", "\n");
       +        return f.map
       +
       +# Fetch the settings for the CL, like reviewer and CC list, by
       +# scraping the Rietveld editing forms.
       +def GetSettings(issue):
       +        # The /issue/edit page has everything but only the
       +        # CL owner is allowed to fetch it (and submit it).
       +        f = None
       +        try:
       +                f = GetForm("/" + issue + "/edit")
       +        except:
       +                pass
       +        if not f or 'reviewers' not in f:
       +                # Maybe we're not the CL owner.  Fall back to the
       +                # /publish page, which has the reviewer and CC lists,
       +                # and then fetch the description separately.
       +                f = GetForm("/" + issue + "/publish")
       +                f['description'] = MySend("/"+issue+"/description", force_auth=False)
       +        return f
       +
       +def EditDesc(issue, subject=None, desc=None, reviewers=None, cc=None, closed=None):
       +        form_fields = GetForm("/" + issue + "/edit")
       +        if subject is not None:
       +                form_fields['subject'] = subject
       +        if desc is not None:
       +                form_fields['description'] = desc
       +        if reviewers is not None:
       +                form_fields['reviewers'] = reviewers
       +        if cc is not None:
       +                form_fields['cc'] = cc
       +        if closed is not None:
       +                form_fields['closed'] = closed
       +        ctype, body = EncodeMultipartFormData(form_fields.items(), [])
       +        response = MySend("/" + issue + "/edit", body, content_type=ctype)
       +        if response != "":
       +                print >>sys.stderr, "Error editing description:\n" + "Sent form: \n", form_fields, "\n", response
       +                sys.exit(2)
       +
       +def PostMessage(ui, issue, message, reviewers=None, cc=None, send_mail=True, subject=None):
       +        form_fields = GetForm("/" + issue + "/publish")
       +        if reviewers is not None:
       +                form_fields['reviewers'] = reviewers
       +        if cc is not None:
       +                form_fields['cc'] = cc
       +        if send_mail:
       +                form_fields['send_mail'] = "checked"
       +        else:
       +                del form_fields['send_mail']
       +        if subject is not None:
       +                form_fields['subject'] = subject
       +        form_fields['message'] = message
       +        
       +        form_fields['message_only'] = '1'        # Don't include draft comments
       +        if reviewers is not None or cc is not None:
       +                form_fields['message_only'] = ''        # Must set '' in order to override cc/reviewer
       +        ctype = "applications/x-www-form-urlencoded"
       +        body = urllib.urlencode(form_fields)
       +        response = MySend("/" + issue + "/publish", body, content_type=ctype)
       +        if response != "":
       +                print response
       +                sys.exit(2)
       +
       +class opt(object):
       +        pass
       +
       +def RietveldSetup(ui, repo):
       +        global defaultcc, upload_options, rpc, server, server_url_base, force_google_account, verbosity
       +
       +        # Read repository-specific options from lib/codereview/codereview.cfg
       +        try:
       +                f = open(repo.root + '/lib/codereview/codereview.cfg')
       +                for line in f:
       +                        if line.startswith('defaultcc: '):
       +                                defaultcc = SplitCommaSpace(line[10:])
       +        except:
       +                pass
       +
       +        # TODO(rsc): If the repository config has no codereview section,
       +        # do not enable the extension.  This allows users to
       +        # put the extension in their global .hgrc but only
       +        # enable it for some repositories.
       +        # if not ui.has_section("codereview"):
       +        #         cmdtable = {}
       +        #         return
       +
       +        if not ui.verbose:
       +                verbosity = 0
       +
       +        # Config options.
       +        x = ui.config("codereview", "server")
       +        if x is not None:
       +                server = x
       +
       +        # TODO(rsc): Take from ui.username?
       +        email = None
       +        x = ui.config("codereview", "email")
       +        if x is not None:
       +                email = x
       +
       +        server_url_base = "http://" + server + "/"
       +
       +        testing = ui.config("codereview", "testing")
       +        force_google_account = ui.configbool("codereview", "force_google_account", False)
       +
       +        upload_options = opt()
       +        upload_options.email = email
       +        upload_options.host = None
       +        upload_options.verbose = 0
       +        upload_options.description = None
       +        upload_options.description_file = None
       +        upload_options.reviewers = None
       +        upload_options.cc = None
       +        upload_options.message = None
       +        upload_options.issue = None
       +        upload_options.download_base = False
       +        upload_options.revision = None
       +        upload_options.send_mail = False
       +        upload_options.vcs = None
       +        upload_options.server = server
       +        upload_options.save_cookies = True
       +
       +        if testing:
       +                upload_options.save_cookies = False
       +                upload_options.email = "test@example.com"
       +
       +        rpc = None
       +
       +#######################################################################
       +# We keep a full copy of upload.py here to avoid import path hell.
       +# It would be nice if hg added the hg repository root
       +# to the default PYTHONPATH.
       +
       +# Edit .+2,<hget http://codereview.appspot.com/static/upload.py
       +
       +#!/usr/bin/env python
       +#
       +# Copyright 2007 Google Inc.
       +#
       +# Licensed under the Apache License, Version 2.0 (the "License");
       +# you may not use this file except in compliance with the License.
       +# You may obtain a copy of the License at
       +#
       +#     http://www.apache.org/licenses/LICENSE-2.0
       +#
       +# Unless required by applicable law or agreed to in writing, software
       +# distributed under the License is distributed on an "AS IS" BASIS,
       +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       +# See the License for the specific language governing permissions and
       +# limitations under the License.
       +
       +"""Tool for uploading diffs from a version control system to the codereview app.
       +
       +Usage summary: upload.py [options] [-- diff_options]
       +
       +Diff options are passed to the diff command of the underlying system.
       +
       +Supported version control systems:
       +  Git
       +  Mercurial
       +  Subversion
       +
       +It is important for Git/Mercurial users to specify a tree/node/branch to diff
       +against by using the '--rev' option.
       +"""
       +# This code is derived from appcfg.py in the App Engine SDK (open source),
       +# and from ASPN recipe #146306.
       +
       +import cookielib
       +import getpass
       +import logging
       +import mimetypes
       +import optparse
       +import os
       +import re
       +import socket
       +import subprocess
       +import sys
       +import urllib
       +import urllib2
       +import urlparse
       +
       +# The md5 module was deprecated in Python 2.5.
       +try:
       +  from hashlib import md5
       +except ImportError:
       +  from md5 import md5
       +
       +try:
       +  import readline
       +except ImportError:
       +  pass
       +
       +# The logging verbosity:
       +#  0: Errors only.
       +#  1: Status messages.
       +#  2: Info logs.
       +#  3: Debug logs.
       +verbosity = 1
       +
       +# Max size of patch or base file.
       +MAX_UPLOAD_SIZE = 900 * 1024
       +
       +# Constants for version control names.  Used by GuessVCSName.
       +VCS_GIT = "Git"
       +VCS_MERCURIAL = "Mercurial"
       +VCS_SUBVERSION = "Subversion"
       +VCS_UNKNOWN = "Unknown"
       +
       +# whitelist for non-binary filetypes which do not start with "text/"
       +# .mm (Objective-C) shows up as application/x-freemind on my Linux box.
       +TEXT_MIMETYPES = ['application/javascript', 'application/x-javascript',
       +                  'application/x-freemind']
       +
       +VCS_ABBREVIATIONS = {
       +  VCS_MERCURIAL.lower(): VCS_MERCURIAL,
       +  "hg": VCS_MERCURIAL,
       +  VCS_SUBVERSION.lower(): VCS_SUBVERSION,
       +  "svn": VCS_SUBVERSION,
       +  VCS_GIT.lower(): VCS_GIT,
       +}
       +
       +
       +def GetEmail(prompt):
       +  """Prompts the user for their email address and returns it.
       +
       +  The last used email address is saved to a file and offered up as a suggestion
       +  to the user. If the user presses enter without typing in anything the last
       +  used email address is used. If the user enters a new address, it is saved
       +  for next time we prompt.
