[PATCH 5/6] Add strings(1)

---
 Makefile  |  1 +
 strings.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 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..7386963
--- /dev/null
+++ b/strings.c
_AT_@ -0,0 +1,56 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include "util.h"
+
+static void dostrings(FILE *fp, const char *fname);
+
+static void
+usage(void)
+{
+	eprintf("usage: %s file\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	FILE *fp;
+
+	ARGBEGIN {
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc > 0) {
+		if (!(fp = fopen(argv[0], "r")))
+			eprintf("open %s:", argv[0]);
+		dostrings(fp, argv[0]);
+		fclose(fp);
+	} else {
+		dostrings(stdin, "<stdin>");
+	}
+
+	return 0;
+}
+
+static void
+dostrings(FILE *fp, const char *fname)
+{
+	unsigned char buf[BUFSIZ];
+	int c, i = 0;
+	off_t offset = 0;
+
+	do {
+		offset++;
+		if (isprint(c = getc(fp)))
+			buf[i++] = c;
+		if ((!isprint(c) && i >= 6) || i == sizeof(buf) - 1) {
+			buf[i] = '\0';
+			printf("%8ld: %s\n", (long)offset - i - 1, buf);
+			i = 0;
+		}
+	} while (c != EOF);
+	if (ferror(fp))
+		eprintf("%s read error:", fname);
+}
-- 
1.8.2.3
--sm4nu43k4a2Rpi4c
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