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# Copyright (C) 2011-2018 Patrick Totzke <patricktotzke@gmail.com>
# This file is released under the GNU GPL, version 3 or a later revision.
# For further details see the COPYING file
import urwid
import os
from .buffer import Buffer
from ..settings.const import settings
from ..widgets.globals import HeadersList
from ..widgets.globals import AttachmentWidget
from ..helper import shorten_author_string
def string_sanitize(string, tab_width=8):
r"""
strips, and replaces non-printable characters
:param tab_width: number of spaces to replace tabs with. Read from
`globals.tabwidth` setting if `None`
:type tab_width: int or `None`
>>> string_sanitize(' foo\rbar ', 8)
' foobar '
>>> string_sanitize('foo\tbar', 8)
'foo bar'
>>> string_sanitize('foo\t\tbar', 8)
'foo bar'
"""
string = string.replace('\r', '')
lines = list()
for line in string.split('\n'):
tab_count = line.count('\t')
if tab_count > 0:
line_length = 0
new_line = list()
for i, chunk in enumerate(line.split('\t')):
line_length += len(chunk)
new_line.append(chunk)
if i < tab_count:
next_tab_stop_in = tab_width - (line_length % tab_width)
new_line.append(' ' * next_tab_stop_in)
line_length += next_tab_stop_in
lines.append(''.join(new_line))
else:
lines.append(line)
return '\n'.join(lines)
class EnvelopeBuffer(Buffer):
"""message composition mode"""
modename = 'envelope'
def __init__(self, envelope):
self.envelope = envelope
self.all_headers = False
self.rebuild()
super().__init__()
def __str__(self):
to = self.envelope.get('To', fallback='unset')
return '[envelope] to: %s' % (shorten_author_string(to, 400))
async def get_info(self):
info = {}
info['to'] = self.envelope.get('To', fallback='unset')
return info
def cleanup(self):
if self.envelope.tmpfile:
os.unlink(self.envelope.tmpfile.name)
def rebuild(self):
displayed_widgets = []
hidden = settings.get('envelope_headers_blacklist')
# build lines
lines = []
for (k, vlist) in self.envelope.headers.items():
if (k not in hidden) or self.all_headers:
for value in vlist:
lines.append((k, value))
# sign/encrypt lines
if self.envelope.sign:
description = 'Yes'
sign_key = self.envelope.sign_key
if sign_key is not None and len(sign_key.subkeys) > 0:
description += ', with key ' + sign_key.uids[0].uid
lines.append(('GPG sign', description))
if self.envelope.encrypt:
description = 'Yes'
encrypt_keys = self.envelope.encrypt_keys.values()
if len(encrypt_keys) == 1:
description += ', with key '
elif len(encrypt_keys) > 1:
description += ', with keys '
key_ids = []
for key in encrypt_keys:
if key is not None and key.subkeys:
key_ids.append(key.uids[0].uid)
description += ', '.join(key_ids)
lines.append(('GPG encrypt', description))
if self.envelope.tags:
lines.append(('Tags', ','.join(self.envelope.tags)))
# add header list widget iff header values exists
if lines:
key_att = settings.get_theming_attribute('envelope', 'header_key')
value_att = settings.get_theming_attribute('envelope',
'header_value')
gaps_att = settings.get_theming_attribute('envelope', 'header')
self.header_wgt = HeadersList(lines, key_att, value_att, gaps_att)
displayed_widgets.append(self.header_wgt)
# display attachments
lines = []
for a in self.envelope.attachments:
lines.append(AttachmentWidget(a, selectable=False))
if lines:
self.attachment_wgt = urwid.Pile(lines)
displayed_widgets.append(self.attachment_wgt)
self.body_wgt = urwid.Text(string_sanitize(self.envelope.body))
displayed_widgets.append(self.body_wgt)
self.body = urwid.ListBox(displayed_widgets)
def toggle_all_headers(self):
"""toggles visibility of all envelope headers"""
self.all_headers = not self.all_headers
self.rebuild()
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