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newrpl/firmware/ui_cmdline.c

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/*
* Copyright (c) 2014-2015, Claudio Lapilli and the newRPL Team
* All rights reserved.
* This file is released under the 3-clause BSD license.
* See the file LICENSE.txt that shipped with this distribution.
*/
#include <newrpl.h>
#include <ui.h>
#include <libraries.h>
// COMMAND LINE API
// BASIC PRINCIPLES OF THE COMMAND LINE:
// * ONLY ONE LINE IS EDITED AT ONCE
// * LINE IS EDITED AS THE LAST OBJECT IN TEMPOB, TO BE STRETCHED AT WILL
// * IF LINE IS NOT AT THE END OF TEMPOB, A NEW COPY IS MADE
// RETURN LINE NUMBER FOR A GIVEN OFFSET, AND THE OFFSET OF THE START OF LINE
BINT uiGetLinebyOffset(BINT offset,BINT *linestart)
{
BYTEPTR ptr=(BYTEPTR)(CmdLineText+1);
BINT len=rplStrSize(CmdLineText);
BINT f,found,count;
if(offset>len) offset=len;
if(offset<0) offset=0;
found=0;
for(f=0,count=0; (f<len) && (f<offset);++f,++ptr)
{
if(*ptr=='\n') {
found=f+1;
++count;
}
}
if(linestart) *linestart=found;
return count+1;
}
BYTEPTR uiGetStartOfLine(BYTEPTR ptr,BYTEPTR startofstring)
{
while(ptr>startofstring) {
--ptr;
if(*ptr=='\n') return ptr+1;
}
return ptr;
}
BYTEPTR uiGetEndOfLine(BYTEPTR ptr,BYTEPTR endofstring)
{
while(ptr<endofstring) {
if(*ptr=='\n') return ptr;
++ptr;
}
return ptr;
}
void uiSetCmdLineState(BINT state)
{
halScreen.CmdLineState=state;
}
BINT uiGetCmdLineState()
{
return halScreen.CmdLineState;
}
// SET THE COMMAND LINE TO A GIVEN STRING OBJECT
void uiSetCmdLineText(WORDPTR text)
{
CmdLineText=text;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
halScreen.LineIsModified=-1;
// SET CURSOR AT END OF TEXT
BINT end=rplStrSize(CmdLineText);
BINT linestoff;
BYTEPTR linestart;
halScreen.LineCurrent=uiGetLinebyOffset(end,&linestoff);
linestart=((BYTEPTR)(CmdLineText+1))+linestoff;
halScreen.CursorPosition=((BYTEPTR)(CmdLineText+1))+end-linestart;
if(halScreen.CursorPosition<0) halScreen.CursorPosition=0;
halScreen.CursorX=StringWidthN((char *)linestart,(char *)linestart+halScreen.CursorPosition,(UNIFONT *)halScreen.CmdLineFont);
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
uiEnsureCursorVisible();
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
WORDPTR uiGetCmdLineText()
{
if(halScreen.LineIsModified>0) uiModifyLine(0);
if(Exceptions) return NULL;
return CmdLineText;
}
// SCROLL UP/DOWN AND LEFT/RIGHT TO KEEP CURSOR ON SCREEN
void uiEnsureCursorVisible()
{
int scrolled=0;
// CHECK IF SCROLL UP IS NEEDED
if(halScreen.LineCurrent<halScreen.LineVisible) {
halScreen.LineVisible=halScreen.LineCurrent;
scrolled=1;
}
// SCROLL DOWN AS NEEDED
if(halScreen.LineCurrent>=halScreen.LineVisible+halScreen.NumLinesVisible) {
halScreen.LineVisible=halScreen.LineCurrent-(halScreen.NumLinesVisible-1);
scrolled=1;
}
// SCROLL LEFT AS NEEDED
if(halScreen.CursorX<halScreen.XVisible+8) {
if(halScreen.XVisible>0) {
if(halScreen.XVisible<8) halScreen.XVisible=0;
else {
halScreen.XVisible=(halScreen.CursorX>8)? halScreen.CursorX-8:0;
scrolled=1;
}
}
}
// SCROLL RIGHT AS NEEDED
if(halScreen.CursorX>(halScreen.XVisible+SCREEN_WIDTH-8)) {
halScreen.XVisible=halScreen.CursorX-(SCREEN_WIDTH-8);
scrolled=1;
}
if(scrolled) halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
void __uicursorupdate()
{
if(halScreen.CursorState&0x4000) return; // DON'T UPDATE IF LOCKED
halScreen.CursorState^=0x8000; // FLIP STATE BIT
halScreen.DirtyFlag|=CMDLINE_CURSORDIRTY;
DRAWSURFACE scr;
ggl_initscr(&scr);
halRedrawCmdLine(&scr);
}
// OPEN AN EMPTY COMMAND LINE
// MODE CAN BE: 'A','P' OR 'D'
// OR IN ALPHA: 'L','C' OR 'X', WHERE 'X'= L OR C, WHATEVER WAS USED LAST
// ANY OTHER VALUE WILL DEFAULT TO MODE 'D'
void uiOpenCmdLine(BINT mode)
{
BINT AlphaMode;
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
halScreen.LineCurrent=1;
halScreen.LineIsModified=-1;
halScreen.LineVisible=1;
halScreen.NumLinesVisible=1;
halScreen.CursorX=0;
halScreen.CursorPosition=0;
halScreen.CmdLineState=CMDSTATE_OPEN;
halScreen.SelEndLine=halScreen.SelStartLine=-1;
halScreen.SelStart=halScreen.SelEnd=0;
