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ANSI.php
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<?php /** * Pure-PHP ANSI Decoder * * PHP versions 4 and 5 * * If you call read() in Net_SSH2 you may get {@link http://en.wikipedia.org/wiki/ANSI_escape_code ANSI escape codes} back. * They'd look like chr(0x1B) . '[00m' or whatever (0x1B = ESC). They tell a * {@link http://en.wikipedia.org/wiki/Terminal_emulator terminal emulator} how to format the characters, what * color to display them in, etc. File_ANSI is a {@link http://en.wikipedia.org/wiki/VT100 VT100} terminal emulator. * * LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @category File * @package File_ANSI * @author Jim Wigginton <terrafrost@php.net> * @copyright MMXII Jim Wigginton * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link http://phpseclib.sourceforge.net */ /** * Pure-PHP ANSI Decoder * * @package File_ANSI * @author Jim Wigginton <terrafrost@php.net> * @access public */ class File_ANSI { /** * Max Width * * @var Integer * @access private */ public $max_x; /** * Max Height * * @var Integer * @access private */ public $max_y; /** * Max History * * @var Integer * @access private */ public $max_history; /** * History * * @var Array * @access private */ public $history; /** * History Attributes * * @var Array * @access private */ public $history_attrs; /** * Current Column * * @var Integer * @access private */ public $x; /** * Current Row * * @var Integer * @access private */ public $y; /** * Old Column * * @var Integer * @access private */ public $old_x; /** * Old Row * * @var Integer * @access private */ public $old_y; /** * An empty attribute row * * @var Array * @access private */ public $attr_row; /** * The current screen text * * @var Array * @access private */ public $screen; /** * The current screen attributes * * @var Array * @access private */ public $attrs; /** * The current foreground color * * @var String * @access private */ public $foreground; /** * The current background color * * @var String * @access private */ public $background; /** * Bold flag * * @var Boolean * @access private */ public $bold; /** * Underline flag * * @var Boolean * @access private */ public $underline; /** * Blink flag * * @var Boolean * @access private */ public $blink; /** * Reverse flag * * @var Boolean * @access private */ public $reverse; /** * Color flag * * @var Boolean * @access private */ public $color; /** * Current ANSI code * * @var String * @access private */ public $ansi; /** * Default Constructor. * * @return File_ANSI * @access public */ public function __construct() { $this->setHistory(200); $this->setDimensions(80, 24); } /** * Set terminal width and height * * Resets the screen as well * * @param Integer $x * @param Integer $y * * @access public */ public function setDimensions($x, $y) { $this->max_x = $x - 1; $this->max_y = $y - 1; $this->x = $this->y = 0; $this->history = $this->history_attrs = array(); $this->attr_row = array_fill(0, $this->max_x + 1, ''); $this->screen = array_fill(0, $this->max_y + 1, ''); $this->attrs = array_fill(0, $this->max_y + 1, $this->attr_row); $this->foreground = 'white'; $this->background = 'black'; $this->bold = false; $this->underline = false; $this->blink = false; $this->reverse = false; $this->color = false; $this->ansi = ''; } /** * Set the number of lines that should be logged past the terminal height * * @param Integer $x * @param Integer $y * * @access public */ public function setHistory($history) { $this->max_history = $history; } /** * Load a string * * @param String $source * * @access public */ public function loadString($source) { $this->setDimensions($this->max_x + 1, $this->max_y + 1); $this->appendString($source); } /** * Appdend a string * * @param String $source * * @access public */ public function appendString($source) { for ($i = 0; $i < strlen($source); $i++) { if (strlen($this->ansi)) { $this->ansi .= $source[$i]; $chr = ord($source[$i]); // http://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements // single character CSI's not currently supported switch (true) { case $this->ansi == "\x1B=": $this->ansi = ''; continue 2; case strlen($this->ansi) == 2 && $chr >= 64 && $chr <= 95 && $chr != ord('['): case strlen($this->ansi) > 2 && $chr >= 64 && $chr <= 126: break; default: continue 2; } // http://ascii-table.com/ansi-escape-sequences-vt-100.php switch ($this->ansi) { case "\x1B[H": // Move cursor to upper left corner $this->old_x = $this->x; $this->old_y = $this->y; $this->x = $this->y = 0; break; case "\x1B[J": // Clear screen from cursor down $this->history = array_merge($this->history, array_slice(array_splice($this->screen, $this->y + 1), 0, $this->old_y)); $this->screen = array_merge($this->screen, array_fill($this->y, $this->max_y, '')); $this->history_attrs = array_merge($this->history_attrs, array_slice(array_splice($this->attrs, $this->y + 1), 0, $this->old_y)); $this->attrs = array_merge($this->attrs, array_fill($this->y, $this->max_y, $this->attr_row)); if (count($this->history) == $this->max_history) { array_shift($this->history); array_shift($this->history_attrs); } case "\x1B[K": // Clear screen from cursor right $this->screen[$this->y] = substr($this->screen[$this->y], 