compress.c File Reference

#include <limits.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <ctype.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utime.h>
#include <stdio.h>

Include dependency graph for compress.c:

Go to the source code of this file.

Defines
#define	AZTEC86   1
#define	min(a, b)   ((a>b) ? b : a)
#define	SACREDMEM   0
#define	USERMEM   450000
#define	REGISTER   register
#define	DOTZ   ".Z"
#define	DEFAULTBITS   13
#define	BITS   16
#define	PBITS   16
#define	HSIZE   69001
#define	BIT_MASK   0x1f
#define	BLOCK_MASK   0x80
#define	INIT_BITS   9
#define	ARGVAL()   (*++(*argv) || (--argc && *++argv))
#define	MAXCODE(n_bits)   ((1 << (n_bits)) - 1)
#define	HTABSIZE   ((size_t)(HSIZE*sizeof(count_int)))
#define	CODETABSIZE   ((size_t)(HSIZE*sizeof(unsigned short)))
#define	htabof(i)   htab[i]
#define	codetabof(i)   codetab[i]
#define	tab_prefixof(i)   codetabof(i)
#define	tab_suffixof(i)   ((char_type *)(htab))[i]
#define	de_stack   ((char_type *)&tab_suffixof(1<<BITS))
#define	CHECK_GAP   10000
#define	FIRST   257
#define	CLEAR   256
Typedefs
typedef long int	code_int
typedef long int	count_int
typedef unsigned char	char_type
Functions
	_PROTOTYPE (int main,(int argc, char **argv))
	_PROTOTYPE (void Usage,(void))
	_PROTOTYPE (void onintr,(int dummy))
	_PROTOTYPE (void output,(code_int code))
	_PROTOTYPE (int foreground,(void))
	_PROTOTYPE (code_int getcode,(void))
	_PROTOTYPE (void copystat,(char *ifname, char *ofname))
	_PROTOTYPE (void cl_hash,(count_int hsize))
	_PROTOTYPE (void prratio,(FILE *stream, long int num, long int den))
void	Usage ()
int	main (int argc, char **argv)
void	compress ()
void	output (code_int code)
void	decompress ()
code_int	getcode ()
void	writeerr ()
void	copystat (char *ifname, char *ofname)
int	foreground ()
void	onintr (int dummy)
void	oops (int dummy)
void	cl_block ()
void	cl_hash (REGISTER count_int hsize)
void	prratio (FILE *stream, long int num, long int den)
void	version ()
Variables
char_type	magic_header [] = "\037\235"
int	n_bits
int	maxbits = DEFAULTBITS
code_int	maxcode
code_int	maxmaxcode = 1 << BITS
count_int *	htab
unsigned short *	codetab
code_int	hsize = HSIZE
count_int	fsize
code_int	free_ent = 0
int	exit_stat = 0
int	nomagic = 0
int	zcat_flg = 0
int	quiet = 0
int	block_compress = BLOCK_MASK
int	clear_flg = 0
long int	ratio = 0
count_int	checkpoint = CHECK_GAP
int	force = 0
char	ofname [100]
void(*	bgnd_flag )()
int	do_decomp = 0
static int	offset
long int	in_count = 1
long int	bytes_out
long int	out_count = 0
static char	buf [BITS]
char_type	lmask [9] = {0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80, 0x00}
char_type	rmask [9] = {0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff}

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Define Documentation

#define ARGVAL (   )     (*++(*argv) || (--argc && *++argv))

Definition at line 172 of file compress.c. Referenced by main().

#define AZTEC86   1

Definition at line 52 of file compress.c.

#define BIT_MASK   0x1f

Definition at line 154 of file compress.c.

#define BITS   16

Definition at line 83 of file compress.c.

#define BLOCK_MASK   0x80

Definition at line 155 of file compress.c.

#define CHECK_GAP   10000

Definition at line 258 of file compress.c. Referenced by cl_block(), and compress().

#define CLEAR   256

Definition at line 265 of file compress.c.

#define codetabof (  i   )     codetab[i]

Definition at line 195 of file compress.c. Referenced by compress().

#define CODETABSIZE   ((size_t)(HSIZE*sizeof(unsigned short)))

Definition at line 191 of file compress.c. Referenced by main().

#define de_stack   ((char_type *)&tab_suffixof(1<<BITS))

Definition at line 215 of file compress.c.

#define DEFAULTBITS   13

Definition at line 79 of file compress.c.

