| /* |
| * Copyright (c) 2019 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 "rtc_base/experiments/struct_parameters_parser.h" |
| |
| #include <algorithm> |
| |
| #include "rtc_base/logging.h" |
| #include "rtc_base/strings/string_builder.h" |
| |
| namespace webrtc { |
| namespace struct_parser_impl { |
| namespace { |
| size_t FindOrEnd(absl::string_view str, size_t start, char delimiter) { |
| size_t pos = str.find(delimiter, start); |
| pos = (pos == std::string::npos) ? str.length() : pos; |
| return pos; |
| } |
| } // namespace |
| |
| void ParseConfigParams( |
| absl::string_view config_str, |
| std::map<std::string, std::function<bool(absl::string_view)>> field_map) { |
| size_t i = 0; |
| while (i < config_str.length()) { |
| size_t val_end = FindOrEnd(config_str, i, ','); |
| size_t colon_pos = FindOrEnd(config_str, i, ':'); |
| size_t key_end = std::min(val_end, colon_pos); |
| size_t val_begin = key_end + 1u; |
| std::string key(config_str.substr(i, key_end - i)); |
| absl::string_view opt_value; |
| if (val_end >= val_begin) |
| opt_value = config_str.substr(val_begin, val_end - val_begin); |
| i = val_end + 1u; |
| auto field = field_map.find(key); |
| if (field != field_map.end()) { |
| if (!field->second(opt_value)) { |
| RTC_LOG(LS_WARNING) << "Failed to read field with key: '" << key |
| << "' in trial: \"" << config_str << "\""; |
| } |
| } else { |
| RTC_LOG(LS_INFO) << "No field with key: '" << key |
| << "' (found in trial: \"" << config_str << "\")"; |
| } |
| } |
| } |
| |
| std::string EncodeStringStringMap(std::map<std::string, std::string> mapping) { |
| rtc::StringBuilder sb; |
| bool first = true; |
| for (const auto& kv : mapping) { |
| if (!first) |
| sb << ","; |
| sb << kv.first << ":" << kv.second; |
| first = false; |
| } |
| return sb.Release(); |
| } |
| } // namespace struct_parser_impl |
| |
| } // namespace webrtc |