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7 PointedEar 1
<?php
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/**
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 * A footnote list contains {@link #Footnote Footnotes}
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 *
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 * @author Thomas 'PointedEars' Lahn &lt;php@PointedEars.de&gt;
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 */
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class FootnoteList
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{
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  /**
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   * The footnotes of this list
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   *
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   * @var Array
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   */
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  protected $footnotes;
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  /**
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   * Last used number sign for a footnote
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   *
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   * @var int
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   */
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  protected $lastNumberSign;
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  public function __construct()
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  {
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    $this->clear();
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  }
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29
  /**
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   * Clears the footnote list
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   */
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  public function clear()
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  {
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    $this->footnotes = array();
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    $this->lastNumberSign = 0;
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  }
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38
  /**
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   * Adds a footnote to the list (unless already specified)
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   *
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   * @param string $name
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   *   Name of the footnote
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   * @param string $sign
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   *   Sign of the footnote.  If empty, the next available number is used.
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   * @param string $text
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   *   Text for the footnote
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   * @return string
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   *   The code for printing the footnote reference.
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   */
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  public function add($name, $sign = '', $text = '')
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  {
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    $footnotes =& $this->footnotes;
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    if (!isset($footnotes[$name]))
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    {
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      if (!$sign)
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      {
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        $sign = ++$this->lastNumberSign;
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      }
11 PointedEar 60
      else if (is_int($sign))
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      {
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        $this->lastNumberSign = $sign + 1;
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      }
8 PointedEar 64
 
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      $footnotes[$name] = new Footnote($name, $sign, $text);
7 PointedEar 66
    }
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8 PointedEar 68
    return $footnotes[$name]->getRef();
7 PointedEar 69
  }
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  /**
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   * Prints the list of footnotes
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   */
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  public function printMe()
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  {
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    $footnotes =& $this->footnotes;
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8 PointedEar 78
    function cmp($a, $b)
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    {
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      if ($a->sign < $b->sign)
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      {
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        return -1;
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      }
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      else if ($a->sign > $b->sign)
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      {
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        return 1;
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      }
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      else
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      {
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        return 0;
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      }
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    }
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    uasort($footnotes, 'cmp');
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    ?><table class="footnotes">
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    <?php
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7 PointedEar 99
    foreach ($footnotes as $name => &$footnote)
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    {
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      $footnote->printMe();
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    }
8 PointedEar 103
 
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    ?></table><?php
7 PointedEar 105
  }
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  /**
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   * Prints the list of footnotes and clears the list in memory
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   */
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  public function flush()
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  {
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    $this->printMe();
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    $this->clear();
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  }
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}
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/**
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 * A footnote to be used in a {@link #FootnoteList "footnote list"}
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 *
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 * @author Thomas 'PointedEars' Lahn &lt;php@PointedEars.de&gt;
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 */
122
class Footnote
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{
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  /**
8 PointedEar 125
   * The name of this footnote
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   *
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   * @var string
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   */
129
  protected $name = '';
130
 
131
  /**
7 PointedEar 132
   * The sign used for referring to this footnote
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   *
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   * @var string
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   */
136
  protected $sign = '';
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138
  /**
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   * The text for this footnote
140
   *
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   * @var string
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   */
143
  protected $text = '';
144
 
145
  /**
8 PointedEar 146
   * The number of times this footnote has been referred
147
   *
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   * @var int
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   */
150
  protected $references = 0;
151
 
152
  /**
7 PointedEar 153
   * Creates a footnote
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   *
8 PointedEar 155
   * @param string $name
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   *   The name of this footnote
7 PointedEar 157
   * @param string $sign
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   *   The sign that should be used for referring to this footnote
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   * @param string $text
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   *   The text for this footnote
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   */
8 PointedEar 162
  public function __construct($name, $sign, $text)
7 PointedEar 163
  {
8 PointedEar 164
    $this->name = $name;
7 PointedEar 165
    $this->sign = $sign;
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    $this->text = $text;
167
  }
8 PointedEar 168
 
169
  /**
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   * Universal getter
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   *
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   * @param string $name
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   *   Name of the property to be read-accessed.  Currently only 'sign'
174
   *   is supported.
10 PointedEar 175
   * @throws InvalidArgumentException if a non-existing property is accessed
8 PointedEar 176
   * @return mixed
177
   *   Property value
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   */
179
  public function __get($name)
180
  {
181
    if ($name === 'sign')
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    {
183
      return $this->sign;
184
    }
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    else
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    {
10 PointedEar 187
      throw new InvalidArgumentException(
188
        'No such property ' . get_class($this) . "::\$$name");
8 PointedEar 189
    }
190
  }
7 PointedEar 191
 
192
  /**
193
   * Returns the reference for this footnote
194
   *
195
   * @return string
196
   */
8 PointedEar 197
  public function getRef()
7 PointedEar 198
  {
8 PointedEar 199
    $s = $this->name;
200
 
201
    $ret = "<sup><a href='#footnote-{$s}'"
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      . ($this->references === 0
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        ? " name='fn-{$s}-ref' id='fn-{$s}-ref'"
204
        : '')
205
      . " class='footnote'>{$this->sign}</a></sup>";
206
 
207
    ++$this->references;
208
 
209
    return $ret;
7 PointedEar 210
  }
211
 
212
  /**
213
   * Prints this footnote in a footnote list
214
   */
215
  public function printMe()
216
  {
8 PointedEar 217
    $s = $this->name;
218
 
219
    echo "  <tr>
220
        <th><sup><a name='footnote-{$s}' id='footnote-{$s}' class='footnote'
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          >{$this->sign}</a></sup><a href='#fn-{$s}-ref' name='footnote-{$s}'
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          id='footnote-{$s}' class='backref'>&#8593;</a></th>
223
        <td>{$this->text}</td>
224
      </tr>
225
    ";
7 PointedEar 226
  }
227
}
228
 
229
?>