instream_document_fasta.h

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/*
    INSTREAM_DOCUMENT_FASTA.H
    -------------------------
    Copyright (c) 2019 Andrew Trotman
    Released under the 2-clause BSD license (See:https://en.wikipedia.org/wiki/BSD_licenses)
*/
#pragma once

#include <stdint.h>

#include <string>

#include "slice.h"
#include "instream.h"

namespace JASS
    {
    /*
        CLASS INSTREAM_DOCUMENT_FASTA
        -----------------------------
    */
    class instream_document_fasta : public instream
        {
        protected:
            size_t buffer_size;                             

        protected:
            uint8_t *buffer;                                    
            uint8_t *buffer_end;                                
            size_t buffer_used;                             

        protected:
            /*
                INSTREAM_DOCUMENT_FASTA::INSTREAM_DOCUMENT_FASTA()
                --------------------------------------------------
            */
            instream_document_fasta(std::shared_ptr<instream> &source, size_t buffer_size);
            
            /*
                INSTREAM_DOCUMENT_FASTA::FETCH()
                --------------------------------
            */
            void fetch(void *buffer, size_t bytes)
                {
                buffer_end = (uint8_t *)buffer + source->fetch(buffer, bytes);
                }

        public:
            /*
                INSTREAM_DOCUMENT_FASTA::INSTREAM_DOCUMENT_FASTA()
                --------------------------------------------------
            */
            instream_document_fasta(const instream_document_fasta &previous) = delete;

            /*
                INSTREAM_DOCUMENT_FASTA::INSTREAM_DOCUMENT_FASTA()
                --------------------------------------------------
            */
            instream_document_fasta(std::shared_ptr<instream> &source);
            
            /*
                INSTREAM_DOCUMENT_FASTA::INSTREAM_DOCUMENT_FASTA()
                --------------------------------------------------
            */
            virtual ~instream_document_fasta();

            /*
                INSTREAM_DOCUMENT_FASTA::READ()
                -------------------------------
            */
            virtual void read(document &buffer);
            
            /*
                INSTREAM_DOCUMENT_FASTA::UNITTEST()
                -----------------------------------
            */
            static void unittest(void);
        } ;
}