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ton
2024-10-07 10:13:40 +07:00
parent aa1631742f
commit 3a7d696db6
9729 changed files with 1832837 additions and 161742 deletions
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472
.CondaPkg/env/Library/include/lzma/container.h vendored
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@@ -1,6 +1,7 @@
/**
* \file lzma/container.h
* \brief File formats
* \note Never include this file directly. Use <lzma.h> instead.
*/
/*
@@ -8,8 +9,6 @@
*
* 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
@@ -51,7 +50,7 @@
*
* This flag modifies the preset to make the encoding significantly slower
* while improving the compression ratio only marginally. This is useful
* when you don't mind wasting time to get as small result as possible.
* when you don't mind spending time to get as small result as possible.
*
* This flag doesn't affect the memory usage requirements of the decoder (at
* least not significantly). The memory usage of the encoder may be increased
@@ -69,7 +68,15 @@ typedef struct {
*
* Set this to zero if no flags are wanted.
*
* No flags are currently supported.
* Encoder: No flags are currently supported.
*
* Decoder: Bitwise-or of zero or more of the decoder flags:
* - LZMA_TELL_NO_CHECK
* - LZMA_TELL_UNSUPPORTED_CHECK
* - LZMA_TELL_ANY_CHECK
* - LZMA_IGNORE_CHECK
* - LZMA_CONCATENATED
* - LZMA_FAIL_FAST
*/
uint32_t flags;
@@ -79,7 +86,7 @@ typedef struct {
uint32_t threads;
/**
* \brief Maximum uncompressed size of a Block
* \brief Encoder only: Maximum uncompressed size of a Block
*
* The encoder will start a new .xz Block every block_size bytes.
* Using LZMA_FULL_FLUSH or LZMA_FULL_BARRIER with lzma_code()
@@ -106,7 +113,7 @@ typedef struct {
/**
* \brief Timeout to allow lzma_code() to return early
*
* Multithreading can make liblzma to consume input and produce
* Multithreading can make liblzma consume input and produce
* output in a very bursty way: it may first read a lot of input
* to fill internal buffers, then no input or output occurs for
* a while.
@@ -123,19 +130,18 @@ typedef struct {
* LZMA_OK. Reasonable values are 100 ms or more. The xz command
* line tool uses 300 ms.
*
* If long blocking times are fine for you, set timeout to a special
* value of 0, which will disable the timeout mechanism and will make
* If long blocking times are acceptable, set timeout to a special
* value of 0. This will disable the timeout mechanism and will make
* lzma_code() block until all the input is consumed or the output
* buffer has been filled.
*
* \note Even with a timeout, lzma_code() might sometimes take
* somewhat long time to return. No timing guarantees
* are made.
* a long time to return. No timing guarantees are made.
*/
uint32_t timeout;
/**
* \brief Compression preset (level and possible flags)
* \brief Encoder only: Compression preset
*
* The preset is set just like with lzma_easy_encoder().
* The preset is ignored if filters below is non-NULL.
@@ -143,7 +149,7 @@ typedef struct {
uint32_t preset;
/**
* \brief Filter chain (alternative to a preset)
* \brief Encoder only: Filter chain (alternative to a preset)
*
* If this is NULL, the preset above is used. Otherwise the preset
* is ignored and the filter chain specified here is used.
@@ -151,7 +157,7 @@ typedef struct {
const lzma_filter *filters;
/**
* \brief Integrity check type
* \brief Encoder only: Integrity check type
*
* See check.h for available checks. The xz command line tool
* defaults to LZMA_CHECK_CRC64, which is a good choice if you
@@ -166,20 +172,86 @@ typedef struct {
* with the currently supported options, so it is safe to leave these
* uninitialized.