       +
       +  """
       +  last_email_file_name = os.path.expanduser("~/.last_codereview_email_address")
       +  last_email = ""
       +  if os.path.exists(last_email_file_name):
       +    try:
       +      last_email_file = open(last_email_file_name, "r")
       +      last_email = last_email_file.readline().strip("\n")
       +      last_email_file.close()
       +      prompt += " [%s]" % last_email
       +    except IOError, e:
       +      pass
       +  email = raw_input(prompt + ": ").strip()
       +  if email:
       +    try:
       +      last_email_file = open(last_email_file_name, "w")
       +      last_email_file.write(email)
       +      last_email_file.close()
       +    except IOError, e:
       +      pass
       +  else:
       +    email = last_email
       +  return email
       +
       +
       +def StatusUpdate(msg):
       +  """Print a status message to stdout.
       +
       +  If 'verbosity' is greater than 0, print the message.
       +
       +  Args:
       +    msg: The string to print.
       +  """
       +  if verbosity > 0:
       +    print msg
       +
       +
       +def ErrorExit(msg):
       +  """Print an error message to stderr and exit."""
       +  print >>sys.stderr, msg
       +  sys.exit(1)
       +
       +
       +class ClientLoginError(urllib2.HTTPError):
       +  """Raised to indicate there was an error authenticating with ClientLogin."""
       +
       +  def __init__(self, url, code, msg, headers, args):
       +    urllib2.HTTPError.__init__(self, url, code, msg, headers, None)
       +    self.args = args
       +    self.reason = args["Error"]
       +
       +
       +class AbstractRpcServer(object):
       +  """Provides a common interface for a simple RPC server."""
       +
       +  def __init__(self, host, auth_function, host_override=None, extra_headers={},
       +               save_cookies=False):
       +    """Creates a new HttpRpcServer.
       +
       +    Args:
       +      host: The host to send requests to.
       +      auth_function: A function that takes no arguments and returns an
       +        (email, password) tuple when called. Will be called if authentication
       +        is required.
       +      host_override: The host header to send to the server (defaults to host).
       +      extra_headers: A dict of extra headers to append to every request.
       +      save_cookies: If True, save the authentication cookies to local disk.
       +        If False, use an in-memory cookiejar instead.  Subclasses must
       +        implement this functionality.  Defaults to False.
       +    """
       +    self.host = host
       +    self.host_override = host_override
       +    self.auth_function = auth_function
       +    self.authenticated = False
       +    self.extra_headers = extra_headers
       +    self.save_cookies = save_cookies
       +    self.opener = self._GetOpener()
       +    if self.host_override:
       +      logging.info("Server: %s; Host: %s", self.host, self.host_override)
       +    else:
       +      logging.info("Server: %s", self.host)
       +
       +  def _GetOpener(self):
       +    """Returns an OpenerDirector for making HTTP requests.
       +
       +    Returns:
       +      A urllib2.OpenerDirector object.
       +    """
       +    raise NotImplementedError()
       +
       +  def _CreateRequest(self, url, data=None):
       +    """Creates a new urllib request."""
       +    logging.debug("Creating request for: '%s' with payload:\n%s", url, data)
       +    req = urllib2.Request(url, data=data)
       +    if self.host_override:
       +      req.add_header("Host", self.host_override)
       +    for key, value in self.extra_headers.iteritems():
       +      req.add_header(key, value)
       +    return req
       +
       +  def _GetAuthToken(self, email, password):
       +    """Uses ClientLogin to authenticate the user, returning an auth token.
       +
       +    Args:
       +      email:    The user's email address
       +      password: The user's password
       +
       +    Raises:
       +      ClientLoginError: If there was an error authenticating with ClientLogin.
       +      HTTPError: If there was some other form of HTTP error.
       +
       +    Returns:
       +      The authentication token returned by ClientLogin.
       +    """
       +    account_type = "GOOGLE"
       +    if self.host.endswith(".google.com") and not force_google_account:
       +      # Needed for use inside Google.
       +      account_type = "HOSTED"
       +    req = self._CreateRequest(
       +        url="https://www.google.com/accounts/ClientLogin",
       +        data=urllib.urlencode({
       +            "Email": email,
       +            "Passwd": password,
       +            "service": "ah",
       +            "source": "rietveld-codereview-upload",
       +            "accountType": account_type,
       +        }),
       +    )
       +    try:
       +      response = self.opener.open(req)
       +      response_body = response.read()
       +      response_dict = dict(x.split("=")
       +                           for x in response_body.split("\n") if x)
       +      return response_dict["Auth"]
       +    except urllib2.HTTPError, e:
       +      if e.code == 403:
       +        body = e.read()
       +        response_dict = dict(x.split("=", 1) for x in body.split("\n") if x)
       +        raise ClientLoginError(req.get_full_url(), e.code, e.msg,
       +                               e.headers, response_dict)
       +      else:
       +        raise
       +
       +  def _GetAuthCookie(self, auth_token):
       +    """Fetches authentication cookies for an authentication token.
       +
       +    Args:
       +      auth_token: The authentication token returned by ClientLogin.
       +
       +    Raises:
       +      HTTPError: If there was an error fetching the authentication cookies.
       +    """
       +    # This is a dummy value to allow us to identify when we're successful.
       +    continue_location = "http://localhost/"
       +    args = {"continue": continue_location, "auth": auth_token}
       +    req = self._CreateRequest("http://%s/_ah/login?%s" %
       +                              (self.host, urllib.urlencode(args)))
       +    try:
       +      response = self.opener.open(req)
       +    except urllib2.HTTPError, e:
       +      response = e
       +    if (response.code != 302 or
       +        response.info()["location"] != continue_location):
       +      raise urllib2.HTTPError(req.get_full_url(), response.code, response.msg,
       +                              response.headers, response.fp)
       +    self.authenticated = True
       +
       +  def _Authenticate(self):
       +    """Authenticates the user.
       +
       +    The authentication process works as follows:
       +     1) We get a username and password from the user
       +     2) We use ClientLogin to obtain an AUTH token for the user
       +        (see http://code.google.com/apis/accounts/AuthForInstalledApps.html).
       +     3) We pass the auth token to /_ah/login on the server to obtain an
       +        authentication cookie. If login was successful, it tries to redirect
       +        us to the URL we provided.
       +
       +    If we attempt to access the upload API without first obtaining an
       +    authentication cookie, it returns a 401 response (or a 302) and
       +    directs us to authenticate ourselves with ClientLogin.
       +    """
       +    for i in range(3):
       +      credentials = self.auth_function()
       +      try:
       +        auth_token = self._GetAuthToken(credentials[0], credentials[1])
       +      except ClientLoginError, e:
       +        if e.reason == "BadAuthentication":
       +          print >>sys.stderr, "Invalid username or password."
       +          continue
       +        if e.reason == "CaptchaRequired":
       +          print >>sys.stderr, (
       +              "Please go to\n"
       +              "https://www.google.com/accounts/DisplayUnlockCaptcha\n"
       +              "and verify you are a human.  Then try again.")
       +          break
       +        if e.reason == "NotVerified":
       +          print >>sys.stderr, "Account not verified."
       +          break
       +        if e.reason == "TermsNotAgreed":
       +          print >>sys.stderr, "User has not agreed to TOS."
       +          break
       +        if e.reason == "AccountDeleted":
       +          print >>sys.stderr, "The user account has been deleted."
       +          break
       +        if e.reason == "AccountDisabled":
       +          print >>sys.stderr, "The user account has been disabled."
       +          break
       +        if e.reason == "ServiceDisabled":
       +          print >>sys.stderr, ("The user's access to the service has been "
       +                               "disabled.")
       +          break
       +        if e.reason == "ServiceUnavailable":
       +          print >>sys.stderr, "The service is not available; try again later."
       +          break
       +        raise
       +      self._GetAuthCookie(auth_token)
       +      return
       +
       +  def Send(self, request_path, payload=None,
       +           content_type="application/octet-stream",
       +           timeout=None,
       +           **kwargs):
       +    """Sends an RPC and returns the response.
       +
       +    Args:
       +      request_path: The path to send the request to, eg /api/appversion/create.
       +      payload: The body of the request, or None to send an empty request.
