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termEmulation.c
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1992-08-18
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/*
** $Id: termEmulation.c,v 1.3 92/08/15 20:13:55 olsen Sta Locker: olsen $
** $Revision: 1.3 $
** $Date: 92/08/15 20:13:55 $
**
** Terminal emulation (parsing and processing) routines
**
** Copyright © 1990-1992 by Olaf `Olsen' Barthel & MXM
** All Rights Reserved
*/
#include "termGlobal.h"
/* This structure describes an ANSI control sequence. */
struct ControlCode
{
UBYTE FirstChar;
UBYTE *Match;
UBYTE LastChar;
BYTE ExactSize;
UBYTE * (* __regargs Func)(UBYTE *Buffer);
};
#define NUM_CODES (sizeof(ANSICode) / sizeof(struct ControlCode))
/* How many characters we will keep in the scan buffer. */
#define MAX_SCAN_SIZE 256
/* Flag indicating whether the cursor has already been
* erased or not.
*/
STATIC BYTE CursorEnabled = FALSE;
/* Global string buffer and backup style. */
STATIC UBYTE GlobalBuffer[40],StyleType = FS_NORMAL;
/* Cursor backup data. */
STATIC struct CursorData CursorBackup;
/* A couple of internally referenced variables. */
STATIC BYTE CharsInBuffer = 0,
ScanStep = 0;
STATIC UBYTE SaveBuffer[MAX_SCAN_SIZE + 1];
/* Character access tables. */
STATIC UBYTE Table0[256] =
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
STATIC UBYTE Table1[256] =
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
STATIC UBYTE Table2[256] =
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,0,1,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
STATIC UBYTE Table3[256] =
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,1,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
STATIC UBYTE Table4[256] =
{
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,0,0,0,1,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
/* This follows the control code information. */
struct ControlCode ANSICode[] =
{
/* Single Character Sequences. */
'D', Table0, 0 , 1, (APTR)CursorScrollDown,
'M', Table0, 0 , 1, (APTR)CursorScrollUp,
'E', Table0, 0 , 1, (APTR)NextLine,
'7', Table0, 0 , 1, (APTR)SaveCursor,
'8', Table0, 0 , 1, (APTR)LoadCursor,
'=', Table0, 0 , 1, (APTR)NumericAppMode,
'>', Table0, 0 , 1, (APTR)NumericAppMode,
'N', Table0, 0 , 1, (APTR)Ignore,
'O', Table0, 0 , 1, (APTR)Ignore,
'H', Table0, 0 , 1, (APTR)SetTab,
'Z', Table0, 0 , 1, (APTR)RequestTerminal,
'c', Table0, 0 , 1, (APTR)Reset,
'<', Table0, 0 , 1, (APTR)Ignore,
'~', Table0, 0 , 1, (APTR)Ignore,
'n', Table0, 0 , 1, (APTR)Ignore,
'}', Table0, 0 , 1, (APTR)Ignore,
'o', Table0, 0 , 1, (APTR)Ignore,
'|', Table0, 0 , 1, (APTR)Ignore,
/* Double Character Sequences. */
'[', Table0, 's', 2, (APTR)SaveCursor,
'[', Table0, 'u', 2, (APTR)LoadCursor,
'(', Table0, 'A', 2, (APTR)FontStuff,
'(', Table0, 'B', 2, (APTR)FontStuff,
'(', Table0, '0', 2, (APTR)FontStuff,
')', Table0, 'A', 2, (APTR)FontStuff,
')', Table0, 'B', 2, (APTR)FontStuff,
')', Table0, '0', 2, (APTR)FontStuff,
'#', Table0, '3', 2, (APTR)ScaleFont,
'#', Table0, '4', 2, (APTR)ScaleFont,
'#', Table0, '5', 2, (APTR)ScaleFont,
'#', Table0, '6', 2, (APTR)ScaleFont,
'#', Table0, '8', 2, (APTR)AlignmentTest,
' ', Table0, 'F', 2, (APTR)Ignore,
' ', Table0, 'G', 2, (APTR)Ignore,
/* Multiple Character Sequence. */
'[', Table3, 'i', 0, (APTR)PrinterController,
'[', Table3, 'n', 0, (APTR)RequestInformation,
'[', Table3, 'c', 0, (APTR)RequestTerminal,
'[', Table3, 'h', 0, (APTR)SetSomething,
'[', Table3, 'l', 0, (APTR)SetSomething,
'[', Table4, 'h', 0, (APTR)Ignore,
'[', Table1, 'A', 0, (APTR)MoveCursor,
'[', Table1, 'B', 0, (APTR)MoveCursor,
'[', Table1, 'C', 0, (APTR)MoveCursor,
'[', Table1, 'D', 0, (APTR)MoveCursor,
'[', Table1, 'K', 0, (APTR)EraseLine,
'[', Table1, 'J', 0, (APTR)EraseScreen,
'[', Table1, 'P', 0, (APTR)EraseCharacters,
'[', Table1, '@', 0, (APTR)InsertCharacters,
'[', Table1, 'L', 0, (APTR)InsertLine,
'[', Table1, 'M', 0, (APTR)ClearLine,
'[', Table1, 'g', 0, (APTR)SetTabs,
'[', Table1, 'q', 0, (APTR)Ignore,
'[', Table2, 'H', 0, (APTR)SetAbsolutePosition,
'[', Table2, 'f', 0, (APTR)SetAbsolutePosition,
'[', Table2, 'm', 0, (APTR)SetAttributes,
'[', Table2, 'y', 0, (APTR)Ignore,
'[', Table2, 'r', 0, (APTR)SetRegion,
'[', Table1, 'S', 0, (APTR)ScrollUp,
'[', Table1, 'T', 0, (APTR)ScrollDown
};
/* DoCancel():
*
* Cancel any currently scanned sequence.
