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te.c
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te.c
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/* te.c
Text editor.
Main module.
Copyright (c) 2015-2021 Miguel Garcia / FloppySoftware
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
Notes:
Change TE_VERSION in 'te.h' as required, before compilation.
Changes:
29 Apr 2015 : Start working.
02 May 2015 : Added Amstrad PCW version (te_pcw.c).
03 May 2015 : Added K. Murakami's CP/M emulator for Win32 version (te_em1.c).
04 May 2015 : Added te.h file. Added forced entry. Nice ruler with tab stops.
07 May 2015 : While porting it to Pelles C & Windows 32 bit, it was discovered
collateral efects in 3 pieces of code. Recoded and marked below.
Solved bug in ReadFile() - characters > 0x7F caused 'bad
character' errors.
Added checking for filenames too long in command line.
08 May 2015 : v1.00 : Added BackupFile().
12 May 2015 : v1.01 : Now K_CUT copies the line to the clipboard before deleting it.
14 May 2015 : v1.02 : Added support for word left & word right cursor movement.
You must define K_LWORD and K_RWORD in your CRT_FILE
to activate them.
15 May 2015 : v1.03 : Modified getch & putch to getchr & putchr.
31 Aug 2015 : v1.04 : Minor changes in comments and ReadLine().
02 Jun 2016 : v1.05 : Minor changes.
10 Jun 2016 : v1.06 : Screen optimizations in Menu(). Removed BOX_COL.
Removed lp_max, box_cols, ps_fname, ps_lin_cur, ps_lin_now, ps_lin_max,
ps_col_cur, ps_col_now, ps_col_max.
14 Jun 2016 : v1.07 : Hack for SamaruX.
05 Jul 2017 : v1.08 : Optimizations in NULL comparisons. Include CC_FGETS.
24 Jan 2018 : v1.09 : Added find string and find next string commands.
20 Feb 2018 : v1.10 : Added command to execute macro from file. Split te.c in modules. Added go to line #.
Disable code for macros from strings, for now.
22 Feb 2018 : v1.11 : Ask for confirmation only if changes were not saved.
06 Jan 2019 : Included te_lines module and modified related functions. Added LoopCut(), LoopPaste().
13 Jan 2019 : Included te_misc module. Minor changes.
15 Jan 2019 : Added LoopBlkStart(), LoopBlkEnd(), LoopBlkUnset(), LoopCopy().
18 Jan 2019 : Added K_DELETE, LoopDelete().
19 Jan 2019 : Added LoopUp(), LoopDown().
22 Jan 2019 : Added te_keys module. Added support for key bindings.
27 Jan 2019 : Added support for macros.
29 Jan 2019 : Added K_CLRCLP. Show clipboard status.
30 Jan 2019 : Removed support for SamaruX.
14 Feb 2019 : Added help items layout.
24 Dec 2019 : Added support for line numbers.
26 Dec 2019 : Now K_INTRO is K_CR, LoopIntro() is LoopCr().
01 Mar 2020 : Added fe_forced.
02 Mar 2020 : Added automatic indentation.
08 Mar 2020 : Support for CRT_LONG.
22 Dec 2020 : Add default filetype to macro filenames.
30 Dec 2020 : Solved bug in LoopCr() - bad column position after line break.
Solved bug in LoopDelete() - did nothing if no selection, must delete current line.
Added LoopBlkEx(), LoopDeleteEx().
Added automatic list.
04 Jan 2021 : Use configuration variables.
22 Feb 2021 : Removed CRT_ROWS, CRT_COLS.
04 Apr 2021 : Move key bindings to configuration. Remove customized key names.
30 Jun 2021 : Get CP/M version. Adjust auto rows and columns configuration values.
01 Jul 2021 : Check if macro is running to avoid auto-indentation and lists side effects.
06 Jul 2021 : Optimize LoopCr(), LoopLeftDel(), LoopRightDel() a bit.
25 Sep 2021 : Add editln variable. Use SysLineEdit() when editing.
01 Nov 2021 : Added macro raw mode.
18 Nov 2021 : Added mac_indent, mac_list for AutoIndent, AutoList macros.
20 Nov 2021 : Added mac_sym for macros.
Notes:
See FIX-ME notes.
