// $Id: Datatype.cs,v 1.4 2003/09/29 23:24:21 jderoo Exp $
// PxButton | build | csc /o /doc:Euler.xml *.cs |

using System;
using System.Collections;
using System.Xml;

class Datatype {
  internal const String XSD = "<http://www.w3.org/2001/XMLSchema#";
  internal const String XSDID = "<http://www.w3.org/2001/XMLSchema#ID>";
  internal const String XSDIDREF = "<http://www.w3.org/2001/XMLSchema#IDREF>";
  internal const String XSDNCName = "<http://www.w3.org/2001/XMLSchema#NCName>";
  internal const String XSDNMTOKEN = "<http://www.w3.org/2001/XMLSchema#NMTOKEN>";
  internal const String XSDName = "<http://www.w3.org/2001/XMLSchema#Name>";
  internal const String XSDanyURI = "<http://www.w3.org/2001/XMLSchema#anyURI>";
  internal const String XSDbase64Binary = "<http://www.w3.org/2001/XMLSchema#base64Binary>";
  internal const String XSDboolean = "<http://www.w3.org/2001/XMLSchema#boolean>";
  internal const String XSDbyte = "<http://www.w3.org/2001/XMLSchema#byte>";
  internal const String XSDdate = "<http://www.w3.org/2001/XMLSchema#date>";
  internal const String XSDdateTime = "<http://www.w3.org/2001/XMLSchema#dateTime>";
  internal const String XSDdecimal = "<http://www.w3.org/2001/XMLSchema#decimal>";
  internal const String XSDdouble = "<http://www.w3.org/2001/XMLSchema#double>";
  internal const String XSDduration = "<http://www.w3.org/2001/XMLSchema#duration>";
  internal const String XSDfloat = "<http://www.w3.org/2001/XMLSchema#float>";
  internal const String XSDgDay = "<http://www.w3.org/2001/XMLSchema#gDay>";
  internal const String XSDgMonth = "<http://www.w3.org/2001/XMLSchema#gMonth>";
  internal const String XSDgMonthDay = "<http://www.w3.org/2001/XMLSchema#gMonthDay>";
  internal const String XSDgYear = "<http://www.w3.org/2001/XMLSchema#gYear>";
  internal const String XSDgYearMonth = "<http://www.w3.org/2001/XMLSchema#gYearMonth>";
  internal const String XSDhexBinary = "<http://www.w3.org/2001/XMLSchema#hexBinary>";
  internal const String XSDint = "<http://www.w3.org/2001/XMLSchema#int>";
  internal const String XSDinteger = "<http://www.w3.org/2001/XMLSchema#integer>";
  internal const String XSDlanguage = "<http://www.w3.org/2001/XMLSchema#language>";
  internal const String XSDlong = "<http://www.w3.org/2001/XMLSchema#long>";
  internal const String XSDnegativeInteger = "<http://www.w3.org/2001/XMLSchema#negativeInteger>";
  internal const String XSDnonNegativeInteger = "<http://www.w3.org/2001/XMLSchema#nonNegativeInteger>";
  internal const String XSDnonPositiveInteger = "<http://www.w3.org/2001/XMLSchema#nonPositiveInteger>";
  internal const String XSDnormalizedString = "<http://www.w3.org/2001/XMLSchema#normalizedString>";
  internal const String XSDpositiveInteger = "<http://www.w3.org/2001/XMLSchema#positiveInteger>";
  internal const String XSDshort = "<http://www.w3.org/2001/XMLSchema#short>";
  internal const String XSDstring = "<http://www.w3.org/2001/XMLSchema#string>";
  internal const String XSDtime = "<http://www.w3.org/2001/XMLSchema#time>";
  internal const String XSDtoken = "<http://www.w3.org/2001/XMLSchema#token>";
  internal const String XSDunsignedByte = "<http://www.w3.org/2001/XMLSchema#unsignedByte>";
  internal const String XSDunsignedInt = "<http://www.w3.org/2001/XMLSchema#unsignedInt>";
  internal const String XSDunsignedLong = "<http://www.w3.org/2001/XMLSchema#unsignedLong>";
  internal const String XSDunsignedShort = "<http://www.w3.org/2001/XMLSchema#unsignedShort>";

  internal static Hashtable num = null;

