blob: 4b9cd4be25c8e0876df47a5923ab9e63393b852d [file] [log] [blame]
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/dom/url.h"
#include "base/guid.h"
#include "base/logging.h"
#include "cobalt/base/polymorphic_downcast.h"
#include "cobalt/dom/dom_settings.h"
#include "googleurl/src/gurl.h"
namespace cobalt {
namespace dom {
namespace {
const char kBlobUrlProtocol[] = "blob";
} // namespace
// static
std::string URL::CreateObjectURL(
script::EnvironmentSettings* environment_settings,
const scoped_refptr<MediaSource>& media_source) {
DOMSettings* dom_settings =
base::polymorphic_downcast<DOMSettings*>(environment_settings);
DCHECK(dom_settings);
DCHECK(dom_settings->media_source_registry());
if (!media_source) {
return "";
}
std::string blob_url = kBlobUrlProtocol;
blob_url += ':' + base::GenerateGUID();
dom_settings->media_source_registry()->Register(blob_url, media_source);
return blob_url;
}
// static
std::string URL::CreateObjectURL(
script::EnvironmentSettings* environment_settings,
const scoped_refptr<Blob>& blob) {
DOMSettings* dom_settings =
base::polymorphic_downcast<DOMSettings*>(environment_settings);
DCHECK(dom_settings);
DCHECK(dom_settings->blob_registry());
if (!blob) {
return "";
}
std::string blob_url = kBlobUrlProtocol;
blob_url += ':' + base::GenerateGUID();
dom_settings->blob_registry()->Register(blob_url, blob);
return blob_url;
}
// static
void URL::RevokeObjectURL(script::EnvironmentSettings* environment_settings,
const std::string& url) {
DOMSettings* dom_settings =
base::polymorphic_downcast<DOMSettings*>(environment_settings);
DCHECK(dom_settings);
DCHECK(dom_settings->media_source_registry());
// 1. If the url refers to a Blob that has a readability state of CLOSED OR if
// the value provided for the url argument is not a Blob URL, OR if the value
// provided for the url argument does not have an entry in the Blob URL Store,
// this method call does nothing. User agents may display a message on the
// error console.
if (!GURL(url).SchemeIs(kBlobUrlProtocol)) {
LOG(WARNING) << "URL is not a Blob URL.";
return;
}
// 2. Otherwise, user agents must remove the entry from the Blob URL Store for
// url.
if (!dom_settings->media_source_registry()->Unregister(url) &&
!dom_settings->blob_registry()->Unregister(url)) {
DLOG(WARNING) << "Cannot find object for blob url " << url;
}
}
bool URL::BlobResolver(dom::Blob::Registry* registry, const GURL& url,
const char** data, size_t* size) {
DCHECK(data);
DCHECK(size);
*size = 0;
*data = NULL;
dom::Blob* blob = registry->Retrieve(url.spec()).get();
if (blob) {
*size = static_cast<size_t>(blob->size());
if (*size > 0) {
*data = reinterpret_cast<const char*>(blob->data());
}
return true;
} else {
return false;
}
}
} // namespace dom
} // namespace cobalt