C++ Code Cruncher (compactor)

This project is a simple web-based tool to "crunch" C++ code by removing unnecessary whitespace and comments while preserving the code's functionality. It processes input C++ code and outputs a more compact version. I got this working for most C++ code. I am not going to work on this anymore as I used this to create some videos and now am moving on.

Motivation

I wanted to make a video with scrolling compacted C++ code so I wrote this to accomplish that. I thought others might find it useful so I posted it here.

Features

• Preserves preprocesscor directives.
• Removes multiline and single line comments.
• Preserves single character constants and string literals.
• Eliminates unnecessary whitespace, including double spaces and unrequired space between operaators.
• Skips empty lines and space characters before comments.

Known Issues

• when you have // within a string under certain conditions it will cause the text to be unaligned
• does not work with most other languages
• raw strings as of now are unsupported.

if you want to fix these issues fork and submit a pull request!

Usage

1. Open the index.html file in your web browser.
2. Enter your C++ code in the provided textarea.
3. Click the "Crunch" button.
4. View the processed code in the output section.

Code Explanation

The main functionality is provided by the JavaScript code within the index.html file:

• crunch(input): Main function that processes the input text, removing comments and crunching lines.
• removeMlComment(text): Helper function to remove multiline comments.
• chkChr(text, i, c): Helper function to check if a character matches a specified character.
• crunchLine(s): Function to process each line, handling string literals, character constants, and removing unnecessary characters.
• testchr(s, i): Helper function to test for characters that should be removed.
• crunchText(): Function to get input from the textarea, process it, and display the output.

Example

Input:

#include <iostream>

int main() {
    // This is a single line comment
    std::cout << "Hello, World!" << std::endl;  /* This is a
    multiline comment */
    char c = '\\';
    return 0;
}

Output:

#include <iostream>
int main(){std::cout <<"Hello, World!"<<std::endl;char c ='\\';return 0;}