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