if(((halScreen.CursorState&0xff)=='L')||((halScreen.CursorState&0xff)=='C')) AlphaMode=halScreen.CursorState&0xff;
else if(((halScreen.CursorState>>24)=='L')||((halScreen.CursorState>>24)=='C')) AlphaMode=halScreen.CursorState>>24;
else AlphaMode='L';
if((mode=='A')||(mode=='D')||(mode=='P')) halScreen.CursorState=mode | (AlphaMode<<24);
else {
halScreen.CursorState='D';
if((mode=='L')||(mode=='C')||(mode=='X')) {
halScreen.CursorState<<=24;
if(mode!='X') halScreen.CursorState|=mode;
else halScreen.CursorState|=AlphaMode;
}
else halScreen.CursorState|=AlphaMode<<24;
}
halScreen.XVisible=0;
halScreen.CursorTimer=tmr_eventcreate(&__uicursorupdate,700,1);
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
// CLOSE THE COMMAND LINE
void uiCloseCmdLine()
{
if(halScreen.CursorTimer>=0) {
tmr_eventkill(halScreen.CursorTimer);
halScreen.CursorTimer=-1;
}
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
halScreen.LineCurrent=1;
halScreen.LineIsModified=-1;
halScreen.LineVisible=1;
halScreen.NumLinesVisible=1;
halScreen.CursorX=0;
halScreen.CursorPosition=0;
halScreen.CursorState&=0xff0000ff;
halScreen.XVisible=0;
if(halScreen.CmdLineState&CMDSTATE_ACACTIVE) halScreen.DirtyFlag|=STAREA_DIRTY;
halScreen.CmdLineState=0;
halScreen.ACSuggestion=0;
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
void uiSetCurrentLine(BINT line)
{
if(line==halScreen.LineCurrent) return;
// LOCK CURSOR
halScreen.CursorState|=0x4000;
if(halScreen.LineIsModified>0) {
// INSERT THE MODIFIED TEXT BACK INTO ORIGINAL TEXT
uiModifyLine(0);
if(Exceptions) return;
}
halScreen.LineCurrent=line;
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
// POSITION THE CURSOR IN THE NEW LINE, TRYING TO PRESERVE THE X COORDINATE
BINT len=rplStrSize(CmdLineCurrentLine);
BINT targetx=halScreen.CursorX;
BYTEPTR ptr=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR ptr2=(BYTEPTR)StringCoordToPointer((char *)ptr,(char *)ptr+len,halScreen.CmdLineFont,&targetx);
halScreen.CursorX=targetx;
halScreen.CursorPosition=ptr2-ptr;
uiEnsureCursorVisible();
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
// MAIN FUNCTION TO INSERT TEXT AT THE CURRENT CURSOR OFFSET
void uiInsertCharacters(BYTEPTR string)
{
BYTEPTR end=string+stringlen((char *)string);
uiInsertCharactersN(string,end);
}
void uiInsertCharactersN(BYTEPTR string,BYTEPTR endstring)
{
if(endstring<=string) return;
// LOCK CURSOR
halScreen.CursorState|=0x4000;
BINT length=endstring-string;
BINT lenwords=(length+3)>>2;
// PROTECT string FROM POSSIBLE GC
ScratchPointer1=(WORDPTR)string;
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
if(CmdLineCurrentLine==(WORDPTR)empty_string) {
WORDPTR newobj=rplAllocTempOb(lenwords);
if(!newobj) {
throw_dbgexception("No memory to insert text",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
CmdLineCurrentLine=newobj;
*CmdLineCurrentLine=MKPROLOG(DOSTRING,0); // MAKE AN EMPTY STRING
}
else {
BINT totallen=rplStrSize(CmdLineCurrentLine)+length;
lenwords=(totallen+3)>>2;
if(rplSkipOb(CmdLineCurrentLine)==TempObEnd) rplResizeLastObject(lenwords-OBJSIZE(*CmdLineCurrentLine));
else {
// NOT AT THE END OF TEMPOB
// MAKE A COPY OF THE OBJECT AT THE END
WORDPTR newobj=rplAllocTempOb(lenwords);
if(!newobj) {
throw_dbgexception("No memory to insert text",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
rplCopyObject(newobj,CmdLineCurrentLine);
CmdLineCurrentLine=newobj;
}
}
if(Exceptions) {
throw_dbgexception("No memory to insert text",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
// FINALLY, WE HAVE THE ORIGINAL LINE AT THE END OF TEMPOB, AND ENOUGH MEMORY ALLOCATED TO MAKE THE MOVE
// MOVE THE TAIL TO THE END
memmoveb( ((BYTEPTR)CmdLineCurrentLine)+4+halScreen.CursorPosition+length,((BYTEPTR)CmdLineCurrentLine)+4+halScreen.CursorPosition,rplStrSize(CmdLineCurrentLine)-halScreen.CursorPosition);
// ADD THE NEW DATA IN
memmoveb(((BYTEPTR)CmdLineCurrentLine)+4+halScreen.CursorPosition,ScratchPointer1,length);
// PATCH THE LENGTH OF THE STRING
BINT newlen=rplStrSize(CmdLineCurrentLine);
newlen+=length;
