Imported to git.

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diff --git a/src/liblzma/lz/lz_encoder.h b/src/liblzma/lz/lz_encoder.h
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+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       lz_encoder.h
+/// \brief      LZ in window and match finder API
+//
+//  Copyright (C) 1999-2006 Igor Pavlov
+//  Copyright (C) 2007 Lasse Collin
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZ_ENCODER_H
+#define LZMA_LZ_ENCODER_H
+
+#include "common.h"
+
+
+typedef struct lzma_lz_encoder_s lzma_lz_encoder;
+struct lzma_lz_encoder_s {
+	enum {
+		SEQ_INIT,
+		SEQ_RUN,
+		SEQ_FINISH,
+		SEQ_END
+	} sequence;
+
+	bool (*process)(lzma_coder *coder, uint8_t *restrict out,
+			size_t *restrict out_pos, size_t out_size);
+
+	lzma_vli uncompressed_size;
+
+	///////////////
+	// In Window //
+	///////////////
+
+	/// Pointer to buffer with data to be compressed
+	uint8_t *buffer;
+
+	/// Total size of the allocated buffer (that is, including all
+	/// the extra space)
+	size_t size;
+
+	/// Match finders store locations of matches using 32-bit integers.
+	/// To avoid adjusting several megabytes of integers every time the
+	/// input window is moved with move_window(), we only adjust the
+	/// offset of the buffer. Thus, buffer[match_finder_pos - offset]
+	/// is the byte pointed by match_finder_pos.
+	size_t offset;
+
+	/// buffer[read_pos] is the current byte.
+	size_t read_pos;
+
+	/// As long as read_pos is less than read_limit, there is enough
+	/// input available in buffer for at least one encoding loop.
+	///
+	/// Because of the stateful API, read_limit may and will get greater
+	/// than read_pos quite often. This is taken into account when
+	/// calculating the value for keep_size_after.
+	size_t read_limit;
+
+	/// buffer[write_pos] is the first byte that doesn't contain valid
+	/// uncompressed data; that is, the next input byte will be copied
+	/// to buffer[write_pos].
+	size_t write_pos;
+
+	/// When read_pos >= must_move_pos, move_window() must be called
+	/// to make more space for the input data.
+	size_t must_move_pos;
+
+	/// Number of bytes that must be kept available in our input history.
+	/// That is, once keep_size_before bytes have been processed,
+	/// buffer[read_pos - keep_size_before] is the oldest byte that
+	/// must be available for reading.
+	size_t keep_size_before;
+
+	/// Number of bytes that must be kept in buffer after read_pos.
+	/// That is, read_pos <= write_pos - keep_size_after as long as
+	/// stream_end_was_reached is false (once it is true, read_pos
+	/// is allowed to reach write_pos).
+	size_t keep_size_after;
+
+	/// This is set to true once the last byte of the input data has
+	/// been copied to buffer.
+	bool stream_end_was_reached;
+
+	//////////////////
+	// Match Finder //
+	//////////////////
+
+	// Pointers to match finder functions
+	void (*get_matches)(lzma_lz_encoder *restrict lz,
+			uint32_t *restrict distances);
+	void (*skip)(lzma_lz_encoder *restrict lz, uint32_t num);
+
+	// Match finder data
+	uint32_t *hash; // TODO: Check if hash aliases son
+	uint32_t *son;  //       and add 'restrict' if possible.
+	uint32_t cyclic_buffer_pos;
+	uint32_t cyclic_buffer_size; // Must be dictionary_size + 1.
+	uint32_t hash_mask;
+	uint32_t cut_value;
+	uint32_t hash_size_sum;
+	uint32_t num_items;
+	uint32_t match_max_len;
+};
+
+
+#define LZMA_LZ_ENCODER_INIT \
+	(lzma_lz_encoder){ \
+		.buffer = NULL, \
+		.size = 0, \
+		.hash = NULL, \
+		.num_items = 0, \
+	}
+
+
+/// Calculates
+extern uint32_t lzma_lz_encoder_hash_properties(lzma_match_finder match_finder,
+		uint32_t history_size, uint32_t *restrict hash_mask,
+		uint32_t *restrict hash_size_sum,
+		uint32_t *restrict num_items);
+
+// NOTE: liblzma doesn't use callback API like LZMA SDK does. The caller
+// must make sure that keep_size_after is big enough for single encoding pass
+// i.e. keep_size_after >= maximum number of bytes possibly needed after
+// the current position between calls to lzma_lz_read().
+extern lzma_ret lzma_lz_encoder_reset(lzma_lz_encoder *lz,
+		lzma_allocator *allocator,
+		bool (*process)(lzma_coder *coder, uint8_t *restrict out,
+			size_t *restrict out_pos, size_t out_size),
+		lzma_vli uncompressed_size,
+		size_t history_size, size_t additional_buffer_before,
+		size_t match_max_len, size_t additional_buffer_after,
+		lzma_match_finder match_finder, uint32_t match_finder_cycles,
+		const uint8_t *preset_dictionary,
+		size_t preset_dictionary_size);
+
+/// Frees memory allocated for in window and match finder buffers.
+extern void lzma_lz_encoder_end(
+		lzma_lz_encoder *lz, lzma_allocator *allocator);
+
+extern lzma_ret lzma_lz_encode(lzma_coder *coder,
+		lzma_allocator *allocator lzma_attribute((unused)),
+		const uint8_t *restrict in, size_t *restrict in_pos,
+		size_t in_size, uint8_t *restrict out,
+		size_t *restrict out_pos, size_t out_size,
+		lzma_action action);
+
+/// This should not be called directly, but only via move_pos() macro.
+extern void lzma_lz_encoder_normalize(lzma_lz_encoder *lz);
+
+#endif