/*
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: DT.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 Date Time (DT).
/// </summary>
public sealed class DateTime: ValueRepresentation
{
public DateTime(Tag tag): base("DT", tag) {}
public override string ToLongString()
{
return "Date Time (DT)";
}
protected override Array DecodeImproper(byte[] bytes)
{
string s = TransferSyntax.ToString(bytes);
string[] multiValue = ToImproperMultiValue(s);
System.DateTime[] dateTime = new System.DateTime[multiValue.Length];
for (int i = 0; i < dateTime.Length; i++)
{
string item = multiValue[i];
if (item.Length > 0)
{
if (Regex.IsMatch(item, "^ [0-9]{10}" +
"([0-9]{2} ([0-9]{2} (\\.[0-9]{6}" +
"([\\+\\-][0-9]{4})? )? )? )? $",
RegexOptions.IgnorePatternWhitespace))
{
item = item.Replace(".", null);
string year = item.Substring(0, 4);
string month = item.Substring(4, 2);
string day = item.Substring(6, 2);
string hour = "0";
if (item.Length > 8) hour = item.Substring(8, 2);
string minute = "0";
if (item.Length > 10) minute = item.Substring(10, 2);
string second = "0";
if (item.Length > 12) second = item.Substring(12, 2);
string millisecond = "0";
if (item.Length > 14)
millisecond = item.Substring(14, 6);
string timeZone = "+0";
if (item.Length > 20)
timeZone = item.Substring(20, 5);
// TODO: What to do with the time zone?
try
{
dateTime[i] = new System.DateTime(int.Parse(year),
int.Parse(month), int.Parse(day), int.Parse(hour),
int.Parse(minute), int.Parse(second),
int.Parse(millisecond));
}
catch (Exception e)
{
throw new EncodingException(
"Date time format is invalid.", Tag,
Name + "/item", item);
}
}
else
throw new EncodingException(
"Date time format is invalid.", Tag, Name + "/item",
item);
}
}
return dateTime;
}
protected override Array DecodeProper(byte[] bytes)
{
string s = TransferSyntax.ToString(bytes);
string[] multiValue = ToProperMultiValue(s);
System.DateTime[] dateTime = new System.DateTime[multiValue.Length];
for (int i = 0; i < dateTime.Length; i++)
{
string item = multiValue[i];
if (item.Length > 0)
{
if (Regex.IsMatch(item, "^ [0-9]{10}" +
"([0-9]{2} ([0-9]{2} (\\.[0-9]{6}" +
"([\\+\\-][0-9]{4})? )? )? )? $",
RegexOptions.IgnorePatternWhitespace))
{
item = item.Replace(".", null);
string year = item.Substring(0, 4);
string month = item.Substring(4, 2);
string day = item.Substring(6, 2);
string hour = "0";
if (item.Length > 8) hour = item.Substring(8, 2);
string minute = "0";
if (item.Length > 10) minute = item.Substring(10, 2);
string second = "0";
if (item.Length > 12) second = item.Substring(12, 2);
string millisecond = "0";
if (item.Length > 14)
millisecond = item.Substring(14, 6);
string timeZone = "+0";
if (item.Length > 20)
timeZone = item.Substring(20, 5);
// TODO: What to do with the time zone?
try
{
dateTime[i] = new System.DateTime(int.Parse(year),
int.Parse(month), int.Parse(day), int.Parse(hour),
int.Parse(minute), int.Parse(second),
int.Parse(millisecond));
}
catch (Exception e)
{
throw new EncodingException(
"Date time format is invalid.", Tag,
Name + "/item", item);
}
}
else
throw new EncodingException(
"Date time format is invalid.", Tag, Name + "/item",
item);
}
}
return dateTime;
}
}
}
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