+/* vi: set sw=4 ts=4: */
/*
* Mini tee implementation for busybox
*
- *
- * Copyright (C) 1999 by Lineo, inc.
- * Written by John Beppu <beppu@line.com>
+ * Copyright (C) 1999,2000,2001 by Lineo, inc.
+ * Written by Matt Kraai <kraai@alumni.carnegiemellon.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
*/
+#include "busybox.h"
+#include <getopt.h>
#include <stdio.h>
-#include <stdlib.h>
-
-/* FileList _______________________________________________________________ */
-
-#define FL_MAX 1024
-static FILE *FileList[FL_MAX];
-static int FL_end;
-
-typedef void (FL_Function)(FILE *file, char c);
-
-/* initialize FileList */
-static void
-FL_init()
-{
- FL_end = 0;
- FileList[0] = stdout;
-}
-
-/* add a file to FileList */
-static int
-FL_add(const char *filename, char *opt_open)
-{
- FILE *file;
-
- file = fopen(filename, opt_open);
- if (!file) { return 0; };
- if (FL_end < FL_MAX) {
- FileList[++FL_end] = file;
- }
- return 1;
-}
-
-/* apply a function to everything in FileList */
-static void
-FL_apply(FL_Function *f, char c)
-{
- int i;
- for (i = 0; i <= FL_end; i++) {
- f(FileList[i], c);
- }
-}
-/* ________________________________________________________________________ */
-
-/* FL_Function for writing to files*/
-static void
-tee_fwrite(FILE *file, char c)
-{
- fputc(c, file);
-}
-
-/* FL_Function for closing files */
-static void
-tee_fclose(FILE *file, char c)
-{
- fclose(file);
-}
-
-/* help message */
-static void
-tee_usage()
-{
- fprintf (
- stdout,
- "%s\n%s\n%s\n%s\n%s\n",
- "Usage: tee [OPTION]... [FILE]...",
- "Copy standard input to each FILE, and also to standard output.\n",
- " -a, append to the given FILEs, do not overwrite",
- " -i, ignore interrupt signals",
- " -h, this help message"
- );
- exit(1);
-}
-
-/* BusyBoxed tee(1) */
int
tee_main(int argc, char **argv)
{
- int i;
- char c;
- char opt;
- char opt_fopen[2] = "w";
-
- /* parse argv[] */
- for (i = 1; i < argc; i++) {
- if (argv[i][0] == '-') {
- opt = argv[i][1];
- switch (opt) {
- case 'a':
- opt_fopen[0] = 'a';
- break;
- case 'i':
- fprintf(stderr, "ingore interrupt not implemented\n");
- break;
- case 'h':
- tee_usage();
- break;
+ char *mode = "w";
+ int c, i, status = 0, nfiles = 0;
+ FILE **files;
+
+ while ((c = getopt(argc, argv, "a")) != EOF) {
+ switch (c) {
+ case 'a':
+ mode = "a";
+ break;
default:
- fprintf(stderr, "tee: invalid option -- %c\n", opt);
- tee_usage();
- }
- } else {
- break;
+ show_usage();
+ }
}
- }
- /* init FILE pointers */
- FL_init();
- for ( ; i < argc; i++) {
- FL_add(argv[i], opt_fopen);
- }
+ files = (FILE **)xmalloc(sizeof(FILE *) * (argc - optind + 1));
+ files[nfiles++] = stdout;
+ while (optind < argc) {
+ if ((files[nfiles++] = fopen(argv[optind++], mode)) == NULL) {
+ nfiles--;
+ perror_msg("%s", argv[optind-1]);
+ status = 1;
+ }
+ }
- /* read and redirect */
- while ((c = (char) getchar()) && (!feof(stdin))) {
- FL_apply(tee_fwrite, c);
- }
+ while ((c = getchar()) != EOF)
+ for (i = 0; i < nfiles; i++)
+ putc(c, files[i]);
- /* clean up */
- FL_apply(tee_fclose, 0);
- exit(0);
+ return status;
}
-/* $Id: tee.c,v 1.1 1999/12/10 05:27:16 beppu Exp $ */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/