forked from GNUsocial/gnu-social
575 lines
20 KiB
PHP
575 lines
20 KiB
PHP
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<?php
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/**
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* Pure-PHP ANSI Decoder
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*
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* PHP version 5
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*
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* If you call read() in \phpseclib\Net\SSH2 you may get {@link http://en.wikipedia.org/wiki/ANSI_escape_code ANSI escape codes} back.
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* They'd look like chr(0x1B) . '[00m' or whatever (0x1B = ESC). They tell a
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* {@link http://en.wikipedia.org/wiki/Terminal_emulator terminal emulator} how to format the characters, what
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* color to display them in, etc. \phpseclib\File\ANSI is a {@link http://en.wikipedia.org/wiki/VT100 VT100} terminal emulator.
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*
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* @category File
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* @package ANSI
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2012 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://phpseclib.sourceforge.net
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*/
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namespace phpseclib\File;
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/**
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* Pure-PHP ANSI Decoder
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*
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* @package ANSI
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* @author Jim Wigginton <terrafrost@php.net>
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* @access public
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*/
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class ANSI
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{
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/**
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* Max Width
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*
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* @var int
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* @access private
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*/
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var $max_x;
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/**
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* Max Height
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*
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* @var int
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* @access private
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*/
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var $max_y;
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/**
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* Max History
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*
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* @var int
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* @access private
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*/
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var $max_history;
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/**
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* History
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*
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* @var array
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* @access private
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*/
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var $history;
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/**
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* History Attributes
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*
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* @var array
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* @access private
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*/
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var $history_attrs;
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/**
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* Current Column
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*
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* @var int
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* @access private
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*/
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var $x;
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/**
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* Current Row
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*
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* @var int
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* @access private
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*/
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var $y;
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/**
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* Old Column
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*
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* @var int
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* @access private
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*/
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var $old_x;
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/**
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* Old Row
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*
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* @var int
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* @access private
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*/
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var $old_y;
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/**
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* An empty attribute cell
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*
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* @var object
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* @access private
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*/
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var $base_attr_cell;
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/**
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* The current attribute cell
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*
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* @var object
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* @access private
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*/
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var $attr_cell;
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/**
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* An empty attribute row
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*
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* @var array
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* @access private
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*/
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var $attr_row;
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/**
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* The current screen text
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*
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* @var array
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* @access private
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*/
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var $screen;
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/**
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* The current screen attributes
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*
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* @var array
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* @access private
