# Copyright (C) 2005, Giovanni Bajo

#

# This program 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 2

# of the License, or (at your option) any later version.

#

# In addition to the permissions in the GNU General Public License, the

# authors give you unlimited permission to link or embed the compiled

# version of this file into combinations with other programs, and to

# distribute those combinations without any restriction coming from the

# use of this file. (The General Public License restrictions do apply in

# other respects; for example, they cover modification of the file, and

# distribution when not linked into a combine executable.)

#

# This program 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, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

# PyOpenGL (specifically, OpenGL.__init__) reads a "version" text file

# containing the version number to export it as OpenGL.__version__. When

# packaging with PyInstaller, the 'version' file does not exist, and importing

# PyOpenGL results in an IOError.

# The (convoluted) solution is to override Python's builtin "open" with our

# own function which detects when "version" is opened and returns some fake

# content stream (through cStringIO).

__realopen__ = open

def myopen(fn, *args):

    import os

    lastdir = os.path.basename(os.path.dirname(fn))

    if os.path.basename(fn) == "version" and os.path.splitext(lastdir)[1] == ".pyz":

        import cStringIO

        # Restore original open, since we're almost done

        __builtins__.__dict__["open"] = __realopen__

        # Report a fake revision number. Anything would do since it's not

        # used by the library, but it needs to be made of four numbers

        # separated by dots.

        return cStringIO.StringIO("0.0.0.0")

    return __realopen__(fn, *args)

__builtins__.__dict__["open"] = myopen