internal void ReadpVm (IntPtr pVm, int version, SqliteCommand cmd)
{
int pN;
IntPtr pazValue;
IntPtr pazColName;
bool first = true;
int[] declmode = null;
while (true) {
bool hasdata = cmd.ExecuteStatement(pVm, out pN, out pazValue, out pazColName);
// For the first row, get the column information
if (first) {
first = false;
if (version == 3) {
// A decltype might be null if the type is unknown to sqlite.
decltypes = new string[pN];
declmode = new int[pN]; // 1 == integer, 2 == datetime
for (int i = 0; i < pN; i++) {
IntPtr decl = Sqlite.sqlite3_column_decltype16 (pVm, i);
if (decl != IntPtr.Zero) {
decltypes[i] = Marshal.PtrToStringUni (decl).ToLower(System.Globalization.CultureInfo.InvariantCulture);
if (decltypes[i] == "int" || decltypes[i] == "integer")
declmode[i] = 1;
else if (decltypes[i] == "date" || decltypes[i] == "datetime")
declmode[i] = 2;
}
}
}
columns = new string[pN];
for (int i = 0; i < pN; i++) {
string colName;
if (version == 2) {
IntPtr fieldPtr = Marshal.ReadIntPtr (pazColName, i*IntPtr.Size);
colName = Sqlite.HeapToString (fieldPtr, ((SqliteConnection)cmd.Connection).Encoding);
} else {
colName = Marshal.PtrToStringUni (Sqlite.sqlite3_column_name16 (pVm, i));
}
columns[i] = colName;
column_names_sens [colName] = i;
column_names_insens [colName] = i;
}
}
if (!hasdata) break;
object[] data_row = new object [pN];
for (int i = 0; i < pN; i++) {
if (version == 2) {
IntPtr fieldPtr = Marshal.ReadIntPtr (pazValue, i*IntPtr.Size);
data_row[i] = Sqlite.HeapToString (fieldPtr, ((SqliteConnection)cmd.Connection).Encoding);
} else {
switch (Sqlite.sqlite3_column_type (pVm, i)) {
case 1:
long val = Sqlite.sqlite3_column_int64 (pVm, i);
// If the column was declared as an 'int' or 'integer', let's play
// nice and return an int (version 3 only).
if (declmode[i] == 1 && val >= int.MinValue && val <= int.MaxValue)
data_row[i] = (int)val;
// Or if it was declared a date or datetime, do the reverse of what we
// do for DateTime parameters.
else if (declmode[i] == 2)
data_row[i] = DateTime.FromFileTime(val);
else
data_row[i] = val;
break;
case 2:
data_row[i] = Sqlite.sqlite3_column_double (pVm, i);
break;
case 3:
data_row[i] = Marshal.PtrToStringUni (Sqlite.sqlite3_column_text16 (pVm, i));
// If the column was declared as a 'date' or 'datetime', let's play
// nice and return a DateTime (version 3 only).
if (declmode[i] == 2)
data_row[i] = DateTime.Parse((string)data_row[i]);
break;
case 4:
int blobbytes = Sqlite.sqlite3_column_bytes16 (pVm, i);
IntPtr blobptr = Sqlite.sqlite3_column_blob (pVm, i);
byte[] blob = new byte[blobbytes];
Marshal.Copy (blobptr, blob, 0, blobbytes);
data_row[i] = blob;
break;
case 5:
data_row[i] = null;
break;
default:
throw new ApplicationException ("FATAL: Unknown sqlite3_column_type");
}
}
}
rows.Add (data_row);
}
}