🛠️🐜 Antkeeper superbuild with dependencies included
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85 lines
1.7 KiB
85 lines
1.7 KiB
/*
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* Output contents of a file.
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*
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* Compile this file with Visual Studio and run the produced command in
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* console with a file name argument. For example, command
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*
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* cat include\dirent.h
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*
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* will output the dirent.h to screen.
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*
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* Copyright (C) 1998-2019 Toni Ronkko
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* This file is part of dirent. Dirent may be freely distributed
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* under the MIT license. For all details and documentation, see
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* https://github.com/tronkko/dirent
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*/
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#define _CRT_SECURE_NO_WARNINGS
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dirent.h>
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#include <errno.h>
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#include <locale.h>
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static void output_file (const char *fn);
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int
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main(
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int argc, char *argv[])
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{
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int i;
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/* Select default locale */
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setlocale (LC_ALL, "");
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/* Require at least one file */
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if (argc == 1) {
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fprintf (stderr, "Usage: cat filename\n");
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return EXIT_FAILURE;
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}
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/* For each file name argument in command line */
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i = 1;
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while (i < argc) {
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output_file (argv[i]);
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i++;
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}
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return EXIT_SUCCESS;
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}
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/*
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* Output file to screen
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*/
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static void
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output_file(
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const char *fn)
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{
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FILE *fp;
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/* Open file */
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fp = fopen (fn, "r");
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if (fp != NULL) {
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size_t n;
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char buffer[4096];
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/* Output file to screen */
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do {
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/* Read some bytes from file */
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n = fread (buffer, 1, 4096, fp);
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/* Output bytes to screen */
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fwrite (buffer, 1, n, stdout);
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} while (n != 0);
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/* Close file */
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fclose (fp);
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} else {
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/* Could not open directory */
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fprintf (stderr, "Cannot open %s (%s)\n", fn, strerror (errno));
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exit (EXIT_FAILURE);
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}
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}
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