Include additional themes for prism

.github/support.yml

@@ -8,7 +8,7 @@ supportLabel: Support
 supportComment: >
   :wave: @{issue-author}, we use the issue tracker exclusively for bug reports
   and feature requests. However, this issue appears to be a support request.
-  Please use our [support channels](https://github.com/next-theme/hexo-theme-next/tree/master#feedback) to get help with the project.
+  Please use our [support channels](https://github.com/next-theme/hexo-theme-next#feedback) to get help with the project.
 
 # Close issues marked as support requests
 close: true

_config.yml

@@ -346,11 +346,10 @@ custom_logo: #/uploads/custom-logo.jpg
 
 codeblock:
   # Code Highlight theme
-  # See: https://github.com/highlightjs/highlight.js/tree/master/src/styles
+  # All available themes: https://theme-next.js.org/highlight/
   theme:
     light: default
     dark: tomorrow-night
-  # See: https://github.com/PrismJS/prism/tree/master/themes
   prism:
     light: prism
     dark: prism-dark
@@ -817,7 +816,7 @@ motion:
   enable: true
   async: false
   transition:
-    # All available Transition variants: https://theme-next.js.org/animate/
+    # All available transition variants: https://theme-next.js.org/animate/
     post_block: fadeIn
     post_header: fadeInDown
     post_body: fadeInDown

scripts/events/index.js

@@ -2,14 +2,14 @@
 
 'use strict';
 
-hexo.on('generateBefore', () => {
+hexo.extend.filter.register('before_generate', () => {
   // Merge config.
   require('./lib/config')(hexo);
   // Add filter type `theme_inject`
   require('./lib/injects')(hexo);
   // Highlight
   require('./lib/highlight')(hexo);
-});
+}, 0);
 
 hexo.on('ready', () => {
   const { version } = require('../../package.json');

scripts/events/lib/highlight.js

@@ -1,6 +1,12 @@
 const fs = require('fs');
+const path = require('path');
 
-function parse(file) {
+function resolve(package) {
+  return path.dirname(require.resolve(`${package}/package.json`));
+}
+
+function highlightTheme(name) {
+  let file = `${resolve('highlight.js')}/styles/${name}.css`;
   let css = fs.readFileSync(file).toString();
   let rule = '';
   let background = '';
@@ -21,20 +27,26 @@ function parse(file) {
   };
 }
 
+function prismTheme(name) {
+  let file = `${resolve('prismjs')}/themes/${name}.css`;
+  if (!fs.existsSync(file)) file = `${resolve('prism-themes')}/themes/${name}.css`;
+  return file;
+}
+
 module.exports = hexo => {
   let { config } = hexo;
   let theme = hexo.theme.config;
   config.highlight.hljs = false;
   config.prismjs = config.prismjs || {};
   theme.highlight = {
     enable: config.highlight.enable && !config.prismjs.enable,
-    light : parse(`${hexo.plugin_dir}highlight.js/styles/${theme.codeblock.theme.light}.css`),
-    dark  : parse(`${hexo.plugin_dir}highlight.js/styles/${theme.codeblock.theme.dark}.css`)
+    light : highlightTheme(theme.codeblock.theme.light),
+    dark  : highlightTheme(theme.codeblock.theme.dark)
   };
   theme.prism = {
     enable: config.prismjs.enable,
-    light : `${hexo.plugin_dir}prismjs/themes/${theme.codeblock.prism.light}.css`,
-    dark  : `${hexo.plugin_dir}prismjs/themes/${theme.codeblock.prism.dark}.css`,
-    number: `${hexo.plugin_dir}prismjs/plugins/line-numbers/prism-line-numbers.css`
+    light : prismTheme(theme.codeblock.prism.light),
+    dark  : prismTheme(theme.codeblock.prism.dark),
+    number: `${resolve('prismjs')}/plugins/line-numbers/prism-line-numbers.css`
   };
 };