Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/filter/currency.dart

Index: third_party/pkg/angular/lib/filter/currency.dart
diff --git a/third_party/pkg/angular/lib/filter/currency.dart b/third_party/pkg/angular/lib/filter/currency.dart
new file mode 100644
index 0000000000000000000000000000000000000000..459fe34e35a9f2d35fc05211ae45add492607e5d
--- /dev/null
+++ b/third_party/pkg/angular/lib/filter/currency.dart
@@ -0,0 +1,44 @@
+part of angular.filter;
+
+/**
+ * Formats a number as a currency (ie $1,234.56). When no currency symbol is
+ * provided, '$' used.
+ *
+ *
+ * Usage:
+ *
+ *     {{ number_expression | number[:fractionSize] }}
+ *
+ */
+@NgFilter(name:'currency')
+class CurrencyFilter {
+
+  NumberFormat nf = new NumberFormat();
+
+  CurrencyFilter() {
+    nf.minimumFractionDigits = 2;
+    nf.maximumFractionDigits = 2;
+  }
+
+  /**
+   *  [value]: the value to format
+   *
+   *  [symbol]: Symbol to use.
+   *
+   *  [leading]: Symbol should be placed in front of the number
+   */
+  call(value, [symbol = r'$', leading = true]) {
+    if (value is String) value = double.parse(value);
+    if (!(value is num)) return value;
+    if (value.isNaN) return '';
+    var neg = value < 0;
+    if (neg) value = -value;
+    var before = neg ? '(' : '';
+    var after = neg ? ')' : '';
+    if (leading) {
+      return '$before$symbol${nf.format(value)}$after';
+    } else {
+      return '$before${nf.format(value)}$symbol$after';
+    }
+  }
+}