home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The Fred Fish Collection 1.5
/
ffcollection-1-5-1992-11.iso
/
ff_disks
/
500-599
/
ff589.lza
/
Term
/
TermSrc.lha
/
ParseRoutines.c
< prev
next >
Wrap
C/C++ Source or Header
|
1991-12-08
|
27KB
|
1,785 lines
/* $Revision Header * Header built automatically - do not edit! *************
*
* (C) Copyright 1990 by Olaf 'Olsen' Barthel & MXM
*
* Name .....: ParseRoutines.c
* Created ..: Monday 21-Jan-91 20:12
* Revision .: 0
*
* Date Author Comment
* ========= ======== ====================
* 21-Jan-91 Olsen Created this file!
*
* $Revision Header ********************************************************/
#include "TermGlobal.h"
/* Flag indicating whether the cursor has already been
* erased or not.
*/
STATIC BYTE CursorEnabled = FALSE;
/* Global string buffer and backup style. */
STATIC UBYTE GlobalBuffer[20],StyleType = FS_NORMAL;
/* 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;
}
}
VOID
ClipBlitCursor(UBYTE DoClip,UBYTE DoMove)
{
ULONG DestX,DestY,XSize;
ULONG X,Y,lc;
if(DoClip || DoMove)
{
if(CursorY > LastLine)
Y = LastLine;
else
{
if(CursorY < 0)
Y = 0;
else
Y = CursorY;
}
if(Config . RasterEnabled)
{
lc = (RasterAttr[Y] == SCALE_ATTR_NORMAL) ? LastColumn : LastColumn >> 1;
if(CursorX > lc)
X = lc;
else
{
if(CursorX < 0)
X = 0;
else
X = CursorX;
}
if(Config . FontScale == SCALE_NORMAL)
{
if(RasterAttr[Y] == SCALE_ATTR_NORMAL)
{
DestX = X << 3;
XSize = 8;
}
else
{
DestX = X << 4;
XSize = 16;
if(X > (LastColumn >> 1))
X = LastColumn >> 1;
}
}
else
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
DestX = X << 2;
XSize = 4;
}
else
{
DestX = X << 3;
XSize = 8;
if(X > (LastColumn >> 1))
X = LastColumn >> 1;
}
}
}
else
{
lc = (Config . FontScale == SCALE_NORMAL) ? LastColumn : LastColumn >> 1;
if(CursorX > lc)
X = lc;
else
{
if(CursorX < 0)
X = 0;
else
X = CursorX;
}
if(Config . FontScale == SCALE_NORMAL)
{
DestX = X << 3;
XSize = 8;
}
else
{
DestX = X << 2;
XSize = 4;
if(X > (LastColumn >> 1))
X = LastColumn >> 1;
}
}
DestY = Y << 3;
if(DoMove)
Move(RPort,DestX,DestY + 6);
if(DoClip)
ClipBlit(RPort,0,0,RPort,DestX,DestY,XSize,8,0x50);
}
}
/* ColourValue(UWORD Colour):
*
* Calculate the value of a given colour (brightness).
*/
STATIC WORD
ColourValue(UWORD Colour)
{
BYTE Red,Green,Blue;
WORD Sum;
Red = (Colour >> 8) & 0xF;
Green = (Colour >> 4) & 0xF;
Blue = (Colour ) & 0xF;
Sum = (Red + Green + Blue) / 3;
return(Sum);
}
/* 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
ShiftChar(LONG Size)
{
LONG Dx,xMin,yMin,xMax,yMax;
xMax = Window -> Width - 1;
yMin = CursorY << 3;
yMax = yMin + 7;
if(Config . RasterEnabled)
{
if(Config . FontScale == SCALE_NORMAL)
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
Dx = Size << 3;
xMin = CursorX << 3;
}
else
{
Dx = Size << 4;
xMin = CursorX << 4;
}
}
else
{
if(RasterAttr[CursorY] == SCALE_ATTR_NORMAL)
{
Dx = Size << 2;
xMin = CursorX << 2;
}
else
{
Dx = Size << 3;
xMin = CursorX << 3;
}
}
}
else
{
Dx = Size << 3;
xMin = CursorX << 3;
}
BackupRender();
SetBPen(RPort,0);
ScrollRaster(RPort,-Dx,0,xMin,yMin,xMax,yMax);
BackupRender();
}
/* ScrollRegion(WORD Direction):
*
* Scroll the current scroll region up or down.