rplSetStringLength(CmdLineCurrentLine,newlen);
halScreen.LineIsModified=1;
// ADVANCE THE CURSOR
// IF THE INSERTED TEXT HAD ANY NEWLINES, THE CURRENT COMMAND LINE HAS MULTIPLE LINES IN ONE
BYTEPTR newstart=((BYTEPTR)CmdLineCurrentLine)+4+halScreen.CursorPosition;
BYTEPTR newend=newstart+length;
BINT nl=0;
while(newstart!=newend) {
if(*newstart=='\n') ++nl;
newstart=(BYTEPTR)utf8skip((char *)newstart,(char *)newend);
}
if(nl) {
// MUST SPLIT THE LINES AND GET THE CURSOR ON THE LAST ONE
// FIRST, UPDATE THE CURRENT TEXT WITH THE NEW LINE
uiModifyLine(0);
if(Exceptions) return;
BINT newoff=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent);
BINT oldoff=halScreen.CursorPosition;
BINT newline=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent+nl);
if(newline<0) newline=rplStrSize(CmdLineText);
newoff+=halScreen.CursorPosition+length;
newoff-=newline;
// MOVE THE CURRENT SELECTION
if(halScreen.SelStartLine==halScreen.LineCurrent) {
if(halScreen.SelStart>=halScreen.CursorPosition) {
halScreen.SelStartLine+=nl;
halScreen.SelStart+=newoff-oldoff;
}
}
else {
if(halScreen.SelStartLine>halScreen.LineCurrent) halScreen.SelStartLine+=nl;
}
if(halScreen.SelEndLine==halScreen.LineCurrent) {
if(halScreen.SelEnd>=halScreen.CursorPosition) {
halScreen.SelEndLine+=nl;
halScreen.SelEnd+=newoff-oldoff;
}
}
else {
if(halScreen.SelEndLine>halScreen.LineCurrent) halScreen.SelEndLine+=nl;
}
uiSetCurrentLine(halScreen.LineCurrent+nl);
uiMoveCursor(newoff);
}
else {
halScreen.CursorX+=StringWidthN(((char *)CmdLineCurrentLine)+4+halScreen.CursorPosition,((char *)CmdLineCurrentLine)+4+halScreen.CursorPosition+length,halScreen.CmdLineFont);
// MOVE CURRENT SELECTION
if((halScreen.SelStartLine==halScreen.LineCurrent)&&(halScreen.SelStart>=halScreen.CursorPosition)) halScreen.SelStart+=length;
if((halScreen.SelEndLine==halScreen.LineCurrent)&&(halScreen.SelEnd>=halScreen.CursorPosition)) halScreen.SelEnd+=length;
halScreen.CursorPosition+=length;
}
halScreen.DirtyFlag|=CMDLINE_LINEDIRTY|CMDLINE_CURSORDIRTY;
uiEnsureCursorVisible();
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
}
// MAIN FUNCTION TO REMOVE TEXT AT THE CURRENT CURSOR OFFSET
void uiRemoveCharacters(BINT length)
{
if(length<=0) return;
int numlines=0;
// LOCK CURSOR
halScreen.CursorState|=0x4000;
do {
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) return;
}
if(rplSkipOb(CmdLineCurrentLine)!=TempObEnd) {
// NOT AT THE END OF TEMPOB
// MAKE A COPY OF THE OBJECT AT THE END
WORDPTR newobj=rplAllocTempOb(OBJSIZE(*CmdLineCurrentLine));
if(!newobj) {
throw_dbgexception("No memory to insert text",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
rplCopyObject(newobj,CmdLineCurrentLine);
CmdLineCurrentLine=newobj;
}
// FINALLY, WE HAVE THE ORIGINAL LINE AT THE END OF TEMPOB, AND ENOUGH MEMORY ALLOCATED TO MAKE THE MOVE
BINT tailchars=rplStrSize(CmdLineCurrentLine)-halScreen.CursorPosition;
BYTEPTR delete_start=((BYTEPTR)CmdLineCurrentLine)+4+halScreen.CursorPosition;
BYTEPTR delete_end=(BYTEPTR) utf8nskipst((char *)delete_start,(char *)delete_start+tailchars,length);
BINT actualcount=utf8nlen((char *)delete_start,(char *)delete_end);
// MOVE THE TAIL TO THE END
memmoveb( delete_start,delete_end,delete_start+tailchars-delete_end);
// PATCH THE LENGTH OF THE STRING
BINT newlen=rplStrSize(CmdLineCurrentLine);
newlen-=delete_end-delete_start;
rplSetStringLength(CmdLineCurrentLine,newlen);
// TRUNCATE THE OBJECT TO RELEASE MEMORY
rplTruncateLastObject(rplSkipOb(CmdLineCurrentLine));
length-=actualcount;
halScreen.LineIsModified=1;
if(halScreen.SelStartLine==halScreen.LineCurrent) {
if(halScreen.SelStart>halScreen.CursorPosition) {
halScreen.SelStart-=delete_end-delete_start;
if(halScreen.SelStart<halScreen.CursorPosition) halScreen.SelStart=halScreen.CursorPosition;
}
}
if(halScreen.SelEndLine==halScreen.LineCurrent) {
if(halScreen.SelEnd>halScreen.CursorPosition) {
halScreen.SelEnd-=delete_end-delete_start;
if(halScreen.SelEnd<halScreen.CursorPosition) halScreen.SelEnd=halScreen.CursorPosition;
}
}
if(length>0) {
// MORE CHARACTERS TO BE REMOVED!
