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-rw-r--r--include/stringlist.h1
-rw-r--r--lib/stringlist.c23
2 files changed, 24 insertions, 0 deletions
diff --git a/include/stringlist.h b/include/stringlist.h
index 5cd452ca5f..dbf159da91 100644
--- a/include/stringlist.h
+++ b/include/stringlist.h
@@ -12,6 +12,7 @@ struct string_list {
int string_list_add(struct string_list *sl, const char *str);
int string_list_add_asprintf(struct string_list *sl, const char *fmt, ...);
int string_list_add_sorted(struct string_list *sl, const char *str);
+int string_list_add_sort_uniq(struct string_list *sl, const char *str);
int string_list_contains(struct string_list *sl, const char *str);
void string_list_print_by_column(struct string_list *sl);
diff --git a/lib/stringlist.c b/lib/stringlist.c
index 8e92c1b207..719fecdaa4 100644
--- a/lib/stringlist.c
+++ b/lib/stringlist.c
@@ -60,6 +60,29 @@ int string_list_add_sorted(struct string_list *sl, const char *str)
return 0;
}
+int string_list_add_sort_uniq(struct string_list *sl, const char *str)
+{
+ struct string_list *new, *entry = sl;
+
+ string_list_for_each_entry(entry, sl) {
+ int cmp = strcmp(entry->str, str);
+
+ if (cmp < 0)
+ continue;
+ if (cmp == 0)
+ return 0;
+
+ break;
+ }
+
+ new = xmalloc(sizeof(*new));
+ new->str = xstrdup(str);
+
+ list_add_tail(&new->list, &entry->list);
+
+ return 0;
+}
+
int string_list_contains(struct string_list *sl, const char *str)
{
struct string_list *entry;