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Implemented Escape Sequences!!!!

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This commit is contained in:
Tom-on
2024-05-28 20:42:03 +02:00
parent 74c38342d7
commit 7a2afbd653
8 changed files with 126 additions and 27 deletions
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include/terminal/terminal.h
+85 -5
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@@ -3,8 +3,10 @@
#include <screen/gfxmode.h>
#include <memory/addresses.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include <color.h>
typedef struct {
uint32_t x; // X Position of cursor in characters
@@ -31,24 +33,95 @@ int32_t terminalWrite(const void* buf, uint32_t len) {
// Do we need to check for NULL? Can we just skip it/ignore it?
for (i = 0; i < len && str[i] != '\0'; i++) {
if (str[i] == '\n') {
putcAt(' ', terminal->x, terminal->y);
drawChar(' ', terminal->x, terminal->y, terminal->fg, terminal->bg);
terminal->y++;
terminal->x = 0;
} else if (str[i] == '\b') {
putcAt(' ', terminal->x, terminal->y);
drawChar(' ', terminal->x, terminal->y, terminal->fg, terminal->bg);
if (terminal->x == 0) {
terminal->x = terminal->width - 1;
terminal->y--; // Y could be 0?
} else {
terminal->x--;
}
putcAt(' ', terminal->x, terminal->y);
drawChar(' ', terminal->x, terminal->y, terminal->fg, terminal->bg);
} else if (str[i] == '\x1b') { // Escape sequence
if (str[++i] != '[') { // TODO: Support more types of escape sequences
i--;
continue;
}
i++;
uint32_t args[8] = { 0 };
uint8_t argc = 0;
while (1) { // I'm not 100% sure this works, but i'd like to imagine it does
if (argc > 8) break; // Max arg count? idk
uint32_t value = atoi(&str[i]);
args[argc++] = value;
while (value != 0) { // Skip by the number string
value /= 10;
i++;
}
if (str[i] != ';') break;
i++;
}
switch (str[i]) { // TODO: Add default values (see docs/escape.txt)
case 'A': // Cursor up
terminal->y -= args[0];
break;
case 'B': // Cursor down
terminal->y += args[0];
break;
case 'C': // Cursor left
terminal->x -= args[0];
break;
case 'D': // Cursor right
terminal->x += args[0];
break;
case 'E': // nth row
terminal->x = args[0];
break;
case 'F': // nth col
terminal->y = args[0];
break;
case 'G': // show/hide cursor
terminal->hideCursor = args[0] ? false : true;
break;
case 'H': // move cursor to (x,y)
terminal->x = args[0];
terminal->y = args[1];
break;
case 'I': // RESERVED
case 'J': // Erase screen
clearScreen(terminal->bg);
break;
case 'K': // Erase line
break; // TODO
case 'L': // Erase collumn
break; // TODO
case 'M': // Set FG
if (args[0] < 8) {
terminal->fg = codeToColor(args[0]);
} else if (args[0] == 8) {
terminal->fg = FG_COLOR;
}
break;
case 'N': // Set BG
if (args[0] < 8) {
terminal->bg = codeToColor(args[0]);
} else if (args[0] == 8) {
terminal->bg = BG_COLOR;
}
break;
default: break;
}
//i++;
} else {
putcAt(str[i], terminal->x, terminal->y);
drawChar(str[i], terminal->x, terminal->y, terminal->fg, terminal->bg);
terminal->x++;
if (terminal->x >= terminal->width) { // Go to next line
@@ -60,6 +133,13 @@ int32_t terminalWrite(const void* buf, uint32_t len) {
scroll();
return i; // Number of characters that were printed
}
}
void toggleCursor() {
static bool visible = false;
visible = !visible;
drawChar(visible ? 127 : ' ', terminal->x, terminal->y, terminal->fg, terminal->bg);
}
#endif