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- {
- ML>p.p.s I also need a routine (preferably in Turbo Pascal 7 ASM) that saves t
- ML> content of the current screen in an ANSI file on the disk. I saw one
- ML> a while ago in SWAG, but I can't seem to find it now (I'm a dist site
- ML> but still can't find it).
-
- Also, since I didn't have anything better to do, I sat down and did a
- version of your screen->ANSI. It's rather primitive... it does a 80x24
- dump with auto-EOLn seensing, does no CRLF if the line is 80 chars long
- (relies on screen wrap) and no macroing. If you want to, you can add
- macroing, which replaces a number of spaces with a single ANSI 'set
- cursor' command. Well, here goes...
-
- =================================================================== }
-
- Procedure Xlate(var OutFile : text); {by Erik Anderson}
- {The screen is basically an array of elements, each element containing one
- a one-byte character and a one-byte color attribute}
- const
- NUMROWS = 25;
- NUMCOLS = 80;
- type
- ElementType = record
- ch : char;
- Attr : byte;
- end;
- ScreenType = array[1..NUMROWS,1..NUMCOLS] of ElementType;
-
- {The Attribute is structured as follows:
- bit 0: foreground blue element
- bit 1: " green element
- bit 2: " red element
- bit 3: high intensity flag
- bit 4: background blue element
- bit 5: " green element
- bit 6: " red element
- bit 7: flash flag
-
- The following constant masks help the program acess different parts
- of the attribute}
- const
- TextMask = $07; {0000 0111}
- BoldMask = $08; {0000 1000}
- BackMask = $70; {0111 0000}
- FlshMask = $80; {1000 0000}
- BackShft = 4;
-
- ESC = #$1B;
-
- {ANSI colors are not the same as IBM colors... this table fixes the
- discrepancy:}
- ANSIcolors : array[0..7] of byte = (0, 4, 2, 6, 1, 5, 3, 7);
-
- {This procedure sends the new attribute to the ANSI dump file}
- Procedure ChangeAttr(var Outfile : text; var OldAtr : byte; NewAtr : byte);
- var
- Connect : string[1]; {Is a seperator needed?}
- begin
- Connect := '';
- write(Outfile, ESC, '['); {Begin sequence}
- If (OldAtr AND (BoldMask+FlshMask)) <> {Output flash & blink}
- (NewAtr AND (BoldMask+FlshMask)) then begin
- write(Outfile, '0');
- If NewAtr AND BoldMask <> 0 then write(Outfile, ';1');
- If NewAtr AND FlshMask <> 0 then write(Outfile, ';5');
- OldAtr := $FF; Connect := ';'; {Force other attr's to print}
- end;
-
- If OldAtr AND BackMask <> NewAtr AND BackMask then begin
- write(OutFile, Connect,
- ANSIcolors[(NewAtr AND BackMask) shr BackShft] + 40);
- Connect := ';';
- end;
-
- If OldAtr AND TextMask <> NewAtr AND TextMask then begin
- write(OutFile, Connect,
- ANSIcolors[NewAtr AND TextMask] + 30);
- end;
-
- write(outfile, 'm'); {Terminate sequence}
- OldAtr := NewAtr;
- end;
-
- {Does this character need a changing of the attribute? If it is a space,
- then only the background color matters}
-
- Function AttrChanged(Attr : byte; ThisEl : ElementType) : boolean;
- var
- Result : boolean;
- begin
- Result := FALSE;
- If ThisEl.ch = ' ' then begin
- If ThisEl.Attr AND BackMask <> Attr AND BackMask then
- Result := TRUE;
- end else begin
- If ThisEl.Attr <> Attr then Result := TRUE;
- end;
- AttrChanged := Result;
- end;
-
- var
- Screen : ScreenType absolute $b800:0000;
- ThisAttr, TestAttr : byte;
- LoopRow, LoopCol, LineLen : integer;
- begin {Xlate}
- ThisAttr := $FF; {Force attribute to be set}
- For LoopRow := 1 to NUMROWS do begin
-
- LineLen := NUMCOLS; {Find length of line}
- While (LineLen > 0) and (Screen[LoopRow, LineLen].ch = ' ')
- and not AttrChanged($00, Screen[LoopRow, LineLen])
- do Dec(LineLen);
-
- For LoopCol := 1 to LineLen do begin {Send stream to file}
- If AttrChanged(ThisAttr, Screen[LoopRow, LoopCol])
- then ChangeAttr(Outfile, ThisAttr, Screen[LoopRow, LoopCol].Attr);
- write(Outfile, Screen[LoopRow, LoopCol].ch);
- end;
- If LineLen < 80 then writeln(OutFile); {else wraparound occurs}
- end;
- end; {Xlate}
-
- var
- OutFile : text;
- begin
- Assign(OutFile, 'dump.scn');
- Rewrite(OutFile);
- Xlate(OUtFile);
- Close(OUtFile);
- end.
-