diff options
Diffstat (limited to 'core/cat.c')
-rw-r--r-- | core/cat.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/core/cat.c b/core/cat.c deleted file mode 100644 index ef0d5d8..0000000 --- a/core/cat.c +++ /dev/null @@ -1,95 +0,0 @@ -/* cat - concatenate a file to stdout - * Copyright (C) 2022 Ferass EL HAFIDI - * Copyright (C) 2022 Leah Rowe - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the copyright holder nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#define _POSIX_C_SOURCE 200809L -#include <fcntl.h> -#include <unistd.h> -#include <stdio.h> -#include <errno.h> -#include <string.h> -#include "version.h" - -#ifndef COMPILETIME -#define COMPILETIME -#endif - -int cat(int flides, int unbuffered); -void printUsage(); - -int main(int argc, char *const argv[]) { - int file, argument, i = 1, unbuffered; - - while ((argument = getopt(argc, argv, "u")) != -1) { - if (argument == '?') { - printUsage(); - return 1; - } - else if (argument == 'u') - unbuffered = 1; - } - - - if (argc < 2) { - cat(STDIN_FILENO, unbuffered); - } - - for (i = 1; i != argc; i++) { - if (strcmp(argv[i], "-u")) { - if (strcmp(argv[i], "-")) file = open(argv[i], O_RDONLY); - else file = STDIN_FILENO; - if (file == -1) return errno; /* Something went wrong */ - cat(file, unbuffered); - close(file); - } - } - return 0; -} - -int cat(int fildes, int unbuffered) { - char s[4096]; - FILE *filstr; - size_t length; - if (unbuffered) while ((length = read(fildes, s, 4096)) > 0) - write(STDOUT_FILENO, s, length); - else { - filstr = fdopen(fildes, "r"); - while ((length = fread(s, 4096, 1, filstr)) > 0) - fwrite(s, length, 1, stdout); - } - if (errno) return errno; - return 0; -} - -void printUsage() { - printf("Ferass' Base System. (%s)\n\n" - "Usage: cat [file]\n\n" - "Concatenate <file> to standard output.\n" - "When no file is specified or file is '-', read standard input\n\n" - "\t-u\tPrint unbuffered\n", COMPILETIME); -} |