#! /usr/bin/env python
__version__ = '1.4.0'
# Copyright (c) 2015-2016 Matthieu Moy and others
# Copyright (c) 2012-2014 Michael Haggerty and others
# Derived from contrib/hooks/post-receive-email, which is
# Copyright (c) 2007 Andy Parkins
# and also includes contributions by other authors.
#
# This file is part of git-multimail.
#
# git-multimail is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License version
# 2 as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# .
"""Generate notification emails for pushes to a git repository.
This hook sends emails describing changes introduced by pushes to a
git repository. For each reference that was changed, it emits one
ReferenceChange email summarizing how the reference was changed,
followed by one Revision email for each new commit that was introduced
by the reference change.
Each commit is announced in exactly one Revision email. If the same
commit is merged into another branch in the same or a later push, then
the ReferenceChange email will list the commit's SHA1 and its one-line
summary, but no new Revision email will be generated.
This script is designed to be used as a "post-receive" hook in a git
repository (see githooks(5)). It can also be used as an "update"
script, but this usage is not completely reliable and is deprecated.
To help with debugging, this script accepts a --stdout option, which
causes the emails to be written to standard output rather than sent
using sendmail.
See the accompanying README file for the complete documentation.
"""
import sys
import os
import re
import bisect
import socket
import subprocess
import shlex
import optparse
import logging
import smtplib
try:
import ssl
except ImportError:
# Python < 2.6 do not have ssl, but that's OK if we don't use it.
pass
import time
import cgi
PYTHON3 = sys.version_info >= (3, 0)
if sys.version_info <= (2, 5):
def all(iterable):
for element in iterable:
if not element:
return False
return True
def is_ascii(s):
return all(ord(c) < 128 and ord(c) > 0 for c in s)
if PYTHON3:
def is_string(s):
return isinstance(s, str)
def str_to_bytes(s):
return s.encode(ENCODING)
def bytes_to_str(s, errors='strict'):
return s.decode(ENCODING, errors)
unicode = str
def write_str(f, msg):
# Try outputing with the default encoding. If it fails,
# try UTF-8.
try:
f.buffer.write(msg.encode(sys.getdefaultencoding()))
except UnicodeEncodeError:
f.buffer.write(msg.encode(ENCODING))
def read_line(f):
# Try reading with the default encoding. If it fails,
# try UTF-8.
out = f.buffer.readline()
try:
return out.decode(sys.getdefaultencoding())
except UnicodeEncodeError:
return out.decode(ENCODING)
else:
def is_string(s):
try:
return isinstance(s, basestring)
except NameError: # Silence Pyflakes warning
raise
def str_to_bytes(s):
return s
def bytes_to_str(s, errors='strict'):
return s
def write_str(f, msg):
f.write(msg)
def read_line(f):
return f.readline()
def next(it):
return it.next()
try:
from email.charset import Charset
from email.utils import make_msgid
from email.utils import getaddresses
from email.utils import formataddr
from email.utils import formatdate
from email.header import Header
except ImportError:
# Prior to Python 2.5, the email module used different names:
from email.Charset import Charset
from email.Utils import make_msgid
from email.Utils import getaddresses
from email.Utils import formataddr
from email.Utils import formatdate
from email.Header import Header
DEBUG = False
ZEROS = '0' * 40
LOGBEGIN = '- Log -----------------------------------------------------------------\n'
LOGEND = '-----------------------------------------------------------------------\n'
ADDR_HEADERS = set(['from', 'to', 'cc', 'bcc', 'reply-to', 'sender'])
# It is assumed in many places that the encoding is uniformly UTF-8,
# so changing these constants is unsupported. But define them here
# anyway, to make it easier to find (at least most of) the places
# where the encoding is important.
(ENCODING, CHARSET) = ('UTF-8', 'utf-8')
REF_CREATED_SUBJECT_TEMPLATE = (
'%(emailprefix)s%(refname_type)s %(short_refname)s created'
' (now %(newrev_short)s)'
)
REF_UPDATED_SUBJECT_TEMPLATE = (
'%(emailprefix)s%(refname_type)s %(short_refname)s updated'
' (%(oldrev_short)s -> %(newrev_short)s)'
)
REF_DELETED_SUBJECT_TEMPLATE = (
'%(emailprefix)s%(refname_type)s %(short_refname)s deleted'
' (was %(oldrev_short)s)'
)
COMBINED_REFCHANGE_REVISION_SUBJECT_TEMPLATE = (
'%(emailprefix)s%(refname_type)s %(short_refname)s updated: %(oneline)s'
)
REFCHANGE_HEADER_TEMPLATE = """\
Date: %(send_date)s
To: %(recipients)s
Subject: %(subject)s
MIME-Version: 1.0
Content-Type: text/%(contenttype)s; charset=%(charset)s
Content-Transfer-Encoding: 8bit
Message-ID: %(msgid)s
From: %(fromaddr)s
Reply-To: %(reply_to)s
X-Git-Host: %(fqdn)s
X-Git-Repo: %(repo_shortname)s
X-Git-Refname: %(refname)s
X-Git-Reftype: %(refname_type)s
X-Git-Oldrev: %(oldrev)s
X-Git-Newrev: %(newrev)s
X-Git-NotificationType: ref_changed
X-Git-Multimail-Version: %(multimail_version)s
Auto-Submitted: auto-generated
"""
REFCHANGE_INTRO_TEMPLATE = """\
This is an automated email from the git hooks/post-receive script.
%(pusher)s pushed a change to %(refname_type)s %(short_refname)s
in repository %(repo_shortname)s.
"""
FOOTER_TEMPLATE = """\
-- \n\
To stop receiving notification emails like this one, please contact
%(administrator)s.
"""
REWIND_ONLY_TEMPLATE = """\
This update removed existing revisions from the reference, leaving the
reference pointing at a previous point in the repository history.
* -- * -- N %(refname)s (%(newrev_short)s)
\\
O -- O -- O (%(oldrev_short)s)
Any revisions marked "omit" are not gone; other references still
refer to them. Any revisions marked "discard" are gone forever.
"""
NON_FF_TEMPLATE = """\
This update added new revisions after undoing existing revisions.
That is to say, some revisions that were in the old version of the
%(refname_type)s are not in the new version. This situation occurs
when a user --force pushes a change and generates a repository
containing something like this:
* -- * -- B -- O -- O -- O (%(oldrev_short)s)
\\
N -- N -- N %(refname)s (%(newrev_short)s)
You should already have received notification emails for all of the O
revisions, and so the following emails describe only the N revisions
from the common base, B.
