100 lines
4.1 KiB
Markdown
100 lines
4.1 KiB
Markdown
Full article download
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=====================
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For feeds that accept only a summary, it's possible to download the full content directly from the original website.
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How the content grabber works?
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------------------------------
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1. Try with rules first (Xpath patterns) for the domain name
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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
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However the content grabber doesn't work very well with all websites.
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Especially websites that use a lot of Javascript to generate the content.
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**The best results are obtained with Xpath rules file.**
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How to write a grabber rules file?
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----------------------------------
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Miniflux will try first to find the file in the [default bundled rules directory](https://github.com/miniflux/miniflux/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`.
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Each rule has the following keys:
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* **body**: An array of xpath expressions which will be extracted from the page
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* **strip**: An array of xpath expressions which will be removed from the matched content
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* **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
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<?php
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return array(
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'grabber' => array(
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'%.*%' => array(
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'test_url' => 'http://www.bbc.co.uk/news/world-middle-east-23911833',
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'body' => array(
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'//div[@class="story-body"]',
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),
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'strip' => array(
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'//script',
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'//form',
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'//style',
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'//*[@class="story-date"]',
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'//*[@class="story-header"]',
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'//*[@class="story-related"]',
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'//*[contains(@class, "byline")]',
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'//*[contains(@class, "story-feature")]',
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'//*[@id="video-carousel-container"]',
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'//*[@id="also-related-links"]',
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'//*[contains(@class, "share") or contains(@class, "hidden") or contains(@class, "hyper")]',
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)
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)
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)
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);
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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:
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```php
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return array(
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'grabber' => array(
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'%^/videos.*%' => array(
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'test_url' => 'http://comix.com/videos/423',
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'body' => array(
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'//div[@id="video"]',
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),
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'strip' => array()
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),
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'%^/podcasts.*%' => array(
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'test_url' => 'http://comix.com/podcasts/5',
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'body' => array(
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'//div[@id="audio"]',
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),
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'strip' => array()
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),
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'%.*%' => array(
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'test_url' => 'http://comix.com/blog/1',
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'body' => array(
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'//div[@id="content"]',
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),
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'strip' => array()
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)
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)
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);
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```
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Sharing your custom rules with the community
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--------------------------------------------
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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/fguillot/picofeed).
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That will be merged in the Miniflux code base.
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List of content grabber rules
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-----------------------------
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[List of rules included by default](https://github.com/miniflux/miniflux/tree/master/vendor/fguillot/picofeed/lib/PicoFeed/Rules). |