patchbomb: move exportee class to top level

As suggested by djc.

hgext/patchbomb.py

@@ -1,474 +1,473 b''
 '''sending Mercurial changesets as a series of patch emails
 
 The series is started off with a "[PATCH 0 of N]" introduction,
 which describes the series as a whole.
 
 Each patch email has a Subject line of "[PATCH M of N] ...", using
 the first line of the changeset description as the subject text.
 The message contains two or three body parts:
 
   The remainder of the changeset description.
 
   [Optional] If the diffstat program is installed, the result of
   running diffstat on the patch.
 
   The patch itself, as generated by "hg export".
 
 Each message refers to all of its predecessors using the In-Reply-To
 and References headers, so they will show up as a sequence in
 threaded mail and news readers, and in mail archives.
 
 For each changeset, you will be prompted with a diffstat summary and
 the changeset summary, so you can be sure you are sending the right changes.
 
 To enable this extension:
 
   [extensions]
   hgext.patchbomb =
 
 To configure other defaults, add a section like this to your hgrc file:
 
   [email]
   from = My Name <my@email>
   to = recipient1, recipient2, ...
   cc = cc1, cc2, ...
   bcc = bcc1, bcc2, ...
 
 Then you can use the "hg email" command to mail a series of changesets
 as a patchbomb.
 
 To avoid sending patches prematurely, it is a good idea to first run
 the "email" command with the "-n" option (test only).  You will be
 prompted for an email recipient address, a subject an an introductory
 message describing the patches of your patchbomb.  Then when all is
 done, patchbomb messages are displayed. If PAGER environment variable
 is set, your pager will be fired up once for each patchbomb message, so
 you can verify everything is alright.
 
 The "-m" (mbox) option is also very useful.  Instead of previewing
 each patchbomb message in a pager or sending the messages directly,
 it will create a UNIX mailbox file with the patch emails.  This
 mailbox file can be previewed with any mail user agent which supports
 UNIX mbox files, i.e. with mutt:
 
   % mutt -R -f mbox
 
 When you are previewing the patchbomb messages, you can use `formail'
 (a utility that is commonly installed as part of the procmail package),
 to send each message out:
 
   % formail -s sendmail -bm -t < mbox
 
 That should be all. Now your patchbomb is on its way out.'''
 
 import os, errno, socket, tempfile, cStringIO
 import email.MIMEMultipart, email.MIMEBase
 import email.Utils, email.Encoders, email.Generator
 from mercurial import cmdutil, commands, hg, mail, patch, util
 from mercurial.i18n import _
 from mercurial.node import bin
 
+class exportee:
+    def __init__(self, container):
+        self.lines = []
+        self.container = container
+        self.name = 'email'
+
+    def write(self, data):
+        self.lines.append(data)
+
+    def close(self):
+        self.container.append(''.join(self.lines).split('\n'))
+        self.lines = []
+
 def patchbomb(ui, repo, *revs, **opts):
     '''send changesets by email
 
     By default, diffs are sent in the format generated by hg export,
     one per message.  The series starts with a "[PATCH 0 of N]"
     introduction, which describes the series as a whole.
 
     Each patch email has a Subject line of "[PATCH M of N] ...", using
     the first line of the changeset description as the subject text.
     The message contains two or three body parts.  First, the rest of
     the changeset description.  Next, (optionally) if the diffstat
     program is installed, the result of running diffstat on the patch.
     Finally, the patch itself, as generated by "hg export".
 
     With --outgoing, emails will be generated for patches not
     found in the destination repository (or only those which are
     ancestors of the specified revisions if any are provided)
 
     With --bundle, changesets are selected as for --outgoing,
     but a single email containing a binary Mercurial bundle as an
     attachment will be sent.
 
     Examples:
 
     hg email -r 3000          # send patch 3000 only
     hg email -r 3000 -r 3001  # send patches 3000 and 3001
     hg email -r 3000:3005     # send patches 3000 through 3005
     hg email 3000             # send patch 3000 (deprecated)
 
     hg email -o               # send all patches not in default
     hg email -o DEST          # send all patches not in DEST
     hg email -o -r 3000       # send all ancestors of 3000 not in default
     hg email -o -r 3000 DEST  # send all ancestors of 3000 not in DEST
 
     hg email -b               # send bundle of all patches not in default
     hg email -b DEST          # send bundle of all patches not in DEST
     hg email -b -r 3000       # bundle of all ancestors of 3000 not in default
     hg email -b -r 3000 DEST  # bundle of all ancestors of 3000 not in DEST
 
