private static Column[] ParseColumns(OtpInputStream s)
{
int colNameCount = s.ReadListHead();
string[] columnNames = new string[colNameCount];
for (int i = 0; i < colNameCount; i++)
{
columnNames[i] = s.ReadBinaryAsString();
}
if (colNameCount > 0)
{
s.ReadNil();
}
int colTypeCount = s.ReadListHead();
ColumnType[] columnTypes = new ColumnType[colTypeCount];
for (int i = 0; i < colTypeCount; i++)
{
string a = s.ReadAtom();
columnTypes[i] = (ColumnType)Enum.Parse(typeof(ColumnType), a, true);
}
if (colTypeCount > 0)
{
s.ReadNil();
}
return(columnNames.Zip(columnTypes, (cname, ctype) => new Column(cname, ctype)).ToArray());
}
private static Row[] ParseRows(OtpInputStream s, Column[] cols)
{
int rowCount = s.ReadListHead();
Row[] rows = new Row[rowCount];
for (int i = 0; i < rowCount; i++)
{
rows[i] = ParseRow(s, cols);
}
if (rowCount > 0)
{
s.ReadNil();
}
return(rows);
}
private static Cell ParseCell(OtpInputStream s, int i, Column[] cols)
{
string msg;
Column col = cols[i];
byte tag = s.Peek();
switch (tag)
{
case OtpExternal.NilTag:
tag = s.Read1(); // NB: actually consume the byte
return(new Cell());
case OtpExternal.BinTag:
if (col.Type == ColumnType.Varchar || col.Type == ColumnType.Blob)
{
return(new Cell(s.ReadBinaryAsString()));
}
else
{
throw OnBadTag(tag, col, ColumnType.Varchar, ColumnType.Blob);
}
case OtpExternal.SmallIntTag:
case OtpExternal.IntTag:
case OtpExternal.SmallBigTag:
case OtpExternal.LargeBigTag:
long val = s.ReadLong();
switch (col.Type)
{
case ColumnType.SInt64:
return(new Cell(val, isUnixTimestamp: false));
case ColumnType.Timestamp:
return(new Cell(val, isUnixTimestamp: true));
default:
throw OnBadTag(tag, col, ColumnType.SInt64, ColumnType.Timestamp);
}
case OtpExternal.FloatTag:
case OtpExternal.NewFloatTag:
if (col.Type != ColumnType.Double)
{
throw OnBadTag(tag, col, ColumnType.Double);
}
return(new Cell(s.ReadDouble()));
case OtpExternal.AtomTag:
if (col.Type != ColumnType.Boolean)
{
throw OnBadTag(tag, col, ColumnType.Boolean);
}
return(new Cell(s.ReadBoolean()));
case OtpExternal.ListTag:
int arity = s.ReadNil();
if (arity == 0)
{
// null cell
return(new Cell());
}
else
{
msg = string.Format(
"Expected nil list, got one with arity {0}",
arity);
throw new InvalidOperationException(msg);
}
default:
msg = string.Format(
"Unknown cell type encountered, tag {0}, '{1}:{2}'",
tag,
col.Name,
col.Type);
throw new InvalidOperationException(msg);
}
}
private static Cell ParseCell(OtpInputStream s, int i, Column[] cols)
{
string msg;
Column col = cols[i];
byte tag = s.Peek();
switch (tag)
{
case OtpExternal.NilTag:
tag = s.Read1(); // NB: actually consume the byte
return new Cell();
case OtpExternal.BinTag:
if (col.Type == ColumnType.Varchar || col.Type == ColumnType.Blob)
{
return new Cell(s.ReadBinaryAsString());
}
else
{
throw OnBadTag(tag, col, ColumnType.Varchar, ColumnType.Blob);
}
case OtpExternal.SmallIntTag:
case OtpExternal.IntTag:
case OtpExternal.SmallBigTag:
case OtpExternal.LargeBigTag:
long val = s.ReadLong();
switch (col.Type)
{
case ColumnType.SInt64:
return new Cell(val, isUnixTimestamp: false);
case ColumnType.Timestamp:
return new Cell(val, isUnixTimestamp: true);
default:
throw OnBadTag(tag, col, ColumnType.SInt64, ColumnType.Timestamp);
}
case OtpExternal.FloatTag:
case OtpExternal.NewFloatTag:
if (col.Type != ColumnType.Double)
{
throw OnBadTag(tag, col, ColumnType.Double);
}
return new Cell(s.ReadDouble());
case OtpExternal.AtomTag:
if (col.Type != ColumnType.Boolean)
{
throw OnBadTag(tag, col, ColumnType.Boolean);
}
return new Cell(s.ReadBoolean());
case OtpExternal.ListTag:
int arity = s.ReadNil();
if (arity == 0)
{
// null cell
return new Cell();
}
else
{
msg = string.Format(
"Expected nil list, got one with arity {0}",
arity);
throw new InvalidOperationException(msg);
}
default:
msg = string.Format(
"Unknown cell type encountered, tag {0}, '{1}:{2}'",
tag,
col.Name,
col.Type);
throw new InvalidOperationException(msg);
}
}
private static Row[] ParseRows(OtpInputStream s, Column[] cols)
{
int rowCount = s.ReadListHead();
Row[] rows = new Row[rowCount];
for (int i = 0; i < rowCount; i++)
{
rows[i] = ParseRow(s, cols);
}
if (rowCount > 0)
{
s.ReadNil();
}
return rows;
}
private static Column[] ParseColumns(OtpInputStream s)
{
int colNameCount = s.ReadListHead();
string[] columnNames = new string[colNameCount];
for (int i = 0; i < colNameCount; i++)
{
columnNames[i] = s.ReadBinaryAsString();
}
if (colNameCount > 0)
{
s.ReadNil();
}
int colTypeCount = s.ReadListHead();
ColumnType[] columnTypes = new ColumnType[colTypeCount];
for (int i = 0; i < colTypeCount; i++)
{
string a = s.ReadAtom();
columnTypes[i] = (ColumnType)Enum.Parse(typeof(ColumnType), a, true);
}
if (colTypeCount > 0)
{
s.ReadNil();
}
return columnNames.Zip(columnTypes, (cname, ctype) => new Column(cname, ctype)).ToArray();
}
