Power-Programmierung/CD2.mdf/doc/mir/dosify.c

C/C++ Source or Header | 1992-07-02 | 6.0 KB | 187 lines

/*
 *  usage:  dosify file_name[s]
 *
 *  DOSIFY  Replaces a UNIX-style file with a copy in which each line feed
 *          is preceded by one carriage return, and the file ends with
 *          one CTL-Z byte.  Use this program on a file in which the MORE
 *          command produces a skewed listing that fails to go back to the
 *          left margin for new lines.
 *
 *  input:  Any printable ASCII text file[s].
 *
 *  output: The same file, with the same name, with DOS conventional line
 *          ends and end of file.
 *
 *  writeup: MIR TUTORIAL ONE, topic 5
 *
 *  Written:    Douglas Lowry   Jan 09 92
 *  Modified:   Douglas Lowry   May 23 92  touch-up
 *              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:     [e-mail]
 *
 *    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.  [phone]   FAX  [phone]
 *
 *  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>

#define  repeat  for(;;)

typedef     enum bool
    { FALSE = 0, TRUE = 1 }  Bool ;

    Bool    process();
    void    Usage_() ;
    char    *Cmdname_()     { return( "dosify" ) ; }

/*
 *  MAIN -
 */

main( argc, argv )
    int     argc;
    char    **argv;
{
    FILE    *fp_in, *fp_out ;
    Bool    okay ;
    char    fname[16],
            c10 ;
    int     file ;

    c10 = argv[1][0] ;
    if( argc == 1 || c10 == '-' || c10 == '/' || c10 == '?' )
        Usage_();
    sprintf( fname, "%d.999", getpid() );

    for( file = 1; file < argc ; file++ )
    {
        if(( fp_in = fopen( argv[ file ], "rb" )) == NULL )
        {
            fprintf( stderr, "Can't open file %s\n", argv[ file ] );
            continue ;
        }

        if(( fp_out = fopen( fname, "wb" )) == NULL )
        {
            fprintf( stderr, "Can't open temporary file %s\n", fname );
            fclose( fp_in ) ;
            continue ;
        }
        fprintf( stderr, "Dosifying %s\n", argv[ file ] ) ;

        okay = process( fp_in, fp_out ) ;
        if( fclose( fp_in ) || fclose( fp_out ))
        {
            fprintf( stderr, "Problem closing %s\n", argv[ file ] );
            okay = FALSE ;
        }

        if( okay )
        {
            unlink( argv[ file ] ) ;
            if( rename( fname,  argv[ file ] ))
                fprintf( stderr, "File %s okay, but has temporary name %s\n",
                            argv[ file ], fname ) ;
            else
                fprintf( stderr, "\t\t...Completed okay.\n" ) ;
        }
    }

    exit( 0 );
}
    void
Usage_()
{
    fprintf( stderr, "\nusage:  %s file_name[s]\n\n\
        Replaces a UNIX-style file with a copy in which each line feed\n\
        is preceded by one carriage return, and the file ends with\n\
        one CTL-Z byte.  Use this program on a file in which the MORE\n\
        command produces a skewed listing that fails to go back to the\n",
                Cmdname_() );
    fprintf( stderr, "        left margin for new lines.\n\n\
input:  Any printable ASCII text file[s].\n\n\
output: The same file, with the same name, with DOS conventional line\n\
        ends and end of file.\n\n\
writeup: MIR TUTORIAL ONE, topic 5\n\n" ) ;
    exit( 1 ) ;
}
/*
 *  PROCESS
 */
    Bool
process( fp_in, fp_out )
    FILE    *fp_in, *fp_out ;
{
    int     ch ;
    Bool    foul_up ;

    foul_up = FALSE ;

    repeat
    {
        if(( ch = fgetc( fp_in )) == EOF )
        {
            if( feof( fp_in ))
                break ;
        }

        if( ch == '\n' )
            fputc( '\015', fp_out ) ;
        if( ch != '\015' && ch != '\032' )
        {
            if( fputc( ch, fp_out ) != ch )
                foul_up = TRUE ;
        }
        if( foul_up )
            return( FALSE );
    }

    fputc( '\032', fp_out );
    return( TRUE ) ;
}