diff options
Diffstat (limited to '')
| -rw-r--r-- | bounce.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/bounce.h b/bounce.h index d07c2cb..b8c2298 100644 --- a/bounce.h +++ b/bounce.h @@ -111,3 +111,35 @@ int getopt_config( int argc, char *const *argv, const char *optstring, const struct option *longopts, int *longindex ); + +static const char Base64[64] = { + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" +}; + +static inline size_t base64Size(size_t len) { + return 1 + (len + 2) / 3 * 4; +} + +static inline void base64(char *dst, const byte *src, size_t len) { + size_t i = 0; + while (len > 2) { + dst[i++] = Base64[0x3F & (src[0] >> 2)]; + dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)]; + dst[i++] = Base64[0x3F & (src[1] << 2 | src[2] >> 6)]; + dst[i++] = Base64[0x3F & src[2]]; + src += 3; + len -= 3; + } + if (len) { + dst[i++] = Base64[0x3F & (src[0] >> 2)]; + if (len > 1) { + dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)]; + dst[i++] = Base64[0x3F & (src[1] << 2)]; + } else { + dst[i++] = Base64[0x3F & (src[0] << 4)]; + dst[i++] = '='; + } + dst[i++] = '='; + } + dst[i] = '\0'; +} |