feature: a lot of stuff and got to a working command line ish

kernel/libc/readline.c

@@ -0,0 +1,30 @@
+//
+// Created by rick on 01-02-21.
+//
+
+#include "readline.h"
+#include <libc/libc.h>
+#include <types.h>
+#include <kprint.h>
+#include <mem/mem.h>
+#include <drivers/keyboard.h>
+
+#define RESULT_SIZE 256
+
+const char* default_msg = "> ";
+
+char* readline(const char *prompt) {
+    kprint(prompt == NULL ? default_msg : prompt);
+
+    char* result = malloc(RESULT_SIZE);
+    memset(result, 0, RESULT_SIZE);
+    for (int i = 0; i < RESULT_SIZE; ++i) {
+        result[i] = getc();
+        kprint(&result[i]);
+        if (result[i] == '\n') {
+            result[i] = 0;
+            break;
+        }
+    }
+    return result;
+}