GIF89a=( �' 7IAXKgNgYvYx\%wh&h}t�h%�s%x�}9�R��&�0%� (�.��5�SD��&�a)�x5��;ͣ*ȡ&ղ)ׯ7׵<ѻ4�3�H֧KͯT��Y�aq��q��F� !� ' !� NETSCAPE2.0 , =( ��pH,�Ȥr�l:xШtJ�Z�جv��z��xL.:��z�n���|N�����~�������& !�0`9R�}��"�"a:S�~x��������g���E�������R���E����B�� ��ȸ��D���"�Ů� �H��L��D٫D�B�����D���T���H �G��A R�ڐ |�� ٭&��E8�S�kG�A�px�a��� R2XB��E8I���6X�:vT)�~��q�賥��"F~%x� � 4#Z�0O|-4Bs�X:= Q� Sal��yXJ`GȦ|s h��K3l7�B|�$'7Jީܪ0!��D�n=�P� ����0`�R�lj����v>���5 �.69�ϸd�����nlv�9��f{���Pbx �l5}�p� ��� �3a���I�O����!ܾ���i��9��#��)p�a ޽ �{�)vm��%D~ 6f��s}Œ�D�W E�`!� �&L8x� �ܝ{)x`X/>�}m��R�*|`D�=�_ ^�5 !_&'a�O�7�c��`DCx`�¥�9�Y�F���`?��"� �n@`�} lď��@4>�d S �v�xN��"@~d��=�g�s~G��� ���ud &p8Q�)ƫlXD����A~H�ySun�j���k*D�LH�] ��C"J��Xb~ʪwSt}6K,��q�S:9ت:���l�@�`�� �.۬�t9�S�[:��=`9N����{¿�A !R�:���6��x�0�_ �;������^���#����!����U���;0L1�����p% A��U̬ݵ��%�S��!���~`�G���� ���=4�np�3���������u�u�ٮ|%2�I��r�#0��J``8�@S@5� ���^`8E�]�.�S���7 � �0�j S�D� z���i�S�����!���l��w9*�D�I�nEX��� &A�Go�Qf��F��;���}�J����F5��Q|���X��T��y���]� o ��C=��:���PB@ D׽S�(>�C�x}`��xJЬ�۠��p+eE0`�}`A �/NE�� �9@��� H�7�!%B0`�l*��!8 2�%� �:�1�0E��ux%nP1�!�C)�P81l�ɸF#Ƭ{����B0>�� �b�`��O3��()yRpb��E.ZD8�H@% �Rx+%���c� ���f��b�d�`F�"8�XH"��-�|1�6iI, 2�$+](A*j� QT�o0.�U�`�R�}`�SN����yae�����b��o~ S)�y�@��3 �tT�0�&�+~L�f"�-|�~��>!�v��~�\Q1)}@�}h#aP72�"�$ !� " , =( &7IAXG]KgNgYvYxR"k\%w]'}h}t�h%�g+�s%r.m3ax3�x�}9��&��+�!7�0%� (�.�SD��&��;�"&ײ)׻4��6�K� �@pH,�Ȥr�l:xШtJ�Z�جv��z��xL.:��z�n���|N�����~�������& !�0`9R�}��"�"a:S�~x��������g �� E �� �������E �´��C���ǶR��D��"Ʒ�ʱH��M��GڬD�B����D��T����G���C�C� l&�~:'�tU�6ɹ#��)�'�.6�&��Ȼ K(8p0N�?!�2"��NIJX>R��OM '��2�*x�>#n� �@<[:�I�f ��T���Cdb��[�}E�5MBo��@�`@��tW-3 �x�B���jI�&E�9[T&$��ﯧ&"s��ȳ����dc�UUρ#���ldj?����`\}���u|3'�R]�6 �S#�!�FKL�*N E���`$�:e�YD�q�.�촁�s \-�jA 9�����-��M[�x(�s��x�|���p��}k�T�DpE@W� ��]k`1� ���Yb ��0l��*n0��"~zBd�~u�7�0Bl��0-�x~|U�U0 �h�*HS�|��e"#"?vp�i`e6^�+q��`m8 #V�� ��VS|`��"m"сSn|@:U���~`pb�G�ED����2F�I�? >�x� R� ��%~jx��<�a�9ij�2�D��&: Z`�]w���:�6��B�7eFJ|�ҧ�,���FǮcS�ʶ+B�,�ܺN���>PAD�HD��~���n��}�#�� Q��S���2�X�{�k�lQ�2�����w�|2� h9��G�,m���3��6-��E�L��I�³*K���q�`DwV�QXS��peS��� qܧTS����R�u �<�a�*At�lmE� � ��N[P1�ۦ��$��@`��Dpy�yXvCAy�B`}D� 0QwG#� �a[^�� $���Ǧ{L�"[��K�g�;�S~��GX.