Import of liblzma, xz, xzdec, lzmainfo from vendor branch

Add support for xz and lzma to lesspipe.sh (xzless, lzless)
Bump __FreeBSD_version

Approved by:	delphij (mentor)
MFC after:	2 weeks

1 files changed, 27 insertions, 0 deletions

diff --git a/contrib/xz/src/liblzma/common/easy_buffer_encoder.c b/contrib/xz/src/liblzma/common/easy_buffer_encoder.c
new file mode 100644
index 0000000..c4be34c
--- /dev/null
+++ b/contrib/xz/src/liblzma/common/easy_buffer_encoder.c
@@ -0,0 +1,27 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       easy_buffer_encoder.c
+/// \brief      Easy single-call .xz Stream encoder
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "easy_preset.h"
+
+
+extern LZMA_API(lzma_ret)
+lzma_easy_buffer_encode(uint32_t preset, lzma_check check,
+		lzma_allocator *allocator, const uint8_t *in, size_t in_size,
+		uint8_t *out, size_t *out_pos, size_t out_size)
+{
+	lzma_options_easy opt_easy;
+	if (lzma_easy_preset(&opt_easy, preset))
+		return LZMA_OPTIONS_ERROR;
+
+	return lzma_stream_buffer_encode(opt_easy.filters, check,
+			allocator, in, in_size, out, out_pos, out_size);
+}