*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/tee.html */
+//usage:#define tee_trivial_usage
+//usage: "[-ai] [FILE]..."
+//usage:#define tee_full_usage "\n\n"
+//usage: "Copy stdin to each FILE, and also to stdout\n"
+//usage: "\n -a Append to the given FILEs, don't overwrite"
+//usage: "\n -i Ignore interrupt signals (SIGINT)"
+//usage:
+//usage:#define tee_example_usage
+//usage: "$ echo \"Hello\" | tee /tmp/foo\n"
+//usage: "$ cat /tmp/foo\n"
+//usage: "Hello\n"
+
#include "libbb.h"
-#include <signal.h>
int tee_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int tee_main(int argc, char **argv)
* that doesn't consume all its input. Good idea... */
signal(SIGPIPE, SIG_IGN);
- /* Allocate an array of FILE *'s, with one extra for a sentinal. */
+ /* Allocate an array of FILE *'s, with one extra for a sentinel. */
fp = files = xzalloc(sizeof(FILE *) * (argc + 2));
np = names = argv - 1;
*fp = fopen_or_warn(*argv, mode);
if (*fp == NULL) {
retval = EXIT_FAILURE;
+ argv++;
continue;
}
}
*np = *argv++;
GOT_NEW_FILE:
- setbuf(*fp++, NULL); /* tee must not buffer output. */
+ setbuf(*fp, NULL); /* tee must not buffer output. */
+ fp++;
np++;
} while (*argv);
/* names[0] will be filled later */
while ((c = safe_read(STDIN_FILENO, buf, sizeof(buf))) > 0) {
fp = files;
do
- fwrite(buf, 1, c, *fp++);
- while (*fp);
+ fwrite(buf, 1, c, *fp);
+ while (*++fp);
}
if (c < 0) { /* Make sure read errors are signaled. */
retval = EXIT_FAILURE;
while ((c = getchar()) != EOF) {
fp = files;
do
- putc(c, *fp++);
- while (*fp);
+ putc(c, *fp);
+ while (*++fp);
}
#endif