Any revisions marked "omit" are not gone; other references still
refer to them. Any revisions marked "discard" are gone forever.
"""
NO_NEW_REVISIONS_TEMPLATE = """\
No new revisions were added by this update.
"""
DISCARDED_REVISIONS_TEMPLATE = """\
This change permanently discards the following revisions:
"""
NO_DISCARDED_REVISIONS_TEMPLATE = """\
The revisions that were on this %(refname_type)s are still contained in
other references; therefore, this change does not discard any commits
from the repository.
"""
NEW_REVISIONS_TEMPLATE = """\
The %(tot)s revisions listed above as "new" are entirely new to this
repository and will be described in separate emails. The revisions
listed as "add" were already present in the repository and have only
been added to this reference.
"""
TAG_CREATED_TEMPLATE = """\
at %(newrev_short)-8s (%(newrev_type)s)
"""
TAG_UPDATED_TEMPLATE = """\
*** WARNING: tag %(short_refname)s was modified! ***
from %(oldrev_short)-8s (%(oldrev_type)s)
to %(newrev_short)-8s (%(newrev_type)s)
"""
TAG_DELETED_TEMPLATE = """\
*** WARNING: tag %(short_refname)s was deleted! ***
"""
# The template used in summary tables. It looks best if this uses the
# same alignment as TAG_CREATED_TEMPLATE and TAG_UPDATED_TEMPLATE.
BRIEF_SUMMARY_TEMPLATE = """\
%(action)8s %(rev_short)-8s %(text)s
"""
NON_COMMIT_UPDATE_TEMPLATE = """\
This is an unusual reference change because the reference did not
refer to a commit either before or after the change. We do not know
how to provide full information about this reference change.
"""
REVISION_HEADER_TEMPLATE = """\
Date: %(send_date)s
To: %(recipients)s
Cc: %(cc_recipients)s
Subject: %(emailprefix)s%(num)02d/%(tot)02d: %(oneline)s
MIME-Version: 1.0
Content-Type: text/%(contenttype)s; charset=%(charset)s
Content-Transfer-Encoding: 8bit
From: %(fromaddr)s
Reply-To: %(reply_to)s
In-Reply-To: %(reply_to_msgid)s
References: %(reply_to_msgid)s
X-Git-Host: %(fqdn)s
X-Git-Repo: %(repo_shortname)s
X-Git-Refname: %(refname)s
X-Git-Reftype: %(refname_type)s
X-Git-Rev: %(rev)s
X-Git-NotificationType: diff
X-Git-Multimail-Version: %(multimail_version)s
Auto-Submitted: auto-generated
"""
REVISION_INTRO_TEMPLATE = """\
This is an automated email from the git hooks/post-receive script.
%(pusher)s pushed a commit to %(refname_type)s %(short_refname)s
in repository %(repo_shortname)s.
"""
LINK_TEXT_TEMPLATE = """\
View the commit online:
%(browse_url)s
"""
LINK_HTML_TEMPLATE = """\
View the commit online.
"""
REVISION_FOOTER_TEMPLATE = FOOTER_TEMPLATE
# Combined, meaning refchange+revision email (for single-commit additions)
COMBINED_HEADER_TEMPLATE = """\
Date: %(send_date)s
To: %(recipients)s
Subject: %(subject)s
MIME-Version: 1.0
Content-Type: text/%(contenttype)s; charset=%(charset)s
Content-Transfer-Encoding: 8bit
Message-ID: %(msgid)s
From: %(fromaddr)s
Reply-To: %(reply_to)s
X-Git-Host: %(fqdn)s
X-Git-Repo: %(repo_shortname)s
X-Git-Refname: %(refname)s
X-Git-Reftype: %(refname_type)s
X-Git-Oldrev: %(oldrev)s
X-Git-Newrev: %(newrev)s
X-Git-Rev: %(rev)s
X-Git-NotificationType: ref_changed_plus_diff
X-Git-Multimail-Version: %(multimail_version)s
Auto-Submitted: auto-generated
"""
COMBINED_INTRO_TEMPLATE = """\
This is an automated email from the git hooks/post-receive script.
%(pusher)s pushed a commit to %(refname_type)s %(short_refname)s
in repository %(repo_shortname)s.
"""
COMBINED_FOOTER_TEMPLATE = FOOTER_TEMPLATE
class CommandError(Exception):
def __init__(self, cmd, retcode):
self.cmd = cmd
self.retcode = retcode
Exception.__init__(
self,
'Command "%s" failed with retcode %s' % (' '.join(cmd), retcode,)
)
class ConfigurationException(Exception):
pass
# The "git" program (this could be changed to include a full path):
GIT_EXECUTABLE = 'git'
# How "git" should be invoked (including global arguments), as a list
# of words. This variable is usually initialized automatically by
# read_git_output() via choose_git_command(), but if a value is set
# here then it will be used unconditionally.
GIT_CMD = None
def choose_git_command():
"""Decide how to invoke git, and record the choice in GIT_CMD."""
global GIT_CMD
if GIT_CMD is None:
try:
# Check to see whether the "-c" option is accepted (it was
# only added in Git 1.7.2). We don't actually use the
# output of "git --version", though if we needed more
# specific version information this would be the place to
# do it.
cmd = [GIT_EXECUTABLE, '-c', 'foo.bar=baz', '--version']
read_output(cmd)
GIT_CMD = [GIT_EXECUTABLE, '-c', 'i18n.logoutputencoding=%s' % (ENCODING,)]
except CommandError:
GIT_CMD = [GIT_EXECUTABLE]
def read_git_output(args, input=None, keepends=False, **kw):
"""Read the output of a Git command."""
if GIT_CMD is None:
choose_git_command()
return read_output(GIT_CMD + args, input=input, keepends=keepends, **kw)
def read_output(cmd, input=None, keepends=False, **kw):
if input:
stdin = subprocess.PIPE
input = str_to_bytes(input)
else:
stdin = None
errors = 'strict'
if 'errors' in kw:
errors = kw['errors']
del kw['errors']
p = subprocess.Popen(
tuple(str_to_bytes(w) for w in cmd),
stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kw
)
(out, err) = p.communicate(input)
out = bytes_to_str(out, errors=errors)
retcode = p.wait()
if retcode:
raise CommandError(cmd, retcode)
if not keepends:
out = out.rstrip('\n\r')
return out
def read_git_lines(args, keepends=False, **kw):
"""Return the lines output by Git command.