*/
BYTE
DoCancel()
{
InSequence = FALSE;
CharsInBuffer = ScanStep = 0;
return(FALSE);
}
/* CSIFake():
*
* This routine was added to support 8-bit control
* sequences introduced by a CSI character.
*/
VOID
CSIFake()
{
/* Reset scanner */
DoCancel();
/* Perform as if ESC [ had been transmitted. */
InSequence = ParseCode('[');
}
/* ParseCode(UBYTE c):
*
* Input: A character to be passed through the ANSI code
* parser.
*
* Output: FALSE if input characters did form a valid ANSI
* control sequence or if input characters did not
* form an ANSI control sequence at all.
*
* TRUE if input characters did possibly introduce
* a valid ANSI control sequence.
*/
BYTE __regargs
ParseCode(UBYTE c)
{
register WORD i;
/* ScanStep = 0: This is the first character
* to introduce a control sequence.
*/
if(!ScanStep)
{
/* Scan all available codes and try to find
* a match.
*/
for(i = 0 ; i < NUM_CODES ; i++)
{
/* This character may introduce a
* control sequence.
*/
if(ANSICode[i] . FirstChar == c)
{
/* If this is a single
* character control sequence
* call the approriate function
* and exit immediately.
*/
if(ANSICode[i] . ExactSize == 1)
{
if(Config . Emulation != EMULATION_ATOMIC)
{
UBYTE *SomeString;
SaveBuffer[CharsInBuffer++] = c;
SaveBuffer[CharsInBuffer ] = 0;
if(SomeString = (*ANSICode[i] . Func)(SaveBuffer))
SerWrite(SomeString,strlen(SomeString));
}
CharsInBuffer = ScanStep = 0;
return(FALSE);
}
else
{
/* The length of this control
* sequence is greater than
* a single character. Save
* the input character and
* return.
*/
ScanStep = i;
SaveBuffer[CharsInBuffer++] = c;
return(TRUE);
}
}
}
}
else
{
if(CharsInBuffer < MAX_SCAN_SIZE)
{
/* Scan the remaining codes for a match. */
for(i = ScanStep ; i < NUM_CODES ; i++)
{
/* This sequence begins with the
* same character the parser was
* initialized with, so let's take
* a look at it.
*/
if(ANSICode[i] . FirstChar == SaveBuffer[0])
{
/* This character is supposed to
* terminate the sequence, so exit.
*/
if(ANSICode[i] . LastChar == c)
{
if(Config . Emulation != EMULATION_ATOMIC)
{
UBYTE *SomeString;
SaveBuffer[CharsInBuffer++] = c;
SaveBuffer[CharsInBuffer ] = 0;
if(SomeString = (*ANSICode[i] . Func)(SaveBuffer))
SerWrite(SomeString,strlen(SomeString));
}
CharsInBuffer = ScanStep = 0;
return(FALSE);
}
else
{
/* If this character is part of
* a legal sequence store it
* and return.
*/
if(ANSICode[i] . Match[c])
{
ScanStep = i;
SaveBuffer[CharsInBuffer++] = c;
return(TRUE);
}
}
}
}
}
}
/* Return failure. */
CharsInBuffer = ScanStep = 0;
return(FALSE);
}
/* GetFontWidth():
*
* Get the font width of the current line.
*/
STATIC WORD
GetFontWidth()
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
if(Config . FontScale == SCALE_HALF)
return(TextFontWidth / 2);
else
return(TextFontWidth);
}
else
{
if(Config . FontScale == SCALE_HALF)
return(TextFontWidth);
else
return(TextFontWidth * 2);
}
}
/* ColourValue(UWORD Colour):
*
* Calculate the value of a given colour (brightness).
*/
STATIC WORD __regargs
ColourValue(UWORD Colour)
{
BYTE Red,Green,Blue;
WORD Sum;
Red = Colour >> 8;
Green = (Colour >> 4) & 0xF;
Blue = Colour & 0xF;
Sum = (Red + Green + Blue) / 3;
return(Sum);
}
/* ScrollRegion(WORD Direction):
*
* Scroll the current scroll region up or down.
*/
STATIC VOID __regargs
ScrollRegion(WORD Direction)
{
WORD RegionTop,RegionBottom,RegionLines;
LONG Dir,MinY,MaxY;
if(Direction < 0)
Dir = -Direction;
else
Dir = Direction;
if(RegionSet)
{
MinY = Top * TextFontHeight;
MaxY = (Bottom + 1) * TextFontHeight - 1;
RegionTop = Top;
RegionBottom = Bottom + 1;
RegionLines = Bottom - Top + 1;
}
else
{
MinY = 0;
MaxY = (LastLine + 1) * TextFontHeight - 1;
RegionTop = 0;
RegionBottom = LastLine + 1;
RegionLines = LastLine + 1;
}
BackupRender();
SetBPen(RPort,0);
RasterScrollRegion(Direction,RegionTop,RegionBottom,RegionLines);
if(Dir > RegionLines)
{
/* All that is needed is to delete the lines
* note: not too brilliant for smooth scroll
*/
ScrollLineRectFill(RPort,0,MinY,LastPixel,MaxY);
}
else
{
if(Config . JumpScroll || (TextFontHeight & 1))
ScrollLineRaster(RPort,0,Direction * TextFontHeight,0,MinY,LastPixel,MaxY);
else
{
WORD Lines = Dir * (TextFontHeight / 2);
if(Direction < 0)
{
while(Lines--)
{
WaitTOF();
ScrollLineRaster(RPort,0,-2,0,MinY,LastPixel,MaxY);
}
}
else
{
while(Lines--)
{
WaitTOF();
ScrollLineRaster(RPort,0,2,0,MinY,LastPixel,MaxY);
}
}
}
}
BackupRender();
}
/* LastChar(UBYTE *Buffer):
*
* Return the last character in a string.
