private static Stream /*!*/ OpenFileStream(RubyContext /*!*/ context, string /*!*/ path, string /*!*/ modeString)
{
FileMode mode;
FileAccess access;
// ignore "b":
bool preserveEndOfLines;
switch (RubyIO.ParseIOMode(modeString, out preserveEndOfLines))
{
case IOMode.ReadOnlyFromStart:
mode = FileMode.Open; access = FileAccess.Read;
break;
case IOMode.ReadWriteFromStart:
mode = FileMode.Open; access = FileAccess.ReadWrite;
break;
case IOMode.WriteOnlyTruncate:
mode = FileMode.Create; access = FileAccess.Write;
break;
case IOMode.ReadWriteTruncate:
mode = FileMode.Create; access = FileAccess.ReadWrite;
break;
case IOMode.WriteOnlyAppend:
mode = FileMode.Append; access = FileAccess.Write;
break;
case IOMode.ReadWriteAppend:
mode = FileMode.Append; access = FileAccess.ReadWrite;
break;
default:
throw RubyIO.IllegalMode(modeString);
}
return(context.DomainManager.Platform.OpenInputFileStream(path, mode, access, FileShare.ReadWrite));
}