/*
 *  linux/lib/vsprintf.c
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
/*
 * Wirzenius wrote this portably, Torvalds fucked it up :-)
 */

#include <stdarg.h>
#include "global.h"
#include "string.h"
#include "ff.h"
#include "memory.h"

char * strstr ( const char *str1, const char *str2)
{
	char *cp = (char *) str1;
	char *s1, *s2;

	if ( !*str2 )
		return((char *)str1);

	while (*cp)
	{
		s1 = cp;
		s2 = (char *) str2;
		while ( *s1 && *s2 && !(*s1-*s2) )
			s1++, s2++;

		if (!*s2)
			return(cp);
		cp++;

	}

	return(NULL);
}

static inline int isdigit(int c)
{
	return c >= '0' && c <= '9';
}

static inline int isxdigit(int c)
{
	return (c >= '0' && c <= '9')
	    || (c >= 'a' && c <= 'f')
	    || (c >= 'A' && c <= 'F');
}

static inline int islower(int c)
{
	return c >= 'a' && c <= 'z';
}

static inline int toupper(int c)
{
	if (islower(c))
		c -= 'a'-'A';
	return c;
}

static int skip_atoi(const char **s)
{
	int i=0;

	while (isdigit(**s))
		i = i*10 + *((*s)++) - '0';
	return i;
}

#define ZEROPAD	1		/* pad with zero */
#define SIGN	2		/* unsigned/signed long */
#define PLUS	4		/* show plus */
#define SPACE	8		/* space if plus */
#define LEFT	16		/* left justified */
#define SPECIAL	32		/* 0x */
#define LARGE	64		/* use 'ABCDEF' instead of 'abcdef' */

#define do_div(n,base) ({ \
int __res; \
__res = ((unsigned long) n) % (unsigned) base; \
n = ((unsigned long) n) / (unsigned) base; \
__res; })

static char * number(char * str, long num, int base, int size, int precision
	,int type)
{
	char c,sign,tmp[66];
	const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
	int i;

	if (type & LARGE)
		digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	if (type & LEFT)
		type &= ~ZEROPAD;
	if (base < 2 || base > 36)
		return 0;
	c = (type & ZEROPAD) ? '0' : ' ';
	sign = 0;
	if (type & SIGN) {
		if (num < 0) {
			sign = '-';
			num = -num;
			size--;
		} else if (type & PLUS) {
			sign = '+';
			size--;
		} else if (type & SPACE) {
			sign = ' ';
			size--;
		}
	}
	if (type & SPECIAL) {
		if (base == 16)
			size -= 2;
		else if (base == 8)
			size--;
	}
	i = 0;
	if (num == 0)
		tmp[i++]='0';
	else while (num != 0)
		tmp[i++] = digits[do_div(num,base)];
	if (i > precision)
		precision = i;
	size -= precision;
	if (!(type&(ZEROPAD+LEFT)))
		while(size-->0)
			*str++ = ' ';
	if (sign)
		*str++ = sign;
	if (type & SPECIAL) {
		if (base==8)
			*str++ = '0';
		else if (base==16) {
			*str++ = '0';
			*str++ = digits[33];
		}
	}
	if (!(type & LEFT))
		while (size-- > 0)
			*str++ = c;
	while (i < precision--)
		*str++ = '0';
	while (i-- > 0)
		*str++ = tmp[i];
	while (size-- > 0)
		*str++ = ' ';
	return str;
}

int vsprintf(char *buf, const char *fmt, va_list args)
{
	int len;
	unsigned long num;
	int i, base;
	char * str;
	const char *s;

	int flags;		/* flags to number() */

	int field_width;	/* width of output field */
	int precision;		/* min. # of digits for integers; max
				   number of chars for from string */
	int qualifier;		/* 'h', 'l', or 'L' for integer fields */

	for(str=buf ; *fmt ; ++fmt)
	{
		if (*fmt != '%') {
			*str++ = *fmt;
			continue;
		}

		/* process flags */
		flags = 0;
		repeat:
			++fmt;		/* this also skips first '%' */
			switch (*fmt) {
				case '-': flags |= LEFT; goto repeat;
				case '+': flags |= PLUS; goto repeat;
				case ' ': flags |= SPACE; goto repeat;
				case '#': flags |= SPECIAL; goto repeat;
				case '0': flags |= ZEROPAD; goto repeat;
				}

		/* get field width */
		field_width = -1;
		if (isdigit(*fmt))
			field_width = skip_atoi(&fmt);
		else if (*fmt == '*') {
			++fmt;
			/* it's the next argument */
			field_width = va_arg(args, int);
			if (field_width < 0) {
				field_width = -field_width;
				flags |= LEFT;
			}
		}

		/* get the precision */
		precision = -1;
		if (*fmt == '.') {
			++fmt;
			if (isdigit(*fmt))
				precision = skip_atoi(&fmt);
			else if (*fmt == '*') {
				++fmt;
				/* it's the next argument */
				precision = va_arg(args, int);
			}
			if (precision < 0)
				precision = 0;
		}

