[#586] Added query language parser

frontend/src/common/parseQuery.ts

@@ -0,0 +1,32 @@
+/**
+ * @param query Search query to parse
+ */
+export default function parseQuery(query: string) {
+
+  // Regularize white spacing
+  // Make in-between white spaces a unique space
+  query = query.trim().replace(/s+/g, ' ');
+
+  // https://regex101.com/r/wT6zG3/2
+  const regex = /(-)?(?:(\S+):)?(?:'((?:[^'\\]|\\.)*)'|"((?:[^"\\]|\\.)*)"|(\S+))/g;
+  let term;
+  let terms = {};
+
+  while((term = regex.exec(query)) !== null) {
+    if (term !== regex.lastIndex) {
+      regex.lastIndex++;
+    }
+
+    const key = (term[2] || 'text').toLowerCase();
+
+    terms[key] = terms[key] || [];
+
+    terms[key].push({
+      n: term[1] === '-',
+      s: term[3] || term[4] || term[5]
+    });
+  }
+
+  return terms;
+
+}