处理中文字符相关的函数

1、检测字符串是否包含中文字符

//如果检测到多字节字符，返回1，否则返回0
bool CCommonTool::hasMultiBytes(const char *pSrc)
{
	for (uint16 i = 0; i < strlen(pSrc); i ++)
		if (*(pSrc+i) & 0x80)
			return true;
	return false;
}

2、包含中英文字符的字符串截取指定数目的子串

std::string CCommonTool::multibyteSub( const std::string src, const int sub_num )
{
	const char *pSrc = src.c_str();
	int multibyte_num = 0;
	std::string dest;

	for (uint16 i = 0; i < sub_num; i++)
		if (*(pSrc + i) & 0x80)//中文字符
		{
			multibyte_num++;
		}

	if (multibyte_num % 2 != 0)
		dest = src.substr(0, sub_num - 1);
	else
		dest = src.substr(0, sub_num);

	return dest;
}

 

3、将char转换成wchar_t

wchar_t* CCommonTool::char2wchar_t( const char *src )
{
	int length = strlen(src)+1;
	wchar_t *dst = (wchar_t*)malloc(sizeof(wchar_t)*length);
	memset(dst,0,length*sizeof(wchar_t));
	MultiByteToWideChar(CP_ACP, 0, src, strlen(src), dst, length);
	return dst;
}