#!/usr/bin/perl -w

# Copyright (C) 2005, 2006 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.

# Build script wrapper for the WebKit Open Source Project.

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

my $originalWorkingDirectory = getcwd();

my $channelMessagingSupport = 0;
my $databaseSupport = 1;
my $domStorageSupport = 1;
my $gnomeKeyringSupport = 0;
my $iconDatabaseSupport = 1;
my $offlineWebApplicationSupport = 1;
my $svgSupport = 1;
my $svgAnimationSupport = 1;
my $svgFiltersSupport = 0;
my $svgForeignObjectSupport = 1;
my $svgUseSupport = 1;
my $svgFontsSupport = 1;
my $svgAsImageSupport = 1;
my $xpathSupport = 1;
my $xsltSupport = 1;
my $wmlSupport = 0;
my $coverageSupport = 0;
my $videoSupport = (isAppleWebKit() || isGtk()); # Enable by default for Apple's builds and Gtk+
my $workersSupport = (isAppleWebKit() || isGtk()); # Enable by default for Apple's builds (mac/win) and Gtk+
my $geolocationSupport = (isAppleMacWebKit() && !isTiger() && !isLeopard());
my $showHelp = 0;
my $clean = 0;
my $threeDRenderingSupport = 0;

my $programName = basename($0);
my $usage = <<EOF;
Usage: $programName [options] [options to pass to build system]
  --help                        Show this help message
  --cairo-win32                 Build using Cairo (rather than CoreGraphics) on Windows
  --chromium                    Build the Chromium port on Mac/Win/Linux
  --clean                       Cleanup the build directory
  --gtk                         Build the GTK+ port
  --[no-]3d-rendering           Toggle 3D rendering support (default: $threeDRenderingSupport)
  --[no-]channel-messaging          Toggle MessageChannel and MessagePort support (default: $channelMessagingSupport)
  --[no-]offline-web-applications   Toggle Offline Web Application Support (default : $offlineWebApplicationSupport)
  --[no-]database               Toggle Database Support (default: $databaseSupport)
  --[no-]dom-storage            Toggle DOM Storage Support (default: $domStorageSupport)
  --[no-]gnomekeyring           Toggle GNOME Keyring Support (GTK+ port only) (default: $gnomeKeyringSupport)
  --[no-]icon-database          Toggle Icon database support (default: $iconDatabaseSupport)
  --[no-]svg                    Toggle SVG support (default: $svgSupport)
  --[no-]svg-animation          Toggle SVG animation support (default: $svgAnimationSupport, implies SVG Support)
  --[no-]svg-filters            Toggle SVG filters support (default: $svgFiltersSupport, implies SVG Support)
  --[no-]svg-foreign-object     Toggle SVG foreign object support (default: $svgForeignObjectSupport, implies SVG Support)
  --[no-]svg-fonts              Toggle SVG fonts support (default: $svgFontsSupport, implies SVG Support)
  --[no-]svg-as-image           Toggle SVG as Image support (default: $svgAsImageSupport, implies SVG Support)
  --[no-]svg-use                Toggle SVG use element support (default: $svgUseSupport, implies SVG Support)
  --[no-]xpath                  Toggle XPath support (default: $xpathSupport)
  --[no-]xslt                   Toggle XSLT support (default: $xsltSupport)
  --[no-]wml                    Toggle WML support (default: $wmlSupport)
  --[no-]video                  Toggle Video support (default: $videoSupport)
  --[no-]workers                Toggle Web Workers support (default: $workersSupport)
  --[no-]geolocation            Toggle Geolocation support (default: $geolocationSupport)
  --[no-]coverage               Toggle code coverage support (default: $coverageSupport)
EOF

GetOptions(
           '3d-rendering!' => \$threeDRenderingSupport,
           'channel-messaging!' => \$channelMessagingSupport,
           'database!' => \$databaseSupport,
           'dom-storage!' => \$domStorageSupport,
           'gnomekeyring!' => \$gnomeKeyringSupport,
           'icon-database!' => \$iconDatabaseSupport,
           'offline-web-applications!' => \$offlineWebApplicationSupport,
           'svg!' => \$svgSupport,
           'svg-animation!' => \$svgAnimationSupport,
           'svg-filters!' => \$svgFiltersSupport,
           'svg-foreign-object!' => \$svgForeignObjectSupport,
           'svg-fonts!' => \$svgFontsSupport,
           'svg-as-image!' => \$svgAsImageSupport,
           'svg-use!' => \$svgUseSupport,
           'xpath!' => \$xpathSupport,
           'xslt!' => \$xsltSupport,
           'wml!' => \$wmlSupport,
           'video!' => \$videoSupport,
           'workers!' => \$workersSupport,
           'geolocation!' => \$geolocationSupport,
           'coverage!' => \$coverageSupport,
           'help' => \$showHelp,
           'clean' => \$clean);

