From 9eb8db15487257d9eb344480f693b319812d3d78 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 12 May 2018 12:47:18 +0200
Subject: Separate base64 implementation

---
 src/string.c | 52 ----------------------------------------------------
 1 file changed, 52 deletions(-)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index 20e2e562..1df8bd1d 100644
--- a/src/string.c
+++ b/src/string.c
@@ -19,7 +19,6 @@
 #include "serd/serd.h"
 
 #include <math.h>
-#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -131,54 +130,3 @@ serd_strtod(const char* str, size_t* end)
 	SET_END(s - str);
 	return result * sign;
 }
-
-/**
-   Base64 decoding table.
-   This is indexed by encoded characters and returns the numeric value used
-   for decoding, shifted up by 47 to be in the range of printable ASCII.
-   A '$' is a placeholder for characters not in the base64 alphabet.
-*/
-static const char b64_unmap[] =
-	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$m$$$ncdefghijkl$$$$$$"
-	"$/0123456789:;<=>?@ABCDEFGH$$$$$$IJKLMNOPQRSTUVWXYZ[\\]^_`ab$$$$"
-	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$"
-	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$";
-
-static inline uint8_t
-unmap(const uint8_t in)
-{
-	return (uint8_t)(b64_unmap[in] - 47);
-}
-
-/**
-   Decode 4 base64 characters to 3 raw bytes.
-*/
-static inline size_t
-decode_chunk(const uint8_t in[4], uint8_t out[3])
-{
-	out[0] = (uint8_t)(((unmap(in[0]) << 2))        | unmap(in[1]) >> 4);
-	out[1] = (uint8_t)(((unmap(in[1]) << 4) & 0xF0) | unmap(in[2]) >> 2);
-	out[2] = (uint8_t)(((unmap(in[2]) << 6) & 0xC0) | unmap(in[3]));
-	return 1u + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
-}
-
-void*
-serd_base64_decode(const char* str, size_t len, size_t* size)
-{
-	const uint8_t* ustr = (const uint8_t*)str;
-
-	void* buf = malloc((len * 3) / 4 + 2);
-	*size = 0;
-	for (size_t i = 0, j = 0; i < len; j += 3) {
-		uint8_t in[] = "====";
-		size_t  n_in = 0;
-		for (; i < len && n_in < 4; ++n_in) {
-			for (; i < len && !is_base64(ustr[i]); ++i) {}  // Skip junk
-			in[n_in] = ustr[i++];
-		}
-		if (n_in > 1) {
-			*size += decode_chunk(in, (uint8_t*)buf + j);
-		}
-	}
-	return buf;
-}
-- 
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