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*/
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var $attrs;
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/**
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* Current ANSI code
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*
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* @var string
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* @access private
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*/
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var $ansi;
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/**
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* Tokenization
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*
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* @var array
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* @access private
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*/
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var $tokenization;
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/**
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* Default Constructor.
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*
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* @return \phpseclib\File\ANSI
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* @access public
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*/
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function __construct()
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{
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$attr_cell = new \stdClass();
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$attr_cell->bold = false;
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$attr_cell->underline = false;
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$attr_cell->blink = false;
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$attr_cell->background = 'black';
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$attr_cell->foreground = 'white';
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$attr_cell->reverse = false;
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$this->base_attr_cell = clone $attr_cell;
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$this->attr_cell = clone $attr_cell;
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$this->setHistory(200);
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$this->setDimensions(80, 24);
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}
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/**
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* Set terminal width and height
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*
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* Resets the screen as well
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*
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* @param int $x
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* @param int $y
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* @access public
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*/
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function setDimensions($x, $y)
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{
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$this->max_x = $x - 1;
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$this->max_y = $y - 1;
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$this->x = $this->y = 0;
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$this->history = $this->history_attrs = array();
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$this->attr_row = array_fill(0, $this->max_x + 2, $this->base_attr_cell);
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$this->screen = array_fill(0, $this->max_y + 1, '');
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$this->attrs = array_fill(0, $this->max_y + 1, $this->attr_row);
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$this->ansi = '';
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}
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/**
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* Set the number of lines that should be logged past the terminal height
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*
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* @param int $x
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* @param int $y
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* @access public
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*/
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function setHistory($history)
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{
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$this->max_history = $history;
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}
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/**
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* Load a string
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*
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* @param string $source
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* @access public
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*/
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function loadString($source)
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{
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$this->setDimensions($this->max_x + 1, $this->max_y + 1);
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$this->appendString($source);
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}
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/**
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* Appdend a string
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*
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* @param string $source
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* @access public
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*/
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function appendString($source)
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{
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$this->tokenization = array('');
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for ($i = 0; $i < strlen($source); $i++) {
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if (strlen($this->ansi)) {
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$this->ansi.= $source[$i];
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$chr = ord($source[$i]);
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// http://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements
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// single character CSI's not currently supported
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switch (true) {
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case $this->ansi == "\x1B=":
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$this->ansi = '';
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continue 2;
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case strlen($this->ansi) == 2 && $chr >= 64 && $chr <= 95 && $chr != ord('['):
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case strlen($this->ansi) > 2 && $chr >= 64 && $chr <= 126:
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break;
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default:
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continue 2;
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}
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$this->tokenization[] = $this->ansi;
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$this->tokenization[] = '';
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// http://ascii-table.com/ansi-escape-sequences-vt-100.php
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switch ($this->ansi) {
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case "\x1B[H": // Move cursor to upper left corner
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$this->old_x = $this->x;
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$this->old_y = $this->y;
