forked from PoliEcho-holding-org/kern
Tom-on
536f6b2320
- Chenged Puts() syscall to Write() - Improved syscalls.h - added a new header in terminal/terminal.h - moved gfxMode into screen/gfxmode.h
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
#ifndef TERMINAL_H
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#define TERMINAL_H
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#include <screen/text.h>
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#include <screen/gfxmode.h>
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#include <memory/addresses.h>
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#include <stdint.h>
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#include <stdbool.h>
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typedef struct {
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uint32_t x; // X Position of cursor in characters
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uint32_t y; // Y Position of cursor in characters
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uint32_t bg; // Printed character background
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uint32_t fg; // Printed character foreground
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uint32_t width; // Width in characters
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uint32_t height; // Height in characters
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bool showCursor; // Should we display the cursor
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} terminal_t;
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terminal_t* terminal = (terminal_t*)TERMINAL_INFO_LOC;
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int32_t terminalWrite(const void* buf, uint32_t len) {
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terminal->width = gfxMode->xRes / *(uint8_t*)FONT_WIDTH;
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terminal->height = gfxMode->yRes / *(uint8_t*)FONT_HEIGHT;
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char* str = (char*)buf;
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uint32_t i;
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// Do we need to check for NULL? Can we just skip it/ignore it?
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for (i = 0; i < len && str[i] != '\0'; i++) {
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if (str[i] == '\n') {
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putcAt(' ', terminal->x, terminal->y); // Remove extra cursor
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terminal->y++;
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terminal->x = 0;
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} else if (str[i] == '\b') {
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putcAt(' ', terminal->x, terminal->y); // Remove extra cursor
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if (terminal->x == 0) {
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terminal->x = terminal->width - 1;
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terminal->y--; // Y could be 0?
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} else {
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terminal->x--;
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}
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putcAt(' ', terminal->x, terminal->y);
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} else if (str[i] == '\x1b') { // Escape sequence
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if (str[++i] != '[') { // TODO: Suppord more types of escape sequences
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continue;
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}
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putcAt(str[++i], terminal->x++, terminal->y);
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} else {
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putcAt(str[i], terminal->x, terminal->y);
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terminal->x++;
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if (terminal->x >= terminal->width) { // Go to next line
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terminal->y++;
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terminal->x = 0;
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}
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}
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}
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scroll();
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return i; // Number of characters that were printed
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}
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#endif
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