1 files changed, 34 insertions, 0 deletions
diff --git a/extension/lib/util.ts b/extension/lib/util.ts
new file mode 100644
index 000000000..106e22970
--- /dev/null
+++ b/extension/lib/util.ts
@@ -0,0 +1,34 @@
+'use strict';
+
+/**
+ * Parse an amount that is specified like '5.42 EUR'.
+ * Returns a {currency,value,fraction} object or null
+ * if the input is invalid.
+ */
+function amount_parse_pretty(s) {
+  let pattern = /(\d+)(.\d+)?\s*([a-zA-Z]+)/;
+  let matches = pattern.exec(s);
+  if (null == matches) {
+    return null;
+  }
+  return {
+    // Always succeeds due to regex
+    value: parseInt(matches[1]),
+    // Should we warn / fail on lost precision?
+    fraction: Math.round(parseFloat(matches[2] || "0") * 1000000),
+    currency: matches[3],
+  };
+}
+
+
+function format(s: string, ...args: any[]) {
+  function r(m, n) {
+    let i = parseInt(n);
+    return args[i];
+  }
+  s = s.replace(/{{/g, '{');
+  s = s.replace(/}}/g, '}');
+  s = s.replace(/{([0-9]+)}/g, r);
+  return s;
+}
+