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Editor.c
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Editor.c
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/***********************************************************************************************************************
PicoMite MMBasic
Editor.c
<COPYRIGHT HOLDERS> Geoff Graham, Peter Mather
Copyright (c) 2021, <COPYRIGHT HOLDERS> All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the distribution.
3. The name MMBasic be used when referring to the interpreter in any documentation and promotional material and the original copyright message be displayed
on the console at startup (additional copyright messages may be added).
4. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed
by the <copyright holder>.
5. Neither the name of the <copyright holder> nor the names of its contributors may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDERS> AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDERS> BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
************************************************************************************************************************/
#include "MMBasic_Includes.h"
#include "Hardware_Includes.h"
#define CTRLKEY(a) (a & 0x1f)
#define DISPLAY_CLS 1
#define REVERSE_VIDEO 3
#define CLEAR_TO_EOL 4
#define CLEAR_TO_EOS 5
#define SCROLL_DOWN 6
#define DRAW_LINE 7
#define GUI_C_NORMAL WHITE
#define GUI_C_BCOLOUR BLACK
#define GUI_C_COMMENT YELLOW
#define GUI_C_KEYWORD CYAN
#define GUI_C_QUOTE MAGENTA
#define GUI_C_NUMBER GREEN
#define GUI_C_LINE MAGENTA
#define GUI_C_STATUS WHITE
//======================================================================================
// Attribute VT100 Code VT 100 Colour LCD Screen Colour
//======================================================================================
#define VT100_C_NORMAL "\033[37m" // White Foreground Colour
#define VT100_C_COMMENT "\033[33m" // Yellow Yellow
#define VT100_C_KEYWORD "\033[36m" // Cyan Cyan
#define VT100_C_QUOTE "\033[35m" // Green Green
#define VT100_C_NUMBER "\033[32m" // Red Red
#define VT100_C_LINE "\033[35m" // White Grey
#define VT100_C_STATUS "\033[37m" // Black Brown
#define VT100_C_ERROR "\033[31m" // Red Red
// these two are the only global variables, the default place for the cursor when the editor opens
unsigned char *StartEditPoint = NULL;
int StartEditChar = 0;
static bool markmode=false;
extern void routinechecks(void);
int optioncolourcodesave;
#if !defined(LITE)
#ifdef PICOMITEVGA
int editactive=0;
static int r_on=0;
void DisplayPutClever(char c){
if((DISPLAY_TYPE==SCREENMODE1 && markmode && Option.ColourCode && ytileheight==gui_font_height && gui_font_width % 8 ==0)){
if(c >= FontTable[gui_font >> 4][2] && c < FontTable[gui_font >> 4][2] + FontTable[gui_font >> 4][3]) {
if(CurrentX + gui_font_width > HRes) {
DisplayPutClever('\r');
DisplayPutClever('\n');
}
}
// handle the standard control chars
switch(c) {
case '\b': CurrentX -= gui_font_width;
if (CurrentX < 0) CurrentX = 0;
return;
case '\r': CurrentX = 0;
return;
case '\n': CurrentY += gui_font_height;
if(CurrentY + gui_font_height >= VRes) {
ScrollLCD(CurrentY + gui_font_height - VRes);
CurrentY -= (CurrentY + gui_font_height - VRes);
}
return;
case '\t': do {
DisplayPutClever(' ');
} while((CurrentX/gui_font_width) % Option.Tab);
return;
}
#ifdef HDMI
if(r_on){
if(Option.CPU_Speed==Freq480P){
if(r_on)for(int i=0; i< gui_font_width / 8; i++)tilebcols[CurrentY/gui_font_height*X_TILE+CurrentX/8+i]=RGB555(BLUE);
}
else {
if(r_on)for(int i=0; i< gui_font_width / 8; i++)tilebcols_w[CurrentY/gui_font_height*X_TILE+CurrentX/8+i]=RGB332(BLUE);
}
}
#else
if(r_on)for(int i=0; i< gui_font_width / 8; i++)tilebcols[CurrentY/gui_font_height*X_TILE+CurrentX/8+i]=0x1111;
#endif
#ifdef HDMI
else {
if(Option.CPU_Speed==Freq480P){
for(int i=0; i< gui_font_width / 8; i++)tilebcols[CurrentY/gui_font_height*X_TILE+CurrentX/8+i]=Option.VGABC;
}
else {
for(int i=0; i< gui_font_width / 8; i++)tilebcols_w[CurrentY/gui_font_height*X_TILE+CurrentX/8+i]=Option.VGABC;
}
}
#else
else for(int i=0; i< gui_font_width / 8; i++)tilebcols[CurrentY/gui_font_height*X_TILE+CurrentX/8+i]=Option.VGABC;
#endif
CurrentX += gui_font_width;
} else DisplayPutC(c);
}
#endif
void DisplayPutS(char *s) {
while(*s) DisplayPutC(*s++);
}
void printnothing(char * dummy){
