Clean up and expose base64 implementation

3 files changed, 13 insertions, 55 deletions

diff --git a/src/base64.c b/src/base64.c
index a1849838..2477ff4b 100644
--- a/src/base64.c
+++ b/src/base64.c
@@ -14,8 +14,6 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
-#include "base64.h"
-
 #include "serd_internal.h"
 #include "string_utils.h"
 
@@ -60,11 +58,17 @@ encode_chunk(uint8_t out[4], const uint8_t in[3], size_t n_in)
 }
 
 size_t
-serd_base64_get_length(const size_t size, const bool wrap_lines)
+serd_base64_encoded_length(const size_t size, const bool wrap_lines)
 {
 	return (size + 2) / 3 * 4 + (wrap_lines * ((size - 1) / 57));
 }
 
+size_t
+serd_base64_decoded_size(const size_t len)
+{
+	return (len * 3) / 4 + 2;
+}
+
 bool
 serd_base64_encode(char* const       str,
                    const void* const buf,
@@ -105,13 +109,12 @@ decode_chunk(const uint8_t in[4], uint8_t out[3])
 	return 1 + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
 }
 
-void*
-serd_base64_decode(const char* str, size_t len, size_t* size)
+SerdStatus
+serd_base64_decode(void* buf, size_t* size, const char* str, size_t len)
 {
 	const uint8_t* ustr = (const uint8_t*)str;
 
-	void* buf = malloc((len * 3) / 4 + 2);
-	*size     = 0;
+	*size = 0;
 	for (size_t i = 0, j = 0; i < len; j += 3) {
 		uint8_t in[] = "====";
 		size_t  n_in = 0;
@@ -123,5 +126,6 @@ serd_base64_decode(const char* str, size_t len, size_t* size)
 			*size += decode_chunk(in, (uint8_t*)buf + j);
 		}
 	}
-	return buf;
+
+	return SERD_SUCCESS;
 }
diff --git a/src/base64.h b/src/base64.h
deleted file mode 100644
index cb89491c..00000000
--- a/src/base64.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
-  Copyright 2011-2018 David Robillard <http://drobilla.net>
-
-  Permission to use, copy, modify, and/or distribute this software for any
-  purpose with or without fee is hereby granted, provided that the above
-  copyright notice and this permission notice appear in all copies.
-
-  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#ifndef SERD_BASE64_H
-#define SERD_BASE64_H
-
-#include <stdbool.h>
-#include <stddef.h>
-
-/**
-   Return the number of bytes required to encode `size` bytes in base64.
-
-   @param size The number of input (binary) bytes to encode.
-   @param wrap_lines Wrap lines at 76 characters to conform to RFC 2045.
-   @return The length of the base64 encoding, excluding null terminator.
-*/
-size_t
-serd_base64_get_length(size_t size, bool wrap_lines);
-
-/**
-   Encode `size` bytes of `buf` into `str`, which must be large enough.
-
-   @param str Output string buffer.
-   @param buf Input binary data.
-   @param size Number of bytes to encode from `buf`.
-   @param wrap_lines Wrap lines at 76 characters to conform to RFC 2045.
-   @return True iff `str` contains newlines.
-*/
-bool
-serd_base64_encode(char* str, const void* buf, size_t size, bool wrap_lines);
-
-#endif  // SERD_BASE64_H
diff --git a/src/node.c b/src/node.c
index 54f5a2a4..f57d8897 100644
--- a/src/node.c
+++ b/src/node.c
@@ -16,7 +16,6 @@
 
 #include "node.h"
 
-#include "base64.h"
 #include "serd_internal.h"
 #include "static_nodes.h"
 #include "string_utils.h"
@@ -681,7 +680,7 @@ serd_new_blob(const void*     buf,
 	}
 
 	const SerdNode* type      = datatype ? datatype : &serd_xsd_base64Binary.node;
-	const size_t    len       = serd_base64_get_length(size, wrap_lines);
+	const size_t    len       = serd_base64_encoded_length(size, wrap_lines);
 	const size_t    type_len  = serd_node_total_size(type);
 	const size_t    total_len = len + 1 + type_len;