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Ciconia - A New Markdown Parser for PHP

The Markdown parser for PHP5.4, it is fully extensible. Ciconia is the collection of extension, so you can replace, add or remove each parsing mechanism.

Try Demo / Docs / Supported Syntax / API Reference

• Based on John Gruber's Markdown.pl

• Github Flavored Markdown support (disabled by default)

  • Multiple underscores in words
  • New lines
  • Fenced code blocks
  • Task lists
  • Table
  • URL Autolinking

• Tested with karlcow/markdown-testsuite

Requirements

• PHP5.4+
• Composer

Installation

create a composer.json

{
    "require": {
        "kzykhys/ciconia": "~1.0.0"
    }
}

and run

php composer.phar install

Usage

Traditional Markdown

use Ciconia\Ciconia;

$ciconia = new Ciconia();
$html = $ciconia->render('Markdown is **awesome**');

// <p>Markdown is <em>awesome</em></p>

Github Flavored Markdown

To activate 6 gfm features:

use Ciconia\Ciconia;
use Ciconia\Extension\Gfm;

$ciconia = new Ciconia();
$ciconia->addExtension(new Gfm\FencedCodeBlockExtension());
$ciconia->addExtension(new Gfm\TaskListExtension());
$ciconia->addExtension(new Gfm\InlineStyleExtension());
$ciconia->addExtension(new Gfm\WhiteSpaceExtension());
$ciconia->addExtension(new Gfm\TableExtension());
$ciconia->addExtension(new Gfm\UrlAutoLinkExtension());

$html = $ciconia->render('Markdown is **awesome**');

// <p>Markdown is <em>awesome</em></p>

Options

use Ciconia\Ciconia;

$ciconia = new Ciconia();
$html = $ciconia->render(
    'Markdown is **awesome**',
    ['tabWidth' => 8, 'nestedTagLevel' => 5, 'strict' => true]
);

Rendering HTML or XHTML

Ciconia renders HTML by default. If you prefer XHTML:

use Ciconia\Ciconia;
use Ciconia\Renderer\XhtmlRenderer;

$ciconia = new Ciconia(new XhtmlRenderer());
$html = $ciconia->render('Markdown is **awesome**');

// <p>Markdown is <em>awesome</em></p>

Extend Ciconia

How to Extend

Creating extension is easy, just implement Ciconia\Extension\ExtensionInterface.

Your class must implement 2 methods.

void register(Ciconia\Markdown $markdown)

Register your callback to markdown event manager. Ciconia\Markdown is instance of Ciconia\Event\EmitterInterface (looks like Node.js's EventEmitter)

string getName()

Returns the name of your extension. If your name is the same as one of core extension, it will be replaced by your extension.

Extension Example

This sample extension turns @username mentions into links.

<?php

use Ciconia\Common\Text;
use Ciconia\Extension\ExtensionInterface;

class MentionExtension implements ExtensionInterface
{

    /**
     * {@inheritdoc}
     */
    public function register(\Ciconia\Markdown $markdown)
    {
        $markdown->on('inline', [$this, 'processMentions']);
    }

    /**
     * @param Text $text
     */
    public function processMentions(Text $text)
    {
        // Turn @username into [@username](http://example.com/user/username)
        $text->replace('/(?:^|[^a-zA-Z0-9.])@([A-Za-z]+[A-Za-z0-9]+)/', function (Text $w, Text $username) {
            return '[@' . $username . '](http://example.com/user/' . $username . ')';
        });
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'mention';
    }
}

Register your extension.

<?php

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

$ciconia = new \Ciconia\Ciconia();
$ciconia->addExtension(new MentionExtension());
echo $ciconia->render('@kzykhys my email address is [email protected]!');

Output

<p><a href="http://example.com/user/kzykhys">@kzykhys</a> my email address is [email protected]!</p>

Each extension handles string as a Text object. See API section of kzykhys/Text.

Events

Possible events are:

See the source code of Extensions

See events and timing information

Create your own Renderer

Ciconia supports HTML/XHTML output. but if you prefer customizing the output, just create a class that implements Ciconia\Renderer\RendererInterface.

See Ciconia\Renderer\RendererInterface

Command Line Interface

Usage

Basic Usage: (Outputs result to STDOUT)

ciconia /path/to/file.md

Following command saves result to file:

ciconia /path/to/file.md > /path/to/file.html

Or using pipe (On Windows in does't work):

echo "Markdown is **awesome**" | ciconia

Command Line Options

 --gfm                 Activate Gfm extensions
 --compress (-c)       Remove whitespace between HTML tags
 --format (-f)         Output format (html|xhtml) (default: "html")
 --lint (-l)           Syntax check only (lint)

Where is the script?

CLI script will be installed in vendor/bin/ciconia by default. To change the location:

Yes, there are two ways an alternate vendor binary location can be specified:

1. Setting the bin-dir configuration setting in composer.json
2. Setting the environment variable COMPOSER_BIN_DIR

http://getcomposer.org/doc/articles/vendor-binaries.md

Using PHAR version

You can also use single phar file

ciconia.phar /path/to/file.md

If you prefer access this command globally, download ciconia.phar and move it into your PATH.

mv ciconia.phar /usr/local/bin/ciconia

Testing

Install or update dev dependencies.

php composer.phar update --dev

and run phpunit

License

The MIT License

Contributing

Feel free to fork this repository and send a pull request. (A list of contributors)

Author

Kazuyuki Hayashi (@kzykhys)