110 lines
2.1 KiB
C++
110 lines
2.1 KiB
C++
/*
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* Copyright (C) 2003-2015 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_COMMAND_LIST_BUILDER_HXX
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#define MPD_COMMAND_LIST_BUILDER_HXX
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#include <list>
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#include <string>
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#include <assert.h>
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class CommandListBuilder {
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/**
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* print OK after each command execution
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*/
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enum class Mode {
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/**
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* Not active.
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*/
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DISABLED = -1,
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/**
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* Enabled in normal list mode.
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*/
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ENABLED = false,
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/**
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* Enabled in "list_OK" mode.
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*/
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OK = true,
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} mode;
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/**
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* for when in list mode
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*/
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std::list<std::string> list;
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/**
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* Memory consumed by the list.
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*/
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size_t size;
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public:
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CommandListBuilder()
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:mode(Mode::DISABLED), size(0) {}
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/**
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* Is a command list currently being built?
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*/
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bool IsActive() const {
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return mode != Mode::DISABLED;
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}
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/**
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* Is the object in "list_OK" mode?
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*/
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bool IsOKMode() const {
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assert(IsActive());
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return (bool)mode;
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}
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/**
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* Reset the object: delete the list and clear the mode.
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*/
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void Reset();
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/**
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* Begin building a command list.
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*/
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void Begin(bool ok) {
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assert(list.empty());
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assert(mode == Mode::DISABLED);
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mode = (Mode)ok;
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}
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/**
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* @return false if the list is full
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*/
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bool Add(const char *cmd);
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/**
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* Finishes the list and returns it.
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*/
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std::list<std::string> &&Commit() {
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assert(IsActive());
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return std::move(list);
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}
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};
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#endif
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