Ensure client-side translations are correctly extracted into the message templates.

web/pgadmin/static/js/gettext.js

@@ -0,0 +1,32 @@
+define(["translations"], function (translations) {
+
+  /***
+   * This method behaves as a drop-in replacement for flask translation rendering.
+   * It uses the same translation file under the hood and uses flask to determine the language.
+   *
+   * ex. translate("some %(adjective)s text", {adjective: "cool"})
+   *
+   * @param {String} text
+   * @param {Object} substitutions
+   */
+  return function gettext(text, substitutions) {
+
+    var rawTranslation = translations[text] ? translations[text] : text;
+
+    // captures things of the form %(substitutionName)s
+    var substitutionGroupsRegExp = /([^%]*)%\(([^\)]+)\)s(.*)/;
+    var matchFound;
+
+    var interpolated = rawTranslation;
+    do {
+      matchFound = false;
+      interpolated = interpolated.replace(substitutionGroupsRegExp, function (_, textBeginning, substitutionName, textEnd) {
+        matchFound = true;
+        return textBeginning + substitutions[substitutionName] + textEnd;
+      });
+    } while (matchFound);
+
+    return interpolated;
+  };
+
+});