src/ncmpcpp.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2014 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #include <cerrno>
  22 #include <clocale>
  23 #include <csignal>
  24 #include <cstring>
  25 #include <netinet/tcp.h>
  26 #include <netinet/in.h>
  27
  28 #include <boost/date_time/posix_time/posix_time.hpp>
  29 #include <boost/locale.hpp>
  30 #include <iostream>
  31 #include <fstream>
  32 #include <stdexcept>
  33
  34 #include "mpdpp.h"
  35
  36 #include "actions.h"
  37 #include "bindings.h"
  38 #include "browser.h"
  39 #include "charset.h"
  40 #include "configuration.h"
  41 #include "global.h"
  42 #include "error.h"
  43 #include "helpers.h"
  44 #include "lyrics.h"
  45 #include "outputs.h"
  46 #include "playlist.h"
  47 #include "settings.h"
  48 #include "status.h"
  49 #include "statusbar.h"
  50 #include "visualizer.h"
  51 #include "title.h"
  52 #include "utility/conversion.h"
  53
  54 namespace
  55 {
  56         std::ofstream errorlog;
  57         std::streambuf *cerr_buffer;
  58         bool run_resize_screen = false;
  59
  60 #       if !defined(WIN32)
  61         void sighandler(int sig)
  62         {
  63                 if (sig == SIGPIPE)
  64                 {
  65                         Statusbar::print("SIGPIPE (broken pipe signal) received");
  66                 }
  67                 else if (sig == SIGWINCH)
  68                 {
  69                         run_resize_screen = true;
  70                 }
  71 #               if defined(__sun) && defined(__SVR4)
  72                 // in solaris it is needed to reinstall the handler each time it's executed
  73                 signal(sig, sighandler);
  74 #               endif // __sun && __SVR4
  75         }
  76 #       endif // !WIN32
  77
  78         void do_at_exit()
  79         {
  80                 // restore old cerr buffer
  81                 std::cerr.rdbuf(cerr_buffer);
  82                 errorlog.close();
  83                 Mpd.Disconnect();
  84 #               ifndef USE_PDCURSES // destroying screen somehow crashes pdcurses
  85                 NC::destroyScreen();
  86 #               endif // USE_PDCURSES
  87                 windowTitle("");
  88         }
  89 }
  90
  91 int main(int argc, char **argv)
  92 {
  93         using Global::myScreen;
  94
  95         using Global::wHeader;
  96         using Global::wFooter;
  97
  98         using Global::VolumeState;
  99         using Global::Timer;
 100
 101         srand(time(nullptr));
 102         std::setlocale(LC_ALL, "");
 103         std::locale::global(Charset::internalLocale());
 104
 105         if (!configure(argc, argv))
 106                 return 0;
 107
 108         // always execute these commands, even if ncmpcpp use exit function
 109         atexit(do_at_exit);
 110
 111         // redirect std::cerr output to ~/.ncmpcpp/error.log file
 112         errorlog.open((Config.ncmpcpp_directory + "error.log").c_str(), std::ios::app);
 113         cerr_buffer = std::cerr.rdbuf();
 114         std::cerr.rdbuf(errorlog.rdbuf());
 115
 116         NC::initScreen("ncmpcpp ver. " VERSION, Config.colors_enabled);
 117
 118         Actions::OriginalStatusbarVisibility = Config.statusbar_visibility;
 119
 120         if (Config.design == Design::Alternative)
 121                 Config.statusbar_visibility = 0;
 122
 123         Actions::setWindowsDimensions();
 124         Actions::validateScreenSize();
 125         Actions::initializeScreens();
 126
 127         wHeader = new NC::Window(0, 0, COLS, Actions::HeaderHeight, "", Config.header_color, NC::Border::None);
 128         if (Config.header_visibility || Config.design == Design::Alternative)
 129                 wHeader->display();
 130
 131         wFooter = new NC::Window(0, Actions::FooterStartY, COLS, Actions::FooterHeight, "", Config.statusbar_color, NC::Border::None);
 132         wFooter->setGetStringHelper(Statusbar::Helpers::getString);
 133
 134         // initialize global timer
 135         Timer = boost::posix_time::microsec_clock::local_time();
 136
 137         // initialize playlist
 138         myPlaylist->switchTo();
 139
 140         // local variables
 141         bool key_pressed = false;
 142         Key input = Key::noOp;
 143         auto past = boost::posix_time::from_time_t(0);
 144
 145         /// enable mouse
 146         mouseinterval(0);
 147         if (Config.mouse_support)
 148                 mousemask(ALL_MOUSE_EVENTS, 0);
 149
 150 #       ifndef WIN32
 151         signal(SIGPIPE, sighandler);
 152         signal(SIGWINCH, sighandler);
 153         // ignore Ctrl-C
 154         sigignore(SIGINT);
 155 #       endif // !WIN32
 156
 157         while (!Actions::ExitMainLoop)
 158         {
 159                 try
 160                 {
 161                         if (!Mpd.Connected())
 162                         {
 163                                 wFooter->clearFDCallbacksList();
 164                                 try
 165                                 {
 166                                         Mpd.Connect();
 167                                         if (Mpd.Version() < 16)
 168                                         {
 169                                                 Mpd.Disconnect();
 170                                                 throw MPD::ClientError(MPD_ERROR_STATE, "MPD < 0.16.0 is not supported", false);
 171                                         }
 172                                         wFooter->addFDCallback(Mpd.GetFD(), Statusbar::Helpers::mpd);
 173                                         Status::clear(); // reset local status info
 174                                         Status::update(-1); // we need info about new connection
 175
 176                                         if (Config.jump_to_now_playing_song_at_start)
 177                                         {
 178                                                 int curr_pos = Status::get().currentSongPosition();
 179                                                 if  (curr_pos >= 0)
 180                                                         myPlaylist->main().highlight(curr_pos);
 181                                         }
 182
 183                                         // Set TCP_NODELAY on the tcp socket as we are using write-write-read pattern
 184                                         // a lot (idle - write, noidle - write, then read the result of noidle), which
 185                                         // kills the performance.
