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<?php
namespace Favicon;
/**
* DataAccess is a wrapper used to read/write data locally or remotly
* Aside from SOLID principles, this wrapper is also useful to mock remote resources in unit tests
* Note: remote access warning are silenced because we don't care if a website is unreachable
**/
class DataAccess {
public function retrieveUrl($url) {
$this->set_context();
return @file_get_contents($url);
}
public function retrieveHeader($url) {
$this->set_context();
$headers = @get_headers($url, 1);
return is_array($headers) ? array_change_key_case($headers) : array();
}
public function saveCache($file, $data) {
file_put_contents($file, $data);
}
public function readCache($file) {
return file_get_contents($file);
}
private function set_context() {
stream_context_set_default(
array(
'http' => array(
'method' => 'GET',
'timeout' => 10,
'header' => "User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:20.0; Favicon; +https://github.com/ArthurHoaro/favicon) Gecko/20100101 Firefox/32.0\r\n",
)
)
);
}
}
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