CC-Grep - Another Command-Line Grep Utility

CC-Grep is a custom command-line grep utility developed as part of a coding challenge. It supports case-insensitive searches, recursive file matching, and inverted matches to display lines that do not contain the specified pattern.

Challenge URL: https://codingchallenges.fyi/challenges/challenge-grep

Features

• Case-Insensitive Search: Use the -i flag to perform case-insensitive pattern matching.
• Recursive Search: Use the -r flag to search through all files within a directory and its subdirectories.
• Inverted Match: Use the -v flag to return lines that do not contain the specified pattern.
• Command-line Interface (CLI): Simple and efficient CLI for flexible text searching.

Getting Started

These instructions will help you set up and use cc-grep on your local machine.

Prerequisites

• Go: Ensure that Go (version 1.15 or later) is installed on your system. You can download it from https://golang.org/dl/.

Installing

Clone the repository to your local machine:

git clone https://github.com/nullsploit01/cc-grep.git
cd cc-grep

Building

To compile the project, run:

go build -o ccgrep

Testing

Run tests to verify the application’s functionality:

go test ./...

Usage

To use the utility, execute the compiled binary with the desired options:

Basic Usage

Search for a pattern in a file:

./ccgrep "Rock" test_data/rockbands.txt

Flags

• Case-Insensitive Search: Use -i or --case-insensitive to ignore case.
• Recursive Search: Use -r or --recursive to search through all files in a directory and its subdirectories.
• Inverted Match: Use -v or --invert to return lines that do not contain the specified pattern.

Examples

Case-Insensitive Search

Perform a case-insensitive search for “symbol” in symbols.txt:

./ccgrep -i "symbol" test_data/symbols.txt

Recursive Search

Search recursively for the word “1985” in all files within the test_data directory and its subdirectories:

./ccgrep -r "1985" test_data

Inverted Match

Find all lines in test.txt that do not contain the word “example”:

./ccgrep -v "example" test_data/test.txt

Combine Flags

Perform a recursive, case-insensitive search for “band” in all files within test_data, returning only lines that do not contain the pattern:

./ccgrep -r -i -v "band" test_data