1 /**

     2  * ShaderShark

     3  * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)

     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, version 3 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. If not, see <http://www.gnu.org/licenses/>.

    16  */

    17 

    18 #pragma once

    19 

    20 #include <memory>

    21 #include <string>

    22 

    23 #include "Buffer.h"

    24 

    25 class XAttrs {

    26 public:

    27 

    28 	class Null;

    29 

    30 	class Attribute {

    31 	public:

    32 		virtual ~Attribute();

    33 		const std::string getName();

    34 		const std::string getValue(bool reload = false);

    35 		bool exists(bool reload = false);

    36 		bool missing(bool reload = false);

    37 		Attribute& operator=(const std::string& value);

    38 		Attribute& operator=(const Attribute& value);

    39 		operator std::string();

    40 		friend std::ostream& operator<<(std::ostream& s, Attribute& a);

    41 		friend std::ostream& operator>>(Attribute& a, std::ostream& s);

    42 	private:

    43 		class Impl;

    44 		std::shared_ptr<Impl> impl;

    45 		Attribute();

    46 		friend XAttrs;

    47 		friend Null;

    48 	};

    49 

    50 	class Null : public Attribute {

    51 	public:

    52 		Null();

    53 	};

    54 

    55 	XAttrs(const std::string& fileName, const std::string& nameSpace = "user");

    56 	virtual ~XAttrs();

    57 	const std::string getFileName() const;

    58 	Attribute& operator[](std::string name);

    59 	Attribute& operator[](std::size_t index);

    60 	size_t size(bool reload = false);

    61 	Attribute* begin();

    62 	Attribute* end();

    63 private:

    64 	class Impl;

    65 	std::shared_ptr<Impl> impl;

    66 	friend Attribute;

    67 };