Return as single lines, with newlines stripped off."""
return read_git_output(args, keepends=True, **kw).splitlines(keepends)
def git_rev_list_ish(cmd, spec, args=None, **kw):
"""Common functionality for invoking a 'git rev-list'-like command.
Parameters:
* cmd is the Git command to run, e.g., 'rev-list' or 'log'.
* spec is a list of revision arguments to pass to the named
command. If None, this function returns an empty list.
* args is a list of extra arguments passed to the named command.
* All other keyword arguments (if any) are passed to the
underlying read_git_lines() function.
Return the output of the Git command in the form of a list, one
entry per output line.
"""
if spec is None:
return []
if args is None:
args = []
args = [cmd, '--stdin'] + args
spec_stdin = ''.join(s + '\n' for s in spec)
return read_git_lines(args, input=spec_stdin, **kw)
def git_rev_list(spec, **kw):
"""Run 'git rev-list' with the given list of revision arguments.
See git_rev_list_ish() for parameter and return value
documentation.
"""
return git_rev_list_ish('rev-list', spec, **kw)
def git_log(spec, **kw):
"""Run 'git log' with the given list of revision arguments.
See git_rev_list_ish() for parameter and return value
documentation.
"""
return git_rev_list_ish('log', spec, **kw)
def header_encode(text, header_name=None):
"""Encode and line-wrap the value of an email header field."""
# Convert to unicode, if required.
if not isinstance(text, unicode):
text = unicode(text, 'utf-8')
if is_ascii(text):
charset = 'ascii'
else:
charset = 'utf-8'
return Header(text, header_name=header_name, charset=Charset(charset)).encode()
def addr_header_encode(text, header_name=None):
"""Encode and line-wrap the value of an email header field containing
email addresses."""
# Convert to unicode, if required.
if not isinstance(text, unicode):
text = unicode(text, 'utf-8')
text = ', '.join(
formataddr((header_encode(name), emailaddr))
for name, emailaddr in getaddresses([text])
)
if is_ascii(text):
charset = 'ascii'
else:
charset = 'utf-8'
return Header(text, header_name=header_name, charset=Charset(charset)).encode()
class Config(object):
def __init__(self, section, git_config=None):
"""Represent a section of the git configuration.
If git_config is specified, it is passed to "git config" in
the GIT_CONFIG environment variable, meaning that "git config"
will read the specified path rather than the Git default
config paths."""
self.section = section
if git_config:
self.env = os.environ.copy()
self.env['GIT_CONFIG'] = git_config
else:
self.env = None
@staticmethod
def _split(s):
"""Split NUL-terminated values."""
words = s.split('\0')
assert words[-1] == ''
return words[:-1]
@staticmethod
def add_config_parameters(c):
"""Add configuration parameters to Git.
c is either an str or a list of str, each element being of the
form 'var=val' or 'var', with the same syntax and meaning as
the argument of 'git -c var=val'.
"""
if isinstance(c, str):
c = (c,)
parameters = os.environ.get('GIT_CONFIG_PARAMETERS', '')
if parameters:
parameters += ' '
# git expects GIT_CONFIG_PARAMETERS to be of the form
# "'name1=value1' 'name2=value2' 'name3=value3'"
# including everything inside the double quotes (but not the double
# quotes themselves). Spacing is critical. Also, if a value contains
# a literal single quote that quote must be represented using the
# four character sequence: '\''
parameters += ' '.join("'" + x.replace("'", "'\\''") + "'" for x in c)
os.environ['GIT_CONFIG_PARAMETERS'] = parameters
def get(self, name, default=None):
try:
values = self._split(read_git_output(
['config', '--get', '--null', '%s.%s' % (self.section, name)],
env=self.env, keepends=True,
))
assert len(values) == 1
return values[0]
except CommandError:
return default
def get_bool(self, name, default=None):
try:
value = read_git_output(
['config', '--get', '--bool', '%s.%s' % (self.section, name)],
env=self.env,
)
except CommandError:
return default
return value == 'true'
def get_all(self, name, default=None):
"""Read a (possibly multivalued) setting from the configuration.
Return the result as a list of values, or default if the name
is unset."""
try:
return self._split(read_git_output(
['config', '--get-all', '--null', '%s.%s' % (self.section, name)],
env=self.env, keepends=True,
))
except CommandError:
t, e, traceback = sys.exc_info()
if e.retcode == 1:
# "the section or key is invalid"; i.e., there is no
# value for the specified key.
return default
else:
raise
def set(self, name, value):
read_git_output(
['config', '%s.%s' % (self.section, name), value],
env=self.env,
)
def add(self, name, value):
read_git_output(
['config', '--add', '%s.%s' % (self.section, name), value],
env=self.env,
)
def __contains__(self, name):
return self.get_all(name, default=None) is not None
# We don't use this method anymore internally, but keep it here in
# case somebody is calling it from their own code:
def has_key(self, name):
return name in self
def unset_all(self, name):
try:
read_git_output(
['config', '--unset-all', '%s.%s' % (self.section, name)],
env=self.env,
)
except CommandError:
t, e, traceback = sys.exc_info()
if e.retcode == 5:
# The name doesn't exist, which is what we wanted anyway...
pass
else:
raise
def set_recipients(self, name, value):
self.unset_all(name)
for pair in getaddresses([value]):
self.add(name, formataddr(pair))
def generate_summaries(*log_args):
"""Generate a brief summary for each revision requested.
log_args are strings that will be passed directly to "git log" as
revision selectors. Iterate over (sha1_short, subject) for each
commit specified by log_args (subject is the first line of the
commit message as a string without EOLs)."""
cmd = [
'log', '--abbrev', '--format=%h %s',
] + list(log_args) + ['--']
for line in read_git_lines(cmd):
yield tuple(line.split(' ', 1))
def limit_lines(lines, max_lines):
for (index, line) in enumerate(lines):
if index < max_lines:
yield line
if index >= max_lines:
yield '... %d lines suppressed ...\n' % (index + 1 - max_lines,)
def limit_linelength(lines, max_linelength):
for line in lines:
# Don't forget that lines always include a trailing newline.
if len(line) > max_linelength + 1:
line = line[:max_linelength - 7] + ' [...]\n'
yield line
class CommitSet(object):
"""A (constant) set of object names.
