list-of-top-level-domains/README.md

# TLD Enumerations
Lists of every [IANA TLD](http://data.iana.org/TLD/tlds-alpha-by-domain.txt) in various formats. The lists may be continuously updated using the [included utility](#updating-the-tld-lists) that pulls the latest data from IANA.

 * [CSV format](./tlds.csv)
 * [All Formats](#tld-list-formats)
 * [Updating the TLDs](#updating-the-tld-lists)
 * [Node Usage](#node-usage)
 * [PHP Usage](#php-usage)
 
## Usage
Because the lists are provided in universial CSV and JSON formats, they can be easily utilitized in most programming environments.
Additionally, for convenience, some native programming language formats have also been provided.
 * [Node Usage](#node-usage)
 * [PHP Usage](#php-usage)

### Node Usage
 * use npm to add the `tld-enum` package to your project
   ```sh
   $ npm install tld-enum --save
   ```
   
 * add the module to your source
 
   ```js
   const tldEnum = require('tld-enum');
   ```
   
 * access the list by using the `tldEnum.tldList` array
 
   ```js
   const tldEnum = require('tld-enum');
   tldEnum.tldList; //an array with every IANA TLD
   ```
   
   The following example...
   ```js
   const tldEnum = require('tld-enum');

   console.log("There are " + tldEnum.tldList.length + " IANA TLDs");

   let tldCheck;

   tldCheck = "com";
   console.log("Is '" + tldCheck + "' a real TLD?");
   if (tldEnum.tldList.indexOf(tldCheck.toLowerCase()) != -1) {
       console.log("  yes");
   } else {
       console.log("  no");
   }

   tldCheck = "somethingWeird";
   console.log("Is '" + tldCheck + "' a real TLD?");
   if (tldEnum.tldList.indexOf(tldCheck.toLowerCase()) != -1) {
       console.log("  yes");
   } else {
       console.log("  no");
   }
   ```
   
   Should produce the following output...
   ```txt
   There are 1573 IANA TLDs
   Is 'com' a real TLD?
      yes
   Is 'somethingWeird' a real TLD?
      no
   ```

### PHP Usage
 * use composer to add the `katmore/tld-enum` package to your project
   ```sh
   $ composer require katmore/tld-enum
   ```
   
 * access the list by using the `\TldEnum\TldEnum::TLD_ENUM` class constant array
 
   ```php
   <?php
   require_once __DIR__ . '/vendor/autoload.php';
   \TldEnum\TldEnum::TLD_ENUM; //an array with every IANA TLD
   ```
 
   The following example...
   ```php
   <?php
   use TldEnum\TldEnum;

   require __DIR__ . '/vendor/autoload.php';

   echo "There are " . count(TldEnum::TLD_ENUM) . " IANA TLDs\n";

   $tldCheck = "com";
   echo "Is '$tldCheck' a real TLD?\n";
   if (in_array(strtolower($tldCheck), TldEnum::TLD_ENUM)) {
       echo "  yes\n";
   } else {
       echo "  no\n";
   }

   $tldCheck = "somethingWeird";
   echo "Is '$tldCheck' a real TLD?\n";
   if (in_array(strtolower($tldCheck), TldEnum::TLD_ENUM)) {
       echo "  yes\n";
   } else {
       echo "  no\n";
   }
   ```
   
   Should produce the following output...
   ```txt
   There are 1573 IANA TLDs
   Is 'com' a real TLD?
      yes
   Is 'somethingWeird' a real TLD?
      no
   ```

## Examples
 * [php-demo.php](/examples/php-demo.php)
 * [js-demo.js](/examples/js-demo.js)

## TLD List Formats
 * **CSV**: [tlds.csv](/tlds.csv)
 
    A CSV file providing a row for each TLD with the following  three columns: *domain* (TLD), *description*, and *type*.
    
 * **PHP**: [TldEnum.php](/formats/php/TldEnum/TldEnum.php)
 
    A PHP source file providing a class with a constant having an array value comprised of every IANA TLD.
  
 * **JSON**: [tld-list.json](/formats/json/tld-list.json)
 
    A JSON formatted array comprised of every IANA TLD.
 
 * **JavaScript**: [tld-enum.js](/formats/js/tld-enum.js)
 
    An export module with a constant having an array value comprised of every IANA TLD.
    
## Updating the TLD lists
All [TLD List Formats](#tld-list-formats) can be updated with the latest data from IANA by using the [**TLD Update Utility**](/bin/update-formats.sh).

```sh
$ bin/update-formats.sh
```

### TLD Update Utility Prerequisites
 * Node.js version 8.11 or higher.
 * (Optional) PHP command-line version 7.2 or higher, to create the [PHP format class file](#tld-list-formats).

### TLD Update Utility Usage
```txt
usage:
  update-formats.sh [-h] | [-q][--skip-php]

options:
  -h,--help: Print a help message and exit.
  -q,--quiet: Print less messages.
  --force-php: Creating the PHP format file is mandatory.
  --skip-php: Always skip creating the PHP format file
```

### TLD Update Helpers
Internally, the *TLD Update Utility* uses multiple *"helper" scripts* to generate the full set of native format lists.
These individual *"helper" scripts* should not be directly executed except for development and troubleshooting purposes.

## Legal
The source code in this project is based on a fork of certain source code originally from the [incognico/list-of-top-level-domains](https://github.com/incognico/list-of-top-level-domains) project, as retrieved on 2017-12-04, which was published to the public domain.

### Copyright
TLD Enumerations - https://github.com/katmore/tld-enum

The following copyright notice applies to all resources in this project unless specifically noted otherwise:

Copyright (c) 2017-2018 Doug Bird. All Rights Reserved.

### Public Domain Resources
The following resources of this project are hereby released into the public domain:
 * [tlds.csv](/tlds.csv)
 * [formats/js/tld-enum.js](/formats/js/tld-enum.js)
 * [formats/json/tld-list.json](/formats/json/tld-list.json)
 * [formats/php/TldEnum/TldEnum.php](/formats/php/TldEnum/TldEnum.php)
 * [assets/tld-desc.csv](/assets/tld-desc.csv)

### License
All resources in the 'TLD Enumerations' project are copyrighted free software unless specifically noted otherwise.

You may redistribute and modify it under either the terms and conditions of the
"The MIT License (MIT)"; or the terms and conditions of the "GPL v3 License".
See [LICENSE](/LICENSE) and [GPLv3](/GPLv3).

These licensing conditions do not apply to any resources that have been released into the public domain; which are listed in the [**"Public Domain Resources"**](/README.md#public-domain-resources) section of the 'TLD Enumerations' project's [README](/README.md) document.