Re: [Teem-users] unu minmax return value

[James B. <bi...@cs...>]

Gordon Kindlmann wrote:
> Are there other unu commands that do return 1 for the sorts of  
> problems that you're referring to?

There are lots of return 1's in the code.  Do a grep in the unrrdu directory. 
Here's an example of what happens when you try to save a file.

#define SAVE(outS, nout, io) \
   if (nrrdSave((outS), (nout), (io))) { \
     airMopAdd(mop, err = biffGetDone(NRRD), airFree, airMopAlways); \
     fprintf(stderr, "%s: error saving nrrd to \"%s\":\n%s\n", me, (outS), err); \
     airMopError(mop); \
     return 1; \
   }

> What kinds of problems do you mean?

[1028] spheredata $ unu minmax spheredata496.crop.nhdr
unu minmax: trouble with "spheredata496.crop.nhdr":
[unu minmax] unu minmax: trouble loading "spheredata496.crop.nhdr"
[unu minmax] [nrrd] nrrdLoad: trouble reading "spheredata496.crop.nhdr"
[unu minmax] [nrrd] nrrdRead: trouble
[unu minmax] [nrrd] _nrrdRead: immediately hit EOF

[bigler@hex /scratch/bigler/e2e3d/alc/spheredata]
[1029] spheredata $ echo $?
0

I think if you try load a file that is incomplete you get problems (though 
without error messages).

[1061] spheredata $ unu resample -i spheredata496.crop.nhdr -s = x1 -o test.nrrd

[1062] spheredata $ echo $?
1

This is disturbing.  No error message saying that spheredata496.crop.nhdr 
couldn't be read fully, but the error code is there.  Strange.

James

> On Aug 8, 2007, at 12:48 PM, James Bigler wrote:
> 
>> When you run "unu minmax" and there are problems it doesn't return  
>> 1 to the
>> shell.  It always returns 0.
>>
>> Shouldn't it return 1 if there was any problems?
>>
>> James
>>
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