Files
jsix_import/src/kernel/console.h
2018-04-24 09:32:57 -07:00

66 lines
1.1 KiB
C++

#pragma once
#include "kutil/coord.h"
#include "font.h"
#include "screen.h"
class console_out_screen;
class console
{
public:
console();
void set_color(uint8_t fg, uint8_t bg);
void puts(const char *message);
void printf(const char *fmt, ...);
template <typename T>
void put_hex(T x);
template <typename T>
void put_dec(T x);
static console * get();
private:
console_out_screen *m_screen;
};
extern console g_console;
inline console * console::get() { return &g_console; }
console_out_screen * console_get_screen_out(
const font &f, const screen &s, void *scratch, size_t len);
extern const char digits[];
template <typename T>
void console::put_hex(T x)
{
static const int chars = sizeof(x) * 2;
char message[chars + 1];
for (int i=0; i<chars; ++i) {
message[chars - i - 1] = digits[(x >> (i*4)) & 0xf];
}
message[chars] = 0;
puts(message);
}
template <typename T>
void console::put_dec(T x)
{
static const int chars = sizeof(x) * 3;
char message[chars + 1];
char *p = message + chars;
*p-- = 0;
do {
*p-- = digits[x % 10];
x /= 10;
} while (x != 0);
puts(++p);
}