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Move RFC5987 encoding function to UA class

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This commit is contained in:
Kijin Sung 2016-06-25 21:22:32 +09:00
parent 8fe8c9203e
commit c3fe8d265b
2 changed files with 63 additions and 19 deletions
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61
common/framework/ua.php
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@ -270,4 +270,65 @@ class UA
return $result;
}
/**
* This method encodes a UTF-8 filename for downloading in the current visitor's browser.
*
* @param string $filename
* @param string $ua (optional)
* @return string
*/
public static function encodeFilenameForDownload($filename, $ua = null)
{
// Get the User-Agent header if the caller did not specify $ua.
$ua = $ua ?: (isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : null);
// Get the browser name and version.
$browser = self::getBrowserInfo($ua);
// Find the best format that this browser supports.
if ($browser->browser === 'Chrome' && $browser->version >= 11)
{
$output_format = 'rfc5987';
}
elseif ($browser->browser === 'Firefox' && $browser->version >= 6)
{
$output_format = 'rfc5987';
}
elseif ($browser->browser === 'Safari' && $browser->version >= 6)
{
$output_format = 'rfc5987';
}
elseif ($browser->browser === 'IE' && $browser->version >= 10)
{
$output_format = 'rfc5987';
}
elseif ($browser->browser === 'IE')
{
$output_format = 'old_ie';
}
else
{
$output_format = 'raw';
}
// Clean the filename.
$filename = Filters\FilenameFilter::clean($filename);
// Apply the format and return.
switch ($output_format)
{
case 'raw':
return 'filename="' . $filename . '"';
case 'rfc5987':
$filename = rawurlencode($filename);
return "filename*=UTF-8''" . $filename . '; filename="' . $filename . '"';
case 'old_ie':
default:
$filename = rawurlencode($filename);
return 'filename="' . preg_replace('/\./', '%2e', $filename, substr_count($filename, '.') - 1) . '"';
}
}
}