*/
/** \private Reserved member. */
lzma_reserved_enum reserved_enum1;
/** \private Reserved member. */
lzma_reserved_enum reserved_enum2;
/** \private Reserved member. */
lzma_reserved_enum reserved_enum3;
/** \private Reserved member. */
uint32_t reserved_int1;
/** \private Reserved member. */
uint32_t reserved_int2;
/** \private Reserved member. */
uint32_t reserved_int3;
/** \private Reserved member. */
uint32_t reserved_int4;
uint64_t reserved_int5;
uint64_t reserved_int6;
/**
* \brief Memory usage limit to reduce the number of threads
*
* Encoder: Ignored.
*
* Decoder:
*
* If the number of threads has been set so high that more than
* memlimit_threading bytes of memory would be needed, the number
* of threads will be reduced so that the memory usage will not exceed
* memlimit_threading bytes. However, if memlimit_threading cannot
* be met even in single-threaded mode, then decoding will continue
* in single-threaded mode and memlimit_threading may be exceeded
* even by a large amount. That is, memlimit_threading will never make
* lzma_code() return LZMA_MEMLIMIT_ERROR. To truly cap the memory
* usage, see memlimit_stop below.
*
* Setting memlimit_threading to UINT64_MAX or a similar huge value
* means that liblzma is allowed to keep the whole compressed file
* and the whole uncompressed file in memory in addition to the memory
* needed by the decompressor data structures used by each thread!
* In other words, a reasonable value limit must be set here or it
* will cause problems sooner or later. If you have no idea what
* a reasonable value could be, try lzma_physmem() / 4 as a starting
* point. Setting this limit will never prevent decompression of
* a file; this will only reduce the number of threads.
*
* If memlimit_threading is greater than memlimit_stop, then the value
* of memlimit_stop will be used for both.
*/
uint64_t memlimit_threading;
/**
* \brief Memory usage limit that should never be exceeded
*
* Encoder: Ignored.
*
* Decoder: If decompressing will need more than this amount of
* memory even in the single-threaded mode, then lzma_code() will
* return LZMA_MEMLIMIT_ERROR.
*/
uint64_t memlimit_stop;
/** \private Reserved member. */
uint64_t reserved_int7;
/** \private Reserved member. */
uint64_t reserved_int8;
/** \private Reserved member. */
void *reserved_ptr1;
/** \private Reserved member. */
void *reserved_ptr2;
/** \private Reserved member. */
void *reserved_ptr3;
/** \private Reserved member. */
void *reserved_ptr4;
} lzma_mt;
@@ -193,8 +265,7 @@ typedef struct {
* \param preset Compression preset (level and possible flags)
*
* \return Number of bytes of memory required for the given
* preset when encoding. If an error occurs, for example
* due to unsupported preset, UINT64_MAX is returned.
* preset when encoding or UINT64_MAX on error.
*/
extern LZMA_API(uint64_t) lzma_easy_encoder_memusage(uint32_t preset)
lzma_nothrow lzma_attr_pure;
@@ -208,9 +279,8 @@ extern LZMA_API(uint64_t) lzma_easy_encoder_memusage(uint32_t preset)
* \param preset Compression preset (level and possible flags)
*
* \return Number of bytes of memory required to decompress a file
* that was compressed using the given preset. If an error
* occurs, for example due to unsupported preset, UINT64_MAX
* is returned.
* that was compressed using the given preset or UINT64_MAX
* on error.
*/
extern LZMA_API(uint64_t) lzma_easy_decoder_memusage(uint32_t preset)
lzma_nothrow lzma_attr_pure;
@@ -220,7 +290,16 @@ extern LZMA_API(uint64_t) lzma_easy_decoder_memusage(uint32_t preset)
* \brief Initialize .xz Stream encoder using a preset number
*
* This function is intended for those who just want to use the basic features
* if liblzma (that is, most developers out there).
* of liblzma (that is, most developers out there).
*
* If initialization fails (return value is not LZMA_OK), all the memory
* allocated for *strm by liblzma is always freed. Thus, there is no need
* to call lzma_end() after failed initialization.
*
* If initialization succeeds, use lzma_code() to do the actual encoding.
* Valid values for `action' (the second argument of lzma_code()) are
* LZMA_RUN, LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, and LZMA_FINISH. In future,
* there may be compression levels or flags that don't support LZMA_SYNC_FLUSH.
