wp-includes/pomo/streams.php:239Provides file-like methods for manipulating a string instead of a physical file.
$_strpublic class POMO_StringReader extends POMO_Reader { public $_str = ''; /** * PHP5 constructor. */ public function __construct( $str = '' ) { parent::__construct(); $this->_str = $str; $this->_pos = 0; } /** * PHP4 constructor. * * @deprecated 5.4.0 Use __construct() instead. * * @see POMO_StringReader::__construct() */ public function POMO_StringReader( $str = '' ) { _deprecated_constructor( self::class, '5.4.0', static::class ); self::__construct( $str ); } /** * @param string $bytes * @return string */ public function read( $bytes ) { $data = $this->substr( $this->_str, $this->_pos, $bytes ); $this->_pos += $bytes; if ( $this->strlen( $this->_str ) < $this->_pos ) { $this->_pos = $this->strlen( $this->_str ); } return $data; } /** * @param int $pos * @return int */ public function seekto( $pos ) { $this->_pos = $pos; if ( $this->strlen( $this->_str ) < $this->_pos ) { $this->_pos = $this->strlen( $this->_str ); } return $this->_pos; } /** * @return int */ public function length() { return $this->strlen( $this->_str ); } /** * @return string */ public function read_all() { return $this->substr( $this->_str, $this->_pos, $this->strlen( $this->_str ) ); } }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/pomo/streams.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.