public LASFile ReadDataLines(string inputFile, out int errorCode)
{
//Pass the file path and file name to the StreamReader constructor
LASFile res = new LASFile();
errorCode = 0;
List <string> errorInfo = new List <string>();
StreamReader sr = null;
try
{
sr = new StreamReader(inputFile);
res.filePath = inputFile;
}
catch (FileNotFoundException fex)
{
}
catch (Exception ex)
{
}
int columnCount = 0;
List <string> columnHeaders = new List <string>();
List <LASDataRow> dataRows = new List <LASDataRow>();
if (sr != null)
{
//Read the first line of text
string line = null;
bool inDataSection = false;
bool inCurveSection = false;
bool inWellInfoSection = false;
bool inVersionSection = false;
bool inParameterSection = false;
int lineCount = 0;
List <string> curveHeaders = new List <string>();
try
{
while ((line = sr.ReadLine()) != null)
{
lineCount++;
if (!line.StartsWith("#"))
{
if (line.StartsWith("~"))
{
// this is the start/end of a seciton, so turn everything off
inDataSection = false;
inCurveSection = false;
inWellInfoSection = false;
inVersionSection = false;
inParameterSection = false;
}
if (line.ToUpper().StartsWith("~C"))
{
inCurveSection = true;
}
if (line.ToUpper().StartsWith("~P"))
{
inParameterSection = true;
}
if (line.ToUpper().StartsWith("~W"))
{
inWellInfoSection = true;
}
if (line.ToUpper().StartsWith("~V"))
{
inVersionSection = true;
}
if (line.ToUpper().StartsWith("~A"))
{
try
{
inDataSection = true;
if (curveHeaders.Count < 1)
{
columnHeaders = ParseHeaderLine(line);
}
else
{
columnHeaders = curveHeaders;
}
columnCount = columnHeaders.Count;
}
catch (Exception ex)
{
errorCode = LASErrorCodes.ERROR_PARSING_LAS_HEADERS;
errorInfo.Add(LASErrorCodes.LookupCode(errorCode));
break;
}
}
else
{
if (inDataSection)
{
if (line.Trim().Length > 0)
{
LASDataRow ldr = null;
int err = 0;
try
{
ldr = ParseDataLine(line, columnCount, out err, res.nullValue);
}
catch (Exception ex) { }
if (ldr != null)
{
dataRows.Add(ldr);
}
else
{
errorInfo.Add("Unable to parse LAS data row at line: " + lineCount);
}
}
}
}
if (inWellInfoSection)
{
res.AddWellSectionHeaderLine(line);
// attempt to find the NULL value
if (line.Trim().StartsWith("NULL"))
{
// parse the line to get the null value
try
{
// NULL will appear like this:
//NULL. -999.25 :NULL VALUE
int idx = line.IndexOf('.');
int endIdx = line.IndexOf(':');
string leftOver = line.Substring(idx + 1, endIdx - idx - 1);
double nullVal = Convert.ToDouble(leftOver.Trim());
res.nullValue = nullVal;
}
catch (Exception ex)
{
errorInfo.Add("Could not find NULL value, assuming default of " + string.Format("{0:0.###}", res.nullValue));
}
}
}
if (inParameterSection)
{
res.AddParameterSectionHeaderLine(line);
}
if (inVersionSection)
{
res.AddVersionSectionHeaderLine(line);
if (line.Trim().StartsWith("VERS"))
{
// parse the line to get the null value
try
{
int idx = line.IndexOf('.');
int endIdx = line.IndexOf(':');
string leftOver = line.Substring(idx + 1, endIdx - idx - 1);
double versionVal = Convert.ToDouble(leftOver.Trim());
res.versionValue = versionVal;
if (versionVal != supportedLasVersion)
{
errorInfo.Add("LAS file version '" + versionVal + "' is unsupported. This software can only be used to view LAS 2.0 files.");
}
}
catch (Exception ex)
{
}
}
else if (line.Trim().StartsWith("WRAP."))
