Cat & Split

/*

 * Copyright (c) 2005 by Romuald DELAVERGNE

 * It can be redistributed under the terms of the GNU General Public License.

*/

#include <stdlib.h>

#include <stdio.h>

#include <fcntl.h>

#include <io.h>

#include <dir.h>

void

exitOnError(char *msg) {

        perror(msg);

        exit(1);

}

int

main(int argc, char *argv[]) {

        void *buf;

        int handle, n, done;

        struct ffblk ffblk;

        char *prog = argv[0];

        buf = malloc(BUFSIZ);

        if (argc == 1) {

                printf("%s: too few parameters !\n", prog);

                printf("concatenate files and print on the standard output\n");

                printf("usage: %s FILE [FILE...]\n", prog);

                exit(0);

        }

        while (--argc > 0) {

                done = findfirst(*++argv, &ffblk, 0);

                while (!done) {

                        if ((handle = _open(ffblk.ff_name, O_RDONLY|O_BINARY)) == -1) exitOnError(prog);

                        while (!eof(handle))

                                if ((n = _read(handle, buf, BUFSIZ)) == -1 || _write(1, buf, n) == -1)

                                        exitOnError(prog);

                        _close(handle);

                        done = findnext(&ffblk);

                }

        }

        return 0;

}