uiModifyLine(1); // MODIFY THE LINE, REMOVE THE NEWLINE AT THE END
if(Exceptions) return;
--length;
if(halScreen.SelStartLine>halScreen.LineCurrent) {
--halScreen.SelStartLine;
if(halScreen.SelStartLine==halScreen.LineCurrent) halScreen.SelStart+=halScreen.CursorPosition;
}
if(halScreen.SelEndLine>halScreen.LineCurrent) {
--halScreen.SelEndLine;
if(halScreen.SelEndLine==halScreen.LineCurrent) halScreen.SelEnd+=halScreen.CursorPosition;
}
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) return;
++numlines;
}
} while(length>0);
if(!numlines) halScreen.DirtyFlag|=CMDLINE_LINEDIRTY|CMDLINE_CURSORDIRTY;
else halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
}
// IF THE LAST CHARACTER IS NOT A BLANK, THEN INSERT A BLANK SPACE
void uiSeparateToken()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
BYTEPTR start=(BYTEPTR) (CmdLineCurrentLine+1);
BYTEPTR lastchar=start+halScreen.CursorPosition-1;
if(lastchar>=start) {
if(*lastchar!=' ') uiInsertCharacters((BYTEPTR)" ");
}
}
// COPY THE EDITED LINE BACK INTO THE ORIGINAL TEXT
// CREATES A COPY OF THE TEXT
void uiModifyLine(int dontaddnewline)
{
WORDPTR newobj;
BINT newsize;
// GET A NEW OBJECT WITH ROOM FOR THE ENTIRE TEXT
newobj=rplAllocTempOb( (rplStrSize(CmdLineText)+rplStrSize(CmdLineCurrentLine)+1+ 3)>>2);
if(Exceptions) {
throw_dbgexception("No memory to insert text",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
BYTEPTR src=(BYTEPTR)(CmdLineText+1),dest=(BYTEPTR)(newobj+1);
BINT totallen=rplStrSize(CmdLineText);
BINT lineoff=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent);
if(lineoff<0) lineoff=totallen;
BYTEPTR startline=src+lineoff;
lineoff=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent+1);
if(lineoff<0) lineoff=totallen;
BYTEPTR endline=src+lineoff;
if(endline>startline) {
if((!dontaddnewline)&&(*(endline-1)=='\n')) --endline;
}
// COPY ALL PREVIOUS LINES TO NEW OBJECT
newsize=startline-src+rplStrSize(CmdLineCurrentLine);
memmoveb(dest,src,startline-src);
// COPY THE NEW LINE TO THE OBJECT
memmoveb(dest+(startline-src),(WORDPTR)(CmdLineCurrentLine+1),rplStrSize(CmdLineCurrentLine));
// COPY THE REST BACK
if(endline<src+totallen) {
// APPEND A NEWLINE AND KEEP GOING
dest+=startline-src+rplStrSize(CmdLineCurrentLine);
newsize+=src+totallen-endline;
if((!dontaddnewline)&&(*endline!='\n')) { *dest++='\n'; ++newsize; }
memmoveb(dest,endline,src+totallen-endline);
}
rplSetStringLength(newobj,newsize);
CmdLineText=newobj;
halScreen.LineIsModified=0;
}
// COPY A LINE FROM THE TEXT INTO THE EDITING BUFFER
void uiExtractLine(BINT line)
{
WORDPTR newobj;
// GET A NEW OBJECT WITH ROOM FOR THE ENTIRE LINE
BYTEPTR text=(BYTEPTR)(CmdLineText+1);
BYTEPTR startline=text+rplStringGetLinePtr(CmdLineText,line);
BYTEPTR endline=text+rplStringGetLinePtr(CmdLineText,line+1);
if(startline<text) {
// CREATE AN EMPTY LINE
startline=endline=text;
}
if(endline<text) endline=text+rplStrSize(CmdLineText);
if(endline>startline) {
// DO NOT EXTRACT THE FINAL NEWLINE CHARACTER
if(*(endline-1)=='\n') --endline;
}
newobj=rplAllocTempOb( ((endline-startline)+ 3)>>2);
if(Exceptions) {
throw_dbgexception("No memory to insert text",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
// ZERO PADDING THE LAST WORD
newobj[(endline-startline)>>2]=0;
// COPY LINE TO NEW OBJECT
memmoveb(newobj+1,startline,endline-startline);
rplSetStringLength(newobj,endline-startline);
CmdLineCurrentLine=newobj;
halScreen.LineIsModified=0;
}
// MOVE THE CURSOR TO THE GIVEN OFFSET WITHIN THE STRING
void uiMoveCursor(BINT offset)
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
BYTEPTR ptr=(BYTEPTR )(CmdLineCurrentLine+1),ptr2;
BINT len=rplStrSize(CmdLineCurrentLine);
if(offset>len) offset=len;
if(offset<0) offset=0;
halScreen.CursorState|=0x4000;
// AVOID USING OFFSET THAT FALLS BETWEEN BYTES OF THE SAME CODEPOINT
ptr2=(BYTEPTR)utf8findst((char *)ptr+offset,(char *)ptr+len);
//while((ptr2-ptr<offset)&&(ptr2<ptr+len)) ptr2=(BYTEPTR)utf8skip((char *)ptr2,(char *)ptr+len);
offset=ptr2-ptr;
halScreen.CursorPosition=offset;
halScreen.CursorX=StringWidthN((char *)ptr,(char *)ptr2,halScreen.CmdLineFont);
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_LINEDIRTY|CMDLINE_CURSORDIRTY;
}
// MOVE THE CURSOR LEFT, NCHARS IS GIVEN IN UNICODE CODEPOINTS
void uiCursorLeft(BINT nchars)
{
BYTEPTR ptr,ptr2;
BINT offset;
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
ptr=(BYTEPTR )(CmdLineCurrentLine+1);
// AVOID USING OFFSET THAT FALLS BETWEEN BYTES OF THE SAME CODEPOINT
ptr2=ptr+halScreen.CursorPosition;
while(nchars &&(ptr2>ptr)) {
ptr2=(BYTEPTR)utf8rskipst((char *)ptr2,(char *)ptr);
--nchars;
}
if(nchars) {
// THERE'S MORE CHARACTERS LEFT!
