From a98b5ea6fe8e8cc98a55e0fd793e6e8660ea31c1 Mon Sep 17 00:00:00 2001
From: Armand Philippot <git@armandphilippot.com>
Date: Thu, 30 Dec 2021 19:47:21 +0100
Subject: chore: add prismjs for syntax highlighting

---
 public/prism/prism-pug.js | 201 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 201 insertions(+)
 create mode 100644 public/prism/prism-pug.js

(limited to 'public/prism/prism-pug.js')

diff --git a/public/prism/prism-pug.js b/public/prism/prism-pug.js
new file mode 100644
index 0000000..ff52414
--- /dev/null
+++ b/public/prism/prism-pug.js
@@ -0,0 +1,201 @@
+(function (Prism) {
+  // TODO:
+  // - Add CSS highlighting inside <style> tags
+  // - Add support for multi-line code blocks
+  // - Add support for interpolation #{} and !{}
+  // - Add support for tag interpolation #[]
+  // - Add explicit support for plain text using |
+  // - Add support for markup embedded in plain text
+
+  Prism.languages.pug = {
+    // Multiline stuff should appear before the rest
+
+    // This handles both single-line and multi-line comments
+    comment: {
+      pattern: /(^([\t ]*))\/\/.*(?:(?:\r?\n|\r)\2[\t ].+)*/m,
+      lookbehind: true,
+    },
+
+    // All the tag-related part is in lookbehind
+    // so that it can be highlighted by the "tag" pattern
+    'multiline-script': {
+      pattern:
+        /(^([\t ]*)script\b.*\.[\t ]*)(?:(?:\r?\n|\r(?!\n))(?:\2[\t ].+|\s*?(?=\r?\n|\r)))+/m,
+      lookbehind: true,
+      inside: Prism.languages.javascript,
+    },
+
+    // See at the end of the file for known filters
+    filter: {
+      pattern:
+        /(^([\t ]*)):.+(?:(?:\r?\n|\r(?!\n))(?:\2[\t ].+|\s*?(?=\r?\n|\r)))+/m,
+      lookbehind: true,
+      inside: {
+        'filter-name': {
+          pattern: /^:[\w-]+/,
+          alias: 'variable',
+        },
+        text: /\S[\s\S]*/,
+      },
+    },
+
+    'multiline-plain-text': {
+      pattern:
+        /(^([\t ]*)[\w\-#.]+\.[\t ]*)(?:(?:\r?\n|\r(?!\n))(?:\2[\t ].+|\s*?(?=\r?\n|\r)))+/m,
+      lookbehind: true,
+    },
+    markup: {
+      pattern: /(^[\t ]*)<.+/m,
+      lookbehind: true,
+      inside: Prism.languages.markup,
+    },
+    doctype: {
+      pattern: /((?:^|\n)[\t ]*)doctype(?: .+)?/,
+      lookbehind: true,
+    },
+
+    // This handle all conditional and loop keywords
+    'flow-control': {
+      pattern:
+        /(^[\t ]*)(?:case|default|each|else|if|unless|when|while)\b(?: .+)?/m,
+      lookbehind: true,
+      inside: {
+        each: {
+          pattern: /^each .+? in\b/,
+          inside: {
+            keyword: /\b(?:each|in)\b/,
+            punctuation: /,/,
+          },
+        },
+        branch: {
+          pattern: /^(?:case|default|else|if|unless|when|while)\b/,
+          alias: 'keyword',
+        },
+        rest: Prism.languages.javascript,
+      },
+    },
+    keyword: {
+      pattern: /(^[\t ]*)(?:append|block|extends|include|prepend)\b.+/m,
+      lookbehind: true,
+    },
+    mixin: [
+      // Declaration
+      {
+        pattern: /(^[\t ]*)mixin .+/m,
+        lookbehind: true,
+        inside: {
+          keyword: /^mixin/,
+          function: /\w+(?=\s*\(|\s*$)/,
+          punctuation: /[(),.]/,
+        },
+      },
+      // Usage
+      {
+        pattern: /(^[\t ]*)\+.+/m,
+        lookbehind: true,
+        inside: {
+          name: {
+            pattern: /^\+\w+/,
+            alias: 'function',
+          },
+          rest: Prism.languages.javascript,
+        },
+      },
+    ],
+    script: {
+      pattern: /(^[\t ]*script(?:(?:&[^(]+)?\([^)]+\))*[\t ]).+/m,
+      lookbehind: true,
+      inside: Prism.languages.javascript,
+    },
+
+    'plain-text': {
+      pattern:
+        /(^[\t ]*(?!-)[\w\-#.]*[\w\-](?:(?:&[^(]+)?\([^)]+\))*\/?[\t ]).+/m,
+      lookbehind: true,
+    },
+    tag: {
+      pattern: /(^[\t ]*)(?!-)[\w\-#.]*[\w\-](?:(?:&[^(]+)?\([^)]+\))*\/?:?/m,
+      lookbehind: true,
+      inside: {
+        attributes: [
+          {
+            pattern: /&[^(]+\([^)]+\)/,
+            inside: Prism.languages.javascript,
+          },
+          {
+            pattern: /\([^)]+\)/,
+            inside: {
+              'attr-value': {
+                pattern: /(=\s*(?!\s))(?:\{[^}]*\}|[^,)\r\n]+)/,
+                lookbehind: true,
+                inside: Prism.languages.javascript,
+              },
+              'attr-name': /[\w-]+(?=\s*!?=|\s*[,)])/,
+              punctuation: /[!=(),]+/,
+            },
+          },
+        ],
+        punctuation: /:/,
+        'attr-id': /#[\w\-]+/,
+        'attr-class': /\.[\w\-]+/,
+      },
+    },
+    code: [
+      {
+        pattern: /(^[\t ]*(?:-|!?=)).+/m,
+        lookbehind: true,
+        inside: Prism.languages.javascript,
+      },
+    ],
+    punctuation: /[.\-!=|]+/,
+  };
+
+  var filter_pattern =
+    /(^([\t ]*)):<filter_name>(?:(?:\r?\n|\r(?!\n))(?:\2[\t ].+|\s*?(?=\r?\n|\r)))+/
+      .source;
+
+  // Non exhaustive list of available filters and associated languages
+  var filters = [
+    { filter: 'atpl', language: 'twig' },
+    { filter: 'coffee', language: 'coffeescript' },
+    'ejs',
+    'handlebars',
+    'less',
+    'livescript',
+    'markdown',
+    { filter: 'sass', language: 'scss' },
+    'stylus',
+  ];
+  var all_filters = {};
+  for (var i = 0, l = filters.length; i < l; i++) {
+    var filter = filters[i];
+    filter =
+      typeof filter === 'string'
+        ? { filter: filter, language: filter }
+        : filter;
+    if (Prism.languages[filter.language]) {
+      all_filters['filter-' + filter.filter] = {
+        pattern: RegExp(
+          filter_pattern.replace('<filter_name>', function () {
+            return filter.filter;
+          }),
+          'm'
+        ),
+        lookbehind: true,
+        inside: {
+          'filter-name': {
+            pattern: /^:[\w-]+/,
+            alias: 'variable',
+          },
+          text: {
+            pattern: /\S[\s\S]*/,
+            alias: [filter.language, 'language-' + filter.language],
+            inside: Prism.languages[filter.language],
+          },
+        },
+      };
+    }
+  }
+
+  Prism.languages.insertBefore('pug', 'filter', all_filters);
+})(Prism);
-- 
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