intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 121 insertions, 0 deletions

diff --git a/contrib/libs/base64/neon32/lib.c b/contrib/libs/base64/neon32/lib.c
new file mode 100644
index 0000000000..52271e925a
--- /dev/null
+++ b/contrib/libs/base64/neon32/lib.c
@@ -0,0 +1,121 @@
+#include <stdint.h>
+#include <stddef.h>
+
+#include "libbase64.h"
+#include "codecs.h"
+
+const uint8_t
+neon32_base64_table_enc[] =
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	"abcdefghijklmnopqrstuvwxyz"
+	"0123456789+/";
+
+// In the lookup table below, note that the value for '=' (character 61) is
+// 254, not 255. This character is used for in-band signaling of the end of
+// the datastream, and we will use that later. The characters A-Z, a-z, 0-9
+// and + / are mapped to their "decoded" values. The other bytes all map to
+// the value 255, which flags them as "invalid input".
+
+const uint8_t
+neon32_base64_table_dec[] =
+{
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,		//   0..15
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,		//  16..31
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,  62, 254,  62, 255,  63,		//  32..47
+	 52,  53,  54,  55,  56,  57,  58,  59,  60,  61, 255, 255, 255, 254, 255, 255,		//  48..63
+	255,   0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,		//  64..79
+	 15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25, 255, 255, 255, 255,  63,		//  80..95
+	255,  26,  27,  28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,		//  96..111
+	 41,  42,  43,  44,  45,  46,  47,  48,  49,  50,  51, 255, 255, 255, 255, 255,		// 112..127
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,		// 128..143
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+};
+
+void
+neon32_base64_stream_encode_init (struct neon32_base64_state *state)
+{
+	state->eof = 0;
+	state->bytes = 0;
+	state->carry = 0;
+}
+
+void
+neon32_base64_stream_encode_final
+	( struct neon32_base64_state	*state
+	, char			*out
+	, size_t		*outlen
+	)
+{
+	uint8_t *o = (uint8_t *)out;
+
+	if (state->bytes == 1) {
+		*o++ = neon32_base64_table_enc[state->carry];
+		*o++ = '=';
+		*o++ = '=';
+		*outlen = 3;
+		return;
+	}
+	if (state->bytes == 2) {
+		*o++ = neon32_base64_table_enc[state->carry];
+		*o++ = '=';
+		*outlen = 2;
+		return;
+	}
+	*outlen = 0;
+}
+
+void
+neon32_base64_stream_decode_init (struct neon32_base64_state *state)
+{
+	state->eof = 0;
+	state->bytes = 0;
+	state->carry = 0;
+}
+
+void
+neon32_base64_encode
+	( const char	*src
+	, size_t	 srclen
+	, char		*out
+	, size_t	*outlen
+	)
+{
+	size_t s;
+	size_t t;
+	struct neon32_base64_state state;
+
+	// Init the stream reader:
+	neon32_base64_stream_encode_init(&state);
+
+	// Feed the whole string to the stream reader:
+	neon32_base64_stream_encode(&state, src, srclen, out, &s);
+
+	// Finalize the stream by writing trailer if any:
+	neon32_base64_stream_encode_final(&state, out + s, &t);
+
+	// Final output length is stream length plus tail:
+	*outlen = s + t;
+}
+
+int
+neon32_base64_decode
+	( const char	*src
+	, size_t	 srclen
+	, char		*out
+	, size_t	*outlen
+	)
+{
+	struct neon32_base64_state state;
+
+	// Init the stream reader:
+	neon32_base64_stream_decode_init(&state);
+
+	// Feed the whole string to the stream reader:
+	return neon32_base64_stream_decode(&state, src, srclen, out, outlen);
+}