/* base64.h -- Encode binary data using printable characters.
- Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 2006, 2009, 2010 Free Software Foundation, Inc.
Written by Simon Josefsson.
This program is free software; you can redistribute it and/or modify
integer >= n/k, i.e., the ceiling of n/k. */
# define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4)
+struct base64_decode_context
+{
+ unsigned int i;
+ char buf[4];
+};
+
extern bool isbase64 (char ch);
-extern void base64_encode (const char *in, size_t inlen,
- char *out, size_t outlen);
+extern void base64_encode (const char *restrict in, size_t inlen,
+ char *restrict out, size_t outlen);
extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
-extern bool base64_decode (const char *in, size_t inlen,
- char *out, size_t *outlen);
+extern void base64_decode_ctx_init (struct base64_decode_context *ctx);
+
+extern bool base64_decode_ctx (struct base64_decode_context *ctx,
+ const char *restrict in, size_t inlen,
+ char *restrict out, size_t *outlen);
+
+extern bool base64_decode_alloc_ctx (struct base64_decode_context *ctx,
+ const char *in, size_t inlen,
+ char **out, size_t *outlen);
+
+#define base64_decode(in, inlen, out, outlen) \
+ base64_decode_ctx (NULL, in, inlen, out, outlen)
-extern bool base64_decode_alloc (const char *in, size_t inlen,
- char **out, size_t *outlen);
+#define base64_decode_alloc(in, inlen, out, outlen) \
+ base64_decode_alloc_ctx (NULL, in, inlen, out, outlen)
#endif /* BASE64_H */