using System;
using System.Linq;
using System.Xml.Linq;
namespace DACU.Tools
{
static class XmlUtils
{
public static bool? NodeValueToBool(XElement node)
{
if (node == null) return null;
return node.Value == "1" ? (bool?)true : (node.Value == "0" ? (bool?)false : null);
}
public static int[] NodeValueToArray(XElement node)
{
if (node == null || node.IsEmpty) return null;
var ints = node.Elements("lid");
return ints == null ?
null
:
ints.Where(elem => !String.IsNullOrWhiteSpace(elem.Value)).Select(elem => Convert.ToInt32(elem.Value)).ToArray();
}
public static string GetStringFromAttribute(this XElement element, string attributeName)
{
XAttribute att = element.Attribute(attributeName);
return att == null || att.Value == null ? "" : att.Value;
}
public static int GetIntFromAttribute(this XElement element, string attributeName)
{
XAttribute att = element.Attribute(attributeName);
if (att == null) return -1;
int value;
if (int.TryParse(att.Value, out value))
return value;
return -1;
}
public static double GetDoubleFromAttribute(this XElement element, string attributeName)
{
XAttribute att = element.Attribute(attributeName);
if (att == null) return double.NaN;
double value;
if (double.TryParse(att.Value, out value))
return value;
return double.NaN;
}
public static float GetFloatFromAttribute(this XElement element, string attributeName)
{
XAttribute att = element.Attribute(attributeName);
if (att == null) return float.NaN;
float value;
if (float.TryParse(att.Value, out value))
return value;
return float.NaN;
}
public static bool GetBoolFromAttribute(this XElement element, string attributeName)
{
XAttribute att = element.Attribute(attributeName);
if (att == null) return false;
bool value;
if (bool.TryParse(att.Value, out value))
return value;
return false;
}
}
}
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