The set should be initialized with full SHA1 object names. The
__contains__() method returns True iff its argument is an
abbreviation of any the names in the set."""
def __init__(self, names):
self._names = sorted(names)
def __len__(self):
return len(self._names)
def __contains__(self, sha1_abbrev):
"""Return True iff this set contains sha1_abbrev (which might be abbreviated)."""
i = bisect.bisect_left(self._names, sha1_abbrev)
return i < len(self) and self._names[i].startswith(sha1_abbrev)
class GitObject(object):
def __init__(self, sha1, type=None):
if sha1 == ZEROS:
self.sha1 = self.type = self.commit_sha1 = None
else:
self.sha1 = sha1
self.type = type or read_git_output(['cat-file', '-t', self.sha1])
if self.type == 'commit':
self.commit_sha1 = self.sha1
elif self.type == 'tag':
try:
self.commit_sha1 = read_git_output(
['rev-parse', '--verify', '%s^0' % (self.sha1,)]
)
except CommandError:
# Cannot deref tag to determine commit_sha1
self.commit_sha1 = None
else:
self.commit_sha1 = None
self.short = read_git_output(['rev-parse', '--short', sha1])
def get_summary(self):
"""Return (sha1_short, subject) for this commit."""
if not self.sha1:
raise ValueError('Empty commit has no summary')
return next(iter(generate_summaries('--no-walk', self.sha1)))
def __eq__(self, other):
return isinstance(other, GitObject) and self.sha1 == other.sha1
def __hash__(self):
return hash(self.sha1)
def __nonzero__(self):
return bool(self.sha1)
def __bool__(self):
"""Python 2 backward compatibility"""
return self.__nonzero__()
def __str__(self):
return self.sha1 or ZEROS
class Change(object):
"""A Change that has been made to the Git repository.
Abstract class from which both Revisions and ReferenceChanges are
derived. A Change knows how to generate a notification email
describing itself."""
def __init__(self, environment):
self.environment = environment
self._values = None
self._contains_html_diff = False
def _contains_diff(self):
# We do contain a diff, should it be rendered in HTML?
if self.environment.commit_email_format == "html":
self._contains_html_diff = True
def _compute_values(self):
"""Return a dictionary {keyword: expansion} for this Change.
Derived classes overload this method to add more entries to
the return value. This method is used internally by
get_values(). The return value should always be a new
dictionary."""
values = self.environment.get_values()
fromaddr = self.environment.get_fromaddr(change=self)
if fromaddr is not None:
values['fromaddr'] = fromaddr
values['multimail_version'] = get_version()
return values
# Aliases usable in template strings. Tuple of pairs (destination,
# source).
VALUES_ALIAS = (
("id", "newrev"),
)
def get_values(self, **extra_values):
"""Return a dictionary {keyword: expansion} for this Change.
Return a dictionary mapping keywords to the values that they
should be expanded to for this Change (used when interpolating
template strings). If any keyword arguments are supplied, add
those to the return value as well. The return value is always
a new dictionary."""
if self._values is None:
self._values = self._compute_values()
values = self._values.copy()
if extra_values:
values.update(extra_values)
for alias, val in self.VALUES_ALIAS:
values[alias] = values[val]
return values
def expand(self, template, **extra_values):
"""Expand template.
Expand the template (which should be a string) using string
interpolation of the values for this Change. If any keyword
arguments are provided, also include those in the keywords
available for interpolation."""
return template % self.get_values(**extra_values)
def expand_lines(self, template, html_escape_val=False, **extra_values):
"""Break template into lines and expand each line."""
values = self.get_values(**extra_values)
if html_escape_val:
for k in values:
if is_string(values[k]):
values[k] = cgi.escape(values[k], True)
for line in template.splitlines(True):
yield line % values
def expand_header_lines(self, template, **extra_values):
"""Break template into lines and expand each line as an RFC 2822 header.
Encode values and split up lines that are too long. Silently
skip lines that contain references to unknown variables."""
values = self.get_values(**extra_values)
if self._contains_html_diff:
self._content_type = 'html'
else:
self._content_type = 'plain'
values['contenttype'] = self._content_type
for line in template.splitlines():
(name, value) = line.split(': ', 1)
try:
value = value % values
except KeyError:
t, e, traceback = sys.exc_info()
if DEBUG:
self.environment.log_warning(
'Warning: unknown variable %r in the following line; line skipped:\n'
' %s\n'
% (e.args[0], line,)
)
else:
if name.lower() in ADDR_HEADERS:
value = addr_header_encode(value, name)
else:
value = header_encode(value, name)
for splitline in ('%s: %s\n' % (name, value)).splitlines(True):
yield splitline
def generate_email_header(self):
"""Generate the RFC 2822 email headers for this Change, a line at a time.
The output should not include the trailing blank line."""
raise NotImplementedError()
def generate_browse_link(self, base_url):
"""Generate a link to an online repository browser."""
return iter(())
def generate_email_intro(self, html_escape_val=False):
"""Generate the email intro for this Change, a line at a time.
The output will be used as the standard boilerplate at the top
of the email body."""
raise NotImplementedError()
def generate_email_body(self):
"""Generate the main part of the email body, a line at a time.
The text in the body might be truncated after a specified
number of lines (see multimailhook.emailmaxlines)."""
raise NotImplementedError()
def generate_email_footer(self, html_escape_val):
"""Generate the footer of the email, a line at a time.
The footer is always included, irrespective of
multimailhook.emailmaxlines."""
raise NotImplementedError()
def _wrap_for_html(self, lines):
"""Wrap the lines in HTML tag when using HTML format.
Escape special HTML characters and add and
tags around
the given lines if we should be generating HTML as indicated by
self._contains_html_diff being set to true.
"""
if self._contains_html_diff:
yield "\n"
for line in lines:
yield cgi.escape(line)
yield '\n'
else:
for line in lines:
yield line
def generate_email(self, push, body_filter=None, extra_header_values={}):
"""Generate an email describing this change.
Iterate over the lines (including the header lines) of an
email describing this change. If body_filter is not None,
then use it to filter the lines that are intended for the
email body.
