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1 #!/usr/bin/perl
2 use v5.14;
3 use warnings;
4
5 use CSS::Minifier::XS qw/minify/;
6 use Digest::SHA qw/sha256_base64/;
7 use IO::Compress::Gzip qw/gzip/;
8 use File::Slurp qw/read_file write_file edit_file_lines/;
9 use List::Util qw/first/;
10
11 mkdir 'static';
12 mkdir 'static/css';
13 mkdir 'static/js';
14
15 sub gzip_file {
16 my ($file) = @_;
17 gzip $file => "$file.gz", -Level => 9, Minimal => 1;
18 }
19
20 sub read_css_into_blocks {
21 my ($file) = @_;
22 my (@blocks, $block);
23 for (read_file $file) {
24 $block .= $_;
25 if (/^}/) {
26 push @blocks, $block;
27 $block = '';
28 }
29 }
30 \@blocks
31 }
32
33 sub make_css {
34 my %css;
35 $css{common} .= read_file $_ for <css/*.css>;
36
37 my (%themes, $rndtheme);
38 for (<css/themes/*>) {
39 ($rndtheme) = m,themes/(.*)\.css,;
40 $themes{$rndtheme} = read_css_into_blocks $_;
41 }
42
43 while (grep { scalar @$_ } values %themes) {
44 my %blocks = map { $_ => (shift @{$themes{$_}}) // '' } keys %themes;
45 if (grep { $_ ne $blocks{$rndtheme} } values %blocks) {
46 $css{$_} .= $blocks{$_} for keys %themes;
47 } else {
48 $css{common} .= $blocks{$rndtheme};
49 }
50 }
51
52 for my $name (keys %css) {
53 write_file "static/css/$name.css", minify $css{$name};
54 gzip_file "static/css/$name.css"
55 }
56 }
57
58 sub make_js {
59 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/*>;
60 my $js = read_file 'static/js/all.js';
61 write_file 'static/js/all.js', '//# sourceMappingURL=/static/js/js.map', "\n", $js;
62 system 'cp', '-rp', 'js', 'static/';
63 gzip_file 'static/js/all.js';
64 }
65
66 my $css_mtime = -M 'static/css/slate.css' // 0;
67 for (<css/*>, <css/themes/*>) {
68 if (!$css_mtime || $css_mtime > -M) {
69 make_css;
70 last
71 }
72 }
73
74 my $js_mtime = -M 'static/js/all.js' // 0;
75 for (<js/*>) {
76 if (!$js_mtime || $js_mtime > -M) {
77 make_js;
78 last
79 }
80 }
81
82 edit_file_lines {
83 my ($file) = m,(static.*\.(?:css|js)),;
84 return unless $file;
85 my $hash = sha256_base64 scalar read_file $file;
86 s/integrity=".*"/integrity="sha256-$hash="/;
87 } 'tmpl/skel.en'
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