#define DOTZ   ".Z"

Definition at line 73 of file compress.c.

#define FIRST   257

Definition at line 264 of file compress.c. Referenced by chkdev(), cl_block(), compress(), getone(), and markzone().

#define HSIZE   69001

Definition at line 114 of file compress.c.

#define htabof (  i   )     htab[i]

Definition at line 194 of file compress.c. Referenced by compress().

#define HTABSIZE   ((size_t)(HSIZE*sizeof(count_int)))

Definition at line 190 of file compress.c. Referenced by main().

#define INIT_BITS   9

Definition at line 159 of file compress.c. Referenced by compress(), decompress(), getcode(), and output().

#define MAXCODE (  n_bits   )     ((1 << (n_bits)) - 1)

Definition at line 181 of file compress.c. Referenced by compress(), decompress(), getcode(), and output().

#define min (  a, b   )     ((a>b) ? b : a)

Definition at line 54 of file compress.c.

#define PBITS   16

Definition at line 88 of file compress.c.

#define REGISTER   register

Definition at line 72 of file compress.c. Referenced by cl_block(), cl_hash(), compress(), decompress(), getcode(), output(), and prratio().

#define SACREDMEM   0

Definition at line 65 of file compress.c.

#define tab_prefixof (  i   )     codetabof(i)

Definition at line 209 of file compress.c. Referenced by decompress().

#define tab_suffixof (  i   )     ((char_type *)(htab))[i]

Definition at line 214 of file compress.c. Referenced by decompress().

#define USERMEM   450000

Definition at line 69 of file compress.c.

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Typedef Documentation

typedef unsigned char char_type

Definition at line 149 of file compress.c.

typedef long int code_int

Definition at line 134 of file compress.c.

typedef long int count_int

Definition at line 143 of file compress.c.

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Function Documentation

_PROTOTYPE (  void  prratio, (FILE *stream, long int num, long int den)  )

_PROTOTYPE (  void  cl_hash, (count_int hsize)  )

_PROTOTYPE (  void  copystat, (char *ifname, char *ofname)  )

_PROTOTYPE (  code_int  getcode, (void)  )

_PROTOTYPE (  int  foreground, (void)  )

_PROTOTYPE (  void  output, (code_int code)  )

_PROTOTYPE (  void  onintr, (int dummy)  )

_PROTOTYPE (  void  Usage, (void)  )

_PROTOTYPE (  int  main, (int argc, char **argv)  )

void cl_block (   )

Definition at line 1459 of file compress.c. References CHECK_GAP, checkpoint, cl_hash(), CLEAR, clear_flg, debug, FIRST, fprintf(), output, prratio(), ratio, REGISTER, and verbose. Referenced by compress().

void cl_hash (  REGISTER count_int  hsize  )

Definition at line 1501 of file compress.c. References htab, j, k, m1, memset(), and REGISTER. Referenced by cl_block(), and compress().

void compress (   )

Definition at line 740 of file compress.c. References block_compress, c, CHECK_GAP, checkpoint, cl_block(), cl_hash(), clear_flg, codetabof, EOF, ferror, FIRST, free_ent, getc, hsize, htabof, i, INIT_BITS, L, long(), magic_header, maxbits, MAXCODE, maxcode, maxmaxcode, n_bits, nomagic, output, putc, ratio, REGISTER, stdin, stdout, and writeerr().

void copystat (  char *  ifname, char *  ofname )

Definition at line 1347 of file compress.c. References chmod, chown, close, do_decomp, exit_stat, fflush(), fileno(), force, fprintf(), ofname, perror(), quiet, S_IFMT, S_IFREG, stat::st_atime, stat::st_gid, stat::st_mode, stat::st_mtime, stat::st_nlink, stat::st_uid, stat, stdout, time_t, timep, unlink, and utime.

void decompress (   )

Definition at line 1034 of file compress.c. References INIT_BITS, MAXCODE, maxcode, n_bits, REGISTER, stackp, tab_prefixof, and tab_suffixof. Referenced by main().

int foreground (   )

Definition at line 1424 of file compress.c. References bgnd_flag, and isatty.

code_int getcode (   )

Definition at line 1126 of file compress.c. References bits, BITS, bp, clear_flg, fread(), free_ent, INIT_BITS, maxbits, MAXCODE, maxcode, maxmaxcode, n_bits, REGISTER, size, and stdin.

int main (  int  argc, char **  argv )