The extra_header_values field is received as a dict and not as
**kwargs, to allow passing other keyword arguments in the
future (e.g. passing extra values to generate_email_intro()"""
for line in self.generate_email_header(**extra_header_values):
yield line
yield '\n'
html_escape_val = (self.environment.html_in_intro and
self._contains_html_diff)
intro = self.generate_email_intro(html_escape_val)
if not self.environment.html_in_intro:
intro = self._wrap_for_html(intro)
for line in intro:
yield line
if self.environment.commitBrowseURL:
for line in self.generate_browse_link(self.environment.commitBrowseURL):
yield line
body = self.generate_email_body(push)
if body_filter is not None:
body = body_filter(body)
diff_started = False
if self._contains_html_diff:
# "white-space: pre" is the default, but we need to
# specify it again in case the message is viewed in a
# webmail which wraps it in an element setting white-space
# to something else (Zimbra does this and sets
# white-space: pre-line).
yield ''
for line in body:
if self._contains_html_diff:
# This is very, very naive. It would be much better to really
# parse the diff, i.e. look at how many lines do we have in
# the hunk headers instead of blindly highlighting everything
# that looks like it might be part of a diff.
bgcolor = ''
fgcolor = ''
if line.startswith('--- a/'):
diff_started = True
bgcolor = 'e0e0ff'
elif line.startswith('diff ') or line.startswith('index '):
diff_started = True
fgcolor = '808080'
elif diff_started:
if line.startswith('+++ '):
bgcolor = 'e0e0ff'
elif line.startswith('@@'):
bgcolor = 'e0e0e0'
elif line.startswith('+'):
bgcolor = 'e0ffe0'
elif line.startswith('-'):
bgcolor = 'ffe0e0'
elif line.startswith('commit '):
fgcolor = '808000'
elif line.startswith(' '):
fgcolor = '404040'
# Chop the trailing LF, we don't want it inside .
line = cgi.escape(line[:-1])
if bgcolor or fgcolor:
style = 'display:block; white-space:pre;'
if bgcolor:
style += 'background:#' + bgcolor + ';'
if fgcolor:
style += 'color:#' + fgcolor + ';'
# Use a %s\n" % (style, line)
else:
line = line + '\n'
yield line
if self._contains_html_diff:
yield ''
html_escape_val = (self.environment.html_in_footer and
self._contains_html_diff)
footer = self.generate_email_footer(html_escape_val)
if not self.environment.html_in_footer:
footer = self._wrap_for_html(footer)
for line in footer:
yield line
def get_specific_fromaddr(self):
"""For kinds of Changes which specify it, return the kind-specific
From address to use."""
return None
class Revision(Change):
"""A Change consisting of a single git commit."""
CC_RE = re.compile(r'^\s*C[Cc]:\s*(?P[^#]+@[^\s#]*)\s*(#.*)?$')
def __init__(self, reference_change, rev, num, tot):
Change.__init__(self, reference_change.environment)
self.reference_change = reference_change
self.rev = rev
self.change_type = self.reference_change.change_type
self.refname = self.reference_change.refname
self.num = num
self.tot = tot
self.author = read_git_output(['log', '--no-walk', '--format=%aN <%aE>', self.rev.sha1])
self.recipients = self.environment.get_revision_recipients(self)
self.cc_recipients = ''
if self.environment.get_scancommitforcc():
self.cc_recipients = ', '.join(to.strip() for to in self._cc_recipients())
if self.cc_recipients:
self.environment.log_msg(
'Add %s to CC for %s' % (self.cc_recipients, self.rev.sha1))
def _cc_recipients(self):
cc_recipients = []
message = read_git_output(['log', '--no-walk', '--format=%b', self.rev.sha1])
lines = message.strip().split('\n')
for line in lines:
m = re.match(self.CC_RE, line)
if m:
cc_recipients.append(m.group('to'))
return cc_recipients
def _compute_values(self):
values = Change._compute_values(self)
oneline = read_git_output(
['log', '--format=%s', '--no-walk', self.rev.sha1]
)
max_subject_length = self.environment.get_max_subject_length()
if max_subject_length > 0 and len(oneline) > max_subject_length:
oneline = oneline[:max_subject_length - 6] + ' [...]'
values['rev'] = self.rev.sha1
values['rev_short'] = self.rev.short
values['change_type'] = self.change_type
values['refname'] = self.refname
values['newrev'] = self.rev.sha1
values['short_refname'] = self.reference_change.short_refname
values['refname_type'] = self.reference_change.refname_type
values['reply_to_msgid'] = self.reference_change.msgid
values['num'] = self.num
values['tot'] = self.tot
values['recipients'] = self.recipients
if self.cc_recipients:
values['cc_recipients'] = self.cc_recipients
values['oneline'] = oneline
values['author'] = self.author
reply_to = self.environment.get_reply_to_commit(self)
if reply_to:
values['reply_to'] = reply_to
return values
def generate_email_header(self, **extra_values):
for line in self.expand_header_lines(
REVISION_HEADER_TEMPLATE, **extra_values
):
yield line
def generate_browse_link(self, base_url):
if '%(' not in base_url:
base_url += '%(id)s'
url = "".join(self.expand_lines(base_url))
if self._content_type == 'html':
for line in self.expand_lines(LINK_HTML_TEMPLATE,
html_escape_val=True,
browse_url=url):
yield line
elif self._content_type == 'plain':
for line in self.expand_lines(LINK_TEXT_TEMPLATE,
html_escape_val=False,
browse_url=url):
yield line
else:
raise NotImplementedError("Content-type %s unsupported. Please report it as a bug.")
def generate_email_intro(self, html_escape_val=False):
for line in self.expand_lines(REVISION_INTRO_TEMPLATE,
html_escape_val=html_escape_val):
yield line
def generate_email_body(self, push):
"""Show this revision."""
for line in read_git_lines(
['log'] + self.environment.commitlogopts + ['-1', self.rev.sha1],
keepends=True,
errors='replace'):
if line.startswith('Date: ') and self.environment.date_substitute:
yield self.environment.date_substitute + line[len('Date: '):]
else:
yield line
def generate_email_footer(self, html_escape_val):
return self.expand_lines(REVISION_FOOTER_TEMPLATE,
html_escape_val=html_escape_val)
def generate_email(self, push, body_filter=None, extra_header_values={}):
self._contains_diff()
return Change.generate_email(self, push, body_filter, extra_header_values)
def get_specific_fromaddr(self):
return self.environment.from_commit
class ReferenceChange(Change):
"""A Change to a Git reference.
An abstract class representing a create, update, or delete of a
Git reference. Derived classes handle specific types of reference
(e.g., tags vs. branches). These classes generate the main
reference change email summarizing the reference change and
whether it caused any any commits to be added or removed.
