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ncmpcpp/src/bindings.cpp

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/***************************************************************************
* Copyright (C) 2008-2012 by Andrzej Rybczak *
* electricityispower@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <fstream>
#include <iostream>
#include "global.h"
#include "bindings.h"
#include "utility/string.h"
#include "utility/wide_string.h"
BindingsConfiguration Bindings;
Key Key::noOp = Key(ERR, NCurses);
namespace {//
Key stringToSpecialKey(const std::string &s)
{
Key result = Key::noOp;
if (!s.compare("mouse"))
result = Key(KEY_MOUSE, Key::NCurses);
else if (!s.compare("up"))
result = Key(KEY_UP, Key::NCurses);
else if (!s.compare("down"))
result = Key(KEY_DOWN, Key::NCurses);
else if (!s.compare("page_up"))
result = Key(KEY_PPAGE, Key::NCurses);
else if (!s.compare("page_down"))
result = Key(KEY_NPAGE, Key::NCurses);
else if (!s.compare("home"))
result = Key(KEY_HOME, Key::NCurses);
else if (!s.compare("end"))
result = Key(KEY_END, Key::NCurses);
else if (!s.compare("space"))
result = Key(KEY_SPACE, Key::Standard);
else if (!s.compare("enter"))
result = Key(KEY_ENTER, Key::Standard);
else if (!s.compare("insert"))
result = Key(KEY_IC, Key::NCurses);
else if (!s.compare("delete"))
result = Key(KEY_DC, Key::NCurses);
else if (!s.compare("left"))
result = Key(KEY_LEFT, Key::NCurses);
else if (!s.compare("right"))
result = Key(KEY_RIGHT, Key::NCurses);
else if (!s.compare("tab"))
result = Key(KEY_TAB, Key::Standard);
else if (!s.compare("shift_tab"))
result = Key(KEY_SHIFT_TAB, Key::NCurses);
else if (!s.compare(0, 5, "ctrl_") && s.length() > 5 && s[5] >= 'a' && s[5] <= 'z')
result = Key(KEY_CTRL_A + (s[5] - 'a'), Key::Standard);
else if (s.length() > 1 && s[0] == 'f')
{
int n = atoi(s.c_str() + 1);
if (n >= 1 && n <= 12)
result = Key(KEY_F1 + n - 1, Key::NCurses);
}
else if (!s.compare("backspace"))
result = Key(KEY_BACKSPACE, Key::NCurses);
else if (!s.compare("backspace_2"))
result = Key(KEY_BACKSPACE_2, Key::Standard);
return result;
}
Key stringToKey(const std::string &s)
{
Key result = stringToSpecialKey(s);
if (result == Key::noOp)
{
std::wstring ws = ToWString(s);
if (ws.length() == 1)
result = Key(ws[0], Key::Standard);
}
return result;
}
template <typename F>
Action *parseActionLine(const std::string &line, F error)
{
Action *result = 0;
size_t i = 0;
for (; i < line.size() && !isspace(line[i]); ++i) { }
if (i == line.size()) // only action name
result = Action::Get(line);
else // there is something else
{
std::string action_name = line.substr(0, i);
if (action_name == "push_character")
{
// push single character into input queue
std::string arg = getEnclosedString(line, '"', '"', 0);
Key k = stringToSpecialKey(arg);
if (k != Key::noOp)
result = new PushCharacters(&Global::wFooter, std::vector<int>{ k.getChar() });
else
error() << "invalid character passed to push_character: '" << arg << "'\n";
}
else if (action_name == "push_characters")
{
// push sequence of characters into input queue
std::string arg = getEnclosedString(line, '"', '"', 0);
if (!arg.empty())
{
