Probelem about image size and dimensions

[gongcheng_g@hotmail.com]

I got a piece of python script to upload file and it can upload it to
different folders on server depend on the type of file is image or not.
but I also want to restrict the size and dimensions of file if it is a
image file.Could anyone help me out?


Parameter List:id, file, title='',folder

REQUEST=context .REQUEST
content_type=fi le.headers['Content-Type']
if content_type.fi nd('image')!=-1: #.find() is a method in Python2.0<


destination=con text.restricted Traverse('/cheng/rvdpas/uploadImage/'+folder)
destination.man age_addImage(id , file, title)\


else:

destination=con text.restricted Traverse('/cheng/rvdpas/uploadDocument/'+folder)
destination.man age_addFile(id, file, title)


return 'Finished'

[Diez B. Roggisch]

Re: Probelem about image size and dimensions

gongcheng_g@hot mail.com wrote:
[color=blue]
> I got a piece of python script to upload file and it can upload it to
> different folders on server depend on the type of file is image or not.
> but I also want to restrict the size and dimensions of file if it is a
> image file.Could anyone help me out?[/color]


Use PIL, the python imaging library. Load your image, check its sizes and
proceed accordingly.

Diez

[ChengGong]

Re: Probelem about image size and dimensions

Thank you for your reply. I have been learning python only 2 weeks.
According what u said. I tried to import Image but there 's an error
on the server.
here is the message
Error Type: ImportError
Error Value: import of "Image" is unauthorized

[Diez B. Roggisch]

Re: Probelem about image size and dimensions

ChengGong wrote:
[color=blue]
> Thank you for your reply. I have been learning python only 2 weeks.
> According what u said. I tried to import Image but there 's an error
> on the server.
> here is the message
> Error Type: ImportError
> Error Value: import of "Image" is unauthorized[/color]

Are you by chance running under ZOPE? Then you'll need a so-called
ExternalMethod for your code to import restricted modules.

Diez

[ChengGong]

Re: Probelem about image size and dimensions

Diez,

I asked the administrator that they won't allow me to import Image and
PIL in Zope.
I am wondering that how can I get the height and width and the size of
the image in this situation?
Can I just use <dtml>to get Image's addtributs?

Cheng

[Diez B. Roggisch]

Re: Probelem about image size and dimensions

ChengGong wrote:
[color=blue]
> Diez,
>
> I asked the administrator that they won't allow me to import Image and
> PIL in Zope.
> I am wondering that how can I get the height and width and the size of
> the image in this situation?
> Can I just use <dtml>to get Image's addtributs?[/color]

No. At least not easily. You'd have to write the whole image-header loading
yourself. Which is certainly more than a two-week-old python coder is
capable of.

If I were you I'd pester your sysadmins to allow you to create an external
method - after all it is _their_ job to make you happy as a developer -
IMHO.

Diez

[ChengGong]

Re: Probelem about image size and dimensions

Hi Diez,

They do not allow me to do what u said above.
so I do not have any idea what is supposed to do.
however i am think that if I can get the id of the image, i have chance
to modify it.
This is what i programed but it is an empty page, I but it in images
folder
<dtml-var standard_html_h eader>

<h1>File Library</h1>

<table>
<tr>
<th><a href="&dtml-URL0;?sort=name ">File</a></th>
<th><a href="&dtml-URL0;?sort=date ">Last Modified</a></th>
</tr>

<dtml-if expr="_.has_key ('sort') and sort=='date'">
<dtml-in expr="objectVal ues(['Image'])"
sort="bobobase_ modification_ti me" reverse>
<tr>
<td><a href="&dtml-absolute_url;"> <dtml-var
title_or_id></a></td>
<td><dtml-var bobobase_modifi cation_time fmt="aCommon">< td>
</tr>
</dtml-in>
<dtml-else>
<dtml-in expr="objectVal ues(['Image'])" sort="id">
<tr>
<td><a href="&dtml-absolute_url;"> <dtml-var
title_or_id></a></td>
<td><dtml-var bobobase_modifi cation_time fmt="aCommon">< td>
</tr>
</dtml-in>
</dtml-if>

</table>

<dtml-var standard_html_f ooter>

is there any mistake?
How ever thank you alot Diez. Your comments and suggestion are helpful.

P.S. i am doing my internship in a commercial company:(, create
external method is not allowed in my situation

Cheng

[ChengGong]

Re: Probelem about image size and dimensions

Is that because I can not import PIL ? then i can not use codes above
to show all image id?

[dwelch]

Re: Probelem about image size and dimensions

gongcheng_g@hot mail.com wrote:[color=blue]
> I got a piece of python script to upload file and it can upload it to
> different folders on server depend on the type of file is image or not.
> but I also want to restrict the size and dimensions of file if it is a
> image file.Could anyone help me out?
>
>
> Parameter List:id, file, title='',folder
>
> REQUEST=context .REQUEST
> content_type=fi le.headers['Content-Type']
> if content_type.fi nd('image')!=-1: #.find() is a method in Python2.0<
>
>
> destination=con text.restricted Traverse('/cheng/rvdpas/uploadImage/'+folder)
> destination.man age_addImage(id , file, title)\
>
>
> else:
>
> destination=con text.restricted Traverse('/cheng/rvdpas/uploadDocument/'+folder)
> destination.man age_addFile(id, file, title)
>
>
> return 'Finished'
>[/color]

You could try this to get the image dimensions:

http://www.python.org/pypi?%3Aaction=search&name=ImageSize&version=&summary=&description=&keywords=&_pypi_hidden=0

-Don