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<?php
class OpmlManager
{
public static function load(string $file) : Opml
{
if (!file_exists($file)) {
throw new Exception('OPML file not found!');
}
$opml = new Opml();
//Remove BOM if needed
$BOM = '/^/';
$fileContent = file_get_contents($file);
$fileContent = preg_replace($BOM, '', $fileContent, 1);
//Parse
$opml->parse($fileContent);
return $opml;
}
public static function format(Opml $opml, $freezeDateModified = false) : string
{
$owner = '';
if ($opml->ownerName != '') {
$owner .= '<ownerName>'.htmlspecialchars($opml->ownerName).'</ownerName>'."\n";
}
if ($opml->ownerEmail != '') {
$owner .= '<ownerEmail>'.htmlspecialchars($opml->ownerEmail).'</ownerEmail>'."\n";
}
if ($opml->ownerId != '') {
$owner .= '<ownerId>'.htmlspecialchars($opml->ownerId).'</ownerId>'."\n";
}
$entries = '';
foreach ($opml->entries as $person) {
$entries .= sprintf(
"\t" . '<outline text="%s" htmlUrl="%s" xmlUrl="%s" isDown="%s" />',
htmlspecialchars($person['name'], ENT_QUOTES),
htmlspecialchars($person['website'], ENT_QUOTES),
htmlspecialchars($person['feed'], ENT_QUOTES),
htmlspecialchars($person['isDown'] ?? '', ENT_QUOTES)
) . "\n";
}
$template = <<<XML
<?xml version="1.0"?>
<opml version="2.0">
<head>
<title>%s</title>
<dateCreated>%s</dateCreated>
<dateModified>%s</dateModified>
%s
<docs>http://opml.org/spec2.opml</docs>
</head>
<body>
%s
</body>
</opml>
XML;
return sprintf(
$template,
htmlspecialchars($opml->getTitle()),
$opml->dateCreated,
$freezeDateModified ? $opml->dateModified : date_format(date_create('now', new DateTimeZone('UTC')), DateTimeInterface::ATOM),
$owner,
$entries
);
}
/**
* @param Opml $opml
* @param string $file
*/
public static function save(Opml $opml, string $file) : int|bool
{
return file_put_contents($file, self::format($opml));
}
public static function backup($file)
{
copy($file, $file.'.bak');
}
}
|