ReferenceChange objects are usually created using the static
create() method, which has the logic to decide which derived class
to instantiate."""
REF_RE = re.compile(r'^refs\/(?P[^\/]+)\/(?P.*)$')
@staticmethod
def create(environment, oldrev, newrev, refname):
"""Return a ReferenceChange object representing the change.
Return an object that represents the type of change that is being
made. oldrev and newrev should be SHA1s or ZEROS."""
old = GitObject(oldrev)
new = GitObject(newrev)
rev = new or old
# The revision type tells us what type the commit is, combined with
# the location of the ref we can decide between
# - working branch
# - tracking branch
# - unannotated tag
# - annotated tag
m = ReferenceChange.REF_RE.match(refname)
if m:
area = m.group('area')
short_refname = m.group('shortname')
else:
area = ''
short_refname = refname
if rev.type == 'tag':
# Annotated tag:
klass = AnnotatedTagChange
elif rev.type == 'commit':
if area == 'tags':
# Non-annotated tag:
klass = NonAnnotatedTagChange
elif area == 'heads':
# Branch:
klass = BranchChange
elif area == 'remotes':
# Tracking branch:
environment.log_warning(
'*** Push-update of tracking branch %r\n'
'*** - incomplete email generated.'
% (refname,)
)
klass = OtherReferenceChange
else:
# Some other reference namespace:
environment.log_warning(
'*** Push-update of strange reference %r\n'
'*** - incomplete email generated.'
% (refname,)
)
klass = OtherReferenceChange
else:
# Anything else (is there anything else?)
environment.log_warning(
'*** Unknown type of update to %r (%s)\n'
'*** - incomplete email generated.'
% (refname, rev.type,)
)
klass = OtherReferenceChange
return klass(
environment,
refname=refname, short_refname=short_refname,
old=old, new=new, rev=rev,
)
def __init__(self, environment, refname, short_refname, old, new, rev):
Change.__init__(self, environment)
self.change_type = {
(False, True): 'create',
(True, True): 'update',
(True, False): 'delete',
}[bool(old), bool(new)]
self.refname = refname
self.short_refname = short_refname
self.old = old
self.new = new
self.rev = rev
self.msgid = make_msgid()
self.diffopts = environment.diffopts
self.graphopts = environment.graphopts
self.logopts = environment.logopts
self.commitlogopts = environment.commitlogopts
self.showgraph = environment.refchange_showgraph
self.showlog = environment.refchange_showlog
self.header_template = REFCHANGE_HEADER_TEMPLATE
self.intro_template = REFCHANGE_INTRO_TEMPLATE
self.footer_template = FOOTER_TEMPLATE
def _compute_values(self):
values = Change._compute_values(self)
values['change_type'] = self.change_type
values['refname_type'] = self.refname_type
values['refname'] = self.refname
values['short_refname'] = self.short_refname
values['msgid'] = self.msgid
values['recipients'] = self.recipients
values['oldrev'] = str(self.old)
values['oldrev_short'] = self.old.short
values['newrev'] = str(self.new)
values['newrev_short'] = self.new.short
if self.old:
values['oldrev_type'] = self.old.type
if self.new:
values['newrev_type'] = self.new.type
reply_to = self.environment.get_reply_to_refchange(self)
if reply_to:
values['reply_to'] = reply_to
return values
def send_single_combined_email(self, known_added_sha1s):
"""Determine if a combined refchange/revision email should be sent
If there is only a single new (non-merge) commit added by a
change, it is useful to combine the ReferenceChange and
Revision emails into one. In such a case, return the single
revision; otherwise, return None.
This method is overridden in BranchChange."""
return None
def generate_combined_email(self, push, revision, body_filter=None, extra_header_values={}):
"""Generate an email describing this change AND specified revision.
Iterate over the lines (including the header lines) of an
email describing this change. If body_filter is not None,
then use it to filter the lines that are intended for the
email body.
The extra_header_values field is received as a dict and not as
**kwargs, to allow passing other keyword arguments in the
future (e.g. passing extra values to generate_email_intro()
This method is overridden in BranchChange."""
raise NotImplementedError
def get_subject(self):
template = {
'create': REF_CREATED_SUBJECT_TEMPLATE,
'update': REF_UPDATED_SUBJECT_TEMPLATE,
'delete': REF_DELETED_SUBJECT_TEMPLATE,
}[self.change_type]
return self.expand(template)
def generate_email_header(self, **extra_values):
if 'subject' not in extra_values:
extra_values['subject'] = self.get_subject()
for line in self.expand_header_lines(
self.header_template, **extra_values
):
yield line
def generate_email_intro(self, html_escape_val=False):
for line in self.expand_lines(self.intro_template,
html_escape_val=html_escape_val):
yield line
def generate_email_body(self, push):
"""Call the appropriate body-generation routine.
Call one of generate_create_summary() /
generate_update_summary() / generate_delete_summary()."""
change_summary = {
'create': self.generate_create_summary,
'delete': self.generate_delete_summary,
'update': self.generate_update_summary,
}[self.change_type](push)
for line in change_summary:
yield line
for line in self.generate_revision_change_summary(push):
yield line
def generate_email_footer(self, html_escape_val):
return self.expand_lines(self.footer_template,
html_escape_val=html_escape_val)
def generate_revision_change_graph(self, push):
if self.showgraph:
args = ['--graph'] + self.graphopts
for newold in ('new', 'old'):
has_newold = False
spec = push.get_commits_spec(newold, self)
for line in git_log(spec, args=args, keepends=True):
if not has_newold:
has_newold = True
yield '\n'
yield 'Graph of %s commits:\n\n' % (
{'new': 'new', 'old': 'discarded'}[newold],)
yield ' ' + line
if has_newold:
yield '\n'
def generate_revision_change_log(self, new_commits_list):
if self.showlog:
yield '\n'
yield 'Detailed log of new commits:\n\n'
for line in read_git_lines(
['log', '--no-walk'] +
self.logopts +
new_commits_list +
['--'],
keepends=True,
):
yield line
def generate_new_revision_summary(self, tot, new_commits_list, push):
for line in self.expand_lines(NEW_REVISIONS_TEMPLATE, tot=tot):
yield line
for line in self.generate_revision_change_graph(push):
yield line
for line in self.generate_revision_change_log(new_commits_list):
yield line
def generate_revision_change_summary(self, push):
"""Generate a summary of the revisions added/removed by this change."""
