#!/usr/bin/env perl

# Copyright (C) 2005-2019 Apple Inc. All rights reserved.
# Copyright (C) 2009 Google Inc. All rights reserved.
# Copyright (C) 2010 moiji-mobile.com All rights reserved.
# Copyright (C) 2011 Research In Motion Limited. All rights reserved.
# Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
#
# 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 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.

# Build script wrapper for the WebKit Open Source Project.

use strict;
use warnings;
use File::Basename;
use File::Find;
use File::Spec;
use FindBin;
use Getopt::Long qw(:config pass_through no_auto_abbrev);
use lib $FindBin::Bin;
use webkitdirs;
use List::Util qw(first);
use webkitperl::FeatureList qw(getFeatureOptionList);
use POSIX;
use Text::ParseWords;

sub writeCongrats();

checkRequiredSystemConfig();
setConfiguration();

if (shouldUseFlatpak()) {
    print "Building flatpak based environment\n";
    my @command = (File::Spec->catfile(sourceDir(), "Tools", "Scripts", "build-webkit"));
    runInFlatpak(@command);
}

my $originalWorkingDirectory = getcwd();
chdirWebKit();

my $showHelp = 0;
my $verbose = 0;
my $clean = 0;
my $minimal = 0;
my $installHeaders;
my $installLibs;
my $prefixPath;
my $makeArgs = "";
my @cmakeArgs;
my $onlyWebKitProject = 0;
my $coverageSupport = 0;
my $shouldRunStaticAnalyzer = 0;
my $noExperimentalFeatures = 0;
my $ltoMode = "default";
my $useWorkspace = undef;
my $startTime = time();
my $archs32bit = 0;
my $skipLibraryUpdate = 0;
my $useCCache = -1;
my $exportCompileCommands = 0;

my @features = getFeatureOptionList();

# Additional environment parameters
push @ARGV, parse_line('\s+', 0, $ENV{'BUILD_WEBKIT_ARGS'}) if ($ENV{'BUILD_WEBKIT_ARGS'});

# Initialize values from defaults
foreach (@ARGV) {
    if ($_ eq '--minimal') {
        $minimal = 1;
    } elsif ($_ eq 'ARCHS=i386' or $_ eq 'ARCHS=armv7' or $_ eq 'ARCHS=armv7s') {
        $archs32bit = 1;
    }
}

# Feature flags default to undefined, where they will inherit the default value
# specified by the build system, or to 'off' if --minimal is specified.
foreach (@features) {
    ${$_->{value}} = ($minimal ? 0 : undef);
}

my $programName = basename($0);
my $usage = <<EOF;
Usage: $programName [options] [options to pass to build system]
  -h, --help                        Show this help message
  -v, --verbose                     Show verbose build output
  --clean                           Cleanup the build directory
  --generate-project-only           Only generate project files
  --debug                           Compile with Debug configuration
  --release                         Compile with Release configuration
  --sdk=<sdk>                       Use a specific Xcode SDK (Apple platforms only)
  --ios-device                      Use "iphoneos.internal" SDK if installed, else "iphoneos" SDK (iOS only)
  --device                          DEPRECATED alias of --ios-device
  --ios-simulator                   Use "iphonesimulator.internal" SDK if installed, else "iphonesimulator" SDK (iOS only)
  --simulator                       DEPRECATED alias of --ios-simulator
  --tvos-device                     Use "appletvos.internal" SDK if installed, else "appletvos" SDK (tvOS only)
  --tvos-simulator                  Use "appletvsimulator" (tvOS only)
  --watchos-device                  Use "watchos.internal" SDK if installed, else "watchos" SDK (watchOS only)
  --watchos-simulator               Use "watchsimulator" (watchOS only)
  --coverage                        Enable code coverage support (Mac only)
  --analyze                         Enable static anaylsis (Apple platforms only)
  --lto-mode=<mode>                 Set Link Time Optimization mode (full, thin, or none) (LLVM only)
  --[no-]use-workspace              Use WebKit.xcworkspace and XCBuild (Apple platforms only)

