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#ifndef NULLSOFT_AUTOHEADERH
#define NULLSOFT_AUTOHEADERH
#include <windows.h>
#include "AutoChar.h"
/* encodes a UTF-8 string into a buffer, returns a pointer to the end of the string */
inline char *AutoHeader_Encode(const char *in, char *out, size_t len)
{
if (!len)
return 0;
char *dest=out;
const unsigned char *src = (const unsigned char *)in;
while (*src && --len)
{
if ((*src >= 'A' && *src <= 'Z') ||
(*src >= 'a' && *src <= 'z') ||
(*src >= '0' && *src <= '9') || *src == '.' || *src == '-' || *src == '~')
{
*dest++=*src++;
}
else if (len > 2)
{
int i = *src++;
*dest++ = '=';
int b = (i >> 4) & 15;
if (b < 10) *dest++ = '0' + b;
else *dest++ = 'A' + b - 10;
b = i & 15;
if (b < 10) *dest++ = '0' + b;
else *dest++ = 'A' + b - 10;
}
else
break;
}
*dest=0;
return dest;
}
inline char *AutoHeaderDup(const wchar_t *convert)
{
if (!convert)
return 0;
BOOL failed=FALSE;
int n = WideCharToMultiByte(28591, WC_NO_BEST_FIT_CHARS, convert, -1, 0, 0, 0, &failed);
if (n && !failed)
{
char *url = (char *)malloc(n + 1);
WideCharToMultiByte(28591, WC_NO_BEST_FIT_CHARS, convert, -1, url, n+1, 0, 0);
return url;
}
AutoChar utf8(convert, CP_UTF8);
size_t size = strlen(utf8)*3+1; // one byte might get encoded to 3 bytes, so we'll malloc for worst-case
char *url= (char *)malloc((9 /*?utf-8?q?*/+ size + 2 /*?=*/)*sizeof(char));
memcpy(url, "?utf-8?q?", 9);
char *end = AutoHeader_Encode(utf8, url+9, size);
strcpy(end, "?=");
return url;
}
class AutoHeader
{
public:
AutoHeader(const wchar_t *convert) : narrow(0)
{
narrow = AutoHeaderDup(convert);
}
AutoHeader(const AutoHeader &convert) : narrow(0)
{
if (convert.narrow)
narrow = _strdup(convert.narrow);
}
~AutoHeader()
{
free(narrow);
narrow=0;
}
operator const char *()
{
return narrow;
}
operator char *()
{
return narrow;
}
private:
char *narrow;
};
#endif
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