}
char nothingchar(char dummy,int flush){
return 0;
}
int OriginalFC, OriginalBC; // the original fore/background colours used by MMBasic
static void (*PrintString)(char *buff)=SSPrintString;
static char (*SSputchar)(char buff, int flush)=SerialConsolePutC;
// #define PrintString SSPrintString
#ifdef PICOMITEVGA
#define MX470PutC(c) DisplayPutClever(c)
#else
#define MX470PutC(c) DisplayPutC(c)
#endif
// Only SSD1963 displays support H/W scrolling so for other displays it is much quicker to redraw the screen than scroll it
// However, we don't want to redraw the serial console so we dummy out the serial writes whiole re-drawing the physical screen
#define MX470Scroll(n) if(Option.DISPLAY_CONSOLE){if(!(SPIREAD || Option.NoScroll))ScrollLCD(n);\
else {PrintString=printnothing;SSputchar=nothingchar;printScreen();PrintString=SSPrintString;SSputchar=SerialConsolePutC;}}
// #define dx(...) {char s[140];sprintf(s, __VA_ARGS__); SerUSBPutS(s); SerUSBPutS("\r\n");}
void MX470PutS(char *s, int fc, int bc) {
int tfc, tbc;
tfc = gui_fcolour; tbc = gui_bcolour;
gui_fcolour = fc; gui_bcolour = bc;
DisplayPutS(s);
gui_fcolour = tfc; gui_bcolour = tbc;
}
void MX470Cursor(int x, int y) {
if(Option.DISPLAY_CONSOLE) {
CurrentX = x;
CurrentY = y;
}
}
void MX470Display(int fn) {
int t;
if(!Option.DISPLAY_CONSOLE) return;
switch(fn) {
case DISPLAY_CLS: ClearScreen(gui_bcolour);
break;
#ifdef PICOMITEVGA
case REVERSE_VIDEO:
if((DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==gui_font_height)){
r_on^=1;
} else {
t = gui_fcolour;
gui_fcolour = gui_bcolour;
gui_bcolour = t;
}
break;
case CLEAR_TO_EOL: DrawBox(CurrentX, CurrentY, HRes-1, CurrentY + gui_font_height-1, 0, 0, DISPLAY_TYPE==SCREENMODE1 ? 0 : gui_bcolour);
#ifdef HDMI
if(Option.CPU_Speed==Freq480P){
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==gui_font_height){
for(int x=CurrentX/8;x<X_TILE;x++){
tilefcols[CurrentY/ytileheight*X_TILE+x]=RGB555(gui_fcolour);
tilebcols[CurrentY/ytileheight*X_TILE+x]=RGB555(gui_bcolour);
}
}
} else {
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==gui_font_height){
for(int x=CurrentX/8;x<X_TILE;x++){
tilefcols_w[CurrentY/ytileheight*X_TILE+x]=RGB332(gui_fcolour);
tilebcols_w[CurrentY/ytileheight*X_TILE+x]=RGB332(gui_bcolour);
}
}
}
#else
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==gui_font_height){
for(int x=CurrentX/8;x<X_TILE;x++){
tilefcols[CurrentY/ytileheight*X_TILE+x]=Option.VGAFC;
tilebcols[CurrentY/ytileheight*X_TILE+x]=Option.VGABC;
}
}
#endif
break;
#else
case REVERSE_VIDEO: t = gui_fcolour;
gui_fcolour = gui_bcolour;
gui_bcolour = t;
break;
case CLEAR_TO_EOL: DrawBox(CurrentX, CurrentY, HRes-1, CurrentY + gui_font_height-1, 0, 0, gui_bcolour);
break;
#endif
case CLEAR_TO_EOS: DrawBox(CurrentX, CurrentY, HRes-1, CurrentY + gui_font_height-1, 0, 0, gui_bcolour);
DrawRectangle(0, CurrentY + gui_font_height, HRes-1, VRes-1, gui_bcolour);
break;
case SCROLL_DOWN:
break;
case DRAW_LINE: DrawBox(0, gui_font_height * (Option.Height - 2), HRes - 1, VRes - 1, 0, 0, (DISPLAY_TYPE==SCREENMODE1 ? 0 :gui_bcolour));
DrawLine(0, VRes - gui_font_height - 6, HRes - 1, VRes - gui_font_height - 6, 1, GUI_C_LINE);
#ifdef PICOMITEVGA
#ifdef HDMI
if(Option.CPU_Speed==Freq480P){
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==12 && gui_font==1)for(int i=0; i<80; i++)tilefcols[38*X_TILE+i]=RGB555(MAGENTA);
} else if(Option.CPU_Speed==FreqXGA){
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==32 && gui_font==65)for(int i=0; i<128; i++)tilefcols_w[22*X_TILE+i]=RGB332(MAGENTA);
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==24 && gui_font==33)for(int i=0; i<128; i++)tilefcols_w[30*X_TILE+i]=RGB332(MAGENTA);
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==12 && gui_font==1)for(int i=0; i<128; i++)tilefcols_w[62*X_TILE+i]=RGB332(MAGENTA);
} else if(Option.CPU_Speed==Freq720P){
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==32 && gui_font==65)for(int i=0; i<160; i++)tilefcols_w[20*X_TILE+i]=RGB332(MAGENTA);
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==24 && gui_font==33)for(int i=0; i<160; i++)tilefcols_w[28*X_TILE+i]=RGB332(MAGENTA);
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==12 && gui_font==1)for(int i=0; i<160; i++)tilefcols_w[58*X_TILE+i]=RGB332(MAGENTA);
}
#else
if(DISPLAY_TYPE==SCREENMODE1 && Option.ColourCode && ytileheight==12 && gui_font==1)for(int i=0; i<80; i++)tilefcols[38*X_TILE+i]=0x9999;
