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-rw-r--r--release/src/router/busybox/coreutils/catv.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/release/src/router/busybox/coreutils/catv.c b/release/src/router/busybox/coreutils/catv.c
new file mode 100644
index 00000000..ff3139c8
--- /dev/null
+++ b/release/src/router/busybox/coreutils/catv.c
@@ -0,0 +1,75 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * cat -v implementation for busybox
+ *
+ * Copyright (C) 2006 Rob Landley <rob@landley.net>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* See "Cat -v considered harmful" at
+ * http://cm.bell-labs.com/cm/cs/doc/84/kp.ps.gz */
+
+#include "libbb.h"
+
+int catv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int catv_main(int argc UNUSED_PARAM, char **argv)
+{
+ int retval = EXIT_SUCCESS;
+ int fd;
+ unsigned flags;
+
+ flags = getopt32(argv, "etv");
+#define CATV_OPT_e (1<<0)
+#define CATV_OPT_t (1<<1)
+#define CATV_OPT_v (1<<2)
+ flags ^= CATV_OPT_v;
+ argv += optind;
+
+ /* Read from stdin if there's nothing else to do. */
+ if (!argv[0])
+ *--argv = (char*)"-";
+ do {
+ fd = open_or_warn_stdin(*argv);
+ if (fd < 0) {
+ retval = EXIT_FAILURE;
+ continue;
+ }
+ for (;;) {
+ int i, res;
+
+#define read_buf bb_common_bufsiz1
+ res = read(fd, read_buf, COMMON_BUFSIZE);
+ if (res < 0)
+ retval = EXIT_FAILURE;
+ if (res < 1)
+ break;
+ for (i = 0; i < res; i++) {
+ unsigned char c = read_buf[i];
+
+ if (c > 126 && (flags & CATV_OPT_v)) {
+ if (c == 127) {
+ printf("^?");
+ continue;
+ }
+ printf("M-");
+ c -= 128;
+ }
+ if (c < 32) {
+ if (c == 10) {
+ if (flags & CATV_OPT_e)
+ bb_putchar('$');
+ } else if (flags & (c==9 ? CATV_OPT_t : CATV_OPT_v)) {
+ printf("^%c", c+'@');
+ continue;
+ }
+ }
+ bb_putchar(c);
+ }
+ }
+ if (ENABLE_FEATURE_CLEAN_UP && fd)
+ close(fd);
+ } while (*++argv);
+
+ fflush_stdout_and_exit(retval);
+}