plain_text_exporter.h

/*********************************************************************************************************************************************/
/*  DocWire SDK: Award-winning modern data processing in C++20. SourceForge Community Choice & Microsoft support. AI-driven processing.      */
/*  Supports nearly 100 data formats, including email boxes and OCR. Boost efficiency in text extraction, web data extraction, data mining,  */
/*  document analysis. Offline processing possible for security and confidentiality                                                          */
/*                                                                                                                                           */
/*  Copyright (c) SILVERCODERS Ltd, http://silvercoders.com                                                                                  */
/*  Project homepage: https://github.com/docwire/docwire                                                                                     */
/*                                                                                                                                           */
/*  SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-DocWire-Commercial                                                                  */
/*********************************************************************************************************************************************/
 
#ifndef DOCWIRE_PLAIN_TEXT_EXPORTER_H
#define DOCWIRE_PLAIN_TEXT_EXPORTER_H
 
#include "chain_element.h"
#include "document_elements.h"
 
namespace docwire
{
 
struct eol_sequence { std::string v; };
 
struct link_formatter
{
    std::function<std::string(const document::link&)> format_opening;
    std::function<std::string(const document::close_link&)> format_closing;
};
 
class DOCWIRE_CORE_EXPORT plain_text_exporter: public chain_element, public with_pimpl<plain_text_exporter>
{
public:
    plain_text_exporter(eol_sequence eol = eol_sequence{"\n"}, link_formatter formatter = default_link_formatter);
 
    virtual continuation operator()(message_ptr msg, const message_callbacks& emit_message) override;
 
    bool is_leaf() const override
    {
        return false;
    }
 
private:
    inline static const link_formatter default_link_formatter =
    {
        .format_opening = [](const document::link& link)
        {
            return link.url ? "<" + *link.url + ">" : "";
        },
        .format_closing = [](const document::close_link&)
        {
            return "";
        }
    };
 
    using with_pimpl<plain_text_exporter>::impl;
};
 
} // namespace docwire
 
#endif //DOCWIRE_PLAIN_TEXT_EXPORTER_H