[SOLVED] Using Logical operators in Fstream binary mode.

Zssfssz · 10-31-2011, 03:16 PM

I want to take the info from a file thats a non-text file NOT it then save it in a different file. I just cant seem to get this to work could anyone help me? The other logical operators dont work ether...

Juako · 10-31-2011, 04:11 PM

Maybe the "bbe" command, kind of a "binary sed" might be useful:

Code:

bbe -e '~' inputfile -o outputfile

Zssfssz · 10-31-2011, 06:18 PM

Man how did I forget this: I'm using C++, you seem to be using something else (or Its wayabove my head, if it is C++ please explain)

Juako · 10-31-2011, 06:28 PM

No, I should apologize: didn't have into account the subject at all. Sorry about that. :-)

ntubski · 10-31-2011, 08:03 PM

Quote:

Originally Posted by Zssfssz

I want to take the info from a file thats a non-text file NOT it then save it in a different file. I just cant seem to get this to work could anyone help me? The other logical operators dont work ether...

What do you mean by "dont work"? What have you tried? Post some source code...

Zssfssz · 10-31-2011, 08:31 PM

Um... Tried XOR NOT AND I want not.
I don't know the tags so Amin help me:
ifstream asdf ("DATA.dat",ios_base::in|ios_base::binary);
ofstream qwer ("INFO.day",ios_base

ut|ios_base::binary);
That's all for the binary fstream and works fine.
I can't show you what I tried because that was painfull on this iPod.
Could someone just give me a pice of code for logical gates for Binary Fstream?
The error message is:
No match for "operator(insert symbol here)" in "(insert line here)"
My closest try is :
asdf^=zxcb //zxcb being an int vareable

ntubski · 11-01-2011, 09:14 AM

Quote:

Originally Posted by Zssfssz

ifstream asdf ("DATA.dat",ios_base::in|ios_base::binary);
...
My closest try is :
asdf^=zxcb //zxcb being an int vareable

You can't apply the bitwise operators to the streams directly. You have read to some data from the input stream, apply whatever operations you want on it, and then write the result to the output stream. The operator for bitwise NOT is "~":

Code:

int x;
in >> x;
x = ~x;
out << x;

Zssfssz · 11-01-2011, 10:42 AM

Well what the best variable for storing binary data? BINARY I'm working with a simple backup program and it needs to read the data as binary data.

ntubski · 11-01-2011, 11:50 AM

Quote:

Originally Posted by Zssfssz

Well what the best variable for storing binary data? BINARY I'm working with a simple backup program and it needs to read the data as binary data.

unsigned char (possibly a vector of them) I guess. I don't understand why you would want to backup the bitwise NOT of a file...

Zssfssz · 11-01-2011, 07:18 PM

I want to NOT it so that it's at least feebly encrypted and so Linux doesnt recognize it.