1 files changed, 20 insertions, 4 deletions

diff --git a/libbb/compare_string_array.c b/libbb/compare_string_array.c
index cac93d995..d15578ca3 100644
--- a/libbb/compare_string_array.c
+++ b/libbb/compare_string_array.c
@@ -3,11 +3,11 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <string.h>
 #include "libbb.h"
 
-/* returns the array number of the string */
-int compare_string_array(const char * const string_array[], const char *key)
+/* returns the array index of the string */
+/* (index of first match is returned, or -1) */
+int index_in_str_array(const char * const string_array[], const char *key)
 {
         int i;
 
@@ -16,6 +16,22 @@ int compare_string_array(const char * const string_array[], const char *key)
                         return i;
                 }
         }
-        return -i;
+        return -1;
 }
 
+/* returns the array index of the string, even if it matches only a beginning */
+/* (index of first match is returned, or -1) */
+int index_in_substr_array(const char * const string_array[], const char *key)
+{
+        int i;
+        int len = strlen(key);
+        if (!len)
+                return -1;
+
+        for (i = 0; string_array[i] != 0; i++) {
+                if (strncmp(string_array[i], key, len) == 0) {
+                        return i;
+                }
+        }
+        return -1;
+}