std::vector<int> queue(arg.begin(), arg.end());
// if char is signed, cancel 1s from char -> int conversion
for (auto it = arg.begin(); it != arg.end(); ++it)
*it &= 0xff;
result = new PushCharacters(&Global::wFooter, std::move(queue));
}
else
error() << "empty argument passed to push_characters\n";
}
else if (action_name == "require_runnable")
{
// require that given action is runnable
std::string arg = getEnclosedString(line, '"', '"', 0);
Action *action = Action::Get(arg);
if (action)
result = new RequireRunnable(action);
else
error() << "unknown action passed to require_runnable: '" << arg << "'\n";
}
}
return result;
}
}
Key Key::read(NC::Window &w)
{
Key result = noOp;
std::string tmp;
int input;
while (true)
{
input = w.readKey();
if (input == ERR)
break;
if (input > 255)
{
result = Key(input, NCurses);
break;
}
else
{
wchar_t wc;
tmp += input;
size_t conv_res = mbrtowc(&wc, tmp.c_str(), MB_CUR_MAX, 0);
if (conv_res == size_t(-1)) // incomplete multibyte character
continue;
else if (conv_res == size_t(-2)) // garbage character sequence
break;
else // character complete
{
result = Key(wc, Standard);
break;
}
}
}
return result;
}
bool BindingsConfiguration::read(const std::string &file)
{
bool result = true;
std::ifstream f(file);
if (!f.is_open())
return result;
size_t line_no = 0;
bool key_def_in_progress = false;
Key key = Key::noOp;
Binding::ActionChain actions;
std::string line, strkey;
auto error = [&]() -> std::ostream & {
std::cerr << file << ":" << line_no << ": ";
key_def_in_progress = false;
result = false;
return std::cerr;
};
auto bind_key_def = [&]() -> bool {
if (!actions.empty())
{
bind(key, actions);
actions.clear();
return true;
}
else
{
error() << "definition of key '" << strkey << "' cannot be empty.\n";
return false;
}
};
while (!f.eof() && ++line_no)
{
getline(f, line);
if (line.empty() || line[0] == '#')
continue;
if (!line.compare(0, 7, "def_key")) // beginning of key definition
{
if (key_def_in_progress)
{
if (!bind_key_def())
break;
}
key_def_in_progress = true;
strkey = getEnclosedString(line, '"', '"', 0);
key = stringToKey(strkey);
if (key == Key::noOp)
{
error() << "invalid key: '" << strkey << "'\n";
break;
}
}
else if (isspace(line[0])) // name of action to be bound
{
trim(line);
Action *action = parseActionLine(line, error);
if (action)
actions.push_back(action);
else
{
error() << "unknown action: '" << line << "'\n";
break;
}
}
}
if (key_def_in_progress)
bind_key_def();
f.close();
return result;
}
void BindingsConfiguration::generateDefaults()
{
Key k = Key::noOp;
if (notBound(k = stringToKey("mouse")))
bind(k, aMouseEvent);
if (notBound(k = stringToKey("up")))
bind(k, aScrollUp);
if (notBound(k = stringToKey("down")))
bind(k, aScrollDown);
if (notBound(k = stringToKey("[")))
bind(k, aScrollUpAlbum);
if (notBound(k = stringToKey("]")))
bind(k, aScrollDownAlbum);
if (notBound(k = stringToKey("{")))
bind(k, aScrollUpArtist);
if (notBound(k = stringToKey("}")))
bind(k, aScrollDownArtist);
if (notBound(k = stringToKey("page_up")))
bind(k, aPageUp);
if (notBound(k = stringToKey("page_down")))
bind(k, aPageDown);
if (notBound(k = stringToKey("home")))
bind(k, aMoveHome);
if (notBound(k = stringToKey("end")))