       +      content_type: The Content-Type header to use.
       +      timeout: timeout in seconds; default None i.e. no timeout.
       +        (Note: for large requests on OS X, the timeout doesn't work right.)
       +      kwargs: Any keyword arguments are converted into query string parameters.
       +
       +    Returns:
       +      The response body, as a string.
       +    """
       +    # TODO: Don't require authentication.  Let the server say
       +    # whether it is necessary.
       +    if not self.authenticated:
       +      self._Authenticate()
       +
       +    old_timeout = socket.getdefaulttimeout()
       +    socket.setdefaulttimeout(timeout)
       +    try:
       +      tries = 0
       +      while True:
       +        tries += 1
       +        args = dict(kwargs)
       +        url = "http://%s%s" % (self.host, request_path)
       +        if args:
       +          url += "?" + urllib.urlencode(args)
       +        req = self._CreateRequest(url=url, data=payload)
       +        req.add_header("Content-Type", content_type)
       +        try:
       +          f = self.opener.open(req)
       +          response = f.read()
       +          f.close()
       +          return response
       +        except urllib2.HTTPError, e:
       +          if tries > 3:
       +            raise
       +          elif e.code == 401 or e.code == 302:
       +            self._Authenticate()
       +          else:
       +            raise
       +    finally:
       +      socket.setdefaulttimeout(old_timeout)
       +
       +
       +class HttpRpcServer(AbstractRpcServer):
       +  """Provides a simplified RPC-style interface for HTTP requests."""
       +
       +  def _Authenticate(self):
       +    """Save the cookie jar after authentication."""
       +    super(HttpRpcServer, self)._Authenticate()
       +    if self.save_cookies:
       +      StatusUpdate("Saving authentication cookies to %s" % self.cookie_file)
       +      self.cookie_jar.save()
       +
       +  def _GetOpener(self):
       +    """Returns an OpenerDirector that supports cookies and ignores redirects.
       +
       +    Returns:
       +      A urllib2.OpenerDirector object.
       +    """
       +    opener = urllib2.OpenerDirector()
       +    opener.add_handler(urllib2.ProxyHandler())
       +    opener.add_handler(urllib2.UnknownHandler())
       +    opener.add_handler(urllib2.HTTPHandler())
       +    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
       +    opener.add_handler(urllib2.HTTPSHandler())
       +    opener.add_handler(urllib2.HTTPErrorProcessor())
       +    if self.save_cookies:
       +      self.cookie_file = os.path.expanduser("~/.codereview_upload_cookies_" + server)
       +      self.cookie_jar = cookielib.MozillaCookieJar(self.cookie_file)
       +      if os.path.exists(self.cookie_file):
       +        try:
       +          self.cookie_jar.load()
       +          self.authenticated = True
       +          StatusUpdate("Loaded authentication cookies from %s" %
       +                       self.cookie_file)
       +        except (cookielib.LoadError, IOError):
       +          # Failed to load cookies - just ignore them.
       +          pass
       +      else:
       +        # Create an empty cookie file with mode 600
       +        fd = os.open(self.cookie_file, os.O_CREAT, 0600)
       +        os.close(fd)
       +      # Always chmod the cookie file
       +      os.chmod(self.cookie_file, 0600)
       +    else:
       +      # Don't save cookies across runs of update.py.
       +      self.cookie_jar = cookielib.CookieJar()
       +    opener.add_handler(urllib2.HTTPCookieProcessor(self.cookie_jar))
       +    return opener
       +
       +
       +parser = optparse.OptionParser(usage="%prog [options] [-- diff_options]")
       +parser.add_option("-y", "--assume_yes", action="store_true",
       +                  dest="assume_yes", default=False,
       +                  help="Assume that the answer to yes/no questions is 'yes'.")
       +# Logging
       +group = parser.add_option_group("Logging options")
       +group.add_option("-q", "--quiet", action="store_const", const=0,
       +                 dest="verbose", help="Print errors only.")
       +group.add_option("-v", "--verbose", action="store_const", const=2,
       +                 dest="verbose", default=1,
       +                 help="Print info level logs (default).")
       +group.add_option("--noisy", action="store_const", const=3,
       +                 dest="verbose", help="Print all logs.")
       +# Review server
       +group = parser.add_option_group("Review server options")
       +group.add_option("-s", "--server", action="store", dest="server",
       +                 default="codereview.appspot.com",
       +                 metavar="SERVER",
       +                 help=("The server to upload to. The format is host[:port]. "
       +                       "Defaults to '%default'."))
       +group.add_option("-e", "--email", action="store", dest="email",
       +                 metavar="EMAIL", default=None,
       +                 help="The username to use. Will prompt if omitted.")
       +group.add_option("-H", "--host", action="store", dest="host",
       +                 metavar="HOST", default=None,
       +                 help="Overrides the Host header sent with all RPCs.")
       +group.add_option("--no_cookies", action="store_false",
       +                 dest="save_cookies", default=True,
       +                 help="Do not save authentication cookies to local disk.")
       +# Issue
       +group = parser.add_option_group("Issue options")
       +group.add_option("-d", "--description", action="store", dest="description",
       +                 metavar="DESCRIPTION", default=None,
       +                 help="Optional description when creating an issue.")
       +group.add_option("-f", "--description_file", action="store",
       +                 dest="description_file", metavar="DESCRIPTION_FILE",
       +                 default=None,
       +                 help="Optional path of a file that contains "
       +                      "the description when creating an issue.")
       +group.add_option("-r", "--reviewers", action="store", dest="reviewers",
       +                 metavar="REVIEWERS", default=None,
       +                 help="Add reviewers (comma separated email addresses).")
       +group.add_option("--cc", action="store", dest="cc",
       +                 metavar="CC", default=None,
       +                 help="Add CC (comma separated email addresses).")
       +group.add_option("--private", action="store_true", dest="private",
       +                 default=False,
       +                 help="Make the issue restricted to reviewers and those CCed")
       +# Upload options
       +group = parser.add_option_group("Patch options")
       +group.add_option("-m", "--message", action="store", dest="message",
       +                 metavar="MESSAGE", default=None,
       +                 help="A message to identify the patch. "
       +                      "Will prompt if omitted.")
       +group.add_option("-i", "--issue", type="int", action="store",
       +                 metavar="ISSUE", default=None,
       +                 help="Issue number to which to add. Defaults to new issue.")
       +group.add_option("--download_base", action="store_true",
       +                 dest="download_base", default=False,
       +                 help="Base files will be downloaded by the server "
       +                 "(side-by-side diffs may not work on files with CRs).")
       +group.add_option("--rev", action="store", dest="revision",
       +                 metavar="REV", default=None,
       +                 help="Branch/tree/revision to diff against (used by DVCS).")
       +group.add_option("--send_mail", action="store_true",
       +                 dest="send_mail", default=False,
       +                 help="Send notification email to reviewers.")
       +group.add_option("--vcs", action="store", dest="vcs",
       +                 metavar="VCS", default=None,
       +                 help=("Version control system (optional, usually upload.py "
       +                       "already guesses the right VCS)."))
       +
       +
       +def GetRpcServer(options):
       +  """Returns an instance of an AbstractRpcServer.
       +
       +  Returns:
       +    A new AbstractRpcServer, on which RPC calls can be made.
       +  """
       +
       +  rpc_server_class = HttpRpcServer
       +
       +  def GetUserCredentials():
       +    """Prompts the user for a username and password."""
       +    email = options.email
       +    if email is None:
       +      email = GetEmail("Email (login for uploading to %s)" % options.server)
       +    password = getpass.getpass("Password for %s: " % email)
       +    return (email, password)
       +
       +  # If this is the dev_appserver, use fake authentication.
       +  host = (options.host or options.server).lower()
       +  if host == "localhost" or host.startswith("localhost:"):
       +    email = options.email
       +    if email is None:
       +      email = "test@example.com"
       +      logging.info("Using debug user %s.  Override with --email" % email)
       +    server = rpc_server_class(
       +        options.server,
       +        lambda: (email, "password"),
       +        host_override=options.host,
       +        extra_headers={"Cookie":
       +                       'dev_appserver_login="%s:False"' % email},
       +        save_cookies=options.save_cookies)
       +    # Don't try to talk to ClientLogin.
