From 6843acc51a2bca91eb5e686e88f940822a30d58e Mon Sep 17 00:00:00 2001 From: mysticbbs Date: Mon, 13 Feb 2012 18:45:09 -0500 Subject: [PATCH] Initial import --- mdl/m_term_ansi.pas | 307 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 307 insertions(+) create mode 100644 mdl/m_term_ansi.pas diff --git a/mdl/m_term_ansi.pas b/mdl/m_term_ansi.pas new file mode 100644 index 0000000..dcfc42b --- /dev/null +++ b/mdl/m_term_ansi.pas @@ -0,0 +1,307 @@ +{$I M_OPS.PAS} + +Unit m_Term_Ansi; + +Interface + +Uses + m_Output, + m_Socket_Class, + m_Strings; + +Type + TTermAnsi = Class + Screen : TOutput; + WasValid : Boolean; + Private + Client : TSocketClass; + State : Byte; + SavedX : Byte; + SavedY : Byte; + Options : String; + + Procedure CheckCode (Ch: Char); + Function ParseNumber : Integer; + Procedure ResetState; + Procedure CursorUp; + Procedure CursorMove; + Procedure CursorDown; + Procedure CursorRight; + Procedure CursorLeft; + Public + Constructor Create (Var Con: TOutput); + Destructor Destroy; Override; + Procedure Process (Ch: Char); + Procedure ProcessBuf (Var Buf; BufLen : Word); + Procedure SetReplyClient (Var Cli: TSocketClass); + End; + +Implementation + +Const + ColorTable : Array[30..47] of Byte = (0, 4, 2, 6, 1, 5, 3, 7, 0, 0, 0, 64, 32, 96, 16, 80, 48, 112); + +Constructor TTermAnsi.Create (Var Con: TOutput); +Begin + Inherited Create; + + Screen := Con; + Client := NIL; + WasValid := False; + + ResetState; +End; + +Destructor TTermAnsi.Destroy; +Begin + Inherited Destroy; +End; + +Procedure TTermAnsi.SetReplyClient (Var Cli: TSocketClass); +Begin + Client := Cli; +End; + +Function TTermAnsi.ParseNumber : Integer; +Var + Res : LongInt; + Str : String; +Begin + Val (Options, Result, Res); + + If Res = 0 Then + Options := '' + Else Begin + Str := Copy(Options, 1, Pred(Res)); + + Delete (Options, 1, Res); + Val (Str, Result, Res); + End; +End; + +Procedure TTermAnsi.ResetState; +Begin + State := 0; + Options := ''; +End; + +Procedure TTermAnsi.CursorMove; +Var + X : Byte; + Y : Byte; +Begin + Y := ParseNumber; + If Y = 0 Then Y := 1; + X := ParseNumber; + If X = 0 Then X := 1; + Screen.CursorXY (X, Y); + ResetState; +End; + +Procedure TTermAnsi.CursorUp; +Var + Y : Integer; + NewY : Integer; + Offset : Integer; +Begin + Offset := ParseNumber; + + If Offset = 0 Then Offset := 1; + + Y := Screen.CursorY; + + If (Y - Offset) < 1 Then + NewY := 1 + Else + NewY := Y - Offset; + + Screen.CursorXY (Screen.CursorX, NewY); + + ResetState; +End; + +Procedure TTermAnsi.CursorDown; +Var + NewY : Byte; +Begin + NewY := ParseNumber; + + If NewY = 0 Then NewY := 1; + + NewY := NewY + Screen.CursorY; + + Screen.CursorXY (Screen.CursorX, NewY); + + ResetState; +End; + +Procedure TTermAnsi.CursorRight; +Var + X : Integer; + Offset : Integer; +Begin + Offset := ParseNumber; + + If Offset = 0 Then Offset := 1; + + X := Screen.CursorX; + + If (X + Offset) > 80 Then Begin + Screen.WriteChar(#10); // force lf incase