basic: util - add base64mem() function similar to hexmem()

This implements RFC4648 for a slightly more compact representation of
binary data compared to hex (6 bits per character rather than 4).

1 files changed, 5 insertions, 0 deletions

diff --git a/src/basic/util.h b/src/basic/util.h
index ea77907f7f..dae43006e4 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -240,6 +240,8 @@ char octchar(int x) _const_;
 int unoctchar(char c) _const_;
 char decchar(int x) _const_;
 int undecchar(char c) _const_;
+char base64char(int x) _const_;
+int unbase64char(char c) _const_;
 
 char *cescape(const char *s);
 size_t cescape_char(char c, char *buf);
@@ -616,6 +618,9 @@ static inline void *mempset(void *s, int c, size_t n) {
 char *hexmem(const void *p, size_t l);
 int unhexmem(const char *p, size_t l, void **mem, size_t *len);
 
+char *base64mem(const void *p, size_t l);
+int unbase64mem(const char *p, size_t l, void **mem, size_t *len);
+
 char *strextend(char **x, ...) _sentinel_;
 char *strrep(const char *s, unsigned n);