Add string support to v8 typemaps.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/oliverb-javascript-v8@13802 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Lib/javascript/v8/javascriptstrings.swg

@@ -0,0 +1,64 @@
+
+/* ------------------------------------------------------------
+ *  utility methods for char strings 
+ * ------------------------------------------------------------ */
+%fragment("SWIG_AsCharPtrAndSize","header",fragment="SWIG_pchar_descriptor") {
+SWIGINTERN int
+SWIG_AsCharPtrAndSize(v8::Handle<v8::Value> valRef, char** cptr, size_t* psize, int *alloc)
+{
+  if(valRef->IsString()) {
+    v8::Handle<v8::String> js_str = valRef->toString();
+
+    size_t len = js_str->Utf8Length();
+    size_t abs_len = js_str->Length();
+    char* cstr = new char[len];
+    js_str->WriteUtf8(cstr, len);
+    JSStringGetUTF8CString(js_str, cstr, len);
+    
+    if(alloc) *alloc = SWIG_NEWOBJ;
+    if(psize) *psize = abs_len + 1;
+    if(cptr) *cptr = cstr;
+    
+    return SWIG_OK;
+  } else {
+    if(valRef->IsObject()) {
+      v8::Handle<v8::Object> obj = valRef->ToObject();
+      // try if the object is a wrapped char[]
+      swig_type_info* pchar_descriptor = SWIG_pchar_descriptor();
+      if (pchar_descriptor) {
+        void* vptr = 0;
+        if (SWIG_ConvertPtr(obj, &vptr, pchar_descriptor, 0) == SWIG_OK) {
+          if (cptr) *cptr = (char *) vptr;
+          if (psize) *psize = vptr ? (strlen((char *)vptr) + 1) : 0;
+          if (alloc) *alloc = SWIG_OLDOBJ;
+          return SWIG_OK;
+        }
+      }
+      return SWIG_TypeError;
+    } else {
+      return SWIG_TypeError;
+    }
+  }
+}
+}
+
+%fragment("SWIG_FromCharPtrAndSize","header",fragment="SWIG_pchar_descriptor") {
+SWIGINTERNINLINE v8::Handle<v8::Value>
+SWIG_FromCharPtrAndSize(const char* carray, size_t size)
+{
+  if (carray) {
+    if (size > INT_MAX) {
+      // TODO: handle extra long strings
+      //swig_type_info* pchar_descriptor = SWIG_pchar_descriptor();
+      //return pchar_descriptor ? 
+      //  SWIG_InternalNewPointerObj(%const_cast(carray,char *), pchar_descriptor, 0) : SWIG_Py_Void();
+      return v8::Undefined();
+    } else {
+      v8::Handle<v8::String> js_str = v8::String::New(carray, size);
+      return js_str;
+    }
+  } else {
+    return v8::Undefined();
+  }
+}
+}