{
// parse the line to get the wrap value
try
{
int idx = line.IndexOf('.');
int endIdx = line.IndexOf(':');
string leftOver = line.Substring(idx + 1, endIdx - idx - 1);
string wrap = leftOver.Trim();
res.versionWrap = wrap;
if (wrap.ToUpper().Equals("YES"))
{
errorInfo.Add("The selected LAS file has WRAP set to 'YES'. This feature is not supported by this software, LAS files must have one depth step per line.");
}
}
catch (Exception ex)
{
}
}
}
if (inCurveSection)
{
res.AddCurveSectionHeaderLine(line);
// decode a line and give it to the headers section
int endIdx = line.IndexOf(':');
if (endIdx > 0)
{
string secondPart = line.Substring(0, endIdx).Trim();
int ptIdx = secondPart.IndexOf('.');
string units = "";
string colName = "";
if (ptIdx > 0)
{
colName = secondPart.Substring(0, ptIdx);
units = secondPart.Substring(ptIdx, secondPart.Length - ptIdx);
int firstSpaceAfterUnits = units.Trim().IndexOf(' ');
if (firstSpaceAfterUnits > 0)
{
units = units.Substring(0, firstSpaceAfterUnits);
}
}
string hName = colName.Trim() + units;
//string leftOver = line.Substring(0, endIdx).Trim();
if (!hName.ToUpper().StartsWith("DEPT"))
{
curveHeaders.Add(hName);
}
}
}
}
}
if (dataRows.Count == 0)
{
errorCode = LASErrorCodes.NO_DATA_ROWS_LOADED;
errorInfo.Add(LASErrorCodes.LookupCode(errorCode));
}
}
catch (Exception ex)
{
errorCode = LASErrorCodes.ERROR_READING_LAS_DATA_SECTION;
errorInfo.Add(LASErrorCodes.LookupCode(errorCode));
}
res.columnHeaders = columnHeaders;
res.dataRows = dataRows;
res.errorDetails = errorInfo;
sr.Dispose();
sr.Close();
}
else
{
errorCode = LASErrorCodes.STREAM_OPEN_FAILED;
}
return(res);
}
public LASFile ReadCSVLines(string inputFile, int columnOffset, out int errCode)
{
//Pass the file path and file name to the StreamReader constructor
LASFile res = new LASFile();
StreamReader sr = null;
List <string> errorInfo = new List <string>();
errCode = 0;
try
{
sr = new StreamReader(inputFile);
}
catch (FileNotFoundException fex)
{
errCode = LASErrorCodes.CSV_FILE_NOT_FOUND;
}
catch (Exception ex)
{
errCode = LASErrorCodes.CSV_STREAM_ERROR;;
}
if (errCode != 0)
{
errorInfo.Add("Error loading file. Message: " + LASErrorCodes.LookupCode(errCode));
}
int columnCount = 0;
int maxErrors = 20;
List <string> columnHeaders = new List <string>();
List <LASDataRow> dataRows = new List <LASDataRow>();
if (sr != null)
{
string headLine = sr.ReadLine();
try
{
res.columnHeaders = ParseCSVHeaderLine(columnOffset, headLine);
}
catch (Exception ex) {
errCode = LASErrorCodes.CSV_HEADER_PARSE_FAILED;
}
if (errCode == 0)
{
columnCount = res.columnHeaders.Count;
string line;
//Read the first line of text
Dictionary <int, int> inputErrors = new Dictionary <int, int>();
int lineNumber = 1;
while ((line = sr.ReadLine()) != null)
{
lineNumber++;
int lineErr = 0;
LASDataRow ldr = ParseCSVLine(columnOffset, line, columnCount, out lineErr, res.nullValue);
if (lineErr == 0)
{
dataRows.Add(ldr);
}
else
{
errorInfo.Add("Line: " + lineNumber + " : " + LASErrorCodes.LookupCode(lineErr));
if (errorInfo.Count == maxErrors)
{
errCode = LASErrorCodes.MAERRORS_ENCOUNTERED;
errorInfo.Add(LASErrorCodes.LookupCode(errCode));
break;
}
}
}
res.dataRows = dataRows;
}
sr.Dispose();
sr.Close();
res.errorDetails = errorInfo;
}
return(res);
}