0, $this->x); array_splice($this->attrs[$this->y], $this->x + 1); break; case "\x1B[2K": // Clear entire line $this->screen[$this->y] = str_repeat(' ', $this->x); $this->attrs[$this->y] = $this->attr_row; break; case "\x1B[?1h": // set cursor key to application case "\x1B[?25h": // show the cursor break; case "\x1BE": // Move to next line $this->_newLine(); $this->x = 0; break; default: switch (true) { case preg_match('#\x1B\[(\d+);(\d+)H#', $this->ansi, $match): // Move cursor to screen location v,h $this->old_x = $this->x; $this->old_y = $this->y; $this->x = $match[2] - 1; $this->y = $match[1] - 1; break; case preg_match('#\x1B\[(\d+)C#', $this->ansi, $match): // Move cursor right n lines $this->old_x = $this->x; $x = $match[1] - 1; break; case preg_match('#\x1B\[(\d+);(\d+)r#', $this->ansi, $match): // Set top and bottom lines of a window break; case preg_match('#\x1B\[(\d*(?:;\d*)*)m#', $this->ansi, $match): // character attributes $mods = explode(';', $match[1]); foreach ($mods as $mod) { switch ($mod) { case 0: // Turn off character attributes $this->attrs[$this->y][$this->x] = ''; if ($this->bold) { $this->attrs[$this->y][$this->x] .= '</b>'; } if ($this->underline) { $this->attrs[$this->y][$this->x] .= '</u>'; } if ($this->blink) { $this->attrs[$this->y][$this->x] .= '</blink>'; } if ($this->color) { $this->attrs[$this->y][$this->x] .= '</span>'; } if ($this->reverse) { $temp = $this->background; $this->background = $this->foreground; $this->foreground = $temp; } $this->bold = $this->underline = $this->blink = $this->color = $this->reverse = false; break; case 1: // Turn bold mode on if (!$this->bold) { $this->attrs[$this->y][$this->x] = '<b>'; $this->bold = true; } break; case 4: // Turn underline mode on if (!$this->underline) { $this->attrs[$this->y][$this->x] = '<u>'; $this->underline = true; } break; case 5: // Turn blinking mode on if (!$this->blink) { $this->attrs[$this->y][$this->x] = '<blink>'; $this->blink = true; } break; case 7: // Turn reverse video on $this->reverse = !$this->reverse; $temp = $this->background; $this->background = $this->foreground; $this->foreground = $temp; $this->attrs[$this->y][$this->x] = '<span style="color: '.$this->foreground.'; background: '.$this->background.'">'; if ($this->color) { $this->attrs[$this->y][$this->x] = '</span>'.$this->attrs[$this->y][$this->x]; } $this->color = true; break; default: // set colors //$front = $this->reverse ? &$this->background : &$this->foreground; $front = &$this->{$this->reverse ? 'background' : 'foreground'}; //$back = $this->reverse ? &$this->foreground : &$this->background; $back = &$this->{$this->reverse ? 'foreground' : 'background'}; switch ($mod) { case 30: $front = 'black'; break; case 31: $front = 'red'; break; case 32: $front = 'green'; break; case 33: $front = 'yellow'; break; case 34: $front = 'blue'; break; case 35: $front = 'magenta'; break; case 36: $front = 'cyan'; break; case 37: $front = 'white'; break; case 40: $back = 'black'; break; case 41: $back = 'red'; break; case 42: $back = 'green'; break; case 43: $back = 'yellow'; break; case 44: $back = 'blue'; break; case 45: $back = 'magenta'; break; case 46: $back = 'cyan'; break; case 47: $back = 'white'; break; default: user_error('Unsupported attribute: '.$mod); $this->ansi = ''; break 2; } unset($temp); $this->attrs[$this->y][$this->x] = '<span style="color: '.$this->foreground.'; background: '.$this->background.'">'; if ($this->color) { $this->attrs[$this->y][$this->x] = '</span>'.$this->attrs[$this->y][$this->x]; } $this->color = true; } } break; default: user_error("{$this->ansi} unsupported\r\n"); } } $this->ansi = ''; continue; } switch ($source[$i]) { case "\r": $this->x = 0; break; case "\n": $this->_newLine(); break; case "\x0F": // shift break; case "\x1B": // start ANSI escape code $this->ansi .= "\x1B"; break; default: $this->screen[$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 $this->history buffers * * @access private */ public function _newLine() { //if ($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 screen without preformating * * @access private * @return String */ public function _getScreen() { $output = ''; for ($i = 0; $i <= $this->max_y; $i++) { for ($j = 0; $j <= $this->max_x + 1; $j++) { if (isset($this->attrs[$i][$j])) { $output .= $this->attrs[$i][$j]; } if (isset($this->screen[$i][$j])) { $output .= htmlspecialchars($this->screen[$i][$j]); } } $output .= "\r\n"; } return rtrim($output); } /** * Returns the current screen * * @access public * @return String */ public function getScreen() { return '<pre style="color: white; background: black" width="'.($this->max_x + 1).'">'.$this->_getScreen().'</pre>'; } /** * Returns the current screen and the x previous lines * * @access public * @return String */ public function getHistory() { $scrollback = ''; for ($i = 0; $i < count($this->history); $i++) { for ($j = 0; $j <= $this->max_x + 1; $j++) { if (isset($this->history_attrs[$i][$j])) { $scrollback .= $this->history_attrs[$i][$j]; } if (isset($this->history[$i][$j])) { $scrollback .= htmlspecialchars($this->history[$i][$j]); } } $scrollback .= "\r\n"; } $scrollback .= $this->_getScreen(); return '<pre style="color: white; background: black" width="'.($this->max_x + 1).'">'.$scrollback.'</pre>'; } }