Add attachments support to DomDistillerStore

components/dom_distiller/core/article_attachments_data.cc

+// Copyright 2014 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 "components/dom_distiller/core/article_attachments_data.h"
+
+#include "base/logging.h"
+
+namespace dom_distiller {
+
+syncer::AttachmentIdList GetAttachmentIds(
+    const sync_pb::ArticleAttachments& attachments) {
+  syncer::AttachmentIdList ids;
+  ids.push_back(
+      syncer::AttachmentId::CreateFromProto(attachments.distilled_article()));
+  return ids;
+}
+
+scoped_ptr<ArticleAttachmentsData> ArticleAttachmentsData::GetFromAttachmentMap(
+    const sync_pb::ArticleAttachments& attachments_key,
+    const syncer::AttachmentMap& attachment_map) {
+  scoped_ptr<ArticleAttachmentsData> data(new ArticleAttachmentsData);
+  syncer::AttachmentMap::const_iterator iter =
+      attachment_map.find(syncer::AttachmentId::CreateFromProto(
+          attachments_key.distilled_article()));
+  CHECK(iter != attachment_map.end());
+  scoped_refptr<base::RefCountedMemory> attachment_bytes =
+      iter->second.GetData();
+  data->distilled_article_.ParseFromArray(attachment_bytes->front(),
+                                          attachment_bytes->size());
+  return data.Pass();
+}
+
+void ArticleAttachmentsData::CreateSyncAttachments(
+    syncer::AttachmentList* attachment_list,
+    sync_pb::ArticleAttachments* attachments_key) const {
+  CHECK(attachment_list);
+  CHECK(attachments_key);
+  std::string serialized_article(distilled_article_.SerializeAsString());
+  syncer::Attachment attachment(
+      syncer::Attachment::Create(make_scoped_refptr(
+          base::RefCountedString::TakeString(&serialized_article))));
+  *attachments_key->mutable_distilled_article() =
+      attachment.GetId().GetProto();
+  attachment_list->push_back(attachment);
+}
+
+std::string ArticleAttachmentsData::ToString() const {
+  return distilled_article_.SerializeAsString();
+}
+
+}  // namespace dom_distiller