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// Copyright 2017 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/precache/core/precache_manifest_util.h"
#include <string>
#include "components/precache/core/proto/precache.pb.h"
namespace precache {
void RemoveUnknownFields(PrecacheManifest* manifest) {
manifest->mutable_unknown_fields()->clear();
for (auto& resource : *manifest->mutable_resource())
resource.mutable_unknown_fields()->clear();
if (manifest->has_experiments()) {
manifest->mutable_experiments()->mutable_unknown_fields()->clear();
for (auto& kv : *manifest->mutable_experiments()
->mutable_resources_by_experiment_group()) {
kv.second.mutable_unknown_fields()->clear();
}
}
if (manifest->has_id())
manifest->mutable_id()->mutable_unknown_fields()->clear();
}
base::Optional<std::vector<bool>> GetResourceBitset(
const PrecacheManifest& manifest,
uint32_t experiment_id) {
base::Optional<std::vector<bool>> ret;
if (manifest.has_experiments()) {
const auto& resource_bitset_map =
manifest.experiments().resources_by_experiment_group();
const auto& it = resource_bitset_map.find(experiment_id);
if (it != resource_bitset_map.end()) {
if (it->second.has_bitset()) {
const std::string& bitset = it->second.bitset();
ret.emplace(bitset.size() * 8);
for (size_t i = 0; i < bitset.size(); ++i) {
for (size_t j = 0; j < 8; ++j) {
if ((1 << j) & bitset[i])
ret.value()[i * 8 + j] = true;
}
}
} else if (it->second.has_deprecated_bitset()) {
uint64_t bitset = it->second.deprecated_bitset();
ret.emplace(64);
for (int i = 0; i < 64; ++i) {
if ((0x1ULL << i) & bitset)
ret.value()[i] = true;
}
}
}
}
// Only return one variable to ensure RVO triggers.
return ret;
}
} // namespace precache
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