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/*
* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "test/explicit_key_value_config.h"
#include "api/transport/webrtc_key_value_config.h"
#include "rtc_base/checks.h"
#include "system_wrappers/include/field_trial.h"
namespace webrtc {
namespace test {
ExplicitKeyValueConfig::ExplicitKeyValueConfig(const std::string& s) {
std::string::size_type field_start = 0;
while (field_start < s.size()) {
std::string::size_type separator_pos = s.find('/', field_start);
RTC_CHECK_NE(separator_pos, std::string::npos)
<< "Missing separator '/' after field trial key.";
RTC_CHECK_GT(separator_pos, field_start)
<< "Field trial key cannot be empty.";
std::string key = s.substr(field_start, separator_pos - field_start);
field_start = separator_pos + 1;
RTC_CHECK_LT(field_start, s.size())
<< "Missing value after field trial key. String ended.";
separator_pos = s.find('/', field_start);
RTC_CHECK_NE(separator_pos, std::string::npos)
<< "Missing terminating '/' in field trial string.";
RTC_CHECK_GT(separator_pos, field_start)
<< "Field trial value cannot be empty.";
std::string value = s.substr(field_start, separator_pos - field_start);
field_start = separator_pos + 1;
key_value_map_[key] = value;
}
// This check is technically redundant due to earlier checks.
// We nevertheless keep the check to make it clear that the entire
// string has been processed, and without indexing past the end.
RTC_CHECK_EQ(field_start, s.size());
}
std::string ExplicitKeyValueConfig::Lookup(absl::string_view key) const {
auto it = key_value_map_.find(std::string(key));
if (it != key_value_map_.end())
return it->second;
return "";
}
} // namespace test
} // namespace webrtc
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