stdio.h

一个小型的操作系统,采用gcc进行开发,几千行的代码,方便初学者学习

/*
*  Snixos Project version 1.0, 2003.6
*  (C) Copyright 2003,2004,2005 Jockeyson,KeqiangGao <[e-mail]>
*  All Rights Reserved.
*  Distributed under the terms of the GNU General Public License.
*
*  This program is a free and open source software and you can redistribute 
*  it and/or modify it under the terms of the GNU General Public License as
*  published by the Free Software Foundation. As no any liablity is assumed 
*  for any incidental or consequential damages in connection with the 
*  information or program fragments contained herein,so any exception arised
*  is at your own risk. It is ABSOLUTELY WITHOUT ANY WARRANTY.
*  Bug report please send to [e-mail] .
*/
/*
  stdio.h : prototype for the c function printf() in Snixos project
  Author  : [e-mail]
  Time    : 2003.6
*/

#ifndef _STDIO_H
#define _STDIO_H

#include <stdarg.h>

enum colorMap { 
        ATTRIB_BLACK      = 0x0,
        ATTRIB_BLUE       = 0x1,
        ATTRIB_GREEN      = 0x2,
        ATTRIB_CYAN       = 0x3,
        ATTRIB_RED        = 0x4,
        ATTRIB_MAGENTA    = 0x5,
        ATTRIB_YELLOW     = 0x6,
        ATTRIB_WHITE      = 0x7,
        ATTRIB_BRIGHT     = 0x8,
                               
        ATTRIB_BLACK_BG   = 0x00,
        ATTRIB_BLUE_BG    = 0x10,
        ATTRIB_GREEN_BG   = 0x20,
        ATTRIB_CYAN_BG    = 0x30,
        ATTRIB_RED_BG     = 0x40,
        ATTRIB_MAGENTA_BG = 0x50,
        ATTRIB_YELLOW_BG  = 0x60,
        ATTRIB_WHITE_BG   = 0x70,
        ATTRIB_BLINK      = 0x80
 };

#define VIDTEXT_80X25 0
#define VIDGRAPH_640X480 1

#define NULL 0
#define EOF 0x00 // end of file
#define EOL 0x00 // end of line
#define TRUE 1 
#define FALSE 0 
typedef int size_t;

void screen_init( void );
void screen_gotoxy( int x, int y );
void screen_putchar( int x, int y, unsigned char c, unsigned char attrib );
void set_attrib( unsigned char attrib );

void print_char( char c );
void print_str( char * str );
void print_int( int num );
void print_hex( unsigned int hex, int padded );

void printf( char *fmt, ...);
void sprintf( char *str, char *fmt, ... );
void snprintf( char *str, int len, char *fmt, ... );
#define TXTPutChar screen_putchar

#endif