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$this->x = $this->y = 0;
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break;
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case "\x1B[J": // Clear screen from cursor down
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$this->history = array_merge($this->history, array_slice(array_splice($this->screen, $this->y + 1), 0, $this->old_y));
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$this->screen = array_merge($this->screen, array_fill($this->y, $this->max_y, ''));
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$this->history_attrs = array_merge($this->history_attrs, array_slice(array_splice($this->attrs, $this->y + 1), 0, $this->old_y));
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$this->attrs = array_merge($this->attrs, array_fill($this->y, $this->max_y, $this->attr_row));
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if (count($this->history) == $this->max_history) {
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array_shift($this->history);
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array_shift($this->history_attrs);
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}
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case "\x1B[K": // Clear screen from cursor right
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$this->screen[$this->y] = substr($this->screen[$this->y], 0, $this->x);
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array_splice($this->attrs[$this->y], $this->x + 1, $this->max_x - $this->x, array_fill($this->x, $this->max_x - $this->x - 1, $this->base_attr_cell));
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break;
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case "\x1B[2K": // Clear entire line
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$this->screen[$this->y] = str_repeat(' ', $this->x);
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$this->attrs[$this->y] = $this->attr_row;
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break;
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case "\x1B[?1h": // set cursor key to application
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case "\x1B[?25h": // show the cursor
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case "\x1B(B": // set united states g0 character set
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break;
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case "\x1BE": // Move to next line
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$this->_newLine();
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$this->x = 0;
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break;
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default:
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switch (true) {
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case preg_match('#\x1B\[(\d+)B#', $this->ansi, $match): // Move cursor down n lines
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$this->old_y = $this->y;
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$this->y+= $match[1];
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break;
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case preg_match('#\x1B\[(\d+);(\d+)H#', $this->ansi, $match): // Move cursor to screen location v,h
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$this->old_x = $this->x;
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$this->old_y = $this->y;
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$this->x = $match[2] - 1;
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$this->y = $match[1] - 1;
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break;
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case preg_match('#\x1B\[(\d+)C#', $this->ansi, $match): // Move cursor right n lines
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$this->old_x = $this->x;
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$this->x+= $match[1];
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break;
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case preg_match('#\x1B\[(\d+)D#', $this->ansi, $match): // Move cursor left n lines
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$this->old_x = $this->x;
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$this->x-= $match[1];
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break;
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case preg_match('#\x1B\[(\d+);(\d+)r#', $this->ansi, $match): // Set top and bottom lines of a window
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break;
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case preg_match('#\x1B\[(\d*(?:;\d*)*)m#', $this->ansi, $match): // character attributes
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$attr_cell = &$this->attr_cell;
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$mods = explode(';', $match[1]);
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foreach ($mods as $mod) {
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switch ($mod) {
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case 0: // Turn off character attributes
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$attr_cell = clone $this->base_attr_cell;
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break;
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case 1: // Turn bold mode on
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$attr_cell->bold = true;
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break;
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case 4: // Turn underline mode on
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$attr_cell->underline = true;
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break;
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case 5: // Turn blinking mode on
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$attr_cell->blink = true;
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break;
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case 7: // Turn reverse video on
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$attr_cell->reverse = !$attr_cell->reverse;
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$temp = $attr_cell->background;
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$attr_cell->background = $attr_cell->foreground;
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$attr_cell->foreground = $temp;
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break;
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default: // set colors
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//$front = $attr_cell->reverse ? &$attr_cell->background : &$attr_cell->foreground;
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$front = &$attr_cell->{ $attr_cell->reverse ? 'background' : 'foreground' };
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//$back = $attr_cell->reverse ? &$attr_cell->foreground : &$attr_cell->background;
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$back = &$attr_cell->{ $attr_cell->reverse ? 'foreground' : 'background' };
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switch ($mod) {
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// @codingStandardsIgnoreStart
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case 30: $front = 'black'; break;
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case 31: $front = 'red'; break;
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case 32: $front = 'green'; break;
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case 33: $front = 'yellow'; break;
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case 34: $front = 'blue'; break;
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case 35: $front = 'magenta'; break;
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case 36: $front = 'cyan'; break;
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case 37: $front = 'white'; break;
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case 40: $back = 'black'; break;
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case 41: $back = 'red'; break;
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case 42: $back = 'green'; break;
