miniflux-legacy/docs/full-article-download.markdown

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Full article download
=====================
For feeds that accept only a summary, it's possible to download the full content directly from the original website.
How the content grabber works?
------------------------------
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1. Try with rules first (Xpath patterns) for the domain name
2. Try to find the text content by using common attributes for class and id
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3. Finally, if nothing is found, the feed content is displayed
However the content grabber doesn't work very well with all websites.
Especially websites that use a lot of Javascript to generate the content.
**The best results are obtained with Xpath rules file.**
How to write a grabber rules file?
----------------------------------
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Miniflux will try first to find the file in the [default bundled rules directory](https://github.com/miniflux/miniflux-legacy/tree/master/vendor/fguillot/picofeed/lib/PicoFeed/Rules), then it will try to load your custom rules.
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You can create custom rules, by adding a PHP file to the directory `rules`. The filename must be the domain name with the suffix `.php`.
Each rule has the following keys:
* **body**: An array of xpath expressions which will be extracted from the page
* **strip**: An array of xpath expressions which will be removed from the matched content
* **test_url**: A test url to a matching page to test the grabber
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Example for the BBC website, `www.bbc.co.uk.php`:
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```php
<?php
return array(
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'grabber' => array(
'%.*%' => array(
'test_url' => 'http://www.bbc.co.uk/news/world-middle-east-23911833',
'body' => array(
'//div[@class="story-body"]',
),
'strip' => array(
'//script',
'//form',
'//style',
'//*[@class="story-date"]',
'//*[@class="story-header"]',
'//*[@class="story-related"]',
'//*[contains(@class, "byline")]',
'//*[contains(@class, "story-feature")]',
'//*[@id="video-carousel-container"]',
'//*[@id="also-related-links"]',
'//*[contains(@class, "share") or contains(@class, "hidden") or contains(@class, "hyper")]',
)
)
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)
);
```
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Each rule file can contain rules for different subdivisions of a website. Those subdivisions are distinguished by their URL. The first level array key of a rule file will be matched against the full path of the URL using **preg_match**, e.g. for **http://www.bbc.co.uk/news/world-middle-east-23911833?test=1** the URL that would be matched is **/news/world-middle-east-23911833?test=1**
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Let's say you want to extract a div with the id **video** if the article points to an URL like **http://comix.com/videos/423**, **audio** if the article points to an URL like **http://comix.com/podcasts/5** and all other links to the page should instead take the div with the id **content**. The following rulefile ```comix.com.php``` would fit that requirement:
```php
return array(
'grabber' => array(
'%^/videos.*%' => array(
'test_url' => 'http://comix.com/videos/423',
'body' => array(
'//div[@id="video"]',
),
'strip' => array()
),
'%^/podcasts.*%' => array(
'test_url' => 'http://comix.com/podcasts/5',
'body' => array(
'//div[@id="audio"]',
),
'strip' => array()
),
'%.*%' => array(
'test_url' => 'http://comix.com/blog/1',
'body' => array(
'//div[@id="content"]',
),
'strip' => array()
)
)
);
```
Sharing your custom rules with the community
--------------------------------------------
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If you would like to share your custom rules with everybody, send a pull-request to the project [PicoFeed](https://github.com/miniflux/picofeed).
That will be merged in the Miniflux code base.
List of content grabber rules
-----------------------------
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[List of rules included by default](https://github.com/miniflux/miniflux-legacy/tree/master/vendor/miniflux/picofeed/lib/PicoFeed/Rules).