*/
STATIC UBYTE __regargs
LastChar(UBYTE *Buffer)
{
WORD Offset = 0;
while(Buffer[Offset])
Offset++;
return(Buffer[Offset - 1]);
}
/* ReadValue(UBYTE *Buffer,BYTE *Value):
*
* Parse a buffer for numbers and return a pointer
* to the next buffer element to contain additional
* information.
*/
STATIC UBYTE * __regargs
ReadValue(UBYTE *Buffer,WORD *Value)
{
while((*Buffer < '0' || *Buffer > '9') && (*Buffer != ';') && *Buffer)
Buffer++;
if(*Buffer)
{
*Value = 0;
while(*Buffer >= '0' && *Buffer <= '9')
*Value = (*Value * 10) + (*Buffer++ - '0');
}
else
*Value = -1;
if(*Buffer == ';' || *Buffer == ' ')
return(&Buffer[1]);
else
return(NULL);
}
/* ClipBlitCursor(UBYTE DoClip,UBYTE DoMove):
*
* Change the appearance of the cursor.
*/
VOID __regargs
ClipBlitCursor(UBYTE DoClip,UBYTE DoMove)
{
if(DoClip || DoMove)
{
STATIC WORD LastCursorX = -1,LastCursorY = -1;
STATIC LONG DestX,DestY,XSize,X,Y,Column;
if(CursorY != LastCursorY || CursorX != LastCursorX)
{
if(CursorY != LastCursorY)
{
if(CursorY > LastLine)
Y = LastLine;
else
{
if(CursorY < 0)
Y = 0;
else
Y = CursorY;
}
if(RasterAttr[Y] == SCALE_ATTR_NORMAL)
Column = LastColumn;
else
Column = ((LastColumn + 1) / 2) - 1;
DestY = Y * TextFontHeight;
LastCursorY = CursorY;
}
LastCursorX = CursorX;
if(CursorX > Column)
X = Column;
else
{
if(CursorX < 0)
X = 0;
else
X = CursorX;
}
if(Config . FontScale == SCALE_NORMAL)
{
if(RasterAttr[Y] == SCALE_ATTR_NORMAL)
{
DestX = X * TextFontWidth;
XSize = TextFontWidth;
}
else
{
DestX = X * TextFontWidth * 2;
XSize = TextFontWidth * 2;
if(X > ((LastColumn + 1) / 2) - 1)
X = ((LastColumn + 1) / 2) - 1;
}
}
else
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
DestX = X * TextFontWidth / 2;
XSize = TextFontWidth / 2;
}
else
{
DestX = X * TextFontWidth;
XSize = TextFontWidth;
if(X > ((LastColumn + 1) / 2) - 1)
X = ((LastColumn + 1) / 2) - 1;
}
}
}
if(DoMove)
Move(RPort,DestX,DestY + TextFontBase);
if(DoClip)
{
BYTE Depth = RPort -> BitMap -> Depth;
if(Depth > 1 && !(Config . DisableBlinking & TERMINAL_FASTER))
{
STATIC UBYTE DepthMasks[5] = { 0,1,3,7,15 };
UBYTE Mask = RPort -> Mask;
SetWrMsk(RPort,DepthMasks[Depth]);
ClipBlit(RPort,0,0,RPort,DestX,DestY,XSize,TextFontHeight,0x50);
SetWrMsk(RPort,Mask);
}
else
ClipBlit(RPort,0,0,RPort,DestX,DestY,XSize,TextFontHeight,0x50);
}
}
}
/* ClearCursor():
*
* Clear the cursor image.
*/
VOID
ClearCursor()
{
if(CursorEnabled)
{
ClipBlitCursor(TRUE,FALSE);
CursorEnabled = FALSE;
}
}
/* DrawCursor():
*
* Explicitely (re-)draw the cursor image.
*/
VOID
DrawCursor()
{
if(!CursorEnabled)
{
ClipBlitCursor(TRUE,FALSE);
CursorEnabled = TRUE;
}
}
/* SetCursor():
*
* Move the cursor to a given location.
*/
VOID
SetCursor()
{
ClipBlitCursor(!CursorEnabled,TRUE);
CursorEnabled = TRUE;
}
/* BackupRender():
*
* Save current draw modes, pen and position or restore
* the data.
*/
VOID
BackupRender()
{
STATIC BYTE Called = FALSE;
STATIC UBYTE DrMd,FgPen,BgPen;
STATIC UWORD CpX,CpY;
STATIC UBYTE Style;
if(!Called)
{
DrMd = RPort -> DrawMode;
FgPen = RPort -> FgPen;
BgPen = RPort -> BgPen;
CpX = RPort -> cp_x;
CpY = RPort -> cp_y;
Style = StyleType;
Called = TRUE;
}
else
{
if(RPort -> DrawMode != DrMd)
SetDrMd(RPort,DrMd);
if(RPort -> FgPen != FgPen)
SetAPen(RPort,FgPen);
if(RPort -> BgPen != BgPen)
SetBPen(RPort,BgPen);
if(RPort -> cp_x != CpX || RPort -> cp_y != CpY)
Move(RPort,CpX,CpY);
if(Style != StyleType)
{
SetSoftStyle(RPort,Style,0xFF);
StyleType = Style;
}
Called = FALSE;
}
}
/* ShiftChar(LONG Size):
*
* Simulate character insertion at the current cursor
* position by shifting the whole line Size times eight pixels
* to the right.
*/
VOID __regargs
ShiftChar(LONG Size)
{
LONG DeltaX,MinX,MinY;
MinY = CursorY * TextFontHeight;
if(Config . FontScale == SCALE_NORMAL)
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
DeltaX = Size * TextFontWidth;
MinX = CursorX * TextFontWidth;
}
else
{
DeltaX = Size * TextFontWidth * 2;
MinX = CursorX * TextFontWidth * 2;
}
}
else
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
DeltaX = Size * TextFontWidth / 2;
MinX = CursorX * TextFontWidth / 2;
}
else
{
DeltaX = Size * TextFontWidth;
MinX = CursorX * TextFontWidth;
}
}
if(MinX < Window -> Width)
{
BackupRender();
SetBPen(RPort,0);
ScrollLineRaster(RPort,-DeltaX,0,MinX,MinY,LastPixel,MinY + TextFontHeight - 1);
BackupRender();
}
}
/* Ignore():
*
* Do nothing, return immediately.
