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44 lines
1.3 KiB
44 lines
1.3 KiB
4 months ago
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// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "util/json/json_value.h"
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namespace openscreen {
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absl::optional<int> MaybeGetInt(const Json::Value& message,
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const char* first,
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const char* last) {
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const Json::Value* value = message.find(first, last);
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absl::optional<int> result;
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if (value && value->isInt()) {
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result = value->asInt();
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}
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return result;
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}
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absl::optional<absl::string_view> MaybeGetString(const Json::Value& message) {
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if (message.isString()) {
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const char* begin = nullptr;
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const char* end = nullptr;
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message.getString(&begin, &end);
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if (begin && end >= begin) {
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return absl::string_view(begin, end - begin);
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}
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}
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return absl::nullopt;
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}
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absl::optional<absl::string_view> MaybeGetString(const Json::Value& message,
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const char* first,
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const char* last) {
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const Json::Value* value = message.find(first, last);
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absl::optional<absl::string_view> result;
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if (value && value->isString()) {
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return MaybeGetString(*value);
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}
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return result;
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}
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} // namespace openscreen
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