#endif
#endif
CurrentX = 0; CurrentY = VRes - gui_font_height;
break;
}
}
/********************************************************************************************************************************************
THE EDIT COMMAND
********************************************************************************************************************************************/
unsigned char *EdBuff=NULL; // the buffer used for editing the text
int nbrlines; // size of the text held in the buffer (in lines)
int VWidth, VHeight; // editing screen width and height in characters
int edx, edy; // column and row at the top left hand corner of the editing screen (in characters)
int curx, cury; // column and row of the current cursor (in characters) relative to the top left hand corner of the editing screen
unsigned char *txtp; // position of the current cursor in the text being edited
int drawstatusline; // true if the status line needs to be redrawn on the next keystroke
int insert; // true if the editor is in insert text mode
int tempx; // used to track the prefered x position when up/down arrowing
int TextChanged; // true if the program has been modified and therefor a save might be required
#define EDIT 1 // used to select the status line string
#define MARK 2
void FullScreenEditor(int x, int y, char *fname, int edit_buff_size, bool reset);
char *findLine(int ln, int *inmulti);
void printLine(int ln);
void printScreen(void);
void SCursor(int x, int y);
int editInsertChar(unsigned char c, char *multi, int edit_buff_size);
void PrintFunctKeys(int);
void PrintStatus(void);
void SaveToProgMemory(void);
void editDisplayMsg(unsigned char *msg);
void GetInputString(unsigned char *prompt);
void Scroll(void);
void ScrollDown(void);
void MarkMode(unsigned char *cb, unsigned char *buf);
void PositionCursor(unsigned char *curp);
extern void setterminal();
bool modmode=false;
int oldfont;
int oldmode;
#define MAXCLIP 1024
// edit command:
// EDIT Will run the full screen editor on the current program memory, if run after an error will place the cursor on the error line
void edit(unsigned char *cmdline, bool reset) {
unsigned char *fromp, *p=NULL;
int y, x, edit_buff_size ;
char name[FF_MAX_LFN] ;
getargs(&cmdline,1,(unsigned char *)",");
if(reset==false && argc==0)error("Syntax");
optioncolourcodesave=Option.ColourCode;
#ifdef PICOMITEVGA
modmode=false;
editactive=1;
oldmode = DISPLAY_TYPE;
oldfont=PromptFont;
if(HRes<512){
DISPLAY_TYPE=SCREENMODE1;
modmode=true;
}
ResetDisplay();
memset(WriteBuf, 0, ScreenSize);
if(modmode){
#ifdef HDMI
if(Option.CPU_Speed==Freq480P){
#endif
SetFont(1);
PromptFont=1;
#ifdef HDMI
} else {
SetFont(2<<4 | 1);
PromptFont=2<<4 | 1;
}
#endif
}
#ifdef PICOMITEVGA
#ifdef rp2350
#ifdef HDMI
if(DISPLAY_TYPE==SCREENMODE3)for(int i=0;i<16;i++)map16[i]=remap[i]=RGB555(MAP16DEF[i]);
#else
if(DISPLAY_TYPE==SCREENMODE3)for(int i=0;i<16;i++)map16[i]=remap[i]=i;
#endif
#endif
#endif
#endif
if(CurrentLinePtr && reset) error("Invalid in a program");
if(Option.ColourCode) {
gui_fcolour = WHITE;
gui_bcolour = BLACK;
}
if(Option.DISPLAY_CONSOLE == true && gui_font_width > 16*HRes/640) error("Font is too large");
if(Option.DISPLAY_TYPE>=VIRTUAL && WriteBuf)FreeMemorySafe((void **)&WriteBuf);
if(reset){
ClearVars(0);
ClearRuntime();
}
if(HRes==640){
SetFont(1);
PromptFont=1;
}
#ifdef PICOMITEWEB
cleanserver();
#endif
if(reset){
EdBuff = GetTempMemory(EDIT_BUFFER_SIZE);
edit_buff_size=EDIT_BUFFER_SIZE;
} else {
int s=LargestContiguousHeap()-2048*3;
EdBuff = GetTempMemory(s);
edit_buff_size=s;
}
*EdBuff = 0;
VHeight = Option.Height - 2;
VWidth = Option.Width;
edx = edy = curx = cury = y = x = tempx = 0;
txtp = EdBuff;
*tknbuf = 0;
if(argc==0){
fromp = ProgMemory;
p = EdBuff;
nbrlines = 0;
while(*fromp != 0xff) {
if(*fromp == T_NEWLINE) {
if(StartEditPoint >= ProgMemory) {
if(StartEditPoint == fromp) {
y = nbrlines; // we will start editing at this line
tempx = x = StartEditChar;
txtp = p + StartEditChar;
}
} else {
if(StartEditPoint == (unsigned char *)nbrlines) {
y = nbrlines;
tempx = x = StartEditChar;
txtp = p + StartEditChar;
}
}
nbrlines++;
fromp = llist(p, fromp); // otherwise expand the line
if(!(nbrlines==1 && p[0]=='\'' && p[1]=='#')){
p += strlen((char *)p);
*p++ = '\n'; *p = 0;
}
}
// finally, is it the end of the program?