*/
UBYTE *
Ignore()
{
return(NULL);
}
/* ScrollDown(UBYTE *Buffer):
*
* Scroll the current region down.
*/
UBYTE * __regargs
ScrollDown(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
if(Value < 1)
Value = 1;
ClearCursor();
ScrollRegion(-Value);
DrawCursor();
return(NULL);
}
/* ScrollUp(UBYTE *Buffer):
*
* Scroll the current region up.
*/
UBYTE * __regargs
ScrollUp(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
if(Value < 1)
Value = 1;
ClearCursor();
ScrollRegion(Value);
DrawCursor();
return(NULL);
}
/* CursorScrollDown():
*
* Move cursor down and scroll region if necessary.
*/
UBYTE *
CursorScrollDown()
{
ClearCursor();
DownLine();
SetCursor();
return(NULL);
}
VOID
DownLine()
{
UBYTE InRegion = TRUE;
WORD Hit = LastLine;
if(RegionSet)
{
if(CursorY <= Bottom)
Hit = Bottom;
else
InRegion = FALSE;
}
if(CursorY == Hit)
{
if(InRegion)
ScrollRegion(1);
}
else
{
CursorY++;
if(CursorY > LastLine)
CursorY = LastLine;
}
}
/* CursorScrollUp():
*
* Move cursor up and scroll region if necessary.
*/
UBYTE *
CursorScrollUp()
{
BYTE InRegion = TRUE;
WORD Hit = 0;
ClearCursor();
if(RegionSet)
{
if(CursorY >= Top)
Hit = Top;
else
InRegion = FALSE;
}
if(CursorY == Hit)
{
if(InRegion)
ScrollRegion(-1);
}
else
{
if(--CursorY < 0)
CursorY = 0;
}
SetCursor();
return(NULL);
}
/* NextLine():
*
* Do something like CR+LF.
*/
UBYTE *
NextLine()
{
ClearCursor();
CursorX = 0;
DownLine();
SetCursor();
return(NULL);
}
/* SaveCursor():
*
* Save cursor position and rendering attributes.
*/
UBYTE *
SaveCursor()
{
CursorBackup . Charset = Charset;
CursorBackup . Attributes = Attributes;
CursorBackup . CursorX = CursorX;
CursorBackup . CursorY = CursorY;
CursorBackup . Style = StyleType;
CursorBackup . FgPen = RPort -> FgPen;
CursorBackup . BgPen = RPort -> BgPen;
CursorBackup . CurrentFont = CurrentFont;
return(NULL);
}
/* FontStuff(UBYTE *Buffer):
*
* Set the drawing font (standard characters/line).
*/
UBYTE * __regargs
FontStuff(UBYTE *Buffer)
{
BYTE Changed = FALSE;
if(Buffer[0] == '(')
{
switch(LastChar(Buffer))
{
case 'A':
case 'B': if(CharMode[0] != TABLE_ASCII && !Charset)
Changed = TRUE;
CharMode[0] = TABLE_ASCII;
break;
case '0': if(CharMode[0] != TABLE_GFX && !Charset)
Changed = TRUE;
CharMode[0] = TABLE_GFX;
break;
}
}
if(Buffer[0] == ')')
{
switch(LastChar(Buffer))
{
case 'A':
case 'B': if(CharMode[1] != TABLE_ASCII && Charset == 1)
Changed = TRUE;
CharMode[1] = TABLE_ASCII;
break;
case '0': if(CharMode[1] != TABLE_GFX && Charset == 1)
Changed = TRUE;
CharMode[1] = TABLE_GFX;
break;
}
}
if(Changed)
{
BackupRender();
if(Charset)
DoShiftIn();
else
DoShiftOut();
BackupRender();
}
return(NULL);
}
/* LoadCursor():
*
* Load cursor position and rendering attributes.