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
@@ -236,7 +315,8 @@ extern LZMA_API(uint64_t) lzma_easy_decoder_memusage(uint32_t preset)
* unsure. LZMA_CHECK_CRC32 is good too as long as the
* uncompressed file is not many gigabytes.
*
* \return - LZMA_OK: Initialization succeeded. Use lzma_code() to
* \return Possible lzma_ret values:
* - LZMA_OK: Initialization succeeded. Use lzma_code() to
* encode your data.
* - LZMA_MEM_ERROR: Memory allocation failed.
* - LZMA_OPTIONS_ERROR: The given compression preset is not
@@ -245,15 +325,6 @@ extern LZMA_API(uint64_t) lzma_easy_decoder_memusage(uint32_t preset)
* supported by this liblzma build.
* - LZMA_PROG_ERROR: One or more of the parameters have values
* that will never be valid. For example, strm == NULL.
*
* If initialization fails (return value is not LZMA_OK), all the memory
* allocated for *strm by liblzma is always freed. Thus, there is no need
* to call lzma_end() after failed initialization.
*
* If initialization succeeds, use lzma_code() to do the actual encoding.
* Valid values for `action' (the second argument of lzma_code()) are
* LZMA_RUN, LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, and LZMA_FINISH. In future,
* there may be compression levels or flags that don't support LZMA_SYNC_FLUSH.
*/
extern LZMA_API(lzma_ret) lzma_easy_encoder(
lzma_stream *strm, uint32_t preset, lzma_check check)
@@ -274,13 +345,14 @@ extern LZMA_API(lzma_ret) lzma_easy_encoder(
* 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].
* \param[out] out Beginning of the output buffer
* \param[out] 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.
* \return Possible lzma_ret values:
* - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Not enough output buffer space.
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
@@ -298,14 +370,16 @@ extern LZMA_API(lzma_ret) lzma_easy_buffer_encode(
/**
* \brief Initialize .xz Stream encoder using a custom filter chain
*
* \param strm Pointer to properly prepared lzma_stream
* \param filters Array of filters. This must be terminated with
* filters[n].id = LZMA_VLI_UNKNOWN. See filter.h for
* more information.
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param filters Array of filters terminated with
* .id == LZMA_VLI_UNKNOWN. See filters.h for more
* information.
* \param check Type of the integrity check to calculate from
* uncompressed data.
*
* \return - LZMA_OK: Initialization was successful.
* \return Possible lzma_ret values:
* - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
@@ -345,10 +419,12 @@ extern LZMA_API(uint64_t) lzma_stream_encoder_mt_memusage(
* LZMA_FULL_BARRIER, and LZMA_FINISH. Support for LZMA_SYNC_FLUSH might be
* added in the future.
*
* \param strm Pointer to properly prepared lzma_stream
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param options Pointer to multithreaded compression options
*
* \return - LZMA_OK
* \return Possible lzma_ret values:
* - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
@@ -374,7 +450,12 @@ extern LZMA_API(lzma_ret) lzma_stream_encoder_mt(
* No kind of flushing is supported, because the file format doesn't make
* it possible.
*
* \return - LZMA_OK
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param options Pointer to encoder options
*
* \return Possible lzma_ret values:
* - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
@@ -387,7 +468,7 @@ extern LZMA_API(lzma_ret) lzma_alone_encoder(
/**
* \brief Calculate output buffer size for single-call Stream encoder
*
* When trying to compress uncompressible data, the encoded size will be
* When trying to compress incompressible data, the encoded size will be
* slightly bigger than the input data. This function calculates how much
* output buffer space is required to be sure that lzma_stream_buffer_encode()
* doesn't return LZMA_BUF_ERROR.
@@ -403,8 +484,13 @@ extern LZMA_API(lzma_ret) lzma_alone_encoder(
* \note The limit calculated by this function applies only to
* single-call encoding. Multi-call encoding may (and probably
* will) have larger maximum expansion when encoding
* uncompressible data. Currently there is no function to
* incompressible data. Currently there is no function to
* calculate the maximum expansion of multi-call encoding.
