FBB::Tty(3bobcat)

Controls echoing of characters
(libbobcat-dev_4.08.03-x.tar.gz)

2005-2018

NAME

FBB::Tty - Controls echoing of characters entered at the terminal

SYNOPSIS

#include <bobcat/tty>
Linking option: -lbobcat

DESCRIPTION

Tty(3bobcat) objects can be used to control the echoing of characters entered at the terminal (usually at /dev/tty). Directly reading from /dev/tty allows programs to read information (e.g., passwords or pass phrases) even if the standard input stream is redirected to a file. Unless redirected, std::cin is connected to /dev/tty.

Tty(3bobcat) objects may be used as stand-alone objects or (usually anonymous) Tty(3bobcat) objects may be inserted into or extracted from streams. When inserting or extracting objects the involved streams are not affected; only the echoing of characters entered at /dev/tty is manipulated.

Tty(3bobcat)'s destructor does not reset the echo-state of /dev/tty to its original value. If that is required a Tty(3bobcat) object must be created first, calling its echo(Tty::RESET) member at the appropriate time.

NAMESPACE

FBB
All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB.

INHERITS FROM

-

ENUM

The enum EchoType requests the type of echo-handling:

CONSTRUCTORS

Default copy and move constructors are available.

OVERLOADED OPERATORS

Default copy and move assignment operators are available.

MEMBER FUNCTION

EXAMPLE

#include <iostream>
#include <string>

#include <bobcat/tty>

using namespace std;
using namespace FBB;

int main()
{
    cout << "Enter some text (not echoed): " << Tty(Tty::OFF);
    string line;
    getline(cin, line);
    cout << "\n"
            "You entered: `" << line << "'\n";
    
    cout << "Enter some text (echoed): ";
    getline(cin >> Tty(Tty::ON), line);
    cout << "You entered: `" << line << "'\n";
}



FILES

bobcat/tty - defines the class interface

SEE ALSO

bobcat(7), onekey(3bobcat)

BUGS

None Reported.

DISTRIBUTION FILES

BOBCAT

Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.

COPYRIGHT

This is free software, distributed under the terms of the GNU General Public License (GPL).

AUTHOR

Frank B. Brokken (f.b.brokken@rug.nl).