Using Flex and Bison, we created a pseudo shell resembling the linux-based shell archetype in C++. This project was done with the combined efforts of Andrew Dang and Jayden Jones. Listed below are the features we implemented/failed to implement as well as their respective contributors.
Redirecting I/O with Non-built-in Commands
The code on our separate branches successfully implemented I/O manipulation. However, we were unable to merge the code base successfully before the deadline. (Andrew Dang)
Using Pipes with Non-built-in Commands
Pipe detection worked on our branches, but combining caused unforseen errors. Thus, the functionality was left bare-bones on final submission. (Andrew Dang)
Running Non-built-in Commands in Background
& token successfully identified. Branch merge was incomplete. Code left unimplemented in submission. (Andrew Dang)
Using both Pipes and I/O Redirection, combined, with Non-built-in Commands
Unfortunately, time was of the essence and both of us decided to scrap the idea and focus on other functionalities that were more feasible. (Both)
Wildcard Matching
Same as above. (Both)
File name completion
Same as above (Both)
Tilde Expansion
Functionality complete in branch non-built-command. No implementation in master to avoid errors.(Andrew Dang)
Built-In Commands (setenv variable word, printenv, unsetenv variable, cd, alias name word, unalias name, alias, bye, infinite loop alias-expansion detection)
All built-in commands except for cd were implemented by Jayden Jones
cd done by Andrew Dang. Rest of functionality left on other branch.
Non-built-in Commands (ls, echo, more, etc...)
Combined effort and debugging resulted in completed functionality. Though majority of time and effort was Andrew Dang.
Environment Variable Expansion
In line with working on built-in commands. (Jayden Jones)
Alias Expansion
(Jayden Jones)
Shell Robustness
(Andrew Dang and Jayden Jones)
Error Handling and Reporting
(Andrew Dang and Jayden Jones)
Andrew Dang, Jayden Jones