if(fromp[0] == 0 || fromp[0] == 0xff) break;
}
} else {
char *fname = (char *)getFstring(argv[0]);
char c;
int fsize;
strcpy(name,fname);
if(!ExistsFile(name)){
if (strchr(name, '.') == NULL) strcat(name, ".bas");
}
if(!fstrstr(name,".bas"))Option.ColourCode=0;
if(ExistsFile(name)){
int fnbr1;
fnbr1 = FindFreeFileNbr();
BasicFileOpen(name, fnbr1, FA_READ);
if(filesource[fnbr1]!=FLASHFILE) fsize = f_size(FileTable[fnbr1].fptr);
else fsize = lfs_file_size(&lfs,FileTable[fnbr1].lfsptr);
if(fsize > edit_buff_size - 10) error("Out of memory");
p=EdBuff;
do
{ // while waiting for the end of file
c = FileGetChar(fnbr1);
if(c=='\n')nbrlines++;
if(c=='\r')continue;
*p++=c;
} while (!FileEOF(fnbr1));
p++;
FileClose(fnbr1);
}
txtp=EdBuff;
tempx=x=0;
}
if(nbrlines == 0) nbrlines++;
if(p > EdBuff) --p;
*p = 0; // erase the last line terminator
//Only setterminal if editor requires is bigger than 80*24
if (Option.Width > SCREENWIDTH || Option.Height > SCREENHEIGHT){
setterminal((Option.Height > SCREENHEIGHT)?Option.Height:SCREENHEIGHT,(Option.Width > SCREENWIDTH)?Option.Width:SCREENWIDTH); // or height is > 24
}
PrintString("\033[?1000h"); // Tera Term turn on mouse click report in VT200 mode
PrintString("\0337\033[2J\033[H"); // vt100 clear screen and home cursor
MX470Display(DISPLAY_CLS); // clear screen on the MX470 display only
SCursor(0, 0);
PrintFunctKeys(EDIT);
if(nbrlines > VHeight) {
edy = y - VHeight/2; // edy is the line displayed at the top
if(edy < 0) edy = 0; // compensate if we are near the start
y = y - edy; // y is the line on the screen
}
if(reset)m_alloc(M_VAR); //clean up clipboard usage
FullScreenEditor(x,y, argc==1 ? name: NULL, edit_buff_size, reset);
if(reset)memset(tknbuf, 0, STRINGSIZE); // zero this so that nextstmt is pointing to the end of program
MMCharPos = 0;
}
void cmd_edit(void){
edit(cmdline, true);
}
void cmd_editfile(void){
edit(cmdline, FALSE);
}
void FullScreenEditor(int xx, int yy, char *fname, int edit_buff_size, bool reset) {
int c, i;
unsigned char buf[MAXCLIP+2], clipboard[MAXCLIP+2];
unsigned char *p, *tp, BreakKeySave;
static char currdel=0, nextdel=0, lastdel=0, multi=false;
#ifdef PICOMITEVGA
int OptionY_TILESave;
int ytileheightsave;
ytileheightsave=ytileheight;
OptionY_TILESave=Y_TILE;
if(!Option.ColourCode)ytileheight=16;
else {
ytileheight=gui_font_height;
Y_TILE=VRes/ytileheight;
if(VRes % ytileheight)Y_TILE++;
}
#endif
printScreen(); // draw the screen
SCursor(xx, yy);
drawstatusline = true;
unsigned char lastkey = 0;
int y, statuscount;
clipboard[0] = 0;
buf[0]=0;
insert = true;
TextChanged = false;
BreakKeySave = BreakKey;
BreakKey = 0;
while(1) {
statuscount = 0;
do {
ShowCursor(true);
c = MMInkey();
if(statuscount++ == 5000) PrintStatus();
} while(c == -1);
ShowCursor(false);
if(drawstatusline) PrintFunctKeys(EDIT);
drawstatusline = false;
if(c == TAB) {
strcpy((char *)buf, " ");
buf[Option.Tab - ((edx + curx) % Option.Tab)] = 0;
} else {
buf[0] = c;
buf[1] = 0;
}
do {
if(buf[0] == BreakKeySave) buf[0] = ESC; // if the user tried to break turn it into an escape
switch(buf[0]) {
case '\r':
case '\n': // first count the spaces at the beginning of the line
if(txtp != EdBuff && (*txtp == '\n' || *txtp == 0)) { // we only do this if we are at the end of the line
for(tp = txtp - 1, i = 0; *tp != '\n' && tp >= EdBuff; tp--)
if(*tp != ' ')
i = 0; // not a space
else
i++; // potential space at the start
if(tp == EdBuff && *tp == ' ') i++; // correct for a counting error at the start of the buffer
if(buf[1] != 0)
i = 0; // do not insert spaces if buffer too small or has something in it
else
