gpg-lacre/lacre/text.py

36 lines
1.1 KiB
Python

import sys
import re
# The standard way to encode line-ending in email:
EOL = "\r\n"
PGP_INLINE_BEGIN = b"-----BEGIN PGP MESSAGE-----"
PGP_INLINE_END = b"-----END PGP MESSAGE-----"
def parse_content_type(content_type):
parts = [p.strip() for p in content_type.split(';')]
if len(parts) == 1:
# No additional attributes provided. Use default encoding.
return (content_type, sys.getdefaultencoding())
# At least one attribute provided. Find out if any of them is named
# 'charset' and if so, use it.
ctype = parts[0]
encoding = [p for p in parts[1:] if p.startswith('charset=') ]
if encoding:
eq_idx = encoding[0].index('=')
return (ctype, encoding[0][eq_idx+1:])
else:
return (ctype, sys.getdefaultencoding())
def parse_delimiter(address):
withdelim = re.match('^([^\+]+)\+([^@]+)@(.*)$', address)
if withdelim:
return (withdelim.group(1) + '@' + withdelim.group(3), withdelim.group(2))
else:
return (address, None)
def is_pgp_inline(payload):
"""Finds out if the payload (bytes) contains PGP/INLINE markers."""
return PGP_INLINE_BEGIN in payload and PGP_INLINE_END in payload