1 files changed, 65 insertions, 0 deletions
diff --git a/lib/wallet/helpers.ts b/lib/wallet/helpers.ts
new file mode 100644
index 000000000..99913e558
--- /dev/null
+++ b/lib/wallet/helpers.ts
@@ -0,0 +1,65 @@
+/*
+ This file is part of TALER
+ (C) 2016 GNUnet e.V.
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+ */
+
+
+/**
+ * Smaller helper functions that do not depend
+ * on the emscripten machinery.
+ */
+
+import {AmountJson} from "./types";
+
+export function substituteFulfillmentUrl(url: string, vars) {
+  url = url.replace("${H_contract}", vars.H_contract);
+  url = url.replace("${$}", "$");
+  return url;
+}
+
+
+export function amountToPretty(amount: AmountJson): string {
+  let x = amount.value + amount.fraction / 1e6;
+  return `${x} ${amount.currency}`;
+}
+
+
+/**
+ * Canonicalize a base url, typically for the mint.
+ *
+ * See http://api.taler.net/wallet.html#general
+ */
+export function canonicalizeBaseUrl(url) {
+  let x = new URI(url);
+  if (!x.protocol()) {
+    x.protocol("https");
+  }
+  x.path(x.path() + "/").normalizePath();
+  x.fragment();
+  x.query();
+  return x.href()
+}
+
+
+export function parsePrettyAmount(pretty: string): AmountJson {
+  const res = /([0-9]+)(.[0-9]+)?\s*(\w+)/.exec(pretty);
+  if (!res) {
+    return null;
+  }
+  return {
+    value: parseInt(res[1], 10),
+    fraction: res[2] ? (parseFloat(`0.${res[2]}`) * 1e-6) : 0,
+    currency: res[3]
+  }
+}
+\ No newline at end of file