buf[i + 1] = 0; // make sure that the end of the buffer is zeroed
while(i) buf[i--] = ' '; // now, place our spaces in the typeahead buffer
}
if(!editInsertChar('\n',&multi, edit_buff_size)) break; // insert the newline
TextChanged = true;
nbrlines++;
if(!(cury < VHeight - 1)) // if we are NOT at the bottom
edy++; // otherwise scroll
printScreen(); // redraw everything
PositionCursor(txtp);
break;
case CTRLKEY('E'):
case UP: if(cury == 0 && edy == 0) break;
if(*txtp == '\n') txtp--; // step back over the terminator if we are right at the end of the line
while(txtp != EdBuff && *txtp != '\n') txtp--; // move to the beginning of the line
if(txtp != EdBuff) {
txtp--; // step over the terminator to the end of the previous line
while(txtp != EdBuff && *txtp != '\n') txtp--; // move to the beginning of that line
if(*txtp == '\n') txtp++; // and position at the start
}
for(i = 0; i < edx + tempx && *txtp != 0 && *txtp != '\n'; i++, txtp++); // move the cursor to the column
if(cury > 2 || edy == 0) { // if we are more that two lines from the top
if(cury > 0) SCursor(i, cury - 1); // just move the cursor up
}
else if(edy > 0) { // if we are two lines or less from the top
curx = i;
ScrollDown();
}
PositionCursor(txtp);
break;
case CTRLKEY('X'):
case DOWN: p = txtp;
while(*p != 0 && *p != '\n') p++; // move to the end of this line
if(*p == 0) break; // skip if it is at the end of the file
p++; // step over the line terminator to the start of the next line
for(i = 0; i < edx + tempx && *p != 0 && *p != '\n'; i++, p++); // move the cursor to the column
txtp = p;
if(cury < VHeight - 3 || edy + VHeight == nbrlines) {
if(cury < VHeight - 1) SCursor(i, cury + 1);
}
else if(edy + VHeight < nbrlines) {
curx = i;
Scroll();
}
PositionCursor(txtp);
break;
case CTRLKEY('S'):
case LEFT: if(txtp == EdBuff) break;
if(*(txtp - 1) == '\n') { // if at the beginning of the line wrap around
buf[1] = UP;
buf[2] = END;
buf[3] = 1;
buf[4] = 0;
} else {
txtp--;
PositionCursor(txtp);
}
break;
case CTRLKEY('D'):
case RIGHT: if(*txtp == '\n') { // if at the end of the line wrap around
buf[1] = HOME;
buf[2] = DOWN;
buf[3] = 0;
break;
}
if(curx >= VWidth) {
editDisplayMsg((unsigned char *)" LINE IS TOO LONG ");
break;
}
if(*txtp != 0) txtp++; // now we can move the cursor
PositionCursor(txtp);
break;
// backspace
case BKSP: if(txtp == EdBuff) break;
if(*(txtp - 1) == '\n') { // if at the beginning of the line wrap around
buf[1] = UP;
buf[2] = END;
buf[3] = DEL;
buf[4] = 0;
break;
}
// find how many spaces are between the cursor and the start of the line
for(p = txtp - 1; *p == ' ' && p != EdBuff; p--);
if((p == EdBuff || *p == '\n') && txtp - p > 1) {
i = txtp - p - 1;
// we have have the number of continuous spaces between the cursor and the start of the line
// now figure out the number of backspaces to the nearest tab stop
i = (i % Option.Tab); if(i == 0) i = Option.Tab;
// load the corresponding number of deletes in the type ahead buffer
buf[i + 1] = 0;
while(i--) {
buf[i + 1] = DEL;
txtp--;
}
// and let the delete case take care of deleting the characters
PositionCursor(txtp);
break;
}
// this is just a normal backspace (not a tabbed backspace)
txtp--;
PositionCursor(txtp);
// fall through to delete the char
case CTRLKEY(']'):
case DEL: if(*txtp == 0) break;
p = txtp;
c = *p;
currdel=*p;
if(p!=EdBuff+edit_buff_size-1)nextdel=p[1];
else nextdel=0;
if(p!=EdBuff){
lastdel=*(--p);
p++;
} else lastdel=0;
while(*p) {
p[0] = p[1];
p++;
}
if(c == '\n') {
printScreen();
nbrlines--;
}
else
printLine(edy + cury);
TextChanged = true;
PositionCursor(txtp);
