bintoasc.c

abstract rtos

#include "syscfg.h"

#ifdef __cplusplus
#if __cplusplus
extern "C"{
#endif 
#endif 

#include "aos.h"
 
U8 QuestionMarkToa( U8 ucChar );
U8 aToQuestionMark( U8 ucChar );

U8 QuestionMarkToa( U8 ucChar )
{
    if (ucChar == 0x3F) 
    {
        return 0x61;    
    }

    return ucChar;
}

U8 aToQuestionMark( U8 ucChar )
{
    if (ucChar == 0x61) 
    {
        return 0x3F;    
    }
    
    return ucChar;
}

S32 BinToAsc(U8 *uc_Bin, S32 i_BinLen, S8 *c_AscBuf, S32 i_AscLen)
{
	U32 l;
	S32 i;

#ifdef DEBUG
	if(i_BinLen % 3 != 0)
		return -1;
	if(i_AscLen < (i_BinLen / 3) * 4 )
		return -1;
#endif
	for(i = 0; i < i_BinLen; i += 3)
	{
		l = *(uc_Bin)++ << 8;
		l |= *(uc_Bin)++; 
		l <<= 8;
		l |= *(uc_Bin)++;

		*c_AscBuf ++ = (S8)QuestionMarkToa((U8)(((l >> 18) & 0x3f) + 0x21));
		*c_AscBuf ++ = (S8)QuestionMarkToa((U8)(((l >> 12) & 0x3f) + 0x21));
		*c_AscBuf ++ = (S8)QuestionMarkToa((U8)(((l >> 6) & 0x3f) + 0x21));
		*c_AscBuf ++ = (S8)QuestionMarkToa((U8)((l & 0x3f) + 0x21));
	}
    (void)i_AscLen;
    
	return 0;
}

S32 AscToBin(U8 *uc_Bin, S32 i_BinLen, S8 *c_AscBuf, S32 i_AscLen)
{
	S32 i;
	U32 ul_Value;

	for(i = 0; i < i_AscLen; i += 4)
	{
		ul_Value = aToQuestionMark(*(U8 *)c_AscBuf) - 0x21;
		ul_Value <<= 6;
		c_AscBuf ++;
		ul_Value |= aToQuestionMark(*(U8 *)c_AscBuf) - 0x21;
		c_AscBuf ++;
		ul_Value <<= 6;
		ul_Value |= aToQuestionMark(*(U8 *)c_AscBuf) - 0x21;
		c_AscBuf ++;
		ul_Value <<= 6;
		ul_Value |= aToQuestionMark(*(U8 *)c_AscBuf) - 0x21;
		c_AscBuf ++;

		*(uc_Bin + 2) = (U8)(ul_Value & 0xff);
		ul_Value >>= 8;
		*(uc_Bin + 1) = (U8)(ul_Value & 0xff);
		ul_Value >>= 8;
		*uc_Bin = (U8)(ul_Value & 0xff);
		uc_Bin += 3;
	}
    
    (void)i_BinLen;
    
	return AOS_SUCC;
}




#ifdef __cplusplus
#if __cplusplus
}
#endif 
#endif