1 files changed, 92 insertions, 0 deletions
diff --git a/framework/Web/Javascripts/base/util.js b/framework/Web/Javascripts/base/util.js
new file mode 100644
index 00000000..61b7d646
--- /dev/null
+++ b/framework/Web/Javascripts/base/util.js
@@ -0,0 +1,92 @@
+Prado.Util = {}
+
+/**
+ * Pad a number with zeros from the left.
+ * @param integer number
+ * @param integer total string length
+ * @return string zero  padded number
+ */
+Prado.Util.pad = function(number, X)
+{
+		X = (!X ? 2 : X);
+		number = ""+number;
+		while (number.length < X)
+			number = "0" + number;
+		return number;
+}
+
+/** 
+ * Convert a string into integer, returns null if not integer.
+ * @param {string} the string to convert to integer
+ * @type {integer|null} null if string does not represent an integer.
+ */
+Prado.Util.toInteger = function(value)
+{
+	var exp = /^\s*[-\+]?\d+\s*$/;
+	if (value.match(exp) == null)
+		return null;
+	var num = parseInt(value, 10);
+	return (isNaN(num) ? null : num);
+}
+
+/** 
+ * Convert a string into a double/float value. <b>Internationalization 
+ * is not supported</b>
+ * @param {string} the string to convert to double/float
+ * @param {string} the decimal character
+ * @return {float|null} null if string does not represent a float value
+ */
+Prado.Util.toDouble = function(value, decimalchar)
+{
+	decimalchar = undef(decimalchar) ? "." : decimalchar;
+	var exp = new RegExp("^\\s*([-\\+])?(\\d+)?(\\" + decimalchar + "(\\d+))?\\s*$");
+    var m = value.match(exp);
+    if (m == null)	
+		return null;
+	var cleanInput = m[1] + (m[2].length>0 ? m[2] : "0") + "." + m[4];
+    var num = parseFloat(cleanInput);
+    return (isNaN(num) ? null : num);
+}
+
+/**
+ * Convert strings that represent a currency value (e.g. a float with grouping 
+ * characters) to float. E.g. "10,000.50" will become "10000.50". The number 
+ * of dicimal digits, grouping and decimal characters can be specified.
+ * <i>The currency input format is <b>very</b> strict, null will be returned if
+ * the pattern does not match</i>.
+ * @param {string} the currency value
+ * @param {string} the grouping character, default is ","
+ * @param {int} number of decimal digits
+ * @param {string} the decimal character, default is "."
+ * @type {float|null} the currency value as float.
+ */
+Prado.Util.toCurrency = function(value, groupchar, digits, decimalchar)
+{
+	groupchar = undef(groupchar) ? "," : groupchar;
+	decimalchar = undef(decimalchar) ? "." : decimalchar;
+	digits = undef(digits) ? 2 : digits;
+
+	var exp = new RegExp("^\\s*([-\\+])?(((\\d+)\\" + groupchar + ")*)(\\d+)"
+		+ ((digits > 0) ? "(\\" + decimalchar + "(\\d{1," + digits + "}))?" : "")
+        + "\\s*$");
+	var m = value.match(exp);
+	if (m == null)
+		return null;
+	var intermed = m[2] + m[5] ;
+    var cleanInput = m[1] + intermed.replace(
+			new RegExp("(\\" + groupchar + ")", "g"), "") 
+							+ ((digits > 0) ? "." + m[7] : "");
+	var num = parseFloat(cleanInput);
+	return (isNaN(num) ? null : num);
+}
+
+/**
+ * Trim the value, if the value is undefined, empty string is return.
+ * @param {string} string to be trimmed.
+ * @type {string} trimmed string.
+ */
+Prado.Util.trim = function(value)
+{
+	if(!isString(value)) return "";
+	return value.replace(/^\s+|\s+$/g, "");
+}
+\ No newline at end of file