source: thomson/elec/CrO2/software/k5.cpp@ 4a558d7

/* CrO2 datassette emulator
 * Copyright 2012, Adrien Destugues <pulkomandy@pulkomandy.ath.cx>
 *
 * Distributed under the terms of the MIT licence.
 */

#include "k5.h"

#include <fstream>
#include <string.h>

K5::K5(const char* name) throw (const char*)
{
        std::ifstream stream(name, std::ifstream::in | std::ifstream::binary);

        if (!stream.is_open()) throw "Could not open file.";
        if (!stream.good()) throw "File error.";

        uint8_t byte;

        do {
                do {
                        byte = stream.get();
                        if (stream.eof())
                                return;
                } while (byte != 0x5A); // Skip pilot tone and sync bytes
                // TODO make sure this is a standard block ?

                uint8_t blktype = stream.get();
                int blksize = stream.get(); // includes checksum
                if (blksize == 0) blksize = 256;
                blksize --;
                Block* block = new Block(blksize, blktype);
                stream.read((char*)block->data, block->length);

                blocks.push_back(block);
        } while (stream.good());


        stream.close();
}


K5::Block::Block(int length, uint8_t type)
        : Tape::Block(length)
{
        this->type = type;
}

bool K5::Block::isFile() const
{
        return type == 0;
}

bool K5::Block::isControl() const
{
        return (type == 0) || (type == 0xFF);
}

const std::string K5::Block::getName() const
{
        if (isFile())
        {
                char name[12];
                memcpy(name, data, 11);
                name[11] = 0;
                return std::string(name);
        }

        if (isControl()) return std::string("EOF");
        return std::string("DATA");
}