From fa8b7f99072328f6a9855cd0b300691405a09ec1 Mon Sep 17 00:00:00 2001
From: Marius Gavrilescu <marius@ieval.ro>
Date: Wed, 22 Apr 2015 10:22:45 +0300
Subject: [PATCH] Use zopfli if available

---
 Makefile.PL    |  1 +
 make_static.PL | 19 ++++++++++++-------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/Makefile.PL b/Makefile.PL
index 2bf04ac..0d62f05 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -31,6 +31,7 @@ WriteMakefile(
 		   warnings    0
 
 		   File::Slurp                      0
+		   File::Which                      0
 		   Gruntmaster::Data                0
 		   HTML::Element::Library           0
 		   HTML::TreeBuilder                0
diff --git a/make_static.PL b/make_static.PL
index 3374f5c..9fd5bca 100644
--- a/make_static.PL
+++ b/make_static.PL
@@ -6,6 +6,7 @@ use CSS::Minifier::XS qw/minify/;
 use Digest::SHA qw/sha256_base64/;
 use IO::Compress::Gzip qw/gzip/;
 use File::Slurp qw/read_file write_file edit_file_lines/;
+use File::Which;
 use List::Util qw/first/;
 
 mkdir 'static';
@@ -14,7 +15,15 @@ mkdir 'static/js';
 
 sub gzip_file {
 	my ($file) = @_;
-	gzip $file => "$file.gz", -Level => 9, Minimal => 1;
+	my $zopfli = which 'zopfli';
+	system $zopfli => $file if $zopfli;
+	gzip $file => "$file.gz", -Level => 9, Minimal => 1 unless $zopfli;
+}
+
+sub write_gzfile {
+	my ($file, @content) = @_;
+	write_file $file, @content;
+	gzip_file $file
 }
 
 sub read_css_into_blocks {
@@ -49,18 +58,14 @@ sub make_css {
 		}
 	}
 
-	for my $name (keys %css) {
-		write_file "static/css/$name.css", minify $css{$name};
-		gzip_file "static/css/$name.css"
-	}
+	write_gzfile "static/css/$_.css", minify $css{$_} for keys %css
 }
 
 sub make_js {
 	system java => -jar => 'compiler.jar', qw,-O SIMPLE --create_source_map static/js/js.map --js_output_file static/js/all.js --language_in ECMASCRIPT6_STRICT --language_out ECMASCRIPT5_STRICT --source_map_location_mapping js/|/static/js/,, <js/*>;
 	my $js = read_file 'static/js/all.js';
-	write_file 'static/js/all.js', '//# sourceMappingURL=/static/js/js.map', "\n", $js;
+	write_gzfile 'static/js/all.js', '//# sourceMappingURL=/static/js/js.map', "\n", $js;
 	system 'cp', '-rp', 'js', 'static/';
-	gzip_file 'static/js/all.js';
 }
 
 my $css_mtime = -M 'static/css/slate.css' // 0;
-- 
2.30.2