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core: Automatically select a bridge based on a URL (#928)

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* core: Add bridge parameter auto detection

This adds a new 'detect' action which accepts a URL from which an
appropriate bridge is selected and relevant parameters are extracted.
The user is then automatically redirected to the selected bridge.

For example to get a feed from: https://twitter.com/search?q=%23rss-bridge
we could send a request to:
'/?action=detect&format=Atom&url=twitter.com/search%3Fq%3D%2523rss-bridge'
which would redirect to:
'/?action=display&q=%23rss-bridge&bridge=Twitter&format=Atom'.

This auto detection happens on a per-bridge basis, so a new function
'detectParameters' is added to BridgeInterface which bridges may implement.
It takes a URL for an argument and returns a list of parameters that were
extracted, or null if the URL isn't relevant for the bridge.

* [TwitterBridge] Add parameter auto detection

* [BridgeAbstract] Add generic parameter detection

This adds generic "paramater detection" for bridges that don't have any
parameters defined. If the queried URL matches the URI defined in the
bridge (ignoring https://, www. and trailing /) an emtpy list of parameters is
returned.
This commit is contained in:
Roliga 2018-11-26 18:05:41 +01:00 • committed by LogMANOriginal
parent b4dbd191d0
commit 49da67cb33
4 changed files with 92 additions and 0 deletions
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13
lib/BridgeAbstract.php
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@ -278,4 +278,17 @@ abstract class BridgeAbstract implements BridgeInterface {
return static::CACHE_TIMEOUT;
}
/** {@inheritdoc} */
public function detectParameters($url){
$regex = '/^(https?:\/\/)?(www\.)?(.+?)(\/)?$/';
if(empty(static::PARAMETERS)
&& preg_match($regex, $url, $urlMatches) > 0
&& preg_match($regex, static::URI, $bridgeUriMatches) > 0
&& $urlMatches[3] === $bridgeUriMatches[3]) {
return array();
} else {
return null;
}
}
}