/// <summary>
/// Creates a new RDY file object.
/// </summary>
public static RdyFile Create(char tableType, int tableId, int recordSize, int keyLength = 0, int keyOffset = 0, bool sorted = false, bool packed = false, char tableVersion = 'A')
{
if (recordSize < 0 || recordSize > 99)
throw new ArgumentOutOfRangeException("recordSize", "Invalid record size for RDY file.");
var header = RdyHeader.Create(tableType, tableId, recordSize, keyLength, keyOffset, sorted, packed, tableVersion);
var rdy = new RdyFile {Header = header, _records = new List<RdyRecord>()};
return rdy;
}
public SystemParameters(RdyFile rdyFile)
{
if (rdyFile.Header.TableType != 'p' || rdyFile.Header.TableId != 1)
throw new ArgumentException("The file should be for table p001 only.");
if (rdyFile.Header.RecordCount != 1)
throw new ArgumentException("The file should have exactly one record.");
if (rdyFile.Header.RecordSize != rdyFile.Records[0].Data.Length)
throw new ArgumentException("The record length does not match the value specified in the header.");
_parameters = Parse(rdyFile.Records[0].Data);
}
public SystemParameters(RdyFile rdyFile)
{
if (rdyFile.Header.TableType != 'p' || rdyFile.Header.TableId != 1)
{
throw new ArgumentException("The file should be for table p001 only.");
}
if (rdyFile.Header.RecordCount != 1)
{
throw new ArgumentException("The file should have exactly one record.");
}
if (rdyFile.Header.RecordSize != rdyFile.Records[0].Data.Length)
{
throw new ArgumentException("The record length does not match the value specified in the header.");
}
_parameters = Parse(rdyFile.Records[0].Data);
}
/// <summary>
/// Returns an awaitable task that reads an RDY file from an input stream.
/// </summary>
internal static async Task <RdyFile> ReadAsync(Stream stream, bool force = false)
{
if (stream == null)
{
throw new ArgumentNullException("stream", "The input stream cannot be null.");
}
if (!stream.CanRead)
{
throw new InvalidOperationException("Could not read from the input stream.");
}
var rdy = new RdyFile();
using (var reader = new StreamReader(stream))
{
// Read and parse the header
var header = await rdy.ReadHeaderAsync(reader);
rdy.Header = RdyHeader.Parse(header, force);
// See if we are working with a directory file
if (rdy.Header.TableType == 'z')
{
rdy.IsDirectoryFile = true;
// Put data back in the buffer
rdy._buffer.Insert(0, header.Substring(9));
// Read the body as directory data
await rdy.ReadDirBodyAsync(reader);
}
else
{
// Read and load the records in the body
await rdy.ReadBodyAsync(reader, force);
}
}
return(rdy);
}
/// <summary>
/// Returns an awaitable task that reads an RDY file from an input stream.
/// </summary>
internal static async Task<RdyFile> ReadAsync(Stream stream, bool force = false)
{
if (stream == null)
throw new ArgumentNullException("stream", "The input stream cannot be null.");
if (!stream.CanRead)
throw new InvalidOperationException("Could not read from the input stream.");
var rdy = new RdyFile();
using (var reader = new StreamReader(stream))
{
// Read and parse the header
var header = await rdy.ReadHeaderAsync(reader);
rdy.Header = RdyHeader.Parse(header, force);
// See if we are working with a directory file
if (rdy.Header.TableType == 'z')
{
rdy.IsDirectoryFile = true;
// Put data back in the buffer
rdy._buffer.Insert(0, header.Substring(9));
// Read the body as directory data
await rdy.ReadDirBodyAsync(reader);
}
else
{
// Read and load the records in the body
await rdy.ReadBodyAsync(reader, force);
}
}
return rdy;
}
/// <summary>
/// Returns an awaitable task that uploads an RDY file object to the terminal.
/// </summary>
/// <param name="rdy">The RDY file object.</param>
/// <param name="replace">True to replace any existing table. False to throw an exception if the table exists already. (True by default.)</param>
/// <param name="force">True to upload the file even if it fails validation. (False by default.)</param>
public async Task UploadTableFromRdyAsync(RdyFile rdy, bool replace = true, bool force = false)
{
// make sure we're not uploading a directory file
if (rdy.IsDirectoryFile)
throw new InvalidOperationException("Cannot upload a directory file to the terminal.");
// calculate how many blocks we'll need to send
var totalBlocks = (int)Math.Ceiling(rdy.Header.TotalCharacters / (double)MaxBlockSize);
var blockNumber = 1;
// create a buffer and append the header
var buffer = new StringBuilder(MaxBlockSize * 2);
buffer.Append(rdy.Header);
// get the table information from the header
var tableType = rdy.Header.TableType;
var tableId = rdy.Header.TableId;
// reset the progress info
OnProgressChanged(new UploadProgressChangedEventArgs(0, totalBlocks, rdy.Filename));
foreach (var record in rdy.Records)
{
// append the record to the buffer
buffer.Append(record.Data.PadRight(rdy.Header.RecordSize));
// don't send the buffer until we have a full block
if (buffer.Length < MaxBlockSize)
continue;
// cut a block from the buffer and send it
var block = buffer.Cut(0, MaxBlockSize);
await SendBlockAsync(tableType, tableId, blockNumber, totalBlocks, block, replace, rdy.Filename);
blockNumber++;
}
// send a partial block if there is any data remaining in the buffer
if (buffer.Length > 0)
{
var block = buffer.ToString();
await SendBlockAsync(tableType, tableId, blockNumber, totalBlocks, block, replace, rdy.Filename);
}
}
