Added cstr_destr(...) for destroying multiple cstr_t at once.

1 files changed, 8 insertions, 1 deletions

diff --git a/stc/cstr.h b/stc/cstr.h
index b5aab764..c695a1ba 100644
--- a/stc/cstr.h
+++ b/stc/cstr.h
@@ -46,6 +46,12 @@ static  cstr_t cstr_init = {(char* ) &_cstr_nullrep[2]};
 #define cstr_front(s)      (s).str[0]

 #define cstr_back(s)       (s).str[_cstr_size(s) - 1] /* may have side effect */

 #define cstr_npos          ((size_t) (-1))

+/* destroy multiple strings: */

+#define cstr_destr(...) do { \

+    cstr_t *__objs[] = {__VA_ARGS__}; \

+    for (size_t i=0; i<sizeof(__objs)/sizeof(__objs[0]); ++i) \

+        cstr_destroy(__objs[i]); \

+} while (0)

 

 STC_API cstr_t

 cstr_make_n(const char* str, size_t len);

@@ -276,11 +282,12 @@ cstr_append_n(cstr_t* self, const char* str, size_t len) {
     if (len) {

         size_t oldlen = cstr_size(*self), newlen = oldlen + len;

         if (newlen > cstr_capacity(*self)) {

+            /* handle self append */

             size_t off = (size_t) (str - self->str);

             cstr_reserve(self, newlen * 3 / 2);

             if (off <= oldlen) str = self->str + off;

         }

-        memmove(&self->str[oldlen], str, len);

+        memcpy(&self->str[oldlen], str, len);

         self->str[_cstr_size(*self) = newlen] = '\0';

     }

     return self;