feat: add exclude_languages feature to prismjs (hexojs#5182)

* feat: add exclude_languages feature to prismjs * feat: add exclude_languages feature to prismjs
uiolee · Apr 20, 2023 · 8251df3 · 8251df3
1 parent 46fbdcf
commit 8251df3
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Showing 3 changed files with 21 additions and 1 deletion.
diff --git a/lib/hexo/default_config.ts b/lib/hexo/default_config.ts
@@ -51,7 +51,8 @@ export = {
   prismjs: {
     preprocess: true,
     line_number: true,
-    tab_replace: ''
+    tab_replace: '',
+    exclude_languages: []
   },
   // Category & Tag
   default_category: 'uncategorized',

diff --git a/lib/plugins/highlight/prism.ts b/lib/plugins/highlight/prism.ts
@@ -20,5 +20,9 @@ module.exports = function(code, options) {
 
   if (!prismHighlight) prismHighlight = require('hexo-util').prismHighlight;
 
+  if (Array.isArray(prismjsCfg.exclude_languages) && prismjsCfg.exclude_languages.includes(prismjsOptions.lang)) {
+    // Only wrap with <pre><code class="lang"></code></pre>
+    return `<pre><code class="${prismjsOptions.lang}">${require('hexo-util').escapeHTML(code)}</code></pre>`;
+  }
   return prismHighlight(code, prismjsOptions);
 };
diff --git a/test/scripts/filters/backtick_code_block.js b/test/scripts/filters/backtick_code_block.js
@@ -635,5 +635,20 @@ describe('Backtick code block', () => {
       codeBlock(data);
       data.content.should.eql('<hexoPostRenderCodeBlock>' + expected + '</hexoPostRenderCodeBlock>');
     });
+
+    it('prism only wrap with pre and code', () => {
+      hexo.config.prismjs.exclude_languages = ['js'];
+      const data = {
+        content: [
+          '``` js',
+          code,
+          '```'
+        ].join('\n')
+      };
+      const escapeSwigTag = str => str.replace(/{/g, '&#123;').replace(/}/g, '&#125;');
+      const expected = `<pre><code class="js">${escapeSwigTag(util.escapeHTML(code))}</code></pre>`;
+      codeBlock(data);
+      data.content.should.eql('<hexoPostRenderCodeBlock>' + expected + '</hexoPostRenderCodeBlock>');
+    });
   });
 });