 186                                         int flag = 1;
 187                                         setsockopt(Mpd.GetFD(), IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(flag));
 188
 189                                         // go to startup screen
 190                                         if (Config.startup_screen_type != myScreen->type())
 191                                                 toScreen(Config.startup_screen_type)->switchTo();
 192                                         myScreen->refresh();
 193
 194                                         myBrowser->fetchSupportedExtensions();
 195 #                                       ifdef ENABLE_OUTPUTS
 196                                         myOutputs->FetchList();
 197 #                                       endif // ENABLE_OUTPUTS
 198 #                                       ifdef ENABLE_VISUALIZER
 199                                         myVisualizer->ResetFD();
 200                                         if (myScreen == myVisualizer)
 201                                                 myVisualizer->SetFD();
 202                                         myVisualizer->FindOutputID();
 203 #                                       endif // ENABLE_VISUALIZER
 204
 205                                         Statusbar::printf("Connected to %1%", Mpd.GetHostname());
 206                                 }
 207                                 catch (MPD::ClientError &e)
 208                                 {
 209                                         Status::handleClientError(e);
 210                                 }
 211                         }
 212
 213                         // update timer, status if necessary etc.
 214                         Status::trace(!key_pressed, true);
 215
 216                         if (run_resize_screen)
 217                         {
 218                                 Actions::resizeScreen(true);
 219                                 run_resize_screen = false;
 220                         }
 221
 222                         // header stuff
 223                         if ((myScreen == myPlaylist || myScreen == myBrowser || myScreen == myLyrics)
 224                         &&  (Timer - past > boost::posix_time::milliseconds(500))
 225                         )
 226                         {
 227                                 drawHeader();
 228                                 past = Timer;
 229                         }
 230
 231                         if (key_pressed)
 232                                 myScreen->refreshWindow();
 233                         input = Key::read(*wFooter);
 234                         key_pressed = input != Key::noOp;
 235
 236                         if (!key_pressed)
 237                                 continue;
 238
 239                         // The reason we want to update timer here is that if the timer is updated
 240                         // in Status::trace, then Key::read usually blocks for 500ms and if key is
 241                         // pressed 400ms after Key::read was called, we end up with Timer that is
 242                         // ~400ms inaccurate. On the other hand, if keys are being pressed, we don't
 243                         // want to update timer in both Status::trace and here. Therefore we update
 244                         // timer in Status::trace only if there was no recent input.
 245                         Timer = boost::posix_time::microsec_clock::local_time();
 246
 247                         try
 248                         {
 249                                 auto k = Bindings.get(input);
 250                                 std::any_of(k.first, k.second, boost::bind(&Binding::execute, _1));
 251                         }
 252                         catch (ConversionError &e)
 253                         {
 254                                 Statusbar::printf("Couldn't convert value \"%1%\" to target type", e.value());
 255                         }
 256                         catch (OutOfBounds &e)
 257                         {
 258                                 Statusbar::printf("Error: %1%", e.errorMessage());
 259                         }
 260
 261                         if (myScreen == myPlaylist)
 262                                 myPlaylist->EnableHighlighting();
 263                 }
 264                 catch (MPD::ClientError &e)
 265                 {
 266                         Status::handleClientError(e);
 267                 }
 268                 catch (MPD::ServerError &e)
 269                 {
 270                         Status::handleServerError(e);
 271                 }
 272                 catch (std::exception &e)
 273                 {
 274                         Statusbar::printf("Unexpected error: %1%", e.what());
 275                 }
 276         }
 277         return 0;
 278 }