#!/usr/bin/perl -w

# Copyright (C) 2005-2016 Apple 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. 
#
# 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.

use strict;
use File::Spec;
use FindBin;
use Getopt::Long qw(:config pass_through);
use lib $FindBin::Bin;
use webkitdirs;

my $showHelp = 0;
my $wksi = 0;
my $clean = 0;
my $useFullLibPaths = 0;
my $osxVersion;
my $force = 0;

determineXcodeSDK();

my $programName = basename($0);
my $usage = <<EOF;
Usage: $programName [options]
  --help                        Show this help message
  --[no-]wksi                   Toggle copying WebKitSystemInterface drops (default: $wksi)
  --clean                       Clean the libraries (default: $clean)
  --[no-]use-full-lib-paths     Toggle using full library paths
  --sdk=<sdk>                   Use a specific Xcode SDK
  --device                      Use the current iphoneos.internal SDK (iOS only)
  --simulator                   Use the current iphonesimulator SDK (iOS only)
  --osx-version=<version>       Set the OS X version to use when deciding what to copy.
  --[no-]force                  Toggle forcing the copy - i.e. ignoring timestamps (default: $force)
EOF

GetOptions(
    'help' => \$showHelp,
    'wksi!' => \$wksi,
    'clean' => \$clean,
    'use-full-lib-paths!' => \$useFullLibPaths,
    'osx-version=s' => \$osxVersion,
    'force!' => \$force
);

if ($showHelp) {
   print STDERR $usage;
   exit 1;
}

my $productDir = shift @ARGV;
if ($productDir) {
    $productDir = File::Spec->rel2abs($productDir);
} else {
    $productDir = $ENV{BUILT_PRODUCTS_DIR} || productDir();
}

if (!isIOSWebKit() && !$osxVersion &&!isAnyWindows()) {
    $osxVersion = `sw_vers -productVersion | cut -d. -f-2`;
    chomp($osxVersion);
}

chdirWebKit();

sub executeRanlib($)
{
    my ($library) = @_;
    my @args;
    push @args, ("-sdk", xcodeSDK()) if xcodeSDK();
    push @args, "ranlib";
    push @args, "-no_warning_for_no_symbols" if isIOSWebKit();
    system("xcrun", @args, $library) == 0 or die;
}

sub unpackIfNecessary
{
    my ($targetDir, $sampleFile, $package, $hasLibraries) = @_;
    if ($force || !-e $sampleFile || -M $sampleFile > -M $package) {
        print "Unpacking $package into $targetDir\n";
        (system("tar -C $targetDir -xmf $package") == 0) or die;
        if ($hasLibraries) {
            foreach my $library (`tar -tf $package`) {
                chomp $library;
                print "   Ranlib $library\n";
                executeRanlib($targetDir . "/" . $library);
            }
        }
        return 1;
    }
    return 0;
}

sub dittoHeaders
{
    my ($srcHeader, $header) = @_;
    if ($force || !-e $header || -M $header > -M $srcHeader) {
        print "Updating $header\n";
        (system("ditto", $srcHeader, $header) == 0) or die;
    }
}

if ($clean) {
    print "Cleaning.\n";    
    (system("rm", "-rf", File::Spec->catfile($productDir, "usr", "local", "include", "WebKitSystemInterface.h")) == 0) or die;
    unlink glob "$productDir/libWebKitSystemInterface*" or die if glob "$productDir/libWebKitSystemInterface*";
    unlink glob "$productDir/usr/local/lib/libWebKitSystemInterface*" or die if glob "$productDir/usr/local/lib/libWebKitSystemInterface*";
    unlink glob "$productDir/libLTO*" or die if glob "$productDir/libLTO*";
}

if ($wksi) {
    (system("mkdir", "-p", "$productDir/usr/local/include") == 0) or die;
    
    my $libraryDir = $useFullLibPaths ? "$productDir/usr/local/lib" : $productDir;
    (system("mkdir", "-p", $libraryDir) == 0) or die;

    my @librariesToCopy;
    if (isIOSWebKit()) {
        push(@librariesToCopy, (
            "libWebKitSystemInterfaceIOSDevice9.0.a",
            "libWebKitSystemInterfaceIOSSimulator9.0.a",
            "libWebKitSystemInterfaceIOSDevice9.2.a",
            "libWebKitSystemInterfaceIOSSimulator9.2.a",
            "libWebKitSystemInterfaceIOSDevice9.3.a",
            "libWebKitSystemInterfaceIOSSimulator9.3.a",
        ));
    } else {
        push(@librariesToCopy, (
            "libWebKitSystemInterfaceYosemite.a",
            "libWebKitSystemInterfaceElCapitan.a"
        ));
    }

    foreach my $libraryName (@librariesToCopy) {
        my $sourceLibrary = "WebKitLibraries/" . $libraryName;
        my $targetLibrary = "$libraryDir/" . $libraryName;
        if ($force || !-e $targetLibrary || -M $targetLibrary > -M $sourceLibrary) {
            print "Updating $targetLibrary\n";
            (system("ditto", $sourceLibrary, $targetLibrary) == 0) or die;
            executeRanlib($targetLibrary);
        }
    }
    
    dittoHeaders("WebKitLibraries/WebKitSystemInterface.h", "$productDir/usr/local/include/WebKitSystemInterface.h");
}

sub fileContains
{
    my ($filename, $string) = @_;
    open my $fileHandle, '<', $filename or die;
    while (<$fileHandle>) {
        return 1 if /^$string$/;
    }
    return 0;
}

sub isContentOfFileEqualToString($$)
{
    my ($filename, $string) = @_;
    open my $fileHandle, '<', $filename or die;
    binmode $fileHandle;
    my $contents = <$fileHandle>;
    return $contents eq $string;
}