c == '/' || c == '=' || c == '_')
#define qpspecial(c) (c < ' ' || c == '=' || c == '?' || c == '_')
-#define base64len(n) ((((n) + 2) / 3) * 4) /* String len to base64 len */
-#define strbase64(n) ((n) / 4 * 3) /* Chars that fit in base64 */
-
#define ENCODELINELIMIT 76
static void unfold_header(char **, int);
int, int);
static int scanstring(const char *, int *, int *, int *);
static int utf8len(const char *);
-/*static int pref_encoding(int, int, int);*/
/*
** Encode a message header using RFC 2047 encoding. We make the assumption
return *eightbitchars > 0;
}
-
-#if 0
-
-/*
-** This function is to be used to decide which encoding algorithm we should
-** use if one is not given. Basically, we pick whichever one is the shorter
-** of the two.
-**
-** Arguments are:
-**
-** ascii - Number of ASCII characters in to-be-encoded string.
-** specials - Number of ASCII characters in to-be-encoded string that
-** still require encoding under quoted-printable. Note that
-** these are included in the "ascii" total.
-** eightbit - Eight-bit characters in the to-be-encoded string.
-**
-** Returns one of CE_BASE64 or CE_QUOTED.
-**/
-static int
-pref_encoding(int ascii, int specials, int eightbits)
-{
- /*
- ** The length of the q-p encoding is:
- **
- ** ascii - specials + (specials + eightbits) * 3.
- **
- ** The length of the base64 encoding is:
- **
- ** base64len(ascii + eightbits) (See macro for details)
- */
- return base64len(ascii + eightbits) < (ascii - specials +
- (specials + eightbits) * 3) ? CE_BASE64 : CE_QUOTED;
-}
-
-#endif