public ICsvRowActivatorFactory <T> Create(IConverterProvider converterProvider, IColumnNameMapper columnNameMapper)
{
// Create assembly/module
bool saveDll = false;
AssemblyName assemblyName = new AssemblyName("DynamicCsvRowActivator");
AssemblyBuilder assemblyBuilder = BuildAssembly(assemblyName, new Version(1, 0, 0, 0), saveDll);
ModuleBuilder moduleBuilder = BuildModule(assemblyBuilder, assemblyName, saveDll);
// Create activator type
DynamicCsvRowActivatorBuilder <T> activatorBuilder
= new DynamicCsvRowActivatorBuilder <T>(converterProvider, columnNameMapper);
TypeBuilder activatorTypeBuilder = activatorBuilder.Build(assemblyBuilder, moduleBuilder);
Type activatorType = activatorTypeBuilder.CreateType();
ConstructorInfo activatorConstructor = activatorType.GetConstructor(new Type[] { typeof(string[]) });
// Create factory type
DynamicCsvRowActivatorFactoryBuilder <T> factoryBuilder
= new DynamicCsvRowActivatorFactoryBuilder <T>();
TypeBuilder typeBuilder = factoryBuilder.Build(assemblyBuilder, moduleBuilder, activatorConstructor);
Type factoryType = typeBuilder.CreateType();
ConstructorInfo factoryConstructor = factoryType.GetConstructor(Type.EmptyTypes);
// Save the dll
if (saveDll)
{
assemblyBuilder.Save("DynamicCsvRowActivator.dll");
}
// Create an instance of a factory
ICsvRowActivatorFactory <T> factory = (ICsvRowActivatorFactory <T>)factoryConstructor.Invoke(new object[] { });
return(factory);
}
private ICsvRowActivator <T> CreateSut <T>(string[] headerrow)
{
ICsvRowActivatorFactoryFactory <T> csvRowActivatorFactoryFactory
= new DynamicCsvRowActivatorFactoryFactory <T>();
IColumnNameMapper columnNameMapper = new DefaultColumnNameMapper();
IConverterProvider converterProvider = new DefaultConverterProvider();
ICsvRowActivatorFactory <T> csvRowActivatorFactory
= csvRowActivatorFactoryFactory.Create(converterProvider, columnNameMapper);
ICsvRowActivator <T> activator = csvRowActivatorFactory.Create(headerrow);
return(activator);
}
public IEnumerable <T> ReadAll()
{
// Create an activator factory
ICsvRowActivatorFactory <T> activatorFactory = activatorFactoryFactory.Create(
new DefaultConverterProvider(),
new DefaultColumnNameMapper()
);
// Create a tokenizer that reads from the csvStream
CsvRowTokenizer tokenizer = new CsvRowTokenizer(csvStream);
// Start streaming data from the tokenizer
IEnumerable <string[]> rows = tokenizer.ReadAllRows();
// Grab the first line (the header)
IEnumerator <string[]> enumerator = rows.GetEnumerator();
if (!enumerator.MoveNext())
{
throw new InvalidDataException("No header found!");
}
string[] headerrow = enumerator.Current;
int columnCount = headerrow.Length;
// Start streaming tokenized data into the activator
ICsvRowActivator <T> activator = activatorFactory.Create(headerrow);
// Stream out all of the CSV rows as objects
while (enumerator.MoveNext())
{
if (enumerator.Current.Length != columnCount)
{
throw new InvalidDataException(
string.Format("Field count mismatch: a row had {0} field(s), but header had {1}!", enumerator.Current.Length, columnCount)
);
}
yield return(activator.CreateFromRow(enumerator.Current));
}
}