  internal static bool IsNumeric(String dt) {
    if (num == null) {
      num = new Hashtable();
      num[XSDbyte] = new Object();
      num[XSDdecimal] = new Object();
      num[XSDdouble] = new Object();
      num[XSDfloat] = new Object();
      num[XSDint] = new Object();
      num[XSDinteger] = new Object();
      num[XSDlong] = new Object();
      num[XSDnegativeInteger] = new Object();
      num[XSDnonNegativeInteger] = new Object();
      num[XSDnonPositiveInteger] = new Object();
      num[XSDpositiveInteger] = new Object();
      num[XSDshort] = new Object();
      num[XSDunsignedByte] = new Object();
      num[XSDunsignedInt] = new Object();
      num[XSDunsignedLong] = new Object();
      num[XSDunsignedShort] = new Object();
    }
    return num[dt] != null;
  }

  internal static int Compare(String dt1, String s1, String dt2, String s2) {
    String dt = dt1;
    if (IsNumeric(dt1) && IsNumeric(dt2) && dt1 != dt2) dt = XSDdouble;
    try {
      if (dt == XSDID) return s1.CompareTo(s2);
      if (dt == XSDIDREF) return s1.CompareTo(s2);
      if (dt == XSDNCName) return s1.CompareTo(s2);
      if (dt == XSDNMTOKEN) return s1.CompareTo(s2);
      if (dt == XSDName) return s1.CompareTo(s2);
      if (dt == XSDanyURI) return new Uri(s1).ToString().CompareTo(new Uri(s2).ToString());
      if (dt == XSDbase64Binary) return s1.CompareTo(s2);
      if (dt == XSDboolean) return XmlConvert.ToBoolean(s1).CompareTo(XmlConvert.ToBoolean(s2));
      if (dt == XSDbyte) return XmlConvert.ToSByte(s1).CompareTo(XmlConvert.ToSByte(s2));
      if (dt == XSDdate) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDdateTime) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDdecimal) return XmlConvert.ToDecimal(s1).CompareTo(XmlConvert.ToDecimal(s2));
      if (dt == XSDdouble) return XmlConvert.ToDouble(s1).CompareTo(XmlConvert.ToDouble(s2));
      if (dt == XSDduration) return XmlConvert.ToTimeSpan(s1).CompareTo(XmlConvert.ToTimeSpan(s2));
      if (dt == XSDfloat) return XmlConvert.ToSingle(s1).CompareTo(XmlConvert.ToSingle(s2));
      if (dt == XSDgDay) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDgMonth) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDgMonthDay) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDgYear) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDgYearMonth) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDhexBinary) return s1.CompareTo(s2);
      if (dt == XSDint) return XmlConvert.ToInt32(s1).CompareTo(XmlConvert.ToInt32(s2));
      if (dt == XSDinteger) return XmlConvert.ToDecimal(s1).CompareTo(XmlConvert.ToDecimal(s2));
      if (dt == XSDlanguage) return s1.CompareTo(s2);
      if (dt == XSDlong) return XmlConvert.ToInt64(s1).CompareTo(XmlConvert.ToInt64(s2));
      if (dt == XSDnegativeInteger) return XmlConvert.ToDecimal(s1).CompareTo(XmlConvert.ToDecimal(s2));
      if (dt == XSDnonNegativeInteger) return XmlConvert.ToDecimal(s1).CompareTo(XmlConvert.ToDecimal(s2));
      if (dt == XSDnonPositiveInteger) return XmlConvert.ToDecimal(s1).CompareTo(XmlConvert.ToDecimal(s2));
      if (dt == XSDnormalizedString) return s1.CompareTo(s2);
      if (dt == XSDpositiveInteger) return XmlConvert.ToDecimal(s1).CompareTo(XmlConvert.ToDecimal(s2));
      if (dt == XSDshort) return XmlConvert.ToInt16(s1).CompareTo(XmlConvert.ToInt16(s2));
      if (dt == XSDstring) return s1.CompareTo(s2);
      if (dt == XSDtime) return XmlConvert.ToDateTime(s1).CompareTo(XmlConvert.ToDateTime(s2));
      if (dt == XSDtoken) return s1.CompareTo(s2);
      if (dt == XSDunsignedByte) return XmlConvert.ToByte(s1).CompareTo(XmlConvert.ToByte(s2));
      if (dt == XSDunsignedInt) return XmlConvert.ToUInt32(s1).CompareTo(XmlConvert.ToUInt32(s2));
      if (dt == XSDunsignedLong) return XmlConvert.ToUInt64(s1).CompareTo(XmlConvert.ToUInt64(s2));
      if (dt == XSDunsignedShort) return XmlConvert.ToUInt16(s1).CompareTo(XmlConvert.ToUInt16(s2));
      return s1.CompareTo(s2);
    }
    catch (Exception e) {
      if (Euler.debug || Euler.trace) Console.Error.WriteLine("** " + s1 + " or " + s2 + " " + e.Message);
      return s1.CompareTo(s2);
    }
  }
}