if(currdel=='/' && nextdel=='*' && Option.ColourCode)printScreen();
if(currdel=='*' && nextdel=='/' && Option.ColourCode)printScreen();
if(currdel=='/' && lastdel=='*' && Option.ColourCode)printScreen();
if(currdel=='*' && lastdel=='/' && Option.ColourCode)printScreen();
break;
case CTRLKEY('N'):
case INSERT:insert = !insert;
break;
case CTRLKEY('U'):
case HOME: if(txtp == EdBuff) break;
if(lastkey == HOME || lastkey == CTRLKEY('U')) {
edx = edy = curx = cury = 0;
txtp = EdBuff;
PrintString("\033[2J\033[H"); // vt100 clear screen and home cursor
MX470Display(DISPLAY_CLS); // clear screen on the MX470 display only
printScreen();
PrintFunctKeys(EDIT);
PositionCursor(txtp);
break;
}
if(*txtp == '\n') txtp--; // step back over the terminator if we are right at the end of the line
while(txtp != EdBuff && *txtp != '\n') txtp--; // move to the beginning of the line
if(*txtp == '\n') txtp++; // skip if no more lines above this one
PositionCursor(txtp);
break;
case CTRLKEY('K'):
case END: if(*txtp == 0) break; // already at the end
if(lastkey == END || lastkey == CTRLKEY('K')) { // jump to the end of the file
i = 0; p = txtp = EdBuff;
while(*txtp != 0) {
if(*txtp == '\n') { p = txtp + 1; i++; }
txtp++;
}
if(i >= VHeight) {
edy = i - VHeight + 1;
printScreen();
cury = VHeight - 1;
} else {
cury = i;
}
txtp = p;
curx = 0;
}
while(curx < VWidth && *txtp != 0 && *txtp != '\n') {
txtp++;
PositionCursor(txtp);
}
if(curx > VWidth) editDisplayMsg((unsigned char *)" LINE IS TOO LONG ");
break;
case CTRLKEY('P'):
case PUP: if(edy == 0) { // if we are already showing the top of the text
buf[1] = HOME; // force the editing point to the start of the text
buf[2] = HOME;
buf[3] = 0;
break;
} else if(edy >= VHeight - 1) { // if we can scroll a full screenfull
i = VHeight + 1;
edy -= VHeight;
} else { // if it is less than a full screenfull
i = edy + 1;
edy = 0;
}
while(i--) {
if(*txtp == '\n') txtp--; // step back over the terminator if we are right at the end of the line
while(txtp != EdBuff && *txtp != '\n') txtp--; // move to the beginning of the line
if(txtp == EdBuff) break; // skip if no more lines above this one
}
if(txtp != EdBuff) txtp++; // and position at the start of the line
for(i = 0; i < edx + curx && *txtp != 0 && *txtp != '\n'; i++, txtp++); // move the cursor to the column
printScreen();
PositionCursor(txtp);
break;
case CTRLKEY('L'):
case PDOWN: if(nbrlines <= edy + VHeight + 1) { // if we are already showing the end of the text
buf[1] = END; // force the editing point to the end of the text
buf[2] = END;
buf[3] = 0;
break; // cursor to the top line
} else if(nbrlines - edy - VHeight >= VHeight) { // if we can scroll a full screenfull
edy += VHeight;
i = VHeight;
} else { // if it is less than a full screenfull
i = nbrlines - VHeight - edy;
edy = nbrlines - VHeight;
}
if(*txtp == '\n') i--; // compensate if we are right at the end of a line
while(i--) {
if(*txtp == '\n') txtp++; // step over the terminator if we are right at the start of the line
while(*txtp != 0 && *txtp != '\n') txtp++; // move to the end of the line
if(*txtp == 0) break; // skip if no more lines after this one
}
if(txtp != EdBuff) txtp++; // and position at the start of the line
for(i = 0; i < edx + curx && *txtp != 0 && *txtp != '\n'; i++, txtp++); // move the cursor to the column
//y = cury;
printScreen();
PositionCursor(txtp);
break;
// Abort without saving
case ESC: uSec(50000); // wait 50ms to see if anything more is coming
routinechecks();
if(MMInkey() == '[' && MMInkey() == 'M') {
// received escape code for Tera Term reporting a mouse click or scroll wheel movement
int c, x, y;
