I'm trying to code a basic shell in C++ that displays a prompt ( $
) and waits for user input. I can get that down, but the problem is the program ends after the first execution of the user's input.
I have classes for the prompt and commands. The prompt class displays the prompt, gets user input, parses it, and calls the appropriate command->execute() functions. After the first command execution, how do I get the program to return to displaying the command prompt and asking for input? And how do I safely exit the entire program when the user types exit
?
Below is a snippet of what happens when I run. What I want is that for the $
to display again (and wait for input), after the hello
.
$ ls -a && echo hello
. a.log a.out command.h or.h separate.h tmp.log
.. and.h base.h main.cpp Prompt.h tmp.cpp tst
hello
I guess what I'm wondering is, how do I create my own exit function that causes main to return? Thanks!
I decided to just use a function that calls std::exit(0). This may/may not be ideal, but since my program is small I'm hoping it should be fine.
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