*/
UBYTE *
LoadCursor()
{
ClearCursor();
Charset = CursorBackup . Charset;
CharMode[0] = CursorBackup . CharMode[0];
CharMode[1] = CursorBackup . CharMode[1];
if(CurrentFont != CursorBackup . CurrentFont)
{
CurrentFont = CursorBackup . CurrentFont;
SetFont(RPort,CurrentFont);
}
if(StyleType != CursorBackup . Style)
{
SetSoftStyle(RPort,CursorBackup . Style,0xFF);
StyleType = CursorBackup . Style;
}
if(RPort -> FgPen != CursorBackup . FgPen)
SetAPen(RPort,CursorBackup . FgPen);
if(RPort -> BgPen != CursorBackup . BgPen)
SetBPen(RPort,CursorBackup . BgPen);
Attributes = CursorBackup . Attributes;
CursorX = CursorBackup . CursorX;
CursorY = CursorBackup . CursorY;
SetCursor();
return(NULL);
}
UBYTE * __regargs
ScaleFont(UBYTE *Buffer)
{
WORD NewScale,Scale;
Scale = RasterAttr[CursorY];
ClearCursor();
NewScale = Scale;
switch(LastChar(Buffer))
{
case '3':
NewScale = SCALE_ATTR_TOP2X;
break;
case '4':
NewScale = SCALE_ATTR_BOT2X;
break;
case '5':
NewScale = SCALE_NORMAL;
break;
case '6':
NewScale = SCALE_ATTR_2X;
break;
}
if(Scale != NewScale)
{
UBYTE *RasterPtr = &Raster[CursorY * RasterWidth];
WORD RightMargin = LastColumn + 1,
CursorXSave = CursorX;
if(NewScale != SCALE_ATTR_NORMAL)
RightMargin /= 2;
RasterAttr[CursorY] = NewScale;
if(((Config . FontScale == SCALE_NORMAL) && (NewScale == SCALE_ATTR_NORMAL)) || ((Config . FontScale == SCALE_HALF) && (NewScale == SCALE_ATTR_2X)))
{
Move(RPort,0,CursorY * TextFontHeight + TextFontBase);
Text(RPort,RasterPtr,RightMargin);
}
else
{
CursorX = 0;
PrintScaled(RasterPtr,RightMargin,NewScale);
}
if(CursorXSave >= RightMargin)
CursorX = RightMargin - 1;
else
CursorX = CursorXSave;
}
SetCursor();
return(NULL);
}
UBYTE *
AlignmentTest()
{
STRPTR Buffer;
if(Buffer = AllocVec(LastColumn + 1,MEMF_ANY))
{
WORD i;
memset(Buffer,'E',LastColumn + 1);
EraseScreen("2");
ClearCursor();
if(Config . FontScale == SCALE_HALF)
{
for(i = 0 ; i <= LastLine ; i++)
{
CursorX = 0;
CursorY = i;
RasterAttr[i] = SCALE_ATTR_NORMAL;
RasterPutString(Buffer,LastColumn + 1);
ScrollLinePutString(LastColumn + 1);
Move(RPort,0,(i * TextFontHeight) + TextFontBase);
PrintScaled(Buffer,LastColumn + 1,SCALE_ATTR_NORMAL);
}
}
else
{
for(i = 0 ; i <= LastLine ; i++)
{
CursorX = 0;
CursorY = i;
RasterAttr[i] = SCALE_ATTR_NORMAL;
RasterPutString(Buffer,LastColumn + 1);
ScrollLinePutString(LastColumn + 1);
Move(RPort,0,(i * TextFontHeight) + TextFontBase);
Text(RPort,Buffer,LastColumn + 1);
}
}
CursorX = CursorY = 0;
SetCursor();
FreeVec(Buffer);
}
return(NULL);
}
/* SetTab():
*
* Set a tabulator stop at the current position.
*/
UBYTE *
SetTab()
{
if(CursorX < 1024)
TabStops[CursorX] = TRUE;
return(NULL);
}
/* RequestTerminal(UBYTE *Buffer):
*
* Return the current terminal position.
*/
UBYTE * __regargs
RequestTerminal(UBYTE *Buffer)
{
switch(Buffer[0])
{
/* Make ourselves known as a VT200
* terminal.
*/
case '[': if(Buffer[1] != '>')
return("\033[?62;1;2;6;7;8;9c");
else
return("\033[>1;10;0c");
/* This is an old status request type,
* we will return the standard `I am a
* VT101' sequence.
*/
case 'Z': return("\033[?1;0c");
default: return(NULL);
}
}
/* Reset():
*
* Reset terminal to initial state.
*/
UBYTE *
Reset()
{
WORD i;
ClearCursor();
memset(&TabStops[0],FALSE,1024);
for(i = 8 ; i < 1024 ; i += 8)
TabStops[i] = TRUE;
CharMode[0] = TABLE_ASCII;
CharMode[1] = TABLE_GFX;
Charset = 0;
SetAPen(RPort,0);
SetWrMsk(RPort,0xFF);
RectFill(RPort,0,0,Window -> Width - 1,Window -> Height - 1);
ScrollLineEraseScreen(2);
RasterEraseScreen(2);
switch(Config . ColourMode)
{
case COLOUR_EIGHT: FgPen = 7;
break;
case COLOUR_SIXTEEN: FgPen = 15;
break;
case COLOUR_AMIGA:
default: FgPen = 1;
break;
}
BgPen = 0;
if(RPort -> FgPen != FgPen)
SetAPen(RPort,FgPen);
if(RPort -> BgPen != BgPen)
SetBPen(RPort,BgPen);
if(StyleType != FS_NORMAL)
{
SetSoftStyle(RPort,FS_NORMAL,0xFF);
StyleType = FS_NORMAL;
}
CurrentFont = TextFont;
SetFont(RPort,CurrentFont);
if(Config . EightyColumns)
{
LastColumn = 79;
LastPixel = 80 * 8 - 1;
}
else
{
LastColumn = Window -> Width / TextFontWidth - 1;
LastPixel = (LastColumn + 1) * TextFontWidth - 1;
}
UseRegion = FALSE;
RegionSet = FALSE;
Config . AutoWrap = TRUE;
Config . NewLine = FALSE;
Config . InsertChar = FALSE;
Config . CursorApp = FALSE;
Config . NumApp = FALSE;
Config . FontScale = SCALE_NORMAL;
Config . JumpScroll = TRUE;
Attributes = 0;
Top = 0;
Bottom = LastLine;
CursorX = 0;
CursorY = 0;
CursorBackup . Charset = Charset;
CursorBackup . Attributes = Attributes;
CursorBackup . CursorX = CursorX;
CursorBackup . CursorY = CursorY;
CursorBackup . Style = StyleType;
CursorBackup . FgPen = FgPen;
CursorBackup . BgPen = BgPen;
CursorBackup . CurrentFont = CurrentFont;
SetCursor();
return(NULL);
}
/* PrinterController(UBYTE *Buffer):
*
* Controls various screen dump and capture functions.
*/
UBYTE * __regargs
PrinterController(UBYTE *Buffer)
{
if(Config . PrinterEnabled)
{
switch(Buffer[1])
{
case 'i':
case '0': if(RegionSet)
PrintRegion(Top,Bottom + 1);
else
PrintRegion(0,LastLine + 1);
break;
case '5': OpenPrinterCapture(TRUE);
break;
case '4': ClosePrinterCapture(FALSE);
break;
}
}
return(NULL);
}
/* RequestInformation(UBYTE *Buffer):
*
* Request miscellaneous information (state & cursor position).
