On 27-Aug-2010, at 1:32 AM, Dave Angel wrote:
> Navkirat Singh wrote:
>> Hey guys,
>>
>> I am programming a webserver, I receive a jpeg file with the POST method.The
>> file (.jpeg) is encoded in bytes, I parse the bytes by decoding them to a
>> string. I wanted to know how i could write the file (now a string) as a jpeg
>> image on disk. When I try to encode the same string to a bytes and write
>> them in binary format to disk, the file is not recognized as jpeg. I would
>> be grateful if someone could help me with this.
>>
>>
>> Regards,
>> Nav
> If by "decoding them to a string" you mean converting to Unicode, then you've
> already trashed the data. That's only valid if the bytes had been encoded
> from valid Unicode characters, and then only if you use the corresponding
> decoding technique.
>
> If you mean some other decoding, then the question is meaningless without
> telling us just what the decoding is, preferably with some code.
>
> It also might be useful to know what version of Python you're using, when you
> post the code.
>
> DaveA
>
Dave,
I am using Python3 and I receive a byte stream with a jpeg attached sent by the
web browser over a socket, which looks like this:
b': image/jpeg\r\nAccept: text/*\r\nReferer:
http://127.0.0.1:8001/\r\nAccept-Language: en-us\r\nAccept-Encoding: gzip,
deflate\r\nContent-Length: 91783\r\nConnection:
keep-alive\r\n\r\n\xff\xd8\xff\xe0\x00\x10JFIF\x00\x01\x01\x00\x00\x01\x00\x01\x00\x00\xff\xdb\x00\x84\x00\x03\x02\x02\x03\x02\x02\x03\x03\x03\x03\x04\x03\x03\x04\x05\x08\x05\x05\x04\x04\x05\n\x07\x07\x06\x08\x0c\n\x0c\x0c\x0b\n\x0b\x0b\r\x0e\x12\x10\r\x0e\x11\x0e\x0b\x0b\x10\x16\x10\x11\x13\x14\x15\x15\x15\x0c\x0f
From the above, I need to:
a) Split the header content from the image content, which comes after the
keep-alive\r\n\r\n part
b) Then write the image content to file for further use as a jpeg.
Nav
--
http://mail.python.org/mailman/listinfo/python-list
