private MarcDirectory ParseDirectory(string mrcContent, MarcLeader mrcLdr)
{
const int ldrLength = 24;
const int dirTerminatorLength = 1;
var dirLength = int.Parse(mrcLdr.BaseAddressOfData) - ldrLength - dirTerminatorLength;
var mrcDir = new MarcDirectory(mrcContent, ldrLength, dirLength, mrcLdr);
v_RowsDirectory.AddRange(mrcDir.GetDirArray());
return(mrcDir);
}
private bool ParseVarDataFields(MarcDirectory mrcDir)
{
//foreach (var dirEntry in mrcDir.DirEntryList.OrderBy(x => x.Order))
foreach (var dirEntry in mrcDir.DirEntryList) // do not reorder LOC mrc files which may have slightly different ordering.
{
// skip control fields:
if (dirEntry.Id.StartsWith("00"))
{
continue;
}
var varDataField = MarcViewerTools.GetVariableDataField(dirEntry);
if (varDataField == null)
{
continue;
}
// populate variable data fields table:
v_RowsVarData.Add(new[] { varDataField.Id, varDataField.ToInd1String(), varDataField.ToInd2String(), varDataField.ToSubfieldString() });
}
return(true);
}
private bool ParseControlFields(MarcLeader mrcLdr, MarcDirectory mrcDir)
{
var ctrlSupported = new[] { "001", "003", "005", "006", "007", "008" };
var fieldIdList = mrcDir.DirEntryList.Select(x => x.Id).Where(x => x.StartsWith("00")).ToList();
var ctrlUnsupported = fieldIdList.Except(ctrlSupported).ToList();
if (ctrlUnsupported.Count > 0)
{
return(false);
}
// parse 001:
var dirEntries001 = mrcDir.DirEntryList.SingleOrDefault(x => x.Id == "001")?.DataChars?.SkipLast(1)?.ToList(); // remove field terminator.
if (dirEntries001 != null)
{
if (dirEntries001.Count != 13 || !dirEntries001.ToString().StartsWith("BIB-"))
{
//throw new c_ParseException("Only predictivebib.org records supported.", c_StatusCode.InvalidCredentials); // custom exception.
}
var mrc001 = new Marc001(dirEntries001);
v_RowsControl.AddRange(mrc001.GetCtrlArray());
//v_RowsControl.Add(new[] { "\u2009", "\u2009", "\u2009", "\u2009" });
}
// parse 003:
var dirEntries003 = mrcDir.DirEntryList.SingleOrDefault(x => x.Id == "003")?.DataChars?.SkipLast(1)?.ToList(); // remove field terminator.
if (dirEntries003 != null)
{
var mrc003 = new Marc003(dirEntries003);
v_RowsControl.AddRange(mrc003.GetCtrlArray());
//v_RowsControl.Add(new[] { "\u2009", "\u2009", "\u2009", "\u2009" });
}
// parse 005:
var dirEntries005 = mrcDir.DirEntryList.SingleOrDefault(x => x.Id == "005")?.DataChars?.SkipLast(1)?.ToList(); // remove field terminator.
if (dirEntries005 != null)
{
var mrc005 = new Marc005(dirEntries005);
v_RowsControl.AddRange(mrc005.GetCtrlArray());
//v_RowsControl.Add(new[] { "\u2009", "\u2009", "\u2009", "\u2009" });
}
// parse 006 (repeatable):
foreach (var dirEntries in mrcDir.DirEntryList.Where(x => x.Id == "006"))
{
var dirEntries006 = dirEntries.DataChars?.SkipLast(1)?.ToList(); // remove field terminator.
if (dirEntries006 != null)
{
var mrc006 = new Marc006(dirEntries006);
v_RowsControl.AddRange(mrc006.Material.GetCtrlArray());
//v_RowsControl.Add(new[] { "\u2009", "\u2009", "\u2009", "\u2009" });
}
}
// parse 007 (repeatable):
foreach (var dirEntries in mrcDir.DirEntryList.Where(x => x.Id == "007"))
{
var dirEntries007 = dirEntries.DataChars?.SkipLast(1)?.ToList(); // remove field terminator.
if (dirEntries007 != null)
{
var mrc007 = new Marc007(dirEntries007);
v_RowsControl.AddRange(mrc007.Material.GetCtrlArray());
//v_RowsControl.Add(new[] { "\u2009", "\u2009", "\u2009", "\u2009" });
}
}
// parse 008:
var dirEntries008 = mrcDir.DirEntryList.SingleOrDefault(x => x.Id == "008")?.DataChars?.SkipLast(1)?.ToList(); // remove field terminator.
if (dirEntries008 != null)
{
var mrc008 = new Marc008(mrcLdr.materialType, dirEntries008);
v_RowsControl.AddRange(mrc008.GetCtrlArray());
//v_RowsVarCtrl.Add(new[] { "\u2009", "\u2009", "\u2009", "\u2009" });
}
return(true);
}