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<?php
/**
* @file
* @author Niklas Laxström
* @license GPL-2.0+
*/
/**
* This class uses GitHub api to obtain a list of files present in a directory
* to avoid fetching files that don't exist.
*
* @todo Could use file hashes to 1) avoid fetching files with same hash as
* the source. 2) avoid fetching files which haven't changed since last check
* if we store them.
*/
class LU_GitHubFetcher extends LU_HttpFetcher {
public function fetchDirectory( $pattern ) {
$p = '~^https://raw.github\.com/(?P<org>[^/]+)/(?P<repo>[^/]+)/(?P<branch>[^/]+)/(?P<path>.+)/.+$~';
preg_match( $p, $pattern, $m );
$json = Http::get( "https://api.github.com/repos/{$m['org']}/{$m['repo']}/contents/{$m['path']}" );
if ( !$json ) {
throw new Exception( "Unable to get directory listing for {$m['org']}/{$m['repo']}" );
}
$files = array();
$json = FormatJson::decode( $json, true );
foreach ( $json as $fileinfo ) {
$fileurl = dirname( $pattern ) . '/' . $fileinfo['name'];
$file = $this->fetchFile( $fileurl );
if ( $file ) {
$files[$fileurl] = $file;
}
}
return $files;
}
}
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