bind(k, aMoveEnd);
if (notBound(k = stringToKey("space")))
bind(k, aPressSpace);
if (notBound(k = stringToKey("enter")))
bind(k, aPressEnter);
if (notBound(k = stringToKey("delete")))
bind(k, aDelete);
if (notBound(k = stringToKey("right")))
{
bind(k, aNextColumn);
bind(k, aSlaveScreen);
bind(k, aVolumeUp);
}
if (notBound(k = stringToKey("+")))
bind(k, aVolumeUp);
if (notBound(k = stringToKey("left")))
{
bind(k, aPreviousColumn);
bind(k, aMasterScreen);
bind(k, aVolumeDown);
}
if (notBound(k = stringToKey("-")))
bind(k, aVolumeDown);
if (notBound(k = stringToKey("tab")))
bind(k, aNextScreen);
if (notBound(k = stringToKey("shift_tab")))
bind(k, aPreviousScreen);
if (notBound(k = stringToKey("f1")))
bind(k, aShowHelp);
if (notBound(k = stringToKey("1")))
bind(k, aShowPlaylist);
if (notBound(k = stringToKey("2")))
bind(k, aShowBrowser);
if (notBound(k = stringToKey("3")))
bind(k, aShowSearchEngine);
if (notBound(k = stringToKey("4")))
bind(k, aShowMediaLibrary);
if (notBound(k = stringToKey("5")))
bind(k, aShowPlaylistEditor);
if (notBound(k = stringToKey("6")))
bind(k, aShowTagEditor);
if (notBound(k = stringToKey("7")))
bind(k, aShowOutputs);
if (notBound(k = stringToKey("8")))
bind(k, aShowVisualizer);
if (notBound(k = stringToKey("=")))
bind(k, aShowClock);
if (notBound(k = stringToKey("@")))
bind(k, aShowServerInfo);
if (notBound(k = stringToKey("s")))
bind(k, aStop);
if (notBound(k = stringToKey("p")))
bind(k, aPause);
if (notBound(k = stringToKey(">")))
bind(k, aNext);
if (notBound(k = stringToKey("<")))
bind(k, aPrevious);
if (notBound(k = stringToKey("ctrl_h")))
{
bind(k, aJumpToParentDirectory);
bind(k, aReplaySong);
}
if (notBound(k = stringToKey("backspace")))
{
bind(k, aJumpToParentDirectory);
bind(k, aReplaySong);
}
if (notBound(k = stringToKey("backspace_2")))
{
bind(k, aJumpToParentDirectory);
bind(k, aReplaySong);
}
if (notBound(k = stringToKey("f")))
bind(k, aSeekForward);
if (notBound(k = stringToKey("b")))
bind(k, aSeekBackward);
if (notBound(k = stringToKey("r")))
bind(k, aToggleRepeat);
if (notBound(k = stringToKey("z")))
bind(k, aToggleRandom);
if (notBound(k = stringToKey("y")))
{
bind(k, aSaveTagChanges);
bind(k, aStartSearching);
bind(k, aToggleSingle);
}
if (notBound(k = stringToKey("R")))
bind(k, aToggleConsume);
if (notBound(k = stringToKey("Y")))
bind(k, aToggleReplayGainMode);
if (notBound(k = stringToKey("t")))
bind(k, aToggleSpaceMode);
if (notBound(k = stringToKey("T")))
bind(k, aToggleAddMode);
if (notBound(k = stringToKey("|")))
bind(k, aToggleMouse);
if (notBound(k = stringToKey("#")))
bind(k, aToggleBitrateVisibility);
if (notBound(k = stringToKey("Z")))
bind(k, aShuffle);
if (notBound(k = stringToKey("x")))
bind(k, aToggleCrossfade);
if (notBound(k = stringToKey("X")))
bind(k, aSetCrossfade);
if (notBound(k = stringToKey("u")))
bind(k, aUpdateDatabase);
if (notBound(k = stringToKey("ctrl_v")))
bind(k, aSortPlaylist);
if (notBound(k = stringToKey("ctrl_r")))
bind(k, aReversePlaylist);
if (notBound(k = stringToKey("ctrl_f")))
bind(k, aApplyFilter);
if (notBound(k = stringToKey("/")))
{
bind(k, aFind);
bind(k, aFindItemForward);
}
if (notBound(k = stringToKey("?")))
