Add rb_str_length

ryoqun · Sep 28, 2012 · acaddd2 · acaddd2
1 parent 03502d9
commit acaddd2
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diff --git a/vm/capi/19/include/ruby/ruby.h b/vm/capi/19/include/ruby/ruby.h
@@ -1765,6 +1765,8 @@ VALUE rb_uint2big(unsigned long number);
 
   long    rb_str_hash(VALUE str);
 
+  VALUE   rb_str_length(VALUE self);
+
   /** Raises an exception from the value of errno. */
   NORETURN(void rb_sys_fail(const char* mesg));
 

diff --git a/vm/capi/string.cpp b/vm/capi/string.cpp
@@ -460,6 +460,13 @@ extern "C" {
     return string->byte_size();
   }
 
+  VALUE rb_str_length(VALUE self) {
+    NativeMethodEnvironment* env = NativeMethodEnvironment::get();
+
+    String* string = capi_get_string(env, self);
+    return LONG2FIX(string->char_size(env->state()));
+  }
+
   void rb_str_set_len(VALUE self, size_t len) {
     NativeMethodEnvironment* env = NativeMethodEnvironment::get();