DB structure, emscripten interface

1 files changed, 91 insertions, 0 deletions

diff --git a/extension/lib/util.js b/extension/lib/util.js
new file mode 100644
index 000000000..9d83f7e74
--- /dev/null
+++ b/extension/lib/util.js
@@ -0,0 +1,91 @@
+'use strict';
+
+/**
+ * Format amount as String.
+ *
+ * @param amount
+ *        Amount to be formatted.
+ *
+ * @return String, e.g. "1.23"
+ */
+function amount_format (amount)
+{
+  let separator = "." // FIXME: depends on locale
+  return amount.value + separator + amount.fraction.toString().replace(/0+$/, "");
+}
+
+
+/**
+ * Format amount with currency as String.
+ *
+ * @param amount
+ *        Amount to be formatted.
+ *
+ * @return String, e.g. "1.23 EUR"
+ */
+function amount_format_currency (amount)
+{
+  return amount_format(amount) + " " + amount.currency;
+}
+
+
+/**
+ * Convert Date to String.
+ *
+ * Format: YYYY-MM-DD HH:mm
+ *
+ * @param date
+ *        Date to be converted.
+ *
+ * @return String
+ */
+function date_format (date)
+{
+  function pad (number) {
+    if (number < 10) {
+      return '0' + number;
+    }
+    return number;
+  }
+
+  return date.getUTCFullYear() +
+    '-' + pad(date.getUTCMonth() + 1) +
+    '-' + pad(date.getUTCDate()) +
+    ' ' + pad(date.getUTCHours()) +
+    ':' + pad(date.getUTCMinutes());
+  //':' + pad(date.getUTCSeconds());
+}
+
+
+/**
+ * Send HTTP request.
+ *
+ * @param method
+ *        HTTP method.
+ * @param url
+ *        URL to send to.
+ * @param content
+ *        Content of request.
+ * @param content_type
+ *        Content-Type HTTP header.
+ * @param onsuccess
+ *        Function called by XMLHttpRequest on success.
+ * @param onerror
+ *        Function called by XMLHttpRequest on error.
+ *
+ */
+function http_req (method, url, content, content_type, onsuccess, onerror) {
+  var req = new XMLHttpRequest();
+
+  req.onload = function(mintEvt) {
+    if (req.readyState == 4)
+      onsuccess(req.status, req.responseText);
+  };
+
+  req.onerror = onerror;
+  req.open(method, url, true);
+  req.setRequestHeader('Content-Type', content_type);
+  req.send(content);
+
+  return req;
+}