*/
UBYTE * __regargs
RequestInformation(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
switch(Value)
{
/* Terminal status report, return code
* for `no malfunction'.
*/
case 5: return("\033[0n");
/* The origin is placed at 0/0 and the first
* cursor position is 1/1. We'll have to add
* 1 to our internal positions since our
* universe has been shifted one field to the
* left top corner.
*/
case 6: SPrintf(GlobalBuffer,"\033[%ld;%ldR",CursorY + 1,CursorX + 1);
return(GlobalBuffer);
/* A VT200 command: request printer status.
* We will return `the printer is ready'.
*/
case 15: if(Config . PrinterEnabled)
return("\033[?10n");
else
return("\033[?11n");
/* VT200 command: request user defined
* key status. We will return `user
* defined keys are locked'.
*/
case 25: return("\033[?21n");
/* Another VT200 command: request
* keyboard language. We will return
* `keyboard language unknown' - does
* anybody know when locale.library will
* be released?
*/
case 26: return("\033[?27;0n");
default: return(NULL);
}
}
/* SetSomething(UBYTE *Buffer):
*
* Set a terminal option.
*/
UBYTE * __regargs
SetSomething(UBYTE *Buffer)
{
switch(Buffer[1])
{
case '?':
switch(Buffer[2])
{
/* Set cursor keys applications mode. */
case '1': if(Buffer[3] == 'h')
Config . CursorApp = TRUE;
else
Config . CursorApp = FALSE;
return(NULL);
/* Set line length (132 or 80). */
case '3': ClearCursor();
if(Buffer[3] == 'h')
{
if(Config . FontScale != SCALE_HALF)
{
Config . FontScale = SCALE_HALF;
if(Config . EightyColumns)
{
LastColumn = 131;
LastPixel = 80 * 8 - 1;
}
else
{
LastColumn = Window -> Width / (TextFontWidth / 2) - 1;
LastPixel = (LastColumn + 1) * (TextFontWidth / 2) - 1;
}
}
}
else
{
if(Config . FontScale != SCALE_NORMAL)
{
Config . FontScale = SCALE_NORMAL;
if(Config . EightyColumns)
{
LastColumn = 79;
LastPixel = 80 * 8 - 1;
}
else
{
LastColumn = Window -> Width / TextFontWidth - 1;
LastPixel = (LastColumn + 1) * TextFontWidth - 1;
}
}
}
CursorX = CursorY = 0;
SetCursor();
EraseScreen("2");
return(NULL);
/* Set scroll mode (jump or smooth). */
case '4': if(Buffer[3] == 'h')
Config . JumpScroll = FALSE;
else
Config . JumpScroll = TRUE;
break;
/* Turn region on or off. */
case '6': if(Buffer[3] == 'h')
UseRegion = TRUE;
else
UseRegion = FALSE;
ResetCursor();
return(NULL);
/* Turn character wrapping on or off. */
case '7': if(Buffer[3] == 'h')
Config . AutoWrap = TRUE;
else
Config . AutoWrap = FALSE;
return(NULL);
/* Set interlaced mode. */
case '9': if(Buffer[3] == 'h')
{
if(!(Config . DisplayMode & LACE))
{
CopyMem(&Config,&PrivateConfig,sizeof(struct Configuration));
Config . DisplayMode |= LACE;
ResetDisplay = TRUE;
}
}
else
{
if(Config . DisplayMode & LACE)
{
CopyMem(&Config,&PrivateConfig,sizeof(struct Configuration));
Config . DisplayMode &= ~LACE;
ResetDisplay = TRUE;
}
}
return(NULL);
default: return(NULL);
}
break;
case '2':
/* Set newline mode. */
if(Buffer[2] == '0')
{
if(Buffer[3] == 'h')
Config . NewLine = TRUE;
else
Config . NewLine = FALSE;
}
break;
case '4':
/* Set insert mode. */
if(Buffer[2] == 'h')
Config . InsertChar = TRUE;
else
Config . InsertChar = FALSE;
break;
case '1':
/* Print region or screen. */
if(Buffer[2] == '9')
{
if(Buffer[3] == 'l')
{
if(RegionSet)
PrintRegion(Top,Bottom + 1);
else
PrintRegion(0,LastLine + 1);
}
if(Buffer[3] == 'h')
PrintRegion(0,LastLine + 1);
}
break;
}
return(NULL);
}
/* NumericAppMode(UBYTE *Buffer):
*
* Set the numeric pad applications mode.
*/
UBYTE * __regargs
NumericAppMode(UBYTE *Buffer)
{
if(*Buffer == '=')
Config . NumApp = TRUE;
else
{
if(*Buffer == '>')
Config . NumApp = FALSE;
}
return(NULL);
}
/* MoveCursor(UBYTE *Buffer):
*
* Move the cursor in some direction and stop at
* top/bottom/margin if necessary.
*/
UBYTE * __regargs
MoveCursor(UBYTE *Buffer)
{
WORD Value,Hit,LastCharPosition;
BYTE InRegion = TRUE;
ReadValue(Buffer,&Value);
if(Value < 1)
Value = 1;
ClearCursor();
switch(LastChar(Buffer))
{
/* Move cursor Up value lines */
case 'A':
ScrollUp: Hit = 0;
if(RegionSet)
{
if(CursorY >= Top)
Hit = Top;
else
InRegion = FALSE;
}
CursorY -= Value;
if(CursorY < Hit)
{
Value = CursorY - Hit;
CursorY = Hit;
if(Config . CursorWrap && InRegion)
ScrollRegion(Value);
}
break;
/* Move cursor Down value lines */
case 'B':
ScrollDown: Hit = LastLine;
if(RegionSet)
{
if(CursorY <= Bottom)
Hit = Bottom;
else
InRegion = FALSE;
}
CursorY += Value;
if(CursorY > Hit)
{
Value = CursorY - Hit;
CursorY = Hit;
if(Config . CursorWrap && InRegion)
ScrollRegion(Value);
}
break;
/* Move cursor Right value columns */
case 'C': CursorX += Value;
if(CursorX > LastColumn)
{
if(Config . CursorWrap)
{
Value = CursorX / (LastColumn + 1);
CursorX -= Value * (LastColumn + 1);
goto ScrollDown;
}
else
CursorX = LastColumn;
}
break;
/* Move cursor Left value columns */
case 'D': CursorX -= Value;
if(CursorX < 0)
{
if(Config . CursorWrap)
{
Value = CursorX / (LastColumn + 1);
CursorX -= Value * (LastColumn + 1);
Value = -Value;
goto ScrollDown;
}
else
CursorX = 0;
}
break;
default: break;
}
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
LastCharPosition = LastColumn;
else
LastCharPosition = ((LastColumn + 1) / 2) - 1;
if(CursorX > LastCharPosition)
CursorX = LastCharPosition;
SetCursor();
return(NULL);
}
/* EraseLine(UBYTE *Buffer):
*
* Erase a line on the display.