�goT.��ư��x���?1z��x~:�g�|�L� ��S`��0S]P�^p F<""�?!,�!N4&P� ����:T�@h�9%t��:�-~�I<`�9p I&.)^ 40D#p@�j4�ج:�01��rܼF2oW�#Z ;$Q q  �K��Nl#29 !F@�Bh�ᏬL!XF�LHKh�.�hE&J�G��<"WN!�����Y@� >R~19J"�2,/ &.GXB%�R�9B6�W]���W�I�$��9�RE8Y� ��"�A5�Q.axB�&ة�J�! �t)K%tS-�JF b�NMxL��)�R��"���6O!TH�H� 0 !� ) , =( &AXKgNgYvYxR"k\%wh&h}h%�g+�s%r.x3�x�}9��&��+�R,�!7�0%� (�.��5��&�a)��;�"&ף*Ȳ)ׯ7׻4�3��6�H֧KͻH�T��Y��q��h� ��pH,�Ȥr�l:xШtJ�Z�جv��z��xL.:��z�n���|N�����~�������& !�0`9R�}��"�"a:S�~x��������g �� E$����� � ����$E$��"��D� � ������R��C��� E ��H�M��G�D� �B��ϾD��a��`1r��Ӑ�� �o~�zU!L�C'�yW�UGt����ll�0���uG�)A�s[��x� �xO%��X2�  P�n:R/��aHae+�Dm?# ǣ6�8�J�x�Di�M���j���5oQ7�- <! *�l��R2r/a!l)d� A"�E���� &� ;��c �%����b��pe~C"B���H�eF2��`8qb�t_`ur`e� w�u3��Pv�h""�`�Íx�LĹ��3� �~ֺ�:���MDfJ� �۵�W�%�S�X �؁)�@��:E��w�u�Sxb8y\m�zS��Zb�E�L��w!y(>�"w�=�|��s�d �C�W)H�cC$�L �7r.�\{)@�`@ �X�$PD `aaG:���O�72E�amn]�"Rc�x�R� &dR8`g��i�xLR!�P &d����T���i�|�_ � Qi�#�`g:��:noM� :V �)p����W&a=�e�k� j���1߲s�x�W�jal|0��B0�, \j۴:6���C ��W��|��9���zĸV {�;��n��V�m�I��.��PN� ����C��+��By�ѾHŸ:��� 7�Y�FTk�SaoaY$D�S���29R�kt� ��f� ��:��Sp�3�I��DZ� �9���g��u�*3)O��[_hv ,���Et x�BH� �[��64M@�S�M7d�l�ܶ5-��U܍��z�R3Ԭ3~ ��P��5�g: ���kN�&0�j4���#{��3S�2�K�'ợl���2K{� {۶?~m𸧠�I�nE�='����^���_�=��~�#O���'���o..�Y�n��CSO��a��K��o,���b�����{�C�� "�{�K ��w��Ozdը�:$ ���v�] A#� ���a�z)Rx׿ƥ�d``�w-�y�f�K!����|��P��=�`�(f��'Pa ��BJa%��f�%`�}F����6>��`G"�}�=�!o`�^FP�ةQ�C���`(�}\�ݮ ��$<��n@dĠE#��U�I�!� #l��9`k���'Rr��Z�NB�MF �[�+9���-�wj���8�r� ,V�h"�|�S=�G_��"E� 0i*%̲��da0mVk�):;&6p>�jK ��# �D�:�c?:R Ӭf��I-�"�<�="��7�3S��c2RW ,�8(T"P0F¡Jh�" ; 403WebShell
403Webshell
Server IP : 173.249.157.85  /  Your IP : 52.15.60.240
Web Server : Apache
System : Linux server.frogzhost.com 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64
User : econtech ( 1005)
PHP Version : 7.3.33
Disable Function : NONE
MySQL : OFF  |  cURL : OFF  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : ON  |  Pkexec : ON
Directory :  /proc/self/root/usr/include/lzma/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /proc/self/root/usr/include/lzma/block.h
/**
 * \file        lzma/block.h
 * \brief       .xz Block handling
 */