  --ftw                             Build the FTW Windows port
  --gtk                             Build the GTK+ port
  --wpe                             Build the WPE port
  --wincairo                        Build using Cairo (rather than CoreGraphics) on Windows
  --playstation                     Build the PlayStation port

  --inspector-frontend              Copy Web Inspector user interface resources to the build directory

  --prefix=<path>                   Set installation prefix to the given path (CMake only, except Windows)
  --makeargs=<arguments>            Optional Makefile flags
  --cmakeargs=<arguments>           One or more optional CMake flags (e.g. --cmakeargs="-DFOO=bar -DCMAKE_PREFIX_PATH=/usr/local")

  --minimal                         No optional features, unless explicitly enabled
  --no-experimental-features        No experimental features, unless explicitly enabled (CMake only)

  --only-webkit                     Build only the WebKit project

  --skip-library-update             Skip the check to see if windows libraries are up to date

  --[no-]use-ccache                 Enable (or disable) CCache, if available

  --export-compile-commands         Generate compile_commands.json (Apple platforms only)

EOF

my %options = (
    'h|help' => \$showHelp,
    'v|verbose' => \$verbose,
    'clean' => \$clean,
    'install-headers=s' => \$installHeaders,
    'install-libs=s' => \$installLibs,
    'prefix=s' => \$prefixPath,
    'makeargs=s' => \$makeArgs,
    'cmakeargs=s' => \@cmakeArgs,
    'minimal' => \$minimal,
    'only-webkit' => \$onlyWebKitProject,
    'coverage' => \$coverageSupport,
    'analyze' => \$shouldRunStaticAnalyzer,
    'no-experimental-features' => \$noExperimentalFeatures,
    'lto-mode=s' => \$ltoMode,
    'use-workspace!' => \$useWorkspace,
    'skip-library-update' => \$skipLibraryUpdate,
    'use-ccache!' => \$useCCache,
    'export-compile-commands' => \$exportCompileCommands
);

# Build usage text and options list from features
foreach (@features) {
    my $opt = sprintf("%-35s", "  --[no-]$_->{option}");
    $usage .= "$opt $_->{desc}\n";
    $options{"$_->{option}!"} = $_->{value};
}

GetOptions(%options);

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

$ENV{'VERBOSE'} = 1 if $verbose;

if ($useCCache == 1) {
    $ENV{'WK_USE_CCACHE'} = "YES";
} elsif ($useCCache == 0) {
    $ENV{'WK_USE_CCACHE'} = "NO";
}

$ENV{'EXPORT_COMPILE_COMMANDS'} = "YES" if $exportCompileCommands;

my $productDir = productDir();

# Check that all the project directories are there.
my @projects = ("Source/JavaScriptCore");
if (isAppleCocoaWebKit()) {
    push @projects, ("Source/WebGPU");
}
push @projects, ("Source/WebCore");
push @projects, ("Source/WebKitLegacy");


# Build WTF as a separate static library on ports which support it.
splice @projects, 0, 0, "Source/WTF" if isAppleWebKit() or isWinCairo() or isFTW();

splice @projects, 0, 0, "Source/bmalloc" if isAppleCocoaWebKit();

# Ports using CMake will check if directories exist in the CMake configuration.
if (!isCMakeBuild()) {
    for my $dir (@projects) {
        if (! -d $dir) {
            die "Error: No $dir directory found. Please do a fresh checkout.\n";
        }
    }
}

if ((isAppleWebKit() || isWinCairo() || isPlayStation() || isFTW()) && !-d "WebKitLibraries") {
    die "Error: No WebKitLibraries directory found. Please do a fresh checkout.\n";
}

my @options = ();

if (isAppleCocoaWebKit()) {
    push @options, XcodeOptions();

    sub option($$)
    {
        my ($feature, $isEnabled) = @_;
        return "" if not defined $isEnabled;
        return $feature . "=" . ($isEnabled ? $feature : "");
    }

    foreach (@features) {
        my $option = option($_->{define}, ${$_->{value}});
        push @options, $option unless $option eq "";
    }