if self.new.commit_sha1 and not self.old.commit_sha1:
# A new reference was created. List the new revisions
# brought by the new reference (i.e., those revisions that
# were not in the repository before this reference
# change).
sha1s = list(push.get_new_commits(self))
sha1s.reverse()
tot = len(sha1s)
new_revisions = [
Revision(self, GitObject(sha1), num=i + 1, tot=tot)
for (i, sha1) in enumerate(sha1s)
]
if new_revisions:
yield self.expand('This %(refname_type)s includes the following new commits:\n')
yield '\n'
for r in new_revisions:
(sha1, subject) = r.rev.get_summary()
yield r.expand(
BRIEF_SUMMARY_TEMPLATE, action='new', text=subject,
)
yield '\n'
for line in self.generate_new_revision_summary(
tot, [r.rev.sha1 for r in new_revisions], push):
yield line
else:
for line in self.expand_lines(NO_NEW_REVISIONS_TEMPLATE):
yield line
elif self.new.commit_sha1 and self.old.commit_sha1:
# A reference was changed to point at a different commit.
# List the revisions that were removed and/or added *from
# that reference* by this reference change, along with a
# diff between the trees for its old and new values.
# List of the revisions that were added to the branch by
# this update. Note this list can include revisions that
# have already had notification emails; we want such
# revisions in the summary even though we will not send
# new notification emails for them.
adds = list(generate_summaries(
'--topo-order', '--reverse', '%s..%s'
% (self.old.commit_sha1, self.new.commit_sha1,)
))
# List of the revisions that were removed from the branch
# by this update. This will be empty except for
# non-fast-forward updates.
discards = list(generate_summaries(
'%s..%s' % (self.new.commit_sha1, self.old.commit_sha1,)
))
if adds:
new_commits_list = push.get_new_commits(self)
else:
new_commits_list = []
new_commits = CommitSet(new_commits_list)
if discards:
discarded_commits = CommitSet(push.get_discarded_commits(self))
else:
discarded_commits = CommitSet([])
if discards and adds:
for (sha1, subject) in discards:
if sha1 in discarded_commits:
action = 'discard'
else:
action = 'omit'
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action=action,
rev_short=sha1, text=subject,
)
for (sha1, subject) in adds:
if sha1 in new_commits:
action = 'new'
else:
action = 'add'
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action=action,
rev_short=sha1, text=subject,
)
yield '\n'
for line in self.expand_lines(NON_FF_TEMPLATE):
yield line
elif discards:
for (sha1, subject) in discards:
if sha1 in discarded_commits:
action = 'discard'
else:
action = 'omit'
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action=action,
rev_short=sha1, text=subject,
)
yield '\n'
for line in self.expand_lines(REWIND_ONLY_TEMPLATE):
yield line
elif adds:
(sha1, subject) = self.old.get_summary()
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action='from',
rev_short=sha1, text=subject,
)
for (sha1, subject) in adds:
if sha1 in new_commits:
action = 'new'
else:
action = 'add'
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action=action,
rev_short=sha1, text=subject,
)
yield '\n'
if new_commits:
for line in self.generate_new_revision_summary(
len(new_commits), new_commits_list, push):
yield line
else:
for line in self.expand_lines(NO_NEW_REVISIONS_TEMPLATE):
yield line
for line in self.generate_revision_change_graph(push):
yield line
# The diffstat is shown from the old revision to the new
# revision. This is to show the truth of what happened in
# this change. There's no point showing the stat from the
# base to the new revision because the base is effectively a
# random revision at this point - the user will be interested
# in what this revision changed - including the undoing of
# previous revisions in the case of non-fast-forward updates.
yield '\n'
yield 'Summary of changes:\n'
for line in read_git_lines(
['diff-tree'] +
self.diffopts +
['%s..%s' % (self.old.commit_sha1, self.new.commit_sha1,)],
keepends=True,
):
yield line
elif self.old.commit_sha1 and not self.new.commit_sha1:
# A reference was deleted. List the revisions that were
# removed from the repository by this reference change.
sha1s = list(push.get_discarded_commits(self))
tot = len(sha1s)
discarded_revisions = [
Revision(self, GitObject(sha1), num=i + 1, tot=tot)
for (i, sha1) in enumerate(sha1s)
]
if discarded_revisions:
for line in self.expand_lines(DISCARDED_REVISIONS_TEMPLATE):
yield line
yield '\n'
for r in discarded_revisions:
(sha1, subject) = r.rev.get_summary()
yield r.expand(
BRIEF_SUMMARY_TEMPLATE, action='discard', text=subject,
)
for line in self.generate_revision_change_graph(push):
yield line
else:
for line in self.expand_lines(NO_DISCARDED_REVISIONS_TEMPLATE):
yield line
elif not self.old.commit_sha1 and not self.new.commit_sha1:
for line in self.expand_lines(NON_COMMIT_UPDATE_TEMPLATE):
yield line
def generate_create_summary(self, push):
"""Called for the creation of a reference."""
# This is a new reference and so oldrev is not valid
(sha1, subject) = self.new.get_summary()
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action='at',
rev_short=sha1, text=subject,
)
yield '\n'
def generate_update_summary(self, push):
"""Called for the change of a pre-existing branch."""
return iter([])
def generate_delete_summary(self, push):
"""Called for the deletion of any type of reference."""
(sha1, subject) = self.old.get_summary()
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action='was',
rev_short=sha1, text=subject,
)
yield '\n'
def get_specific_fromaddr(self):
return self.environment.from_refchange
class BranchChange(ReferenceChange):
refname_type = 'branch'
def __init__(self, environment, refname, short_refname, old, new, rev):
ReferenceChange.__init__(
self, environment,
refname=refname, short_refname=short_refname,
old=old, new=new, rev=rev,
)
self.recipients = environment.get_refchange_recipients(self)
self._single_revision = None
def send_single_combined_email(self, known_added_sha1s):
if not self.environment.combine_when_single_commit:
return None
# In the sadly-all-too-frequent usecase of people pushing only
# one of their commits at a time to a repository, users feel
# the reference change summary emails are noise rather than
# important signal. This is because, in this particular
# usecase, there is a reference change summary email for each
# new commit, and all these summaries do is point out that
# there is one new commit (which can readily be inferred by
# the existence of the individual revision email that is also
# sent). In such cases, our users prefer there to be a combined
# reference change summary/new revision email.
#
# So, if the change is an update and it doesn't discard any
# commits, and it adds exactly one non-merge commit (gerrit
# forces a workflow where every commit is individually merged
# and the git-multimail hook fired off for just this one
# change), then we send a combined refchange/revision email.
try:
# If this change is a reference update that doesn't discard
# any commits...
if self.change_type != 'update':
return None
if read_git_lines(
['merge-base', self.old.sha1, self.new.sha1]
) != [self.old.sha1]:
return None
# Check if this update introduced exactly one non-merge
# commit:
def split_line(line):
"""Split line into (sha1, [parent,...])."""
