From 59e4b3bee4d2d268c7876f8c1d8b144f06fce82d Mon Sep 17 00:00:00 2001
From: nocd5 <nocd5rd@gmail.com>
Date: Fri, 8 Jan 2021 23:52:37 +0900
Subject: [PATCH] Replace a script for generating `assetes.go`

assetes.go.rb -> assetes.go.js
---
 assets.go.js | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 assets.go.rb | 68 --------------------------------------------------
 2 files changed, 70 insertions(+), 68 deletions(-)
 create mode 100644 assets.go.js
 delete mode 100644 assets.go.rb

diff --git a/assets.go.js b/assets.go.js
new file mode 100644
index 0000000..5707d76
--- /dev/null
+++ b/assets.go.js
@@ -0,0 +1,70 @@
+const fs = require('fs');
+const path = require('path');
+
+let js = '';
+let mathjax = '';
+let mathjax_cfg = '';
+let css = '';
+
+const files = fs.readdirSync(path.join(__dirname, 'assets'))
+                .map(f => path.join(__dirname, 'assets', f));
+
+files.filter(f => path.extname(f) == '.js').forEach(f => {
+  if (path.basename(f).match(/mathjax/i)) {
+    if (path.basename(f).match(/config/i)) {
+      mathjax_cfg += '<script type="text/x-mathjax-config">\n';
+      mathjax_cfg += fs.readFileSync(f, { encoding: 'utf8' });
+      mathjax_cfg += '\n</script>\n';
+    }
+    else {
+      mathjax += '<script type="text/javascript">\n';
+      mathjax += fs.readFileSync(f, { encoding: 'utf8' });
+      mathjax += '\n</script>\n';
+    }
+  }
+  else {
+    js += '<script type="text/javascript">\n';
+    js += fs.readFileSync(f, { encoding: 'utf8' });
+    js += '\n</script>\n';
+  }
+});
+
+files.filter(f => path.extname(f) == '.css').forEach(f => {
+  css += '<style type="text/css">\n';
+  css += fs.readFileSync(f, { encoding: 'utf8' });
+  css += '\n</style>\n';
+});
+
+const str2bytes = str => [...Buffer.from(str)]
+  .map(b => '0x' + b.toString(16).toUpperCase().padStart(2, '0'))
+  .join(', ')
+  .replace(/(?:0x\w{2},\s*){16}/g, '$&\n')
+  .replace(/\s+\n/g, '\n');
+
+let js_bytes = str2bytes(js);
+let mathjax_bytes = str2bytes(mathjax);
+let mathjax_cfg_bytes = str2bytes(mathjax_cfg);
+let css_bytes = str2bytes(css);
+
+const content = `package main
+
+var js_bytes = [...]byte{
+	${js_bytes.replace(/\n/g, '\n\t')},
+}
+var mathjax_cfg_bytes = [...]byte{
+	${mathjax_cfg_bytes.replace(/\n/g, '\n\t')},
+}
+var mathjax_bytes = [...]byte{
+	${mathjax_bytes.replace(/\n/g, '\n\t')},
+}
+var css_bytes = [...]byte{
+	${css_bytes.replace(/\n/g, '\n\t')},
+}
+`;
+
+fs.writeFile(path.join(__dirname, 'assets.go'), content, err => {
+  if (err) {
+    console.log(err.message);
+  }
+});
+
diff --git a/assets.go.rb b/assets.go.rb
deleted file mode 100644
index a13f56a..0000000
--- a/assets.go.rb
+++ /dev/null
@@ -1,68 +0,0 @@
-#!/usr/bin/env ruby
-
-parent = File.expand_path(File.dirname(__FILE__))
-
-js = ''
-mathjax = ''
-mathjax_cfg = ''
-Dir.glob(parent + '/assets/*.js').each do |f|
-  if File.basename(f) =~ /mathjax/i then
-    if File.basename(f) =~ /config/i then
-        mathjax_cfg += '<script type="text/x-mathjax-config">' + "\n"
-        mathjax_cfg += File.read(f, encoding: Encoding::UTF_8) + "\n"
-        mathjax_cfg += '</script>' + "\n"
-    else
-        mathjax += '<script type="text/javascript">' + "\n"
-        mathjax += File.read(f, encoding: Encoding::UTF_8) + "\n"
-        mathjax += '</script>' + "\n"
-    end
-  else
-    js += '<script type="text/javascript">' + "\n"
-    js += File.read(f, encoding: Encoding::UTF_8) + "\n"
-    js += '</script>' + "\n"
-  end
-end
-js_bytes = js.unpack('C*')
-             .map { |b| format('0x%02X', b) }
-             .join(', ')
-             .gsub(/(?:0x\w{2},\s*){16}/, "\\0\n")
-             .gsub(/\s+\n/, "\n")
-mathjax_bytes = mathjax.unpack('C*')
-                       .map { |b| format('0x%02X', b) }
-                       .join(', ')
-                       .gsub(/(?:0x\w{2},\s*){16}/, "\\0\n")
-                       .gsub(/\s+\n/, "\n")
-mathjax_cfg_bytes = mathjax_cfg.unpack('C*')
-                               .map { |b| format('0x%02X', b) }
-                               .join(', ')
-                               .gsub(/(?:0x\w{2},\s*){16}/, "\\0\n")
-                               .gsub(/\s+\n/, "\n")
-
-css = ''
-Dir.glob(parent + '/assets/*.css').each do |f|
-  css += '<style type="text/css">' + "\n"
-  css += File.read(f, encoding: Encoding::UTF_8) + "\n"
-  css += '</style>' + "\n"
-end
-css_bytes = css.unpack('C*')
-               .map { |b| format('0x%02X', b) }
-               .join(', ')
-               .gsub(/((?:0x\w{2},\s*){16})/, "\\1\n")
-               .gsub(/\s+\n/, "\n")
-
-File.open(parent + '/assets.go', 'wb') do |f|
-  f.puts "package main
-
-var js_bytes = [...]byte{
-	#{js_bytes.gsub(/\n/, "\n\t")},
-}
-var mathjax_cfg_bytes = [...]byte{
-	#{mathjax_cfg_bytes.gsub(/\n/, "\n\t")},
-}
-var mathjax_bytes = [...]byte{
-	#{mathjax_bytes.gsub(/\n/, "\n\t")},
-}
-var css_bytes = [...]byte{
-	#{css_bytes.gsub(/\n/, "\n\t")},
-}"
-end