if(halScreen.LineCurrent==1) {
// BEGINNING OF FIRST LINE, NOWHERE ELSE TO GO
nchars=0;
}
else {
if(halScreen.LineIsModified>0) {
// INSERT THE MODIFIED TEXT BACK INTO ORIGINAL TEXT
uiModifyLine(0);
if(Exceptions) return;
}
// RELOAD VALUES FOR THE WHOLE TEXT
offset=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent);
if(offset<0) offset=rplStrSize(CmdLineText);
ptr=(BYTEPTR )(CmdLineText+1);
ptr2=ptr+offset; // THIS IS THE BEGINNING OF THE CURRENT LINE
while(nchars &&(ptr2>ptr)) {
ptr2=(BYTEPTR)utf8rskipst((char *)ptr2,(char *)ptr);
if(*ptr2=='\n') --halScreen.LineCurrent;
--nchars;
}
if(nchars) nchars=0; // NO MORE TEXT!
if(halScreen.LineCurrent<1) halScreen.LineCurrent=1;
offset=ptr2-uiGetStartOfLine(ptr2,ptr);
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
uiMoveCursor(offset);
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
uiEnsureCursorVisible();
return;
}
}
offset=ptr2-ptr;
halScreen.CursorPosition=offset;
halScreen.CursorX=StringWidthN((char *)ptr,(char *)ptr2,halScreen.CmdLineFont);
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_LINEDIRTY|CMDLINE_CURSORDIRTY;
uiEnsureCursorVisible();
}
void uiCursorRight(BINT nchars)
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
BYTEPTR ptr=(BYTEPTR )(CmdLineCurrentLine+1),ptr2;
BINT len=rplStrSize(CmdLineCurrentLine);
BINT offset;
// AVOID USING OFFSET THAT FALLS BETWEEN BYTES OF THE SAME CODEPOINT
ptr2=ptr+halScreen.CursorPosition;
while(nchars &&(ptr2<ptr+len)) { ptr2=(BYTEPTR)utf8skipst((char *)ptr2,(char *)ptr+len); --nchars; }
if(nchars) {
// THERE'S MORE CHARACTERS LEFT!
BINT totallines=rplStringCountLines(CmdLineText);
if(halScreen.LineCurrent==totallines) {
// LAST LINE, NOWHERE ELSE TO GO
nchars=0;
}
else {
if(halScreen.LineIsModified>0) {
// INSERT THE MODIFIED TEXT BACK INTO ORIGINAL TEXT
uiModifyLine(0);
if(Exceptions) return;
}
// RELOAD VALUES FOR THE WHOLE TEXT
offset=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent);
if(offset<0) offset=rplStrSize(CmdLineText);
ptr=(BYTEPTR )(CmdLineText+1);
len=rplStrSize(CmdLineText);
ptr2=uiGetEndOfLine(ptr+offset,ptr+len); // THIS IS THE END OF THE CURRENT LINE
while(nchars &&(ptr2<ptr+len)) {
if(*ptr2=='\n') ++halScreen.LineCurrent;
ptr2=(BYTEPTR)utf8skipst((char *)ptr2,(char *)ptr+len);
--nchars;
}
if(nchars) nchars=0; // NO MORE TEXT!
if(halScreen.LineCurrent>totallines) halScreen.LineCurrent=totallines;
offset=ptr2-uiGetStartOfLine(ptr2,ptr);
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
uiMoveCursor(offset);
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
uiEnsureCursorVisible();
return;
}
}
offset=ptr2-ptr;
halScreen.CursorPosition=offset;
halScreen.CursorX=StringWidthN((char *)ptr,(char *)ptr2,halScreen.CmdLineFont);
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_LINEDIRTY|CMDLINE_CURSORDIRTY;
uiEnsureCursorVisible();
}
// MOVE THE CURSOR DOWN BY NLINES
void uiCursorDown(BINT nlines)
{
BINT totallines=rplStringCountLines(CmdLineText);
BINT newline=halScreen.LineCurrent+nlines;
if(newline>totallines) newline=totallines;
if(newline<1) newline=1;
uiSetCurrentLine(newline);
}
// MOVE THE CURSOR UP BY NLINES
void uiCursorUp(BINT nlines)
{
uiCursorDown(-nlines);
}
void uiCursorEndOfLine()
{
uiMoveCursor(2147483647);
uiEnsureCursorVisible();
}
void uiCursorStartOfLine()
{
uiMoveCursor(0);
uiEnsureCursorVisible();
}
void uiCursorStartOfText()
{
uiSetCurrentLine(1);
uiCursorStartOfLine();
}
void uiCursorEndOfText()
{
uiSetCurrentLine(rplStringCountLines(CmdLineText));
uiCursorEndOfLine();
}
void uiCursorPageRight()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
// POSITION THE CURSOR TRYING TO PRESERVE THE X COORDINATE
BINT len=rplStrSize(CmdLineCurrentLine);
BINT targetx=halScreen.CursorX+SCREEN_WIDTH;
BYTEPTR ptr=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR ptr2=(BYTEPTR)StringCoordToPointer((char *)ptr,(char *)ptr+len,halScreen.CmdLineFont,&targetx);
halScreen.CursorX=targetx;
halScreen.CursorPosition=ptr2-ptr;
uiEnsureCursorVisible();
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_CURSORDIRTY|CMDLINE_LINEDIRTY;
}
void uiCursorPageLeft()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
// POSITION THE CURSOR TRYING TO PRESERVE THE X COORDINATE
BINT len=rplStrSize(CmdLineCurrentLine);
BINT targetx=halScreen.CursorX-SCREEN_WIDTH;
BYTEPTR ptr=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR ptr2=(BYTEPTR)StringCoordToPointer((char *)ptr,(char *)ptr+len,halScreen.CmdLineFont,&targetx);
halScreen.CursorX=targetx;
halScreen.CursorPosition=ptr2-ptr;
uiEnsureCursorVisible();
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
halScreen.DirtyFlag|=CMDLINE_CURSORDIRTY|CMDLINE_LINEDIRTY;
