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<?php namespace Gettext\Utils; class StringReader { public $pos; public $str; public $strlen; /** * Constructor. * * @param string $str The string to read */ public function __construct($str) { $this->str = $str; $this->strlen = strlen($this->str); } /** * Read and returns a part of the string. * * @param int $bytes The number of bytes to read * * @return string */ public function read($bytes) { $data = substr($this->str, $this->pos, $bytes); $this->seekto($this->pos + $bytes); return $data; } /** * Move the cursor to a specific position. * * @param int $pos The amount of bytes to move * * @return int The new position */ public function seekto($pos) { $this->pos = ($this->strlen < $pos) ? $this->strlen : $pos; return $this->pos; } }