101 lines
2.1 KiB
C++
101 lines
2.1 KiB
C++
|
/*
|
||
|
|
* Copyright (C) 2003-2013 The Music Player Daemon Project
|
||
|
|
* http://www.musicpd.org
|
||
|
|
*
|
||
|
|
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef MPD_COMMAND_LIST_BUILDER_HXX
|
||
|
|
#define MPD_COMMAND_LIST_BUILDER_HXX
|
||
|
|
|
||
|
|
#include <glib.h>
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
class CommandListBuilder {
|
||
|
|
/**
|
||
|
|
* for when in list mode
|
||
|
|
*/
|
||
|
|
GSList *cmd_list;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* print OK after each command execution
|
||
|
|
*/
|
||
|
|
int cmd_list_OK;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* mem cmd_list consumes
|
||
|
|
*/
|
||
|
|
size_t cmd_list_size;
|
||
|
|
|
||
|
|
public:
|
||
|
|
CommandListBuilder()
|
||
|
|
:cmd_list(nullptr), cmd_list_OK(-1), cmd_list_size(0) {}
|
||
|
|
~CommandListBuilder() {
|
||
|
|
Reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Is a command list currently being built?
|
||
|
|
*/
|
||
|
|
bool IsActive() const {
|
||
|
|
assert(cmd_list_OK >= -1 && cmd_list_OK <= 1);
|
||
|
|
|
||
|
|
return cmd_list_OK >= 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Is the object in "list_OK" mode?
|
||
|
|
*/
|
||
|
|
bool IsOKMode() const {
|
||
|
|
assert(IsActive());
|
||
|
|
|
||
|
|
return (bool)cmd_list_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reset the object: delete the list and clear the mode.
|
||
|
|
*/
|
||
|
|
void Reset();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Begin building a command list.
|
||
|
|
*/
|
||
|
|
void Begin(bool ok) {
|
||
|
|
assert(cmd_list == nullptr);
|
||
|
|
assert(cmd_list_OK == -1);
|
||
|
|
|
||
|
|
cmd_list_OK = (int)ok;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return false if the list is full
|
||
|
|
*/
|
||
|
|
bool Add(const char *cmd);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Finishes the list and returns it.
|
||
|
|
*/
|
||
|
|
GSList *Commit() {
|
||
|
|
assert(IsActive());
|
||
|
|
|
||
|
|
/* for scalability reasons, we have prepended each new
|
||
|
|
command; now we have to reverse it to restore the
|
||
|
|
correct order */
|
||
|
|
return cmd_list = g_slist_reverse(cmd_list);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|