}
void uiCursorPageUp()
{
BINT linesperpage=halScreen.NumLinesVisible;
if(linesperpage<6) linesperpage=6;
uiCursorDown(-linesperpage);
}
void uiCursorPageDown()
{
BINT linesperpage=halScreen.NumLinesVisible;
if(linesperpage<6) linesperpage=6;
uiCursorDown(linesperpage);
}
// FIND THE START OF A NUMBER IN THE COMMAND LINE, ONLY USED BY +/- ROUTINE
BYTEPTR uiFindNumberStart()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return NULL;
}
}
BYTEPTR line=(BYTEPTR )(CmdLineCurrentLine+1);
BYTEPTR end,start,ptr;
BINT len=rplStrSize(CmdLineCurrentLine);
BINT flags;
// FIND NUMBER BEFORE
ptr=line+halScreen.CursorPosition;
end=ptr;
start=NULL;
flags=0;
while(end<line+len) {
if((*end>='0')&&(*end<='9')) { ++end; continue; }
if(*end=='.') { ++end; continue; }
if((*end>='A')&&(*end<='F')) { if(!start) start=end; ++end; continue; }
if((*end>='a')&&(*end<='f')) { if(!start) start=end; ++end; continue; }
if(*end=='h') { flags=3; break; }
if(*end=='o') { if(start) end=start; else flags=1; break; }
// ANY OTHER CHARACTER ENDS THE NUMBER
if(start) {
end=start;
if(*end=='b') flags=1;
if(*end=='d') flags=1;
}
break;
}
// HERE WE HAVE THE END OF THE NUMBER, AND flags=1 IF THE NUMBER STARTS WITH #
// NOW FIND THE START OF THE NUMBER
start=ptr;
if(start>=end) start=end-1;
while(start>=line) {
if((*start>='0')&&(*start<='9')) { --start; continue; }
if(*start=='.') { --start; continue; }
if((flags&2)&&(*start>='A')&&(*start<='F')) { --start; continue; }
if((flags&2)&&(*start>='a')&&(*start<='f')) {--start; continue; }
// ANY OTHER CHARACTER SHOULD END THE NUMBER
if((flags&1)&&(*start=='#')) break;
++start;
break;
}
if(start<line) start=line;
// HERE START POINTS TO THE FIRST CHARACTER IN THE NUMBER
if(start>=end) return NULL; // THERE WAS NO NUMBER
return start;
}
// ADD OR SUBTRACT VISIBLE LINES TO THE OPEN COMMAND LINE
void uiStretchCmdLine(BINT addition)
{
if(!(halScreen.CmdLineState&CMDSTATE_OPEN)) return;
if(halScreen.CmdLineState&CMDSTATE_FULLSCREEN) return;
halScreen.NumLinesVisible+=addition;
if(halScreen.NumLinesVisible<1) halScreen.NumLinesVisible=1;
halSetCmdLineHeight(halScreen.CmdLineFont->BitmapHeight*halScreen.NumLinesVisible+2);
if(halScreen.CmdLine!=halScreen.CmdLineFont->BitmapHeight*halScreen.NumLinesVisible+2) {
// NO ROOM, ADJUST NUMBER OF VISIBLE LINES
BINT actuallines=(halScreen.CmdLine-2)/halScreen.CmdLineFont->BitmapHeight;
halScreen.NumLinesVisible=actuallines;
if(halScreen.NumLinesVisible<1) halScreen.NumLinesVisible=1;
}
}
// CALL THIS FUNCTION WHENEVER THE COMMAND LINE CHANGES, TO INDICATE THE
// AUTOCOMPLETE FUNCTION NEEDS TO BE UPDATED
void uiAutocompleteUpdate()
{
// LOOK AT THE TEXT TO THE LEFT OF THE CURSOR FOR A TOKEN
// THEN START A NEW SEARCH
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
BYTEPTR start=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR end=start+halScreen.CursorPosition;
BYTEPTR ptr,tokptr=(BYTEPTR)utf8rskipst((char *)end,(char *)start);
BINT char1,char2;
// THESE ARE CHARACTERS THAT WOULD STOP A TOKEN SEARCH
static const char const forbiddenChars[]="{}[]()#;:, \"\'_`@|«»"; // OUTSIDE OF ALG. MODE
static const char const algforbiddenChars[]="+-*/\\{}[]()#!^;:<>=, \"\'_`@|√«»≤≥≠→∡"; // IN ALG. MODE
const char *forbstring=( (halScreen.CursorState&0xff)=='A')? algforbiddenChars:forbiddenChars;
while(tokptr>=start) {
ptr=(BYTEPTR )forbstring;
char1=utf82cp((char *)tokptr,(char *)end);
do {
char2=utf82cp((char *)ptr,(char *)ptr+4);
if(char1==char2) {
tokptr=(BYTEPTR)utf8skip((char *)tokptr,(char *)end);
break;
}
ptr=(BYTEPTR)utf8skip((char *)ptr,(char *)ptr+4);
} while(*ptr);
if(*ptr) {
// WE FOUND THE START OF THE TOKEN
break;
}
if(tokptr>start) tokptr=(BYTEPTR)utf8rskipst((char *)tokptr,(char *)start);
else --tokptr;
}
if(tokptr<start) tokptr=start;
// HERE WE HAVE THE ISOLATED TOKEN WE WANT TO AUTOCOMPLETE
halScreen.ACTokenStart=tokptr-start;
BINT oldstate=halScreen.CmdLineState&CMDSTATE_ACACTIVE;
if(tokptr==end) halScreen.CmdLineState&=~(CMDSTATE_ACACTIVE|CMDSTATE_ACUPDATE);
else halScreen.CmdLineState|=CMDSTATE_ACUPDATE|CMDSTATE_ACACTIVE;
halScreen.ACSuggestion=rplGetNextSuggestion(-1,tokptr,end);
if(oldstate || (oldstate!=(halScreen.CmdLineState&CMDSTATE_ACACTIVE))) halScreen.DirtyFlag|=STAREA_DIRTY;
}
void uiAutocompNext()
{
if(halScreen.CmdLineState&CMDSTATE_ACACTIVE) {
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
BYTEPTR start=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR end=start+halScreen.CursorPosition;
halScreen.ACSuggestion=rplGetNextSuggestion(halScreen.ACSuggestion,start+halScreen.ACTokenStart,end);
//if(!halScreen.ACSuggestion) halScreen.ACSuggestion=rplGetNextSuggestion(halScreen.ACSuggestion,start+halScreen.ACTokenStart,end);