     Before using this command, you will need to enable email in your hgrc.
     See the [email] section in hgrc(5) for details.
     '''
 
     _charsets = mail._charsets(ui)
 
     def prompt(prompt, default = None, rest = ': ', empty_ok = False):
         if not ui.interactive:
             return default
         if default:
             prompt += ' [%s]' % default
         prompt += rest
         while True:
             r = ui.prompt(prompt, default=default)
             if r:
                 return r
             if default is not None:
                 return default
             if empty_ok:
                 return r
             ui.warn(_('Please enter a valid value.\n'))
 
     def confirm(s, denial):
         if not prompt(s, default = 'y', rest = '? ').lower().startswith('y'):
             raise util.Abort(denial)
 
     def cdiffstat(summary, patchlines):
         s = patch.diffstat(patchlines)
         if s:
             if summary:
                 ui.write(summary, '\n')
                 ui.write(s, '\n')
             confirm(_('Does the diffstat above look okay'),
                     _('diffstat rejected'))
         elif s is None:
             ui.warn(_('No diffstat information available.\n'))
             s = ''
         return s
 
     def makepatch(patch, idx, total):
         desc = []
         node = None
         body = ''
         for line in patch:
             if line.startswith('#'):
                 if line.startswith('# Node ID'):
                     node = line.split()[-1]
                 continue
             if line.startswith('diff -r') or line.startswith('diff --git'):
                 break
             desc.append(line)
         if not node:
             raise ValueError
 
         if opts.get('attach'):
              body = ('\n'.join(desc[1:]).strip() or
                    'Patch subject is complete summary.')
              body += '\n\n\n'
 
         if opts.get('plain'):
             while patch and patch[0].startswith('# '):
                 patch.pop(0)
             if patch:
                 patch.pop(0)
             while patch and not patch[0].strip():
                 patch.pop(0)
         if opts.get('diffstat'):
             body += cdiffstat('\n'.join(desc), patch) + '\n\n'
         if opts.get('attach') or opts.get('inline'):
             msg = email.MIMEMultipart.MIMEMultipart()
             if body:
                 msg.attach(mail.mimeencode(ui, body, _charsets,
                                            opts.get('test')))
             p = mail.mimetextpatch('\n'.join(patch), 'x-patch',
                                    opts.get('test'))
             binnode = bin(node)
             # if node is mq patch, it will have patch file name as tag
             patchname = [t for t in repo.nodetags(binnode)
                          if t.endswith('.patch') or t.endswith('.diff')]
             if patchname:
                 patchname = patchname[0]
             elif total > 1:
                 patchname = cmdutil.make_filename(repo, '%b-%n.patch',
                                                   binnode, idx, total)
             else:
                 patchname = cmdutil.make_filename(repo, '%b.patch', binnode)
             disposition = 'inline'
             if opts.get('attach'):
                 disposition = 'attachment'
             p['Content-Disposition'] = disposition + '; filename=' + patchname
             msg.attach(p)
         else:
             body += '\n'.join(patch)
             msg = mail.mimetextpatch(body, display=opts.get('test'))
 
         subj = desc[0].strip().rstrip('. ')
         if total == 1:
             subj = '[PATCH] ' + (opts.get('subject') or subj)
         else:
             tlen = len(str(total))
             subj = '[PATCH %0*d of %d] %s' % (tlen, idx, total, subj)
         msg['Subject'] = mail.headencode(ui, subj, _charsets, opts.get('test'))
         msg['X-Mercurial-Node'] = node
         return msg, subj
 
     def outgoing(dest, revs):
         '''Return the revisions present locally but not in dest'''
         dest = ui.expandpath(dest or 'default-push', dest or 'default')
         revs = [repo.lookup(rev) for rev in revs]
         other = hg.repository(ui, dest)
         ui.status(_('comparing with %s\n') % dest)
         o = repo.findoutgoing(other)
         if not o:
             ui.status(_("no changes found\n"))
             return []
         o = repo.changelog.nodesbetween(o, revs or None)[0]
         return [str(repo.changelog.rev(r)) for r in o]
 
     def getbundle(dest):
         tmpdir = tempfile.mkdtemp(prefix='hg-email-bundle-')
         tmpfn = os.path.join(tmpdir, 'bundle')
         try:
             commands.bundle(ui, repo, tmpfn, dest, **opts)
             return open(tmpfn, 'rb').read()
         finally:
             try:
                 os.unlink(tmpfn)
             except:
                 pass
             os.rmdir(tmpdir)
 
