#if defined(WIN32) && defined(USE_WIN32_IDN)
#include "windows.h"
#include <stdio.h>
#include <tchar.h>
#define IDN_MAX_LENGTH 255
static wchar_t *_curl_win32_UTF8_to_wchar(const char *str_utf8)
{
wchar_t *str_w = NULL;
if (str_utf8) {
int str_w_len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
str_utf8, -1, NULL, 0);
if (str_w_len) {
str_w = (wchar_t *) malloc(str_w_len * sizeof(wchar_t));
if (str_w) {
if (MultiByteToWideChar(CP_UTF8, 0, str_utf8, -1, str_w,
str_w_len) == 0) {
free(str_w);
str_w = NULL;
}
}
}
}
return str_w;
}
static const char *_curl_win32_wchar_to_UTF8(const wchar_t *str_w)
{
char *str_utf8 = NULL;
if (str_w) {
size_t str_utf8_len = WideCharToMultiByte(CP_UTF8, 0, str_w, -1, NULL,
0, NULL, NULL);
DWORD err = GetLastError();
if (str_utf8_len) {
str_utf8 = (char *) malloc(str_utf8_len * sizeof(wchar_t));
if (str_w) {
if (WideCharToMultiByte(CP_UTF8, 0, str_w, -1, str_utf8, str_utf8_len,
NULL, FALSE) == 0) {
DWORD err = GetLastError();
free((void *)str_utf8);
str_utf8 = NULL;
}
}
}
}
return str_utf8;
}
int curl_win32_idn_to_ascii(const char *in, char **out)
{
wchar_t *in_w = _curl_win32_UTF8_to_wchar(in);
if (in_w) {
wchar_t punycode[IDN_MAX_LENGTH];
if (IdnToAscii(0, in_w, -1, punycode, IDN_MAX_LENGTH) == 0) {
wprintf(L"ERROR %d converting to Punycode\n", GetLastError());
free(in_w);
return 0;
}
free(in_w);
*out = (char *)_curl_win32_wchar_to_UTF8(punycode);
if (!(*out)) {
return 0;
}
}
return 1;
}
int curl_win32_ascii_to_idn(const char *in, size_t in_len, char **out_utf8)
{
if (in) {
WCHAR unicode[IDN_MAX_LENGTH];
if (IdnToUnicode(0, (wchar_t *)in, -1, unicode, IDN_MAX_LENGTH) == 0) {
wprintf(L"ERROR %d converting to Punycode\n", GetLastError());
return 0;
}
else {
const char *out_utf8 = _curl_win32_wchar_to_UTF8(unicode);
if (!out_utf8) {
return 0;
}
}
}
return 1;
}
#else
typedef int dummy;
#endif