多位元組編碼字串與UTF8字元編碼的轉換

2021-06-25 13:33:49 字數 1484 閱讀 6779

1、多位元組編碼字串轉utf8字元編碼

std::string csqlitedbmanager::to_utf8(std::string strdata)


//轉換乙個寬字串到utf8字串


int iutf8len = ::widechartomultibyte(cp_utf8, 0, lpszw, ilen, null, 0, null, null);


if(0 == iutf8len)


char* putf8 = new char[iutf8len];


::memset(putf8, 0, iutf8len);


::widechartomultibyte(cp_utf8, 0, lpszw, ilen, putf8, iutf8len, null, null);


delete pmb;pmb= null;delete lpszw;lpszw = null;


delete putf8;putf8= null;


std::string strtemp = putf8;


return strtemp;


}
2、utf8字元編碼轉多位元組字元編碼


/*將utf8字元轉換成多位元組編碼字串*/


//將utf8字串轉成寬字元字串


int utf8len = strlen(ptempelem->gettext());//ptempelem->gettext()返回的是utf8字元編碼字串


int ilen = multibytetowidechar(cp_utf8, 0, ptempelem->gettext(), utf8len, null, 0);


wchar* lpszw = null;


lpszw = new wchar[ilen];


wmemset(lpszw, 0, ilen);


int irtn = multibytetowidechar(cp_utf8, 0, ptempelem->gettext(), utf8len, lpszw, ilen);


if(irtn != ilen)


//轉換寬字元字串到多位元組字串


int imblen = widechartomultibyte(cp_acp, 0, lpszw, ilen, null, 0, null, null);


if(0 == imblen)


char* pmbstr = new char[imblen];


::memset(pmbstr, 0, imblen); 


irtn = widechartomultibyte(cp_acp, 0, lpszw, ilen, pmbstr, imblen, null, null);


delete lpszw;


if(irtn != imblen)


string strdatatem = pmbstr;
 
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