notmuch/devel/nmbug/nmbug-status
W. Trevor King 98cb4779c0 nmbug-status: Add Page and HtmlPage for modular rendering
I was having trouble understanding the logic of the longish print_view
function, so I refactored the output generation into modular bits.
The basic text rendering is handled by Page, which has enough hooks
that HtmlPage can borrow the logic and slot-in HTML generators.

By modularizing the logic it should also be easier to build other
renderers if folks want to customize the layout for other projects.

Timezones
=========

This commit has not effect on the output, except that some dates have
been converted from the sender's timezone to UTC due to:

  -            val = m.get_header(header)
  -            ...
  -            if header == 'date':
  -                val = str.join(' ', val.split(None)[1:4])
  -                val = str(datetime.datetime.strptime(val, '%d %b %Y').date())
  ...
  +                value = str(datetime.datetime.utcfromtimestamp(
  +                    message.get_date()).date())

I also tweaked the HTML header date to be utcnow instead of the local
now() to make all times independent of the generator's local time.
This matches Gmane, which converts all Date headers to UTC (although
they use a 'GMT' suffix).  Notmuch uses
g_mime_utils_header_decode_date to calculate the UTC timestamps, but
uses a NULL tz_offset which drops the information we'd need to get
back to the sender's local time [1].  With the generator's local time
arbitrarily different from the sender's and viewer's local time,
sticking with UTC seems the best bet.

[1]: https://developer.gnome.org/gmime/stable/gmime-gmime-utils.html#g-mime-utils-header-decode-date
2014-02-10 22:51:03 -04:00

