X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fbase64.h;h=9c31651e4c801c6e796bfd73e5918767e0a77cd4;hb=1a2869593e115e4a6c74aaa0b23ca612357403ce;hp=6bb9a97f585c3ea80f73db252e4065d262396562;hpb=330cb3c3b1781ebeba414c39ce0560a30e1c36d4;p=gnulib.git

diff --git a/lib/base64.h b/lib/base64.h
index 6bb9a97f5..9c31651e4 100644
--- a/lib/base64.h
+++ b/lib/base64.h
@@ -29,6 +29,12 @@
    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 *restrict in, size_t inlen,
@@ -36,10 +42,20 @@ extern void base64_encode (const char *restrict in, size_t inlen,
 
 extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
 
-extern bool base64_decode (const char *restrict in, size_t inlen,
-			   char *restrict 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 */