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#include "config.h"
#include "tomlplusplus/toml.hpp"
#include <curl/curl.h>
#include <iostream>
namespace midi_router
{
static size_t write_function(void *ptr, size_t size, size_t nmemb, std::string* data) {
data->append((char*) ptr, size * nmemb);
return size * nmemb;
}
static long curl(std::string url, std::string & response)
{
auto curl = curl_easy_init();
if (!curl) {
return -1;
}
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L);
curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 50L);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_function);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
curl_easy_perform(curl);
long response_code;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
curl_easy_cleanup(curl);
return response_code;
}
Config_Loader::Config_Loader(std::string url)
{
auto code = curl(url, m_file_contents);
if (code != 200)
{
std::cerr << "Failed to fetch config file with code " << code << "\n";
return;
}
auto toml_config = toml::parse(m_file_contents);
auto* devices = toml_config["devices"].as_table();
if (!devices)
{
std::cerr << "Expected \"devices\" to be a table.\n";
return;
}
for (auto&& [id, name] : *devices)
{
m_device_map[name.as_string()->get()] = id.str();
}
}
Device_Map const &
Config_Loader::get_device_map() const
{
return m_device_map;
}
static void
add_to_routes(Device_Id const & from_device, Route_Table & rt, toml::table & routes, Connection_Manager const & cm)
{
for (auto&& [key, types_node] : routes)
{
std::string to_device {key.str()};
auto types = types_node.as_array();
if (!types)
{
std::cerr << "Unable to parse note types for route from " << from_device << " to " << to_device << "\n";
continue;
}
for (auto & type : *types)
{
std::string type_name = type.as_string()->get();
if (type_name == "all")
{
for (auto&& [name, mt] : string2type)
{
rt[from_device][mt].push_back(cm.get_sender(to_device));
}
}
else
{
Message_Type mt = string2type.at(type.as_string()->get());
rt[from_device][mt].push_back(cm.get_sender(to_device));
}
}
}
}
static void
add_type_routes(Device_Map const & device_map, Device_Id const & from_device, Route_Table & rt, toml::table & routes, Connection_Manager const & cm)
{
for (auto&& [key, devices_node] : routes)
{
std::string type {key.str()};
auto devices = devices_node.as_array();
if (!devices)
{
std::cerr << "Unable to parse devices for route from " << from_device << " with type " << type << "\n";
continue;
}
for (auto & device : *devices)
{
Message_Type mt = string2type.at(type);
std::string to_device = device.as_string()->get();
if (to_device == "all")
{
for (auto&& [name, id] : device_map)
{
if (id == from_device) continue;
rt[from_device][mt].push_back(cm.get_sender(id));
}
}
else
{
rt[from_device][mt].push_back(cm.get_sender(to_device));
}
}
}
}
Route_Table const &
Config_Loader::compile_route_table(Connection_Manager const & cm)
{
m_route_table.clear();
auto toml_config = toml::parse(m_file_contents);
for (auto && [name, id] : m_device_map)
{
auto * to_routes = toml_config["route"]["from"][id]["to"].as_table();
if (to_routes)
{
add_to_routes(id, m_route_table, *to_routes, cm);
}
auto * type_routes = toml_config["route"]["from"][id]["type"].as_table();
if (type_routes)
{
add_type_routes(m_device_map, id, m_route_table, *type_routes, cm);
}
}
return m_route_table;
}
void
Config_Loader::print_route_table() const
{
std::cout << "Routes ===========================================================\n";
for (auto && [source_id, message_types] : m_route_table)
{
std::cout << "From " << source_id << ":\n";
for (auto && [type, targets] : message_types)
{
std::cout << "\t" << type2string.at(type) << ": ";
for (auto const & target : targets)
{
std::cout << target.get().get_id() << " ";
}
std::cout << "\n";
}
}
std::cout << "==================================================================\n";
}
} // namespace midi_router
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