https://github.com/wisskirchenj/simple-calculator

bash-scripting bats

Last synced: 4 months ago
JSON representation

bash toy-project to practise shell-scripting

README

# IDEA EDU Course ...

Implemented in the Track 'Introduction to Command Line and Unix Shell' of hyperskill.org's JetBrains Academy.

## Technology / External Libraries

- bash 3.2.57 on macOS
- bash testing suite BATS (bats-core, bats-assert, bats-support)

## Repository Contents

The sources of main project tasks (4 stages) and testing.

## Program description

The toy project implements a simple calculator with bash.

Stage 1: just parsing and validation of operation given.

Stage 2: enter a simple operation with blanks separated, i.e. "2 + 45" or "-2 * -45" or "4 / 2".

Stage 3: also float values are parsed and allowed - result is taken using bc (basic calculator tool from bash)

Stage 4: instead of single operation now do a CL-loop and save/append also to a history file (using tee-command).

Run tests using bats

Have fun!

## Project completion

Project was completed on 24.09.22.

## Progress

17.09.22 Project started - gitHub repo and project structure setup.

17.09.22 Stage 1 completed - parsing of calc operation line: posix regexp, functions in bash, switch the shell globbing on/off,
setup of BATS testing

21.09.22 Stage 2 completed - parse the operation and print the result - or a failed check message from parsing. teststarter added.

21.09.22 Stage 3 completed - parse and allow float values now - test cases added

24.09.22 Final Stage 4 completed - while entry CL-loop with 'quit' to exit, write and append to an operation history