[PATCH] Add strings(1)

---
 Makefile  |  1 +
 strings.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 strings.c
diff --git a/Makefile b/Makefile
index 33c78a0..6bc091a 100644
--- a/Makefile
+++ b/Makefile
_AT_@ -70,6 +70,7 @@ SRC = \
 	sort.c     \
 	split.c    \
 	sponge.c   \
+	strings.c  \
 	sync.c     \
 	tail.c     \
 	tar.c      \
diff --git a/strings.c b/strings.c
new file mode 100644
index 0000000..a2a2a06
--- /dev/null
+++ b/strings.c
_AT_@ -0,0 +1,70 @@
+/* See LICENSE file for copyright and license details. */
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include "util.h"
+
+static void dostrings(int fd, const char *fname);
+
+static void
+usage(void)
+{
+	eprintf("usage: %s file\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	int fd;
+
+	ARGBEGIN {
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc > 0) {
+		if ((fd = open(argv[0], O_RDONLY)) < 0)
+			eprintf("open %s:", argv[0]);
+		dostrings(fd, argv[0]);
+		close(fd);
+	} else {
+		dostrings(STDIN_FILENO, "<stdin>");
+	}
+
+	return 0;
+}
+
+static void
+dostrings(int fd, const char *fname)
+{
+	ssize_t r;
+	unsigned char buf[BUFSIZ], c;
+	int span = 0, i = 0;
+	off_t offset = 0;
+
+	while ((r = read(fd, &c, 1) > 0)) {
+		offset++;
+		if (isprint(c)) {
+			span++;
+			buf[i++] = c;
+			if (i == sizeof(buf) - 1) {
+				printf("%8ld: %.*s\n",
+				       (long)offset - i - 1,
+				       i, buf);
+				span = i = 0;
+			}
+		} else {
+			if (span >= 6) {
+				printf("%8ld: %.*s\n",
+				       (long)offset - i - 1,
+				       i, buf);
+			}
+			span = i = 0;
+		}
+	}
+	if (r < 0)
+		eprintf("%s: read error:", fname);
+}
-- 
1.8.2.3
--liOOAslEiF7prFVr--