Weblabor

<?php
function getItems() {
  $db = file('db.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
  $entries = array();
  foreach ($db as $line) {
    $entry = new stdClass();
    list($entry->azonosito, $entry->cim, $entry->tartalom, $entry->kulcsszavak, $entry->cimkek) =
      explode('||', $line);
    $entry->cimkek = array_map('trim', explode(', ', $entry->cimkek));
    $entries[] = $entry;
  }
  return $entries;
}

function showAll() {
  $teasers = array();
  $entries = getItems();
  foreach ($entries as $entry) {
    $teasers[] = showTeaser($entry);
  }
  return showTeasers($teasers);
}

function showTeasers($teasers) {
  $teasers = implode("\n", $teasers);
  return <<<__HTML__
  <div class="hfeed">
    $teasers
  </div>
__HTML__;
}

function showTag($tag) {
  $teasers = array();
  $entries = getItems();
  foreach ($entries as $entry) {
    if (in_array($tag, $entry->cimkek)) {
      $teasers[] = showTeaser($entry);
    }
  }
  return showTeasers($teasers);
}

function showItem($azonosito) {
  $teasers = array();
  $entries = getItems();
  foreach ($entries as $entry) {
    $teasers[] = showTeaser($entry);
    if ($entry->azonosito == $azonosito) {
      $cimkek = array_map('checkPlain', $entry->cimkek);
      $felho = '';
      foreach ($cimkek as $cimke) {
        $ecimke = urlencode($cimke);
        $felho .= <<<__HTML__
        <li>
          <a href="?tag=$ecimke" rel="tag">$cimke</a>
        </li>
__HTML__;
      }
      $cim = checkPlain($entry->cim);
      return <<<__HTML__
      <div class="hentry">
        <h2 class="entry-title">
          <a href="?view={$entry->azonosito}">$cim</a>
        </h2>
        <div class="entry-content">
          {$entry->tartalom}
        </div>
        <ul class="tags">
          $felho
        </ul>
      </div>
__HTML__;
    }
  }
}

function showTeaser($entry) {
  $cimkek = array_map('checkPlain', $entry->cimkek);
  $felho = array();
  foreach ($cimkek as $cimke) {
    $ecimke = urlencode($cimke);
    $felho[] = <<<__HTML__
        <li>
          <a href="?tag=$ecimke" rel="tag">$cimke</a>
        </li>
__HTML__;
  }
  $felho = "\n" . implode("\n", $felho);
  $cim = checkPlain($entry->cim);
  $tartalom = nl2br(checkPlain(truncate(strip_tags($entry->tartalom), 240, TRUE, TRUE)), TRUE);
  return <<<__HTML__
    <div class="hentry">
      <h2 class="entry-title">
        <a href="?view={$entry->azonosito}">$cim</a>
      </h2>
      <div class="entry-summary">
        <p>$tartalom</p>
      </div>
      <ul class="tags">$felho
      </ul>
    </div>
__HTML__;
}

function truncate($text, $len, $wordSafe, $dots) {
  if (mb_strlen($text) < $len) {
    return $text;
  }
  if ($dots) {
    $len -= 1;
  }
  if ($wordSafe) {
    $text = mb_substr($text, 0, $len + 1);
    if ($lastSpace = strrpos($text, ' ')) {
      $text = substr($text, 0, $lastSpace);
    }
    else {
      $text = mb_substr($text, 0, $len);
    }
  }
  else {
    $text = mb_substr($text, 0, $len);
  }

  if ($dots) {
    $text .= '…';
  }

  return $text;
}

function checkPlain($text) {
  return htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
}

if (isset($_GET['view'])) {
  echo showItem($_GET['view']);
}
else if (isset($_GET['tag'])) {
  echo showTag($_GET['tag']);
}
else {
  echo showAll();
}