/build/buildd/xz-utils-4.999.9beta+20100527/src/xzdec/xzdec.c File Reference

Simple single-threaded tool to uncompress .xz or .lzma files. More...

#include "sysdefs.h"
#include "lzma.h"
#include <stdarg.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include "getopt.h"
#include "tuklib_progname.h"
#include "tuklib_exit.h"

Defines
#define	TOOL_FORMAT   "xz"
Functions
static void	lzma_attribute ((format(printf, 1, 2)))
static void	lzma_attribute ((noreturn))
static void	memlimit_set_percentage (uint32_t percentage)
static void	memlimit_set (uint64_t new_memlimit)
static void	memlimit_init (void)
static uint64_t	str_to_uint64 (const char *value, uint64_t max)
	Convert a string to uint64_t.
static void	parse_options (int argc, char **argv)
	Parses command line options.
static void	uncompress (lzma_stream *strm, FILE *file, const char *filename)
int	main (int argc, char **argv)
Variables
static uint64_t	memlimit
	Number of bytes to use memory at maximum.
static uint64_t	total_ram
	Total amount of physical RAM.
static unsigned int	display_errors = 2

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Detailed Description

Simple single-threaded tool to uncompress .xz or .lzma files.

---

Function Documentation

static void memlimit_set_percentage

(

uint32_t

percentage

)

[static]

Find out the amount of physical memory (RAM) in the system, and set the memory usage limit to the given percentage of RAM.

References memlimit, and total_ram.

Referenced by parse_options().

static void memlimit_set

(

uint64_t

new_memlimit

)

[static]

Set the memory usage limit to give number of bytes. Zero is a special value to indicate the default limit.

References memlimit, and total_ram.

Referenced by memlimit_init(), and parse_options().

static void memlimit_init

(

void

)

[static]

Get the total amount of physical RAM and set the memory usage limit to the default value.

References lzma_physmem(), memlimit_set(), and total_ram.

static uint64_t str_to_uint64	(	const char *	value,
		uint64_t	max
	)			[static]

Convert a string to uint64_t.

This is rudely copied from src/xz/util.c and modified a little. :-(

Parameters:

max

Return value when the string "max" was specified.

static void parse_options	(	int	argc,
		char **	argv
	)			[static]

Parses command line options.

References display_errors, memlimit_set(), memlimit_set_percentage(), and str_to_uint64().

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Variable Documentation

uint64_t memlimit [static]

Number of bytes to use memory at maximum.

Referenced by memlimit_set(), and memlimit_set_percentage().

uint64_t total_ram [static]

Total amount of physical RAM.

Referenced by memlimit_init(), memlimit_set(), and memlimit_set_percentage().

unsigned int display_errors = 2 [static]

Error messages are suppressed if this is zero, which is the case when --quiet has been given at least twice.

Referenced by parse_options().