* (mailbox/filter_trans.c, as of 2004-11-28). Improved by review
* from Paul Eggert, Bruno Haible, and Stepan Kasal.
*
- * See also RFC 3548 <http://www.ietf.org/rfc/rfc3548.txt>.
+ * See also RFC 4648 <http://www.ietf.org/rfc/rfc4648.txt>.
*
* Be careful with error checking. Here is how you would typically
* use these functions:
#include <string.h>
-/* The attribute __const__ was added in gcc 2.95. */
-#undef _GL_ATTRIBUTE_CONST
-#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
-# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
-#else
-# define _GL_ATTRIBUTE_CONST /* empty */
-#endif
-
/* C89 compliant way to cast 'char' to 'unsigned char'. */
static inline unsigned char
to_uchar (char ch)
/* Return true if CH is a character from the Base64 alphabet, and
false otherwise. Note that '=' is padding and not considered to be
part of the alphabet. */
-bool _GL_ATTRIBUTE_CONST
+bool
isbase64 (char ch)
{
return uchar_in_range (to_uchar (ch)) && 0 <= b64[to_uchar (ch)];
{
/* This may allocate a few bytes too many, depending on input,
but it's not worth the extra CPU time to compute the exact size.
- The exact size is 3 * inlen / 4, minus 1 if the input ends
- with "=" and minus another 1 if the input ends with "==".
+ The exact size is 3 * (inlen + (ctx ? ctx->i : 0)) / 4, minus 1 if the
+ input ends with "=" and minus another 1 if the input ends with "==".
Dividing before multiplying avoids the possibility of overflow. */
- size_t needlen = 3 * (inlen / 4) + 2;
+ size_t needlen = 3 * (inlen / 4) + 3;
*out = malloc (needlen);
if (!*out)