#!/usr/bin/perl -w

# Copyright (C) 2005, 2006, 2007 Apple Computer, Inc.  All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

# 1.  Redistributions of source code must retain the above copyright

#     notice, this list of conditions and the following disclaimer. 

# 2.  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. 

# 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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.

# Updates a development environment to the new WebKitAuxiliaryLibrary

use strict;

use warnings;

use File::Find;

use File::Spec;

use File::Temp ();

use FindBin;

use HTTP::Date qw(str2time);

use POSIX;

use lib $FindBin::Bin;

use webkitdirs;

sub lastModifiedToUnixTime($);

# Time in seconds that the new zip file must be newer than the old for us to

# consider them to be different. If the difference in modification time is less

# than this threshold, we assume that the files are the same. We need this

# because the zip file is served from a set of mirrors with slightly different

# Last-Modified times.

my $newnessThreshold = 30;

my $sourceDir = sourceDir();

my $file = "WebKitAuxiliaryLibrary";

my $zipFile = "$file.zip"; 

my $auxiliaryLibsURL = "http://developer.apple.com/opensource/internet/$zipFile";

my $webkitLibrariesDir = toUnixPath($ENV{'WEBKITLIBRARIESDIR'}) || "$sourceDir/WebKitLibraries/win";

my $tmpDir = File::Spec->rel2abs(File::Temp::tempdir("webkitlibsXXXXXXX", TMPDIR => 1, CLEANUP => 1));

print "Checking Last-Modified date of $zipFile...\n";

my $result = system "curl -s -I $auxiliaryLibsURL | grep Last-Modified > \"$tmpDir/$file.headers\"";

if (WEXITSTATUS($result)) {

    print STDERR "Couldn't check Last-Modified date of new $zipFile.\n";

    print STDERR "Please ensure that $auxiliaryLibsURL is reachable.\n";

    if (! -f "$webkitLibrariesDir/$file.headers") {

        print STDERR "Unable to check Last-Modified date and no version of $file to fall back to.\n";

        exit 1;

    }

    print STDERR "Falling back to existing version of $file.\n";

    exit 0;

}

if (open NEW, "$tmpDir/$file.headers") {

    my $new = lastModifiedToUnixTime(<NEW>);

    close NEW;

    if (defined $new && open OLD, "$webkitLibrariesDir/$file.headers") {

        my $old = lastModifiedToUnixTime(<OLD>);

        close OLD;

        if (defined $old && abs($new - $old) < $newnessThreshold) {

            print "Current $file is up to date\n";

            exit 0;

        }

    }

}

print "Downloading $zipFile...\n\n";

$result = system "curl -o \"$tmpDir/$zipFile\" $auxiliaryLibsURL";

die "Couldn't download $zipFile!" if $result;

$result = system "unzip", "-q", "-d", $tmpDir, "$tmpDir/$zipFile";

die "Couldn't unzip $zipFile." if $result;

print "\nInstalling $file...\n";

sub wanted

{

    my $relativeName = File::Spec->abs2rel($File::Find::name, "$tmpDir/$file/win");

    my $destination = "$webkitLibrariesDir/$relativeName";

    if (-d $_) {

        mkdir $destination;

        return;

    }

    system "cp", $_, $destination;

}

File::Find::find(\&wanted, "$tmpDir/$file");

$result = system "mv", "$tmpDir/$file.headers", $webkitLibrariesDir;

print STDERR "Couldn't move $file.headers to $webkitLibrariesDir" . ".\n" if $result;

print "The $file has been sucessfully installed in\n $webkitLibrariesDir\n";

exit;

sub toUnixPath

{

    my $path = shift;

    return unless $path;

    chomp($path = `cygpath -u '$path'`);

    return $path;

}

sub lastModifiedToUnixTime($)

{

    my ($str) = @_;

    $str =~ /^Last-Modified: (.*)$/ or return;

    return str2time($1);

}