*/
/* Libraries
---------
*/
#define CC_FGETS
#define CC_FPUTS
#include <mescc.h>
#include <string.h>
#include <ctype.h>
#include <fileio.h>
#include <sprintf.h>
/* TE definitions
--------------
*/
#include "te.h"
#include "te_keys.h"
/* Operating system
----------------
*/
int cpm_ver; /* CP/M version */
/* Array of text lines
-------------------
*/
WORD *lp_arr; /* Text lines pointers array */
int lp_now; /* How many lines are in the array */
int lp_cur; /* Current line */
int lp_chg; /* 0 if no changes are made */
/* Current line
------------
*/
char *ln_dat; /* Data buffer */
int ln_max; /* Max. # of characters */
/* Clipboard & block selection
---------------------------
*/
#if OPT_BLOCK
int blk_start; /* Start line # */
int blk_end; /* End line # */
int blk_count; /* # of lines */
WORD *clp_arr; /* Multi-line */
int clp_count; /* # of lines */
#else
char *clp_line; /* Just one line */
#endif
/* Filename
--------
*/
char file_name[FILENAME_MAX];
/* Editor box
----------
*/
int box_rows; /* Height in lines */
int box_shr; /* Vertical position of cursor in the box (0..box_rows - 1) */
int box_shc; /* Horizontal position of cursor in the box (0..cf_cols - 1) */
/* Keyboard forced entry
---------------------
*/
int *fe_dat; /* Data buffer */
int fe_now; /* How many characters are now in the buffer */
int fe_set; /* Set position */
int fe_get; /* Get position */
int fe_forced; /* Flag: true if forced character on input */
/* System line
-----------
*/
int sysln; /* NZ when written - for Loop() */
/* Edit line
---------
*/
int editln; /* NZ when editing line - for ErrLine() */
#if OPT_FIND
/* Find string
-----------
*/
char find_str[FIND_MAX];
#endif
#if OPT_MACRO
/* Macros
------
*/
FILE *mac_fp; /* FP for a file macro, or NULL */
/*char *mac_str;*/ /* Address for a string macro, or NULL */
int mac_raw; /* NZ for raw mode */
unsigned char mac_indent; /* Value of cf_indent */
unsigned char mac_list; /* Value of cf_list */
char mac_sym[MAC_SYM_SIZ]; /* Macro symbol */
#endif
/* Help items layout
-----------------
*/
int help_items[] = {
K_UP, K_DOWN, K_TAB,
K_LEFT, K_RIGHT, K_CR,
K_BEGIN, K_END, K_ESC,
K_TOP, K_BOTTOM, K_MACRO,
K_PGUP, K_PGDOWN, 0,
K_LWORD, K_RWORD, 0,
K_LDEL, K_RDEL, 0,
K_BLK_START, K_BLK_END, K_BLK_UNSET,
K_CUT, K_COPY, K_PASTE,
K_DELETE, K_CLRCLP, 0,
K_FIND, K_NEXT, K_GOTO,
-1
};
/* TE modules
----------
*/
#include "te_conf.c"
#include "te_ui.c"
#include "te_file.c"
#include "te_keys.c"
#include "te_edit.c"
#include "te_lines.c"
#include "te_misc.c"
#include "te_error.c"
#if OPT_MACRO
#include "te_macro.c"
#endif
/* Program entry
-------------
*/
main(argc, argv)
int argc, argv[];
{
int i;
/* Get CP/M version */
cpm_ver = bdos_a(0x0C, 0x0000);
/* Adjust auto rows and columns configuration values */
cf_rows = GetScrConf(0, cf_rows, CRT_DEF_ROWS);
cf_cols = GetScrConf(1, cf_cols, CRT_DEF_COLS);
/* Setup CRT */
CrtSetup();
/* Setup some globals */
#if CRT_LONG
box_rows = cf_rows - 4;
#else
box_rows = cf_rows - 2;
#endif
/* Max. width of lines */
ln_max = cf_cols - cf_num - 1;
/* Print layout */
Layout();
/* Allocate buffers -- FIXME -- use AllocMem() ?? */
ln_dat = malloc(ln_max + 2);
fe_dat = malloc(FORCED_MAX * SIZEOF_INT);
lp_arr = malloc(cf_mx_lines * SIZEOF_PTR);
i = 1;
if(ln_dat && fe_dat && lp_arr) {
#if OPT_BLOCK
#else
if((clp_line = malloc(ln_max + 1))) {
#endif
i = 0;
#if OPT_BLOCK
#else
}
#endif
}
if(i)
{
ErrLineMem(); CrtReset(); return 1;
}
/* Setup clipboard */
#if OPT_BLOCK
clp_arr = NULL;
clp_count = 0;
#else
*clp_line = '\0';
#endif
/* Setup lines */
