chore: add prismjs for syntax highlighting

1 files changed, 86 insertions, 0 deletions

diff --git a/public/prism/prism-c.js b/public/prism/prism-c.js
new file mode 100644
index 0000000..39cc673
--- /dev/null
+++ b/public/prism/prism-c.js
@@ -0,0 +1,86 @@
+Prism.languages.c = Prism.languages.extend('clike', {
+  comment: {
+    pattern:
+      /\/\/(?:[^\r\n\\]|\\(?:\r\n?|\n|(?![\r\n])))*|\/\*[\s\S]*?(?:\*\/|$)/,
+    greedy: true,
+  },
+  string: {
+    // https://en.cppreference.com/w/c/language/string_literal
+    pattern: /"(?:\\(?:\r\n|[\s\S])|[^"\\\r\n])*"/,
+    greedy: true,
+  },
+  'class-name': {
+    pattern:
+      /(\b(?:enum|struct)\s+(?:__attribute__\s*\(\([\s\S]*?\)\)\s*)?)\w+|\b[a-z]\w*_t\b/,
+    lookbehind: true,
+  },
+  keyword:
+    /\b(?:_Alignas|_Alignof|_Atomic|_Bool|_Complex|_Generic|_Imaginary|_Noreturn|_Static_assert|_Thread_local|__attribute__|asm|auto|break|case|char|const|continue|default|do|double|else|enum|extern|float|for|goto|if|inline|int|long|register|return|short|signed|sizeof|static|struct|switch|typedef|typeof|union|unsigned|void|volatile|while)\b/,
+  function: /\b[a-z_]\w*(?=\s*\()/i,
+  number:
+    /(?:\b0x(?:[\da-f]+(?:\.[\da-f]*)?|\.[\da-f]+)(?:p[+-]?\d+)?|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e[+-]?\d+)?)[ful]{0,4}/i,
+  operator: />>=?|<<=?|->|([-+&|:])\1|[?:~]|[-+*/%&|^!=<>]=?/,
+});
+
+Prism.languages.insertBefore('c', 'string', {
+  char: {
+    // https://en.cppreference.com/w/c/language/character_constant
+    pattern: /'(?:\\(?:\r\n|[\s\S])|[^'\\\r\n]){0,32}'/,
+    greedy: true,
+  },
+});
+
+Prism.languages.insertBefore('c', 'string', {
+  macro: {
+    // allow for multiline macro definitions
+    // spaces after the # character compile fine with gcc
+    pattern:
+      /(^[\t ]*)#\s*[a-z](?:[^\r\n\\/]|\/(?!\*)|\/\*(?:[^*]|\*(?!\/))*\*\/|\\(?:\r\n|[\s\S]))*/im,
+    lookbehind: true,
+    greedy: true,
+    alias: 'property',
+    inside: {
+      string: [
+        {
+          // highlight the path of the include statement as a string
+          pattern: /^(#\s*include\s*)<[^>]+>/,
+          lookbehind: true,
+        },
+        Prism.languages.c['string'],
+      ],
+      char: Prism.languages.c['char'],
+      comment: Prism.languages.c['comment'],
+      'macro-name': [
+        {
+          pattern: /(^#\s*define\s+)\w+\b(?!\()/i,
+          lookbehind: true,
+        },
+        {
+          pattern: /(^#\s*define\s+)\w+\b(?=\()/i,
+          lookbehind: true,
+          alias: 'function',
+        },
+      ],
+      // highlight macro directives as keywords
+      directive: {
+        pattern: /^(#\s*)[a-z]+/,
+        lookbehind: true,
+        alias: 'keyword',
+      },
+      'directive-hash': /^#/,
+      punctuation: /##|\\(?=[\r\n])/,
+      expression: {
+        pattern: /\S[\s\S]*/,
+        inside: Prism.languages.c,
+      },
+    },
+  },
+});
+
+Prism.languages.insertBefore('c', 'function', {
+  // highlight predefined macros as constants
+  constant:
+    /\b(?:EOF|NULL|SEEK_CUR|SEEK_END|SEEK_SET|__DATE__|__FILE__|__LINE__|__TIMESTAMP__|__TIME__|__func__|stderr|stdin|stdout)\b/,
+});
+
+delete Prism.languages.c['boolean'];