*/
VOID
ScrollRegion(WORD Direction)
{
WORD RegionTop, RegionBottom, RegionLines;
LONG Dir,Dy,yMin,xMax,yMax;
Dir = Direction < 0 ? -Direction : Direction;
if(RegionSet)
{
yMin = Top * 8;
yMax = (Bottom + 1) * 8 - 1;
RegionTop = Top;
RegionBottom = Bottom;
RegionLines = Bottom - Top;
}
else
{
yMin = 0;
yMax = (LastLine + 1) * 8 - 1;
RegionTop = 0;
RegionBottom = LastLine + 1;
RegionLines = LastLine + 1;
}
xMax = Window -> Width - 1;
BackupRender();
SetBPen(RPort,0);
if(Config . RasterEnabled)
RasterScrollRegion(Direction,RegionTop,RegionBottom,RegionLines);
if(Dir > RegionLines)
{
/* All that is needed is to delete the lines
* note: not too brilliant for smooth scroll
*/
RectFill(RPort,0,yMin,xMax,yMax);
}
else
{
if(Config . JumpScroll)
{
Dy = Direction * 8;
ScrollRaster(RPort,0,Dy,0,yMin,xMax,yMax);
}
else
{
WORD i, j= Dir * 4;
if(Direction < 0)
Dy = -2;
else
Dy = 2;
for(i = 0 ; i < j ; i++)
{
WaitTOF();
ScrollRaster(RPort,0,Dy,0,yMin,xMax,yMax);
}
}
}
BackupRender();
}
/* LastChar(UBYTE *Buffer):
*
* Return the last character in a string.
*/
STATIC UBYTE
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 *
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);
}
/* Ignore():
*
* Do nothing, return immediately.
*/
UBYTE *
Ignore()
{
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()
{
WORD Hit = 0;
UBYTE InRegion = TRUE;
ClearCursor();
if(RegionSet)
{
if(CursorY >= Top)
Hit = Top;
else
InRegion = FALSE;
}
if(CursorY == Hit)
{
if(InRegion)
ScrollRegion(-1);
}
else
{
CursorY--;
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 . UseRegion = UseRegion;
CursorBackup . RegionSet = RegionSet;
CursorBackup . Top = Top;
CursorBackup . Bottom = Bottom;
CursorBackup . CursorX = CursorX;
CursorBackup . CursorY = CursorY;
return(NULL);
}
/* FontStuff(UBYTE *Buffer):
*
* Set the drawing font (standard characters/line).
*/
UBYTE *
FontStuff(UBYTE *Buffer)
{
switch(LastChar(Buffer))
{
case 'A':
case 'B': if(Config . Font == FONT_IBM && IBM)
CurrentFont = IBM;
else
CurrentFont = Topaz;
SetFont(RPort,CurrentFont);
break;
default: break;
}
return(NULL);
}
/* LoadCursor():
*
* Load cursor position and rendering attributes.
