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/*
* file_mod.c -- Trivial module for reading simple, plain files
*
* Copyright (c) 1997 by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "stream.h"
/***************************** Prototypes *****************************/
static int file_open( const char *name );
static long file_fillbuf( void *buf );
static int file_skip( long cnt );
static int file_close( void );
/************************* End of Prototypes **************************/
#define MAXBUF (32*1024)
/* definition of the module structure */
MODULE file_mod = {
"file", /* name */
MAXBUF, /* maxbuf (arbitrary) */
file_open,
file_fillbuf,
file_skip,
file_close,
MOD_REST_INIT
};
static int fd; /* the fd for the file */
static int file_open( const char *name )
{
/* strip off "local:" prefix, if any */
if (strncmp( name, "local:", 6 ) == 0)
name += 6;
fd = open( name, O_RDONLY );
return( fd < 0 ? -1 : 0 );
}
static long file_fillbuf( void *buf )
{
return( read( fd, buf, MAXBUF ) );
}
static int file_skip( long cnt )
{
return( lseek( fd, cnt, SEEK_CUR ) );
}
static int file_close( void )
{
return( close( fd ) );
}
/* Local Variables: */
/* tab-width: 4 */
/* End: */
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