chore: add prismjs for syntax highlighting

1 files changed, 69 insertions, 0 deletions

diff --git a/public/prism/prism-excel-formula.js b/public/prism/prism-excel-formula.js
new file mode 100644
index 0000000..1338efe
--- /dev/null
+++ b/public/prism/prism-excel-formula.js
@@ -0,0 +1,69 @@
+Prism.languages['excel-formula'] = {
+  comment: {
+    pattern: /(\bN\(\s*)"(?:[^"]|"")*"(?=\s*\))/i,
+    lookbehind: true,
+    greedy: true,
+  },
+  string: {
+    pattern: /"(?:[^"]|"")*"(?!")/,
+    greedy: true,
+  },
+  reference: {
+    // https://www.ablebits.com/office-addins-blog/2015/12/08/excel-reference-another-sheet-workbook/
+
+    // Sales!B2
+    // 'Winter sales'!B2
+    // [Sales.xlsx]Jan!B2:B5
+    // D:\Reports\[Sales.xlsx]Jan!B2:B5
+    // '[Sales.xlsx]Jan sales'!B2:B5
+    // 'D:\Reports\[Sales.xlsx]Jan sales'!B2:B5
+
+    pattern:
+      /(?:'[^']*'|(?:[^\s()[\]{}<>*?"';,$&]*\[[^^\s()[\]{}<>*?"']+\])?\w+)!/,
+    greedy: true,
+    alias: 'string',
+    inside: {
+      operator: /!$/,
+      punctuation: /'/,
+      sheet: {
+        pattern: /[^[\]]+$/,
+        alias: 'function',
+      },
+      file: {
+        pattern: /\[[^[\]]+\]$/,
+        inside: {
+          punctuation: /[[\]]/,
+        },
+      },
+      path: /[\s\S]+/,
+    },
+  },
+  'function-name': {
+    pattern: /\b[A-Z]\w*(?=\()/i,
+    alias: 'keyword',
+  },
+  range: {
+    pattern:
+      /\$?\b(?:[A-Z]+\$?\d+:\$?[A-Z]+\$?\d+|[A-Z]+:\$?[A-Z]+|\d+:\$?\d+)\b/i,
+    alias: 'property',
+    inside: {
+      operator: /:/,
+      cell: /\$?[A-Z]+\$?\d+/i,
+      column: /\$?[A-Z]+/i,
+      row: /\$?\d+/,
+    },
+  },
+  cell: {
+    // Excel is case insensitive, so the string "foo1" could be either a variable or a cell.
+    // To combat this, we match cells case insensitive, if the contain at least one "$", and case sensitive otherwise.
+    pattern: /\b[A-Z]+\d+\b|\$[A-Za-z]+\$?\d+\b|\b[A-Za-z]+\$\d+\b/,
+    alias: 'property',
+  },
+  number: /(?:\b\d+(?:\.\d+)?|\B\.\d+)(?:e[+-]?\d+)?\b/i,
+  boolean: /\b(?:FALSE|TRUE)\b/i,
+  operator: /[-+*/^%=&,]|<[=>]?|>=?/,
+  punctuation: /[[\]();{}|]/,
+};
+
+Prism.languages['xlsx'] = Prism.languages['xls'] =
+  Prism.languages['excel-formula'];