*
* \param uncompressed_size Size in bytes of the uncompressed
* input data
*
* \return Maximum number of bytes needed to store the compressed data.
*/
extern LZMA_API(size_t) lzma_stream_buffer_bound(size_t uncompressed_size)
lzma_nothrow;
@@ -413,22 +499,23 @@ extern LZMA_API(size_t) lzma_stream_buffer_bound(size_t uncompressed_size)
/**
* \brief Single-call .xz Stream encoder
*
* \param filters Array of filters. This must be terminated with
* filters[n].id = LZMA_VLI_UNKNOWN. See filter.h
* for more information.
* \param filters Array of filters terminated with
* .id == LZMA_VLI_UNKNOWN. See filters.h for more
* information.
* \param check Type of the integrity check to calculate from
* uncompressed data.
* \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].
* \param[out] out Beginning of the output buffer
* \param[out] 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.
* \return Possible lzma_ret values:
* - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Not enough output buffer space.
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
@@ -444,6 +531,66 @@ extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief MicroLZMA encoder
*
* The MicroLZMA format is a raw LZMA stream whose first byte (always 0x00)
* has been replaced with bitwise-negation of the LZMA properties (lc/lp/pb).
* This encoding ensures that the first byte of MicroLZMA stream is never
* 0x00. There is no end of payload marker and thus the uncompressed size
* must be stored separately. For the best error detection the dictionary
* size should be stored separately as well but alternatively one may use
* the uncompressed size as the dictionary size when decoding.
*
* With the MicroLZMA encoder, lzma_code() behaves slightly unusually.
* The action argument must be LZMA_FINISH and the return value will never be
* LZMA_OK. Thus the encoding is always done with a single lzma_code() after
* the initialization. The benefit of the combination of initialization
* function and lzma_code() is that memory allocations can be re-used for
* better performance.
*
* lzma_code() will try to encode as much input as is possible to fit into
* the given output buffer. If not all input can be encoded, the stream will
* be finished without encoding all the input. The caller must check both
* input and output buffer usage after lzma_code() (total_in and total_out
* in lzma_stream can be convenient). Often lzma_code() can fill the output
* buffer completely if there is a lot of input, but sometimes a few bytes
* may remain unused because the next LZMA symbol would require more space.
*
* lzma_stream.avail_out must be at least 6. Otherwise LZMA_PROG_ERROR
* will be returned.
*
* The LZMA dictionary should be reasonably low to speed up the encoder
* re-initialization. A good value is bigger than the resulting
* uncompressed size of most of the output chunks. For example, if output
* size is 4 KiB, dictionary size of 32 KiB or 64 KiB is good. If the
* data compresses extremely well, even 128 KiB may be useful.
*
* The MicroLZMA format and this encoder variant were made with the EROFS
* file system in mind. This format may be convenient in other embedded
* uses too where many small streams are needed. XZ Embedded includes a
* decoder for this format.
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param options Pointer to encoder options
*
* \return Possible lzma_ret values:
* - LZMA_STREAM_END: All good. Check the amounts of input used
* and output produced. Store the amount of input used
* (uncompressed size) as it needs to be known to decompress
* the data.
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR: In addition to the generic reasons for this
* error code, this may also be returned if there isn't enough
* output space (6 bytes) to create a valid MicroLZMA stream.
*/
extern LZMA_API(lzma_ret) lzma_microlzma_encoder(
lzma_stream *strm, const lzma_options_lzma *options)
lzma_nothrow;
/************
* Decoding *
************/
@@ -501,8 +648,8 @@ extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
/**
* This flag enables decoding of concatenated files with file formats that
* allow concatenating compressed files as is. From the formats currently
* supported by liblzma, only the .xz format allows concatenated files.
* Concatenated files are not allowed with the legacy .lzma format.
