Implement a proxy for URL util. Some of the implementation that doesn't need ...

ppapi/shared_impl/url_util_impl.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/shared_impl/url_util_impl.h"
+
+#include "googleurl/src/gurl.h"
+
+namespace pp {
+namespace shared_impl {
+
+namespace {
+
+void ConvertComponent(const url_parse::Component& input,
+                      PP_URLComponent_Dev* output) {
+  output->begin = input.begin;
+  output->len = input.len;
+}
+
+}  // namespace
+
+// static
+PP_Var URLUtilImpl::Canonicalize(StringFromVar string_from_var,
+                                 VarFromUtf8 var_from_utf8,
+                                 PP_Module pp_module,
+                                 PP_Var url,
+                                 PP_URLComponents_Dev* components) {
+  const std::string* url_string = string_from_var(url);
+  if (!url_string)
+    return PP_MakeNull();
+  return GenerateURLReturn(var_from_utf8, pp_module,
+                           GURL(*url_string), components);
+}
+
+// static
+PP_Var URLUtilImpl::ResolveRelativeToURL(StringFromVar string_from_var,
+                                         VarFromUtf8 var_from_utf8,
+                                         PP_Module pp_module,
+                                         PP_Var base_url,
+                                         PP_Var relative,

[yzshen1, 2011/03/16 21:19:23]

Please use the same name as the one in the .h file.

+                                         PP_URLComponents_Dev* components) {
+  const std::string* base_url_string = string_from_var(base_url);
+  const std::string* relative_string = string_from_var(relative);
+  if (!base_url_string || !relative_string)
+    return PP_MakeNull();
+
+  GURL base_gurl(*base_url_string);
+  if (!base_gurl.is_valid())
+    return PP_MakeNull();
+  return GenerateURLReturn(var_from_utf8, pp_module,
+                           base_gurl.Resolve(*relative_string),
+                           components);
+}
+
+// static
+PP_Bool URLUtilImpl::IsSameSecurityOrigin(StringFromVar string_from_var,
+                                          PP_Var url_a, PP_Var url_b) {
+  const std::string* url_a_string = string_from_var(url_a);
+  const std::string* url_b_string = string_from_var(url_b);
+  if (!url_a_string || !url_b_string)
+    return PP_FALSE;
+
+  GURL gurl_a(*url_a_string);
+  GURL gurl_b(*url_b_string);
+  if (!gurl_a.is_valid() || !gurl_b.is_valid())
+    return PP_FALSE;
+
+  return gurl_a.GetOrigin() == gurl_b.GetOrigin() ? PP_TRUE : PP_FALSE;
+}
+
+// Output can be NULL to specify "do nothing." This rule is followed by all the
+// url util functions, so we implement it once here.
+void URLUtilImpl::ConvertComponents(const url_parse::Parsed& input,

[yzshen1, 2011/03/16 21:19:23]

It seems this one is not used by anyone other than URLUtilImpl itself. If that
is true, we could consider putting it in the anonymous namespace.

+                                    PP_URLComponents_Dev* output) {
+  if (!output)
+    return;
+
+  ConvertComponent(input.scheme, &output->scheme);
+  ConvertComponent(input.username, &output->username);
+  ConvertComponent(input.password, &output->password);
+  ConvertComponent(input.host, &output->host);
+  ConvertComponent(input.port, &output->port);
+  ConvertComponent(input.path, &output->path);
+  ConvertComponent(input.query, &output->query);
+  ConvertComponent(input.ref, &output->ref);
+}
+
+// Used for returning the given GURL from a PPAPI function, with an optional
+// out param indicating the components.
+PP_Var URLUtilImpl::GenerateURLReturn(VarFromUtf8 var_from_utf8,
+                                      PP_Module module,
+                                      const GURL& url,
+                                      PP_URLComponents_Dev* components) {
+  if (!url.is_valid())
+    return PP_MakeNull();
+  ConvertComponents(url.parsed_for_possibly_invalid_spec(), components);
+  return var_from_utf8(module, url.possibly_invalid_spec().c_str(),
+      static_cast<uint32_t>(url.possibly_invalid_spec().size()));
+}
+
+}  // namespace shared_impl
+}  // namespace pp