/// <summary> Returns a string which represents a record in machine readable record format. </summary>
/// <param name="Record"> MARC record to convert to MARC21 </param>
/// <returns> MARC record as MARC21 Exchange format record string</returns>
public static string To_Machine_Readable_Record(MARC_Record Record)
{
// Create the stringbuilder for this
StringBuilder directory = new StringBuilder(1000);
StringBuilder completefields = new StringBuilder(2000);
StringBuilder completeLine = new StringBuilder(200);
// Step through each entry by key from the hashtable
List<string> overallRecord = new List<string>();
int runningLength = 0;
// Step through each field ( control and data ) in the record
foreach (MARC_Field thisEntry in Record.Sorted_MARC_Tag_List)
{
// Perpare to build this line
if (completeLine.Length > 0)
completeLine.Remove(0, completeLine.Length);
// Is this a control field (with no subfields) or a data field?
if (thisEntry.Subfield_Count == 0)
{
if (!String.IsNullOrEmpty(thisEntry.Control_Field_Value))
{
completeLine.Append(int_to_string(thisEntry.Tag, 3) + Record_Seperator);
completeLine.Append(thisEntry.Control_Field_Value);
overallRecord.Add(completeLine.ToString());
}
}
else
{
// Start this tag and add the indicator, if there is one
if (thisEntry.Indicators.Length == 0)
completeLine.Append(int_to_string(thisEntry.Tag, 3) + Record_Seperator);
else
completeLine.Append(int_to_string(thisEntry.Tag, 3) + Record_Seperator + thisEntry.Indicators);
// Build the complete line
foreach (MARC_Subfield thisSubfield in thisEntry.Subfields)
{
if (thisSubfield.Subfield_Code == ' ')
{
if (thisEntry.Indicators.Length == 0)
completeLine.Append(thisSubfield.Data);
else
completeLine.Append(Unit_Seperator.ToString() + thisSubfield.Data);
}
else
{
completeLine.Append(Unit_Seperator.ToString() + thisSubfield.Subfield_Code + thisSubfield.Data);
}
}
// Add this to the list
overallRecord.Add(completeLine.ToString());
}
}
// Now, add these to the directory and completefields StringBuilders
foreach (string thisLin in overallRecord)
{
// Add this line to the directory and fields
directory.Append(thisLin.Substring(0, 3) + (int_to_string(adjusted_length(thisLin) - 3, 4)) + (int_to_string(runningLength, 5)));
completefields.Append(thisLin.Substring(3));
// Increment the running length
runningLength += adjusted_length(thisLin) - 3;
}
// Get the length of just the directory, before we start appending more to it
int directory_length = directory.Length;
// Compile the return value
directory.Append(completefields.ToString() + Record_Seperator + Group_Seperator);
// Get the leader
string leader = Record.Leader;
// Insert the total length of this record
runningLength += leader.Length + directory_length + 2;
// Return the combination of these two fields, plus the end of record char
return int_to_string(runningLength, 5) + leader.Substring(5, 7) + int_to_string(leader.Length + directory_length + 1, 5) +
leader.Substring(17) + directory;
}
/// <summary> Append a single record to the file </summary>
/// <param name="Record">New record to append </param>
public void AppendRecord(MARC_Record Record)
{
writer.Write(To_Machine_Readable_Record(Record));
}
/// <summary> Returns this MARC record as a MarcXML-formatted string </summary>
/// <param name="Record"> MARC record to convert to a MarcXML-formatted string</param>
/// <returns> This record as MarcXML-formatted string with the XML and collection declarative tags around the record </returns>
public static string To_MarcXML(MARC_Record Record)
{
return To_MarcXML(Record, true);
}
/// <summary> Returns this MARC record as a MarcXML-formatted string </summary>
/// <param name="Record"> MARC record to convert to a MarcXML-formatted string</param>
/// <param name="Include_Start_End_Tags"> Flag indicates whether to include the XML and collection declarative tags around the record </param>
/// <returns> This record as MarcXML-formatted string </returns>
public static string To_MarcXML(MARC_Record Record, bool Include_Start_End_Tags)
{
StringBuilder returnValue = new StringBuilder(5000);
// Add the MARC XML header and start this collection
if (Include_Start_End_Tags)
{
const string indent = " ";
returnValue.AppendLine("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
returnValue.AppendLine("<collection xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"");
returnValue.AppendLine(indent + "xsi:schemaLocation=\"http://www.loc.gov/MARC21/slim");
returnValue.AppendLine(indent + indent + "http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd\"");
returnValue.AppendLine(indent + "xmlns=\"http://www.loc.gov/MARC21/slim\">");
}
// Begin this record and add the leader
XElement record_root = new XElement("record",
new XElement("leader", Record.Leader)
);
// Step through each field in the collection
foreach (MARC_Field thisField in Record.Sorted_MARC_Tag_List)
{
if (thisField.Subfield_Count == 0)
{
if (thisField.Control_Field_Value.Length > 0)
{
// Create this new control field and add it to the root element
XElement controlField = new XElement("controlfield",
thisField.Control_Field_Value.Replace(Convert.ToChar((byte)0x1F), ' '),
new XAttribute("tag", thisField.Tag.ToString(CultureInfo.InvariantCulture).PadLeft(3, '0'))
);
record_root.Add(controlField);
}
}
else
{
// Create the new datafield element and add it to the root element
XElement dataField = new XElement("datafield",
new XAttribute("tag", thisField.Tag.ToString(CultureInfo.InvariantCulture).PadLeft(3, '0')),
new XAttribute("ind1", thisField.Indicator1),
new XAttribute("ind2", thisField.Indicator2)
);
record_root.Add(dataField);
// Add each subfield
foreach (MARC_Subfield thisSubfield in thisField.Subfields)
{
// Create this subfield element and add it to the datafield
XElement subfield = new XElement("subfield",
thisSubfield.Data.Replace(Convert.ToChar((byte)0x1F), ' '),
new XAttribute("code", thisSubfield.Subfield_Code)
);
dataField.Add(subfield);
}
}
}
// Add the XML text to the string builder
returnValue.Append(record_root.ToString());
// Close this collection, if requested
if (Include_Start_End_Tags)
{
returnValue.AppendLine();
returnValue.AppendLine("</collection>");
}
return returnValue.ToString();
}
/// <summary> Append a single record to the file </summary>
/// <param name="Record">New record to append </param>
public void AppendRecord(MARC_Record Record)
{
writer.WriteLine(To_MarcXML(Record, false));
}