/// <summary>Looks for CsvConverterAttribute on the property using PropertyInfo
/// and then updates any relevant info on the map</summary>
/// <param name="oneMap">The property map to examine</param>
private void CreateAllUserSpecifiedConvertersForOneProperty(ColumnToPropertyMap oneMap)
{
List <CsvConverterAttribute> attributeList = oneMap.PropInformation.HelpFindAllAttributes <CsvConverterAttribute>();
foreach (var oneAttribute in attributeList)
{
// In the case where the user wants to be explicit about ignoring a property, let them.
// So, we will NOT have a converter for reading or writing according to this attribute.
if (oneAttribute.IgnoreWhenReading && oneAttribute.IgnoreWhenWriting)
{
oneMap.IgnoreWhenReading = true;
oneMap.IgnoreWhenWriting = true;
continue;
}
ICsvConverter converter = oneAttribute.CreateConverterForProperty(_theClassType, oneMap.PropInformation, _defaultFactory);
bool isTypeConverter = CreateOneUserSpecifiedConverterForOneProperty(oneMap, converter, oneAttribute, true);
// Only update column information for TYPE converters.
// Pre and Post conveters should NOT contain column information!
if (isTypeConverter)
{
UpdateColumnInformation(oneMap, oneAttribute);
}
}
}
private bool CreateOneUserSpecifiedConverterForOneProperty(ColumnToPropertyMap oneMap, ICsvConverter converter,
CsvConverterAttribute oneAttribute, bool throwExceptionIfConverterHasAlreadyBeenSpecified)
{
// Possible pre or post converter.
if (oneAttribute is CsvConverterStringAttribute stringConverter &&
(stringConverter.IsPreConverter || stringConverter.IsPostConverter))
{
AddOnePropertyPreOrPostConverter(oneMap, converter, stringConverter);
return(false);
}
private void CreateIgnoreColumnMap(List <ColumnToPropertyMap> columns, int columnIndex, string columnName)
{
var newItem = new ColumnToPropertyMap(null, columnIndex)
{
ColumnName = columnName,
ReadConverter = null,
IgnoreWhenReading = true,
};
columns.Add(newItem);
}
private void CreateDefaultConverterForOnePropertyIfNecessary(ColumnToPropertyMap newMap)
{
// User doesn't want to use this column
if (newMap.IgnoreWhenReading && newMap.IgnoreWhenWriting)
{
return;
}
// No converter specified for a type we understand
if (newMap.ReadConverter == null && newMap.WriteConverter == null && IsTypeAllowed(newMap.PropInformation.PropertyType))
{
ICsvConverter converter = _defaultFactory.CreateConverter(newMap.PropInformation.PropertyType);
newMap.ReadConverter = newMap.IgnoreWhenReading ? null : converter;
newMap.WriteConverter = newMap.IgnoreWhenWriting ? null : converter;
}
}
/// <summary>Maps all the properties on the T type class and then order then by column index.</summary>
/// <returns>List of property maps sorted by column index</returns>
public List <ColumnToPropertyMap> CreateWriteMap()
{
var mapList = new List <ColumnToPropertyMap>();
foreach (PropertyInfo info in _theClassType.GetTypeInfo().GetProperties())
{
var oneMap = new ColumnToPropertyMap(info, _columnIndexDefaultValue);
CreateAllUserSpecifiedConvertersForOneProperty(oneMap);
mapList.Add(oneMap);
}
CreateAllUserSpecifiedConvertersOnTheClass(mapList);
CreateDefaultConverterOnAnyPropertyThatDoesNotHaveAConverter(mapList);
// Sort the columns the way the user wants them sorted or by column name
return(mapList.Where(map => ShouldMapBeAdd(map))
.OrderBy(o => o.ColumnIndex)
.ThenBy(o => o.ColumnName)
.ToList());
}
