FM / lzma

/usr/include/lzma

Name	Size	Mode	Actions
base.h	24858	0644	edit dl rm
bcj.h	2630	0644	edit dl rm
block.h	22107	0644	edit dl rm
check.h	4255	0644	edit dl rm
container.h	24844	0644	edit dl rm
delta.h	1865	0644	edit dl rm
filter.h	16520	0644	edit dl rm
hardware.h	2604	0644	edit dl rm
index.h	23491	0644	edit dl rm
index_hash.h	3914	0644	edit dl rm
lzma12.h	14744	0644	edit dl rm
stream_flags.h	8253	0644	edit dl rm
version.h	3497	0644	edit dl rm
vli.h	6546	0644	edit dl rm

Edit: /usr/include/lzma/stream_flags.h (8253B)

/**
 * \file        lzma/stream_flags.h
 * \brief       .xz Stream Header and Stream Footer encoder and decoder
 */

/*
 * Author: Lasse Collin
 *
 * This file has been put into the public domain.
 * You can do whatever you want with this file.
 *
 * See ../lzma.h for information about liblzma as a whole.
 */

#ifndef LZMA_H_INTERNAL
#	error Never include this file directly. Use <lzma.h> instead.
#endif

/**
 * \brief       Size of Stream Header and Stream Footer
 *
 * Stream Header and Stream Footer have the same size and they are not
 * going to change even if a newer version of the .xz file format is
 * developed in future.
 */
#define LZMA_STREAM_HEADER_SIZE 12

/**
 * \brief       Options for encoding/decoding Stream Header and Stream Footer
 */
typedef struct {
	/**
	 * \brief       Stream Flags format version
	 *
	 * To prevent API and ABI breakages if new features are needed in
	 * Stream Header or Stream Footer, a version number is used to
	 * indicate which fields in this structure are in use. For now,
	 * version must always be zero. With non-zero version, the
	 * lzma_stream_header_encode() and lzma_stream_footer_encode()
	 * will return LZMA_OPTIONS_ERROR.
	 *
	 * lzma_stream_header_decode() and lzma_stream_footer_decode()
	 * will always set this to the lowest value that supports all the
	 * features indicated by the Stream Flags field. The application
	 * must check that the version number set by the decoding functions
	 * is supported by the application. Otherwise it is possible that
	 * the application will decode the Stream incorrectly.
	 */
	uint32_t version;

/**
	 * \brief       Backward Size
	 *
	 * Backward Size must be a multiple of four bytes. In this Stream
	 * format version, Backward Size is the size of the Index field.
	 *
	 * Backward Size isn't actually part of the Stream Flags field, but
	 * it is convenient to include in this structure anyway. Backward
	 * Size is present only in the Stream Footer. There is no need to
	 * initialize backward_size when encoding Stream Header.
	 *
	 * lzma_stream_header_decode() always sets backward_size to
	 * LZMA_VLI_UNKNOWN so that it is convenient to use
	 * lzma_stream_flags_compare() when both Stream Header and Stream
	 * Footer have been decoded.
	 */
	lzma_vli backward_size;
#	define LZMA_BACKWARD_SIZE_MIN 4
#	define LZMA_BACKWARD_SIZE_MAX (LZMA_VLI_C(1) << 34)

/**
	 * \brief       Check ID
	 *
	 * This indicates the type of the integrity check calculated from
	 * uncompressed data.
	 */
	lzma_check check;

/*
	 * Reserved space to allow possible future extensions without
	 * breaking the ABI. You should not touch these, because the
	 * names of these variables may change.
	 *
	 * (We will never be able to use all of these since Stream Flags
	 * is just two bytes plus Backward Size of four bytes. But it's
	 * nice to have the proper types when they are needed.)
	 */
	lzma_reserved_enum reserved_enum1;
	lzma_reserved_enum reserved_enum2;
	lzma_reserved_enum reserved_enum3;
	lzma_reserved_enum reserved_enum4;
	lzma_bool reserved_bool1;
	lzma_bool reserved_bool2;
	lzma_bool reserved_bool3;
	lzma_bool reserved_bool4;
	lzma_bool reserved_bool5;
	lzma_bool reserved_bool6;
	lzma_bool reserved_bool7;
	lzma_bool reserved_bool8;
	uint32_t reserved_int1;
	uint32_t reserved_int2;

} lzma_stream_flags;

