Check write access of directory before stitching

[nobody]

was trying to do a panorama of pictures in a directory to which I have no write access. Instead of giving something like "please check your permissions" the following error came up together with a notice telling me to report it:

nona -z PACKBITS -r ldr -m TIFF_m -o map -i 0 /tmp/huginpto_izlwvT
nona -z PACKBITS -r ldr -m TIFF_m -o map -i 1 /tmp/huginpto_izlwvT
TIFFOpen: map0000.tif: Cannot open.
ContractViolation:
Precondition violation!
Unable to open file 'map0000.tif'.
(/build/buildd/hugin-0.7.0/src/foreign/vigra/vigra_impex/tiff.cxx:711)

Precondition violation!
Unable to open file 'map0000.tif'.
(/build/buildd/hugin-0.7.0/src/foreign/vigra/vigra_impex/tiff.cxx:711)
enblend --compression 100 -w -f290x145 -o map.jpg map0000.tif map0001.tif
TIFFOpen: map0001.tif: Cannot open.
ContractViolation:
Precondition violation!
Unable to open file 'map0001.tif'.
(/build/buildd/hugin-0.7.0/src/foreign/vigra/vigra_impex/tiff.cxx:711)

Precondition violation!
Unable to open file 'map0001.tif'.
(/build/buildd/hugin-0.7.0/src/foreign/vigra/vigra_impex/tiff.cxx:711)

enblend: error opening input file "map0000.tif":

Precondition violation!
Unable to open file 'map0000.tif'.

make: *** [map.jpg] Error 1

[Seb Przd (sbprzd)]

Usually images are created in the folder where you run nona and enblend. Do you have write permissions in this folder?
Also, you seem to be using 0.7.0. Could you try with a recent SVN version? we are very close to 0.8.0.

[Yuv (yuv)]

I wonder if the currently assigned group (enblend) is the right one, or if the makefile should check for permission before triggering the tools?

[YunSheng.Meng (mengyunsheng)]

===========================================================================
*************** Panorama makefile generated by Hugin ***************
===========================================================================
System information
===========================================================================
Operating System: Windows XP (5.1 Service Pack 3)
Architecture: x86
Number of logical processors: 2
Physical memory: 1038700 kiB (68% occupied)
Free space on disc: 4825 MiB
Active codepage: 936
===========================================================================
Output options
===========================================================================
Hugin Version: 2011.0.0.0fd3e119979c built by Matthew Petroff
Project file: C:\DOCUME~1\NEWUSE~1\LOCALS~1\Temp\hug131.tmp
Output prefix: 974-1-975-1
Projection: Rectilinear (0)
Field of view: 80 x 33
Canvas dimensions: 3000 x 1050
Crop area: (0,0) - (3000,1050)
Output exposure value: 13.62
Selected outputs
Normal panorama
* Blended panorama
===========================================================================
Input images
===========================================================================
Number of images in project file: 2
Number of active images: 2
Image 0: C:\Documents and Settings\New user\Image 1: Size 800x600, Exposure: 13.71
===========================================================================
Testing programs
===========================================================================
Checking nona...
nona is ok
Checking enblend...
enblend is ok
Checking enfuse...
enfuse is ok
Checking hugin_hdrmerge...
hugin_hdrmerge is ok
Checking exiftool...
exiftool is ok
===========================================================================
Stitching panorama
===========================================================================
"C:/Program Files/Hugin/bin/nona" -z LZW -r ldr -m TIFF_m -o "974-1-975-1" -i 0 "C:/DOCUME~1/NEWUSE~1/LOCALS~1/Temp/hug131.tmp"
ContractViolation:
Precondition violation!
Unable to open file 'C:\Documents and Settings\New user\make: *** [974-1-975-10000.tif] Error 1

[tmodes (tmodes)]

Implemented in changeset 6a190ed0a8cb.