for(i = 0; i < cf_mx_lines; ++i) {
lp_arr[i] = NULL;
}
/* Check command line */
if(argc == 1)
{
NewFile();
}
else if(argc == 2)
{
if(strlen(argv[1]) > FILENAME_MAX - 1)
{
ErrLine("Filename too long");
NewFile();
}
else if(ReadFile(argv[1]))
NewFile();
else
strcpy(file_name, argv[1]);
}
else
{
ErrLine("Bad command line. Use: te [filename]");
NewFile();
}
/* Main loop */
Loop();
/* Clear & reset CRT */
CrtClear();
CrtReset();
/* Exit */
return 0;
}
/* Get # of rows / columns on auto configuration value
---------------------------------------------------
*/
GetScrConf(n, val, def_val)
int n, val, def_val;
{
unsigned char scb_pb[2];
if(val == 0) {
val = def_val;
if(cpm_ver >= 0x30) {
scb_pb[0] = (n == 0 ? 0x1C : 0x1A);
scb_pb[1] = 0;
val = bdos_a(0x31, scb_pb) + 1;
}
}
return val;
}
/* Main loop
---------
*/
Loop()
{
int run, ch;
/* Setup forced entry */
fe_now = fe_get = fe_set = 0;
/* Setup more things */
run = sysln = 1;
/* Print filename */
ShowFilename();
/* Refresh editor box */
RefreshAll();
/* Loop */
while(run)
{
/* Refresh system line message if it changed */
if(sysln)
{
SysLineEdit();
sysln = 0;
}
/* Print clipboard status */
CrtLocate(PS_ROW, PS_CLP);
#if OPT_BLOCK
putstr(clp_count ? "CLP" : "---");
#else
putstr(*clp_line ? "CLP" : "---");
#endif
/* Print current line number, etc. */
CrtLocate(PS_ROW, PS_LIN_CUR); putint("%04d", lp_cur + 1);
CrtLocate(PS_ROW, PS_LIN_NOW); putint("%04d", lp_now);
/* Edit the line */
ch = BfEdit();
/* Note: BfEdit() does previous checks for following
actions, to not waste time when an action is not
possible */
/* Check returned control character */
switch(ch)
{
case K_UP : /* Up one line --------------------- */
LoopUp();
break;
case K_DOWN : /* Down one line ------------------- */
LoopDown();
break;
case K_CR : /* Insert CR ----------------------- */
LoopCr();
break;
case K_LDEL : /* Delete CR on the left ----------- */
LoopLeftDel();
break;
case K_RDEL : /* Delete CR on the right ---------- */
LoopRightDel();
break;
case K_PGUP : /* Page up ------------------------- */
LoopPgUp();
break;
case K_PGDOWN :/* Page down ----------------------- */
LoopPgDown();
break;
case K_TOP : /* Top of document ----------------- */
LoopTop();
break;
case K_BOTTOM :/* Bottom of document -------------- */
LoopBottom();
break;
case K_COPY : /* Copy line or block ------------- */
LoopCopy();
break;
case K_CUT : /* Copy and delete line or block -- */
LoopCut();
break;
case K_PASTE : /* Paste line or block ------------ */
LoopPaste();
break;
case K_DELETE : /* Delete line or block ----------- */
LoopDelete();
break;
case K_CLRCLP : /* Clear the clipboard ------------ */
LoopClrClp();
break;
#if OPT_BLOCK
case K_BLK_START : /* Set block start ------------- */
LoopBlkStart();
break;
case K_BLK_END : /* Set block end --------------- */
LoopBlkEnd();
break;
case K_BLK_UNSET : /* Unset block ----------------- */
LoopBlkUnset();
break;
#endif
#if OPT_FIND
case K_FIND : /* Find string --------------------- */
LoopFindFirst();
break;
case K_NEXT : /* Find next string ---------------- */
LoopFindNext();
break;
#endif
#if OPT_GOTO
case K_GOTO : /* Go to line # -------------------- */
LoopGoLine();
break;
#endif
#if OPT_MACRO
case K_MACRO : /* Execute macro from file --------- */
LoopMacro();
break;
#endif
case K_ESC : /* Show the menu ------------------- */
if(Menu()) {
run = 0;
}
else {
ShowFilename(); /* Refresh filename */
RefreshAll(); /* Refresh editor box */
}
break;
}
}
}
/* Go one line up
--------------
*/
LoopUp()
{
--lp_cur; // FIXME -- check if we are on the 1st line?
