/*
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: TM.cs 48 2007-03-28 13:49:15Z agnandt $
*/
using System;
using openDicom.DataStructure;
using System.Text.RegularExpressions;
namespace openDicom.Encoding{
/// <summary>
/// This class represents the specific DICOM VR Time (TM).
/// </summary>
public sealed class Time: ValueRepresentation
{
public Time(Tag tag): base("TM", tag) {}
public override string ToLongString()
{
return "Time (TM)";
}
protected override Array DecodeImproper(byte[] bytes)
{
string s = TransferSyntax.ToString(bytes);
string[] multiValue = ToImproperMultiValue(s);
TimeSpan[] time = new TimeSpan[multiValue.Length];
for (int i = 0; i < time.Length; i++)
{
string item = multiValue[i];
if (item.Length > 0)
{
item = item.TrimEnd(null);
if (Regex.IsMatch(item,
"^[0-9]{2}(:?[0-9]{2}(:?[0-9]{2}(\\.[0-9]{1,6})?)?)?$"))
{
item = item.Replace(":", null).Replace(".", null);
string hour = item.Substring(0, 2);
string minute = "0";
if (item.Length > 2) minute = item.Substring(2, 2);
string second = "0";
if (item.Length > 4) second = item.Substring(4, 2);
string millisecond = "0";
if (item.Length > 6)
millisecond = item.Substring(6, item.Length - 6);
try
{
time[i] = new TimeSpan(0, int.Parse(hour),
int.Parse(minute), int.Parse(second),
int.Parse(millisecond));
}
catch (Exception e)
{
throw new EncodingException(
"Time format is invalid.",
Tag, Name + "/item", item);
}
}
else
throw new EncodingException("Time format is invalid.",
Tag, Name + "/item", item);
}
}
return time;
}
protected override Array DecodeProper(byte[] bytes)
{
string s = TransferSyntax.ToString(bytes);
string[] multiValue = ToProperMultiValue(s);
TimeSpan[] time = new TimeSpan[multiValue.Length];
for (int i = 0; i < time.Length; i++)
{
string item = multiValue[i];
if (item.Length > 0)
{
item = item.TrimEnd(null);
if (Regex.IsMatch(item,
"^[0-9]{2}(:?[0-9]{2}(:?[0-9]{2}(\\.[0-9]{1,6})?)?)?$"))
{
item = item.Replace(":", null).Replace(".", null);
string hour = item.Substring(0, 2);
string minute = "0";
if (item.Length > 2) minute = item.Substring(2, 2);
string second = "0";
if (item.Length > 4) second = item.Substring(4, 2);
string millisecond = "0";
if (item.Length > 6)
millisecond = item.Substring(6, item.Length - 6);
try
{
time[i] = new TimeSpan(0, int.Parse(hour),
int.Parse(minute), int.Parse(second),
int.Parse(millisecond));
}
catch (Exception e)
{
throw new EncodingException(
"Time format is invalid.",
Tag, Name + "/item", item);
}
}
else
throw new EncodingException("Time format is invalid.",
Tag, Name + "/item", item);
}
}
return time;
}
}
}
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