Method read

src/FileHandler.cpp:80–114

mc2: 0x00617D20

// mc2: 0x00617D20
std::int32_t FileHandler::read(void *data, std::int32_t size) {
    if (buffer_read == 0 && buffer_offset != 0 && this->flush() < 0) return -1;
    
    std::int32_t buffer_used = 0;
    const std::int32_t buffer_available = buffer_read - buffer_offset;
    if (size > buffer_available) {
        if (buffer_available > 0) {
            std::memcpy(data, buffer + buffer_offset, buffer_available);
            data = reinterpret_cast<std::uint8_t *>(data) + buffer_available;
            size -= buffer_available;
            buffer_used = buffer_available;
        }

        seek_pos += buffer_read;
        buffer_read = 0;
        buffer_offset = 0;

        if (size >= buffer_size) {
            // skip buffering if read would consume an entire buffer
            std::int32_t read = this->file_funcs->read(handle, data, size);
            if (read < 0) return -1;
            seek_pos += read;
            return read + buffer_used;
        }

        std::int32_t read = this->file_funcs->read(handle, buffer, buffer_size);
        if (read < 0) return -1;
        buffer_read = read;
        size = std::min(size, read);
    }

    std::memcpy(data, buffer + buffer_offset, size);
    buffer_offset += size;
    return buffer_used + size;
}

// mc2: 0x00617F60
std::int32_t FileHandler::seek(std::int32_t offset) {