public void Encode(ref Page Page)
{
if (Page == null || Page.TeleSoftwareID == null || Page.TeleSoftwareID <= 0)
{
return;
}
var file = TSFile.Load((int)Page.TeleSoftwareID);
if (file.FileSizeBytes <= 0)
{
return;
}
//using (var debug = new DebugLogger("NXtel.TSEncode"))
DebugLogger debug = null;
{
CurrentSeq = -1;
Pages = new List <Page>();
Page.PageType = PageTypes.TeleSoftware;
Page.PageRangeSequence = CurrentSeq++;
CurrentPageNo = Page.PageNo;
CurrentFrameNo = Page.FrameNo;
CurrentEscape = TelesoftEscapes.E0;
CurrentPage = Page;
Pages.Add(Page);
CreateNewPage(); // Add header page for later
string fn = (file.FileName ?? "").Trim();
if (string.IsNullOrWhiteSpace(fn))
{
fn = "Telesoftware";
}
fn = fn.Replace("|", "|E"); // Escape escape sequence if present in filename
string contents = "";
CreateNewPage();
contents = new string(' ', 40); // Blank line for NXtel header
contents += "|A"; // Start of telesoftware block
CurrentChecksum = 0;
contents += Checksum("|G" + CurrentPage.Frame + "|I"); // Frame letter of telesoftware block, terminated
//contents += Checksum("|L"); // EOL, completing header
int address = 0;
foreach (byte b in file.Contents)
{
string newChar = EscapeChar(b);
if (contents.Length + newChar.Length > PAGE_LEN)
{
contents += "|Z" + CurrentChecksum.ToString("D3");
CurrentPage.ConvertContentsFromString(contents);
debug.LogWithoutTimestamp("");
CreateNewPage();
//newChar = EscapeChar(b); // Recalculate from TelesoftEscapes.E0
contents = new string(' ', 40); // Blank line for NXtel header
contents += "|A"; // Start of telesoftware block
CurrentChecksum = 0;
contents += Checksum("|G" + CurrentPage.Frame + "|I"); // Frame letter of telesoftware block, terminated
//contents += Checksum("|L"); // EOL, completing header
contents += Checksum(newChar);
}
else
{
contents += Checksum(newChar);
}
debug.Log(address.ToString("X8"), b.ToString("X2") + " " + b.ToString().PadLeft(3)
+ " " + newChar.PadRight(6) + CurrentEscape.ToString());
address++;
}
contents += Checksum("|F");
contents += "|Z" + CurrentChecksum.ToString("D3"); // end of frame plus checksum
CurrentPage.ConvertContentsFromString(contents);
// Calculate header contents
contents = new string(' ', 40); // Blank line for NXtel header
contents += "|A"; // Start of telesoftware block
CurrentChecksum = 0;
contents += Checksum("|G" + Pages[1].Frame); // Frame letter of telesoftware block
contents += Checksum("|I" + fn + "|L"); // Telesoftware filename
contents += Checksum((Pages.Count - 2).ToString("D3")); // header frame count
contents += "|Z"; // end of telesoftware block
contents += CurrentChecksum.ToString("D3"); // header checksum
Pages[1].ConvertContentsFromString(contents);
Page.PageRange = new NXtelData.Pages();
Page.PageRange.AddRange(Pages);
var lastPage = Pages[Pages.Count - 1];
Pages[0].ToPageNo = lastPage.PageNo;
Pages[0].ToFrameNo = lastPage.FrameNo;
Pages[0].Routing.AddOrUpdate((byte)RouteKeys.Enter, Pages[0].NextPageNo, Pages[0].NextFrameNo);
foreach (var page in Pages)
{
page.PageRangeCount = Pages.Count;
}
PageCache.Add(Pages[0]);
}
}
private string EscapeChar(byte Byte, bool NoEscaping = false, DebugLogger debug = null)
{
string rv = "";
if (!NoEscaping)
{
if (Byte == Convert.ToByte('|')) // Escape | as |E in the body
{
return(EscapeChar(Convert.ToByte('|'), true) + EscapeChar(Convert.ToByte('E'), true));
}
if (Byte == Convert.ToByte('}')) // Escape ¾ as |¾ in the body
{
return(EscapeChar(Convert.ToByte('|'), true) + EscapeChar(Convert.ToByte('}'), true));
}
if (Byte == Convert.ToByte(' ')) // Escape space as ¾ in the body, allowing lines with trailing spaces to be truncated
{
return(EscapeChar(Convert.ToByte('}'), true));
}
if (Byte == Convert.ToByte('}')) // Escape } as |} in the body
{
return(EscapeChar(Convert.ToByte('|'), true) + EscapeChar(Convert.ToByte('}'), true));
}
}
if (Byte >= 0 && Byte <= 31) // 00..1F
{
if (CurrentEscape != TelesoftEscapes.E1)
{
CurrentEscape = TelesoftEscapes.E1;
rv += "|1";
}
rv += Convert.ToChar(Convert.ToByte(Convert.ToInt32(Byte) + 64));
}
else if (Byte >= 32 && Byte <= 127) // 20..7F
{
if (CurrentEscape != TelesoftEscapes.E0)
{
CurrentEscape = TelesoftEscapes.E0;
rv += "|0";
}
rv += Convert.ToChar(Byte);
}
else if (Byte >= 128 && Byte <= 159) // 80..9F
{
if (CurrentEscape != TelesoftEscapes.E2)
{
CurrentEscape = TelesoftEscapes.E2;
rv += "|2";
}
rv += Convert.ToChar(Convert.ToByte(Convert.ToInt32(Byte) - 64));
}
else if (Byte >= 160 && Byte <= 191) // A0..BF
{
if (CurrentEscape != TelesoftEscapes.E3)
{
CurrentEscape = TelesoftEscapes.E3;
rv += "|3";
}
rv += Convert.ToChar(Convert.ToByte(Convert.ToInt32(Byte) - 96));
}
else if (Byte >= 192 && Byte <= 223) // C0..DF
{
if (CurrentEscape != TelesoftEscapes.E4)
{
CurrentEscape = TelesoftEscapes.E4;
rv += "|4";
}
rv += Convert.ToChar(Convert.ToByte(Convert.ToInt32(Byte) - 128));
}
else if (Byte >= 224 && Byte <= 255) // E0..FF
{
if (CurrentEscape != TelesoftEscapes.E5)
{
CurrentEscape = TelesoftEscapes.E5;
rv += "|5";
}
rv += Convert.ToChar(Convert.ToByte(Convert.ToInt32(Byte) - 160));
}
else
{
throw new InvalidOperationException("Byte is outside 0-255 range.");
}
return(rv);
}