/*
 * 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       Options for the Block and Block Header encoders and decoders
 *
 * Different Block handling functions use different parts of this structure.
 * Some read some members, other functions write, and some do both. Only the
 * members listed for reading need to be initialized when the specified
 * functions are called. The members marked for writing will be assigned
 * new values at some point either by calling the given function or by
 * later calls to lzma_code().
 */
typedef struct {
	/**
	 * \brief       Block format version
	 *
	 * To prevent API and ABI breakages when new features are needed,
	 * a version number is used to indicate which fields in this
	 * structure are in use:
	 *   - liblzma >= 5.0.0: version = 0 is supported.
	 *   - liblzma >= 5.1.4beta: Support for version = 1 was added,
	 *     which adds the ignore_check field.
	 *
	 * If version is greater than one, most Block related functions
	 * will return LZMA_OPTIONS_ERROR (lzma_block_header_decode() works
	 * with any version value).
	 *
	 * Read by:
	 *  - All functions that take pointer to lzma_block as argument,
	 *    including lzma_block_header_decode().
	 *
	 * Written by:
	 *  - lzma_block_header_decode()
	 */
	uint32_t version;

	/**
	 * \brief       Size of the Block Header field
	 *
	 * This is always a multiple of four.
	 *
	 * Read by:
	 *  - lzma_block_header_encode()
	 *  - lzma_block_header_decode()
	 *  - lzma_block_compressed_size()
	 *  - lzma_block_unpadded_size()
	 *  - lzma_block_total_size()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_decode()
	 *
	 * Written by:
	 *  - lzma_block_header_size()
	 *  - lzma_block_buffer_encode()
	 */
	uint32_t header_size;
#	define LZMA_BLOCK_HEADER_SIZE_MIN 8
#	define LZMA_BLOCK_HEADER_SIZE_MAX 1024

	/**
	 * \brief       Type of integrity Check
	 *
	 * The Check ID is not stored into the Block Header, thus its value
	 * must be provided also when decoding.
	 *
	 * Read by:
	 *  - lzma_block_header_encode()
	 *  - lzma_block_header_decode()
	 *  - lzma_block_compressed_size()
	 *  - lzma_block_unpadded_size()
	 *  - lzma_block_total_size()
	 *  - lzma_block_encoder()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_encode()
	 *  - lzma_block_buffer_decode()
	 */
	lzma_check check;

	/**
	 * \brief       Size of the Compressed Data in bytes
	 *
	 * Encoding: If this is not LZMA_VLI_UNKNOWN, Block Header encoder
	 * will store this value to the Block Header. Block encoder doesn't
	 * care about this value, but will set it once the encoding has been
	 * finished.
	 *
	 * Decoding: If this is not LZMA_VLI_UNKNOWN, Block decoder will
	 * verify that the size of the Compressed Data field matches
	 * compressed_size.
	 *
	 * Usually you don't know this value when encoding in streamed mode,
	 * and thus cannot write this field into the Block Header.
	 *
	 * In non-streamed mode you can reserve space for this field before
	 * encoding the actual Block. After encoding the data, finish the
	 * Block by encoding the Block Header. Steps in detail:
	 *
	 *  - Set compressed_size to some big enough value. If you don't know
	 *    better, use LZMA_VLI_MAX, but remember that bigger values take
	 *    more space in Block Header.
	 *
	 *  - Call lzma_block_header_size() to see how much space you need to
	 *    reserve for the Block Header.
	 *
	 *  - Encode the Block using lzma_block_encoder() and lzma_code().
	 *    It sets compressed_size to the correct value.
	 *
	 *  - Use lzma_block_header_encode() to encode the Block Header.
	 *    Because space was reserved in the first step, you don't need
	 *    to call lzma_block_header_size() anymore, because due to
	 *    reserving, header_size has to be big enough. If it is "too big",
	 *    lzma_block_header_encode() will add enough Header Padding to
	 *    make Block Header to match the size specified by header_size.
	 *
	 * Read by:
	 *  - lzma_block_header_size()
	 *  - lzma_block_header_encode()
	 *  - lzma_block_compressed_size()
	 *  - lzma_block_unpadded_size()
	 *  - lzma_block_total_size()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_decode()
	 *
	 * Written by:
	 *  - lzma_block_header_decode()
	 *  - lzma_block_compressed_size()
	 *  - lzma_block_encoder()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_encode()
	 *  - lzma_block_buffer_decode()
	 */
	lzma_vli compressed_size;

