XZ Utils 5.3.5beta
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Compresses or uncompresses a file. More...
#include "private.h"
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enum | coder_init_ret { CODER_INIT_NORMAL , CODER_INIT_PASSTHRU , CODER_INIT_ERROR } |
Return value type for coder_init(). More... | |
Functions | |
void | coder_set_check (lzma_check new_check) |
Set the integrity check type used when compressing. More... | |
static void | forget_filter_chain (void) |
void | coder_set_preset (uint32_t new_preset) |
Set preset number. More... | |
void | coder_set_extreme (void) |
Enable extreme mode. More... | |
void | coder_add_filter (lzma_vli id, void *options) |
Add a filter to the custom filter chain. More... | |
static void | lzma_attribute ((__noreturn__)) |
void | coder_set_compression_settings (void) |
static enum coder_init_ret | coder_init (file_pair *pair) |
static void | split_block (uint64_t *block_remaining, uint64_t *next_block_remaining, size_t *list_pos) |
static bool | coder_write_output (file_pair *pair) |
static bool | coder_normal (file_pair *pair) |
Compress or decompress using liblzma. More... | |
static bool | coder_passthru (file_pair *pair) |
void | coder_run (const char *filename) |
Compress or decompress the given file. More... | |
void | coder_free (void) |
Free the memory allocated for the coder and kill the worker threads. More... | |
Variables | |
enum operation_mode | opt_mode = MODE_COMPRESS |
enum format_type | opt_format = FORMAT_AUTO |
bool | opt_auto_adjust = true |
bool | opt_single_stream = false |
If true, stop after decoding the first stream. More... | |
uint64_t | opt_block_size = 0 |
uint64_t * | opt_block_list = NULL |
static lzma_stream | strm = LZMA_STREAM_INIT |
Stream used to communicate with liblzma. More... | |
static lzma_filter | filters [LZMA_FILTERS_MAX+1] |
Filters needed for all encoding all formats, and also decoding in raw data. More... | |
static io_buf | in_buf |
Input and output buffers. More... | |
static io_buf | out_buf |
static uint32_t | filters_count = 0 |
Number of filters. Zero indicates that we are using a preset. More... | |
static uint32_t | preset_number = LZMA_PRESET_DEFAULT |
Number of the preset (0-9) More... | |
static lzma_check | check |
Integrity check type. More... | |
static bool | check_default = true |
This becomes false if the –check=CHECK option is used. More... | |
static bool | allow_trailing_input |
Compresses or uncompresses a file.
enum coder_init_ret |
Return value type for coder_init().
void coder_set_check | ( | lzma_check | new_check | ) |
Set the integrity check type used when compressing.
References check, and check_default.
void coder_set_preset | ( | uint32_t | new_preset | ) |
Set preset number.
References preset_number.
void coder_set_extreme | ( | void | ) |
Enable extreme mode.
References LZMA_PRESET_EXTREME, and preset_number.
void coder_add_filter | ( | lzma_vli | id, |
void * | options | ||
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Add a filter to the custom filter chain.
References filters_count, LZMA_FILTERS_MAX, and message_fatal().
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Detect the input file type (for now, this done only when decompressing), and initialize an appropriate coder. Return value indicates if a normal liblzma-based coder was initialized (CODER_INIT_NORMAL), if passthru mode should be used (CODER_INIT_PASSTHRU), or if an error occurred (CODER_INIT_ERROR).
References allow_trailing_input, LZMA_PROG_ERROR, and opt_mode.
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Resolve conflicts between opt_block_size and opt_block_list in single threaded mode. We want to default to opt_block_list, except when it is larger than opt_block_size. If this is the case for the current Block at *list_pos, then we break into smaller Blocks. Otherwise advance to the next Block in opt_block_list, and break apart if needed.
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Compress or decompress using liblzma.
References LZMA_FINISH, LZMA_RUN, and file_pair::src_eof.
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Copy from input file to output file without processing the data in any way. This is used only when trying to decompress unrecognized files with –decompress –stdout –force, so the output is always stdout.
References lzma_stream::avail_in, in_buf, io_read(), io_write(), message_progress_update(), strm, lzma_stream::total_in, lzma_stream::total_out, and user_abort.
void coder_run | ( | const char * | filename | ) |
Compress or decompress the given file.
References filename, io_open_src(), message_filename(), and opt_mode.
void coder_free | ( | void | ) |
Free the memory allocated for the coder and kill the worker threads.
References lzma_end(), and strm.
enum operation_mode opt_mode = MODE_COMPRESS |
Operation mode of the command line tool. This is set in args.c and read in several files.
Referenced by coder_init(), coder_run(), message_filename(), message_mem_needed(), and mytime_get_flush_timeout().
enum format_type opt_format = FORMAT_AUTO |
File format to use when encoding or what format(s) to accept when decoding. This is a global because it's needed also in suffix.c. This is set in args.c.
Referenced by list_file(), and uncompressed_name().
bool opt_auto_adjust = true |
If true, the compression settings are automatically adjusted down if they exceed the memory usage limit.
bool opt_single_stream = false |
If true, stop after decoding the first stream.
uint64_t opt_block_size = 0 |
If non-zero, start a new .xz Block after every opt_block_size bytes of input. This has an effect only when compressing to the .xz format.
uint64_t* opt_block_list = NULL |
This is non-NULL if –block-list was used. This contains the Block sizes as an array that is terminated with 0.
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Stream used to communicate with liblzma.
Referenced by coder_free(), coder_passthru(), lzma_code(), lzma_easy_encoder(), lzma_end(), lzma_filters_update(), lzma_get_check(), lzma_get_progress(), lzma_memlimit_get(), lzma_memlimit_set(), lzma_memusage(), lzma_strm_init(), and message_progress_start().
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Filters needed for all encoding all formats, and also decoding in raw data.
Referenced by get_options(), lzma_filters_update(), lzma_stream_encoder_mt_memusage(), and message_filters_show().
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Input and output buffers.
Referenced by coder_passthru().
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Number of filters. Zero indicates that we are using a preset.
Referenced by coder_add_filter().
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Number of the preset (0-9)
Referenced by coder_set_extreme(), and coder_set_preset().
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Integrity check type.
Referenced by coder_set_check(), lzma_check_finish(), lzma_check_init(), lzma_check_update(), lzma_easy_encoder(), lzma_sha256_finish(), lzma_sha256_init(), and lzma_sha256_update().
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This becomes false if the –check=CHECK option is used.
Referenced by coder_set_check().
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Indicates if unconsumed input is allowed to remain after decoding has successfully finished. This is set for each file in coder_init().
Referenced by coder_init().