*/
UBYTE * __regargs
EraseLine(UBYTE *Buffer)
{
WORD Value,Width = GetFontWidth();
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
ClearCursor();
switch(Value)
{
case 1: ScrollLineRectFill(RPort,0,CursorY * TextFontHeight,((CursorX + 1) * Width) - 1,(CursorY + 1) * TextFontHeight - 1);
break;
case 2: ScrollLineRectFill(RPort,0,CursorY * TextFontHeight,LastPixel,(CursorY + 1) * TextFontHeight - 1);
break;
default:ScrollLineRectFill(RPort,CursorX * Width,CursorY * TextFontHeight,LastPixel,(CursorY + 1) * TextFontHeight - 1);
break;
}
ScrollLineEraseLine(Value);
DrawCursor();
RasterEraseLine(Value);
BackupRender();
return(NULL);
}
/* EraseScreen(UBYTE *Buffer):
*
* Erase parts of the screen.
*/
UBYTE * __regargs
EraseScreen(UBYTE *Buffer)
{
WORD Value,Width = GetFontWidth();
ClearCursor();
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
switch(Value)
{
case 1: if(CursorY)
ScrollLineRectFill(RPort,0,0,LastPixel,(CursorY * TextFontHeight) - 1);
ScrollLineRectFill(RPort,0,CursorY * TextFontHeight,((CursorX + 1) * Width) - 1,(CursorY + 1) * TextFontHeight - 1);
break;
case 2: ScrollLineRectFill(RPort,0,0,LastPixel,(LastLine + 1) * TextFontHeight - 1);
break;
default:ScrollLineRectFill(RPort,CursorX * Width,CursorY * TextFontHeight,LastPixel,(CursorY + 1) * TextFontHeight - 1);
if(CursorY != LastLine)
ScrollLineRectFill(RPort,0,(CursorY + 1) * TextFontHeight,LastPixel,(LastLine + 1) * TextFontHeight - 1);
break;
}
ScrollLineEraseScreen(Value);
RasterEraseScreen(Value);
DrawCursor();
BackupRender();
return(NULL);
}
/* EraseCharacters(UBYTE *Buffer):
*
* Erase a number of characters.
*/
UBYTE * __regargs
EraseCharacters(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetBPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
WORD Width = GetFontWidth();
RasterEraseCharacters(Value);
ScrollLineEraseCharacters(Value);
ClearCursor();
ScrollLineRaster(RPort,Value * Width,0,CursorX * Width,CursorY * TextFontHeight,LastPixel,(CursorY + 1) * TextFontHeight - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* InsertCharacters(UBYTE *Buffer):
*
* Insert a number of characters.
*/
UBYTE * __regargs
InsertCharacters(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetBPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
WORD Width = GetFontWidth();
RasterShiftChar(Value);
ScrollLineShiftChar(Value);
ClearCursor();
ScrollLineRaster(RPort,-Value * Width,0,CursorX * Width,CursorY * TextFontHeight,LastPixel,(CursorY + 1) * TextFontHeight - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* InsertLine(UBYTE *Buffer):
*
* Insert a number of lines and scroll the rest of the
* display down.
*/
UBYTE * __regargs
InsertLine(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
WORD RegionBottom,RegionTop,TheTop = CursorY;
if(RegionSet)
{
RegionTop = Top;
RegionBottom = Bottom + 1;
}
else
{
RegionTop = 0;
RegionBottom = LastLine + 1;
}
if(TheTop < RegionTop)
TheTop = RegionTop;
RasterInsertLine(Value,TheTop);
ClearCursor();
ScrollLineRaster(RPort,0,-(Value * TextFontHeight),0,TheTop * TextFontHeight,LastPixel,RegionBottom * TextFontHeight - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* ClearLine(UBYTE *Buffer):
*
* Clear a number of lines and scroll up the ones below it.
*/
UBYTE * __regargs
ClearLine(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
WORD RegionBottom,RegionTop,TheTop = CursorY;
if(RegionSet)
{
RegionTop = Top;
RegionBottom = Bottom + 1;
}
else
{
RegionTop = 0;
RegionBottom = LastLine + 1;
}
if(TheTop < RegionTop)
TheTop = RegionTop;
RasterClearLine(Value,TheTop);
ClearCursor();
ScrollLineRaster(RPort,0,Value * TextFontHeight,0,TheTop * TextFontHeight,LastPixel,RegionBottom * TextFontHeight - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* SetTabs(UBYTE *Buffer):
*
* Set the current tab stops.
*/
UBYTE * __regargs
SetTabs(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
if(Value == -1)
Value = 0;
switch(Value)
{
case 0: if(CursorX < 1024)
TabStops[CursorX] = FALSE;
break;
case 3: memset(&TabStops[0],FALSE,1024);
break;
default:break;
}
return(NULL);
}
/* SetAbsolutePosition(UBYTE *Buffer):
*
* Move the cursor to a given location on the display,
* this routine ignores the current scroll region
* settings.
