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// Copyright 2019 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 "util/json/json_value.h"
namespace openscreen {
absl::optional<int> MaybeGetInt(const Json::Value& message,
const char* first,
const char* last) {
const Json::Value* value = message.find(first, last);
absl::optional<int> result;
if (value && value->isInt()) {
result = value->asInt();
}
return result;
}
absl::optional<absl::string_view> MaybeGetString(const Json::Value& message) {
if (message.isString()) {
const char* begin = nullptr;
const char* end = nullptr;
message.getString(&begin, &end);
if (begin && end >= begin) {
return absl::string_view(begin, end - begin);
}
}
return absl::nullopt;
}
absl::optional<absl::string_view> MaybeGetString(const Json::Value& message,
const char* first,
const char* last) {
const Json::Value* value = message.find(first, last);
absl::optional<absl::string_view> result;
if (value && value->isString()) {
return MaybeGetString(*value);
}
return result;
}
} // namespace openscreen
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