Html.php

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<?php

namespace Rsi\Fred\Log\Handler;

class Html extends File{

  public $templateIndex = "
    <tr id='ix-[id]' class='prio[prio]'>
      <td class='time'><a href='#[id]'>[time]</a></td>
      <td class='prio'><a href='#[id]'>[name] ([prio])</a></td>
      <td class='message'>[message]</td>
    </tr>";
    //!< Index template ([id] of item, [time], [prio], [name] of prio, and [message] are replaced).

  protected $_lastInsertId = null;

  protected function value($value){
    if($value === null) return '<i>null</i>';
    if($value === false) return '<i>false</i>';
    if($value === true) return '<i>true</i>';
    if($value === '') return '<i>[empty string]</i>';
    return
      (is_string($value) && preg_match('/(^\\s| {2,}|\\s$)/',$value) && ($value = htmlspecialchars($value))) ||
      (strpos($value = htmlspecialchars(trim(str_replace("Array\n(",'array(',print_r($value,true)))),"\n") !== false)
        ? "<pre>$value</pre>"
        : $value;
  }

  protected function format($prio,$context){
    $this->_lastInsertId = $id = \Rsi\Str::random();
    $result = "<tr><td colspan='2'><a name='$id'>{$this->separator}</a></td></tr>\n";
    foreach($context as $key => $value){
      if($special = substr($key,0,1) == '*') $key = substr($key,1);
      $class = ($special ? 'special ' : '') . preg_replace('/\\W+/','-',$key);
      if(($descr = $key) == 'date/time') $descr = "<a href='#ix-$id'>$descr</a>";
      $html = null;
      if(is_array($value)){
        $html = "<table>\n";
        $keys = null;
        foreach($value as $record) if(!is_array($record) || ($keys && (array_keys($record) !== $keys))){
          $keys = false;
          break;
        }
        else $keys = array_keys($record);
        if($keys){
          $html .= "\t\t<tr><th></th><th>" . implode('</th><th>',array_map('htmlspecialchars',$keys)) . "</th></tr>\n";
          foreach($value as $index => $record){
            $html .= "\t\t<tr><th>" . htmlspecialchars($index) . "</th>";
            foreach($record as $data) $html .=
              "<td" . (is_scalar($data) && preg_match('/^[\\d\\-:\\s]+$/',$data) ? " class='number'" : '') . ">" . $this->value($data) . "</td>";
            $html .= "</tr>\n";
          }
        }
        else foreach($value as $key => $data) $html .=
          "\t\t<tr><th>" . htmlspecialchars($key) . "</th><td>" . $this->value($data) . "</td></tr>\n";
        $html .= "\t</table>";
      }
      if(strlen($result .= "<tr class='$class'>\n\t<th>$descr</th>\n\t<td>" . ($html ?: $this->value($value)) . "</td>\n</tr>\n") > $this->maxSize){
        $result .= "<tr class='more'><td colspan='2'>...</td><tr>\n";
        break;
      }
    }
    return $result;
  }

  public function add($prio,$message,$context){
    parent::add($prio,$message,$context);
    if($index = $this->indexFilename) \Rsi\File::write($index,strtr($this->templateIndex,[
      '[id]' => $this->_lastInsertId,
      '[time]' => $this->_lastInsertTime,
      '[prio]' => $prio,
      '[name]' => array_search($prio,$this->_log->constants()),
      '[message]' => htmlspecialchars($message)
    ]),0666,true);
  }

  protected function getIndexFilename(){
    return $this->filename . '.index';
  }

}