Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #21400

Re: Finding MIME type for a data stream

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.mixmin.net!newsreader4.netcologne.de!news.netcologne.de!newsfeed.freenet.ag!news2.euro.net!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <d@davea.name>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.105
X-Spam-Level *
X-Spam-Evidence '*H*': 0.79; '*S*': 0.00; 'failing': 0.09; 'binary': 0.13; 'thanks!': 0.14; '"file"': 0.16; 'received:192.168.1.104': 0.16; 'cc:addr:python-list': 0.16; 'linux': 0.17; 'wrote:': 0.18; 'seems': 0.20; 'cc:no real name:2**0': 0.21; 'detect': 0.21; 'file,': 0.21; 'header:In-Reply-To:1': 0.22; 'sfxlen:0': 0.23; 'subject:data': 0.25; 'cc:2**0': 0.26; 'looks': 0.27; "i'm": 0.28; 'cc:addr:python.org': 0.29; 'correct': 0.29; 'pm,': 0.29; 'far,': 0.30; 'header,': 0.30; "i've": 0.32; 'does': 0.32; 'that,': 0.32; 'yet': 0.32; "can't": 0.33; 'header:User-Agent:1': 0.33; 'it.': 0.33; 'file': 0.34; '(not': 0.35; 'data.': 0.36; 'run': 0.37; 'but': 0.37; 'happens': 0.38; 'not,': 0.38; 'received:192': 0.38; 'authors': 0.38; 'format': 0.38; 'data': 0.38; 'open': 0.38; 'received:192.168.1': 0.39; 'data,': 0.39; 'application': 0.40; 'might': 0.40; 'course,': 0.62; 'browser': 0.62; 'afraid': 0.63; 'serving': 0.68; 'header:Reply-To:1': 0.70; 'reply-to:no real name:2**0': 0.72; 'database.': 0.74; 'blob': 0.84; 'subject:stream': 0.84; 'locally': 0.91; 'step,': 0.93
Date Thu, 08 Mar 2012 17:11:26 -0500
From Dave Angel <d@davea.name>
User-Agent Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.27) Gecko/20120216 Thunderbird/3.1.19
MIME-Version 1.0
To Tobiah <toby@tobiah.org>
Subject Re: Finding MIME type for a data stream
References <%U96r.32867$082.25394@newsfe04.iad>
In-Reply-To <%U96r.32867$082.25394@newsfe04.iad>
Content-Type text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding 7bit
X-Provags-ID V02:K0:3RVtOOOTs2ktpgFf3ySq6xls0SUM+kUv/fYiK+14soW 3QPNNINJ2LVEQhCaZLS9/gihApgRo9ucQ21hC6EMmxW/YtmBsM 1EX15CxGmxXEUudg/CU8ogY5aJMylfRF4OFBd6imiGQavYXHzA pagHWYb23gjnlS0IMPyJ9EPSLq9czV3w3F+/foAGTEbVE/cqEF jNXWvFKWiG6bw0EjJUGnOPkKimgIxcGscXURvOyiaOy5+FYPT6 h0Jxb8P8G2MnJOwpwswkJWj4HCXoD/EuMFnFLIkRzp0hfGbzAj Qc+KHr8WtOiACsLsT56cTInWYOucrUq6xFcFrqFD4MCLVnQGw= =
Cc python-list@python.org
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.12
Precedence list
Reply-To d@davea.name
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.518.1331244722.3037.python-list@python.org> (permalink)
Lines 35
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1331244722 news.xs4all.nl 6975 [2001:888:2000:d::a6]:43619
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:21400

Show key headers only | View raw

On 03/08/2012 04:55 PM, Tobiah wrote:
> I'm pulling image data from a database blob, and serving
> it from a web2py app.  I have to send the correct
> Content-Type header, so I need to detect the image type.
>
> Everything that I've found on the web so far, needs a file
> name on the disk, but I only have the data.
>
> It looks like the 'magic' package might be of use, but
> I can't find any documentation for it.
>
> Also, it seems like image/png works for other types
> of image data, while image/foo does not, yet I'm afraid
> that not every browser will play along as nicely.
>
> Thanks!
>
> Tobiah

First step, ask the authors of the database what format of data this 
blob is in.

Failing that, write the same data locally as a binary file, and see what 
application can open it.  Or if you're on a Linux system, run file on 
it.  "file" can identify most data formats (not just images) just by 
looking at the data.

That assumes, of course, that there's any consistency in the data coming 
out of the database.  What happens if next time this blob is an Excel 
spreadsheet?

-- 

DaveA

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-08 13:55 -0800
  Re: Finding MIME type for a data stream Dave Angel <d@davea.name> - 2012-03-08 17:11 -0500
    Re: Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-08 14:28 -0800
      Re: Finding MIME type for a data stream Dave Angel <d@davea.name> - 2012-03-08 17:56 -0500
        Re: Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-08 15:40 -0800
          Re: Finding MIME type for a data stream Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-03-08 21:04 -0500
            Re: Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-09 08:40 -0800
          Re: Finding MIME type for a data stream Jon Clements <joncle@googlemail.com> - 2012-03-08 18:31 -0800
            Re: Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-09 09:53 -0800
    Re: Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-08 14:34 -0800
      Re: Finding MIME type for a data stream Irmen de Jong <irmen.NOSPAM@xs4all.nl> - 2012-03-09 03:12 +0100
        Re: Finding MIME type for a data stream Tobiah <toby@tobiah.org> - 2012-03-09 08:35 -0800
  Re: Finding MIME type for a data stream Peter Otten <__peter__@web.de> - 2012-03-09 11:50 +0100

csiph-web