nathanmcrae/sane-tsv
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Fix Typed TSV serialization

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And add inf serializing/parsing to floats
This commit is contained in:
Nathan McRae 2024-02-17 20:44:07 -08:00
parent ea77db46a6
commit dc0c300fdc
1 changed files with 113 additions and 55 deletions
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112
SaneTsv/SaneTsv.cs
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@ -394,19 +394,43 @@ public class SaneTsv
}
else if (parsed.ColumnTypes[j] == typeof(Float32Type))
{
if (!float.TryParse(fieldString, out float parsedFloat))
float parsedFloat;
if (!float.TryParse(fieldString, out parsedFloat))
{
if (fieldString == "-inf")
{
parsedFloat = float.NegativeInfinity;
}
else if (fieldString == "+inf")
{
parsedFloat = float.PositiveInfinity;
}
else
{
throw new Exception($"Field {j} on line {line} is not valid single-precision float");
}
}
parsedFields[j] = parsedFloat;
}
else if (parsed.ColumnTypes[j] == typeof(Float64Type))
{
if (!double.TryParse(fieldString, out double parsedDouble))
double parsedDouble;
if (!double.TryParse(fieldString, out parsedDouble))
{
if (fieldString == "-inf")
{
parsedDouble = float.NegativeInfinity;
}
else if (fieldString == "+inf")
{
parsedDouble = float.PositiveInfinity;
}
else
{
throw new Exception($"Field {j} on line {line} is not valid double-precision float");
}
}
parsedFields[j] = parsedDouble;
}
@ -725,7 +749,9 @@ public class SaneTsv
{
try
{
byte[] fieldEncoded;
byte[] fieldEncoded = null;
// Some fields definitely don't need escaping, so we add them directly to bytes
bool skipEscaping = false;
if (headerTypes[j] == typeof(StringType))
{
@ -734,15 +760,31 @@ public class SaneTsv
else if (headerTypes[j] == typeof(BooleanType))
{
bytes.AddRange((bool)data[i][j] ? TrueEncoded : FalseEncoded);
// In this case we know these values don't need escaping
continue;
skipEscaping = true;
}
else if (headerTypes[j] == typeof(Float32Type))
{
if (data[i][j] is float f)
{
if (float.IsNegativeInfinity(f))
{
bytes.AddRange(Encoding.UTF8.GetBytes("-inf"));
}
else if (float.IsPositiveInfinity(f))
{
bytes.AddRange(Encoding.UTF8.GetBytes("+inf"));
}
else
{
// See https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings#round-trip-format-specifier-r
bytes.AddRange(Encoding.UTF8.GetBytes(((float)data[i][j]).ToString("G9")));
// In this case we know these values don't need escaping
continue;
}
}
else
{
throw new InvalidCastException();
}
skipEscaping = true;
}
else if (headerTypes[j] == typeof(Float32LEType))
{
@ -761,11 +803,28 @@ public class SaneTsv
}
}
else if (headerTypes[j] == typeof(Float64Type))
{
if (data[i][j] is double d)
{
if (double.IsNegativeInfinity(d))
{
bytes.AddRange(Encoding.UTF8.GetBytes("-inf"));
}
else if (double.IsPositiveInfinity(d))
{
bytes.AddRange(Encoding.UTF8.GetBytes("+inf"));
}
else
{
// See https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings#round-trip-format-specifier-r
bytes.AddRange(Encoding.UTF8.GetBytes(((double)data[i][j]).ToString("G17")));
// In this case we know these values don't need escaping
continue;
bytes.AddRange(Encoding.UTF8.GetBytes((d).ToString("G17")));
}
}
else
{
throw new InvalidCastException();
}
skipEscaping = true;
}
else if (headerTypes[j] == typeof(Float64LEType))
{
@ -785,27 +844,23 @@ public class SaneTsv
}
else if (headerTypes[j] == typeof(UInt32Type))
{
bytes.AddRange(Encoding.UTF8.GetBytes(((UInt32)data[i][j]).ToString()));
// In this case we know these values don't need escaping
continue;
bytes.AddRange(Encoding.UTF8.GetBytes(((UInt32)(int)data[i][j]).ToString()));
skipEscaping = true;
}
else if (headerTypes[j] == typeof(UInt64Type))
{
bytes.AddRange(Encoding.UTF8.GetBytes(((UInt64)data[i][j]).ToString()));
// In this case we know these values don't need escaping
continue;
bytes.AddRange(Encoding.UTF8.GetBytes(((UInt64)(int)data[i][j]).ToString()));
skipEscaping = true;
}
else if (headerTypes[j] == typeof(Int32Type))
{
bytes.AddRange(Encoding.UTF8.GetBytes(((Int32)data[i][j]).ToString()));
// In this case we know these values don't need escaping
continue;
bytes.AddRange(Encoding.UTF8.GetBytes(((Int32)(int)data[i][j]).ToString()));
skipEscaping = true;
}
else if (headerTypes[j] == typeof(Int64Type))
{
bytes.AddRange(Encoding.UTF8.GetBytes(((Int64)data[i][j]).ToString()));
// In this case we know these values don't need escaping
continue;
bytes.AddRange(Encoding.UTF8.GetBytes(((Int64)(int)data[i][j]).ToString()));
skipEscaping = true;
}
else if (headerTypes[j] == typeof(BinaryType))
{
@ -816,6 +871,8 @@ public class SaneTsv
throw new Exception($"Unexpected column type {headerTypes[j]} for column {j}");
}
if (!skipEscaping)
{
for (int k = 0; k < fieldEncoded.Length; k++)
{
if (fieldEncoded[k] == '\n')
@ -843,15 +900,16 @@ public class SaneTsv
bytes.Add(fieldEncoded[k]);
}
}
if (j == headerNames.Count - 1)
{
bytes.Add((byte)'\n');
}
else
if (j < data[i].Count - 1)
{
bytes.Add((byte)'\t');
}
else if (i < data.Count - 1)
{
bytes.Add((byte)'\n');
}
}
catch (InvalidCastException e)
{