*/
UBYTE * __regargs
SetAbsolutePosition(UBYTE *Buffer)
{
WORD Value;
Buffer = ReadValue(Buffer,&Value);
ClearCursor();
if(UseRegion && RegionSet)
CursorY = Top;
else
CursorY = 0;
CursorX = 0;
if(Value != -1)
{
/* Our raster origin is 0/0 instead of 1/1. */
if(Value)
Value--;
if(UseRegion && RegionSet)
CursorY = Top + Value;
else
CursorY = Value;
if(Buffer)
{
ReadValue(Buffer,&Value);
if(Value > 0)
CursorX = Value - 1;
else
CursorX = 0;
}
/* Truncate illegal positions. */
if(CursorX > LastColumn)
CursorX = LastColumn;
if(CursorY > LastLine)
CursorY = LastLine;
}
SetCursor();
return(NULL);
}
/* SetAttributes(UBYTE *Buffer):
*
* Set the current display rendering attributes.
*/
UBYTE * __regargs
SetAttributes(UBYTE *Buffer)
{
LONG TextFlags = FS_NORMAL;
WORD Value;
ClearCursor();
do
{
Buffer = ReadValue(Buffer,&Value);
if(Value == -1)
Value = 0;
switch(Value)
{
case 0: switch(Config . ColourMode)
{
case COLOUR_AMIGA:
case COLOUR_MONO: FgPen = 1;
break;
case COLOUR_EIGHT: FgPen = 7;
break;
case COLOUR_SIXTEEN: FgPen = 15;
break;
}
BgPen = 0;
if(RPort -> FgPen != FgPen)
SetAPen(RPort,FgPen);
if(RPort -> BgPen != BgPen)
SetBPen(RPort,BgPen);
Attributes = 0;
break;
case 1: Attributes |= ATTR_HIGHLIGHT;
break;
case 4: Attributes |= ATTR_UNDERLINE;
break;
case 5: Attributes |= ATTR_BLINK;
break;
case 7: if(!(Attributes & ATTR_INVERSE))
{
BYTE Help;
Help = FgPen;
FgPen = BgPen;
BgPen = Help;
}
Attributes |= ATTR_INVERSE;
break;
default:if(Value >= 30)
{
if(Value <= 37)
{
if(Attributes & ATTR_INVERSE)
BgPen = Value - 30;
else
FgPen = Value - 30;
}
else
{
if(Value >= 40 && Value <= 47)
{
if(Attributes & ATTR_INVERSE)
FgPen = Value - 40;
else
BgPen = Value - 40;
}
}
}
break;
}
}
while(Buffer);
if(Attributes & ATTR_UNDERLINE)
TextFlags |= FSF_UNDERLINED;
if(Attributes & ATTR_HIGHLIGHT)
{
if(Config . ColourMode == COLOUR_SIXTEEN)
{
if(Attributes & ATTR_INVERSE)
BgPen |= 8;
else
FgPen |= 8;
}
else
TextFlags |= FSF_BOLD;
}
if(Attributes & ATTR_BLINK)
{
if(Config . Emulation == EMULATION_ANSIVT100)
{
switch(Config . ColourMode)
{
case COLOUR_AMIGA: if(Attributes & ATTR_INVERSE)
BgPen = 3;
else
FgPen = 3;
break;
case COLOUR_EIGHT: if(Attributes & ATTR_INVERSE)
BgPen |= 8;
else
FgPen |= 8;
break;
case COLOUR_SIXTEEN: break;
case COLOUR_MONO: if(Attributes & ATTR_INVERSE)
BgPen = 1;
else
FgPen = 1;
break;
}
}
}
if(TextFlags != StyleType)
{
SetSoftStyle(RPort,TextFlags,0xFF);
StyleType = TextFlags;
}
if(Config . ColourMode == COLOUR_MONO)
{
if((FgPen & 1) == (BgPen & 1))
{
if(ColourValue(FgPen) < ColourValue(BgPen))
{
if(Attributes & ATTR_INVERSE)
{
FgPen = 1;
BgPen = 0;
}
else
{
FgPen = 0;
BgPen = 1;
}
}
else
{
if(Attributes & ATTR_INVERSE)
{
FgPen = 0;
BgPen = 1;
}
else
{
FgPen = 1;
BgPen = 0;
}
}
}
}
if(FgPen != RPort -> FgPen)
SetAPen(RPort,FgPen);
if(BgPen != RPort -> BgPen)
SetBPen(RPort,BgPen);
SetCursor();
return(NULL);
}
/* SetRegion(UBYTE *Buffer):
*
* Set the current scroll region top and bottom.
*/
UBYTE * __regargs
SetRegion(UBYTE *Buffer)
{
WORD NewTop,Value,NewBottom = LastLine;
Buffer = ReadValue(Buffer,&Value);
if(Value > 0)
{
NewTop = Value;
if(Value > 0)
NewTop = Value - 1;
if(Buffer)
{
ReadValue(Buffer,&Value);
if(Value > 0)
NewBottom = Value - 1;
}
if(NewBottom > LastLine)
NewBottom = LastLine;
if(NewTop > LastLine)
NewTop = LastLine;
}
else
{
NewTop = 0;
NewBottom = LastLine;
}
if(NewTop < NewBottom)
{
if(NewTop != 0 || NewBottom != LastLine)
{
Top = NewTop;
Bottom = NewBottom;
RegionSet = TRUE;
}
else
UseRegion = RegionSet = FALSE;
ResetCursor();
}
else
RegionSet = FALSE;
return(NULL);
}
/* ResetCursor():
*
* Reset cursor to top of screen.
*/
VOID
ResetCursor()
{
ClearCursor();
CursorX = 0;
if(UseRegion && RegionSet)
CursorY = Top;
else
CursorY = 0;
SetCursor();
}