	/**
	 * \brief       Uncompressed Size in bytes
	 *
	 * This is handled very similarly to compressed_size above.
	 *
	 * uncompressed_size is needed by fewer functions than
	 * compressed_size. This is because uncompressed_size isn't
	 * needed to validate that Block stays within proper limits.
	 *
	 * Read by:
	 *  - lzma_block_header_size()
	 *  - lzma_block_header_encode()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_decode()
	 *
	 * Written by:
	 *  - lzma_block_header_decode()
	 *  - lzma_block_encoder()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_encode()
	 *  - lzma_block_buffer_decode()
	 */
	lzma_vli uncompressed_size;

	/**
	 * \brief       Array of filters
	 *
	 * There can be 1-4 filters. The end of the array is marked with
	 * .id = LZMA_VLI_UNKNOWN.
	 *
	 * Read by:
	 *  - lzma_block_header_size()
	 *  - lzma_block_header_encode()
	 *  - lzma_block_encoder()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_encode()
	 *  - lzma_block_buffer_decode()
	 *
	 * Written by:
	 *  - lzma_block_header_decode(): Note that this does NOT free()
	 *    the old filter options structures. All unused filters[] will
	 *    have .id == LZMA_VLI_UNKNOWN and .options == NULL. If
	 *    decoding fails, all filters[] are guaranteed to be
	 *    LZMA_VLI_UNKNOWN and NULL.
	 *
	 * \note        Because of the array is terminated with
	 *              .id = LZMA_VLI_UNKNOWN, the actual array must
	 *              have LZMA_FILTERS_MAX + 1 members or the Block
	 *              Header decoder will overflow the buffer.
	 */
	lzma_filter *filters;

	/**
	 * \brief       Raw value stored in the Check field
	 *
	 * After successful coding, the first lzma_check_size(check) bytes
	 * of this array contain the raw value stored in the Check field.
	 *
	 * Note that CRC32 and CRC64 are stored in little endian byte order.
	 * Take it into account if you display the Check values to the user.
	 *
	 * Written by:
	 *  - lzma_block_encoder()
	 *  - lzma_block_decoder()
	 *  - lzma_block_buffer_encode()
	 *  - lzma_block_buffer_decode()
	 */
	uint8_t raw_check[LZMA_CHECK_SIZE_MAX];

	/*
	 * Reserved space to allow possible future extensions without
	 * breaking the ABI. You should not touch these, because the names
	 * of these variables may change. These are and will never be used
	 * with the currently supported options, so it is safe to leave these
	 * uninitialized.
	 */
	void *reserved_ptr1;
	void *reserved_ptr2;
	void *reserved_ptr3;
	uint32_t reserved_int1;
	uint32_t reserved_int2;
	lzma_vli reserved_int3;
	lzma_vli reserved_int4;
	lzma_vli reserved_int5;
	lzma_vli reserved_int6;
	lzma_vli reserved_int7;
	lzma_vli reserved_int8;
	lzma_reserved_enum reserved_enum1;
	lzma_reserved_enum reserved_enum2;
	lzma_reserved_enum reserved_enum3;
	lzma_reserved_enum reserved_enum4;

	/**
	 * \brief       A flag to Block decoder to not verify the Check field
	 *
	 * This field is supported by liblzma >= 5.1.4beta if .version >= 1.
	 *
	 * If this is set to true, the integrity check won't be calculated
	 * and verified. Unless you know what you are doing, you should
	 * leave this to false. (A reason to set this to true is when the
	 * file integrity is verified externally anyway and you want to
	 * speed up the decompression, which matters mostly when using
	 * SHA-256 as the integrity check.)
	 *
	 * If .version >= 1, read by:
	 *   - lzma_block_decoder()
	 *   - lzma_block_buffer_decode()
	 *
	 * Written by (.version is ignored):
	 *   - lzma_block_header_decode() always sets this to false
	 */
	lzma_bool ignore_check;

