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<?php
/**
* This file is part of Linfo (c) 2011 Joseph Gillotti.
*
* Linfo is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Linfo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Linfo. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Keep out hackers...
*/
defined('IN_INFO') or exit;
/**
* Output in ncurses format for client side CLI functionality
* @author Joseph Gillotti
*/
class out_ncurses {
// Localize fun shit
private
// Store our windows here
$_windows = array(),
$_max_dims = array(),
// ncurses loaded?
$loaded = true;
// Start us off by checking important shit and starting it
public function __construct() {
// We obviously need this
if (!extension_loaded('ncurses')) {
echo "ncurses extension not loaded\n";
$this->loaded = false;
exit(1);
}
// Start ncurses
ncurses_init();
ncurses_timeout(0);
}
// Make sure ncurses_end() always gets called no matter what;
// not doing so will leave the terminal messed up until the user
// runs 'reset'
public function __destruct() {
if ($this->loaded)
ncurses_end();
}
// Handle the shit
public function work($info, $settings, $getter) {
// Gain access to translations
global $lang;
// Say we're called more than once. Kill previous remnants
if (count($this->_windows) > 0)
$this->_kill_windows();
// Get dimensions and give lovely header text
$fullscreen = ncurses_newwin(0, 0, 0, 0);
ncurses_wrefresh($fullscreen);
ncurses_getmaxyx ($fullscreen, $x, $y);
ncurses_mvwaddstr($fullscreen, 0, 0, 'Generated by '.AppName.' ('.VERSION.') on '.date('m/d/Y @ h:i:s A (T)'));
ncurses_wrefresh($fullscreen);
$this->_max_dims = array($x, $y);
// Some important windows
$core_wins = array(
array(
'name' => $lang['core'],
'content' => array(
array($lang['os'], $info['OS']),
array_key_exists('Distro', $info) ? array($lang['distro'], $info['Distro']['name'] . ($info['Distro']['version'] ? ' '.$info['Distro']['version'] : '') ) : false,
array($lang['kernel'], $info['Kernel']),
array_key_exists('Model', $info) && !empty($info['Model']) ? array($lang['model'], $info['Model']) : false,
array($lang['uptime'], str_ireplace(array(' ', 'days', 'minutes', 'hours', 'seconds'), array('', 'd', 'm', 'h', 's'), reset(explode(';', $info['UpTime'])))),
array($lang['hostname'], $info['HostName']),
array_key_exists('CPUArchitecture', $info) ? array($lang['cpu_arch'], $info['CPUArchitecture']) : false,
array($lang['load'], implode(' ', (array) $info['Load']))
)
),
array(
'name' => $lang['memory'],
'content' => array(
array($lang['size'], byte_convert($info['RAM']['total'])),
array($lang['used'], byte_convert($info['RAM']['total'] - $info['RAM']['free'])),
array($lang['free'], byte_convert($info['RAM']['free'])),
)
)
);
// Show them
$h = 1;
foreach ($core_wins as $win) {
list($width, $height) = $this->_window_with_lines($win['name'], $win['content'], $h, 0);
$h += $height + 1;
}
// Makeshift event loop
while (true) {
// Die on input
$getch = ncurses_getch();
if ($getch > 0 && $getch == 113) {
$this->__destruct();
echo "\nEnding at your request.\n";
exit(0);
}
// Stop temporariy
ncurses_napms(1000);
// Call ourselves
$this->work($getter->getAll(), $settings, $getter);
}
}
// Create a window with various lines as content
private function _window_with_lines($name, $lines, $x = 5, $y = 5, $set_width = false) {
// Need an array of lines.
$lines = (array) $lines;
// Ignore disabled liens
$lines = array_filter($lines);
// Do we not have a specific set width? Calculate the longest line
if (!is_numeric($set_width)) {
$longest_line = strlen($name) + 10;
foreach ($lines as $line) {
$length = strlen(implode('', $line));
$longest_line = $length > $longest_line ? $length : $longest_line;
}
$width = $longest_line + 4;
}
// Otherwise we do have a set with
else
$width = $set_width;
// Calculate window hight
$height = 3 + count($lines);
// Create window
$win = ncurses_newwin($height, $width, $x, $y);
// This character will be the side borders
$side = ord('|');
// Do the borders of the window
ncurses_wborder($win, $side, $side, ord('-'), ord('-'), ord('/'), ord('\\'), ord('\\'), ord('/'));
// Add window title string
ncurses_mvwaddstr($win, 1, 1, $this->_charpad($name, $width, 'c', '='));
// Keep track of vertical position for each line
$v = 1;
// Go through and output each line, while incrementing line position counter
foreach ($lines as $line) {
ncurses_mvwaddstr($win, $v + 1, 1, $this->_charpad($line[0] . $this->_charpad($line[1], $width - strlen($line[0]), 'r', '.'), $width, 'n'));
$v++;
}
// Show it
ncurses_wrefresh($win);
// Store it so we can kill it later
$this->_windows[] = &$win;
// Return window dimensions
return array($width, $height);
}
// Kill all windows
private function _kill_windows() {
foreach ($this->_windows as $win) {
is_resource($win) &&
ncurses_delwin($win);
}
}
// Because I got tired of sprintf
private function _charpad($string, $length, $direction, $filler = ' ') {
// Keep length of string handy here
$strlen = strlen($string);
// Difference between max length and string length
$difference = $length - $strlen;
// If the string length is bigger than the max, just return string truncated to the max length
if ($difference < 0)
return substr($string, 0, $length);
// Deal with direction
switch ($direction) {
// Right aligned (padded to the left)
case 'r':
return str_repeat($filler, $difference - 2) . $string;
break;
// Left aligned (padded to the right)
case 'l':
return $string . str_repeat($filler, $difference - 2);
break;
// Centered (padded left and right)
case 'c':
$cdiff = floor($difference / 2) - ($difference % 2 == 0 ? 1 : 0);
return str_repeat($filler, $cdiff - 1) . $string . str_repeat($filler, $cdiff);
break;
// Not padded; returned as is (provided not longer than max, as tested above)
case 'n':
return $string;
break;
// Uhh not sure?
default:
return '';
break;
}
}
}
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