c++使用iconv从UTF-8转换为wstring

Question

我有一个运行以下程序的 C++ Linux 应用程序:

int main()
{
  using namespace std;
  char str[] = "¡Hola!";

  wchar_t wstr[50];

  size_t rc;

  memset(wstr, 0, sizeof(wstr));

  rc = mbstowcs(wstr, str, 50);

  cout << "mbstowcs results: ";
  cout << "rc = " << rc << endl;
  cout << "str:" << str  << endl;
  wcout << L"wstr:" << wstr  << endl;
  setlocale(LC_CTYPE,"");
  iconv_t cd = iconv_open("WCHAR_T", "UTF-8");
  cout << "iconv_open errno = "<< errno << endl;

  char *s = str;
  char *t = (char *)wstr;
  size_t s1 = strlen(str);
  size_t s2 = 50;

  rc = iconv(cd, &s, &s1, &t, &s2);

  cout << "iconv results: ";
  cout << "rc = " << rc << endl;
  cout << "str:" << str  << endl;
  wcout << L"wstr:" << wstr  << endl;

}

我想将 UTF-8 字符 vector 转换为 wstring，但上面的代码返回了这个结果:

 mbstowcs results: rc = 18446744073709551615
    str:¡Hola!
    wstr:
    iconv_open errno = 2
    iconv results: rc = 0
    str:¡Hola!
    wstr:�Hola!

iconv 结果将第一个字符转换为另一个字符。

注意:如果我替换 UCS-4 -INTERNAL 中的 WCHAR_T，则 wstr 不包含任何内容。

有什么帮助吗？

谢谢!

Answer 1

是否可以使用 boost？

http://www.boost.org/doc/libs/1_46_1/libs/serialization/doc/codecvt.html