if(box_shr)
--box_shr;
else
Refresh(0, lp_cur);
}
/* Go one line down
----------------
*/
LoopDown()
{
++lp_cur; // FIXME -- check if we are on the last line?
if(box_shr < box_rows - 1)
++box_shr;
else
Refresh(0, lp_cur - box_rows + 1);
}
/* Go to document top
------------------
*/
LoopTop()
{
int first;
first = GetFirstLine();
lp_cur = box_shr = box_shc = 0;
if(first > 0) {
RefreshAll();
}
}
/* Go to document bottom
---------------------
*/
LoopBottom()
{
int first, last;
first = GetFirstLine();
last = GetLastLine();
lp_cur = lp_now - 1;
box_shc = 999;
if(last < lp_now - 1) {
box_shr = box_rows - 1;
RefreshAll();
}
else {
box_shr = last - first;
}
}
/* Page up
-------
*/
LoopPgUp()
{
int first, to;
first = GetFirstLine();
if(first)
{
if((to = first - box_rows) < 0) /* max(to, 0) */
to = 0;
lp_cur = to; box_shr = box_shc = 0;
RefreshAll();
}
else
LoopTop();
}
/* Page down
---------
*/
LoopPgDown()
{
int to;
if(GetLastLine() < lp_now - 1)
{
to = GetFirstLine() + box_rows;
if(to >= lp_now)
to = lp_now - 1;
lp_cur = to; box_shr = box_shc = 0;
RefreshAll();
}
else
LoopBottom();
}
/* Insert CR
---------
*/
LoopCr()
{
int ok;
int i, k;
if(box_shc) {
if(ln_dat[box_shc]) {
/* Cursor is in the middle of the line */
if((ok = SplitLine(lp_cur, box_shc))) {
CrtClearEol();
}
}
else {
/* Cursor is at the end of the line */
ok = AppendLine(lp_cur, NULL);
}
}
else {
/* Cursor is in first column */
if((ok = InsertLine(lp_cur, NULL))) {
if(ln_dat[0]) {
/* Line is not empty */
CrtClearEol();
}
/* else { */
/* Line is empty */
/* } */
}
}
if(ok) {
++lp_cur;
k = 0;
if(box_shc) {
i = 0;
if(cf_indent) {
while(ln_dat[i] == ' ') {
++i;
}
}
if(cf_list) {
if(strchr(cf_list_chr, ln_dat[i]) && ln_dat[i + 1] == ' ') {
i += 2;
}
}
if(i) {
k = i;
strcpy(ln_dat + i, lp_arr[lp_cur]);
ModifyLine(lp_cur, ln_dat);
}
}
if(box_shr < box_rows - 1) {
++box_shr;
Refresh(box_shr, lp_cur);
}
else {
Refresh(0, lp_cur - box_rows + 1);
}
box_shc = k;
lp_chg = 1;
}
}
#if OPT_BLOCK
/* Set block start
---------------
*/
LoopBlkStart()
{
if(blk_start != -1 || (blk_end != -1 && lp_cur > blk_end)) {
LoopBlkUnset();
}
blk_start = lp_cur;
if(blk_end != -1) {
RefreshBlock(box_shr, 1);
blk_count = blk_end - blk_start + 1;
}
}
/* Set block end
-------------
*/
LoopBlkEnd()
{
if(blk_end != -1 || (blk_start != -1 && lp_cur < blk_start) ) {
LoopBlkUnset();
}
blk_end = lp_cur;
if(blk_start != -1) {
RefreshBlock(0, 1); // FIXME -- optimize