/**
 * \brief       Encode Stream Header
 *
 * \param       options     Stream Header options to be encoded.
 *                          options->backward_size is ignored and doesn't
 *                          need to be initialized.
 * \param       out         Beginning of the output buffer of
 *                          LZMA_STREAM_HEADER_SIZE bytes.
 *
 * \return      - LZMA_OK: Encoding was successful.
 *              - LZMA_OPTIONS_ERROR: options->version is not supported by
 *                this liblzma version.
 *              - LZMA_PROG_ERROR: Invalid options.
 */
extern LZMA_API(lzma_ret) lzma_stream_header_encode(
		const lzma_stream_flags *options, uint8_t *out)
		lzma_nothrow lzma_attr_warn_unused_result;

/**
 * \brief       Encode Stream Footer
 *
 * \param       options     Stream Footer options to be encoded.
 * \param       out         Beginning of the output buffer of
 *                          LZMA_STREAM_HEADER_SIZE bytes.
 *
 * \return      - LZMA_OK: Encoding was successful.
 *              - LZMA_OPTIONS_ERROR: options->version is not supported by
 *                this liblzma version.
 *              - LZMA_PROG_ERROR: Invalid options.
 */
extern LZMA_API(lzma_ret) lzma_stream_footer_encode(
		const lzma_stream_flags *options, uint8_t *out)
		lzma_nothrow lzma_attr_warn_unused_result;

/**
 * \brief       Decode Stream Header
 *
 * \param       options     Target for the decoded Stream Header options.
 * \param       in          Beginning of the input buffer of
 *                          LZMA_STREAM_HEADER_SIZE bytes.
 *
 * options->backward_size is always set to LZMA_VLI_UNKNOWN. This is to
 * help comparing Stream Flags from Stream Header and Stream Footer with
 * lzma_stream_flags_compare().
 *
 * \return      - LZMA_OK: Decoding was successful.
 *              - LZMA_FORMAT_ERROR: Magic bytes don't match, thus the given
 *                buffer cannot be Stream Header.
 *              - LZMA_DATA_ERROR: CRC32 doesn't match, thus the header
 *                is corrupt.
 *              - LZMA_OPTIONS_ERROR: Unsupported options are present
 *                in the header.
 *
 * \note        When decoding .xz files that contain multiple Streams, it may
 *              make sense to print "file format not recognized" only if
 *              decoding of the Stream Header of the _first_ Stream gives
 *              LZMA_FORMAT_ERROR. If non-first Stream Header gives
 *              LZMA_FORMAT_ERROR, the message used for LZMA_DATA_ERROR is
 *              probably more appropriate.
 *
 *              For example, Stream decoder in liblzma uses LZMA_DATA_ERROR if
 *              LZMA_FORMAT_ERROR is returned by lzma_stream_header_decode()
 *              when decoding non-first Stream.
 */
extern LZMA_API(lzma_ret) lzma_stream_header_decode(
		lzma_stream_flags *options, const uint8_t *in)
		lzma_nothrow lzma_attr_warn_unused_result;

/**
 * \brief       Decode Stream Footer
 *
 * \param       options     Target for the decoded Stream Header options.
 * \param       in          Beginning of the input buffer of
 *                          LZMA_STREAM_HEADER_SIZE bytes.
 *
 * \return      - LZMA_OK: Decoding was successful.
 *              - LZMA_FORMAT_ERROR: Magic bytes don't match, thus the given
 *                buffer cannot be Stream Footer.
 *              - LZMA_DATA_ERROR: CRC32 doesn't match, thus the Stream Footer
 *                is corrupt.
 *              - LZMA_OPTIONS_ERROR: Unsupported options are present
 *                in Stream Footer.
 *
 * \note        If Stream Header was already decoded successfully, but
 *              decoding Stream Footer returns LZMA_FORMAT_ERROR, the
 *              application should probably report some other error message
 *              than "file format not recognized", since the file more likely
 *              is corrupt (possibly truncated). Stream decoder in liblzma
 *              uses LZMA_DATA_ERROR in this situation.
 */
extern LZMA_API(lzma_ret) lzma_stream_footer_decode(
		lzma_stream_flags *options, const uint8_t *in)
		lzma_nothrow lzma_attr_warn_unused_result;

/**
 * \brief       Compare two lzma_stream_flags structures
 *
 * backward_size values are compared only if both are not
 * LZMA_VLI_UNKNOWN.
 *
 * \return      - LZMA_OK: Both are equal. If either had backward_size set
 *                to LZMA_VLI_UNKNOWN, backward_size values were not
 *                compared or validated.
 *              - LZMA_DATA_ERROR: The structures differ.
 *              - LZMA_OPTIONS_ERROR: version in either structure is greater
 *                than the maximum supported version (currently zero).
 *              - LZMA_PROG_ERROR: Invalid value, e.g. invalid check or
 *                backward_size.
 */
extern LZMA_API(lzma_ret) lzma_stream_flags_compare(
		const lzma_stream_flags *a, const lzma_stream_flags *b)
		lzma_nothrow lzma_attr_pure;

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