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

checkRequiredSystemConfig();
setConfiguration();
chdirWebKit();

if (isWx()) {
    $ENV{"WEBKITOUTPUTDIR"} = productDir();

    my @opts = getWxArgs();

    if ($clean) {
        push(@opts, "clean");
    }
    system "WebKitTools/wx/build-wxwebkit @opts";
    exit exitStatus($?);
}


my $productDir = productDir();
my @overrideFeatureDefinesOption = ();

# This needs to be kept sorted, and in sync with FEATURE_DEFINES in JavaScriptCore.xcconfig, WebCore.xcconfig
# and WebKit.xcconfig to prevent needless rebuilding when using both Xcode and build-webkit.

push @overrideFeatureDefinesOption, "ENABLE_3D_RENDERING" if $threeDRenderingSupport;
push @overrideFeatureDefinesOption, "ENABLE_CHANNEL_MESSAGING" if $channelMessagingSupport;
push @overrideFeatureDefinesOption, "ENABLE_DATABASE" if $databaseSupport;
push @overrideFeatureDefinesOption, "ENABLE_DOM_STORAGE" if $domStorageSupport;
push @overrideFeatureDefinesOption, "ENABLE_ICONDATABASE" if $iconDatabaseSupport;
push @overrideFeatureDefinesOption, "ENABLE_OFFLINE_WEB_APPLICATIONS" if $offlineWebApplicationSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG" if $svgSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG_ANIMATION" if $svgAnimationSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG_AS_IMAGE" if $svgAsImageSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG_FILTERS" if $svgFiltersSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG_FONTS" if $svgFontsSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG_FOREIGN_OBJECT" if $svgForeignObjectSupport;
push @overrideFeatureDefinesOption, "ENABLE_SVG_USE" if $svgUseSupport;
push @overrideFeatureDefinesOption, "ENABLE_VIDEO" if $videoSupport;
push @overrideFeatureDefinesOption, "ENABLE_WORKERS" if $workersSupport;
push @overrideFeatureDefinesOption, "ENABLE_XPATH" if $xpathSupport;
push @overrideFeatureDefinesOption, "ENABLE_XSLT" if $xsltSupport;
push @overrideFeatureDefinesOption, "ENABLE_WML" if $wmlSupport;
push @overrideFeatureDefinesOption, "ENABLE_GEOLOCATION" if $geolocationSupport;
my $overrideFeatureDefinesString = "FEATURE_DEFINES=" . join(" ", @overrideFeatureDefinesOption);

my @coverageSupportOption = ($coverageSupport) ? XcodeCoverageSupportOptions() : ();

# Check that all the project directories are there.
my @projects = ("JavaScriptCore", "WebCore", "WebKit");
# Only Apple builds JavaScriptGlue, and only on the Mac
push @projects, "JavaScriptGlue" if isAppleMacWebKit();

my @otherDirs = ("WebKitLibraries");
for my $dir (@projects, @otherDirs) {
    if (! -d $dir) {
        die "Error: No $dir directory found. Please do a fresh checkout.\n";
    }
}

my @options = ();

# enable autotool options accordingly
if (isGtk()) {
    push @options, autotoolsFlag($databaseSupport, "database");
    push @options, autotoolsFlag($domStorageSupport, "dom-storage");
    push @options, autotoolsFlag($gnomeKeyringSupport, "gnomekeyring");
    push @options, autotoolsFlag($iconDatabaseSupport, "icon-database");
    push @options, autotoolsFlag($offlineWebApplicationSupport, "offline-web-applications");
    push @options, autotoolsFlag($threeDRenderingSupport, "3D-rendering");
    push @options, autotoolsFlag($channelMessagingSupport, "channel-messaging");
    push @options, autotoolsFlag($svgSupport, "svg");
    push @options, autotoolsFlag($svgAnimationSupport, "svg-animation");
    push @options, autotoolsFlag($svgFiltersSupport, "svg-filters");
    push @options, autotoolsFlag($svgForeignObjectSupport, "svg-foreign-object");
    push @options, autotoolsFlag($svgFontsSupport, "svg-fonts");
    push @options, autotoolsFlag($svgAsImageSupport, "svg-as-image");
    push @options, autotoolsFlag($svgUseSupport, "svg-use-element");
    push @options, autotoolsFlag($xpathSupport, "xpath");
    push @options, autotoolsFlag($xsltSupport, "xslt");
    push @options, autotoolsFlag($wmlSupport, "wml");
    push @options, autotoolsFlag($videoSupport, "video");
    push @options, autotoolsFlag($workersSupport, "web-workers");
    push @options, autotoolsFlag($coverageSupport, "coverage");
}

if (isAppleMacWebKit()) {

    push(@options, XcodeOptions());

