55251c3d49
This is similar to the field trial parser but it uses a normal struct with normal fields as underlying storage. This makes it easier to understand and use as only the encoding and parsing uses non- standard constructs. Additionally, it makes it easier to use the struct as a regular config struct when the values are not set using field trials. Bug: webrtc:9883 Change-Id: I5b16c2a71875b6f478383decff18fbaa62bc404a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/145203 Reviewed-by: Jonas Olsson <jonasolsson@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28810}
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/*
|
|
* 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
|