file/src/compress.c File Reference

#include "file.h"
#include "magic.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>

Go to the source code of this file.

Functions
	FILE_RCSID ("@(#)$Id: compress.c,v 1.42 2005/03/06 05:58:22 christos Exp $") private struct
private ssize_t	swrite (int fd, const void *buf, size_t n)
private ssize_t	sread (int fd, void *buf, size_t n)
private size_t	uncompressbuf (struct magic_set *ms, int fd, size_t method, const unsigned char *old, unsigned char **newch, size_t n)
protected int	file_zmagic (struct magic_set *ms, int fd, const unsigned char *buf, size_t nbytes)
protected int	file_pipe2file (struct magic_set *ms, int fd, const void *startbuf, size_t nbytes)
Variables
	compr []
private int	ncompr = sizeof(compr) / sizeof(compr[0])

---

Function Documentation

protected int file_pipe2file	(	struct magic_set *	ms,
		int	fd,
		const void *	startbuf,
		size_t	nbytes
	)

Definition at line 190 of file compress.c.

References errno, file_badseek(), file_error(), SEEK_SET, sread(), and swrite().

FILE_RCSID	(	"@(#)$Id: compress.	c,
		v 1.42 2005/03/06 05:58:22 christos Exp $"
	)

Definition at line 53 of file compress.c.

protected int file_zmagic	(	struct magic_set *	ms,
		int	fd,
		const unsigned char *	buf,
		size_t	nbytes
	)

Definition at line 101 of file compress.c.

References compr, file_buffer(), file_printf(), magic_set::flags, and uncompressbuf().

private ssize_t sread	(	int	fd,
		void *	buf,
		size_t	n
	)

Definition at line 167 of file compress.c.

References errno.

Referenced by file_pipe2file(), and uncompressbuf().

private ssize_t swrite	(	int	fd,
		const void *	buf,
		size_t	n
	)

Definition at line 142 of file compress.c.

References errno.

Referenced by file_pipe2file(), and uncompressbuf().

private size_t uncompressbuf	(	struct magic_set *	ms,
		int	fd,
		size_t	method,
		const unsigned char *	old,
		unsigned char **	newch,
		size_t	n
	)

Definition at line 326 of file compress.c.

References compr, errno, EXIT_FAILURE, file_error(), HOWMANY, SEEK_SET, sread(), and swrite().

Referenced by file_zmagic().

---

Variable Documentation

compr[]

Initial value:

 {
        { "\037\235", 2, { "gzip", "-cdq", NULL }, 1 },         
        
        { "\037\235", 2, { "uncompress", "-c", NULL }, 1 },     
        { "\037\213", 2, { "gzip", "-cdq", NULL }, 1 },         
        { "\037\236", 2, { "gzip", "-cdq", NULL }, 1 },         
        { "\037\240", 2, { "gzip", "-cdq", NULL }, 1 },         
        
        { "\037\036", 2, { "gzip", "-cdq", NULL }, 0 },         
        { "PK\3\4",   4, { "gzip", "-cdq", NULL }, 1 },         
                                            
        { "BZh",      3, { "bzip2", "-cd", NULL }, 1 },         
}

Definition at line 66 of file compress.c.

Referenced by file_zmagic(), and uncompressbuf().

private int ncompr = sizeof(compr) / sizeof(compr[0])

Definition at line 83 of file compress.c.