260 lines
8.6 KiB
Python
Executable file

#!/usr/bin/python
#
# Copyright (c) 2011-2012 David Bremner <david@tethera.net>
# License: Same as notmuch
# dependencies
# - python 2.6 for json
# - argparse; either python 2.7, or install separately
# - collections.OrderedDict; python 2.7
from __future__ import print_function
from __future__ import unicode_literals
import codecs
import collections
import datetime
import email.utils
import locale
try: # Python 3
from urllib.parse import quote
except ImportError: # Python 2
from urllib import quote
import json
import argparse
import os
import sys
import subprocess
_ENCODING = locale.getpreferredencoding() or sys.getdefaultencoding()
_PAGES = {}
def read_config(path=None, encoding=None):
"Read config from json file"
if not encoding:
encoding = _ENCODING
if path:
fp = open(path)
else:
nmbhome = os.getenv('NMBGIT', os.path.expanduser('~/.nmbug'))
# read only the first line from the pipe
sha1_bytes = subprocess.Popen(
['git', '--git-dir', nmbhome, 'show-ref', '-s', 'config'],
stdout=subprocess.PIPE).stdout.readline()
sha1 = sha1_bytes.decode(encoding).rstrip()
fp_byte_stream = subprocess.Popen(
['git', '--git-dir', nmbhome, 'cat-file', 'blob',
sha1+':status-config.json'],
stdout=subprocess.PIPE).stdout
fp = codecs.getreader(encoding=encoding)(stream=fp_byte_stream)
return json.load(fp)
class Thread (list):
def __init__(self):
self.running_data = {}
class Page (object):
def __init__(self, header=None, footer=None):
self.header = header
self.footer = footer
def write(self, database, views, stream=None):
if not stream:
try: # Python 3
byte_stream = sys.stdout.buffer
except AttributeError: # Python 2
byte_stream = sys.stdout
stream = codecs.getwriter(encoding='UTF-8')(stream=byte_stream)
self._write_header(views=views, stream=stream)
for view in views:
self._write_view(database=database, view=view, stream=stream)
self._write_footer(views=views, stream=stream)
def _write_header(self, views, stream):
if self.header:
stream.write(self.header)
def _write_footer(self, views, stream):
if self.footer:
stream.write(self.footer)
def _write_view(self, database, view, stream):
if 'query-string' not in view:
query = view['query']
view['query-string'] = ' and '.join(query)
q = notmuch.Query(database, view['query-string'])
q.set_sort(notmuch.Query.SORT.OLDEST_FIRST)
threads = self._get_threads(messages=q.search_messages())
self._write_view_header(view=view, stream=stream)
self._write_threads(threads=threads, stream=stream)
def _get_threads(self, messages):
threads = collections.OrderedDict()
for message in messages:
thread_id = message.get_thread_id()
if thread_id in threads:
thread = threads[thread_id]
else:
thread = Thread()
threads[thread_id] = thread
thread.running_data, display_data = self._message_display_data(
running_data=thread.running_data, message=message)
thread.append(display_data)
return list(threads.values())
def _write_view_header(self, view, stream):
pass
def _write_threads(self, threads, stream):
for thread in threads:
for message_display_data in thread:
stream.write(
('{date:10.10s} {from:20.20s} {subject:40.40s}\n'
'{message-id-term:>72}\n'
).format(**message_display_data))
if thread != threads[-1]:
stream.write('\n')
def _message_display_data(self, running_data, message):
headers = ('thread-id', 'message-id', 'date', 'from', 'subject')
data = {}
for header in headers:
if header == 'thread-id':
value = message.get_thread_id()
elif header == 'message-id':
value = message.get_message_id()
data['message-id-term'] = 'id:"{0}"'.format(value)
elif header == 'date':
value = str(datetime.datetime.utcfromtimestamp(
message.get_date()).date())
else:
value = message.get_header(header)
if header == 'from':
(value, addr) = email.utils.parseaddr(value)
if not value:
value = addr.split('@')[0]
data[header] = value
next_running_data = data.copy()
for header, value in data.items():
if header in ['message-id', 'subject']:
continue
if value == running_data.get(header, None):
data[header] = ''
return (next_running_data, data)
class HtmlPage (Page):
def _write_header(self, views, stream):
super(HtmlPage, self)._write_header(views=views, stream=stream)
stream.write('<ul>\n')
for view in views:
stream.write(
'<li><a href="#{title}">{title}</a></li>\n'.format(**view))
stream.write('</ul>\n')
def _write_view_header(self, view, stream):
stream.write('<h3><a name="{title}" />{title}</h3>\n'.format(**view))
if 'comment' in view:
stream.write(view['comment'])
stream.write('\n')
for line in [
'The view is generated from the following query:',
'<blockquote>',
view['query-string'],
'</blockquote>',
]:
stream.write(line)
stream.write('\n')
def _write_threads(self, threads, stream):
if not threads:
return
stream.write('<table>\n')
for thread in threads:
for message_display_data in thread:
stream.write((
'<tr><td>{date}\n'
'</td><td>{message-id-term}\n'
'</td></tr>\n'
'<tr><td>{from}\n'
'</td><td>{subject}\n'
'</td></tr>\n'
).format(**message_display_data))
if thread != threads[-1]:
stream.write('<tr><td colspan="2"><br /></td></tr>\n')
stream.write('</table>\n')
def _message_display_data(self, *args, **kwargs):
running_data, display_data = super(
HtmlPage, self)._message_display_data(
*args, **kwargs)
if 'subject' in display_data and 'message-id' in display_data:
d = {
'message-id': quote(display_data['message-id']),
'subject': display_data['subject'],
}
display_data['subject'] = (
'<a href="http://mid.gmane.org/{message-id}">{subject}</a>'
).format(**d)
return (running_data, display_data)
_PAGES['text'] = Page()
_PAGES['html'] = HtmlPage(
header='''<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Notmuch Patches</title>
</head>
<body>
<h2>Notmuch Patches</h2>
Generated: {date}<br />
For more infomation see <a href="http://notmuchmail.org/nmbug">nmbug</a>
<h3>Views</h3>
'''.format(date=datetime.datetime.utcnow().date()),
footer='</body>\n</html>\n',
)
parser = argparse.ArgumentParser()
parser.add_argument('--text', help='output plain text format',
action='store_true')
parser.add_argument('--config', help='load config from given file',
metavar='PATH')
parser.add_argument('--list-views', help='list views',
action='store_true')
parser.add_argument('--get-query', help='get query for view',
metavar='VIEW')
args = parser.parse_args()
config = read_config(path=args.config)
if args.list_views:
for view in config['views']:
print(view['title'])
sys.exit(0)
elif args.get_query != None:
for view in config['views']:
if args.get_query == view['title']:
print(' and '.join(view['query']))
sys.exit(0)
else:
# only import notmuch if needed
import notmuch
if args.text:
page = _PAGES['text']
else:
page = _PAGES['html']
db = notmuch.Database(mode=notmuch.Database.MODE.READ_ONLY)
page.write(database=db, views=config['views'])