halScreen.CmdLineState|=CMDSTATE_ACUPDATE;
halScreen.DirtyFlag|=STAREA_DIRTY;
}
}
void uiAutocompPrev()
{
if(halScreen.CmdLineState&CMDSTATE_ACACTIVE) {
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return;
}
}
BYTEPTR start=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR end=start+halScreen.CursorPosition;
halScreen.ACSuggestion=rplGetPrevSuggestion(halScreen.ACSuggestion,start+halScreen.ACTokenStart,end);
halScreen.CmdLineState|=CMDSTATE_ACUPDATE;
halScreen.DirtyFlag|=STAREA_DIRTY;
}
}
// INSERT THE CURRENT SUGGESTION IN THE COMMAND LINE
void uiAutocompInsert()
{
if(halScreen.ACSuggestion!=0) {
BYTEPTR tokstart=uiAutocompStringStart();
BYTEPTR tokend=uiAutocompStringEnd();
WORDPTR cmdname=rplDecompile(&halScreen.ACSuggestion,0);
BYTEPTR namest=(BYTEPTR)(cmdname+1);
BYTEPTR nameend=namest+rplStrSize(cmdname);
if( (!cmdname) || Exceptions) {
// JUST IGNORE, CLEAR EXCEPTIONS AND RETURN;
Exceptions=0;
return;
}
// MOVE THE CURSOR TO THE START OF THE TOKEN;
BINT nchars=0;
while(tokstart!=tokend) { ++nchars; tokstart=(BYTEPTR)utf8skipst((char *)tokstart,(char *)tokend); }
uiCursorLeft(nchars);
uiInsertCharactersN(namest,nameend);
uiRemoveCharacters(nchars);
}
}
BYTEPTR uiAutocompStringStart()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return NULL;
}
}
BYTEPTR start=(BYTEPTR)(CmdLineCurrentLine+1);
return start+halScreen.ACTokenStart;
}
BYTEPTR uiAutocompStringEnd()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return NULL;
}
}
BYTEPTR start=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR end=start+halScreen.CursorPosition;
return end;
}
BYTEPTR uiAutocompStringTokEnd()
{
if(halScreen.LineIsModified<0) {
uiExtractLine(halScreen.LineCurrent);
if(Exceptions) {
throw_dbgexception("No memory for command line",__EX_CONT|__EX_WARM|__EX_RESET);
// CLEAN UP AND RETURN
CmdLineText=(WORDPTR)empty_string;
CmdLineCurrentLine=(WORDPTR)empty_string;
CmdLineUndoList=(WORDPTR)empty_list;
return NULL;
}
}
BYTEPTR start=(BYTEPTR)(CmdLineCurrentLine+1);
BYTEPTR end=start+halScreen.CursorPosition;
return end;
}
// SET SELECTION START AT THE CURRENT CURSOR POSITION
void uiSetSelectionStart()
{
halScreen.SelStart=halScreen.CursorPosition;
halScreen.SelStartLine=halScreen.LineCurrent;
if(halScreen.SelEndLine<halScreen.SelStartLine) {
halScreen.SelEndLine=-1;
halScreen.SelEnd=0;
}
else {
if(halScreen.SelEndLine==halScreen.SelStartLine) {
if(halScreen.SelEnd<halScreen.SelStart) { halScreen.SelEndLine=-1; halScreen.SelEnd=0; }
}
}
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
// SET SELECTION START AT THE CURRENT CURSOR POSITION
void uiSetSelectionEnd()
{
halScreen.SelEnd=halScreen.CursorPosition;
halScreen.SelEndLine=halScreen.LineCurrent;
if(halScreen.SelStartLine>halScreen.SelEndLine) {
halScreen.SelStartLine=-1;
halScreen.SelStart=0;
}
else {
if(halScreen.SelStartLine<0) {
halScreen.SelStartLine=1;
halScreen.SelStart=0;
}
if(halScreen.SelEndLine==halScreen.SelStartLine) {
if(halScreen.SelEnd<halScreen.SelStart) { halScreen.SelStartLine=-1; halScreen.SelStart=0; }
}
}
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
}
// CREATE A NEW RPL STRING WITH THE TEXT SELECTED IN THE EDITOR
WORDPTR uiExtractSelection()
{
if(!(halScreen.CmdLineState&CMDSTATE_OPEN)) return 0;
if(halScreen.SelStartLine<0) return 0;
if(halScreen.SelEndLine<0) return 0;
// COMMIT ANY CHANGES TO THE CURRENT LINE
if(halScreen.LineIsModified>0) uiModifyLine(0);
if(Exceptions) return 0;
BINT selst=rplStringGetLinePtr(CmdLineText,halScreen.SelStartLine)+halScreen.SelStart;
BINT selend=rplStringGetLinePtr(CmdLineText,halScreen.SelEndLine)+halScreen.SelEnd;
if(selend<=selst) return 0;
// HERE WE NEED TO CREATE A NEW OBJECT
WORDPTR newstr=rplCreateString((BYTEPTR)(CmdLineText+1)+selst,(BYTEPTR)(CmdLineText+1)+selend);
return newstr;
}
BINT uiDeleteSelection()
{
if(!(halScreen.CmdLineState&CMDSTATE_OPEN)) return 0;
if(halScreen.SelStartLine<0) return 0;
if(halScreen.SelEndLine<0) return 0;
// COMMIT ANY CHANGES TO THE CURRENT LINE
if(halScreen.LineIsModified>0) uiModifyLine(0);
if(Exceptions) return 0;
BINT selst=rplStringGetLinePtr(CmdLineText,halScreen.SelStartLine)+halScreen.SelStart;
BINT selend=rplStringGetLinePtr(CmdLineText,halScreen.SelEndLine)+halScreen.SelEnd;
BINT cursorpos=rplStringGetLinePtr(CmdLineText,halScreen.LineCurrent)+halScreen.CursorPosition;
if(selend<=selst) return 0;
uiSetCurrentLine(halScreen.SelStartLine);
uiMoveCursor(halScreen.SelStart);
uiRemoveCharacters(utf8nlen((char *)(CmdLineText+1)+selst,(char *)(CmdLineText+1)+selend));
// NOW MOVE BACK TO THE PREVIOUS CURSOR POSITION
if(cursorpos>selend) cursorpos-=selend-selst;