*/
UBYTE *
LoadCursor()
{
LONG TextFlags = FS_NORMAL;
ClearCursor();
if(CursorBackup . Attributes & ATTR_UNDERLINE)
TextFlags |= FSF_UNDERLINED;
if((CursorBackup . Attributes & ATTR_HIGHLIGHT) && Config . ColourMode != COLOUR_SIXTEEN)
TextFlags |= FSF_BOLD;
if(CursorBackup . Attributes & ATTR_BLINK)
{
if(Config . Emulation == EMULATION_ANSIVT100)
{
switch(Config . ColourMode)
{
case COLOUR_AMIGA: if(CursorBackup . Attributes & ATTR_INVERSE)
BgPen = 3;
else
FgPen = 3;
break;
case COLOUR_EIGHT: if(CursorBackup . Attributes & ATTR_INVERSE)
BgPen |= 8;
else
FgPen |= 8;
break;
case COLOUR_SIXTEEN: break;
}
}
}
if(StyleType != TextFlags)
{
SetSoftStyle(RPort,TextFlags,0xFF);
StyleType = TextFlags;
}
if(RPort -> FgPen != FgPen)
SetAPen(RPort,FgPen);
if(RPort -> BgPen != BgPen)
SetBPen(RPort,BgPen);
Attributes = CursorBackup . Attributes;
UseRegion = CursorBackup . UseRegion;
RegionSet = CursorBackup . RegionSet;
Top = CursorBackup . Top;
Bottom = CursorBackup . Bottom;
CursorX = CursorBackup . CursorX;
CursorY = CursorBackup . CursorY;
SetCursor();
return(NULL);
}
UBYTE *
ScaleFont(UBYTE *Buffer)
{
WORD NewScale,Scale;
WORD CursorXSave;
UBYTE *RasterPtr;
Scale = RasterAttr[CursorY];
ClearCursor();
if(Config . RasterEnabled)
NewScale = Scale;
else
NewScale = Config . FontScale;
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)
{
UWORD i;
CursorXSave = CursorX;
i = LastColumn + 1;
if(NewScale != SCALE_ATTR_NORMAL)
i >>= 1;
if(Config . RasterEnabled)
{
RasterAttr[CursorY] = NewScale;
RasterPtr = &Raster[CursorY * RasterWidth];
if(((Config . FontScale == SCALE_NORMAL) && (NewScale == SCALE_ATTR_NORMAL)) || ((Config . FontScale == SCALE_HALF) && (NewScale == SCALE_ATTR_2X)))
{
Move(RPort,0,(CursorY << 3) + 6);
Text(RPort,RasterPtr,i);
}
else
{
CursorX = 0;
PrintScaled(RasterPtr,i,NewScale);
}
}
if(CursorXSave >= i)
CursorX = i - 1;
else
CursorX = CursorXSave;
}
SetCursor();
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 *
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;
SetRast(RPort,0);
if(Config . RasterEnabled)
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;
}
if(Config . Font == FONT_IBM && IBM)
CurrentFont = IBM;
else
CurrentFont = Topaz;
SetFont(RPort,CurrentFont);
if(Config . EightyColumns)
LastColumn = 79;
else
LastColumn = (Window -> Width >> 3) - 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 . UseRegion = UseRegion;
CursorBackup . RegionSet = RegionSet;
CursorBackup . Top = Top;
CursorBackup . Bottom = Bottom;
CursorBackup . CursorX = CursorX;
CursorBackup . CursorY = CursorY;
SetCursor();
return(NULL);
}
/* RequestInformation(UBYTE *Buffer):
*
* Request miscellaneous information (state & cursor position).
*/
UBYTE *
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 `no printer connected'.
*/
case 15: return("\033[?13n");
/* 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 *
SetSomething(UBYTE *Buffer)
{
if(Buffer[1] == '?')
{
switch(Buffer[2])
{
case '1': if(Buffer[3] == 'h')
Config . CursorApp = TRUE;
else
Config . CursorApp = FALSE;
return(NULL);
case '3': if(Buffer[3] == 'h')
{
if(Config . FontScale != SCALE_HALF)
{
Config . FontScale = SCALE_HALF;
if(Config . EightyColumns)
LastColumn = 131;
else
LastColumn = (Window -> Width >> 2) - 1;
}
}
else
{
if(Config . FontScale != SCALE_NORMAL)
{
Config . FontScale = SCALE_NORMAL;
if(Config . EightyColumns)
LastColumn = 79;
else
LastColumn = (Window -> Width >> 3) - 1;
}
}
EraseScreen("2");
ClearCursor();
CursorX = 0;
CursorY = 0;
SetCursor();
return(NULL);
case '4': if(Buffer[3] == 'h')
Config . JumpScroll = FALSE;
else
Config . JumpScroll = TRUE;
break;
case '6': if(Buffer[3] == 'h')
UseRegion = TRUE;
else
UseRegion = FALSE;
ResetCursor();
return(NULL);
case '7': if(Buffer[3] == 'h')
Config . AutoWrap = TRUE;
else
Config . AutoWrap = FALSE;
return(NULL);
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);
}
}
else
{
if(Buffer[1] == '2' && Buffer[2] == '0')
{
if(Buffer[3] == 'h')
Config . NewLine = TRUE;
else
Config . NewLine = FALSE;
}
else
{
if(Buffer[1] == '4')
{
if(Buffer[2] == 'h')
Config . InsertChar = TRUE;
else
Config . InsertChar = FALSE;
}
}
}
return(NULL);
}
/* NumericAppMode(UBYTE *Buffer):
*
* Set the numeric pad applications mode.