		/* get the conversion qualifier */
		qualifier = -1;
		if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L') {
			qualifier = *fmt;
			++fmt;
		}

		/* default base */
		base = 10;

		switch (*fmt) {
		case 'c':
			if (!(flags & LEFT))
				while (--field_width > 0)
					*str++ = ' ';
			*str++ = (unsigned char) va_arg(args, int);
			while (--field_width > 0)
				*str++ = ' ';
			continue;

		case 's':
			s = va_arg(args, char *);
			//if (!s)
			//	s = "<NULL>";

			len = strnlen(s, precision);

			if (!(flags & LEFT))
				while (len < field_width--)
					*str++ = ' ';
			for (i = 0; i < len; ++i)
				*str++ = *s++;
			while (len < field_width--)
				*str++ = ' ';
			continue;

		case 'p':
			if (field_width == -1) {
				field_width = 2*sizeof(void *);
				flags |= ZEROPAD;
			}
			str = number(str,
				(unsigned long) va_arg(args, void *), 16,
				field_width, precision, flags);
			continue;


		case 'n':
			if (qualifier == 'l') {
				long * ip = va_arg(args, long *);
				*ip = (str - buf);
			} else {
				int * ip = va_arg(args, int *);
				*ip = (str - buf);
			}
			continue;

		case '%':
			*str++ = '%';
			continue;

		/* integer number formats - set up the flags and "break" */
		case 'o':
			base = 8;
			break;

		case 'X':
			flags |= LARGE;
		case 'x':
			base = 16;
			break;

		case 'd':
		case 'i':
			flags |= SIGN;
		case 'u':
			break;

		default:
			*str++ = '%';
			if (*fmt)
				*str++ = *fmt;
			else
				--fmt;
			continue;
		}
		if (qualifier == 'l')
			num = va_arg(args, unsigned long);
		else if (qualifier == 'h') {
			num = (unsigned short) va_arg(args, int);
			if (flags & SIGN)
				num = (short) num;
		} else if (flags & SIGN)
			num = va_arg(args, int);
		else
			num = va_arg(args, unsigned int);
		str = number(str, num, base, field_width, precision, flags);
	}
	*str = '\0';
	return str-buf;
}
int sprintf( char *astr, const char *fmt, ...)
{
	va_list args;
	int i;

	va_start(args, fmt);
	i = vsprintf(astr, fmt, args);
	va_end(args);

	return i;
}

#define EXI 0xD806814

void EXISendByte( char byte )
{

loop:
	*(vu32*)EXI			= 0xD0;
	*(vu32*)(EXI+0x10)	= 0xB0000000 | (byte<<20);
	*(vu32*)(EXI+0x0C)	= 0x19;

	while( *(vu32*)(EXI+0x0C)&1 );

	u32 loop =  *(vu32*)(EXI+0x10)&0x4000000;
	
	*(vu32*)EXI	= 0;

	if( !loop )
		goto loop;

	return;
}
void GeckoSendBuffer( char *buffer )
{
	int i = 0;
	while( buffer[i] != '\0' )
	{
		EXISendByte( buffer[i] );
		++i;
	}

	return;
}

extern FIL Log;

//static char buffer[128] ALIGNED(32);
int dbgprintf( const char *fmt, ...)
{
	//va_list args;
	//
	//va_start(args, fmt);
	//vsprintf(buffer, fmt, args);
	//va_end(args);

	//// Only write debug output to usb gecko when possible
	//if( read32( 0x0D800070 ) & 1 )
	//{
	//	GeckoSendBuffer( buffer );
	//} else  {
	//	u32 read;
	//	u32 fres = f_open( &Log, "/dm.log", FA_READ|FA_WRITE|FA_OPEN_ALWAYS );
	//	if( fres != FR_OK )
	//	{
	//		write32( 0x0D800070, 1 );
	//		dbgprintf("f_open():%d\n", fres );
	//	}

	//	f_lseek( &Log, Log.fsize );
	//	f_write( &Log, buffer, strlen(buffer), &read );
	//	f_close( &Log );
	//}

	return 1;
}


static char ascii(char s)
{
  if(s < 0x20) return '.';
  if(s > 0x7E) return '.';
  return s;
}

void hexdump(void *d, int len)
{
  u8 *data;
  int i, off;
  data = (u8*)d;
  for (off=0; off<len; off += 16) {
    dbgprintf("%08x  ",off);
    for(i=0; i<16; i++)
      if((i+off)>=len) dbgprintf("   ");
      else dbgprintf("%02x ",data[off+i]);

    dbgprintf(" ");
    for(i=0; i<16; i++)
      if((i+off)>=len) dbgprintf(" ");
      else dbgprintf("%c",ascii(data[off+i]));
    dbgprintf("\n");
  }
}

//void fatal(const char *fmt, ...)
//{
//	va_list args;
//	char buffer[1024];
//	int i;
//
//	va_start(args, fmt);
//	i = vsprintf(buffer, fmt, args);
//	va_end(args);
//	OSReport(buffer);
//	for (;;);
//}
//