	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;

} lzma_block;


/**
 * \brief       Decode the Block Header Size field
 *
 * To decode Block Header using lzma_block_header_decode(), the size of the
 * Block Header has to be known and stored into lzma_block.header_size.
 * The size can be calculated from the first byte of a Block using this macro.
 * Note that if the first byte is 0x00, it indicates beginning of Index; use
 * this macro only when the byte is not 0x00.
 *
 * There is no encoding macro, because Block Header encoder is enough for that.
 */
#define lzma_block_header_size_decode(b) (((uint32_t)(b) + 1) * 4)


/**
 * \brief       Calculate Block Header Size
 *
 * Calculate the minimum size needed for the Block Header field using the
 * settings specified in the lzma_block structure. Note that it is OK to
 * increase the calculated header_size value as long as it is a multiple of
 * four and doesn't exceed LZMA_BLOCK_HEADER_SIZE_MAX. Increasing header_size
 * just means that lzma_block_header_encode() will add Header Padding.
 *
 * \return      - LZMA_OK: Size calculated successfully and stored to
 *                block->header_size.
 *              - LZMA_OPTIONS_ERROR: Unsupported version, filters or
 *                filter options.
 *              - LZMA_PROG_ERROR: Invalid values like compressed_size == 0.
 *
 * \note        This doesn't check that all the options are valid i.e. this
 *              may return LZMA_OK even if lzma_block_header_encode() or
 *              lzma_block_encoder() would fail. If you want to validate the
 *              filter chain, consider using lzma_memlimit_encoder() which as
 *              a side-effect validates the filter chain.
 */
extern LZMA_API(lzma_ret) lzma_block_header_size(lzma_block *block)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Encode Block Header
 *
 * The caller must have calculated the size of the Block Header already with
 * lzma_block_header_size(). If a value larger than the one calculated by
 * lzma_block_header_size() is used, the Block Header will be padded to the
 * specified size.
 *
 * \param       out         Beginning of the output buffer. This must be
 *                          at least block->header_size bytes.
 * \param       block       Block options to be encoded.
 *
 * \return      - LZMA_OK: Encoding was successful. block->header_size
 *                bytes were written to output buffer.
 *              - LZMA_OPTIONS_ERROR: Invalid or unsupported options.
 *              - LZMA_PROG_ERROR: Invalid arguments, for example
 *                block->header_size is invalid or block->filters is NULL.
 */
extern LZMA_API(lzma_ret) lzma_block_header_encode(
		const lzma_block *block, uint8_t *out)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Decode Block Header
 *
 * block->version should (usually) be set to the highest value supported
 * by the application. If the application sets block->version to a value
 * higher than supported by the current liblzma version, this function will
 * downgrade block->version to the highest value supported by it. Thus one
 * should check the value of block->version after calling this function if
 * block->version was set to a non-zero value and the application doesn't
 * otherwise know that the liblzma version being used is new enough to
 * support the specified block->version.
 *
 * The size of the Block Header must have already been decoded with
 * lzma_block_header_size_decode() macro and stored to block->header_size.
 *
 * The integrity check type from Stream Header must have been stored
 * to block->check.
 *
 * block->filters must have been allocated, but they don't need to be
 * initialized (possible existing filter options are not freed).
 *
 * \param       block       Destination for Block options.
 * \param       allocator   lzma_allocator for custom allocator functions.
 *                          Set to NULL to use malloc() (and also free()
 *                          if an error occurs).
 * \param       in          Beginning of the input buffer. This must be
 *                          at least block->header_size bytes.
 *
 * \return      - LZMA_OK: Decoding was successful. block->header_size
 *                bytes were read from the input buffer.
 *              - LZMA_OPTIONS_ERROR: The Block Header specifies some
 *                unsupported options such as unsupported filters. This can
 *                happen also if block->version was set to a too low value
 *                compared to what would be required to properly represent
 *                the information stored in the Block Header.
 *              - LZMA_DATA_ERROR: Block Header is corrupt, for example,
 *                the CRC32 doesn't match.
 *              - LZMA_PROG_ERROR: Invalid arguments, for example
 *                block->header_size is invalid or block->filters is NULL.
 */
extern LZMA_API(lzma_ret) lzma_block_header_decode(lzma_block *block,
		const lzma_allocator *allocator, const uint8_t *in)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Validate and set Compressed Size according to Unpadded Size
 *
 * Block Header stores Compressed Size, but Index has Unpadded Size. If the
 * application has already parsed the Index and is now decoding Blocks,
 * it can calculate Compressed Size from Unpadded Size. This function does
 * exactly that with error checking:
 *
 *  - Compressed Size calculated from Unpadded Size must be positive integer,
 *    that is, Unpadded Size must be big enough that after Block Header and
 *    Check fields there's still at least one byte for Compressed Size.
 *
 *  - If Compressed Size was present in Block Header, the new value
 *    calculated from Unpadded Size is compared against the value
 *    from Block Header.
 *
 * \note        This function must be called _after_ decoding the Block Header
 *              field so that it can properly validate Compressed Size if it
 *              was present in Block Header.
 *
 * \return      - LZMA_OK: block->compressed_size was set successfully.
 *              - LZMA_DATA_ERROR: unpadded_size is too small compared to
 *                block->header_size and lzma_check_size(block->check).
 *              - LZMA_PROG_ERROR: Some values are invalid. For example,
 *                block->header_size must be a multiple of four and
 *                between 8 and 1024 inclusive.
 */
extern LZMA_API(lzma_ret) lzma_block_compressed_size(
		lzma_block *block, lzma_vli unpadded_size)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Calculate Unpadded Size
 *
 * The Index field stores Unpadded Size and Uncompressed Size. The latter
 * can be taken directly from the lzma_block structure after coding a Block,
 * but Unpadded Size needs to be calculated from Block Header Size,
 * Compressed Size, and size of the Check field. This is where this function
 * is needed.
 *
 * \return      Unpadded Size on success, or zero on error.
 */
extern LZMA_API(lzma_vli) lzma_block_unpadded_size(const lzma_block *block)
		lzma_nothrow lzma_attr_pure;


