t0021/rot13-filter: refactor checking final lf

diff --git a/string-list.c b/string-list.c
index 45016ad86dd5eb55534524cb50e30542e87fab70..a0cf0cfe88ee38f35ec33662778ec1bd7036a127 100644 (file)
--- a/string-list.c
+++ b/string-list.c
@@ -16,7 +16,7 @@ static int get_entry_index(const struct string_list *list, const char *string,
        compare_strings_fn cmp = list->cmp ? list->cmp : strcmp;
 
        while (left + 1 < right) {
-               int middle = (left + right) / 2;
+               int middle = left + (right - left) / 2;
                int compare = cmp(string, list->items[middle].string);
                if (compare < 0)
                        right = middle;
@@ -41,14 +41,10 @@ static int add_entry(int insert_at, struct string_list *list, const char *string
        if (exact_match)
                return -1 - index;
 
-       if (list->nr + 1 >= list->alloc) {
-               list->alloc += 32;
-               REALLOC_ARRAY(list->items, list->alloc);
-       }
+       ALLOC_GROW(list->items, list->nr+1, list->alloc);
        if (index < list->nr)
-               memmove(list->items + index + 1, list->items + index,
-                               (list->nr - index)
-                               * sizeof(struct string_list_item));
+               MOVE_ARRAY(list->items + index + 1, list->items + index,
+                          list->nr - index);
        list->items[index].string = list->strdup_strings ?
                xstrdup(string) : (char *)string;
        list->items[index].util = NULL;
@@ -67,6 +63,23 @@ struct string_list_item *string_list_insert(struct string_list *list, const char
        return list->items + index;
 }
 
+void string_list_remove(struct string_list *list, const char *string,
+                       int free_util)
+{
+       int exact_match;
+       int i = get_entry_index(list, string, &exact_match);
+
+       if (exact_match) {
+               if (list->strdup_strings)
+                       free(list->items[i].string);
+               if (free_util)
+                       free(list->items[i].util);
+
+               list->nr--;
+               MOVE_ARRAY(list->items + i, list->items + i + 1, list->nr - i);
+       }
+}
+
 int string_list_has_string(const struct string_list *list, const char *string)
 {
        int exact_match;