From 6bad8fa605f5011cadab428156c18b4067922185 Mon Sep 17 00:00:00 2001
From: mrb0nk500 <b0nk@b0nk.xyz>
Date: Tue, 24 Mar 2020 18:46:44 -0400
Subject: Added support in SuBEditor for true backspace, and inserting
 characters without replacing the old ones.

---
 programs/c-ports/subeditor.c | 38 ++++++++++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 8 deletions(-)

(limited to 'programs/c-ports/subeditor.c')

diff --git a/programs/c-ports/subeditor.c b/programs/c-ports/subeditor.c
index 313c49a..76ee544 100644
--- a/programs/c-ports/subeditor.c
+++ b/programs/c-ports/subeditor.c
@@ -1,4 +1,3 @@
-#include <curses.h>
 #include "subeditor.h"
 #define clr_bitabl() {\
 	bitabl[0x00] = 0;\
@@ -45,6 +44,7 @@ uint8_t scr_col = 0;
 uint8_t scr_trow = 0;
 uint8_t scr_tcol = 0;
 uint16_t scr_ptr = 0;
+uint16_t scr_ptr2 = 0;
 
 uint8_t byte = 0;
 uint8_t mask = 0;
@@ -202,7 +202,7 @@ void bitpos(uint8_t row) {
 	mask = bits[bit];
 	byte = bitmask >> 3;
 	#if debug
-		mvwprintw(scr, 2, 0, "bit: $%02X, row: $%02X, byte: $%02X, mask: $%02X, bitmask: $%02X\r", bit, row, byte, mask, bitmask);
+		/*mvwprintw(scr, 2, 0, "bit: $%02X, row: $%02X, byte: $%02X, mask: $%02X, bitmask: $%02X\r", bit, row, byte, mask, bitmask);*/
 	#endif
 }
 
@@ -240,11 +240,28 @@ void findst() {
 	}
 }
 
+void shftln(uint16_t src, uint16_t dst, uint8_t flag) {
+	if (!flag) {
+		while (buffer[src] != '\0') {
+			buffer[dst++] = buffer[src];
+			buffer[src++] = '\0';
+		}
+	} else {
+		while (scr_ptr <= src) {
+			mvwprintw(scr, 2, 0, "buffer[0x%04X]: $%02X, buffer[0x%04X]: $%02X, src: $%04X, dst: $%04X, scr_ptr: $%04X\r", src, buffer[src], dst, buffer[dst], src, dst, scr_ptr);
+			wrefresh(scr);
+			buffer[dst--] = buffer[src];
+			buffer[src--] = '\0';
+		}
+	}
+}
+
 void print_char(char ch) {
 	uint8_t is_wrap = 0;
 	uint8_t is_scroll = 0;
 	uint8_t is_esc = 0;
 	uint8_t done = 0;
+	uint16_t i = 0;
 	a = ch;
 	switch (ch) {
 		case 0x1B:
@@ -286,11 +303,9 @@ void print_char(char ch) {
 						++scr_row;
 						if (getbit()) {
 							scr_col = 0;
-							if (scr_row >= 23) {
-								if (scr_str) {
-									wrapped = 1;
-									scrl_down();
-								}
+							if (scr_row > 23) {
+								wrapped = 1;
+								scrl_down();
 								is_wrap = 0;
 								done = 1;
 							} else {
@@ -405,11 +420,18 @@ void print_char(char ch) {
 			scr_col--;
 			update_pos();
 			buffer[scr_ptr] = 0;
+			shftln(scr_ptr+1, scr_ptr, 0);
 			#if !debug
 				wdelch(scr);
 			#endif
 			break;
 		default:
+			if (buffer[scr_ptr] != '\0') {
+				for (i = scr_ptr; buffer[i] != '\0'; i++);
+				scr_ptr2 = scr_ptr-1;
+				shftln(i-1, i, 1);
+				i = 0;
+			}
 			a = ch;
 			buffer[scr_ptr] = ch;
 			scr_col++;
@@ -557,7 +579,7 @@ int main() {
 			continue;
 		}
 		if (!getkey(ch)) {
-			if (dabbed()) {
+			if (subasm()) {
 				print_str(string2);
 				print_str(cmd_buf);
 				print_char('\n');
-- 
cgit v1.2.3-13-gbd6f