       +    server.authenticated = True
       +    return server
       +
       +  return rpc_server_class(options.server, GetUserCredentials,
       +                          host_override=options.host,
       +                          save_cookies=options.save_cookies)
       +
       +
       +def EncodeMultipartFormData(fields, files):
       +  """Encode form fields for multipart/form-data.
       +
       +  Args:
       +    fields: A sequence of (name, value) elements for regular form fields.
       +    files: A sequence of (name, filename, value) elements for data to be
       +           uploaded as files.
       +  Returns:
       +    (content_type, body) ready for httplib.HTTP instance.
       +
       +  Source:
       +    http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/146306
       +  """
       +  BOUNDARY = '-M-A-G-I-C---B-O-U-N-D-A-R-Y-'
       +  CRLF = '\r\n'
       +  lines = []
       +  for (key, value) in fields:
       +    lines.append('--' + BOUNDARY)
       +    lines.append('Content-Disposition: form-data; name="%s"' % key)
       +    lines.append('')
       +    if type(value) == unicode:
       +      value = value.encode("utf-8")
       +    lines.append(value)
       +  for (key, filename, value) in files:
       +    if type(filename) == unicode:
       +      filename = filename.encode("utf-8")
       +    if type(value) == unicode:
       +      value = value.encode("utf-8")
       +    lines.append('--' + BOUNDARY)
       +    lines.append('Content-Disposition: form-data; name="%s"; filename="%s"' %
       +             (key, filename))
       +    lines.append('Content-Type: %s' % GetContentType(filename))
       +    lines.append('')
       +    lines.append(value)
       +  lines.append('--' + BOUNDARY + '--')
       +  lines.append('')
       +  body = CRLF.join(lines)
       +  content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
       +  return content_type, body
       +
       +
       +def GetContentType(filename):
       +  """Helper to guess the content-type from the filename."""
       +  return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
       +
       +
       +# Use a shell for subcommands on Windows to get a PATH search.
       +use_shell = sys.platform.startswith("win")
       +
       +def RunShellWithReturnCode(command, print_output=False,
       +                           universal_newlines=True,
       +                           env=os.environ):
       +  """Executes a command and returns the output from stdout and the return code.
       +
       +  Args:
       +    command: Command to execute.
       +    print_output: If True, the output is printed to stdout.
       +                  If False, both stdout and stderr are ignored.
       +    universal_newlines: Use universal_newlines flag (default: True).
       +
       +  Returns:
       +    Tuple (output, return code)
       +  """
       +  logging.info("Running %s", command)
       +  p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
       +                       shell=use_shell, universal_newlines=universal_newlines,
       +                       env=env)
       +  if print_output:
       +    output_array = []
       +    while True:
       +      line = p.stdout.readline()
       +      if not line:
       +        break
       +      print line.strip("\n")
       +      output_array.append(line)
       +    output = "".join(output_array)
       +  else:
       +    output = p.stdout.read()
       +  p.wait()
       +  errout = p.stderr.read()
       +  if print_output and errout:
       +    print >>sys.stderr, errout
       +  p.stdout.close()
       +  p.stderr.close()
       +  return output, p.returncode
       +
       +
       +def RunShell(command, silent_ok=False, universal_newlines=True,
       +             print_output=False, env=os.environ):
       +  data, retcode = RunShellWithReturnCode(command, print_output,
       +                                         universal_newlines, env)
       +  if retcode:
       +    ErrorExit("Got error status from %s:\n%s" % (command, data))
       +  if not silent_ok and not data:
       +    ErrorExit("No output from %s" % command)
       +  return data
       +
       +
       +class VersionControlSystem(object):
       +  """Abstract base class providing an interface to the VCS."""
       +
       +  def __init__(self, options):
       +    """Constructor.
       +
       +    Args:
       +      options: Command line options.
       +    """
       +    self.options = options
       +
       +  def GenerateDiff(self, args):
       +    """Return the current diff as a string.
       +
       +    Args:
       +      args: Extra arguments to pass to the diff command.
       +    """
       +    raise NotImplementedError(
       +        "abstract method -- subclass %s must override" % self.__class__)
       +
       +  def GetUnknownFiles(self):
       +    """Return a list of files unknown to the VCS."""
       +    raise NotImplementedError(
       +        "abstract method -- subclass %s must override" % self.__class__)
       +
       +  def CheckForUnknownFiles(self):
       +    """Show an "are you sure?" prompt if there are unknown files."""
       +    unknown_files = self.GetUnknownFiles()
       +    if unknown_files:
       +      print "The following files are not added to version control:"
       +      for line in unknown_files:
       +        print line
       +      prompt = "Are you sure to continue?(y/N) "
       +      answer = raw_input(prompt).strip()
       +      if answer != "y":
       +        ErrorExit("User aborted")
       +
       +  def GetBaseFile(self, filename):
       +    """Get the content of the upstream version of a file.
       +
       +    Returns:
       +      A tuple (base_content, new_content, is_binary, status)
       +        base_content: The contents of the base file.
       +        new_content: For text files, this is empty.  For binary files, this is
       +          the contents of the new file, since the diff output won't contain
       +          information to reconstruct the current file.
       +        is_binary: True iff the file is binary.
       +        status: The status of the file.
       +    """
       +
       +    raise NotImplementedError(
       +        "abstract method -- subclass %s must override" % self.__class__)
       +
       +
       +  def GetBaseFiles(self, diff):
       +    """Helper that calls GetBase file for each file in the patch.
       +
       +    Returns:
       +      A dictionary that maps from filename to GetBaseFile's tuple.  Filenames
       +      are retrieved based on lines that start with "Index:" or
       +      "Property changes on:".
       +    """
       +    files = {}
       +    for line in diff.splitlines(True):
       +      if line.startswith('Index:') or line.startswith('Property changes on:'):
       +        unused, filename = line.split(':', 1)
       +        # On Windows if a file has property changes its filename uses '\'
       +        # instead of '/'.
       +        filename = filename.strip().replace('\\', '/')
       +        files[filename] = self.GetBaseFile(filename)
       +    return files
       +
       +
       +  def UploadBaseFiles(self, issue, rpc_server, patch_list, patchset, options,
       +                      files):
       +    """Uploads the base files (and if necessary, the current ones as well)."""
       +
       +    def UploadFile(filename, file_id, content, is_binary, status, is_base):
       +      """Uploads a file to the server."""
       +      file_too_large = False
       +      if is_base:
       +        type = "base"
       +      else:
       +        type = "current"
       +      if len(content) > MAX_UPLOAD_SIZE:
       +        print ("Not uploading the %s file for %s because it's too large." %
       +               (type, filename))
       +        file_too_large = True
       +        content = ""
       +      checksum = md5(content).hexdigest()
       +      if options.verbose > 0 and not file_too_large:
       +        print "Uploading %s file for %s" % (type, filename)
       +      url = "/%d/upload_content/%d/%d" % (int(issue), int(patchset), file_id)
       +      form_fields = [("filename", filename),
       +                     ("status", status),
       +                     ("checksum", checksum),
       +                     ("is_binary", str(is_binary)),
       +                     ("is_current", str(not is_base)),
       +                    ]
       +      if file_too_large:
       +        form_fields.append(("file_too_large", "1"))
       +      if options.email:
       +        form_fields.append(("user", options.email))
       +      ctype, body = EncodeMultipartFormData(form_fields,
       +                                            [("data", filename, content)])
       +      response_body = rpc_server.Send(url, body,
       +                                      content_type=ctype)
       +      if not response_body.startswith("OK"):
       +        StatusUpdate("  --> %s" % response_body)
       +        sys.exit(1)
       +
       +    patches = dict()
       +    [patches.setdefault(v, k) for k, v in patch_list]
       +    for filename in patches.keys():
       +      base_content, new_content, is_binary, status = files[filename]
       +      file_id_str = patches.get(filename)
       +      if file_id_str.find("nobase") != -1:
       +        base_content = None
       +        file_id_str = file_id_str[file_id_str.rfind("_") + 1:]
       +      file_id = int(file_id_str)
       +      if base_content != None:
       +        UploadFile(filename, file_id, base_content, is_binary, status, True)
       +      if new_content != None:
       +        UploadFile(filename, file_id, new_content, is_binary, status, False)
       +
       +  def IsImage(self, filename):
       +    """Returns true if the filename has an image extension."""
