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<?php /** * Classes, which help reading streams of data from files. * Based on the classes from Danilo Segan <danilo@kvota.net> * * @version $Id: streams.php 1157 2015-11-20 04:30:11Z dd32 $ * @package pomo * @subpackage streams */ if ( ! class_exists( 'POMO_Reader', false ) ) : class POMO_Reader { var $endian = 'little'; var $_post = ''; /** * PHP5 constructor. */ function __construct() { $this->is_overloaded = ( ( ini_get( 'mbstring.func_overload' ) & 2 ) != 0 ) && function_exists( 'mb_substr' ); $this->_pos = 0; } /** * PHP4 constructor. * * @deprecated 5.4.0 Use __construct() instead. * * @see POMO_Reader::__construct() */ public function POMO_Reader() { _deprecated_constructor( self::class, '5.4.0', static::class ); self::__construct(); } /** * Sets the endianness of the file. * * @param string $endian Set the endianness of the file. Accepts 'big', or 'little'. */ function setEndian( $endian ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid $this->endian = $endian; } /** * Reads a 32bit Integer from the Stream * * @return mixed The integer, corresponding to the next 32 bits from * the stream of false if there are not enough bytes or on error */ function readint32() { $bytes = $this->read( 4 ); if ( 4 != $this->strlen( $bytes ) ) { return false; } $endian_letter = ( 'big' == $this->endian ) ? 'N' : 'V'; $int = unpack( $endian_letter, $bytes ); return reset( $int ); } /** * Reads an array of 32-bit Integers from the Stream * * @param integer $count How many elements should be read * @return mixed Array of integers or false if there isn't * enough data or on error */ function readint32array( $count ) { $bytes = $this->read( 4 * $count ); if ( 4 * $count != $this->strlen( $bytes ) ) { return false; } $endian_letter = ( 'big' == $this->endian ) ? 'N' : 'V'; return unpack( $endian_letter . $count, $bytes ); } /** * @param string $string * @param int $start * @param int $length * @return string */ function substr( $string, $start, $length ) { if ( $this->is_overloaded ) { return mb_substr( $string, $start, $length, 'ascii' ); } else { return substr( $string, $start, $length ); } } /** * @param string $string * @return int */ function strlen( $string ) { if ( $this->is_overloaded ) { return mb_strlen( $string, 'ascii' ); } else { return strlen( $string ); } } /** * @param string $string * @param int $chunk_size * @return array */ function str_split( $string, $chunk_size ) { if ( ! function_exists( 'str_split' ) ) { $length = $this->strlen( $string ); $out = array(); for ( $i = 0; $i < $length; $i += $chunk_size ) { $out[] = $this->substr( $string, $i, $chunk_size ); } return $out; } else { return str_split( $string, $chunk_size ); } } /** * @return int */ function pos() { return $this->_pos; } /** * @return true */ function is_resource() { return true; } /** * @return true */ function close() { return true; } } endif; if ( ! class_exists( 'POMO_FileReader', false ) ) : class POMO_FileReader extends POMO_Reader { /** * @param string $filename */ function __construct( $filename ) { parent::__construct(); $this->_f = fopen( $filename, 'rb' ); } /** * PHP4 constructor. * * @deprecated 5.4.0 Use __construct() instead. * * @see POMO_FileReader::__construct() */ public function POMO_FileReader( $filename ) { _deprecated_constructor( self::class, '5.4.0', static::class ); self::__construct( $filename ); } /** * @param int $bytes * @return string|false Returns read string, otherwise false. */ function read( $bytes ) { return fread( $this->_f, $bytes ); } /** * @param int $pos * @return boolean */ function seekto( $pos ) { if ( -1 == fseek( $this->_f, $pos, SEEK_SET ) ) { return false; } $this->_pos = $pos; return true; } /** * @return bool */ function is_resource() { return is_resource( $this->_f ); } /** * @return bool */ function feof() { return feof( $this->_f ); } /** * @return bool */ function close() { return fclose( $this->_f ); } /** * @return string */ function read_all() { $all = ''; while ( ! $this->feof() ) { $all .= $this->read( 4096 ); } return $all; } } endif; if ( ! class_exists( 'POMO_StringReader', false ) ) : /** * Provides file-like methods for manipulating a string instead * of a physical file. */ class POMO_StringReader extends POMO_Reader { var $_str = ''; /** * PHP5 constructor. */ 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 */ 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 */ function seekto( $pos ) { $this->_pos = $pos; if ( $this->strlen( $this->_str ) < $this->_pos ) { $this->_pos = $this->strlen( $this->_str ); } return $this->_pos; } /** * @return int */ function length() { return $this->strlen( $this->_str ); } /** * @return string */ function read_all() { return $this->substr( $this->_str, $this->_pos, $this->strlen( $this->_str ) ); } } endif; if ( ! class_exists( 'POMO_CachedFileReader', false ) ) : /** * Reads the contents of the file in the beginning. */ class POMO_CachedFileReader extends POMO_StringReader { /** * PHP5 constructor. */ function __construct( $filename ) { parent::__construct(); $this->_str = file_get_contents( $filename ); if ( false === $this->_str ) { return false; } $this->_pos = 0; } /** * PHP4 constructor. * * @deprecated 5.4.0 Use __construct() instead. * * @see POMO_CachedFileReader::__construct() */ public function POMO_CachedFileReader( $filename ) { _deprecated_constructor( self::class, '5.4.0', static::class ); self::__construct( $filename ); } } endif; if ( ! class_exists( 'POMO_CachedIntFileReader', false ) ) : /** * Reads the contents of the file in the beginning. */ class POMO_CachedIntFileReader extends POMO_CachedFileReader { /** * PHP5 constructor. */ public function __construct( $filename ) { parent::__construct( $filename ); } /** * PHP4 constructor. * * @deprecated 5.4.0 Use __construct() instead. * * @see POMO_CachedIntFileReader::__construct() */ function POMO_CachedIntFileReader( $filename ) { _deprecated_constructor( self::class, '5.4.0', static::class ); self::__construct( $filename ); } } endif;
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