Replace a script for generating assetes.go

assetes.go.rb -> assetes.go.js

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);
+  }
+});
+