/**
 * \brief       Calculate the total encoded size of a Block
 *
 * This is equivalent to lzma_block_unpadded_size() except that the returned
 * value includes the size of the Block Padding field.
 *
 * \return      On success, total encoded size of the Block. On error,
 *              zero is returned.
 */
extern LZMA_API(lzma_vli) lzma_block_total_size(const lzma_block *block)
		lzma_nothrow lzma_attr_pure;


/**
 * \brief       Initialize .xz Block encoder
 *
 * Valid actions for lzma_code() are LZMA_RUN, LZMA_SYNC_FLUSH (only if the
 * filter chain supports it), and LZMA_FINISH.
 *
 * \return      - LZMA_OK: All good, continue with lzma_code().
 *              - LZMA_MEM_ERROR
 *              - LZMA_OPTIONS_ERROR
 *              - LZMA_UNSUPPORTED_CHECK: block->check specifies a Check ID
 *                that is not supported by this buid of liblzma. Initializing
 *                the encoder failed.
 *              - LZMA_PROG_ERROR
 */
extern LZMA_API(lzma_ret) lzma_block_encoder(
		lzma_stream *strm, lzma_block *block)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Initialize .xz Block decoder
 *
 * Valid actions for lzma_code() are LZMA_RUN and LZMA_FINISH. Using
 * LZMA_FINISH is not required. It is supported only for convenience.
 *
 * \return      - LZMA_OK: All good, continue with lzma_code().
 *              - LZMA_UNSUPPORTED_CHECK: Initialization was successful, but
 *                the given Check ID is not supported, thus Check will be
 *                ignored.
 *              - LZMA_PROG_ERROR
 *              - LZMA_MEM_ERROR
 */
extern LZMA_API(lzma_ret) lzma_block_decoder(
		lzma_stream *strm, lzma_block *block)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Calculate maximum output size for single-call Block encoding
 *
 * This is equivalent to lzma_stream_buffer_bound() but for .xz Blocks.
 * See the documentation of lzma_stream_buffer_bound().
 */
extern LZMA_API(size_t) lzma_block_buffer_bound(size_t uncompressed_size)
		lzma_nothrow;