c = MMInkey(); x = MMInkey() - '!'; y = MMInkey() - '!';
if(c == 'e' || c == 'a') { // Tera Term - SHIFT + mouse-wheel-rotate-down
buf[1] = UP;
buf[2] = 0;
} else if(c == 'd' || c == '`') { // Tera Term - SHIFT + mouse-wheel-rotate-up
buf[1] = DOWN;
buf[2] = 0;
} else if(c == ' ' && x >= 0 && x < VWidth && y >= 0 && y < VHeight) { // c == ' ' means mouse down and no shift, ctrl, etc
// first position on the y axis
while(*txtp != 0 && y > cury) // assume we have to move down the screen
if(*txtp++ == '\n') cury++;
while(txtp != EdBuff && y < cury) // assume we have to move up the screen
if(*--txtp == '\n') cury--;
while(txtp != EdBuff && *(txtp - 1) != '\n') txtp--; // move to the beginning of the line
for(curx = 0; curx < x && *txtp && *txtp != '\n'; curx++) txtp++; // now position on the x axis
PositionCursor(txtp);
}
break;
}
// this must be an ordinary escape (not part of an escape code)
if(TextChanged) {
GetInputString((unsigned char *)"Exit and discard all changes (Y/N): ");
if(toupper(*inpbuf) != 'Y') break;
}
// fall through to the normal exit
case CTRLKEY('Q'): // Save and exit
case F1: // Save and exit
case CTRLKEY('W'): // Save, exit and run
case F2: // Save, exit and run
c=buf[0];
PrintString("\033[?1000l"); // Tera Term turn off mouse click report in vt200 mode
PrintString("\0338\033[2J\033[H"); // vt100 clear screen and home cursor
gui_fcolour = GUI_C_NORMAL;
PrintString(VT100_C_NORMAL);
gui_fcolour = PromptFC;
gui_bcolour = PromptBC;
MX470Cursor(0, 0); // home the cursor
MX470Display(DISPLAY_CLS); // clear screen on the MX470 display only
PrintString("\033[0m");
BreakKey = BreakKeySave;
Option.ColourCode=optioncolourcodesave;
#ifdef PICOMITEVGA
editactive=0;
Y_TILE=OptionY_TILESave;
ytileheight=ytileheightsave;
if(modmode){
DISPLAY_TYPE=oldmode;
ResetDisplay();
SetFont(oldfont);
PromptFont=oldfont;
}
#ifdef HDMI
if(Option.CPU_Speed==Freq480P){
tilefcols=(uint16_t *)((uint32_t)FRAMEBUFFER+(MODE1SIZE*3));
tilebcols=(uint16_t *)((uint32_t)FRAMEBUFFER+(MODE1SIZE*3)+(MODE1SIZE>>1));
X_TILE=MODE_H_ACTIVE_PIXELS/8;Y_TILE=MODE_V_ACTIVE_LINES/8;
for(int x=0;x<X_TILE;x++){
for(int y=0;y<Y_TILE;y++){
tilefcols[y*X_TILE+x]=RGB555(Option.DefaultFC);
tilebcols[y*X_TILE+x]=RGB555(Option.DefaultBC);
}
}
} else {
tilefcols_w=(uint8_t *)DisplayBuf+MODE1SIZE;
tilebcols_w=tilefcols_w+(MODE_H_ACTIVE_PIXELS/8)*(MODE_V_ACTIVE_LINES/8); //minimum tilesize is 8x8
memset(tilefcols_w,RGB332(Option.DefaultFC),(MODE_H_ACTIVE_PIXELS/8)*(MODE_V_ACTIVE_LINES/8)*sizeof(uint8_t));
memset(tilebcols_w,RGB332(Option.DefaultBC),(MODE_H_ACTIVE_PIXELS/8)*(MODE_V_ACTIVE_LINES/8)*sizeof(uint8_t));
X_TILE=MODE_H_ACTIVE_PIXELS/8;Y_TILE=MODE_V_ACTIVE_LINES/ytileheight;
}
#endif
#endif
if(c != ESC && TextChanged && fname==NULL) SaveToProgMemory();
if(c != ESC && TextChanged && fname) {
int fnbr1;
if(ExistsFile(fname)){
char backup[FF_MAX_LFN];
strcpy(backup,fname);
strcat(backup,".bak");
fnbr1 = FindFreeFileNbr();
BasicFileOpen(fname, fnbr1, FA_READ);
int fnbr2 = FindFreeFileNbr();
BasicFileOpen(backup, fnbr2, FA_WRITE | FA_CREATE_ALWAYS);
while (!FileEOF(fnbr1))
{ // while waiting for the end of file
FilePutChar(FileGetChar(fnbr1),fnbr2);
}
FileClose(fnbr1);
FileClose(fnbr2);
}
fnbr1=FindFreeFileNbr();
BasicFileOpen(fname, fnbr1, FA_WRITE | FA_CREATE_ALWAYS);
p=EdBuff;
do
{ // while waiting for the end of file
c = *p++;
if(c=='\n')FilePutChar('\r',fnbr1);
FilePutChar(c,fnbr1);
} while (*p);
FileClose(fnbr1);
}
if(reset==false)return;
if(c == ESC || c == CTRLKEY('Q') || c == F1 || fname) cmd_end();
// this must be save, exit and run. We have done the first two, now do the run part.
