560 lines
20 KiB
PHP
560 lines
20 KiB
PHP
<?php
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/**
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* Pure-PHP ANSI Decoder
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*
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* PHP versions 4 and 5
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*
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* If you call read() in 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. File_ANSI is a {@link http://en.wikipedia.org/wiki/VT100 VT100} terminal emulator.
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*
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* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @category File
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* @package File_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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/**
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* Pure-PHP ANSI Decoder
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*
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* @package File_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 File_ANSI
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{
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/**
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* Max Width
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*
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* @var Integer
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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 Integer
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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 Integer
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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 Integer
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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 Integer
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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 Integer
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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 Integer
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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 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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* The current foreground color
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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 $foreground;
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/**
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* The current background color
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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 $background;
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/**
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* Bold flag
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*
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* @var Boolean
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* @access private
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*/
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var $bold;
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/**
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* Underline flag
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*
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* @var Boolean
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* @access private
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*/
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var $underline;
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/**
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* Blink flag
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*
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* @var Boolean
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* @access private
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*/
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var $blink;
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/**
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* Reverse flag
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*
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* @var Boolean
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* @access private
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*/
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var $reverse;
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/**
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* Color flag
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*
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* @var Boolean
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* @access private
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*/
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var $color;
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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 $ansi;
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/**
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* Default Constructor.
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*
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* @return File_ANSI
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* @access public
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*/
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function File_ANSI()
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{
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$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 Integer $x
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* @param Integer $y
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* @access public
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*/
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function setDimensions($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, $this->max_x + 1, '');
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$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->foreground = 'white';
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$this->background = 'black';
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$this->bold = false;
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$this->underline = false;
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$this->blink = false;
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$this->reverse = false;
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$this->color = false;
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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 Integer $x
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* @param Integer $y
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* @access public
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*/
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function setHistory($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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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 && $chr <= 126:
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break;
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default:
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continue 2;
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}
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// http://ascii-table.com/ansi-escape-sequences-vt-100.php
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switch ($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], $this->x + 1);
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break;
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case "\x1B[2K": // Clear entire line
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$this->screen[$this->y] = str_repeat(' ', $this->x);
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$this->attrs[$this->y] = $this->attr_row;
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break;
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case "\x1B[?1h": // set cursor key to application
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case "\x1B[?25h": // show the cursor
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break;
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case "\x1BE": // Move to next line
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$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+);(\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 = $this->x;
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$x = $match[1] - 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, $match): // character attributes
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$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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$this->attrs[$this->y][$this->x] = '';
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if ($this->bold) $this->attrs[$this->y][$this->x].= '</b>';
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if ($this->underline) $this->attrs[$this->y][$this->x].= '</u>';
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if ($this->blink) $this->attrs[$this->y][$this->x].= '</blink>';
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if ($this->color) $this->attrs[$this->y][$this->x].= '</span>';
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if ($this->reverse) {
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$temp = $this->background;
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$this->background = $this->foreground;
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$this->foreground = $temp;
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}
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$this->bold = $this->underline = $this->blink = $this->color = $this->reverse = false;
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break;
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case 1: // Turn bold mode on
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if (!$this->bold) {
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$this->attrs[$this->y][$this->x] = '<b>';
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$this->bold = true;
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}
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break;
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case 4: // Turn underline mode on
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if (!$this->underline) {
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$this->attrs[$this->y][$this->x] = '<u>';
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$this->underline = true;
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}
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break;
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case 5: // Turn blinking mode on
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if (!$this->blink) {
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$this->attrs[$this->y][$this->x] = '<blink>';
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$this->blink = true;
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}
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break;
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case 7: // Turn reverse video on
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$this->reverse = !$this->reverse;
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$temp = $this->background;
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$this->background = $this->foreground;
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$this->foreground = $temp;
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$this->attrs[$this->y][$this->x] = '<span style="color: ' . $this->foreground . '; background: ' . $this->background . '">';
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if ($this->color) {
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$this->attrs[$this->y][$this->x] = '</span>' . $this->attrs[$this->y][$this->x];
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}
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$this->color = true;
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break;
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default: // set colors
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//$front = $this->reverse ? &$this->background : &$this->foreground;
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$front = &$this->{ $this->reverse ? 'background' : 'foreground' };
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//$back = $this->reverse ? &$this->foreground : &$this->background;
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$back = &$this->{ $this->reverse ? 'foreground' : 'background' };
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switch ($mod) {
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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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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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unset($temp);
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$this->attrs[$this->y][$this->x] = '<span style="color: ' . $this->foreground . '; background: ' . $this->background . '">';
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if ($this->color) {
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$this->attrs[$this->y][$this->x] = '</span>' . $this->attrs[$this->y][$this->x];
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}
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$this->color = true;
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}
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}
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break;
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default:
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user_error("{$this->ansi} unsupported\r\n");
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}
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}
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$this->ansi = '';
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continue;
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}
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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 "\x0F": // shift
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break;
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case "\x1B": // start ANSI escape code
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$this->ansi.= "\x1B";
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break;
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default:
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$this->screen[$this->y] = substr_replace(
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$this->screen[$this->y],
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$source[$i],
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$this->x,
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1
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);
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if ($this->x > $this->max_x) {
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$this->x = 0;
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$this->y++;
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} else {
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$this->x++;
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}
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}
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}
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}
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/**
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* Add a new line
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*
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* Also update the $this->screen and $this->history buffers
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*
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* @access private
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*/
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function _newLine()
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{
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//if ($this->y < $this->max_y) {
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// $this->y++;
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//}
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while ($this->y >= $this->max_y) {
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$this->history = array_merge($this->history, array(array_shift($this->screen)));
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$this->screen[] = '';
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$this->history_attrs = array_merge($this->history_attrs, array(array_shift($this->attrs)));
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$this->attrs[] = $this->attr_row;
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if (count($this->history) >= $this->max_history) {
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array_shift($this->history);
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array_shift($this->history_attrs);
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}
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$this->y--;
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}
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$this->y++;
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}
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/**
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* Returns the current screen without preformating
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*
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* @access private
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* @return String
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*/
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function _getScreen()
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{
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$output = '';
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for ($i = 0; $i <= $this->max_y; $i++) {
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for ($j = 0; $j <= $this->max_x + 1; $j++) {
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if (isset($this->attrs[$i][$j])) {
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$output.= $this->attrs[$i][$j];
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}
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if (isset($this->screen[$i][$j])) {
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$output.= htmlspecialchars($this->screen[$i][$j]);
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}
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}
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$output.= "\r\n";
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}
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return rtrim($output);
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}
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/**
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* Returns the current screen
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*
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* @access public
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* @return String
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*/
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function getScreen()
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{
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return '<pre style="color: white; background: black" width="' . ($this->max_x + 1) . '">' . $this->_getScreen() . '</pre>';
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}
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/**
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* Returns the current screen and the x previous lines
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*
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* @access public
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* @return String
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*/
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function getHistory()
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{
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$scrollback = '';
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for ($i = 0; $i < count($this->history); $i++) {
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for ($j = 0; $j <= $this->max_x + 1; $j++) {
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if (isset($this->history_attrs[$i][$j])) {
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$scrollback.= $this->history_attrs[$i][$j];
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}
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if (isset($this->history[$i][$j])) {
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$scrollback.= htmlspecialchars($this->history[$i][$j]);
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}
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}
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$scrollback.= "\r\n";
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}
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$scrollback.= $this->_getScreen();
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return '<pre style="color: white; background: black" width="' . ($this->max_x + 1) . '">' . $scrollback . '</pre>';
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}
|
|
}
|