patchbomb: ignore exception if pager quits.

hgext/patchbomb.py

@@ -1,286 +1,290 b''
 # Command for sending a collection of 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.
 #
 # It is best to run this script with the "-n" (test only) flag before
 # firing it up "for real", in which case it will use your pager to
 # display each of the messages that it would send.
 #
 # The "-m" (mbox) option will create an mbox file instead of sending
 # the messages directly. This can be reviewed e.g. with "mutt -R -f mbox",
 # and finally sent with "formail -s sendmail -bm -t < mbox".
 #
 # To configure a default mail host, add a section like this to your
 # hgrc file:
 #
 # [smtp]
 # host = my_mail_host
 # port = 1025
 # tls = yes # or omit if not needed
 # username = user     # if SMTP authentication required
 # password = password # if SMTP authentication required - PLAINTEXT
 #
 # To configure other defaults, add a section like this to your hgrc
 # file:
 #
 # [patchbomb]
 # from = My Name <my@email>
 # to = recipient1, recipient2, ...
 # cc = cc1, cc2, ...
 
 from mercurial.demandload import *
 demandload(globals(), '''email.MIMEMultipart email.MIMEText email.Utils
                          mercurial:commands,hg,ui
-                         os popen2 smtplib socket sys tempfile time''')
+                         os errno popen2 smtplib socket sys tempfile time''')
 from mercurial.i18n import gettext as _
 
 try:
     # readline gives raw_input editing capabilities, but is not
     # present on windows
     import readline
 except ImportError: pass
 
 def diffstat(patch):
     fd, name = tempfile.mkstemp()
     try:
         p = popen2.Popen3('diffstat -p1 -w79 2>/dev/null > ' + name)
         try:
             for line in patch: print >> p.tochild, line
             p.tochild.close()
             if p.wait(): return
             fp = os.fdopen(fd, 'r')
             stat = []
             for line in fp: stat.append(line.lstrip())
             last = stat.pop()
             stat.insert(0, last)
             stat = ''.join(stat)
             if stat.startswith('0 files'): raise ValueError
             return stat
         except: raise
     finally:
         try: os.unlink(name)
         except: pass
 
 def patchbomb(ui, repo, *revs, **opts):
     '''send changesets as a series of patch emails
 
     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".'''
     def prompt(prompt, default = None, rest = ': ', empty_ok = False):
         if default: prompt += ' [%s]' % default
         prompt += rest
         while True:
             r = raw_input(prompt)
             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):
         if not prompt(s, default = 'y', rest = '? ').lower().startswith('y'):
             raise ValueError
 
     def cdiffstat(summary, patch):
         s = diffstat(patch)
         if s:
             if summary:
                 ui.write(summary, '\n')
                 ui.write(s, '\n')
             confirm(_('Does the diffstat above look okay'))
         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'): break
             desc.append(line)
         if not node: raise ValueError
 
         #body = ('\n'.join(desc[1:]).strip() or
         #        'Patch subject is complete summary.')
         #body += '\n\n\n'
 
         if opts['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['diffstat']:
             body += cdiffstat('\n'.join(desc), patch) + '\n\n'
         body += '\n'.join(patch)
         msg = email.MIMEText.MIMEText(body)
         if total == 1:
             subj = '[PATCH] ' + desc[0].strip()
         else:
             subj = '[PATCH %d of %d] %s' % (idx, total, desc[0].strip())
         if subj.endswith('.'): subj = subj[:-1]
         msg['Subject'] = subj
         msg['X-Mercurial-Node'] = node
         return msg
 
     start_time = int(time.time())
 
     def genmsgid(id):
         return '<%s.%s@%s>' % (id[:20], start_time, socket.getfqdn())
 
     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})
 
     jumbo = []
     msgs = []
 
     ui.write(_('This patch series consists of %d patches.\n\n') % len(patches))
 
     for p, i in zip(patches, range(len(patches))):
         jumbo.extend(p)
         msgs.append(makepatch(p, i + 1, len(patches)))
 
     sender = (opts['from'] or ui.config('patchbomb', 'from') or
               prompt('From', ui.username()))
 
     def getaddrs(opt, prpt, default = None):
         addrs = opts[opt] or (ui.config('patchbomb', opt) or
                               prompt(prpt, default = default)).split(',')
         return [a.strip() for a in addrs if a.strip()]
     to = getaddrs('to', 'To')
     cc = getaddrs('cc', 'Cc', '')
 
     if len(patches) > 1:
         ui.write(_('\nWrite the introductory message for the patch series.\n\n'))
 
         msg = email.MIMEMultipart.MIMEMultipart()
         msg['Subject'] = '[PATCH 0 of %d] %s' % (
             len(patches),
             opts['subject'] or
             prompt('Subject:', rest = ' [PATCH 0 of %d] ' % len(patches)))
 
         ui.write(_('Finish with ^D or a dot on a line by itself.\n\n'))
 
         body = []
 
         while True:
             try: l = raw_input()
             except EOFError: break
             if l == '.': break
             body.append(l)
 
         msg.attach(email.MIMEText.MIMEText('\n'.join(body) + '\n'))
 
         if opts['diffstat']:
             d = cdiffstat(_('Final summary:\n'), jumbo)
             if d: msg.attach(email.MIMEText.MIMEText(d))
 
         msgs.insert(0, msg)
 
     ui.write('\n')
 
     if not opts['test'] and not opts['mbox']:
         s = smtplib.SMTP()
         s.connect(host = ui.config('smtp', 'host', 'mail'),
                   port = int(ui.config('smtp', 'port', 25)))
         if ui.configbool('smtp', 'tls'):
             s.ehlo()
             s.starttls()
             s.ehlo()
         username = ui.config('smtp', 'username')
         password = ui.config('smtp', 'password')
         if username and password:
             s.login(username, password)
     parent = None
     tz = time.strftime('%z')
     sender_addr = email.Utils.parseaddr(sender)[1]
     for m 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'] = time.strftime('%a, %e %b %Y %T ', time.localtime(start_time)) + tz
         start_time += 1
         m['From'] = sender
         m['To'] = ', '.join(to)
         if cc: m['Cc'] = ', '.join(cc)
         if opts['test']:
             ui.status('Displaying ', m['Subject'], ' ...\n')
             fp = os.popen(os.getenv('PAGER', 'more'), 'w')
-            fp.write(m.as_string(0))
-            fp.write('\n')
+            try:
+                fp.write(m.as_string(0))
+                fp.write('\n')
+            except IOError, inst:
+                if inst.errno != errno.EPIPE:
+                    raise
             fp.close()
         elif opts['mbox']:
             ui.status('Writing ', m['Subject'], ' ...\n')
             fp = open(opts['mbox'], m.has_key('In-Reply-To') and 'ab+' or 'wb+')
             date = time.asctime(time.localtime(start_time))
             fp.write('From %s %s\n' % (sender_addr, date))
             fp.write(m.as_string(0))
             fp.write('\n\n')
             fp.close()
         else:
             ui.status('Sending ', m['Subject'], ' ...\n')
             s.sendmail(sender, to + cc, m.as_string(0))
     if not opts['test'] and not opts['mbox']:
         s.close()
 
 cmdtable = {
     'email':
     (patchbomb,
      [('c', 'cc', [], 'email addresses of copy recipients'),
       ('d', 'diffstat', None, 'add diffstat output to messages'),
       ('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'),
       ('s', 'subject', '', 'subject of introductory message'),
       ('t', 'to', [], 'email addresses of recipients')],
      "hg email [OPTION]... [REV]...")
     }