home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Power Programmierung
/
Power-Programmierung CD 2 (Tewi)(1994).iso
/
doc
/
mir
/
cpb.c
< prev
next >
Wrap
Text File
|
1992-07-02
|
5KB
|
161 lines
/*
* Usage - cpb byte_count start_byte input_file output_file
*
* CPB - Copy bytes... Copy any portion of any file to a new file.
* Start at a specified byte, copy a specified byte count.
* Standard output may not be used because DOS drops carriage
* returns and CTL-Z.
*
* input: Any file whatsoever.
*
* output: Portion of the same file.
*
* writeup: MIR TUTORIAL ONE, topic 4
*
* Written: Douglas Lowry Oct 11 91
* Modified: Douglas Lowry Jan 07 92
* Copyright (C) 1992 Marpex Inc.
*
* The MIR (Mass Indexing and Retrieval) Tutorials explain detailed
* usage and co-ordination of the MIR family of programs to analyze,
* prepare and index databases (small through gigabyte size), and
* how to build integrated retrieval software around the MIR search
* engine. The fifth of the five MIR tutorial series explains how
* to extend indexing capability into leading edge search-related
* technologies. For more information, GO IBMPRO on CompuServe;
* MIR files are in the DBMS library. The same files are on the
* Canada Remote Systems BBS. A diskette copy of the Introduction
* is available by mail ($10 US... check, Visa or Mastercard);
* diskettes with Introduction, Tutorial ONE software and the
* shareware Tutorial ONE text cost $29. Shareware registration
* for a tutorial is also $29.
*
* E-mail...
* Compuserve 71431,1337
* Internet doug.lowry%canrem.com
* UUCP canrem!doug.lowry
* Others: doug.lowry@canrem.uucp
*
* FAX... 416 963-5677
*
* "Snail mail"... Douglas Lowry, Ph.D.
* Marpex Inc.
* 5334 Yonge Street, #1102
* North York, Ontario
* Canada M2N 6M2
*
* Related database consultation and preparation services are
* available through:
* Innotech Inc., 2001 Sheppard Avenue E., Suite #118,
* North York, Ontario Canada M2J 4Z7
* Tel. 416 492-3838 FAX 416 492-3843
*
* This program is free software; you may redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* (file 05LICENS) along with this program; if not, write to the
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
* USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#define repeat for(;;)
/*
* declarations
*/
typedef enum _bool
{ FALSE = 0, TRUE = 1 } Bool;
void Usage_(), process();
char *Cmdname_() { return( "cpb" ); }
/*
* MAIN
*/
main( argc, argv )
int argc;
char **argv;
{
FILE *fp, *fp_out ;
char c ;
long byte_ct, start_at, i ;
if( argc != 5 || !isdigit( argv[1][0] ))
Usage_() ;
if(( fp = fopen( argv[3], "rb" )) == NULL )
{
fprintf( stderr, "\nUnable to open file %s.\n", argv[3] );
Usage_();
}
if(( fp_out = fopen( argv[4], "wb" )) == NULL )
{
fprintf( stderr, "\nUnable to open file %s.\n", argv[4] );
Usage_();
}
byte_ct = atol( argv[1] );
start_at = atol( argv[2] );
if( start_at )
{
if( fseek( fp, start_at, SEEK_SET ))
{
fprintf( stderr, "Unable to position %s to %ld\n",
argv[3], start_at );
Usage_() ;
}
}
for( i = 0 ; i < byte_ct ; i++ )
{
c = fgetc( fp ) ;
if( feof( fp ))
break ;
fputc( c, fp_out );
if( ferror( fp_out ))
{
fprintf( stderr, "FATAL write problem\n\n" );
exit( 1 ) ;
}
}
fclose( fp );
fclose( fp_out );
exit( 0 );
}
/*
* Usage
*/
void
Usage_()
{
fprintf( stderr,
"\nUsage: %s byte_count start_byte input_file output_file\n\n\
Copy bytes... Copy any portion of any file to a new file.\n\
Start at a specified byte, copy a specified byte count.\n\n",
Cmdname_() );
fprintf( stderr,
" Standard output may not be used because DOS drops carriage\n\
returns and CTL-Z.\n\n\
input: Any file whatsoever.\n\n\
output: Portion of the same file.\n\n\
writeup: MIR TUTORIAL ONE, topic 4\n\n" ) ;
exit( 1 ) ;
}