#!/usr/bin/python
#   imglob - expand list of image filenames
#   Stephen Smith, Mark Jenkinson and Matthew Webster FMRIB Image Analysis Group
#   Copyright (C) 2009 University of Oxford 
#   Part of FSL - FMRIB's Software Library
#   http://www.fmrib.ox.ac.uk/fsl
#   fsl@fmrib.ox.ac.uk
#   
#   Developed at FMRIB (Oxford Centre for Functional Magnetic Resonance
#   Imaging of the Brain), Department of Clinical Neurology, Oxford
#   University, Oxford, UK
#   
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#   FMRIB Software Library, Release 5.0 (c) 2012, The University of
#   Oxford (the "Software")
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import sys
import os
setAvailable=True
if sys.version_info < (2, 4):
   import sets
   from sets import Set
   setAvailable=False

def usage():
    print "Usage: $0 [-extension/extensions] <list of names>"
    print "       -extension for one image with full extension"
    print "       -extensions for image list with full extensions"
    sys.exit(1)

def removeExt(input):
    output=input.replace(".nii.gz","")    
    output=output.replace(".nii","")
    output=output.replace(".hdr.gz","")
    output=output.replace(".hdr","")
    output=output.replace(".img.gz","")
    output=output.replace(".img","")
    return output


if len(sys.argv) <= 1:
    usage()

deleteExtensions=True
singleImage=True;
startingArg=1

if sys.argv[1] == "-extensions":
   singleImage=False
   deleteExtensions=False
   startingArg=2
if sys.argv[1] == "-extension":
   deleteExtensions=False
   startingArg=2
    
filelist=[]
for arg in range(startingArg, len(sys.argv)):
    output=removeExt(sys.argv[arg])
    if os.path.exists(output+".nii"):
        filelist.append(output+".nii")
    if os.path.exists(output+".nii.gz"):
        filelist.append(output+".nii.gz")
    if os.path.exists(output+".hdr"):
        filelist.append(output+".hdr")
    if os.path.exists(output+".hdr.gz"):
        filelist.append(output+".hdr.gz")
    if os.path.exists(output+".img.gz") and not singleImage:        
        filelist.append(output+".img.gz")
    if os.path.exists(output+".img")and not singleImage:        
        filelist.append(output+".img")

if deleteExtensions:
    for file in range(0, len(filelist)):
        filelist[file]=removeExt(filelist[file])
if setAvailable:
   filelist=list(set(filelist))
else:
   filelist=list(Set(filelist))
filelist.sort()


for file in range(0, len(filelist)):
    print filelist[file],
    if file < len(filelist)-1:
       print " ",