ClearRuntime();
// WatchdogSet = false;
PrepareProgram(true);
// Create a global constant MM.CMDLINE$ containing the empty string.
(void) findvar((unsigned char *)"MM.CMDLINE$", V_FIND | V_DIM_VAR | T_CONST);
if(Option.LIBRARY_FLASH_SIZE == MAX_PROG_SIZE) ExecuteProgram(LibMemory ); // run anything that might be in the library
if(*ProgMemory != T_NEWLINE) return; // no program to run
#ifdef PICOMITEWEB
cleanserver();
#endif
nextstmt = ProgMemory;
#ifdef USBKEYBOARD
clearrepeat();
#endif
return;
// Search
case CTRLKEY('R'):
case F3: GetInputString((unsigned char *)"Find (Use SHIFT-F3 to repeat): ");
if(*inpbuf == 0 || *inpbuf == ESC) break;
if(!(*inpbuf == 0xb3 || *inpbuf == F3)) strcpy((char *)tknbuf, (char *)inpbuf);
// fall through
case CTRLKEY('G'):
case 0xB3: // SHIFT-F3
p = txtp;
if(*p == 0) p = EdBuff - 1;
i = strlen((char *)tknbuf);
while(1) {
p++;
if(p == txtp) break;
if(*p == 0) p = EdBuff;
if(p == txtp) break;
if(mem_equal(p, tknbuf, i)) break;
}
if(p == txtp) {
editDisplayMsg((unsigned char *)" NOT FOUND ");
break;
}
for(y = 0, txtp = EdBuff; txtp != p; txtp++) { // find the line and column of the string
if(*txtp == '\n') {
y++; // y is the line
}
}
edy = y - VHeight/2; // edy is the line displayed at the top
if(edy < 0) edy = 0; // compensate if we are near the start
printScreen();
PositionCursor(txtp);
// SCursor(x, y);
break;
// Mark
case CTRLKEY('T'):
case F4: MarkMode(clipboard, &buf[1]);
printScreen();
PrintFunctKeys(EDIT);
PositionCursor(txtp);
break;
case CTRLKEY('Y'):
case CTRLKEY('V'):
case F5: if(*clipboard == 0) {
editDisplayMsg((unsigned char *)" CLIPBOARD IS EMPTY ");
break;
}
for(i = 0; clipboard[i]; i++) buf[i + 1] = clipboard[i];
buf[i + 1] = 0;
break;
// F6 to F12 - Normal function keys
case F6:
case F7:
case F8:
case F9:
case F10:
case F11:
case F12:
break;
// a normal character
default: c = buf[0];
if(c < ' ' || c > '~') break; // make sure that this is valid
if(curx >= VWidth) {
editDisplayMsg((unsigned char *)" LINE IS TOO LONG ");
break;
}
TextChanged = true;
if(insert || *txtp == '\n' || *txtp == 0) {
if(!editInsertChar(c, &multi, edit_buff_size)) break; // insert it
} else
*txtp++ = c; // or just overtype
printLine(edy + cury); // redraw the whole line so that colour coding will occur
PositionCursor(txtp);
// SCursor(x, cury);
tempx = cury; // used to track the preferred cursor position
if(multi && Option.ColourCode)printScreen();
break;
}
lastkey = buf[0];
if(buf[0] != UP && buf[0] != DOWN && buf[0] != CTRLKEY('E') && buf[0] != CTRLKEY('X')) tempx = curx;
buf[MAXCLIP + 1] = 0;
for(i = 0; i < MAXCLIP + 1; i++) buf[i] = buf[i + 1]; // suffle down the buffer to get the next char
} while(*buf);
}
}
/*******************************************************************************************************************
UTILITY FUNCTIONS USED BY THE FULL SCREEN EDITOR
*******************************************************************************************************************/
void PositionCursor(unsigned char *curp) {
int ln, col;
unsigned char *p;
for(p = EdBuff, ln = col = 0; p < curp; p++) {
if(*p == '\n') {
ln++;
col = 0;
} else
col++;
}
if(ln < edy || ln >= edy + VHeight) return;
SCursor(col, ln - edy);
}
// mark mode
// implement the mark mode (when the user presses F4)