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✏️ Editing: PrefixTranslator.h

/*
 *  Phusion Passenger - https://www.phusionpassenger.com/
 *  Copyright (c) 2017-2025 Asynchronous B.V.
 *
 *  "Passenger", "Phusion Passenger" and "Union Station" are registered
 *  trademarks of Asynchronous B.V.
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 */
#ifndef _PASSENGER_CONFIG_KIT_PREFIX_TRANSLATOR_H_
#define _PASSENGER_CONFIG_KIT_PREFIX_TRANSLATOR_H_

#include <ConfigKit/Translator.h>
#include <cassert>

namespace Passenger {
namespace ConfigKit {

using namespace std;

/**
 * A translator that translates keys by adding a prefix.
 *
 * You can learn more about translators in the ConfigKit README, section
 * "The special problem of overlapping configuration names and translation".
 */
class PrefixTranslator: public Translator {
private:
	string prefix;
	bool finalized;

public:
	PrefixTranslator()
		: finalized(false)
		{ }

PrefixTranslator(const string &_prefix)
		: prefix(_prefix),
		  finalized(true)
		{ }

void setPrefixAndFinalize(const string &_prefix) {
		assert(!finalized);
		prefix = _prefix;
		finalized = true;
	}

bool isFinalized() const {
		return finalized;
	}

virtual Json::Value translate(const Json::Value &doc) const {
		assert(finalized);
		return Translator::translate(doc);
	}

virtual Json::Value reverseTranslate(const Json::Value &doc) const {
		assert(finalized);
		return Translator::reverseTranslate(doc);
	}

virtual vector<Error> translate(const vector<Error> &errors) const {
		assert(finalized);
		return Translator::translate(errors);
	}

virtual vector<Error> reverseTranslate(const vector<Error> &errors) const {
		assert(finalized);
		return Translator::reverseTranslate(errors);
	}

virtual string translateOne(const StaticString &key) const {
		assert(finalized);
		if (key.substr(0, prefix.size()) == prefix) {
			return key.substr(prefix.size());
		} else {
			return key;
		}
	}

virtual string reverseTranslateOne(const StaticString &key) const {
		assert(finalized);
		if (key.substr(0, prefix.size()) != prefix) {
			return prefix + key;
		} else {
			return key;
		}
	}
};

} // namespace ConfigKit
} // namespace Passenger

#endif /* _PASSENGER_CONFIG_KIT_PREFIX_TRANSLATOR_H_ */

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