feat(tag/code): add language_attr option (hexojs/hexo-util#278)

lib/hexo/default_config.js

@@ -47,6 +47,7 @@ module.exports = {
  tab_replace: '',
  wrap: true,
  exclude_languages: [],
+ language_attr: false,
  hljs: false
  },
  prismjs: {

lib/plugins/filter/before_post_render/backtick_code_block.js

@@ -73,6 +73,7 @@ function backtickCodeBlock(data) {
  tab: hljsCfg.tab_replace,
  wrap: hljsCfg.wrap,
  lang,
+ languageAttr: hljsCfg.language_attr,
  caption
  };
 

lib/plugins/tag/code.js

@@ -33,7 +33,7 @@ const rCaption = /\S[\S\s]*/;
 function parseArgs(args) {
  const _else = [];
  const len = args.length;
- let lang,
+ let lang, language_attr,
  line_number, line_threshold, wrap;
  let firstLine = 1;
  const mark = [];
@@ -85,6 +85,10 @@ function parseArgs(args) {
  }
  break;
  }
+ case 'language_attr': {
+ language_attr = value === 'true';
+ break;
+ }
  default: {
  _else.push(args[i]);
  }
@@ -105,6 +109,7 @@ function parseArgs(args) {
 
  return {
  lang,
+ language_attr,
  firstLine,
  caption,
  line_number,
@@ -138,7 +143,7 @@ module.exports = ctx => function codeTag(args, content) {
  return `<pre><code>${escapeHTML(content)}</code></pre>`;
  }
 
- const { lang, firstLine, caption, line_number, line_threshold, mark, wrap } = parseArgs(args);
+ const { lang, language_attr, firstLine, caption, line_number, line_threshold, mark, wrap } = parseArgs(args);
 
  if (prismjsCfg.enable) {
  const shouldUseLineNumbers = typeof line_number !== 'undefined' ? line_number : prismjsCfg.line_number;
@@ -185,7 +190,8 @@ module.exports = ctx => function codeTag(args, content) {
  mark,
  tab: hljsCfg.tab_replace,
  autoDetect: hljsCfg.auto_detect,
- wrap: typeof wrap === 'boolean' ? wrap : hljsCfg.wrap
+ wrap: typeof wrap === 'boolean' ? wrap : hljsCfg.wrap,
+ languageAttr: typeof language_attr === 'boolean' ? language_attr : hljsCfg.language_attr
  };
 
  if (!highlight) highlight = require('hexo-util').highlight;

lib/plugins/tag/include_code.js

@@ -89,6 +89,7 @@ module.exports = ctx => function includeCodeTag(args) {
 
  const hljsOptions = {
  lang,
+ languageAttr: hljsCfg.language_attr,
  caption,
  gutter: hljsCfg.line_number && lines.length > line_threshold,
  hljs: hljsCfg.hljs,

test/scripts/tags/code.js

@@ -173,6 +173,14 @@ describe('code', () => {
  wrap: true
  }));
  });
+
+ it('language_attr', () => {
+ const result = code('lang:js language_attr:true', fixture);
+ result.should.eql(highlight(fixture, {
+ lang: 'js',
+ languageAttr: true
+ }));
+ });
  });
 
  describe('prismjs', () => {

test/scripts/tags/include_code.js

@@ -62,6 +62,22 @@ describe('include_code', () => {
  result.should.eql(expected);
  });
 
+ it('language_attr', async () => {
+ const original = hexo.config.highlight.language_attr;
+ hexo.config.highlight.language_attr = true;
+
+ const expected = highlight(fixture, {
+ lang: 'js',
+ caption: '<span>Hello world</span><a href="/downloads/code/test.js">view raw</a>',
+ languageAttr: true
+ });
+
+ const result = await code('Hello world lang:js test.js');
+ result.should.eql(expected);
+
+ hexo.config.highlight.language_attr = original;
+ });
+
  it('from', async () => {
  const fixture = [
  '}'