make_static.PL

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