* supported by liblzma, only the .xz and .lz formats allow concatenated
* files. Concatenated files are not allowed with the legacy .lzma format.
*
* This flag also affects the usage of the `action' argument for lzma_code().
* When LZMA_CONCATENATED is used, lzma_code() won't return LZMA_STREAM_END
@@ -515,10 +662,40 @@ extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
#define LZMA_CONCATENATED UINT32_C(0x08)
/**
* This flag makes the threaded decoder report errors (like LZMA_DATA_ERROR)
* as soon as they are detected. This saves time when the application has no
* interest in a partially decompressed truncated or corrupt file. Note that
* due to timing randomness, if the same truncated or corrupt input is
* decompressed multiple times with this flag, a different amount of output
* may be produced by different runs, and even the error code might vary.
*
* When using LZMA_FAIL_FAST, it is recommended to use LZMA_FINISH to tell
* the decoder when no more input will be coming because it can help fast
* detection and reporting of truncated files. Note that in this situation
* truncated files might be diagnosed with LZMA_DATA_ERROR instead of
* LZMA_OK or LZMA_BUF_ERROR!
*
* Without this flag the threaded decoder will provide as much output as
* possible at first and then report the pending error. This default behavior
* matches the single-threaded decoder and provides repeatable behavior
* with truncated or corrupt input. There are a few special cases where the
* behavior can still differ like memory allocation failures (LZMA_MEM_ERROR).
*
* Single-threaded decoders currently ignore this flag.
*
* Support for this flag was added in liblzma 5.3.3alpha. Note that in older
* versions this flag isn't supported (LZMA_OPTIONS_ERROR) even by functions
* that ignore this flag in newer liblzma versions.
*/
#define LZMA_FAIL_FAST UINT32_C(0x20)
/**
* \brief Initialize .xz Stream decoder
*
* \param strm Pointer to properly prepared lzma_stream
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter. liblzma
* 5.2.3 and earlier don't allow 0 here and return
@@ -527,9 +704,10 @@ extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
* \param flags Bitwise-or of zero or more of the decoder flags:
* LZMA_TELL_NO_CHECK, LZMA_TELL_UNSUPPORTED_CHECK,
* LZMA_TELL_ANY_CHECK, LZMA_IGNORE_CHECK,
* LZMA_CONCATENATED
* LZMA_CONCATENATED, LZMA_FAIL_FAST
*
* \return - LZMA_OK: Initialization was successful.
* \return Possible lzma_ret values:
* - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR: Cannot allocate memory.
* - LZMA_OPTIONS_ERROR: Unsupported flags
* - LZMA_PROG_ERROR
@@ -540,11 +718,45 @@ extern LZMA_API(lzma_ret) lzma_stream_decoder(
/**
* \brief Decode .xz Streams and .lzma files with autodetection
* \brief Initialize multithreaded .xz Stream decoder
*
* This decoder autodetects between the .xz and .lzma file formats, and
* calls lzma_stream_decoder() or lzma_alone_decoder() once the type
* of the input file has been detected.
* The decoder can decode multiple Blocks in parallel. This requires that each
* Block Header contains the Compressed Size and Uncompressed size fields
* which are added by the multi-threaded encoder, see lzma_stream_encoder_mt().
*
* A Stream with one Block will only utilize one thread. A Stream with multiple
* Blocks but without size information in Block Headers will be processed in
* single-threaded mode in the same way as done by lzma_stream_decoder().
* Concatenated Streams are processed one Stream at a time; no inter-Stream
* parallelization is done.
*
* This function behaves like lzma_stream_decoder() when options->threads == 1
* and options->memlimit_threading <= 1.
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param options Pointer to multithreaded compression options
*
* \return Possible lzma_ret values:
* - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR: Cannot allocate memory.
* - LZMA_MEMLIMIT_ERROR: Memory usage limit was reached.
