includes/tagcloud.php
author Dan
Fri, 21 Aug 2009 20:30:52 -0400
changeset 1098 be6cfe79128c
parent 1081 745200a9cc2a
child 1227 bdac73ed481e
permissions -rw-r--r--
Made internal links to the Admin namespace much smarter. (They do the login box and stuff.)
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<?php
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/*
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 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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 * Copyright (C) 2006-2009 Dan Fuhry
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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/**
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 * Class for formatting and displaying tag clouds. Loosely based the reference cloud engine from <http://www.lotsofcode.com/php/tutorials/tag-cloud>.
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 * @package Enano
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 * @subpackage Presentation/UI
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 * @copyright (C) 2007 Dan Fuhry
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 * @license GNU General Public License, version 2 or at your option any later versionc
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 */
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class TagCloud
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{
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  /**
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   * The list of words in the cloud.
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   * @var array
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   */
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  var $words = array();
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  /**
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   * Constructor.
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   * @param array Optional. An initial list of words, just a plain old array.
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   */
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  function __construct($words = array())
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  {
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    if ( count($words) > 0 )
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    {
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      foreach ( $words as $word )
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        $this->add_word($word);
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    }
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  }
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  /**
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   * Adds a word into the word list.
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   * @param string The word to add
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   */
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  function add_word($word)
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  {
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    $word = sanitize_tag($word);
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    if ( isset($this->words[$word]) )
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      $this->words[$word] += 1;
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    else
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      $this->words[$word] = 1;
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  }
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  /**
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   * Returns the total size of the cloud.
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   * @return int
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   */
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  function get_cloud_size()
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  {
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    return array_sum($this->words);
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  }
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  /**
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   * Shuffles the cloud.
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   */
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  function shuffle_cloud()
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  {
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    $keys = array_keys($this->words);
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    if ( !$keys || empty($keys) || !is_array($keys) )
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      return null;
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    shuffle($keys);
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    if ( !$keys || empty($keys) || !is_array($keys) )
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      return null;
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    $temp = $this->words;
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    $this->words = array();
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    foreach ( $keys as $word )
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    {
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      $this->words[$word] = $temp[$word];
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    }
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    unset($temp);
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  }
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  /**
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   * Returns the popularity index (scale class) for a 1-100 number.
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   * @param int
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   * @return int
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   */
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  function get_scale_class($val)
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  {
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   103
    $ret = 0;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    if ( $val >= 99 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   105
      $ret = 1;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   106
    else if ( $val >= 70 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   107
      $ret = 2;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   108
    else if ( $val >= 60 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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      $ret = 3;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    else if ( $val >= 50 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   111
      $ret = 4;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    else if ( $val >= 40 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   113
      $ret = 5;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    else if ( $val >= 30 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   115
      $ret = 6;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   116
    else if ( $val >= 20 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   117
      $ret = 7;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    else if ( $val >= 10 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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      $ret = 8;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    else if ( $val >= 5 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   121
      $ret = 9;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    return $ret;
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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  }
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   124
  
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  /**
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   * Generates and returns HTML for the cloud.
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   * @param string Optional. The CSS class applied to all <span> tags. Can be "normal" or "small". Defaults to "normal".
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   * @param string Optional. The alignment for the div. Defaults to "center".
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cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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   * @return string
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   */
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  function make_html($span_class = 'normal', $div_align = 'center')
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  {
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    global $lang;
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cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    $html = array();
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    $max  = max($this->words);
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    $size = $this->get_cloud_size();
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    $inc = 0;
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    if ( count($this->words) > 0 )
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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    {
cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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      foreach ( $this->words as $word => $popularity )
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      {
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        $inc++;
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        $word = htmlspecialchars($word);
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        $percent = ( $popularity / $max ) * 100;
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        $index = $this->get_scale_class($percent);
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        $newline = ( $inc == 5 ) ? "<br />" : '';
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        ( $inc == 5 ) ? $inc = 0 : null;
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        $url = makeUrlNS('Special', 'TagCloud/' . htmlspecialchars($word));
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7152ca0a0ce9 Major redesign of rendering pipeline that separates pages saved with MCE from pages saved with the plaintext editor (full description in long commit message)
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        $popstring = ( $popularity == 1 ) ? $lang->get('pagetools_tagcloud_tip_popularity_one') : $lang->get('pagetools_tagcloud_tip_popularity_plural', array('popularity' => $popularity));
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85f91037cd4f Localization is FINISHED, DAMN IT HELLAH YEAH! OVER WITH! Man, it feels to get that off my chest. Release is in under 48 hours, folks. And we're ready for it.
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        $html[] = "<span class='tc_word_{$span_class} tc_{$span_class}_index_{$index}'><a href='$url' title='$popstring'>$word</a></span>"; // $newline";
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      }
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    }
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    $html = '<div style="text-align: ' . $div_align . '; margin: 0 auto; max-width: 400px;">' . implode("\n", $html) . '</div>';
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    return $html;
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  }
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cb7dde69c301 Improved and enabled HTML optimization algorithm; enabled gzip compression; added but did not test at all the tag cloud class in includes/tagcloud.php, this is still very preliminary and not ready for any type of production use
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}
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?>