*/
UBYTE *
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 *
MoveCursor(UBYTE *Buffer)
{
WORD Value;
WORD Hit,lc;
UBYTE 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;
CursorX -= Value * LastColumn;
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;
Value = -Value;
goto ScrollDown;
}
else
CursorX = 0;
}
break;
default: break;
}
if(Config . RasterEnabled)
lc = (RasterAttr[CursorY] == SCALE_ATTR_NORMAL) ? LastColumn : LastColumn >> 1;
else
lc = (Config . FontScale == SCALE_NORMAL) ? LastColumn : LastColumn >> 1;
if(CursorX > lc)
CursorX = lc;
SetCursor();
return(NULL);
}
/* EraseLine(UBYTE *Buffer):
*
* Erase a line on the display.
*/
UBYTE *
EraseLine(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
if(Config . RasterEnabled)
RasterEraseLine(Value);
ClearCursor();
switch(Value)
{
case 1: RectFill(RPort,0,CursorY * 8,(CursorX + 1) * 8 - 1,(CursorY + 1) * 8 - 1);
break;
case 2: RectFill(RPort,0,CursorY * 8,Window -> Width - 1,(CursorY + 1) * 8 - 1);
break;
default:RectFill(RPort,CursorX * 8,CursorY * 8,Window -> Width - 1,(CursorY + 1) * 8 - 1);
break;
}
DrawCursor();
BackupRender();
return(NULL);
}
/* EraseScreen(UBYTE *Buffer):
*
* Erase parts of the screen.
*/
UBYTE *
EraseScreen(UBYTE *Buffer)
{
WORD Value;
ClearCursor();
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
if(Config . RasterEnabled)
RasterEraseScreen(Value);
switch(Value)
{
case 1: RectFill(RPort,0,0,Window -> Width - 1,(CursorY + 1) * 8 - 1);
break;
case 2: RectFill(RPort,0,0,Window -> Width - 1,(LastLine + 1) * 8 - 1);
break;
default:RectFill(RPort,0,CursorY * 8,Window -> Width - 1,(LastLine + 1) * 8 - 1);
break;
}
DrawCursor();
BackupRender();
return(NULL);
}
/* EraseCharacters(UBYTE *Buffer):
*
* Erase a number of characters.
*/
UBYTE *
EraseCharacters(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetBPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
if(Config . RasterEnabled)
RasterEraseCharacters(Value);
ClearCursor();
ScrollRaster(RPort,8 * Value,0,CursorX * 8,CursorY * 8,Window -> Width - 1,(LastLine + 1) * 8 - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* InsertLine(UBYTE *Buffer):
*
* Insert a number of lines and scroll the rest of the
* display down.
*/
UBYTE *
InsertLine(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
if(Config . RasterEnabled)
RasterInsertLine(Value);
ClearCursor();
ScrollRaster(RPort,0,-8 * Value,0,CursorY * 8,Window -> Width - 1,(LastLine + 1) * 8 - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* ClearLine(UBYTE *Buffer):
*
* Clear a number of lines and scroll up the ones below it.