    # Copy library and header from WebKitLibraries to a findable place in the product directory.
    my $srcLib = "WebKitLibraries/libWebKitSystemInterfaceTiger.a";
    my $lib = "$productDir/libWebKitSystemInterfaceTiger.a";
    if (!-e $lib || -M $lib > -M $srcLib) {
        print "Updating $lib\n";
        system "ditto", $srcLib, $lib;
        system "ranlib", $lib;
    }

    $srcLib = "WebKitLibraries/libWebKitSystemInterfaceLeopard.a";
    $lib = "$productDir/libWebKitSystemInterfaceLeopard.a";
    if (!-e $lib || -M $lib > -M $srcLib) {
        print "Updating $lib\n";
        system "ditto", $srcLib, $lib;
        system "ranlib", $lib;
    }

    my $srcHeader = "WebKitLibraries/WebKitSystemInterface.h";
    my $header = "$productDir/usr/local/include/WebKitSystemInterface.h";
    if (!-e $header || -M $header > -M $srcHeader) {
        print "Updating $header\n";
        system "mkdir", "-p", "$productDir/usr/local/include";
        system "ditto", $srcHeader, $header;
    }

    $srcLib = "WebKitLibraries/libWebCoreSQLite3.a";
    $lib = "$productDir/libWebCoreSQLite3.a";
    if (!-e $lib || -M $lib > -M $srcLib) {
        print "Updating $lib\n";
        system "ditto", $srcLib, $lib;
        system "ranlib", $lib;
    }

    my $srcHeaderDir = "WebKitLibraries/WebCoreSQLite3";
    my $headerDir = "$productDir/WebCoreSQLite3";
    if (!-e $headerDir || -M $headerDir > -M $srcHeaderDir) {
        print "Updating $headerDir\n";
        system "ditto", $srcHeaderDir, $headerDir;
    }
}

if (isAppleWinWebKit()) {
    # 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 WebKitTools/Scripts/update-webkit-support-libs") == 0) or die;
}

# Force re-link of existing libraries if different than expected
removeLibraryDependingOnSVG("WebCore", $svgSupport);

# Build, and abort if the build fails.
for my $dir (@projects) {
    chdir $dir or die;
    my $result = 0;

    # For Gtk and Qt the WebKit project builds all others
    if ((isGtk() || isQt()) && $dir ne "WebKit") {
        chdir ".." or die;
        next;
    }

    if (isGtk()) {
        $result = buildGtkProject($dir, $clean,  @options);
    } elsif (isQt()) {
        $result = buildQMakeQtProject($dir, $clean, @ARGV);
    } elsif (isAppleMacWebKit()) {
        my @xcodeOptions = ();
        push(@xcodeOptions, @options);
        push(@xcodeOptions, $overrideFeatureDefinesString);
        push(@xcodeOptions, @coverageSupportOption);
        push(@xcodeOptions, @ARGV);
        $result = buildXCodeProject($dir, $clean, @xcodeOptions);
    } elsif (isAppleWinWebKit()) {
        if ($dir eq "WebKit") {
            $result = buildVisualStudioProject("win/WebKit.vcproj/WebKit.sln", $clean);
        }
    } elsif (isChromium()) {
        $result = buildSconsProject($dir, $clean);
    }

    if (exitStatus($result)) {
        if (isAppleWinWebKit()) {
            print "\n\n===== BUILD FAILED ======\n\n";
            my $scriptDir = relativeScriptsDir();
            print "Please ensure you have run $scriptDir/update-webkit to install depenedencies.\n\n";
            my $baseProductDir = baseProductDir();
            print "You can view build errors by checking the BuildLog.htm files located at:\n$baseProductDir/obj/<project>/<config>.\n";
        }
        exit exitStatus($result);
    }
    chdir ".." or die;
}

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

# Write out congratulations message.

my $launcherPath = launcherPath();
my $launcherName = launcherName();

print "\n";
print "===========================================================\n";
print " WebKit is now built. To run $launcherName with this newly-built\n";
print " code, use the \"$launcherPath\" script.\n";
if ($svgSupport) {
    print "\n NOTE: WebKit has been built with SVG support enabled.\n";
    print " $launcherName will have SVG viewing capabilities.\n";
}
if ($svgAnimationSupport or $svgFiltersSupport or $svgForeignObjectSupport or $svgFontsSupport or $svgAsImageSupport or $svgUseSupport) {
    print " Your build supports the following (optional) SVG features: \n";
    print "  * Basic SVG animation.\n" if $svgAnimationSupport;
    print "  * SVG filters.\n" if $svgFiltersSupport;
    print "  * SVG foreign object.\n" if $svgForeignObjectSupport;
    print "  * SVG fonts.\n" if $svgFontsSupport;
    print "  * SVG as image.\n" if $svgAsImageSupport;
    print "  * SVG <use> support.\n" if $svgUseSupport;
}
print "===========================================================\n";