Current File : //data/www_bck/varak.net_bck/ampache.varak.net/lib/class/ui.class.php
<?php
/* vim:set softtabstop=4 shiftwidth=4 expandtab: */
/**
*
* LICENSE: GNU General Public License, version 2 (GPLv2)
* Copyright 2001 - 2014 Ampache.org
*
* This program 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; version 2
* of the License.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
// A collection of methods related to the user interface
class UI
{
private static $_classes;
private static $_ticker;
private static $_icon_cache;
public function __construct()
{
return false;
}
/**
* access_denied
*
* Throw an error when they try to do something naughty.
*/
public static function access_denied($error = 'Access Denied')
{
// Clear any buffered crap
ob_end_clean();
header("HTTP/1.1 403 $error");
require_once AmpConfig::get('prefix') . '/templates/show_denied.inc.php';
exit;
}
/**
* ajax_include
*
* Does some trickery with the output buffer to return the output of a
* template.
*/
public static function ajax_include($template)
{
ob_start();
require AmpConfig::get('prefix') . '/templates/' . $template;
$output = ob_get_contents();
ob_end_clean();
return $output;
}
/**
* check_iconv
*
* Checks to see whether iconv is available;
*/
public static function check_iconv()
{
if (function_exists('iconv') && function_exists('iconv_substr')) {
return true;
}
return false;
}
/**
* check_ticker
*
* Stupid little cutesie thing to ratelimit output of long-running
* operations.
*/
public static function check_ticker()
{
if (!isset(self::$_ticker) || (time() > self::$_ticker + 1)) {
self::$_ticker = time();
return true;
}
return false;
}
/**
* clean_utf8
*
* Removes characters that aren't valid in XML (which is a subset of valid
* UTF-8, but close enough for our purposes.)
* See http://www.w3.org/TR/2006/REC-xml-20060816/#charsets
*/
public static function clean_utf8($string)
{
if ($string) {
$clean = preg_replace('/[^\x{9}\x{a}\x{d}\x{20}-\x{d7ff}\x{e000}-\x{fffd}\x{10000}-\x{10ffff}]|[\x{7f}-\x{84}\x{86}-\x{9f}\x{fdd0}-\x{fddf}\x{1fffe}-\x{1ffff}\x{2fffe}-\x{2ffff}\x{3fffe}-\x{3ffff}\x{4fffe}-\x{4ffff}\x{5fffe}-\x{5ffff}\x{6fffe}-\x{6ffff}\x{7fffe}-\x{7ffff}\x{8fffe}-\x{8ffff}\x{9fffe}-\x{9ffff}\x{afffe}-\x{affff}\x{bfffe}-\x{bffff}\x{cfffe}-\x{cffff}\x{dfffe}-\x{dffff}\x{efffe}-\x{effff}\x{ffffe}-\x{fffff}\x{10fffe}-\x{10ffff}]/u', '', $string);
// Other cleanup regex. Takes too long to process.
/*$regex = <<<'END'
/
(
(?: [\x00-\x7F] # single-byte sequences 0xxxxxxx
| [\xC0-\xDF][\x80-\xBF] # double-byte sequences 110xxxxx 10xxxxxx
| [\xE0-\xEF][\x80-\xBF]{2} # triple-byte sequences 1110xxxx 10xxxxxx * 2
| [\xF0-\xF7][\x80-\xBF]{3} # quadruple-byte sequence 11110xxx 10xxxxxx * 3
){1,100} # ...one or more times
)
| . # anything else
/x
END;
$clean = preg_replace($regex, '$1', $string);*/
if ($clean) {
return $clean;
}
debug_event('UI', 'Charset cleanup failed, something might break', 1);
}
}
/**
* flip_class
*
* First initialised with an array of two class names. Subsequent calls
* reverse the array then return the first element.
