/// <summary>
/// Parses the input row, returning the Tag and Value in a tagValuePair.
/// Note: this method REQUIRES that the rowLeader and RowTrailer be present
/// </summary>
/// <param name="row">String containing a row of data from the file header</param>
/// <returns>The Tag-Value pair extracted from the row</returns>
private ChainInfo.tagValuePair parseHeaderRow(string row)
{
ChainInfo.tagValuePair val = new ChainInfo.tagValuePair();
string curRow = row.Substring(FileHandler.headerRowLeader.Length);
int pos = curRow.IndexOf(FileHandler.headerTagDelim);
val.tagName = curRow.Substring(0, pos);
val.tagValue = curRow.Substring(pos + FileHandler.headerTagDelim.Length);
// Take care of RowTrailer, if necessary:
if (!FileHandler.headerRowTrailer.StartsWith(OpenMedICUtils.newLine))
{
// Must remove everything up to the newLine, if any:
pos = FileHandler.headerRowTrailer.IndexOf(OpenMedICUtils.newLine);
if (pos > -1)
{ // There IS a newLine -- remove everything up to that
}
else
{
// No newLine -- remove whole rowTrailer:
pos = FileHandler.headerRowTrailer.Length;
}
val.tagValue = val.tagValue.Substring(0, val.tagValue.Length - pos);
}
return(val);
}
private void readHeader()
{
ChainInfo.tagValuePair val = new ChainInfo.tagValuePair();
string headerRow;
StreamReader fNew = new StreamReader(fPathName);
try
{
// Scan forward to desired starting point:
if (curReadStartPos > 0)
{
// Scan forward to desired starting point:
fNew.BaseStream.Seek(curReadStartPos, System.IO.SeekOrigin.Begin);
}
for (int i = 0; i < 10000; i++) // more than 10K lines of header would be a problem...
{
headerRow = fNew.ReadLine();
this.curReadStartPos += headerRow.Length + OpenMedICUtils.newLine.Length;
if (headerRow == FileHandler.headerEndDelim)
{ // End of the header
// We are done:
break;
}
else if (!headerRow.StartsWith(FileHandler.headerRowLeader))
{ // NOT a new header row
// Hmmm, this is a continuation of the last value!
val.tagValue += FileHandler.headerRowTrailer + headerRow;
// Now overwrite what we wrote on the last write:
setInitValueByTag(initValues, val);
// If there are even more rows, we'll update this again later...
}
else if (!OpenMedICUtils.isEmpty(headerRow))
{ // NOT empty (must be a new header row)
val = parseHeaderRow(headerRow);
// Update initValues -- this is either the "live" object or
// it's the local-only object, depending on our mode:
setInitValueByTag(initValues, val);
}
// Check for run-away (unterminated) headers:
if (i > 9998)
{
// Bad!
throw new FileLoadException("The header is not terminated or too big! "
+ "Already processed " + i + " rows without finding the Header Terminator row (\""
+ FileHandler.headerEndDelim + "\")!",
this.fPathName);
}
}
}
finally
{
fNew.Close();
}
}
private void setInitValueByTag(ChainInfo initSet, ChainInfo.tagValuePair tagVal)
{
// Get the tag:
ChainInfo.varTags tag = ChainInfo.getTagFromValue(tagVal.tagName);
// Set appropriately -- try ChainInfo first:
bool matched = initSet.setByTag(tag, tagVal.tagValue);
if (!matched) // It was not an ChainInfo, try DataInfo:
{
matched = initSet.dataInfo.setByTag(tag, tagVal.tagValue);
}
if (!matched) // Not a DataInfo, try a PatientInfo
{
matched = initSet.patientInfo.setByTag(tag, tagVal.tagValue);
}
if (!matched)
{
matched = initSet.fileInfo.setByTag(tag, tagVal.tagValue);
}
if (!matched)
{
// None of the above -- ????
}
}
