1 files changed, 84 insertions, 0 deletions
diff --git a/miscutils/strings.c b/miscutils/strings.c
new file mode 100644
index 0000000..3e02b53
--- /dev/null
+++ b/miscutils/strings.c
@@ -0,0 +1,84 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * strings implementation for busybox
+ *
+ * Copyright Tito Ragusa <farmatito@tiscali.it>
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include "libbb.h"
+
+#define WHOLE_FILE		1
+#define PRINT_NAME		2
+#define PRINT_OFFSET	4
+#define SIZE			8
+
+int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int strings_main(int argc UNUSED_PARAM, char **argv)
+{
+	int n, c, status = EXIT_SUCCESS;
+	unsigned opt;
+	unsigned count;
+	off_t offset;
+	FILE *file;
+	char *string;
+	const char *fmt = "%s: ";
+	const char *n_arg = "4";
+
+	opt = getopt32(argv, "afon:", &n_arg);
+	/* -a is our default behaviour */
+	/*argc -= optind;*/
+	argv += optind;
+
+	n = xatou_range(n_arg, 1, INT_MAX);
+	string = xzalloc(n + 1);
+	n--;
+
+	if (!*argv) {
+		fmt = "{%s}: ";
+		*--argv = (char *)bb_msg_standard_input;
+	}
+
+	do {
+		file = fopen_or_warn_stdin(*argv);
+		if (!file) {
+			status = EXIT_FAILURE;
+			continue;
+		}
+		offset = 0;
+		count = 0;
+		do {
+			c = fgetc(file);
+			if (isprint(c) || c == '\t') {
+				if (count > n) {
+					bb_putchar(c);
+				} else {
+					string[count] = c;
+					if (count == n) {
+						if (opt & PRINT_NAME) {
+							printf(fmt, *argv);
+						}
+						if (opt & PRINT_OFFSET) {
+							printf("%7"OFF_FMT"o ", offset - n);
+						}
+						fputs(string, stdout);
+					}
+					count++;
+				}
+			} else {
+				if (count > n) {
+					bb_putchar('\n');
+				}
+				count = 0;
+			}
+			offset++;
+		} while (c != EOF);
+		fclose_if_not_stdin(file);
+	} while (*++argv);
+
+	if (ENABLE_FEATURE_CLEAN_UP)
+		free(string);
+
+	fflush_stdout_and_exit(status);
+}