Definition at line 289 of file compress.c. References ARGVAL, atoi, bgnd_flag, codetab, CODETABSIZE, cp, debug, DEBUG, exit(), fprintf(), htab, HTABSIZE, malloc(), maxbits, nextarg(), NULL, overwrite(), SIG_IGN, SIGINT, signal(), SIGSEGV, stderr, stdin, stdout, strcmp, strrchr(), tempname, Usage(), and version.

void onintr (  int  dummy  )

Definition at line 1441 of file compress.c. References exit(), ofname, SIG_IGN, SIGINT, signal(), and unlink.

void oops (  int  dummy  )

Definition at line 1449 of file compress.c. References do_decomp, exit(), fprintf(), ofname, SIG_IGN, signal(), SIGSEGV, and unlink.

void output (  code_int  code  )

Definition at line 887 of file compress.c. References bits, bp, clear_flg, col(), debug, ferror, fflush(), fprintf(), free_ent, fwrite(), INIT_BITS, maxbits, MAXCODE, maxcode, maxmaxcode, n_bits, putc, REGISTER, stderr, stdout, verbose, and writeerr().

void prratio (  FILE *  stream, long int  num, long int  den )

Definition at line 1565 of file compress.c. References fprintf(), int(), L, putc, and REGISTER. Referenced by cl_block().

void Usage (   )

Definition at line 238 of file compress.c. References fprintf(), and stderr.

void version (   )

Definition at line 1586 of file compress.c. References BITS, and fprintf().

void writeerr (   )

Definition at line 1340 of file compress.c. References exit(), ofname, perror(), and unlink. Referenced by compress(), and output().

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Variable Documentation

void(* bgnd_flag)()

Definition at line 280 of file compress.c. Referenced by foreground(), and main().

int block_compress = BLOCK_MASK

Definition at line 255 of file compress.c. Referenced by compress().

char buf[BITS] [static]

Definition at line 881 of file compress.c.

long int bytes_out

Definition at line 721 of file compress.c.

count_int checkpoint = CHECK_GAP

Definition at line 259 of file compress.c. Referenced by cl_block(), and compress().

int clear_flg = 0

Definition at line 256 of file compress.c. Referenced by cl_block(), compress(), getcode(), and output().

unsigned short* codetab

Definition at line 189 of file compress.c. Referenced by main().

int do_decomp = 0

Definition at line 286 of file compress.c. Referenced by copystat(), and oops().

int exit_stat = 0

Definition at line 219 of file compress.c. Referenced by copystat().

int force = 0

Definition at line 267 of file compress.c.

code_int free_ent = 0

Definition at line 218 of file compress.c. Referenced by compress(), getcode(), and output().

count_int fsize

Definition at line 198 of file compress.c. Referenced by sendfile().

code_int hsize = HSIZE

Definition at line 197 of file compress.c. Referenced by compress().

count_int* htab

Definition at line 188 of file compress.c. Referenced by cl_hash(), and main().

long int in_count = 1

Definition at line 720 of file compress.c. Referenced by diskio().

char_type lmask[9] = {0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80, 0x00}

Definition at line 884 of file compress.c. Referenced by inflate_fast().

char_type magic_header[] = "\037\235"

Definition at line 151 of file compress.c. Referenced by compress().

int maxbits = DEFAULTBITS

Definition at line 175 of file compress.c. Referenced by compress(), getcode(), main(), and output().

code_int maxcode

Definition at line 176 of file compress.c. Referenced by compress(), decompress(), getcode(), and output().

code_int maxmaxcode = 1 << BITS

Definition at line 177 of file compress.c. Referenced by compress(), getcode(), and output().

int n_bits

Definition at line 174 of file compress.c. Referenced by compress(), decompress(), getcode(), and output().

int nomagic = 0

Definition at line 247 of file compress.c. Referenced by compress().

int offset [static]

Definition at line 719 of file compress.c.

char ofname[100]

Definition at line 268 of file compress.c. Referenced by copystat(), encode(), main(), makename(), onintr(), oops(), and writeerr().

long int out_count = 0

Definition at line 722 of file compress.c.

int quiet = 0

Definition at line 249 of file compress.c. Referenced by copystat().

long int ratio = 0

Definition at line 257 of file compress.c. Referenced by cl_block(), compress(), do_extract_currentfile(), and do_list().

char_type rmask[9] = {0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff}

Definition at line 885 of file compress.c.

int zcat_flg = 0

Definition at line 248 of file compress.c.

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