New function ds_clear().

diff --git a/include/dynamic-string.h b/include/dynamic-string.h
index e43d006..ea69c6a 100644 (file)
--- a/include/dynamic-string.h
+++ b/include/dynamic-string.h
@@ -49,6 +49,7 @@ struct ds {
 #define DS_EMPTY_INITIALIZER { NULL, 0, 0 }
 
 void ds_init(struct ds *);
+void ds_clear(struct ds *);
 void ds_reserve(struct ds *, size_t min_length);
 void ds_put_char(struct ds *, char);
 void ds_put_cstr(struct ds *, const char *);

diff --git a/lib/dynamic-string.c b/lib/dynamic-string.c
index 68dd341..f08e8cb 100644 (file)
--- a/lib/dynamic-string.c
+++ b/lib/dynamic-string.c
@@ -45,6 +45,12 @@ ds_init(struct ds *ds)
     ds->allocated = 0;
 }
 
+void
+ds_clear(struct ds *ds) 
+{
+    ds->length = 0;
+}
+
 void
 ds_reserve(struct ds *ds, size_t min_length)
 {