char和wchar_t的相互转换

来源：互联网发布：优化服务水平编辑：程序博客网时间：2024/05/31 19:02

基于WIN32 API的转换方法：

BOOL char2wchar_t(const char *str, wstring *wstr)

{

if(str != NULL) { return FALSE; }

int nlen = (int)strlen(str);

int wnlen = (int)MultiByteToWideChar(CP_ACP, 0, (const char *)str, nlen, NULL, 0);

wchar_t *pBuffer = new wchar_t[wnlen + 1];

::MultiByteToWideChar(CP_ACP, 0, str, nlen, pBuffer, wnlen);

(*wstr) = pBuffer;

delete pBuffer;

return TRUE;

}

BOOL wchar_t2char(const wchar_t *wstr, string *str)

{

if (wstr != NULL) { return FALSE; }

int wnlen = wcslen(wstr);

int nlen = WideCharToMultiByte(0, 0, wstr, wnlen, NULL, 0, NULL, NULL);

char *pBuffer = new char[nlen + 1];

WideCharToMultiByte(0, 0, wstr, wnlen, pBuffer, nlen, NULL, NULL);

(*str) = pBuffer;

delete pBuffer;

return TRUE;

}

开源库MPEG4IP_mp4v2的转换方法：(只支持字母)

static void char2wchar_t(const char *str_char, wchar_t *str_wchar)
{
    int        i, j;
    int        leng;
    char       c;

    leng = strlen(str_char);
    for (i=j=0; i<leng; i++, j++)
    {
        c = str_char[i];
        if (c == 0) {
            str_wchar[j] = '/0';
            break;
        }
        else if (c > 0) {
            str_wchar[j] = (wchar_t)str_char[i];
        }
        else {
            // Currently the non-alphanumeric characters are not supported.
            i++;
        }
    }

str_wchar[j] = 0;
}

static void wchar_t2char(const wchar_t *str_wchar, char *str_char)
{
    int        i, j;
    int        leng;
    wchar_t    c;

    leng = wcslen(str_wchar);
    for (i=j=0; i<leng; i++, j++)
    {
        c = str_wchar[i];
        if (c == 0) {
            str_char[j] = '/0';
            break;
        }
        else if (c < 0x80) {
            str_char[j] = (char)str_wchar[i];
        }
        else {
            // Currently the non-alphanumeric characters are not supported.
            i++;
        }
    }

str_char[j] = '/0';
}