blk_count = blk_end - blk_start + 1;
}
}
/* Unset block
-----------
*/
LoopBlkUnset()
{
if(blk_count) {
if(blk_start <= GetLastLine() && blk_end >= GetFirstLine()) {
RefreshBlock(0, 0); // FIXME -- optimize
}
}
blk_start = blk_end = -1;
blk_count = 0;
}
LoopBlkEx()
{
if(!blk_count) {
blk_start = blk_end = lp_cur;
blk_count = 1;
}
}
#endif
/* Copy line
---------
*/
LoopCopy()
{
#if OPT_BLOCK
LoopBlkEx();
if(LoopCopyEx()) {
LoopBlkUnset();
}
#else
strcpy(clp_line, ln_dat);
#endif
}
#if OPT_BLOCK
LoopCopyEx()
{
int i;
LoopClrClp();
if((clp_arr = AllocMem(blk_count * SIZEOF_PTR))) {
for(i = 0; i < blk_count; ++i) {
if((clp_arr[i] = AllocMem(strlen(lp_arr[blk_start + i]) + 1))) {
strcpy(clp_arr[i], lp_arr[blk_start + i]);
}
else {
FreeArray(clp_arr, i, 1);
return 0;
}
}
clp_count = blk_count;
return 1;
}
return 0;
}
#endif
/* Delete line
-----------
*/
LoopDelete()
{
#if OPT_BLOCK
LoopBlkEx();
LoopDeleteEx();
#else
if(lp_cur != lp_now - 1) {
DeleteLine(lp_cur);
}
else {
ClearLine(lp_cur);
}
Refresh(box_shr, lp_cur);
box_shc = 0;
lp_chg = 1;
#endif
}
#if OPT_BLOCK
LoopDeleteEx()
{
//if(blk_count) {
LoopGo(blk_start);
while(blk_count--) {
if(blk_start != lp_now - 1) {
DeleteLine(blk_start);
}
else {
ClearLine(blk_start);
}
--blk_end;
Refresh(box_shr, lp_cur);
}
blk_start = blk_end = -1;
blk_count = 0;
box_shc = 0;
lp_chg = 1;
//}
}
#endif
/* Copy and delete line
--------------------
*/
LoopCut()
{
#if OPT_BLOCK
LoopBlkEx();
if(LoopCopyEx()) {
LoopDeleteEx();
}
#else
strcpy(clp_line, ln_dat);
LoopDelete();
#endif
}
/* Paste line
----------
*/
LoopPaste()
{
#if OPT_BLOCK
int i;
if(clp_count) {
for(i = 0; i < clp_count; ++i) {
if(InsertLine(lp_cur, clp_arr[i])) {
Refresh(box_shr, lp_cur);
LoopDown();
}
else {
break;
}
}
box_shc = 0;
lp_chg = 1;
}
#else
if((InsertLine(lp_cur, clp_line))) {
Refresh(box_shr, lp_cur);
LoopDown();
box_shc = 0;
lp_chg = 1;
}
#endif
}
/* Clear the clipboard
-------------------
*/
LoopClrClp()
{
#if OPT_BLOCK
if(clp_count) {
FreeArray(clp_arr, clp_count, 1);
clp_count = 0;
}
#else
*clp_line = '\0';
#endif
}
/* Delete CR on the left
---------------------
*/
LoopLeftDel()
{
char *p;
int ok, rs, pos;
if(ln_dat[0]) {
/* Line is not empty */
p = lp_arr[lp_cur - 1];
if(*p) {
/* Previous line is not empty */
pos = strlen(p);
if((ok = JoinLines(lp_cur - 1))) {
rs = 0;
}
}
else {
/* Previous line is empty */
if((ok = DeleteLine(lp_cur - 1))) {