else if(cursorpos>selst) cursorpos=selst;
uiSetCurrentLine(uiGetLinebyOffset(cursorpos,0));
uiMoveCursor(cursorpos);
halScreen.SelEndLine=halScreen.SelStartLine=-1;
halScreen.SelEnd=halScreen.SelStart=0;
return 1;
}
// EXPORTED API FUNCTION FROM THE HAL TO LIBRARIES
// STORE ALL COMMAND LINE SETTINGS INTO AN RPL OBJECT
// MUST BE ABLE TO RESTORE THE COMMAND LINE COMPLETELY
// FROM THIS INFORMATION ALONE, AS IF NOTHING HAPPENED
WORDPTR halSaveCmdLine()
{
WORDPTR *savestk=DSTop;
// COMMIT ANY CHANGES TO THE CURRENT LINE
if(halScreen.LineIsModified>0) uiModifyLine(0);
if(Exceptions) { DSTop=savestk; return 0; }
// START PUSHING DATA ON THE STACK FOR THE LIST
rplPushData(CmdLineText);
rplPushData(CmdLineUndoList);
// SCREEN PRESENTATION
rplNewBINTPush(halScreen.CmdLine,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.CmdLineState,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.LineCurrent,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.LineVisible,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.NumLinesVisible,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.XVisible,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.CursorPosition,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
// LOCK CURSOR
halScreen.CursorState|=0x4000;
rplNewBINTPush(halScreen.CursorState,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
// SELECTION
rplNewBINTPush(halScreen.SelStart,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.SelStartLine,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.SelEnd,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.SelEndLine,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
// AUTOCOMPLETE
rplNewBINTPush(halScreen.ACSuggestion,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
rplNewBINTPush(halScreen.ACTokenStart,DECBINT);
if(Exceptions) { DSTop=savestk; return 0; }
WORDPTR list=rplCreateListN(16);
if(!list || Exceptions) { DSTop=savestk; return 0; }
return list;
}
// EXPORTED HAL API FOR LIBRARIES, CAN FULLY RESTORE A COMMAND LINE STATE
// FROM A LIST OF DATA GENERATED BY halSaveCmdLine()
BINT halRestoreCmdLine(WORDPTR data)
{
if(!data) return 0;
if(!ISLIST(*data)) return 0;
if(halScreen.CmdLineState&CMDSTATE_OPEN) {
// THERE'S AN EXISTING COMMAND LINE, CLOSE IT FIRST
uiCloseCmdLine();
}
// NOW RESTORE FROM SCRATCH
WORDPTR ptr=rplGetListElement(data,1);
if(!ptr) { uiCloseCmdLine(); return 0; }
CmdLineText=ptr;
ptr=rplGetListElement(data,2);
if(!ptr) { uiCloseCmdLine(); return 0; }
CmdLineUndoList=ptr;
// SCREEN PRESENTATION
ptr=rplGetListElement(data,3);
if(!ptr) { uiCloseCmdLine(); return 0; }
halSetCmdLineHeight(rplReadNumberAsBINT(ptr));
ptr=rplGetListElement(data,4);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.CmdLineState=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,5);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.LineCurrent=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,6);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.LineVisible=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,7);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.NumLinesVisible=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,8);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.XVisible=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,9);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.CursorPosition=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,10);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.CursorState=rplReadNumberAsBINT(ptr);
// SELECTION
ptr=rplGetListElement(data,11);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.SelStart=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,12);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.SelStartLine=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,13);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.SelEnd=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,14);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.SelEndLine=rplReadNumberAsBINT(ptr);
// AUTOCOMPLETE
ptr=rplGetListElement(data,15);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.ACSuggestion=rplReadNumberAsBINT(ptr);
ptr=rplGetListElement(data,16);
if(!ptr) { uiCloseCmdLine(); return 0; }
halScreen.ACTokenStart=rplReadNumberAsBINT(ptr);
halScreen.LineIsModified=-1; // LINE IS EXISTING BUT NEEDS TO BE EXTRACTED
// START THE TIMER
halScreen.CursorTimer=tmr_eventcreate(&__uicursorupdate,700,1);
// UNLOCK CURSOR
halScreen.CursorState&=~0xc000;
uiMoveCursor(halScreen.CursorPosition);
halScreen.DirtyFlag|=CMDLINE_ALLDIRTY;
return 1;
}
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