/* * Copyright (C) 2003-2015 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_CONFIG_BLOCK_HXX #define MPD_CONFIG_BLOCK_HXX #include "check.h" #include "Param.hxx" #include "Compiler.h" #include #include class Error; class AllocatedPath; struct BlockParam { std::string name; std::string value; int line; /** * This flag is false when nobody has queried the value of * this option yet. */ mutable bool used; gcc_nonnull_all BlockParam(const char *_name, const char *_value, int _line=-1) :name(_name), value(_value), line(_line), used(false) {} gcc_pure int GetIntValue() const; gcc_pure unsigned GetUnsignedValue() const; gcc_pure bool GetBoolValue() const; }; struct ConfigBlock { /** * The next #ConfigBlock with the same name. The destructor * deletes the whole chain. */ ConfigBlock *next; int line; std::vector block_params; /** * This flag is false when nobody has queried the value of * this option yet. */ bool used; explicit ConfigBlock(int _line=-1) :next(nullptr), line(_line), used(false) {} ConfigBlock(const ConfigBlock &) = delete; ~ConfigBlock(); ConfigBlock &operator=(const ConfigBlock &) = delete; /** * Determine if this is a "null" instance, i.e. an empty * object that was synthesized and not loaded from a * configuration file. */ bool IsNull() const { return line < 0; } gcc_nonnull_all void AddBlockParam(const char *_name, const char *_value, int _line=-1) { block_params.emplace_back(_name, _value, _line); } gcc_nonnull_all gcc_pure const BlockParam *GetBlockParam(const char *_name) const; gcc_pure const char *GetBlockValue(const char *name, const char *default_value=nullptr) const; /** * Same as config_get_path(), but looks up the setting in the * specified block. */ AllocatedPath GetBlockPath(const char *name, const char *default_value, Error &error) const; AllocatedPath GetBlockPath(const char *name, Error &error) const; gcc_pure int GetBlockValue(const char *name, int default_value) const; gcc_pure unsigned GetBlockValue(const char *name, unsigned default_value) const; gcc_pure bool GetBlockValue(const char *name, bool default_value) const; }; #endif