Phone Number Range Finder By Provider

Overview

This Go project is designed to process a CSV file containing phone numbers and their associated providers. It identifies ranges of consecutive phone numbers for each provider and outputs the results into a new CSV file. The output includes the start and end of each range, the provider's name, and the length of the range.

Features

Reads phone numbers and providers from a CSV file.
Identifies consecutive number ranges for each provider.
Outputs the ranges to a new CSV file with range details.
Handles large datasets efficiently.

Requirements

Go (version 1.15 or later) if you want to run the program from source.

Installation

if you want to run the program from source :

Clone the repository to your local machine:

git clone https://github.com/fetristan/phone-number-range-finder-by-provider.git
cd phone-number-range-finder-by-provider

Else, download the latest release from the releases page.

Usage

Place your input CSV file in the project directory as did.csv. Ensure it follows the format number;provider.
Run the program:

From source :
```
go run main.go
```
From binary : Execute the binary file.

Check the generated ranges_export.csv in the project directory for the output.

Input File Format

The input CSV file should have the following format:

number;provider
number;provider
...

Example:

33123456789;orange
33987654321;sfr
...

Output File Format

The output CSV file will have the following columns:

Start: Starting number of the range.
End: Ending number of the range.
Provider: Provider name.
Range Length: Number of phone numbers in the range.

Contributing

Contributions to this project are welcome. Please ensure to update tests as appropriate.