63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* This file is part of ToaruOS and is released under the terms
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* of the NCSA / University of Illinois License - see LICENSE.md
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* Copyright (C) 2018 K. Lange
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*
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* tee - copy stdin to stdout and to specified files
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <signal.h>
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#include <string.h>
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#include <errno.h>
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int main(int argc, char * argv[]) {
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int append = 0;
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int ret_val = 0;
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int opt;
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while ((opt = getopt(argc, argv, "ai")) != -1) {
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switch (opt) {
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case 'a':
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append = 1;
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break;
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case 'i':
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signal(SIGINT, SIG_IGN);
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break;
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}
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}
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int file_count = argc - optind;
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FILE ** files = malloc(sizeof(FILE *) * file_count);
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for (int i = 0, j = optind; j < argc && i < file_count; j++) {
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files[i] = fopen(argv[j], append ? "a" : "w");
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if (!files[i]) {
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fprintf(stderr, "%s: %s: %s\n", argv[0], argv[j], strerror(errno));
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ret_val = 1;
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file_count--;
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continue;
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} else {
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i++;
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}
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}
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while (!feof(stdin)) {
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int c = fgetc(stdin);
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if (c >= 0) {
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fputc(c, stdout);
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for (int i = 0; i < file_count; ++i) {
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fputc(c, files[i]);
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}
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}
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}
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for (int i = 0; i < file_count; ++i) {
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fclose(files[i]);
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}
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return ret_val;
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}
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