Re: [OBORONA-SPAM] Re: [Dev-C++] Re: RE: need advice on data storage

[Per W. <pw...@ia...>]

If anyone wants to store binary information, there is no need to encode it
in hex or similar. Disk drives are 8-bit clean :)

/Per W

On Fri, 1 Apr 2005, Denis Korzunov wrote:

> Hi. If you want to store some binary information you can store it in
> hex or base64 or uue. Then you'll be able to work with it as with usual
> ascii strings, store it in files, etc.
> Simple example:
>
> class A
> {
>    char* binary_stuff;
>    int len;
>    ...
> public:
>    friend ostream& operator<<(ostream& os, A& a);
>    friend istream& operator>>(istream& is, A& a);
>    ...
> };
>
> ostream& operator<<(ostream& os, A& a)
> {
>    for(int i=0;i<len;++i)
>    {
>        char* c[3]; _itoa(a.binary_stuff[i],c,16);
>        os<<"0x"<<c<<" ";
>    }
>    os<<'\n';
>    return os;
> }
> istream& operator>>(istream& is, A& a)
> {
>    string temp; is=getline(temp); int i=0;
>    while(pos=temp.find(" ")!=-1){
>      a.binary_stuff[i++]=(temp.substr(0,pos)[3]-31)*16+
>                          (temp.substr(0,pos)[4]-31);
>      temp=temp.substr(pos+2);
>    return is;
> }
>
> int main()
> {
>     ifstream f1("if.txt");
>     ofstream f2("of.txt");
>     A a; f1>>a;
>     ...
>     f2<<a;
>     return 0;
> }
> --
> Best regards,
>  Denis