private static void ParseSatelliteSensor(ref HdrFile hdr)
{
if (string.IsNullOrEmpty(hdr.Description) || string.IsNullOrEmpty(hdr.SensorType))
{
return;
}
Int16 satelliteType = -1;
if (!Int16.TryParse(hdr.SensorType, out satelliteType))
{
return;
}
string regStr = @"\S*\s*\S*filedatetime:(?<year>\d{4})(?<month>\d{2})(?<day>\d{2})\s*(?<hour>\d{2})(?<minute>\d{2})(?<second>\d{2})\S*";
DateTime dt = DateTime.MinValue;
Regex reg = new Regex(regStr);
if (reg.IsMatch(hdr.Description.ToLower()))
{
Match m = reg.Match(hdr.Description.ToLower());
if (!DateTime.TryParse(m.Groups["year"].Value + "-" + m.Groups["month"].Value + "-" + m.Groups["day"].Value + " " + m.Groups["hour"].Value
+ ":" + m.Groups["minute"].Value + ":" + m.Groups["second"].Value, out dt))
{
dt = DateTime.MinValue;
}
}
}
public static HdrFile ParseFromHdrfile(string hdrfile)
{
string[] regexStrs = new string[] { @"^\s*\bdescription\b\s*=\s*{(?<Des>.*)}$",
@"^\s*\bsamples\b\s*=\s*(?<samples>\d*)$",
@"^\s*\blines\b\s*=\s*(?<lines>\d*)$",
@"^\s*\bbands\b\s*=\s*(?<bands>\d*)$",
@"^\s*\bheader\b\s*\boffset\b\s*=\s*(?<headerOffset>\d*)$",
@"^\s*\bfile\b\s*\btype\b\s*=\s*(?<fileType>.*)$",
@"^\s*\bdata\b\s*\btype\b\s*=\s*(?<dataType>\d*)$",
@"^\s*\binterleave\b\s*=\s*(?<interleave>.*)$",
@"^\s*\bsensor\b\s*\btype\b\s*=\s*(?<sensorType>.*)$",
@"^\s*\bbyte\b\s*\border\b\s*=\s*(?<byteOder>\d*)$",
@"^\s*\bmap\b\s*\binfo\b\s*=\s*{(?<prjName>.*),\s*(?<CX>\d+(\.\d+)?)\s*,\s*(?<CY>\d+(\.\d+)?)\s*,\s*(?<CLon>-?\d+(\.\d+)?)([E|e](?<ELon>\+?\d+))?\s*,\s*(?<CLat>-?\d+(\.\d+)?)([E|e](?<ELat>\+?\d+))?\s*,\s*(?<RLon>-?\d+(\.\d+)?)([E|e](?<ERLon>-?\d+))?\s*,\s*(?<RLat>-?\d+(\.\d+)?)([E|e](?<ERLat>-?\d+))?\s*,\s*(?<Project>\S*)\s*,\s*\bunits\b\s*=\s*(?<units>\S*)\s*}",
@"^\s*\bband\b\s*\bnames\b\s*=\s*{\s*(?<bandNames>[^}]*)",
@"^\s*\bgeo\b\s*\bpoints\b\s*=\s*{\s*(?<geoPoints>[^}]*)}$" };
HdrFile _hdrFile = new HdrFile();
string projExp = @"\bprojection\b\s*\binfo\b\s*=\s*{(?<ID>\d+),.+}";
string fileString = File.ReadAllText(hdrfile, Encoding.Default);
Match prjM = Regex.Match(fileString, projExp, RegexOptions.IgnoreCase);
if (prjM.Success)
{
_hdrFile.HdrProjectionInfo = GetHdrProjectionInfo(prjM.Value);
}
//
string[] context = File.ReadAllLines(hdrfile, Encoding.Default);
int j = 0;
foreach (string str in context)
{
for (int i = 0; i < regexStrs.Length; i++)
{
Regex regex = new Regex(regexStrs[i]);
Match m = regex.Match(str);
if (m.Success)
{
switch (i)
{
case 0: _hdrFile.Description = m.Groups["Des"].Value; break;
case 1: _hdrFile.Samples = Convert.ToInt32(string.IsNullOrEmpty(m.Groups["samples"].Value) ? "0" : m.Groups["samples"].Value); break;
case 2: _hdrFile.Lines = Convert.ToInt32(string.IsNullOrEmpty(m.Groups["lines"].Value) ? "0" : m.Groups["lines"].Value); break;
case 3: _hdrFile.Bands = Convert.ToInt32(string.IsNullOrEmpty(m.Groups["bands"].Value) ? "0" : m.Groups["bands"].Value); break;
case 4: _hdrFile.HeaderOffset = Convert.ToInt32(string.IsNullOrEmpty(m.Groups["headerOffset"].Value) ? "0" : m.Groups["headerOffset"].Value); break;
case 5: _hdrFile.FileType = m.Groups["fileType"].Value; break;
case 6: _hdrFile.DataType = Convert.ToInt32(string.IsNullOrEmpty(m.Groups["dataType"].Value) ? "0" : m.Groups["dataType"].Value); break;