    # In workspaces, build order is determined by XCBuild.
    if (!$useWorkspace) {
        # ANGLE and libwebrtc must come before WebCore
        splice @projects, 0, 0, ("Source/ThirdParty/ANGLE");
        # if (not $archs32bit and (portName() eq Mac or portName() eq iOS or portName() eq watchOS)) {
        if (portName() eq Mac or portName() eq iOS) {
            splice @projects, 0, 0, ("Source/ThirdParty/libwebrtc");
        }

        push @projects, ("Source/WebKit");

        if (!isEmbeddedWebKit()) {
            push @projects, ("Tools/MiniBrowser");

            # WebInspectorUI must come after JavaScriptCore and WebCore but before WebKit and WebKit2
            my $webKitIndex = first { $projects[$_] eq "Source/WebKitLegacy" } 0..$#projects;
            splice(@projects, $webKitIndex, 0, "Source/WebInspectorUI");
        }

        if (isAppleMacWebKit()) {
            push @projects, ("Tools/lldb/lldbWebKitTester");
        }

        # Build Tools needed for Apple ports (except for tvOS)
        push @projects, ("Tools/DumpRenderTree", "Tools/WebKitTestRunner", "Source/ThirdParty/gtest", "Tools/TestWebKitAPI");
    }

} elsif (isWinCairo() && !$skipLibraryUpdate) {
    (system("python Tools/Scripts/update-webkit-wincairo-libs.py") == 0) or die;
} elsif (isAppleWinWebKit() && !$skipLibraryUpdate) {
    # Copy WebKitSupportLibrary to the correct location in WebKitLibraries so it can be found.
    # Will fail if WebKitSupportLibrary.zip is not in source root.
    (system("perl Tools/Scripts/update-webkit-support-libs") == 0) or die;
    (system("perl Tools/Scripts/update-webkit-auxiliary-libs") == 0) or die;
    setupAppleWinEnv()
}

# If asked to build just the WebKit project, overwrite the projects
# list after all of the port specific tweaks have been made to
# build options, etc.
@projects = ("Source/WebKitLegacy") if $onlyWebKitProject;

my $result = 0;

if (isInspectorFrontend()) {
    die "The --inspector-frontend option is not supported for CMake-based builds." if isCMakeBuild();
    @projects = ("Source/WebInspectorUI");
}

if (isCMakeBuild() && !isAnyWindows()) {
    if (!canUseNinja() || defined($ENV{NUMBER_OF_PROCESSORS})) {
        # If the user environment is not setting a specific number of process,
        # then don't pass the number of jobs to Ninja. Because Ninja will
        # automatically determine the number of jobs to run in parallel.
        $makeArgs .= ($makeArgs ? " " : "") . "-j" . numberOfCPUs() if $makeArgs !~ /-j\s*\d+/;
    }

    my $maxCPULoad = maxCPULoad() if $makeArgs !~ /-l\s*\d+\.?\d*/;
    $makeArgs .= " -l" . maxCPULoad() if defined $maxCPULoad;

    # We remove CMakeCache to avoid the bots reusing cached flags when
    # we enable new features. This forces a reconfiguration.
    my @featureArgs = cmakeArgsFromFeatures(@features, !$noExperimentalFeatures);
    removeCMakeCache(@featureArgs);

    buildCMakeProjectOrExit($clean, $prefixPath, $makeArgs, @featureArgs, @cmakeArgs);
}

my $baseProductDir = baseProductDir();
if (isAppleWinWebKit() || isWinCairo() || isPlayStation() || isFTW()) {
    my @featureArgs = cmakeArgsFromFeatures(@features, !$noExperimentalFeatures);
    removeCMakeCache(@featureArgs);

    chdirWebKit();
    if (exitStatus(generateBuildSystemFromCMakeProject($prefixPath, @featureArgs, @cmakeArgs))) {
        die "Run Visual Studio 2017 installation vcvars.bat before build-webkit when using ninja";
    }

