public void JaggedTable()
{
const string ValueDelimeter = "|";
const string RecordDelimeter = "\r\n";
const int NumRecords = 4;
const int NumValuesOddRow = 3;
const int NumValuesEvenRow = 5;
var builder = new StringBuilder(128);
for (var recordNum = 0; recordNum < NumRecords; recordNum++)
{
if (recordNum > 0)
{
builder.Append(RecordDelimeter);
}
var numValues = recordNum % 2 == 0 ? NumValuesEvenRow : NumValuesOddRow;
AddRecord(builder, ValueDelimeter, recordNum, numValues);
}
var reader = new DsvReader(builder.ToString(), ValueDelimeter, RecordDelimeter);
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
for (var recordNum = 0; recordNum < NumRecords; recordNum++)
{
Assert.IsTrue(reader.MoveNextRecord());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
var numValues = recordNum % 2 == 0 ? NumValuesEvenRow : NumValuesOddRow;
for (var valueNum = 0; valueNum < numValues; valueNum++)
{
Assert.IsTrue(reader.MoveNextValue());
var value = reader.Current;
Assert.AreEqual($"Value {recordNum}-{valueNum}", value.ToString());
}
Assert.IsFalse(reader.MoveNextValue());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
}
Assert.IsFalse(reader.MoveNextRecord());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
}
public void LargeTable()
{
const string ValueDelimeter = "|";
const string RecordDelimeter = "\r\n";
const int NumRecords = 10_000;
const int NumValues = 100;
var builder = CreateTable(ValueDelimeter, RecordDelimeter, NumRecords, NumValues);
var reader = new DsvReader(builder.ToString(), ValueDelimeter, RecordDelimeter);
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
for (var recordNum = 0; recordNum < NumRecords; recordNum++)
{
Assert.IsTrue(reader.MoveNextRecord());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
for (var valueNum = 0; valueNum < NumValues; valueNum++)
{
Assert.IsTrue(reader.MoveNextValue());
var value = reader.Current;
Assert.AreEqual($"Value {recordNum}-{valueNum}", value.ToString());
}
Assert.IsFalse(reader.MoveNextValue());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
}
Assert.IsFalse(reader.MoveNextRecord());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
}
public void LongDelimeters()
{
const string ValueDelimeter = "This is a very long and terrible value delimeter";
const string RecordDelimeter = "This is a very long and terrible record delimeter";
const int NumRecords = 3;
const int NumValues = 4;
var builder = CreateTable(ValueDelimeter, RecordDelimeter, NumRecords, NumValues);
var reader = new DsvReader(builder.ToString(), ValueDelimeter, RecordDelimeter);
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
for (var recordNum = 0; recordNum < NumRecords; recordNum++)
{
Assert.IsTrue(reader.MoveNextRecord());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
for (var valueNum = 0; valueNum < NumValues; valueNum++)
{
Assert.IsTrue(reader.MoveNextValue());
var value = reader.Current;
Assert.AreEqual($"Value {recordNum}-{valueNum}", value.ToString());
}
Assert.IsFalse(reader.MoveNextValue());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
}
Assert.IsFalse(reader.MoveNextRecord());
Assert.IsTrue(reader.Current.IsEmpty);
Assert.AreEqual(-1, reader.CurrentIndex);
}
public int DelimiterSeparatedTextReader()
{
var totalLength = 0;
var reader = new DsvReader(this.str, CsvReader.ValueDelimeter, CsvReader.RecordDelimeter);
while (reader.MoveNextRecord())
{
while (reader.MoveNextValue())
{
var value = reader.Current;
totalLength += value.Length;
}
}
return(totalLength);
}