6279c2dcf4
This avoids a redundant std::string construction if a key doesn't exist in the map already. e.g. data[key] requires constructing a new default instance of the value in the map (but this is wasteful, since we're already setting something into the map over top of it).
122 lines
3.7 KiB
C++
122 lines
3.7 KiB
C++
// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <array>
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#include <vector>
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#include "common/logging/log.h"
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#include "common/param_package.h"
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#include "common/string_util.h"
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namespace Common {
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constexpr char KEY_VALUE_SEPARATOR = ':';
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constexpr char PARAM_SEPARATOR = ',';
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constexpr char ESCAPE_CHARACTER = '$';
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constexpr char KEY_VALUE_SEPARATOR_ESCAPE[] = "$0";
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constexpr char PARAM_SEPARATOR_ESCAPE[] = "$1";
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constexpr char ESCAPE_CHARACTER_ESCAPE[] = "$2";
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ParamPackage::ParamPackage(const std::string& serialized) {
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std::vector<std::string> pairs;
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Common::SplitString(serialized, PARAM_SEPARATOR, pairs);
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for (const std::string& pair : pairs) {
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std::vector<std::string> key_value;
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Common::SplitString(pair, KEY_VALUE_SEPARATOR, key_value);
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if (key_value.size() != 2) {
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LOG_ERROR(Common, "invalid key pair {}", pair);
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continue;
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}
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for (std::string& part : key_value) {
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part = Common::ReplaceAll(part, KEY_VALUE_SEPARATOR_ESCAPE, {KEY_VALUE_SEPARATOR});
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part = Common::ReplaceAll(part, PARAM_SEPARATOR_ESCAPE, {PARAM_SEPARATOR});
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part = Common::ReplaceAll(part, ESCAPE_CHARACTER_ESCAPE, {ESCAPE_CHARACTER});
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}
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Set(key_value[0], key_value[1]);
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}
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}
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ParamPackage::ParamPackage(std::initializer_list<DataType::value_type> list) : data(list) {}
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std::string ParamPackage::Serialize() const {
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if (data.empty())
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return "";
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std::string result;
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for (const auto& pair : data) {
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std::array<std::string, 2> key_value{{pair.first, pair.second}};
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for (std::string& part : key_value) {
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part = Common::ReplaceAll(part, {ESCAPE_CHARACTER}, ESCAPE_CHARACTER_ESCAPE);
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part = Common::ReplaceAll(part, {PARAM_SEPARATOR}, PARAM_SEPARATOR_ESCAPE);
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part = Common::ReplaceAll(part, {KEY_VALUE_SEPARATOR}, KEY_VALUE_SEPARATOR_ESCAPE);
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}
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result += key_value[0] + KEY_VALUE_SEPARATOR + key_value[1] + PARAM_SEPARATOR;
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}
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result.pop_back(); // discard the trailing PARAM_SEPARATOR
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return result;
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}
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std::string ParamPackage::Get(const std::string& key, const std::string& default_value) const {
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auto pair = data.find(key);
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if (pair == data.end()) {
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LOG_DEBUG(Common, "key '{}' not found", key);
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return default_value;
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}
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return pair->second;
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}
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int ParamPackage::Get(const std::string& key, int default_value) const {
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auto pair = data.find(key);
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if (pair == data.end()) {
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LOG_DEBUG(Common, "key '{}' not found", key);
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return default_value;
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}
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try {
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return std::stoi(pair->second);
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} catch (const std::logic_error&) {
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LOG_ERROR(Common, "failed to convert {} to int", pair->second);
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return default_value;
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}
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}
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float ParamPackage::Get(const std::string& key, float default_value) const {
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auto pair = data.find(key);
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if (pair == data.end()) {
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LOG_DEBUG(Common, "key {} not found", key);
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return default_value;
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}
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try {
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return std::stof(pair->second);
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} catch (const std::logic_error&) {
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LOG_ERROR(Common, "failed to convert {} to float", pair->second);
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return default_value;
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}
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}
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void ParamPackage::Set(const std::string& key, const std::string& value) {
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data.insert_or_assign(key, value);
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}
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void ParamPackage::Set(const std::string& key, int value) {
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data.insert_or_assign(key, std::to_string(value));
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}
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void ParamPackage::Set(const std::string& key, float value) {
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data.insert_or_assign(key, std::to_string(value));
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}
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bool ParamPackage::Has(const std::string& key) const {
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return data.find(key) != data.end();
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}
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} // namespace Common
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