{
bind(k, aFind);
bind(k, aFindItemBackward);
}
if (notBound(k = stringToKey(".")))
bind(k, aNextFoundItem);
if (notBound(k = stringToKey(",")))
bind(k, aPreviousFoundItem);
if (notBound(k = stringToKey("w")))
bind(k, aToggleFindMode);
if (notBound(k = stringToKey("e")))
{
bind(k, aEditSong);
bind(k, aEditLibraryTag);
bind(k, aEditLibraryAlbum);
bind(k, aEditDirectoryName);
bind(k, aEditPlaylistName);
bind(k, aEditLyrics);
}
if (notBound(k = stringToKey("i")))
bind(k, aShowSongInfo);
if (notBound(k = stringToKey("I")))
bind(k, aShowArtistInfo);
if (notBound(k = stringToKey("g")))
bind(k, aJumpToPositionInSong);
if (notBound(k = stringToKey("l")))
bind(k, aShowLyrics);
if (notBound(k = stringToKey("v")))
bind(k, aReverseSelection);
if (notBound(k = stringToKey("V")))
bind(k, aRemoveSelection);
if (notBound(k = stringToKey("B")))
bind(k, aSelectAlbum);
if (notBound(k = stringToKey("a")))
bind(k, aAddSelectedItems);
if (notBound(k = stringToKey("c")))
{
bind(k, aClearPlaylist);
bind(k, aClearMainPlaylist);
}
if (notBound(k = stringToKey("C")))
{
bind(k, aCropPlaylist);
bind(k, aCropMainPlaylist);
}
if (notBound(k = stringToKey("m")))
{
bind(k, aMoveSortOrderUp);
bind(k, aMoveSelectedItemsUp);
}
if (notBound(k = stringToKey("n")))
{
bind(k, aMoveSortOrderDown);
bind(k, aMoveSelectedItemsDown);
}
if (notBound(k = stringToKey("M")))
bind(k, aMoveSelectedItemsTo);
if (notBound(k = stringToKey("A")))
bind(k, aAdd);
if (notBound(k = stringToKey("S")))
bind(k, aSavePlaylist);
if (notBound(k = stringToKey("o")))
bind(k, aJumpToPlayingSong);
if (notBound(k = stringToKey("G")))
{
bind(k, aJumpToBrowser);
bind(k, aJumpToPlaylistEditor);
}
if (notBound(k = stringToKey("~")))
bind(k, aJumpToMediaLibrary);
if (notBound(k = stringToKey("E")))
bind(k, aJumpToTagEditor);
if (notBound(k = stringToKey("U")))
bind(k, aTogglePlayingSongCentering);
if (notBound(k = stringToKey("P")))
bind(k, aToggleDisplayMode);
if (notBound(k = stringToKey("\\")))
bind(k, aToggleInterface);
if (notBound(k = stringToKey("!")))
bind(k, aToggleSeparatorsBetweenAlbums);
if (notBound(k = stringToKey("L")))
bind(k, aToggleLyricsFetcher);
if (notBound(k = stringToKey("F")))
bind(k, aToggleFetchingLyricsInBackground);
if (notBound(k = stringToKey("ctrl_l")))
bind(k, aToggleScreenLock);
if (notBound(k = stringToKey("`")))
{
bind(k, aToggleBrowserSortMode);
bind(k, aToggleLibraryTagType);
bind(k, aRefetchLyrics);
bind(k, aRefetchArtistInfo);
bind(k, aAddRandomItems);
}
if (notBound(k = stringToKey("ctrl_p")))
bind(k, aSetSelectedItemsPriority);
if (notBound(k = stringToKey("q")))
bind(k, aQuit);
if (notBound(k = stringToKey("-")))
bind(k, aVolumeDown);
}