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case 43: $back = 'yellow'; break;
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case 44: $back = 'blue'; break;
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case 45: $back = 'magenta'; break;
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case 46: $back = 'cyan'; break;
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case 47: $back = 'white'; break;
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// @codingStandardsIgnoreEnd
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default:
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//user_error('Unsupported attribute: ' . $mod);
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$this->ansi = '';
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break 2;
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}
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}
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}
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break;
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default:
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//user_error("{$this->ansi} is unsupported\r\n");
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}
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}
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$this->ansi = '';
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continue;
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}
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$this->tokenization[count($this->tokenization) - 1].= $source[$i];
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switch ($source[$i]) {
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case "\r":
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$this->x = 0;
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break;
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case "\n":
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$this->_newLine();
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break;
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case "\x08": // backspace
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if ($this->x) {
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$this->x--;
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$this->attrs[$this->y][$this->x] = clone $this->base_attr_cell;
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$this->screen[$this->y] = substr_replace(
|
||
|
|
$this->screen[$this->y],
|
||
|
|
$source[$i],
|
||
|
|
$this->x,
|
||
|
|
1
|
||
|
|
);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case "\x0F": // shift
|
||
|
|
break;
|
||
|
|
case "\x1B": // start ANSI escape code
|
||
|
|
$this->tokenization[count($this->tokenization) - 1] = substr($this->tokenization[count($this->tokenization) - 1], 0, -1);
|
||
|
|
//if (!strlen($this->tokenization[count($this->tokenization) - 1])) {
|
||
|
|
// array_pop($this->tokenization);
|
||
|
|
//}
|
||
|
|
$this->ansi.= "\x1B";
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$this->attrs[$this->y][$this->x] = clone $this->attr_cell;
|
||
|
|
if ($this->x > strlen($this->screen[$this->y])) {
|
||
|
|
$this->screen[$this->y] = str_repeat(' ', $this->x);
|
||
|
|
}
|
||
|
|
$this->screen[$this->y] = substr_replace(
|
||
|
|
$this->screen[$this->y],
|
||
|
|
$source[$i],
|
||
|
|
$this->x,
|
||
|
|
1
|
||
|
|
);
|
||
|
|
|
||
|
|
if ($this->x > $this->max_x) {
|
||
|
|
$this->x = 0;
|
||
|
|
$this->y++;
|
||
|
|
} else {
|
||
|
|
$this->x++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Add a new line
|
||
|
|
*
|
||
|
|
* Also update the $this->screen and $this->history buffers
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _newLine()
|
||
|
|
{
|
||
|
|
//if ($this->y < $this->max_y) {
|
||
|
|
// $this->y++;
|
||
|
|
//}
|
||
|
|
|
||
|
|
while ($this->y >= $this->max_y) {
|
||
|
|
$this->history = array_merge($this->history, array(array_shift($this->screen)));
|
||
|
|
$this->screen[] = '';
|
||
|
|
|
||
|
|
$this->history_attrs = array_merge($this->history_attrs, array(array_shift($this->attrs)));
|
||
|
|
$this->attrs[] = $this->attr_row;
|
||
|
|
|
||
|
|
if (count($this->history) >= $this->max_history) {
|
||
|
|
array_shift($this->history);
|
||
|
|
array_shift($this->history_attrs);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->y--;
|
||
|
|
}
|
||
|
|
$this->y++;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current coordinate without preformating
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
function _processCoordinate($last_attr, $cur_attr, $char)
|
||
|
|
{
|
||
|
|
$output = '';
|
||
|
|
|
||
|
|
if ($last_attr != $cur_attr) {
|
||
|
|
$close = $open = '';
|
||
|
|
if ($last_attr->foreground != $cur_attr->foreground) {
|
||
|
|
if ($cur_attr->foreground != 'white') {
|
||
|
|
$open.= '<span style="color: ' . $cur_attr->foreground . '">';
|
||
|
|
}
|
||
|
|
if ($last_attr->foreground != 'white') {
|
||
|
|
$close = '</span>' . $close;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($last_attr->background != $cur_attr->background) {
|
||
|
|
if ($cur_attr->background != 'black') {
|
||
|
|
$open.= '<span style="background: ' . $cur_attr->background . '">';
|
||
|
|
}
|
||
|
|
if ($last_attr->background != 'black') {
|
||
|
|
$close = '</span>' . $close;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($last_attr->bold != $cur_attr->bold) {
|
||
|
|
if ($cur_attr->bold) {
|
||
|
|
$open.= '<b>';
|
||
|
|
} else {
|
||
|
|
$close = '</b>' . $close;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($last_attr->underline != $cur_attr->underline) {
|
||
|
|
if ($cur_attr->underline) {
|
||
|
|
$open.= '<u>';
|
||
|
|
} else {
|
||
|
|
$close = '</u>' . $close;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($last_attr->blink != $cur_attr->blink) {
|
||
|
|
if ($cur_attr->blink) {
|
||
|
|
$open.= '<blink>';
|
||
|
|
} else {
|
||
|
|
$close = '</blink>' . $close;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$output.= $close . $open;
|
||
|
|
}
|
||
|
|
|
||
|
|
$output.= htmlspecialchars($char);
|
||
|
|
|
||
|
|
return $output;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current screen without preformating
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
function _getScreen()
|
||
|
|
{
|
||
|
|
$output = '';
|
||
|
|
$last_attr = $this->base_attr_cell;
|
||
|
|
for ($i = 0; $i <= $this->max_y; $i++) {
|
||
|
|
for ($j = 0; $j <= $this->max_x; $j++) {
|
||
|
|
$cur_attr = $this->attrs[$i][$j];
|
||
|
|
$output.= $this->_processCoordinate($last_attr, $cur_attr, isset($this->screen[$i][$j]) ? $this->screen[$i][$j] : '');
|
||
|
|
$last_attr = $this->attrs[$i][$j];
|
||
|
|
}
|
||
|
|
$output.= "\r\n";
|
||
|
|
}
|
||
|
|
$output = substr($output, 0, -2);
|
||
|
|
// close any remaining open tags
|
||
|
|
$output.= $this->_processCoordinate($last_attr, $this->base_attr_cell, '');
|
||
|
|
return rtrim($output);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current screen
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
function getScreen()
|
||
|
|
{
|
||
|
|
return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $this->_getScreen() . '</pre>';
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current screen and the x previous lines
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
function getHistory()
|
||
|
|
{
|
||
|
|
$scrollback = '';
|
||
|
|
$last_attr = $this->base_attr_cell;
|
||
|
|
for ($i = 0; $i < count($this->history); $i++) {
|
||
|
|
for ($j = 0; $j <= $this->max_x + 1; $j++) {
|
||
|
|
$cur_attr = $this->history_attrs[$i][$j];
|
||
|
|
$scrollback.= $this->_processCoordinate($last_attr, $cur_attr, isset($this->history[$i][$j]) ? $this->history[$i][$j] : '');
|
||
|
|
$last_attr = $this->history_attrs[$i][$j];
|
||
|
|
}
|
||
|
|
$scrollback.= "\r\n";
|
||
|
|
}
|
||
|
|
$base_attr_cell = $this->base_attr_cell;
|
||
|
|
$this->base_attr_cell = $last_attr;
|
||
|
|
$scrollback.= $this->_getScreen();
|
||
|
|
$this->base_attr_cell = $base_attr_cell;
|
||
|
|
|
||
|
|
return '<pre width="' . ($this->max_x + 1) . '" style="color: white; background: black">' . $scrollback . '</span></pre>';
|
||
|
|
}
|
||
|
|
}
|