we have to scroll + Screen.CursorXY(X + Offset - 80, Screen.CursorY); + End Else + Screen.CursorXY (x + offset, Screen.CursorY); + + ResetState; +End; + +Procedure TTermAnsi.CursorLeft; +Var + X : Integer; + NewX : Integer; + Offset : Integer; +Begin + Offset := ParseNumber; + + If Offset = 0 Then offset := 1; + + X := Screen.CursorX; + + If (X - Offset) < 1 Then + NewX := 1 + Else + NewX := X - Offset; + + Screen.CursorXY (NewX, Screen.CursorY); + + ResetState; +End; + +Procedure TTermAnsi.CheckCode (Ch : Char); +Var + Temp : Byte; +Begin + Case Ch of + 'h' : ResetState; + '0'..'9', + '?', ';' : Options := Options + Ch; + 'H', 'f' : CursorMove; + 'A' : CursorUp; + 'B' : CursorDown; + 'C' : CursorRight; + 'D' : CursorLeft; + 'J' : Begin + Screen.ClearScreen; + ResetState; + End; + 'K' : Begin + Screen.ClearEOL; + ResetState; + End; + 'm' : Begin + If Length(Options) = 0 Then Begin + Screen.TextAttr := 7; + ResetState; + End Else + While Length(Options) > 0 Do Begin + Temp := ParseNumber; + Case Temp of + 0 : Screen.TextAttr := 7; + 1 : Screen.TextAttr := Screen.TextAttr OR $08; + 5 : Screen.TextAttr := Screen.TextAttr OR $80; + 7 : Begin + Screen.TextAttr := Screen.TextAttr AND $F7; + Screen.TextAttr := (((Screen.TextAttr AND $70) SHR 4) + ((Screen.TextAttr AND $7) SHL 4) + Screen.TextAttr AND $80); + End; + 30.. + 37: Screen.TextAttr := (Screen.TextAttr AND $F8 + ColorTable[Temp]); + 40.. + 47: Screen.TextAttr := (Screen.TextAttr AND $F + ColorTable[Temp]); + End; + End; + ResetState; + End; + 'n' : Begin + If Client <> NIL Then + Client.WriteStr(#27 + '[' + strI2S(Screen.CursorY) + ';' + strI2S(Screen.CursorX) + 'R'); + ResetState; + End; + 's' : Begin + SavedX := Screen.CursorX; + SavedY := Screen.CursorY; + ResetState; + End; + 'u' : Begin + Screen.CursorXY (SavedX, SavedY); + ResetState; + End; + Else + ResetState; + End; +END; + + +Procedure TTermAnsi.Process (Ch : Char); +Begin + WasValid := False; + + Case State of + 0 : Begin + Case Ch of + #0 : ; + #27 : State := 1; + #9 : Screen.CursorXY (Screen.CursorX + 8, Screen.CursorY); + #12 : Screen.ClearScreen; + Else + Screen.WriteChar(Ch); + State := 0; + WasValid := True; + End; + End; + 1 : If Ch = '[' Then Begin + State := 2; + Options := ''; + End Else + State := 0; + 2 : CheckCode(Ch); + Else + ResetState; + End; +End; + +Procedure TTermAnsi.ProcessBuf (Var Buf; BufLen : Word); +Var + Count : Word; + Data : Array[1..16384] of Char Absolute Buf; +Begin + For Count := 1 to BufLen Do Begin + WasValid := False; + + Case State of + 0 : Begin + Case Data[Count] of + #0 : ; + #27 : State := 1; + #9 : Screen.CursorXY (Screen.CursorX + 8, Screen.CursorY); + #12 : Screen.ClearScreen; + Else + Screen.WriteChar(Data[Count]); + WasValid := True; + State := 0; + End; + End; + 1 : If Data[Count] = '[' Then Begin + State := 2; + Options := ''; + End Else + State := 0; + 2 : CheckCode(Data[Count]); + Else + ResetState; + End; + End; + + Screen.BufFlush; +End; + +End.