       +    mimetype =  mimetypes.guess_type(filename)[0]
       +    if not mimetype:
       +      return False
       +    return mimetype.startswith("image/")
       +
       +  def IsBinary(self, filename):
       +    """Returns true if the guessed mimetyped isnt't in text group."""
       +    mimetype = mimetypes.guess_type(filename)[0]
       +    if not mimetype:
       +      return False  # e.g. README, "real" binaries usually have an extension
       +    # special case for text files which don't start with text/
       +    if mimetype in TEXT_MIMETYPES:
       +      return False
       +    return not mimetype.startswith("text/")
       +
       +
       +class SubversionVCS(VersionControlSystem):
       +  """Implementation of the VersionControlSystem interface for Subversion."""
       +
       +  def __init__(self, options):
       +    super(SubversionVCS, self).__init__(options)
       +    if self.options.revision:
       +      match = re.match(r"(\d+)(:(\d+))?", self.options.revision)
       +      if not match:
       +        ErrorExit("Invalid Subversion revision %s." % self.options.revision)
       +      self.rev_start = match.group(1)
       +      self.rev_end = match.group(3)
       +    else:
       +      self.rev_start = self.rev_end = None
       +    # Cache output from "svn list -r REVNO dirname".
       +    # Keys: dirname, Values: 2-tuple (ouput for start rev and end rev).
       +    self.svnls_cache = {}
       +    # SVN base URL is required to fetch files deleted in an older revision.
       +    # Result is cached to not guess it over and over again in GetBaseFile().
       +    required = self.options.download_base or self.options.revision is not None
       +    self.svn_base = self._GuessBase(required)
       +
       +  def GuessBase(self, required):
       +    """Wrapper for _GuessBase."""
       +    return self.svn_base
       +
       +  def _GuessBase(self, required):
       +    """Returns the SVN base URL.
       +
       +    Args:
       +      required: If true, exits if the url can't be guessed, otherwise None is
       +        returned.
       +    """
       +    info = RunShell(["svn", "info"])
       +    for line in info.splitlines():
       +      words = line.split()
       +      if len(words) == 2 and words[0] == "URL:":
       +        url = words[1]
       +        scheme, netloc, path, params, query, fragment = urlparse.urlparse(url)
       +        username, netloc = urllib.splituser(netloc)
       +        if username:
       +          logging.info("Removed username from base URL")
       +        if netloc.endswith("svn.python.org"):
       +          if netloc == "svn.python.org":
       +            if path.startswith("/projects/"):
       +              path = path[9:]
       +          elif netloc != "pythondev@svn.python.org":
       +            ErrorExit("Unrecognized Python URL: %s" % url)
       +          base = "http://svn.python.org/view/*checkout*%s/" % path
       +          logging.info("Guessed Python base = %s", base)
       +        elif netloc.endswith("svn.collab.net"):
       +          if path.startswith("/repos/"):
       +            path = path[6:]
       +          base = "http://svn.collab.net/viewvc/*checkout*%s/" % path
       +          logging.info("Guessed CollabNet base = %s", base)
       +        elif netloc.endswith(".googlecode.com"):
       +          path = path + "/"
       +          base = urlparse.urlunparse(("http", netloc, path, params,
       +                                      query, fragment))
       +          logging.info("Guessed Google Code base = %s", base)
       +        else:
       +          path = path + "/"
       +          base = urlparse.urlunparse((scheme, netloc, path, params,
       +                                      query, fragment))
       +          logging.info("Guessed base = %s", base)
       +        return base
       +    if required:
       +      ErrorExit("Can't find URL in output from svn info")
       +    return None
       +
       +  def GenerateDiff(self, args):
       +    cmd = ["svn", "diff"]
       +    if self.options.revision:
       +      cmd += ["-r", self.options.revision]
       +    cmd.extend(args)
       +    data = RunShell(cmd)
       +    count = 0
       +    for line in data.splitlines():
       +      if line.startswith("Index:") or line.startswith("Property changes on:"):
       +        count += 1
       +        logging.info(line)
       +    if not count:
       +      ErrorExit("No valid patches found in output from svn diff")
       +    return data
       +
       +  def _CollapseKeywords(self, content, keyword_str):
       +    """Collapses SVN keywords."""
       +    # svn cat translates keywords but svn diff doesn't. As a result of this
       +    # behavior patching.PatchChunks() fails with a chunk mismatch error.
       +    # This part was originally written by the Review Board development team
       +    # who had the same problem (http://reviews.review-board.org/r/276/).
       +    # Mapping of keywords to known aliases
       +    svn_keywords = {
       +      # Standard keywords
       +      'Date':                ['Date', 'LastChangedDate'],
       +      'Revision':            ['Revision', 'LastChangedRevision', 'Rev'],
       +      'Author':              ['Author', 'LastChangedBy'],
       +      'HeadURL':             ['HeadURL', 'URL'],
       +      'Id':                  ['Id'],
       +
       +      # Aliases
       +      'LastChangedDate':     ['LastChangedDate', 'Date'],
       +      'LastChangedRevision': ['LastChangedRevision', 'Rev', 'Revision'],
       +      'LastChangedBy':       ['LastChangedBy', 'Author'],
       +      'URL':                 ['URL', 'HeadURL'],
       +    }
       +
       +    def repl(m):
       +       if m.group(2):
       +         return "$%s::%s$" % (m.group(1), " " * len(m.group(3)))
       +       return "$%s$" % m.group(1)
       +    keywords = [keyword
       +                for name in keyword_str.split(" ")
       +                for keyword in svn_keywords.get(name, [])]
       +    return re.sub(r"\$(%s):(:?)([^\$]+)\$" % '|'.join(keywords), repl, content)
       +
       +  def GetUnknownFiles(self):
       +    status = RunShell(["svn", "status", "--ignore-externals"], silent_ok=True)
       +    unknown_files = []
       +    for line in status.split("\n"):
       +      if line and line[0] == "?":
       +        unknown_files.append(line)
       +    return unknown_files
       +
       +  def ReadFile(self, filename):
       +    """Returns the contents of a file."""
       +    file = open(filename, 'rb')
       +    result = ""
       +    try:
       +      result = file.read()
       +    finally:
       +      file.close()
       +    return result
       +
       +  def GetStatus(self, filename):
       +    """Returns the status of a file."""
       +    if not self.options.revision:
       +      status = RunShell(["svn", "status", "--ignore-externals", filename])
       +      if not status:
       +        ErrorExit("svn status returned no output for %s" % filename)
       +      status_lines = status.splitlines()
       +      # If file is in a cl, the output will begin with
       +      # "\n--- Changelist 'cl_name':\n".  See
       +      # http://svn.collab.net/repos/svn/trunk/notes/changelist-design.txt
       +      if (len(status_lines) == 3 and
       +          not status_lines[0] and
       +          status_lines[1].startswith("--- Changelist")):
       +        status = status_lines[2]
       +      else:
       +        status = status_lines[0]
       +    # If we have a revision to diff against we need to run "svn list"
       +    # for the old and the new revision and compare the results to get
       +    # the correct status for a file.
       +    else:
       +      dirname, relfilename = os.path.split(filename)
       +      if dirname not in self.svnls_cache:
       +        cmd = ["svn", "list", "-r", self.rev_start, dirname or "."]
       +        out, returncode = RunShellWithReturnCode(cmd)
       +        if returncode:
       +          ErrorExit("Failed to get status for %s." % filename)
       +        old_files = out.splitlines()
       +        args = ["svn", "list"]
       +        if self.rev_end:
       +          args += ["-r", self.rev_end]
       +        cmd = args + [dirname or "."]
