| 1 | """Various tools used by MIME-reading or MIME-writing programs."""
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| 2 |
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| 3 |
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| 4 | import os
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| 5 | import rfc822
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| 6 | import tempfile
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| 7 |
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| 8 | __all__ = ["Message","choose_boundary","encode","decode","copyliteral",
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| 9 | "copybinary"]
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| 10 |
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| 11 | class Message(rfc822.Message):
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| 12 | """A derived class of rfc822.Message that knows about MIME headers and
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| 13 | contains some hooks for decoding encoded and multipart messages."""
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| 14 |
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| 15 | def __init__(self, fp, seekable = 1):
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| 16 | rfc822.Message.__init__(self, fp, seekable)
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| 17 | self.encodingheader = \
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| 18 | self.getheader('content-transfer-encoding')
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| 19 | self.typeheader = \
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| 20 | self.getheader('content-type')
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| 21 | self.parsetype()
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| 22 | self.parseplist()
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| 23 |
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| 24 | def parsetype(self):
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| 25 | str = self.typeheader
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| 26 | if str is None:
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| 27 | str = 'text/plain'
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| 28 | if ';' in str:
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| 29 | i = str.index(';')
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| 30 | self.plisttext = str[i:]
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| 31 | str = str[:i]
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| 32 | else:
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| 33 | self.plisttext = ''
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| 34 | fields = str.split('/')
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| 35 | for i in range(len(fields)):
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| 36 | fields[i] = fields[i].strip().lower()
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| 37 | self.type = '/'.join(fields)
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| 38 | self.maintype = fields[0]
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| 39 | self.subtype = '/'.join(fields[1:])
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| 40 |
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| 41 | def parseplist(self):
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| 42 | str = self.plisttext
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| 43 | self.plist = []
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| 44 | while str[:1] == ';':
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| 45 | str = str[1:]
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| 46 | if ';' in str:
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| 47 | # XXX Should parse quotes!
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| 48 | end = str.index(';')
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| 49 | else:
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| 50 | end = len(str)
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| 51 | f = str[:end]
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| 52 | if '=' in f:
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