[Mapit] WG: NT, IIS and png

[Anja Kipfer]

Hi Bernhard,

here's the description of the problem installing Mapit on IIS 4.0. The SIG 
"image-sig at python.org" is actually a good place to get some assistance for 
PIL issues.

I had written "c:\Program Files\Python\python.exe -u %s %s" in the Registry 
and thought this is okay but when I looked under HomeDirectory -> 
Configuration the "u" was missing.

Everything just work fine now...

Regards, Anja


-----Ursprüngliche Nachricht-----
Von:	Clover Andrew [SMTP:aclover at 1value.com]
Gesendet am:	Donnerstag, 10. Mai 2001 18:37
An:	image-sig at python.org
Betreff:	Re: [Image-SIG] NT, IIS and png

Anja Kipfer <kipfer at logiball.de> wrote:

> Do I need a certain environment-variable or similar to be
> able to write in sys.stdout?

No, the problem is most likely that you're not writing to
stdout as a binary file. LFs are probably being changed into
CRLFs, making the file invalid.

Check your IIS Python-script-handler in 'Home directory->
Configuration' - if I remember correctly, you need the '-u'
switch to get a binary stdout, so the command should probably
be something like

  X:\Program Files\Python\python.exe -u "%s" "%s"

Does that fix it?


-----Ursprüngliche Nachricht-----
Von:	Anja Kipfer [SMTP:kipfer at logiball.de]
Gesendet am:	Donnerstag, 10. Mai 2001 15:20
An:	'image-sig at python.org'
Betreff:	NT, IIS and png

Hiya,

there's a problem with displaying png-data when the script runs in IIS 4.0 
on NT. Using Apache on NT the same code /png-files just work fine!

The error occurs a follows:

Image.save is called: apply(image.save, (sys.stdout, format), params)
this calls PngImagePlugin._save(im, fp, filename, chunk=putchunk, check=0)
this calls ImageFile._save(...)
Here, the script crashes at line fh=fp.fileno(), whereby fp is the 
passed-through parameter sys.stdout

If I call image.save with a filename instead, a correct png-file gets 
created - but I have it in the file system and not on the screen where I 
want it to be! Do I need a certain environment-variable or similar to be 
able to write in sys.stdout? Does anyone have an idea of how to solve that 
problem???

With many thanks in advance, Anja