       +        out, returncode = RunShellWithReturnCode(cmd)
       +        if returncode:
       +          ErrorExit("Failed to run command %s" % cmd)
       +        self.svnls_cache[dirname] = (old_files, out.splitlines())
       +      old_files, new_files = self.svnls_cache[dirname]
       +      if relfilename in old_files and relfilename not in new_files:
       +        status = "D   "
       +      elif relfilename in old_files and relfilename in new_files:
       +        status = "M   "
       +      else:
       +        status = "A   "
       +    return status
       +
       +  def GetBaseFile(self, filename):
       +    status = self.GetStatus(filename)
       +    base_content = None
       +    new_content = None
       +
       +    # If a file is copied its status will be "A  +", which signifies
       +    # "addition-with-history".  See "svn st" for more information.  We need to
       +    # upload the original file or else diff parsing will fail if the file was
       +    # edited.
       +    if status[0] == "A" and status[3] != "+":
       +      # We'll need to upload the new content if we're adding a binary file
       +      # since diff's output won't contain it.
       +      mimetype = RunShell(["svn", "propget", "svn:mime-type", filename],
       +                          silent_ok=True)
       +      base_content = ""
       +      is_binary = bool(mimetype) and not mimetype.startswith("text/")
       +      if is_binary and self.IsImage(filename):
       +        new_content = self.ReadFile(filename)
       +    elif (status[0] in ("M", "D", "R") or
       +          (status[0] == "A" and status[3] == "+") or  # Copied file.
       +          (status[0] == " " and status[1] == "M")):  # Property change.
       +      args = []
       +      if self.options.revision:
       +        url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
       +      else:
       +        # Don't change filename, it's needed later.
       +        url = filename
       +        args += ["-r", "BASE"]
       +      cmd = ["svn"] + args + ["propget", "svn:mime-type", url]
       +      mimetype, returncode = RunShellWithReturnCode(cmd)
       +      if returncode:
       +        # File does not exist in the requested revision.
       +        # Reset mimetype, it contains an error message.
       +        mimetype = ""
       +      get_base = False
       +      is_binary = bool(mimetype) and not mimetype.startswith("text/")
       +      if status[0] == " ":
       +        # Empty base content just to force an upload.
       +        base_content = ""
       +      elif is_binary:
       +        if self.IsImage(filename):
       +          get_base = True
       +          if status[0] == "M":
       +            if not self.rev_end:
       +              new_content = self.ReadFile(filename)
       +            else:
       +              url = "%s/%s@%s" % (self.svn_base, filename, self.rev_end)
       +              new_content = RunShell(["svn", "cat", url],
       +                                     universal_newlines=True, silent_ok=True)
       +        else:
       +          base_content = ""
       +      else:
       +        get_base = True
       +
       +      if get_base:
       +        if is_binary:
       +          universal_newlines = False
       +        else:
       +          universal_newlines = True
       +        if self.rev_start:
       +          # "svn cat -r REV delete_file.txt" doesn't work. cat requires
       +          # the full URL with "@REV" appended instead of using "-r" option.
       +          url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
       +          base_content = RunShell(["svn", "cat", url],
       +                                  universal_newlines=universal_newlines,
       +                                  silent_ok=True)
       +        else:
       +          base_content = RunShell(["svn", "cat", filename],
       +                                  universal_newlines=universal_newlines,
       +                                  silent_ok=True)
       +        if not is_binary:
       +          args = []
       +          if self.rev_start:
       +            url = "%s/%s@%s" % (self.svn_base, filename, self.rev_start)
       +          else:
       +            url = filename
       +            args += ["-r", "BASE"]
       +          cmd = ["svn"] + args + ["propget", "svn:keywords", url]
       +          keywords, returncode = RunShellWithReturnCode(cmd)
       +          if keywords and not returncode:
       +            base_content = self._CollapseKeywords(base_content, keywords)
       +    else:
       +      StatusUpdate("svn status returned unexpected output: %s" % status)
       +      sys.exit(1)
       +    return base_content, new_content, is_binary, status[0:5]
       +
       +
       +class GitVCS(VersionControlSystem):
       +  """Implementation of the VersionControlSystem interface for Git."""
       +
       +  def __init__(self, options):
       +    super(GitVCS, self).__init__(options)
       +    # Map of filename -> (hash before, hash after) of base file.
       +    # Hashes for "no such file" are represented as None.
       +    self.hashes = {}
       +    # Map of new filename -> old filename for renames.
       +    self.renames = {}
       +
       +  def GenerateDiff(self, extra_args):
       +    # This is more complicated than svn's GenerateDiff because we must convert
       +    # the diff output to include an svn-style "Index:" line as well as record
       +    # the hashes of the files, so we can upload them along with our diff.
       +
       +    # Special used by git to indicate "no such content".
       +    NULL_HASH = "0"*40
       +
       +    extra_args = extra_args[:]
       +    if self.options.revision:
       +      extra_args = [self.options.revision] + extra_args
       +    extra_args.append('-M')
       +
       +    # --no-ext-diff is broken in some versions of Git, so try to work around
       +    # this by overriding the environment (but there is still a problem if the
       +    # git config key "diff.external" is used).
       +    env = os.environ.copy()
       +    if 'GIT_EXTERNAL_DIFF' in env: del env['GIT_EXTERNAL_DIFF']
       +    gitdiff = RunShell(["git", "diff", "--no-ext-diff", "--full-index"]
       +                       + extra_args, env=env)
       +    svndiff = []
       +    filecount = 0
       +    filename = None
       +    for line in gitdiff.splitlines():
       +      match = re.match(r"diff --git a/(.*) b/(.*)$", line)
       +      if match:
       +        filecount += 1
       +        # Intentionally use the "after" filename so we can show renames.
       +        filename = match.group(2)
       +        svndiff.append("Index: %s\n" % filename)
       +        if match.group(1) != match.group(2):
       +          self.renames[match.group(2)] = match.group(1)
       +      else:
       +        # The "index" line in a git diff looks like this (long hashes elided):
       +        #   index 82c0d44..b2cee3f 100755
       +        # We want to save the left hash, as that identifies the base file.
       +        match = re.match(r"index (\w+)\.\.(\w+)", line)
       +        if match:
       +          before, after = (match.group(1), match.group(2))
       +          if before == NULL_HASH:
       +            before = None
       +          if after == NULL_HASH:
       +            after = None
       +          self.hashes[filename] = (before, after)
       +      svndiff.append(line + "\n")
       +    if not filecount:
       +      ErrorExit("No valid patches found in output from git diff")
       +    return "".join(svndiff)
       +
       +  def GetUnknownFiles(self):
       +    status = RunShell(["git", "ls-files", "--exclude-standard", "--others"],
       +                      silent_ok=True)
       +    return status.splitlines()
       +
       +  def GetFileContent(self, file_hash, is_binary):
       +    """Returns the content of a file identified by its git hash."""
       +    data, retcode = RunShellWithReturnCode(["git", "show", file_hash],
       +                                            universal_newlines=not is_binary)
       +    if retcode:
       +      ErrorExit("Got error status from 'git show %s'" % file_hash)
       +    return data
       +
       +  def GetBaseFile(self, filename):
       +    hash_before, hash_after = self.hashes.get(filename, (None,None))
       +    base_content = None
       +    new_content = None
       +    is_binary = self.IsBinary(filename)
       +    status = None
       +
       +    if filename in self.renames:
       +      status = "A +"  # Match svn attribute name for renames.
       +      if filename not in self.hashes:
       +        # If a rename doesn't change the content, we never get a hash.
       +        base_content = RunShell(["git", "show", filename])
       +    elif not hash_before:
       +      status = "A"
       +      base_content = ""
       +    elif not hash_after:
       +      status = "D"
       +    else:
       +      status = "M"
       +
       +    is_image = self.IsImage(filename)
       +
       +    # Grab the before/after content if we need it.
       +    # We should include file contents if it's text or it's an image.
       +    if not is_binary or is_image:
       +      # Grab the base content if we don't have it already.
