private void swapConstant(LAS_Constant c)
{
string tmp = c.Value;
c.Value = c.Description;
c.Description = tmp;
}
/// <summary>
/// Sets the LAS constant by name, adding a new parameter if necessary
/// </summary>
/// <param name="name">Constant name</param>
/// <param name="unit">Constant unit</param>
/// <param name="value">Constant value</param>
/// <param name="value">Description</param>
public void SetConstant(string name, string unit, string value, string description)
{
foreach (LAS_Constant lc in Constants)
{
if (lc.Name != name)
{
continue;
}
lc.Value = value;
return;
}
LAS_Constant newP = new LAS_Constant(name, unit, value, description);
Constants.Add(newP);
}
/// <summary>
/// Sets the LAS constant by name, adding a new parameter if necessary
/// </summary>
/// <param name="name">Constant name</param>
/// <param name="unit">Constant unit</param>
/// <param name="value">Constant value</param>
/// <param name="value">Description</param>
public override void SetParameter(string name, string unit, string value, string description)
{
foreach (LAS_Constant lc in Parameters)
{
if (lc.Name != name)
{
continue;
}
lc.Value = value;
return;
}
LAS_Constant newP = new LAS_Constant(name, unit, value, description);
Parameters.Add(newP);
}
/// <summary>
/// Construsctor; reads the LAS file header to memory
/// </summary>
/// <param name="filename">File name</param>
/// <param name="ParseData">Set to true is data parsing is needed</param>
public LAS_File(string filename, bool ParseData) : base(filename)
{
FileStream fs = null;
StreamReader sr = null;
try
{
fs = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
sr = new StreamReader(fs);
bool version_info_block_on = false;
bool well_info_block_on = false;
bool curve_info_block_on = false;
bool parameter_info_block_on = false;
bool other_info_block_on = false;
bool data_on = false;
while (!sr.EndOfStream)
{
string s = sr.ReadLine();
string s2 = s.ToLower();
if (s2.StartsWith("~version"))
{
version_info_block_on = true;
well_info_block_on = false;
curve_info_block_on = false;
parameter_info_block_on = false;
other_info_block_on = false;
data_on = false;
continue;
}
if (s2.StartsWith("~well"))
{
version_info_block_on = false;
well_info_block_on = true;
curve_info_block_on = false;
parameter_info_block_on = false;
other_info_block_on = false;
data_on = false;
continue;
}
if (s2.StartsWith("~curv") || s2.StartsWith("~log_definition"))
{
version_info_block_on = false;
well_info_block_on = false;
curve_info_block_on = true;
parameter_info_block_on = false;
other_info_block_on = false;
data_on = false;
continue;
}
if (s2.StartsWith("~paramet") || s2.StartsWith("~log_parameter"))
{
version_info_block_on = false;
well_info_block_on = false;
curve_info_block_on = false;
parameter_info_block_on = true;
other_info_block_on = false;
data_on = false;
continue;
}
if (s2.ToLower().StartsWith("~other"))
{
version_info_block_on = false;
well_info_block_on = false;
curve_info_block_on = false;
parameter_info_block_on = false;
other_info_block_on = true;
data_on = false;
continue;
}
if (s2.ToUpper().StartsWith("~A") || s2.StartsWith("~log_data"))
{
version_info_block_on = false;
well_info_block_on = false;
curve_info_block_on = false;
parameter_info_block_on = false;
other_info_block_on = false;
data_on = true;
if (!ParseData)
{
break;
}
continue;
}
if (version_info_block_on)
{
if (s.StartsWith("#"))
{
continue;
}
if (s.Length <= 1)
{
continue;
}
LAS_Constant lc = new LAS_Constant(s);
if (lc.Name.ToUpper() == "VERS" && !lc.Value.StartsWith("2."))
{
throw new Exception("LAS version other than 2.x cannot be handled.");
}
if (lc.Name.ToUpper() == "WRAP" && !lc.Value.StartsWith("N"))
{
throw new Exception("Wrapped data cannot be handled by most clients. Do not use LAS wrap.");
}
Version.Add(lc);
}
if (well_info_block_on)
{
if (s.StartsWith("#"))
{
continue;
}
if (s.Length <= 1)
{
continue;
}
LAS_Constant lc = new LAS_Constant(s);
if (lc.Name == "NULL")
{
MissingValue = Convert.ToDouble(lc.Value);
}
Constants.Add(lc);
}
if (curve_info_block_on)
{
if (s.StartsWith("#"))
{
continue;
}
if (s.Length <= 1)
{
continue;
}
LAS_Channel lc = new LAS_Channel(s);
Channels.Add(lc);
}
if (parameter_info_block_on)
{
if (s.StartsWith("#"))
{
continue;
}
if (s.Length <= 1)
{
continue;
}
LAS_Constant lc = new LAS_Constant(s);
Parameters.Add(lc);
}
if (other_info_block_on)
{
if (s.Length <= 1)
{
continue;
}
LAS_InfoLine lil = new LAS_InfoLine(s);
InfoLines.Add(lil);
}
if (data_on)
{
if (s.StartsWith("#"))
{
continue;
}
if (s.Length <= 1)
{
continue;
}
if (s.StartsWith("~A"))
{
continue;
}
m_RawData.Add(s);
}
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
if (sr != null)
{
sr.Close();
}
if (fs != null)
{
fs.Close();
}
}
ConvertConstantsFromEarlierLAS();
// parse data to channels
if (Channels.Count <= 0)
{
throw new Exception("No curves have been declared in the file.");
}
foreach (string s in m_RawData)
{
string[] ss = s.Split(_space_split, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < ss.Length; i++)
{
Channels[i].AddData(ss[i], MissingValue);
}
}
m_RawData.Clear();
}