words = line.split()
return (words[0], words[1:])
# Get the new commits introduced by the push as a list of
# (sha1, [parent,...])
new_commits = [
split_line(line)
for line in read_git_lines(
[
'log', '-3', '--format=%H %P',
'%s..%s' % (self.old.sha1, self.new.sha1),
]
)
]
if not new_commits:
return None
# If the newest commit is a merge, save it for a later check
# but otherwise ignore it
merge = None
tot = len(new_commits)
if len(new_commits[0][1]) > 1:
merge = new_commits[0][0]
del new_commits[0]
# Our primary check: we can't combine if more than one commit
# is introduced. We also currently only combine if the new
# commit is a non-merge commit, though it may make sense to
# combine if it is a merge as well.
if not (
len(new_commits) == 1 and
len(new_commits[0][1]) == 1 and
new_commits[0][0] in known_added_sha1s
):
return None
# We do not want to combine revision and refchange emails if
# those go to separate locations.
rev = Revision(self, GitObject(new_commits[0][0]), 1, tot)
if rev.recipients != self.recipients:
return None
# We ignored the newest commit if it was just a merge of the one
# commit being introduced. But we don't want to ignore that
# merge commit it it involved conflict resolutions. Check that.
if merge and merge != read_git_output(['diff-tree', '--cc', merge]):
return None
# We can combine the refchange and one new revision emails
# into one. Return the Revision that a combined email should
# be sent about.
return rev
except CommandError:
# Cannot determine number of commits in old..new or new..old;
# don't combine reference/revision emails:
return None
def generate_combined_email(self, push, revision, body_filter=None, extra_header_values={}):
values = revision.get_values()
if extra_header_values:
values.update(extra_header_values)
if 'subject' not in extra_header_values:
values['subject'] = self.expand(COMBINED_REFCHANGE_REVISION_SUBJECT_TEMPLATE, **values)
self._single_revision = revision
self._contains_diff()
self.header_template = COMBINED_HEADER_TEMPLATE
self.intro_template = COMBINED_INTRO_TEMPLATE
self.footer_template = COMBINED_FOOTER_TEMPLATE
def revision_gen_link(base_url):
# revision is used only to generate the body, and
# _content_type is set while generating headers. Get it
# from the BranchChange object.
revision._content_type = self._content_type
return revision.generate_browse_link(base_url)
self.generate_browse_link = revision_gen_link
for line in self.generate_email(push, body_filter, values):
yield line
def generate_email_body(self, push):
'''Call the appropriate body generation routine.
If this is a combined refchange/revision email, the special logic
for handling this combined email comes from this function. For
other cases, we just use the normal handling.'''
# If self._single_revision isn't set; don't override
if not self._single_revision:
for line in super(BranchChange, self).generate_email_body(push):
yield line
return
# This is a combined refchange/revision email; we first provide
# some info from the refchange portion, and then call the revision
# generate_email_body function to handle the revision portion.
adds = list(generate_summaries(
'--topo-order', '--reverse', '%s..%s'
% (self.old.commit_sha1, self.new.commit_sha1,)
))
yield self.expand("The following commit(s) were added to %(refname)s by this push:\n")
for (sha1, subject) in adds:
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action='new',
rev_short=sha1, text=subject,
)
yield self._single_revision.rev.short + " is described below\n"
yield '\n'
for line in self._single_revision.generate_email_body(push):
yield line
class AnnotatedTagChange(ReferenceChange):
refname_type = 'annotated tag'
def __init__(self, environment, refname, short_refname, old, new, rev):
ReferenceChange.__init__(
self, environment,
refname=refname, short_refname=short_refname,
old=old, new=new, rev=rev,
)
self.recipients = environment.get_announce_recipients(self)
self.show_shortlog = environment.announce_show_shortlog
ANNOTATED_TAG_FORMAT = (
'%(*objectname)\n'
'%(*objecttype)\n'
'%(taggername)\n'
'%(taggerdate)'
)
def describe_tag(self, push):
"""Describe the new value of an annotated tag."""
# Use git for-each-ref to pull out the individual fields from
# the tag
[tagobject, tagtype, tagger, tagged] = read_git_lines(
['for-each-ref', '--format=%s' % (self.ANNOTATED_TAG_FORMAT,), self.refname],
)
yield self.expand(
BRIEF_SUMMARY_TEMPLATE, action='tagging',
rev_short=tagobject, text='(%s)' % (tagtype,),
)
if tagtype == 'commit':
# If the tagged object is a commit, then we assume this is a
# release, and so we calculate which tag this tag is
# replacing
try:
prevtag = read_git_output(['describe', '--abbrev=0', '%s^' % (self.new,)])
except CommandError:
prevtag = None
if prevtag:
yield ' replaces %s\n' % (prevtag,)
else:
prevtag = None
yield ' length %s bytes\n' % (read_git_output(['cat-file', '-s', tagobject]),)
yield ' by %s\n' % (tagger,)
yield ' on %s\n' % (tagged,)
yield '\n'
# Show the content of the tag message; this might contain a
# change log or release notes so is worth displaying.
yield LOGBEGIN
contents = list(read_git_lines(['cat-file', 'tag', self.new.sha1], keepends=True))
contents = contents[contents.index('\n') + 1:]
if contents and contents[-1][-1:] != '\n':
contents.append('\n')
for line in contents:
yield line
if self.show_shortlog and tagtype == 'commit':
# Only commit tags make sense to have rev-list operations
# performed on them
yield '\n'
if prevtag:
# Show changes since the previous release
revlist = read_git_output(
['rev-list', '--pretty=short', '%s..%s' % (prevtag, self.new,)],
keepends=True,
)
else:
# No previous tag, show all the changes since time
# began
revlist = read_git_output(
['rev-list', '--pr