*/
public static function flip_class($classes = null)
{
if (is_array($classes)) {
self::$_classes = $classes;
} else {
self::$_classes = array_reverse(self::$_classes);
}
return self::$_classes[0];
}
/**
* format_bytes
*
* Turns a size in bytes into the best human-readable value
*/
public static function format_bytes($value, $precision = 2)
{
$pass = 0;
while (strlen(floor($value)) > 3) {
$value /= 1024;
$pass++;
}
switch ($pass) {
case 1: $unit = 'kB'; break;
case 2: $unit = 'MB'; break;
case 3: $unit = 'GB'; break;
case 4: $unit = 'TB'; break;
case 5: $unit = 'PB'; break;
default: $unit = 'B'; break;
}
return round($value, $precision) . ' ' . $unit;
}
/**
* unformat_bytes
*
* Parses a human-readable size
*/
public static function unformat_bytes($value)
{
if (preg_match('/^([0-9]+) *([[:alpha:]]+)$/', $value, $matches)) {
$value = $matches[1];
$unit = strtolower(substr($matches[2], 0, 1));
} else {
return $value;
}
switch ($unit) {
case 'p':
$value *= 1024;
case 't':
$value *= 1024;
case 'g':
$value *= 1024;
case 'm':
$value *= 1024;
case 'k':
$value *= 1024;
}
return $value;
}
/**
* get_icon
*
* Returns an <img> tag for the specified icon
*/
public static function get_icon($name, $title = null, $id = null)
{
$bUseSprite = file_exists(AmpConfig::get('prefix') . AmpConfig::get('theme_path') . '/images/icons.sprite.png');
if (is_array($name)) {
$hover_name = $name[1];
$name = $name[0];
}
$title = $title ?: T_(ucfirst($name));
$icon_url = self::_find_icon($name);
if (isset($hover_name)) {
$hover_url = self::_find_icon($hover_name);
}
if ($bUseSprite) {
$tag = '<span class="sprite sprite-icon_'.$name.'"';
} else {
$tag = '<img src="' . $icon_url . '" ';
}
if ($id) {
$tag .= 'id="' . $id . '" ';
}
$tag .= 'alt="' . $title . '" ';
$tag .= 'title="' . $title . '" ';
if (isset($hover_name) && isset($hover_url)) {
$tag .= 'onmouseover="this.src=\'' . $hover_url . '\'; return true;"';
$tag .= 'onmouseout="this.src=\'' . $icon_url . '\'; return true;" ';
}
if ($bUseSprite) {
$tag .= '></span>';
} else {
$tag .= '/>';
}
return $tag;
}
/**
* _find_icon
*
* Does the finding icon thing
*/
private static function _find_icon($name)
{
if (isset(self::$_icon_cache[$name]) && $url = self::$_icon_cache[$name]) {
return $url;
}
$filename = 'icon_' . $name . '.png';
$path = AmpConfig::get('theme_path') . '/images/icons/';
if (!file_exists(AmpConfig::get('prefix') . $path . $filename)) {
$path = '/images/';
}
$url = AmpConfig::get('web_path') . $path . $filename;
self::$_icon_cache[$name] = $url;
return $url;
}
/**
* show_header
*
* For now this just shows the header template
*/
public static function show_header()
{
require_once AmpConfig::get('prefix') . '/templates/header.inc.php';
}
/**
* show_mainframes
*
* For now this just shows the mainframes template
*/
public static function show_mainframes()
{
require_once AmpConfig::get('prefix') . '/templates/mainframes.inc.php';
}
/**
* show_footer
*
* Shows the footer template and possibly profiling info.
*/
public static function show_footer()
{
require_once AmpConfig::get('prefix') . '/templates/footer.inc.php';
if (isset($_REQUEST['profiling'])) {
Dba::show_profile();
}
}
/**
* show_box_top
*
* This shows the top of the box.
*/
public static function show_box_top($title = '', $class = '')
{
require AmpConfig::get('prefix') . '/templates/show_box_top.inc.php';
}
/**
* show_box_bottom
*
* This shows the bottom of the box
*/
public static function show_box_bottom()
{
require AmpConfig::get('prefix') . '/templates/show_box_bottom.inc.php';
}
/**
* update_text
*
* Convenience function that, if the output is going to a browser,
* blarfs JS to do a fancy update. Otherwise it just outputs the text.
*/
public static function update_text($field, $value)
{
if (defined('CLI')) {
echo $value . "\n";
return;
}
echo '<script type="text/javascript">';
echo "updateText('$field', '$value');";
echo "</script>\n";
ob_flush();
flush();
}
}
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