* - LZMA_OPTIONS_ERROR: Unsupported flags.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_stream_decoder_mt(
lzma_stream *strm, const lzma_mt *options)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode .xz, .lzma, and .lz (lzip) files with autodetection
*
* This decoder autodetects between the .xz, .lzma, and .lz file formats,
* and calls lzma_stream_decoder(), lzma_alone_decoder(), or
* lzma_lzip_decoder() once the type of the input file has been detected.
*
* Support for .lz was added in 5.4.0.
*
* If the flag LZMA_CONCATENATED is used and the input is a .lzma file:
* For historical reasons concatenated .lzma files aren't supported.
@@ -553,7 +765,8 @@ extern LZMA_API(lzma_ret) lzma_stream_decoder(
* as it doesn't support any decoder flags. It will return LZMA_STREAM_END
* after one .lzma stream.)
*
* \param strm Pointer to properly prepared lzma_stream
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter. liblzma
* 5.2.3 and earlier don't allow 0 here and return
@@ -562,9 +775,10 @@ extern LZMA_API(lzma_ret) lzma_stream_decoder(
* \param flags Bitwise-or of zero or more of the decoder flags:
* LZMA_TELL_NO_CHECK, LZMA_TELL_UNSUPPORTED_CHECK,
* LZMA_TELL_ANY_CHECK, LZMA_IGNORE_CHECK,
* LZMA_CONCATENATED
* LZMA_CONCATENATED, LZMA_FAIL_FAST
*
* \return - LZMA_OK: Initialization was successful.
* \return Possible lzma_ret values:
* - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR: Cannot allocate memory.
* - LZMA_OPTIONS_ERROR: Unsupported flags
* - LZMA_PROG_ERROR
@@ -577,18 +791,20 @@ extern LZMA_API(lzma_ret) lzma_auto_decoder(
/**
* \brief Initialize .lzma decoder (legacy file format)
*
* \param strm Pointer to properly prepared lzma_stream
* Valid `action' arguments to lzma_code() are LZMA_RUN and LZMA_FINISH.
* There is no need to use LZMA_FINISH, but it's allowed because it may
* simplify certain types of applications.
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter. liblzma
* 5.2.3 and earlier don't allow 0 here and return
* LZMA_PROG_ERROR; later versions treat 0 as if 1
* had been specified.
*
* Valid `action' arguments to lzma_code() are LZMA_RUN and LZMA_FINISH.
* There is no need to use LZMA_FINISH, but it's allowed because it may
* simplify certain types of applications.
*
* \return - LZMA_OK
* \return Possible lzma_ret values:
* - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR
*/
@@ -597,6 +813,66 @@ extern LZMA_API(lzma_ret) lzma_alone_decoder(
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize .lz (lzip) decoder (a foreign file format)
*
* This decoder supports the .lz format version 0 and the unextended .lz
* format version 1:
*
* - Files in the format version 0 were produced by lzip 1.3 and older.
* Such files aren't common but may be found from file archives
* as a few source packages were released in this format. People
* might have old personal files in this format too. Decompression
* support for the format version 0 was removed in lzip 1.18.
*
* - lzip 1.3 added decompression support for .lz format version 1 files.
* Compression support was added in lzip 1.4. In lzip 1.6 the .lz format
* version 1 was extended to support the Sync Flush marker. This extension
* is not supported by liblzma. lzma_code() will return LZMA_DATA_ERROR
* at the location of the Sync Flush marker. In practice files with
* the Sync Flush marker are very rare and thus liblzma can decompress
* almost all .lz files.
*
* Just like with lzma_stream_decoder() for .xz files, LZMA_CONCATENATED
* should be used when decompressing normal standalone .lz files.
*
* The .lz format allows putting non-.lz data at the end of a file after at
* least one valid .lz member. That is, one can append custom data at the end
* of a .lz file and the decoder is required to ignore it. In liblzma this
* is relevant only when LZMA_CONCATENATED is used. In that case lzma_code()
* will return LZMA_STREAM_END and leave lzma_stream.next_in pointing to
* the first byte of the non-.lz data. An exception to this is if the first
* 1-3 bytes of the non-.lz data are identical to the .lz magic bytes
* (0x4C, 0x5A, 0x49, 0x50; "LZIP" in US-ASCII). In such a case the 1-3 bytes
* will have been ignored by lzma_code(). If one wishes to locate the non-.lz
* data reliably, one must ensure that the first byte isn't 0x4C. Actually
* one should ensure that none of the first four bytes of trailing data are
* equal to the magic bytes because lzip >= 1.20 requires it by default.
