Began work on proper terminal I/O

- Chenged Puts() syscall to Write()
- Improved syscalls.h
- added a new header in terminal/terminal.h
- moved gfxMode into screen/gfxmode.h

include/terminal/terminal.h

@@ -0,0 +1,65 @@
+#ifndef TERMINAL_H
+#define TERMINAL_H
+
+#include <screen/text.h>
+#include <screen/gfxmode.h>
+#include <memory/addresses.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct {
+    uint32_t x;         // X Position of cursor in characters
+    uint32_t y;         // Y Position of cursor in characters
+    uint32_t bg;        // Printed character background
+    uint32_t fg;        // Printed character foreground
+    uint32_t width;     // Width in characters 
+    uint32_t height;    // Height in characters
+    bool showCursor;    // Should we display the cursor
+} terminal_t;
+
+terminal_t* terminal = (terminal_t*)TERMINAL_INFO_LOC;
+
+int32_t terminalWrite(const void* buf, uint32_t len) {
+    terminal->width = gfxMode->xRes / *(uint8_t*)FONT_WIDTH;
+    terminal->height = gfxMode->yRes / *(uint8_t*)FONT_HEIGHT;
+
+    char* str = (char*)buf;
+    uint32_t i;
+
+    // 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); // Remove extra cursor
+            terminal->y++;
+            terminal->x = 0;
+        } else if (str[i] == '\b') {
+            putcAt(' ', terminal->x, terminal->y); // Remove extra cursor
+            if (terminal->x == 0) {
+                terminal->x = terminal->width - 1;
+                terminal->y--; // Y could be 0?
+            } else {
+                terminal->x--;
+            }
+            putcAt(' ', terminal->x, terminal->y);
+        } else if (str[i] == '\x1b') { // Escape sequence
+            if (str[++i] != '[') { // TODO: Suppord more types of escape sequences
+                continue;
+            }
+
+            putcAt(str[++i], terminal->x++, terminal->y);
+        } else {
+            putcAt(str[i], terminal->x, terminal->y);
+            terminal->x++;
+
+            if (terminal->x >= terminal->width) { // Go to next line
+                terminal->y++;
+                terminal->x = 0;
+            }
+        }
+    }
+    scroll();
+
+    return i; // Number of characters that were printed
+} 
+
+#endif