*/
UBYTE *
ClearLine(UBYTE *Buffer)
{
WORD Value;
ReadValue(Buffer,&Value);
BackupRender();
SetAPen(RPort,0);
if(Value == -1)
Value = 1;
if(Value > 0)
{
if(Config . RasterEnabled)
RasterClearLine(Value);
ClearCursor();
ScrollRaster(RPort,0,Value * 8,0,CursorY * 8,Window -> Width - 1,(LastLine + 1) * 8 - 1);
DrawCursor();
}
BackupRender();
return(NULL);
}
/* SetTabs(UBYTE *Buffer):
*
* Set the current tab stops.
*/
UBYTE *
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);
}
/* SetPosition(UBYTE *Buffer):
*
* Move the cursor to a given location on the display.
*/
UBYTE *
SetPosition(UBYTE *Buffer)
{
WORD Value;
Buffer = ReadValue(Buffer,&Value);
ClearCursor();
CursorX = 0;
CursorY = 0;
if(Value == -1)
{
if(UseRegion)
CursorY = Top;
}
else
{
/* Our raster origin is 0/0 instead of 1/1. */
if(Value)
Value--;
if(UseRegion)
CursorY = Top + Value;
else
CursorY = Value;
if(Buffer)
{
ReadValue(Buffer,&Value);
if(Value > 0)
CursorX = Value - 1;
}
/* Truncate illegal positions (this took almost
* two months to fix!).
*/
if(CursorX > LastColumn)
CursorX = LastColumn;
if(RegionSet)
{
if(CursorY > Bottom)
CursorY = Bottom;
}
else
{
if(CursorY > LastLine)
CursorY = LastLine;
}
}
SetCursor();
return(NULL);
}
/* SetAttributes(UBYTE *Buffer):
*
* Set the current display rendering attributes.
*/
UBYTE *
SetAttributes(UBYTE *Buffer)
{
LONG TextFlags = FS_NORMAL;
WORD Value;
do
{
Buffer = ReadValue(Buffer,&Value);
if(Value == -1)
Value = 0;
switch(Value)
{
case 0:
if((Attributes & ATTR_HIGHLIGHT) && Config . ColourMode == COLOUR_SIXTEEN)
{
if(Attributes & ATTR_INVERSE)
BgPen &= ~8;
else
FgPen &= ~8;
}
if(Attributes & ATTR_BLINK)
{
switch(Config . ColourMode)
{
case COLOUR_AMIGA:
case COLOUR_MONO: if(Attributes & ATTR_INVERSE)
BgPen = 1;
else
FgPen = 1;
break;
case COLOUR_EIGHT: if(Attributes & ATTR_INVERSE)
BgPen &= ~8;
else
FgPen &= ~8;
break;
default: break;
}
}
if(Attributes & ATTR_INVERSE)
{
BYTE Help;
Help = FgPen;
FgPen = BgPen;
BgPen = Help;
}
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(ColourValue(FgPen) < ColourValue(BgPen))
{
FgPen = 0;
BgPen = 1;
}
else
{
FgPen = 1;
BgPen = 0;
}
}
if(FgPen != RPort -> FgPen)
SetAPen(RPort,FgPen);
if(BgPen != RPort -> BgPen)
SetBPen(RPort,BgPen);
return(NULL);
}
/* SetRegion(UBYTE *Buffer):
*
* Set the current scroll region top and bottom.
*/
UBYTE *
SetRegion(UBYTE *Buffer)
{
WORD Value;
WORD NewTop = 0;
WORD NewBottom = LastLine;
Buffer = ReadValue(Buffer,&Value);
if(Value != -1)
{
NewTop = Value;
if(Value)
NewTop--;
if(Buffer)
{
ReadValue(Buffer,&Value);
if(Value > 0)
NewBottom = Value - 1;
}
}
if(NewTop < NewBottom)
{
RegionSet = TRUE;
if(NewTop == 0 && (NewBottom == LastLine || NewBottom == 24))
RegionSet = FALSE;
Top = NewTop;
Bottom = NewBottom;
ResetCursor();
}
return(NULL);
}
/*
* Reset cursor to top of screen
*/
VOID
ResetCursor()
{
ClearCursor();
CursorX = 0;
if(UseRegion && RegionSet)
CursorY = Top;
else
CursorY = 0;
SetCursor();
}