     if not (opts.get('test') or opts.get('mbox')):
         # really sending
         mail.validateconfig(ui)
 
     if not (revs or opts.get('rev')
             or opts.get('outgoing') or opts.get('bundle')):
         raise util.Abort(_('specify at least one changeset with -r or -o'))
 
     cmdutil.setremoteconfig(ui, opts)
     if opts.get('outgoing') and opts.get('bundle'):
         raise util.Abort(_("--outgoing mode always on with --bundle;"
                            " do not re-specify --outgoing"))
 
     if opts.get('outgoing') or opts.get('bundle'):
         if len(revs) > 1:
             raise util.Abort(_("too many destinations"))
         dest = revs and revs[0] or None
         revs = []
 
     if opts.get('rev'):
         if revs:
             raise util.Abort(_('use only one form to specify the revision'))
         revs = opts.get('rev')
 
     if opts.get('outgoing'):
         revs = outgoing(dest, opts.get('rev'))
     if opts.get('bundle'):
         opts['revs'] = revs
 
     # start
     if opts.get('date'):
         start_time = util.parsedate(opts.get('date'))
     else:
         start_time = util.makedate()
 
     def genmsgid(id):
         return '<%s.%s@%s>' % (id[:20], int(start_time[0]), socket.getfqdn())
 
     def getdescription(body, sender):
         if opts.get('desc'):
             body = open(opts.get('desc')).read()
         else:
             ui.write(_('\nWrite the introductory message for the '
                        'patch series.\n\n'))
             body = ui.edit(body, sender)
         return body
 
     def getexportmsgs():
         patches = []
-
-        class exportee:
-            def __init__(self, container):
-                self.lines = []
-                self.container = container
-                self.name = 'email'
-
-            def write(self, data):
-                self.lines.append(data)
-
-            def close(self):
-                self.container.append(''.join(self.lines).split('\n'))
-                self.lines = []
-
         commands.export(ui, repo, *revs, **{'output': exportee(patches),
                                             'switch_parent': False,
                                             'text': None,
                                             'git': opts.get('git')})
 
         jumbo = []
         msgs = []
 
         ui.write(_('This patch series consists of %d patches.\n\n')
                  % len(patches))
 
         for p, i in zip(patches, xrange(len(patches))):
             jumbo.extend(p)
             msgs.append(makepatch(p, i + 1, len(patches)))
 
         if len(patches) > 1:
             tlen = len(str(len(patches)))
 
             subj = '[PATCH %0*d of %d] %s' % (
                 tlen, 0, len(patches),
                 opts.get('subject') or
                 prompt('Subject:',
                        rest=' [PATCH %0*d of %d] ' % (tlen, 0, len(patches))))
 
             body = ''
             if opts.get('diffstat'):
                 d = cdiffstat(_('Final summary:\n'), jumbo)
                 if d:
                     body = '\n' + d
 
             body = getdescription(body, sender)
             msg = mail.mimeencode(ui, body, _charsets, opts.get('test'))
             msg['Subject'] = mail.headencode(ui, subj, _charsets,
                                              opts.get('test'))
 
             msgs.insert(0, (msg, subj))
         return msgs
 
     def getbundlemsgs(bundle):
         subj = (opts.get('subject')
                 or prompt('Subject:', default='A bundle for your repository'))
 
         body = getdescription('', sender)
         msg = email.MIMEMultipart.MIMEMultipart()
         if body:
             msg.attach(mail.mimeencode(ui, body, _charsets, opts.get('test')))
         datapart = email.MIMEBase.MIMEBase('application', 'x-mercurial-bundle')
         datapart.set_payload(bundle)
         datapart.add_header('Content-Disposition', 'attachment',
                             filename='bundle.hg')
         email.Encoders.encode_base64(datapart)
         msg.attach(datapart)
         msg['Subject'] = mail.headencode(ui, subj, _charsets, opts.get('test'))
         return [(msg, subj)]
 
     sender = (opts.get('from') or ui.config('email', 'from') or
               ui.config('patchbomb', 'from') or
               prompt('From', ui.username()))
 
     if opts.get('bundle'):
         msgs = getbundlemsgs(getbundle(dest))
     else:
         msgs = getexportmsgs()
 
