ucs2gbk.cpp

ucs2和GBK互相转换的code, 网上的一般是c++, 这是我自己写的. 嵌入式编程里非常有用的哦

// UCS2GBK.cpp: implementation of the UCS2GBK class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "TransTool.h"
#include "UCS2GBK.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

UCS2GBK::UCS2GBK()
{

}

UCS2GBK::~UCS2GBK()
{

}



// ucs2GB.c
// unic <==>gbk

/*************************
*
*
***************************/

extern const unsigned short unic2gbk_table[];
extern const unsigned short gbk2unic_table[];

int UCS2GBK::Unicode2GBK(short *unicode,unsigned short slen,unsigned char *GBK,unsigned short dlen)// return strlen
{
unsigned short *pu;
unsigned char *pc;
unsigned short cc;
unsigned short sl=0,dl=0;
int count = 0;

	pu=(unsigned short *)unicode;
	pc=GBK;
	while(*pu)
	{
		if(*pu<0x80)
		{
			if((dl+1)<dlen)
			{
				*pc++=(unsigned char)*pu++;
				sl++; dl++;
			}
			else
				break;
		}
		else if(*pu>=0x4e00)
		{
			cc=unic2gbk_table[*pu-0x4e00];
			pu++;
			sl++; 
			if((dl+2)<dlen)
			{
				*pc++=cc>>8;				
				*pc++=cc&0xff;
				dl+=2;
			}
			else
				break;
		}
		else
		{
			pu++;	// lost it , 128--0x4e00 , do not valid at GBK , not complete ,need reference the GBK table
			sl++; 
		}
	}
	*pc=0;
	return pc-GBK;
}

#define LINE_NUM 8

int UCS2GBK::GBK2Unicode(unsigned char *GBK,unsigned short slen,unsigned char *unicode,unsigned short dlen)
{
unsigned short *pu;
unsigned char *pc;
unsigned short cc[LINE_NUM];
unsigned short sl=0,dl=0;

char str[20];
int count = 0, cnt=0;
int offset = 10;

	//pu=unicode;
	pc=GBK;

	memset(str,0,20);
	while(*pc)
	{
		if(*pc<0x80)
		{
			if((dl+1)<dlen)
			{
				//*pu++=*pc++;
				cc[count] = *pc++;
				
				sl++; dl++;
				
				sprintf(str,"0x%02X,0x%02X,",(unsigned char)((cc[count]&0xff00)>>8),(unsigned char)(cc[count]&0xff));
				cnt++;
				memcpy((char*)(unicode+offset),str,strlen(str));				
				offset += strlen(str);
				memset(str,0,20);
				count ++;

				if(count == LINE_NUM)
				{
					memcpy((char*)(unicode+offset),"\r\n",2);
					offset += 2;
					count = 0;
				}
			}
			else
				break;
		}
		else
		if(*pc>=0x81 && *(pc+1)>=0x40)
		{
			if((dl+1)<dlen)
			{
				//*pu++=gbk2unic_table[((*pc-0x80)<<8)+*(pc+1)];
				cc[count]=gbk2unic_table[((*pc-0x80)<<8)+*(pc+1)];
				pc+=2;
				sl+=2; dl++;

				sprintf(str,"0x%02X,0x%02X,",(unsigned char)((cc[count]&0xff00)>>8),(unsigned char)(cc[count]&0xff));
				cnt++;
				memcpy((char*)(unicode+offset),str,strlen(str));