updateheaders.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# MolMod is a collection of molecular modelling tools for python.
# Copyright (C) 2007 - 2012 Toon Verstraelen <Toon.Verstraelen@UGent.be>, Center
# for Molecular Modeling (CMM), Ghent University, Ghent, Belgium; all rights
# reserved unless otherwise stated.
#
# This file is part of MolMod.
#
# MolMod is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 3
# of the License, or (at your option) any later version.
#
# MolMod is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>
#
#--


from glob import glob
import os, sys

def strip_header(lines, closing):
    # search for the header closing line, e.g. '#--'
    counter = 0
    found = 0
    for line in lines:
        counter += 1
        if line == closing+'\n':
            found = 1
            break
    if found:
        del lines[:counter]
        # If the header closing is not found, no headers are removed
    # add a header closing line
    lines.insert(0, closing+'\n')


def fix_python(lines, header_lines):
    # check if a shebang is present
    do_shebang = lines[0].startswith('#!')
    # remove the current header
    strip_header(lines, '#--')
    # add new header (insert must be in reverse order)
    for hline in header_lines[::-1]:
        lines.insert(0, ('# '+hline).strip() + '\n')
    # add a source code encoding line
    lines.insert(0, '# -*- coding: utf-8 -*-\n')
    if do_shebang:
        lines.insert(0, '#!/usr/bin/env python\n')


def fix_c(lines, header_lines):
    # check for an exception line
    for line in lines:
        if 'no_update_headers' in line:
            return
    # remove the current header
    strip_header(lines, '//--')
    # add new header (insert must be in reverse order)
    for hline in header_lines[::-1]:
        lines.insert(0, ('// '+hline).strip() + '\n')


def fix_f77(lines, header_lines):
    # check for an exception line
    for line in lines:
        if 'no_update_headers' in line:
            return
    # remove the current header
    strip_header(lines, '!--')
    # add new header (insert must be in reverse order)
    for hline in header_lines[::-1]:
        lines.insert(0, ('! '+hline).strip() + '\n')


def main(fns):
    fixers = [
        ('.py', fix_python),
        ('.pxd', fix_python),
        ('.pyx', fix_python),
        ('.c', fix_c),
        ('.cpp', fix_c),
        ('.h', fix_c),
        ('.pyf', fix_f77),
    ]

    f = open('HEADER')
    header_lines = f.readlines()
    f.close()

    for fn in fns:
        if not os.path.isfile(fn):
            continue
        for ext, fixer in fixers:
            if fn.endswith(ext):
                print 'Fixing  ', fn
                f = file(fn)
                lines = f.readlines()
                f.close()
                fixer(lines, header_lines)
                f = file(fn, 'w')
                f.writelines(lines)
                f.close()
                break


if __name__ == '__main__':
    args = sys.argv[1:]
    main(args)