    exit 0 if isGenerateProjectOnly();

    chdirWebKit();
    if (canUseNinja()) {
        chdir File::Spec->catdir($baseProductDir, configuration());
        $result = system("ninja");
    } else {
        $result = buildVisualStudioProject(File::Spec->catfile($baseProductDir, configuration(), "WebKit.sln"), $clean);
    }
    if (exitStatus($result)) {
        my $scriptDir = relativeScriptsDir();
        if (isAppleWinWebKit() || isWinCairo() || isFTW()) {
            print "\n\n===== BUILD FAILED ======\n\n";
            print "Please ensure you have run $scriptDir/update-webkit to install dependencies.\n\n";
            print "You can view build errors by checking the BuildLog.htm files located at:\n$baseProductDir/obj/<project>/<config>.\n";
        }
        exit exitStatus($result);
    }
} elsif (isAppleCocoaWebKit() && !isCMakeBuild()) {
    exit 0 if isGenerateProjectOnly();

    my @local_options = @options;
    push @local_options, XcodeCoverageSupportOptions() if $coverageSupport;
    push @local_options, XcodeStaticAnalyzerOption() if $shouldRunStaticAnalyzer;
    push @local_options, "WK_LTO_MODE=$ltoMode" if ($ltoMode ne "default");
    # When we know we're in a workspace (and not an individual project), turn
    # on dependency validation errors. Other conditions (e.g. whether we're in
    # a script phase or not) influence the actual VALIDATE_DEPENDENCIES setting
    # recognized by the build system.
    push @local_options, "WK_VALIDATE_DEPENDENCIES=YES_ERROR" if $useWorkspace;
 
    markBaseProductDirectoryAsCreatedByXcodeBuildSystem();

    # Build, and abort if the build fails.
    if ($useWorkspace) {
        my $scheme = $onlyWebKitProject ? "WebKitLegacy" : "All Modules";
        $result = buildXCodeWorkspace("WebKit.xcworkspace", $scheme, $clean, @local_options, @ARGV);
        if (exitStatus($result)) {
            exit exitStatus($result);
        }
    } else {
        for my $dir (@projects) {
            chdir $dir or die;
            $result = 0;

            my $project = basename($dir);
            my $projectPath = $project =~ /gtest/ ? "xcode/gtest" : $project;
            $result = buildXCodeProject($projectPath, $clean, @local_options, @ARGV);

            # Various build* calls above may change the CWD.
            chdirWebKit();

            if (exitStatus($result)) {
                exit exitStatus($result);
            }
        }
    }

    if (isInspectorFrontend()) {
        exit exitStatus($result);
    }

    # Build ImageDiff for host
    my @command = File::Spec->catfile(getcwd(), "/Tools/Scripts/build-imagediff");
    chdirWebKit();
    if (!-e $command[0]) {
        die "build-imagediff script not found";
    }

    if ($clean) {
        push @command, " --clean";
    }
    push @command, argumentsForConfiguration();
    push @command, @ARGV;
    @command = extractNonMacOSHostConfiguration(\@command);
    $result = system(@command);
    if (exitStatus($result)) {
        exit exitStatus($result);
    }
}

# Don't report the "WebKit is now built" message after a clean operation.
exit if $clean;

# Don't report congrats message if build was interrupted by the user.
exit if ($result & 127) == SIGINT;

# Explicitly chdir back to where exit will take us anyway, since the following "launcher"
# message is relative to that directory.
chdir $originalWorkingDirectory;

# Write out congratulations message.
writeCongrats();

exit 0;

sub writeCongrats()
{
    my $launcherPath = launcherPath();
    my $launcherName = launcherName();
    my $endTime = time();
    my $buildTime = formatBuildTime($endTime - $startTime);

    print "\n";
    print "====================================================================\n";
    print " WebKit is now built ($buildTime). \n";
    if ($launcherPath && $launcherName) {
        print " To run $launcherName with this newly-built code, use the\n";
        print " \"$launcherPath\" script.\n";
    }
    print "====================================================================\n";
}