Curses!

Plugin for Craft CMS

A lightweight, developer-focused profanity filter for Craft CMS. Detect and mask inappropriate content in your frontend templates using advanced pattern matching.

Features

• Twig Filters - maskProfanity and hasProfanity for template use
• Advanced Pattern Matching - Detects variations including substitutions, obscured text, and repeated letters
• Config-Based - Customize the word list via a simple config file

Requirements

• Craft CMS 4.0.0 or later
• PHP 8.0.2 or later

Installation

composer require simplygoodwork/curses

Then install the plugin from the Control Panel or run:

php craft plugin/install curses

Usage

Twig Filters

maskProfanity

Masks profanity in text using the configured mask character (default *):

{{ entry.body|maskProfanity }}
{# Output: "This is some **** text" #}

{# Override mask character for this call #}
{{ entry.body|maskProfanity('#') }}
{# Output: "This is some #### text" #}

hasProfanity

Check if text contains profanity:

{% if entry.body|hasProfanity %}
    <p class="warning">This content may contain inappropriate language.</p>
{% endif %}

{# As a function #}
{% if hasProfanity(entry.body) %}
    {# ... #}
{% endif %}

Configuration

The plugin comes with a blank list of words. To customize:

1. Copy vendor/simplygoodwork/curses/src/config.php to config/curses.php
2. Modify the settings as needed

// config/curses.php
return [
    // Character used to mask profanity (default: '*')
    // Set to an empty string '' to remove profanity entirely instead of masking
    'maskCharacter' => '*',

    // Your word list
    'profanities' => [
        'word1',
        'word2',
        // ...
    ],
];

The config file is multi-environment aware, so you can have different settings per environment.

Pattern Matching

The plugin detects various obfuscation techniques:

• Straight Match: profanity
• Substitution: pr0f@n1ty (common letter replacements like a→@, e→3, i→1)
• Obscured: p-r-o-f-a-n-i-t-y (with separators like -, _, .)
• Doubled: pprrooffaanniittyy (repeated letters)
• Combined: p-r0f@n|tty (mix of techniques)

Performance

• Request-level caching - Patterns are compiled once per request
• Efficient regex - Single-pass matching for all word variations
• No database queries - Words loaded from config file

Changelog

See CHANGELOG.md

Support

Submit an issue on GitHub.

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