components/invalidation/invalidation_util.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/invalidation/invalidation_util.h"
   6
   7 #include <ostream>
   8 #include <sstream>
   9
  10 #include "base/json/json_writer.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/values.h"
  13 #include "components/invalidation/invalidation.h"
  14 #include "google/cacheinvalidation/include/types.h"
  15 #include "google/cacheinvalidation/types.pb.h"
  16
  17 namespace syncer {
  18
  19 bool ObjectIdLessThan::operator()(const invalidation::ObjectId& lhs,
  20                                   const invalidation::ObjectId& rhs) const {
  21   return (lhs.source() < rhs.source()) ||
  22          (lhs.source() == rhs.source() && lhs.name() < rhs.name());
  23 }
  24
  25 bool InvalidationVersionLessThan::operator()(const Invalidation& a,
  26                                              const Invalidation& b) const {
  27   DCHECK(a.object_id() == b.object_id())
  28       << "a: " << ObjectIdToString(a.object_id()) << ", "
  29       << "b: " << ObjectIdToString(a.object_id());
  30
  31   if (a.is_unknown_version() && !b.is_unknown_version())
  32     return true;
  33
  34   if (!a.is_unknown_version() && b.is_unknown_version())
  35     return false;
  36
  37   if (a.is_unknown_version() && b.is_unknown_version())
  38     return false;
  39
  40   return a.version() < b.version();
  41 }
  42
  43 scoped_ptr<base::DictionaryValue> ObjectIdToValue(
  44     const invalidation::ObjectId& object_id) {
  45   scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
  46   value->SetInteger("source", object_id.source());
  47   value->SetString("name", object_id.name());
  48   return value.Pass();
  49 }
  50
  51 bool ObjectIdFromValue(const base::DictionaryValue& value,
  52                        invalidation::ObjectId* out) {
  53   *out = invalidation::ObjectId();
  54   std::string name;
  55   int source = 0;
  56   if (!value.GetInteger("source", &source) || !value.GetString("name", &name)) {
  57     return false;
  58   }
  59   *out = invalidation::ObjectId(source, name);
  60   return true;
  61 }
  62
  63 std::string ObjectIdToString(const invalidation::ObjectId& object_id) {
  64   scoped_ptr<base::DictionaryValue> value(ObjectIdToValue(object_id));
  65   std::string str;
  66   base::JSONWriter::Write(value.get(), &str);
  67   return str;
  68 }
  69
  70 }  // namespace syncer