case 7: _hdrFile.Intertleave = GetEnuminterleave(m.Groups["interleave"].Value); break;
case 8: _hdrFile.SensorType = m.Groups["sensorType"].Value; break;
case 9: _hdrFile.ByteOrder = GetEnumByteOrder(m.Groups["byteOder"].Value); break;
case 10:
_hdrFile.MapInfo = GetMapInfo(m.Groups["prjName"].Value, m.Groups["CX"].Value, m.Groups["CY"].Value, m.Groups["CLon"].Value, m.Groups["CLat"].Value, m.Groups["ELon"].Value, m.Groups["ELat"].Value, m.Groups["RLon"].Value, m.Groups["ERLon"].Value, m.Groups["RLat"].Value, m.Groups["ERLat"].Value, m.Groups["Project"].Value, m.Groups["units"].Value); break;
case 11: _hdrFile.BandNames = GetBandNames(m.Groups["bandNames"].Value, str, context, j); break;
case 12: _hdrFile.GeoPoints = GetGeoPoint(m.Groups["geoPoints"].Value); break;
}
break;
}
}
j++;
}
ParseSatelliteSensor(ref _hdrFile);
return(_hdrFile);
}
public static void SaveTo(string hdrfilename, HdrFile hdrfile)
{
try
{
using (StreamWriter sw = new StreamWriter(hdrfilename, false, Encoding.Default))
{
sw.WriteLine("ENVI");
sw.WriteLine("description = {" + hdrfile.Description + "}");
sw.WriteLine(string.Format("samples = {0}", hdrfile.Samples));
sw.WriteLine(string.Format("lines = {0}", hdrfile.Lines));
sw.WriteLine(string.Format("bands = {0}", hdrfile.Bands));
sw.WriteLine(string.Format("header offset = {0}", hdrfile.HeaderOffset));
sw.WriteLine("major frame offsets = {" + hdrfile.MajorFrameOffsets[0] + "," + hdrfile.MajorFrameOffsets[1] + "}");
sw.WriteLine(string.Format("file type = {0}", hdrfile.FileType));
sw.WriteLine(string.Format("data type = {0}", hdrfile.DataType));
sw.WriteLine(string.Format("interleave = {0}", hdrfile.Intertleave.ToString().ToLower()));
sw.WriteLine(string.Format("sensor type = {0}", hdrfile.SensorType));
sw.WriteLine(string.Format("byte order = {0}", (int)hdrfile.ByteOrder));
if (hdrfile.MapInfo != null && !hdrfile.MapInfo.IsEmpty())
{
string mapInfos = "map info = {" + hdrfile.MapInfo.Name + "," +
hdrfile.MapInfo.BaseRowColNumber.X.ToString() + "," + hdrfile.MapInfo.BaseRowColNumber.Y.ToString() + "," +
hdrfile.MapInfo.BaseMapCoordinateXY.Longitude.ToString() + "," + hdrfile.MapInfo.BaseMapCoordinateXY.Latitude.ToString() + "," +
hdrfile.MapInfo.XYResolution.Longitude.ToString() + "," + hdrfile.MapInfo.XYResolution.Latitude.ToString() + "," +
hdrfile.MapInfo.CoordinateType + ",units = " + hdrfile.MapInfo.Units + "}";
sw.WriteLine(mapInfos);
}
if (hdrfile.HdrProjectionInfo != null)
{
sw.WriteLine(hdrfile.HdrProjectionInfo.ToString());
}
if (hdrfile.GeoPoints != null)
{
string sGeoPoints = "geo points = {";
foreach (HdrGeoPoint pt in hdrfile.GeoPoints)
{
sGeoPoints += (pt.PixelPoint.Y.ToString() + "," + pt.PixelPoint.X.ToString() + "," + pt.GeoPoint.Latitude.ToString() + pt.GeoPoint.Longitude.ToString() + ",");
}
if (sGeoPoints.EndsWith(","))
{
sGeoPoints = sGeoPoints.Substring(0, sGeoPoints.Length - 1);
}
sGeoPoints += "}";
sw.WriteLine(sGeoPoints);
}
if (hdrfile.BandNames != null)
{
string bandNames = string.Empty;
foreach (string name in hdrfile.BandNames)
{
bandNames += (name + ",");
}
if (bandNames.EndsWith(","))
{
bandNames = bandNames.Substring(0, bandNames.Length - 1);
}
sw.WriteLine("band names = {" + bandNames + "}");
}
}
}
catch (Exception e)
{
return;
}
}