Tools/Scripts/ensure-valid-python

#!/usr/bin/env perl
# Copyright (C) 2010 Google Inc. All rights reserved.
#
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#     its contributors may be used to endorse or promote products derived
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use strict;
use warnings;

use FindBin;
use Getopt::Long;

use lib $FindBin::Bin;
use webkitdirs;
use VCSUtils;

sub checkPythonVersion()
{
    # Will exit 0 if Python is 2.7, non-zero otherwise.
    `python -c "import sys;sys.exit(sys.version_info[:2] != (2,7))"`;
    return exitStatus($?) == 0;
}

sub main()
{
    my $checkOnly = 0;
    my $showHelp = 0;
    my $getOptionsResult = GetOptions(
        'check-only!' => \$checkOnly,
        'help|h' => \$showHelp,
    );
    if (!$getOptionsResult || $showHelp) {
        print STDERR <<HELP;
Usage: $0 [options]
  --check-only        Check python version only.
  -h|--help           Show this help message.
HELP
        return 1;
    }
    # Congrats, your Python is fine.
    return 0 if checkPythonVersion();

    return 1 if $checkOnly;

    print "Your Python version is insufficient to run WebKit's Python code.  Please update.\n";
    print "See http://trac.webkit.org/wiki/PythonGuidelines for more info.\n";
    return 1;
}

exit(main());