/***
 * @文件名称: ctranscode.c
 * @系统名称: 公共库
 * @模块名称: 底层函数库
 * @功能说明: 编码转换函数
 * @当前版本: 1.0.0
 * @修改说明: 创建文件
 */

#include "public.h"
#include "define.h"

//static BYTE szHexByte[] =
//{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9','A', 'B', 'C', 'D', 'E', 'F'};

int Table_ASC_HEX[]={	
	0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
	0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,
	0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,
	0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
	0x40,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f
			};


const char HexToAsc1[]="0123456789ABCDEF";

void Byte2String(int len, unsigned char *InBuf, unsigned char *OutBuf)
{
	for(; len>0; len--)
	{
		(*OutBuf++) = HexToAsc1[((*InBuf)>>4)&0xf];
		(*OutBuf++) = HexToAsc1[(*InBuf++)&0xf];
	}
}

void String2Byte(int len, unsigned char *InBuf, unsigned char *OutBuf)
{
	for(; len>0; len-=2, InBuf+=2)
	{
		(*OutBuf++) = (Table_ASC_HEX[(*InBuf)]<<4)|Table_ASC_HEX[*(InBuf+1)];
	}
}




void hextoasc(unsigned char *asc,unsigned char *hex,int len)
{
  int i;
  int ch;
  
  for(i=0;i<len;i++)
  {

    ch=hex[i]>>4;
    if(ch>=0&&ch<=9)
    {
       asc[i*2]=ch+'0';
    }
    if(ch>=0xA&&ch<=0xF)
    {
       asc[i*2]=ch-0xa+'A';
    }


    ch=hex[i]&0x0F;
    if(ch>=0&&ch<=9)
    {
       asc[i*2+1]=ch+'0';
    }
    if(ch>=0xA&&ch<=0xF)
    {
       asc[i*2+1]=ch-0xa+'A';
    }
  }
}

void asctohex(unsigned char *hex,unsigned char *asc,int len)
{
	int i;
	unsigned char ch;
	
  for(i=0;i<len;i++)
  {
    ch=asc[i];
    if(ch>='0'&&ch<='9')
    {
        ch-='0';
    }
    if(ch>='a'&&ch<='f')
    {
        ch=ch-'a';
        ch=ch+10;
    }
    if(ch>='A'&&ch<='F')
    {
        ch=ch-'A';
        ch=ch+10;
    }

    if(i%2==0)
    {
       hex[i/2]=ch<<4;
    }else
    {
       hex[i/2]=hex[i/2]|ch;
    }

  }
}

void asctoebcd(unsigned char *ebcd,unsigned char *asc,int len)
{
	int i;

	for(i=0;i<len;i++)
	{
		if((asc[i]>='0') && (asc[i]<='9'))
			ebcd[i]=asc[i]-'0' + 0xF0;
		if((asc[i]>='A') && (asc[i]<='F'))
			ebcd[i]=asc[i]-'A' + 0xC1;
		if((asc[i]>='a') && (asc[i]<='f'))
			ebcd[i]=asc[i]-'a' + 0xC1;
	}

}