File: convert_to_vt.py

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#!/usr/bin/python3
###############################################################################
##
## Copyright (C) 2014-2016, New York University.
## Copyright (C) 2011-2014, NYU-Poly.
## Copyright (C) 2006-2011, University of Utah.
## All rights reserved.
## Contact: contact@vistrails.org
##
## This file is part of VisTrails.
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
##  - Redistributions of source code must retain the above copyright notice,
##    this list of conditions and the following disclaimer.
##  - Redistributions in binary form must reproduce the above copyright
##    notice, this list of conditions and the following disclaimer in the
##    documentation and/or other materials provided with the distribution.
##  - Neither the name of the New York University nor the names of its
##    contributors may be used to endorse or promote products derived from
##    this software without specific prior written permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
## THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
## EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
## PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
## OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
## WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
## OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
## ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
###############################################################################

class ConvertVTKToVT(object):
    def __init__(self, in_filename, out_py_file):
        self.in_filename = in_filename
        self.out_py_file = out_py_file
        
        
    def run(self):
        in_file = file(self.in_filename)
        out_file = file(self.out_py_file, 'w')

        does_continue = False
        line_count = 0
        found_starter = False
        for line in in_file:
            if line_count == 0:
                if line.startswith('#!'):
                    found_starter = True
                else:
                    print("# This file produced automatically by convert_to_vt.py\n# ", file=out_file)
            elif line_count == 1 and found_starter:
                print("# This file produced automatically by convert_to_vt.py\n# ", file=out_file)
                found_starter = False
                
            if (line.find('import ') != -1 and line.find('vtk') != -1) or \
                    line.find('VTK_DATA_ROOT = ') != -1 or \
                    does_continue:
                if line.rstrip() == 'import vtk':
                    print('import sys', file=out_file)
                    print('sys.path.append' + \
                        '("/vistrails/src/trunk/scripts/gen_vtk_examples")', file=out_file)
                    print('import vtk_imposter', file=out_file)
                    print('from colors import *', file=out_file)
                    print('vtk = vtk_imposter.vtk()', file=out_file)
                    print('VTK_DATA_ROOT = ""', file=out_file)
                    print('', file=out_file)
                    print('#', line[:-1], file=out_file)
                else:
                    if line.rstrip()[-1] == '\\':
                        does_continue = True
                    else:
                        does_continue = False
                    print('#', line[:-1], file=out_file)
            else:
                out_file.write(line)
            line_count += 1
        print('\nif len(sys.argv) > 1:', file=out_file)
        print('    out_filename = sys.argv[1]', file=out_file)
        print('else:', file=out_file)
        print('    out_filename = None', file=out_file)
        print('vtk.to_vt(out_filename)', file=out_file)
        out_file.close()
            

if __name__ == '__main__':
    import sys
    if len(sys.argv) < 3:
        print('Usage: %s <in_file> <out_py_file>' % sys.argv[0])
        sys.exit(0)
    converter = ConvertVTKToVT(*sys.argv[1:])
    converter.run()