Add a readbuffer function to d8, that reads a file into an ArrayBuffer.

src/d8.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 817 matching lines @@
 };
 #endif
 
 Handle<ObjectTemplate> Shell::CreateGlobalTemplate() {
   Handle<ObjectTemplate> global_template = ObjectTemplate::New();
   global_template->Set(String::New("print"), FunctionTemplate::New(Print));
   global_template->Set(String::New("write"), FunctionTemplate::New(Write));
   global_template->Set(String::New("read"), FunctionTemplate::New(Read));
   global_template->Set(String::New("readbinary"),
                        FunctionTemplate::New(ReadBinary));
+  global_template->Set(String::New("readbuffer"),
+                       FunctionTemplate::New(ReadBuffer));
   global_template->Set(String::New("readline"),
                        FunctionTemplate::New(ReadLine));
   global_template->Set(String::New("load"), FunctionTemplate::New(Load));
   global_template->Set(String::New("quit"), FunctionTemplate::New(Quit));
   global_template->Set(String::New("version"), FunctionTemplate::New(Version));
   global_template->Set(String::New("enableProfiler"),
                        FunctionTemplate::New(EnableProfiler));
   global_template->Set(String::New("disableProfiler"),
                        FunctionTemplate::New(DisableProfiler));
 
@@ skipping 215 matching lines @@
   if (chars == NULL) {
     return ThrowException(String::New("Error reading file"));
   }
   // We skip checking the string for UTF8 characters and use it raw as
   // backing store for the external string with 8-bit characters.
   BinaryResource* resource = new BinaryResource(chars, size);
   return String::NewExternal(resource);
 }
 
 
+Handle<Value> Shell::ReadBuffer(const Arguments& args) {
+  String::Utf8Value filename(args[0]);
+  int length;
+  if (*filename == NULL) {
+    return ThrowException(String::New("Error loading file"));
+  }
+  char* data = ReadChars(*filename, &length);
+  if (data == NULL) {
+    return ThrowException(String::New("Error reading file"));
+  }
+
+  Handle<Object> buffer = Object::New();
+  buffer->Set(String::New(kArrayBufferMarkerPropName), True(), ReadOnly);
+
+  Persistent<Object> persistent_buffer = Persistent<Object>::New(buffer);
+  persistent_buffer.MakeWeak(data, ExternalArrayWeakCallback);
+  persistent_buffer.MarkIndependent();
+
+  buffer->SetIndexedPropertiesToExternalArrayData(
+      reinterpret_cast<uint8_t*>(data), kExternalUnsignedByteArray, length);
+  buffer->Set(String::New("byteLength"),
+             Int32::New(static_cast<int32_t>(length)), ReadOnly);
+  return buffer;
+}
+
+
 #ifndef V8_SHARED
 static char* ReadToken(char* data, char token) {
   char* next = i::OS::StrChr(data, token);
   if (next != NULL) {
     *next = '\0';
     return (next + 1);
   }
 
   return NULL;
 }
@@ skipping 483 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif