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-docker.js | 124 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 public/prism/prism-docker.js

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

diff --git a/public/prism/prism-docker.js b/public/prism/prism-docker.js
new file mode 100644
index 0000000..2468db1
--- /dev/null
+++ b/public/prism/prism-docker.js
@@ -0,0 +1,124 @@
+(function (Prism) {
+  // Many of the following regexes will contain negated lookaheads like `[ \t]+(?![ \t])`. This is a trick to ensure
+  // that quantifiers behave *atomically*. Atomic quantifiers are necessary to prevent exponential backtracking.
+
+  var spaceAfterBackSlash =
+    /\\[\r\n](?:\s|\\[\r\n]|#.*(?!.))*(?![\s#]|\\[\r\n])/.source;
+  // At least one space, comment, or line break
+  var space = /(?:[ \t]+(?![ \t])(?:<SP_BS>)?|<SP_BS>)/.source.replace(
+    /<SP_BS>/g,
+    function () {
+      return spaceAfterBackSlash;
+    }
+  );
+
+  var string =
+    /"(?:[^"\\\r\n]|\\(?:\r\n|[\s\S]))*"|'(?:[^'\\\r\n]|\\(?:\r\n|[\s\S]))*'/
+      .source;
+  var option = /--[\w-]+=(?:<STR>|(?!["'])(?:[^\s\\]|\\.)+)/.source.replace(
+    /<STR>/g,
+    function () {
+      return string;
+    }
+  );
+
+  var stringRule = {
+    pattern: RegExp(string),
+    greedy: true,
+  };
+  var commentRule = {
+    pattern: /(^[ \t]*)#.*/m,
+    lookbehind: true,
+    greedy: true,
+  };
+
+  /**
+   * @param {string} source
+   * @param {string} flags
+   * @returns {RegExp}
+   */
+  function re(source, flags) {
+    source = source
+      .replace(/<OPT>/g, function () {
+        return option;
+      })
+      .replace(/<SP>/g, function () {
+        return space;
+      });
+
+    return RegExp(source, flags);
+  }
+
+  Prism.languages.docker = {
+    instruction: {
+      pattern:
+        /(^[ \t]*)(?:ADD|ARG|CMD|COPY|ENTRYPOINT|ENV|EXPOSE|FROM|HEALTHCHECK|LABEL|MAINTAINER|ONBUILD|RUN|SHELL|STOPSIGNAL|USER|VOLUME|WORKDIR)(?=\s)(?:\\.|[^\r\n\\])*(?:\\$(?:\s|#.*$)*(?![\s#])(?:\\.|[^\r\n\\])*)*/im,
+      lookbehind: true,
+      greedy: true,
+      inside: {
+        options: {
+          pattern: re(
+            /(^(?:ONBUILD<SP>)?\w+<SP>)<OPT>(?:<SP><OPT>)*/.source,
+            'i'
+          ),
+          lookbehind: true,
+          greedy: true,
+          inside: {
+            property: {
+              pattern: /(^|\s)--[\w-]+/,
+              lookbehind: true,
+            },
+            string: [
+              stringRule,
+              {
+                pattern: /(=)(?!["'])(?:[^\s\\]|\\.)+/,
+                lookbehind: true,
+              },
+            ],
+            operator: /\\$/m,
+            punctuation: /=/,
+          },
+        },
+        keyword: [
+          {
+            // https://docs.docker.com/engine/reference/builder/#healthcheck
+            pattern: re(
+              /(^(?:ONBUILD<SP>)?HEALTHCHECK<SP>(?:<OPT><SP>)*)(?:CMD|NONE)\b/
+                .source,
+              'i'
+            ),
+            lookbehind: true,
+            greedy: true,
+          },
+          {
+            // https://docs.docker.com/engine/reference/builder/#from
+            pattern: re(
+              /(^(?:ONBUILD<SP>)?FROM<SP>(?:<OPT><SP>)*(?!--)[^ \t\\]+<SP>)AS/
+                .source,
+              'i'
+            ),
+            lookbehind: true,
+            greedy: true,
+          },
+          {
+            // https://docs.docker.com/engine/reference/builder/#onbuild
+            pattern: re(/(^ONBUILD<SP>)\w+/.source, 'i'),
+            lookbehind: true,
+            greedy: true,
+          },
+          {
+            pattern: /^\w+/,
+            greedy: true,
+          },
+        ],
+        comment: commentRule,
+        string: stringRule,
+        variable: /\$(?:\w+|\{[^{}"'\\]*\})/,
+        operator: /\\$/m,
+      },
+    },
+    comment: commentRule,
+  };
+
+  Prism.languages.dockerfile = Prism.languages.docker;
+})(Prism);
-- 
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