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter.
* \param flags Bitwise-or of flags, or zero for no flags.
* All decoder flags listed above are supported
* although only LZMA_CONCATENATED and (in very rare
* cases) LZMA_IGNORE_CHECK are actually useful.
* LZMA_TELL_NO_CHECK, LZMA_TELL_UNSUPPORTED_CHECK,
* and LZMA_FAIL_FAST do nothing. LZMA_TELL_ANY_CHECK
* is supported for consistency only as CRC32 is
* always used in the .lz format.
*
* \return Possible lzma_ret values:
* - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR: Cannot allocate memory.
* - LZMA_OPTIONS_ERROR: Unsupported flags
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_lzip_decoder(
lzma_stream *strm, uint64_t memlimit, uint32_t flags)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Single-call .xz Stream decoder
*
@@ -606,9 +882,9 @@ extern LZMA_API(lzma_ret) lzma_alone_decoder(
* returned.
* \param flags Bitwise-or of zero or more of the decoder flags:
* LZMA_TELL_NO_CHECK, LZMA_TELL_UNSUPPORTED_CHECK,
* LZMA_IGNORE_CHECK, LZMA_CONCATENATED. Note that
* LZMA_TELL_ANY_CHECK is not allowed and will
* return LZMA_PROG_ERROR.
* LZMA_IGNORE_CHECK, LZMA_CONCATENATED,
* LZMA_FAIL_FAST. Note that LZMA_TELL_ANY_CHECK
* is not allowed and will return LZMA_PROG_ERROR.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
@@ -616,13 +892,14 @@ extern LZMA_API(lzma_ret) lzma_alone_decoder(
* *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].
* \param[out] out Beginning of the output buffer
* \param[out] out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if decoding 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.
* \return Possible lzma_ret values:
* - LZMA_OK: Decoding was successful.
* - LZMA_FORMAT_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_DATA_ERROR
@@ -642,3 +919,50 @@ extern LZMA_API(lzma_ret) lzma_stream_buffer_decode(
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 lzma_attr_warn_unused_result;
/**
* \brief MicroLZMA decoder
*
* See lzma_microlzma_encoder() for more information.
*
* The lzma_code() usage with this decoder is completely normal. The
* special behavior of lzma_code() applies to lzma_microlzma_encoder() only.
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param comp_size Compressed size of the MicroLZMA stream.
* The caller must somehow know this exactly.
* \param uncomp_size Uncompressed size of the MicroLZMA stream.
* If the exact uncompressed size isn't known, this
* can be set to a value that is at most as big as
* the exact uncompressed size would be, but then the
* next argument uncomp_size_is_exact must be false.
* \param uncomp_size_is_exact
* If true, uncomp_size must be exactly correct.
* This will improve error detection at the end of
* the stream. If the exact uncompressed size isn't
* known, this must be false. uncomp_size must still
* be at most as big as the exact uncompressed size
* is. Setting this to false when the exact size is
* known will work but error detection at the end of
* the stream will be weaker.
* \param dict_size LZMA dictionary size that was used when
* compressing the data. It is OK to use a bigger
* value too but liblzma will then allocate more
* memory than would actually be required and error
* detection will be slightly worse. (Note that with
* the implementation in XZ Embedded it doesn't
* affect the memory usage if one specifies bigger
* dictionary than actually required.)
*
* \return Possible lzma_ret values:
* - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_microlzma_decoder(
lzma_stream *strm, uint64_t comp_size,
uint64_t uncomp_size, lzma_bool uncomp_size_is_exact,
uint32_t dict_size) lzma_nothrow;