/*
openDICOM.NET openDICOM# 0.1.1
openDICOM# provides a library for DICOM related development on Mono.
Copyright (C) 2006-2007 Albert Gnandt
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
$Id: UI.cs 48 2007-03-28 13:49:15Z agnandt $
*/
using System;
using openDicom.DataStructure;
using openDicom.Registry;
namespace openDicom.Encoding{
/// <summary>
/// This class represents the specific DICOM VR Unique Identifier (UI).
/// </summary>
public sealed class UniqueIdentifier: ValueRepresentation
{
public UniqueIdentifier(Tag tag): base("UI", tag) {}
public override string ToLongString()
{
return "Unique Identifier (UI)";
}
protected override Array DecodeImproper(byte[] bytes)
{
string s = TransferSyntax.ToString(bytes);
string[] multiValue = ToImproperMultiValue(s);
Uid[] uidValue = new Uid[multiValue.Length];
for (int i = 0; i < uidValue.Length; i++)
{
string item = multiValue[i];
// trailing zero padding
if (item.Length > 0)
{
byte b = (byte) item[item.Length - 1];
if (b == 0)
item = item.Remove(item.Length - 1, 1);
item = item.Replace(" ", null);
}
if (item == null || item.Equals(""))
item = "0";
uidValue[i] = new Uid(item);
}
return uidValue;
}
protected override Array DecodeProper(byte[] bytes)
{
string s = TransferSyntax.ToString(bytes);
string[] multiValue = ToProperMultiValue(s);
Uid[] uidValue = new Uid[multiValue.Length];
for (int i = 0; i < uidValue.Length; i++)
{
string item = multiValue[i];
if (item.Length > 64)
throw new EncodingException(
"A value of max. 64 characters is only allowed.",
Tag, Name + "/item", item);
else if (item.Length > 0)
{
// trailing zero padding
byte b = (byte) item[item.Length - 1];
if (b == 0)
item = item.Remove(item.Length - 1, 1);
item = item.Replace(" ", null);
}
if (item == null || item.Equals(""))
throw new EncodingException("Uid is empty.", Tag,
Name + "/item", item);
uidValue[i] = new Uid(item);
}
return uidValue;
}
}
}
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