/**
 * \brief       Single-call .xz Block encoder
 *
 * In contrast to the multi-call encoder initialized with
 * lzma_block_encoder(), this function encodes also the Block Header. This
 * is required to make it possible to write appropriate Block Header also
 * in case the data isn't compressible, and different filter chain has to be
 * used to encode the data in uncompressed form using uncompressed chunks
 * of the LZMA2 filter.
 *
 * When the data isn't compressible, header_size, compressed_size, and
 * uncompressed_size are set just like when the data was compressible, but
 * it is possible that header_size is too small to hold the filter chain
 * specified in block->filters, because that isn't necessarily the filter
 * chain that was actually used to encode the data. lzma_block_unpadded_size()
 * still works normally, because it doesn't read the filters array.
 *
 * \param       block       Block options: block->version, block->check,
 *                          and block->filters must have been initialized.
 * \param       allocator   lzma_allocator for custom allocator functions.
 *                          Set to NULL to use malloc() and free().
 * \param       in          Beginning of the input buffer
 * \param       in_size     Size of the input buffer
 * \param       out         Beginning of the output buffer
 * \param       out_pos     The next byte will be written to out[*out_pos].
 *                          *out_pos is updated only if encoding succeeds.
 * \param       out_size    Size of the out buffer; the first byte into
 *                          which no data is written to is out[out_size].
 *
 * \return      - LZMA_OK: Encoding was successful.
 *              - LZMA_BUF_ERROR: Not enough output buffer space.
 *              - LZMA_UNSUPPORTED_CHECK
 *              - LZMA_OPTIONS_ERROR
 *              - LZMA_MEM_ERROR
 *              - LZMA_DATA_ERROR
 *              - LZMA_PROG_ERROR
 */
extern LZMA_API(lzma_ret) lzma_block_buffer_encode(
		lzma_block *block, const lzma_allocator *allocator,
		const uint8_t *in, size_t in_size,
		uint8_t *out, size_t *out_pos, size_t out_size)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Single-call uncompressed .xz Block encoder
 *
 * This is like lzma_block_buffer_encode() except this doesn't try to
 * compress the data and instead encodes the data using LZMA2 uncompressed
 * chunks. The required output buffer size can be determined with
 * lzma_block_buffer_bound().
 *
 * Since the data won't be compressed, this function ignores block->filters.
 * This function doesn't take lzma_allocator because this function doesn't
 * allocate any memory from the heap.
 */
extern LZMA_API(lzma_ret) lzma_block_uncomp_encode(lzma_block *block,
		const uint8_t *in, size_t in_size,
		uint8_t *out, size_t *out_pos, size_t out_size)
		lzma_nothrow lzma_attr_warn_unused_result;


/**
 * \brief       Single-call .xz Block decoder
 *
 * This is single-call equivalent of lzma_block_decoder(), and requires that
 * the caller has already decoded Block Header and checked its memory usage.
 *
 * \param       block       Block options just like with lzma_block_decoder().
 * \param       allocator   lzma_allocator for custom allocator functions.
 *                          Set to NULL to use malloc() and free().
 * \param       in          Beginning of the input buffer
 * \param       in_pos      The next byte will be read from in[*in_pos].
 *                          *in_pos is updated only if decoding succeeds.
 * \param       in_size     Size of the input buffer; the first byte that
 *                          won't be read is in[in_size].
 * \param       out         Beginning of the output buffer
 * \param       out_pos     The next byte will be written to out[*out_pos].
 *                          *out_pos is updated only if encoding succeeds.
 * \param       out_size    Size of the out buffer; the first byte into
 *                          which no data is written to is out[out_size].
 *
 * \return      - LZMA_OK: Decoding was successful.
 *              - LZMA_OPTIONS_ERROR
 *              - LZMA_DATA_ERROR
 *              - LZMA_MEM_ERROR
 *              - LZMA_BUF_ERROR: Output buffer was too small.
 *              - LZMA_PROG_ERROR
 */
extern LZMA_API(lzma_ret) lzma_block_buffer_decode(
		lzma_block *block, const lzma_allocator *allocator,
		const uint8_t *in, size_t *in_pos, size_t in_size,
		uint8_t *out, size_t *out_pos, size_t out_size)
		lzma_nothrow;

Youez - 2016 - github.com/yon3zu
LinuXploit