144 lines
3.7 KiB
C++
144 lines
3.7 KiB
C++
// This file contains the json parsing components required for the config to work
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#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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#include "config.h"
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// json::array -> std::vector
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template<typename T>
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static void readVector(std::vector<T>& v, const json& j) {
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v.clear();
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v.reserve(j.size());
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std::copy(j.begin(), j.end(), std::insert_iterator<std::vector<T>>(v, v.begin()));
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}
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// std::vector -> json::array
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template<typename T>
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static void writeVector(json& j, const std::vector<T>& v) {
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j = json::array();
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std::copy(v.begin(), v.end(), std::insert_iterator<json>(j, j.begin()));
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}
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void from_json(const json& j, Config::AudioConfig& ac) {
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readVector(ac.devices, j.value("devices", json::array()));
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ac.volume = j.value("volume", 1.0);
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}
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void from_json(const json& j, Config::SampleConfig& sc) {
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sc.file = j.value("file", "");
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sc.offset = j.value("offset", 0);
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sc.length = j.value("length", 0);
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sc.volume = j.value("volume", 1.f);
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}
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void from_json(const json& j, Config::ButtonConfig& bc) {
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bc.name = j.value("name", "");
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bc.key = j.value("key", "");
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bc.width = j.value("width", Config::ButtonConfig::DEFAULTWIDTH);
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// make it possible to volume control all samples from one value
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float volume = j.value("value", 1.0);
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if(j.contains("samples")) {
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// sample liste
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readVector(bc.samples, j["samples"]);
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for(Config::SampleConfig& sc : bc.samples) {
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sc.volume *= volume;
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}
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} else if(j.contains("file")) {
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bc.samples.push_back(j); // implizit cast
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}
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}
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void from_json(const json& j, Config::ShortcutConfig& sc) {
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sc.up = j.value("up", "");
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sc.down = j.value("down", "");
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sc.left = j.value("left", "");
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sc.right = j.value("right", "");
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sc.play = j.value("play", "");
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sc.stop = j.value("stop", "");
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}
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void from_json(const json& j, Config::RootConfig& rc) {
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rc.audio = j.value<Config::AudioConfig>("audio", {});
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json barr = j.value("buttons", json::array());
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if(barr.is_array() && !barr.empty()) {
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rc.buttons.reserve(barr.size());
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for(const json& line : barr) {
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std::vector<Config::ButtonConfig> btns;
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readVector(btns, line);
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rc.buttons.push_back(btns);
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}
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}
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rc.audioPath = j.value("audioPath", "");
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rc.shortcuts = j.value("shortcuts", Config::ShortcutConfig());
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}
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void to_json(json& j, const Config::AudioConfig& ac) {
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json devarr = json::array();
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writeVector(devarr, ac.devices);
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j["devices"] = devarr;
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j["volume"] = ac.volume;
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}
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void to_json(json& j, const Config::SampleConfig& sc) {
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j["file"] = sc.file;
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if(sc.offset != 0)
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j["offset"] = sc.offset;
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if(sc.length != 0)
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j["length"] = sc.length;
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if(sc.volume != 1.f)
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j["volume"] = sc.volume;
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}
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void to_json(json& j, const Config::ButtonConfig& bc) {
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j["name"] = bc.name;
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if(!bc.key.empty())
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j["key"] = bc.key;
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if(bc.width != Config::ButtonConfig::DEFAULTWIDTH)
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j["width"] = bc.width;
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if(bc.samples.size() == 1) {
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//dont use a json array when only one sample is present (inline instead)
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if(bc.samples.at(0).isValid())
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to_json(j, bc.samples.at(0));
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} else if(!bc.samples.empty()) {
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json samples = json::array();
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writeVector(samples, bc.samples);
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j["samples"] = samples;
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}
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}
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void to_json(json& j, const Config::ShortcutConfig& sc) {
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j["up"] = sc.up;
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j["down"] = sc.down;
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j["left"] = sc.left;
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j["right"] = sc.right;
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j["play"] = sc.play;
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j["stop"] = sc.stop;
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}
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void to_json(json& j, const Config::RootConfig& rc) {
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j["audio"] = rc.audio;
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j["audioPath"] = rc.audioPath;
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json buttonarr = json::array();
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for(const std::vector<Config::ButtonConfig>& row : rc.buttons) {
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if(row.empty()) continue;
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json jsonrow = json::array();
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for(const Config::ButtonConfig& btn : row) {
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jsonrow.push_back(btn); // implicit convert btn to json
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}
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buttonarr.push_back(jsonrow);
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}
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j["buttons"] = buttonarr;
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j["shortcuts"] = rc.shortcuts;
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}
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