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Loki Game Utility Functions
Copyright (C) 1999 Loki Entertainment Software
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
/* This function launches the user's web browser with the given URL.
The browser detection can be overridden by the LOKI_BROWSER environment
variable, which is used as the format string: %s is replaced with the
URL to be launched.
This function returns -1 if a browser could not be found, or the return
value of system("browser command") if one is available.
There is no way to tell whether or not the URL was valid.
WARNING: This function should NOT be called when a video mode is set.
extern int loki_launchURL(const char *url);
/* Check if the program is in PATH */
extern int loki_valid_program(const char *program);