1 files changed, 88 insertions, 0 deletions

diff --git a/miscutils/strings.c b/miscutils/strings.c
new file mode 100644
index 000000000..0d5576e9b
--- /dev/null
+++ b/miscutils/strings.c
@@ -0,0 +1,88 @@
+/* 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 "busybox.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <ctype.h>
+
+#define WHOLE_FILE              1
+#define PRINT_NAME              2
+#define PRINT_OFFSET    4
+#define SIZE                    8
+
+int strings_main(int argc, char **argv)
+{
+        int n, c, i = 0, status = EXIT_SUCCESS;
+        unsigned opt;
+        unsigned long count;
+        FILE *file = stdin;
+        char *string;
+        const char *fmt = "%s: ";
+        char *n_arg = "4";
+
+        opt = getopt32(argc, argv, "afon:", &n_arg);
+        /* -a is our default behaviour */
+
+        argc -= optind;
+        argv += optind;
+
+        n = xatoul_range(n_arg, 1, INT_MAX);
+        string = xzalloc(n + 1);
+        n--;
+
+        if (argc == 0) {
+                fmt = "{%s}: ";
+                *argv = (char *)bb_msg_standard_input;
+                goto PIPE;
+        }
+
+        do {
+                file = fopen_or_warn(*argv, "r");
+                if (file) {
+PIPE:
+                        count = 0;
+                        do {
+                                c = fgetc(file);
+                                if (isprint(c) || c == '\t') {
+                                        if (i <= n) {
+                                                string[i] = c;
+                                        } else {
+                                                putchar(c);
+                                        }
+                                        if (i == n) {
+                                                if (opt & PRINT_NAME) {
+                                                        printf(fmt, *argv);
+                                                }
+                                                if (opt & PRINT_OFFSET) {
+                                                        printf("%7lo ", count - n);
+                                                }
+                                                printf("%s", string);
+                                        }
+                                        i++;
+                                } else {
+                                        if (i > n) {
+                                                putchar('\n');
+                                        }
+                                        i = 0;
+                                }
+                                count++;
+                        } while (c != EOF);
+                        fclose_if_not_stdin(file);
+                } else {
+                        status = EXIT_FAILURE;
+                }
+        } while (--argc > 0);
+
+        if (ENABLE_FEATURE_CLEAN_UP)
+                free(string);
+
+        fflush_stdout_and_exit(status);
+}