       +      if base_content is None and hash_before:
       +        base_content = self.GetFileContent(hash_before, is_binary)
       +      # Only include the "after" file if it's an image; otherwise it
       +      # it is reconstructed from the diff.
       +      if is_image and hash_after:
       +        new_content = self.GetFileContent(hash_after, is_binary)
       +
       +    return (base_content, new_content, is_binary, status)
       +
       +
       +class MercurialVCS(VersionControlSystem):
       +  """Implementation of the VersionControlSystem interface for Mercurial."""
       +
       +  def __init__(self, options, repo_dir):
       +    super(MercurialVCS, self).__init__(options)
       +    # Absolute path to repository (we can be in a subdir)
       +    self.repo_dir = os.path.normpath(repo_dir)
       +    # Compute the subdir
       +    cwd = os.path.normpath(os.getcwd())
       +    assert cwd.startswith(self.repo_dir)
       +    self.subdir = cwd[len(self.repo_dir):].lstrip(r"\/")
       +    if self.options.revision:
       +      self.base_rev = self.options.revision
       +    else:
       +      self.base_rev = RunShell(["hg", "parent", "-q"]).split(':')[1].strip()
       +
       +  def _GetRelPath(self, filename):
       +    """Get relative path of a file according to the current directory,
       +    given its logical path in the repo."""
       +    assert filename.startswith(self.subdir), (filename, self.subdir)
       +    return filename[len(self.subdir):].lstrip(r"\/")
       +
       +  def GenerateDiff(self, extra_args):
       +    # If no file specified, restrict to the current subdir
       +    extra_args = extra_args or ["."]
       +    cmd = ["hg", "diff", "--git", "-r", self.base_rev] + extra_args
       +    data = RunShell(cmd, silent_ok=True)
       +    svndiff = []
       +    filecount = 0
       +    for line in data.splitlines():
       +      m = re.match("diff --git a/(\S+) b/(\S+)", line)
       +      if m:
       +        # Modify line to make it look like as it comes from svn diff.
       +        # With this modification no changes on the server side are required
       +        # to make upload.py work with Mercurial repos.
       +        # NOTE: for proper handling of moved/copied files, we have to use
       +        # the second filename.
       +        filename = m.group(2)
       +        svndiff.append("Index: %s" % filename)
       +        svndiff.append("=" * 67)
       +        filecount += 1
       +        logging.info(line)
       +      else:
       +        svndiff.append(line)
       +    if not filecount:
       +      ErrorExit("No valid patches found in output from hg diff")
       +    return "\n".join(svndiff) + "\n"
       +
       +  def GetUnknownFiles(self):
       +    """Return a list of files unknown to the VCS."""
       +    args = []
       +    status = RunShell(["hg", "status", "--rev", self.base_rev, "-u", "."],
       +        silent_ok=True)
       +    unknown_files = []
       +    for line in status.splitlines():
       +      st, fn = line.split(" ", 1)
       +      if st == "?":
       +        unknown_files.append(fn)
       +    return unknown_files
       +
       +  def GetBaseFile(self, filename):
       +    # "hg status" and "hg cat" both take a path relative to the current subdir
       +    # rather than to the repo root, but "hg diff" has given us the full path
       +    # to the repo root.
       +    base_content = ""
       +    new_content = None
       +    is_binary = False
       +    oldrelpath = relpath = self._GetRelPath(filename)
       +    # "hg status -C" returns two lines for moved/copied files, one otherwise
       +    out = RunShell(["hg", "status", "-C", "--rev", self.base_rev, relpath])
       +    out = out.splitlines()
       +    # HACK: strip error message about missing file/directory if it isn't in
       +    # the working copy
       +    if out[0].startswith('%s: ' % relpath):
       +      out = out[1:]
       +    if len(out) > 1:
       +      # Moved/copied => considered as modified, use old filename to
       +      # retrieve base contents
       +      oldrelpath = out[1].strip()
       +      status = "M"
       +    else:
       +      status, _ = out[0].split(' ', 1)
       +    if ":" in self.base_rev:
       +      base_rev = self.base_rev.split(":", 1)[0]
       +    else:
       +      base_rev = self.base_rev
       +    if status != "A":
       +      base_content = RunShell(["hg", "cat", "-r", base_rev, oldrelpath],
       +        silent_ok=True)
       +      is_binary = "\0" in base_content  # Mercurial's heuristic
       +    if status != "R":
       +      new_content = open(relpath, "rb").read()
       +      is_binary = is_binary or "\0" in new_content
       +    if is_binary and base_content:
       +      # Fetch again without converting newlines
       +      base_content = RunShell(["hg", "cat", "-r", base_rev, oldrelpath],
       +        silent_ok=True, universal_newlines=False)
       +    if not is_binary or not self.IsImage(relpath):
       +      new_content = None
       +    return base_content, new_content, is_binary, status
       +
       +
       +# NOTE: The SplitPatch function is duplicated in engine.py, keep them in sync.
       +def SplitPatch(data):
       +  """Splits a patch into separate pieces for each file.
       +
       +  Args:
       +    data: A string containing the output of svn diff.
       +
       +  Returns:
       +    A list of 2-tuple (filename, text) where text is the svn diff output
       +      pertaining to filename.
       +  """
       +  patches = []
       +  filename = None
       +  diff = []
       +  for line in data.splitlines(True):
       +    new_filename = None
       +    if line.startswith('Index:'):
       +      unused, new_filename = line.split(':', 1)
       +      new_filename = new_filename.strip()
       +    elif line.startswith('Property changes on:'):
       +      unused, temp_filename = line.split(':', 1)
       +      # When a file is modified, paths use '/' between directories, however
       +      # when a property is modified '\' is used on Windows.  Make them the same
       +      # otherwise the file shows up twice.
       +      temp_filename = temp_filename.strip().replace('\\', '/')
       +      if temp_filename != filename:
       +        # File has property changes but no modifications, create a new diff.
       +        new_filename = temp_filename
       +    if new_filename:
       +      if filename and diff:
       +        patches.append((filename, ''.join(diff)))
       +      filename = new_filename
       +      diff = [line]
       +      continue
       +    if diff is not None:
       +      diff.append(line)
       +  if filename and diff:
       +    patches.append((filename, ''.join(diff)))
       +  return patches
       +
       +
       +def UploadSeparatePatches(issue, rpc_server, patchset, data, options):
       +  """Uploads a separate patch for each file in the diff output.
       +
       +  Returns a list of [patch_key, filename] for each file.
       +  """
       +  patches = SplitPatch(data)
       +  rv = []
       +  for patch in patches:
       +    if len(patch[1]) > MAX_UPLOAD_SIZE:
       +      print ("Not uploading the patch for " + patch[0] +
       +             " because the file is too large.")
       +      continue
       +    form_fields = [("filename", patch[0])]
       +    if not options.download_base:
       +      form_fields.append(("content_upload", "1"))
       +    files = [("data", "data.diff", patch[1])]
       +    ctype, body = EncodeMultipartFormData(form_fields, files)
       +    url = "/%d/upload_patch/%d" % (int(issue), int(patchset))
       +    print "Uploading patch for " + patch[0]
       +    response_body = rpc_server.Send(url, body, content_type=ctype)
       +    lines = response_body.splitlines()
       +    if not lines or lines[0] != "OK":
       +      StatusUpdate("  --> %s" % response_body)
       +      sys.exit(1)
       +    rv.append([lines[1], patch[0]])
       +  return rv
       +
       +
       +def GuessVCSName():
       +  """Helper to guess the version control system.
       +
       +  This examines the current directory, guesses which VersionControlSystem
       +  we're using, and returns an string indicating which VCS is detected.
       +
       +  Returns:
       +    A pair (vcs, output).  vcs is a string indicating which VCS was detected
       +    and is one of VCS_GIT, VCS_MERCURIAL, VCS_SUBVERSION, or VCS_UNKNOWN.
       +    output is a string containing any interesting output from the vcs
       +    detection routine, or None if there is nothing interesting.
       +  """
       +  # Mercurial has a command to get the base directory of a repository
       +  # Try running it, but don't die if we don't have hg installed.
       +  # NOTE: we try Mercurial first as it can sit on top of an SVN working copy.
