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radio-cli.cpp
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radio-cli.cpp
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#include <oceanus.h>
#include <iostream>
#include <iomanip>
#include <regex>
#include <map>
#include <unistd.h>
using namespace std;
vector<string>
split(const string& s, string re_str = "\\s+") {
vector<string> elems;
regex re(re_str);
sregex_token_iterator iter(s.begin(), s.end(), re, -1);
sregex_token_iterator end;
while (iter != end) {
if (iter->length()) {
elems.push_back(*iter);
}
++iter;
}
return elems;
}
class RadioCLI {
public:
RadioCLI(const char* device_name);
void run();
private:
Oceanus::Radio _radio;
bool input_available();
void handle_command(string command);
using command_handler = void (RadioCLI::*)(vector<string> arguments);
map<string, command_handler> _command_handlers;
// Commands
void dab(vector<string>);
void fm(vector<string>);
void volume(vector<string>);
void scan(vector<string>);
};
RadioCLI::RadioCLI(const char* device_name)
: _radio(device_name)
{
_command_handlers["dab"] = &RadioCLI::dab;
_command_handlers["fm"] = &RadioCLI::fm;
_command_handlers["volume"] = &RadioCLI::volume;
_command_handlers["scan"] = &RadioCLI::scan;
_radio.set_volume(10);
_radio.set_stereo_mode(Oceanus::Radio::AUTO_DETECT_STEREO);
_radio.play_dab(42);
_radio.get_programs();
}
bool
RadioCLI::input_available()
{
struct timeval tv;
fd_set fds;
tv.tv_sec = tv.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(0, &fds);
return ::select(1, &fds, 0, 0, &tv) == 1;
}
void
RadioCLI::handle_command(string command)
{
cout << "Command: " << command << endl;
auto args = split(command);
if (args.size()) {
auto command = args[0];
args.erase(args.begin());
if (_command_handlers.count(command)) {
auto handler = _command_handlers[command];
(this->*handler)(args);
} else {
cout << "Unknown command: " << command << endl;
}
}
}
void
RadioCLI::dab(vector<string> args)
{
unsigned channel = stoul(args.at(0));
_radio.play_dab(channel);
}
void
RadioCLI::fm(vector<string> args)
{
unsigned frequency = stof(args.at(0));
_radio.play_fm(frequency);
}
void
RadioCLI::volume(vector<string> args)
{
unsigned volume = stoul(args.at(0));
_radio.set_volume(volume);
}
void
RadioCLI::scan(vector<string>)
{
_radio.reset(Oceanus::Radio::CLEAR_DATABASE);
_radio.auto_search(0, 200);
_radio.get_programs();
}
void
RadioCLI::run()
{
while (true) {
_radio.handle_status();
_radio.handle_mot();
usleep(100000);
if (input_available()) {
string command;
getline(cin, command);
if (cin.eof() || (command == "quit")) {
break;
}
handle_command(command);
}
}
}
int
main(int argc, char* argv[])
{
if (argc != 2) {
throw invalid_argument("Missing command line argument, expecting serial device name");
}
RadioCLI cli(argv[1]);
cli.run();
}