Bugs item #1721862, was opened at 2007-05-19 11:06
Message generated for change (Comment added) made by syeberman
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Sye van der Veen (syeberman)
Assigned to: Nobody/Anonymous (nobody)
Summary: email.FeedParser.BufferedSubFile improperly handles "\r\n"
Initial Comment:
When email.FeedParser.BufferedSubFile sees "\r" at the end of the pushed-in
data, it assumes that it is a Macintosh-style line terminator. Instead, it
should request more data, to ensure that the next character is not "\n", which
would make it a Windows-style line terminator. This affects
email.message_from_file, which reads in the data in 8192 byte chunks. The
following code demonstrates this:
====================================
from StringIO import StringIO
from email.FeedParser import \
BufferedSubFile, NeedMoreData
fp = StringIO( "1\r\n10\r\n100\r\n"
"1000\r\n10000\r\n" )
bsf = BufferedSubFile( )
while True:
data = fp.read( 3 )
if not data:
break
bsf.push( data )
for line in bsf:
if line is NeedMoreData:
break
print repr( line )
bsf.close()
====================================
The output is:
====================================
'1\r\n'
'10\r'
'\n'
'100\r\n'
'1000\r\n'
'10000\r'
'\n'
====================================
----------------------------------------------------------------------
>Comment By: Sye van der Veen (syeberman)
Date: 2007-05-19 11:09
Message:
Logged In: YES
user_id=982447
Originator: YES
File Added: BufferedSubFileBug.py
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1721862&group_id=5470
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