       +  try:
       +    out, returncode = RunShellWithReturnCode(["hg", "root"])
       +    if returncode == 0:
       +      return (VCS_MERCURIAL, out.strip())
       +  except OSError, (errno, message):
       +    if errno != 2:  # ENOENT -- they don't have hg installed.
       +      raise
       +
       +  # Subversion has a .svn in all working directories.
       +  if os.path.isdir('.svn'):
       +    logging.info("Guessed VCS = Subversion")
       +    return (VCS_SUBVERSION, None)
       +
       +  # Git has a command to test if you're in a git tree.
       +  # Try running it, but don't die if we don't have git installed.
       +  try:
       +    out, returncode = RunShellWithReturnCode(["git", "rev-parse",
       +                                              "--is-inside-work-tree"])
       +    if returncode == 0:
       +      return (VCS_GIT, None)
       +  except OSError, (errno, message):
       +    if errno != 2:  # ENOENT -- they don't have git installed.
       +      raise
       +
       +  return (VCS_UNKNOWN, None)
       +
       +
       +def GuessVCS(options):
       +  """Helper to guess the version control system.
       +
       +  This verifies any user-specified VersionControlSystem (by command line
       +  or environment variable).  If the user didn't specify one, this examines
       +  the current directory, guesses which VersionControlSystem we're using,
       +  and returns an instance of the appropriate class.  Exit with an error
       +  if we can't figure it out.
       +
       +  Returns:
       +    A VersionControlSystem instance. Exits if the VCS can't be guessed.
       +  """
       +  vcs = options.vcs
       +  if not vcs:
       +    vcs = os.environ.get("CODEREVIEW_VCS")
       +  if vcs:
       +    v = VCS_ABBREVIATIONS.get(vcs.lower())
       +    if v is None:
       +      ErrorExit("Unknown version control system %r specified." % vcs)
       +    (vcs, extra_output) = (v, None)
       +  else:
       +    (vcs, extra_output) = GuessVCSName()
       +
       +  if vcs == VCS_MERCURIAL:
       +    if extra_output is None:
       +      extra_output = RunShell(["hg", "root"]).strip()
       +    return MercurialVCS(options, extra_output)
       +  elif vcs == VCS_SUBVERSION:
       +    return SubversionVCS(options)
       +  elif vcs == VCS_GIT:
       +    return GitVCS(options)
       +
       +  ErrorExit(("Could not guess version control system. "
       +             "Are you in a working copy directory?"))
       +
       +
       +def RealMain(argv, data=None):
       +  """The real main function.
       +
       +  Args:
       +    argv: Command line arguments.
       +    data: Diff contents. If None (default) the diff is generated by
       +      the VersionControlSystem implementation returned by GuessVCS().
       +
       +  Returns:
       +    A 2-tuple (issue id, patchset id).
       +    The patchset id is None if the base files are not uploaded by this
       +    script (applies only to SVN checkouts).
       +  """
       +  logging.basicConfig(format=("%(asctime).19s %(levelname)s %(filename)s:"
       +                              "%(lineno)s %(message)s "))
       +  os.environ['LC_ALL'] = 'C'
       +  options, args = parser.parse_args(argv[1:])
       +  global verbosity
       +  verbosity = options.verbose
       +  if verbosity >= 3:
       +    logging.getLogger().setLevel(logging.DEBUG)
       +  elif verbosity >= 2:
       +    logging.getLogger().setLevel(logging.INFO)
       +  vcs = GuessVCS(options)
       +  if isinstance(vcs, SubversionVCS):
       +    # base field is only allowed for Subversion.
       +    # Note: Fetching base files may become deprecated in future releases.
       +    base = vcs.GuessBase(options.download_base)
       +  else:
       +    base = None
       +  if not base and options.download_base:
       +    options.download_base = True
       +    logging.info("Enabled upload of base file")
       +  if not options.assume_yes:
       +    vcs.CheckForUnknownFiles()
       +  if data is None:
       +    data = vcs.GenerateDiff(args)
       +  files = vcs.GetBaseFiles(data)
       +  if verbosity >= 1:
       +    print "Upload server:", options.server, "(change with -s/--server)"
       +  if options.issue:
       +    prompt = "Message describing this patch set: "
       +  else:
       +    prompt = "New issue subject: "
       +  message = options.message or raw_input(prompt).strip()
       +  if not message:
       +    ErrorExit("A non-empty message is required")
       +  rpc_server = GetRpcServer(options)
       +  form_fields = [("subject", message)]
       +  if base:
       +    form_fields.append(("base", base))
       +  if options.issue:
       +    form_fields.append(("issue", str(options.issue)))
       +  if options.email:
       +    form_fields.append(("user", options.email))
       +  if options.reviewers:
       +    for reviewer in options.reviewers.split(','):
       +      if "@" in reviewer and not reviewer.split("@")[1].count(".") == 1:
       +        ErrorExit("Invalid email address: %s" % reviewer)
       +    form_fields.append(("reviewers", options.reviewers))
       +  if options.cc:
       +    for cc in options.cc.split(','):
       +      if "@" in cc and not cc.split("@")[1].count(".") == 1:
       +        ErrorExit("Invalid email address: %s" % cc)
       +    form_fields.append(("cc", options.cc))
       +  description = options.description
       +  if options.description_file:
       +    if options.description:
       +      ErrorExit("Can't specify description and description_file")
       +    file = open(options.description_file, 'r')
       +    description = file.read()
       +    file.close()
       +  if description:
       +    form_fields.append(("description", description))
       +  # Send a hash of all the base file so the server can determine if a copy
       +  # already exists in an earlier patchset.
       +  base_hashes = ""
       +  for file, info in files.iteritems():
       +    if not info[0] is None:
       +      checksum = md5(info[0]).hexdigest()
       +      if base_hashes:
       +        base_hashes += "|"
       +      base_hashes += checksum + ":" + file
       +  form_fields.append(("base_hashes", base_hashes))
       +  if options.private:
       +    if options.issue:
       +      print "Warning: Private flag ignored when updating an existing issue."
       +    else:
       +      form_fields.append(("private", "1"))
       +  # If we're uploading base files, don't send the email before the uploads, so
       +  # that it contains the file status.
       +  if options.send_mail and options.download_base:
       +    form_fields.append(("send_mail", "1"))
       +  if not options.download_base:
       +    form_fields.append(("content_upload", "1"))
       +  if len(data) > MAX_UPLOAD_SIZE:
       +    print "Patch is large, so uploading file patches separately."
       +    uploaded_diff_file = []
       +    form_fields.append(("separate_patches", "1"))
       +  else:
       +    uploaded_diff_file = [("data", "data.diff", data)]
       +  ctype, body = EncodeMultipartFormData(form_fields, uploaded_diff_file)
       +  response_body = rpc_server.Send("/upload", body, content_type=ctype)
       +  patchset = None
       +  if not options.download_base or not uploaded_diff_file:
       +    lines = response_body.splitlines()
       +    if len(lines) >= 2:
       +      msg = lines[0]
       +      patchset = lines[1].strip()
       +      patches = [x.split(" ", 1) for x in lines[2:]]
       +    else:
       +      msg = response_body
       +  else:
       +    msg = response_body
       +  if not response_body.startswith("Issue created.") and \
       +  not response_body.startswith("Issue updated."):
       +    print >>sys.stderr, msg
       +    sys.exit(0)
       +  issue = msg[msg.rfind("/")+1:]
       +
       +  if not uploaded_diff_file:
       +    result = UploadSeparatePatches(issue, rpc_server, patchset, data, options)
       +    if not options.download_base:
       +      patches = result
       +
       +  if not options.download_base:
       +    vcs.UploadBaseFiles(issue, rpc_server, patches, patchset, options, files)
       +    if options.send_mail:
       +      rpc_server.Send("/" + issue + "/mail", payload="")
       +  return issue, patchset
       +
       +
       +def main():
       +  try:
       +    RealMain(sys.argv)
       +  except KeyboardInterrupt:
       +    print
       +    StatusUpdate("Interrupted.")
       +    sys.exit(1)
       +