DefaultTranslationParser.hxx

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// SPDX-FileCopyrightText: 2025 Florent Rougon
// SPDX-License-Identifier: GPL-2.0-or-later

 
#pragma once
 
#include <string>
 
#include <simgear/xml/easyxml.hxx>
 
#include "TranslationResource.hxx"
 
namespace flightgear
{

 
class DefaultTranslationParser : public XMLVisitor
{
public:
    DefaultTranslationParser(TranslationResource* resource);
 
protected:
    void startXML () override;
    void endXML   () override;
    void startElement (const char * name, const XMLAttributes &atts) override;
    void endElement (const char * name) override;
    void data (const char * s, int len) override;
    void warning (const char * message, int line, int column) override;
 
private:
    bool asBoolean(const std::string& str);
    [[noreturn]] void parseError(const std::string& message);
    void startElementInsideMeta(const std::string& name);
    void checkIfFormatIsSupported();

    TranslationResource* _resource;
    std::string _text;            
    std::string _stringTagName;   
    bool _hasPlural = false;      
    std::map<std::string, int> _nextIndex;
 
    // Our parser is a state machine
    enum class State {
        LOOKING_FOR_RESOURCE_ELEMENT, // this is the root element
        LOOKING_FOR_META_ELEMENT,
        READING_META_ELEMENT,
        READING_FILE_TYPE_ELEMENT,
        READING_FORMAT_VERSION_ELEMENT,
        LOOKING_FOR_STRINGS_ELEMENT,
        READING_STRINGS_ELEMENT,
        READING_TRANSLATABLE_STRING,
        AFTER_STRINGS_ELEMENT,
    };
 
    State _state = State::LOOKING_FOR_RESOURCE_ELEMENT;

    std::string _fileType;
    bool _foundFileType = false;
    std::string _formatVersion;
    bool _foundFormatVersion = false;
};
 
} // namespace flightgear