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// *************************************************************************************************************************************************
// Libreria de scripts de Javascript
// Autor: José Manuel Alonso (E.T.S.I.I.) Universidad de Sevilla
// Fecha Creación:2003-2004
// Fecha Última modificación: Noviembre-2005
// Nombre del fichero: cadenas.js
// Descripción :
// Este fichero implementa funciones de uso común para cadenas
// *************************************************************************************************************************************************
function TrimLeft( str ) {
var resultStr = "";
var i = len = 0;
if (str+"" == "undefined" || str == null) return null;
str += "";
if (str.length == 0)
resultStr = "";
else {
len = str.length;
while ((i <= len) && (str.charAt(i) == " ")) i++;
resultStr = str.substring(i, len);
}
return resultStr;
}
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
function TrimRight( str ) {
var resultStr = "";
var i = 0;
if (str+"" == "undefined" || str == null) return null;
str += "";
if (str.length == 0)
resultStr = "";
else {
i = str.length - 1;
while ((i >= 0) && (str.charAt(i) == " ")) i--;
resultStr = str.substring(0, i + 1);
}
return resultStr;
}
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
function Trim( str ) {
var resultStr = "";
resultStr = TrimLeft(str);
resultStr = TrimRight(resultStr);
return resultStr;
}
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