     def getaddrs(opt, prpt, default = None):
         addrs = opts.get(opt) or (ui.config('email', opt) or
                                   ui.config('patchbomb', opt) or
                                   prompt(prpt, default = default)).split(',')
         return [mail.addressencode(ui, a.strip(), _charsets, opts.get('test'))
                 for a in addrs if a.strip()]
 
     to = getaddrs('to', 'To')
     cc = getaddrs('cc', 'Cc', '')
 
     bcc = opts.get('bcc') or (ui.config('email', 'bcc') or
                           ui.config('patchbomb', 'bcc') or '').split(',')
     bcc = [mail.addressencode(ui, a.strip(), _charsets, opts.get('test'))
            for a in bcc if a.strip()]
 
     ui.write('\n')
 
     parent = None
 
     sender_addr = email.Utils.parseaddr(sender)[1]
     sender = mail.addressencode(ui, sender, _charsets, opts.get('test'))
     sendmail = None
     for m, subj in msgs:
         try:
             m['Message-Id'] = genmsgid(m['X-Mercurial-Node'])
         except TypeError:
             m['Message-Id'] = genmsgid('patchbomb')
         if parent:
             m['In-Reply-To'] = parent
         else:
             parent = m['Message-Id']
         m['Date'] = util.datestr(start_time, "%a, %d %b %Y %H:%M:%S %1%2")
 
         start_time = (start_time[0] + 1, start_time[1])
         m['From'] = sender
         m['To'] = ', '.join(to)
         if cc:
             m['Cc']  = ', '.join(cc)
         if bcc:
             m['Bcc'] = ', '.join(bcc)
         if opts.get('test'):
             ui.status(_('Displaying '), subj, ' ...\n')
             ui.flush()
             if 'PAGER' in os.environ:
                 fp = util.popen(os.environ['PAGER'], 'w')
             else:
                 fp = ui
             generator = email.Generator.Generator(fp, mangle_from_=False)
             try:
                 generator.flatten(m, 0)
                 fp.write('\n')
             except IOError, inst:
                 if inst.errno != errno.EPIPE:
                     raise
             if fp is not ui:
                 fp.close()
         elif opts.get('mbox'):
             ui.status(_('Writing '), subj, ' ...\n')
             fp = open(opts.get('mbox'), 'In-Reply-To' in m and 'ab+' or 'wb+')
             generator = email.Generator.Generator(fp, mangle_from_=True)
             date = util.datestr(start_time, '%a %b %d %H:%M:%S %Y')
             fp.write('From %s %s\n' % (sender_addr, date))
             generator.flatten(m, 0)
             fp.write('\n\n')
             fp.close()
         else:
             if not sendmail:
                 sendmail = mail.connect(ui)
             ui.status(_('Sending '), subj, ' ...\n')
             # Exim does not remove the Bcc field
             del m['Bcc']
             fp = cStringIO.StringIO()
             generator = email.Generator.Generator(fp, mangle_from_=False)
             generator.flatten(m, 0)
             sendmail(sender, to + bcc + cc, fp.getvalue())
 
 cmdtable = {
     "email":
         (patchbomb,
          [('a', 'attach', None, _('send patches as attachments')),
           ('i', 'inline', None, _('send patches as inline attachments')),
           ('', 'bcc', [], _('email addresses of blind copy recipients')),
           ('c', 'cc', [], _('email addresses of copy recipients')),
           ('d', 'diffstat', None, _('add diffstat output to messages')),
           ('', 'date', '', _('use the given date as the sending date')),
           ('', 'desc', '', _('use the given file as the series description')),
           ('g', 'git', None, _('use git extended diff format')),
           ('f', 'from', '', _('email address of sender')),
           ('', 'plain', None, _('omit hg patch header')),
           ('n', 'test', None, _('print messages that would be sent')),
           ('m', 'mbox', '',
            _('write messages to mbox file instead of sending them')),
           ('o', 'outgoing', None,
            _('send changes not found in the target repository')),
           ('b', 'bundle', None,
            _('send changes not in target as a binary bundle')),
           ('r', 'rev', [], _('a revision to send')),
           ('s', 'subject', '',
            _('subject of first message (intro or single patch)')),
           ('t', 'to', [], _('email addresses of recipients')),
           ('', 'force', None,
            _('run even when remote repository is unrelated (with -b)')),
           ('', 'base', [],
            _('a base changeset to specify instead of a destination (with -b)')),
          ] + commands.remoteopts,
          _('hg email [OPTION]... [DEST]...'))
 }