/**
* @param \simple_html_dom_node $node
*/
private function emptyNodeContent(\simple_html_dom_node $node)
{
$node->innertext = '';
foreach ($node->children() as $child) {
$this->emptyNodeContent($child);
}
}
/**
* 取得欄位資料.
*
* @param \simple_html_dom_node $row
* @param string $department
* @return array
*/
protected function getColumns($row, $department)
{
static $name = ['domain', 'grade', 'code', 'class', 'name', 'professors', 'hours', 'credit', 'type', 'time', 'location', 'limit'];
// I001：通識
$i = 'I001' === $department ? 0 : 1;
foreach ($row->children() as $node) {
if ($i >= 12) {
break;
}
$result[$name[$i++]] = trim($node->plaintext);
}
return $result ?? [];
}
/**
* @param Operation[]|array $operations
* @param \simple_html_dom_node $oldListNode
* @param \simple_html_dom_node $newListNode
*
* @return string
*/
protected function processOperations($operations, $oldListNode, $newListNode)
{
$output = '';
$indexInOld = 0;
$indexInNew = 0;
$lastOperation = null;
foreach ($operations as $operation) {
$replaced = false;
while ($operation->startInOld > ($operation->action === Operation::ADDED ? $indexInOld : $indexInOld + 1)) {
$li = $oldListNode->children($indexInOld);
$matchingLi = null;
if ($operation->startInNew > ($operation->action === Operation::DELETED ? $indexInNew : $indexInNew + 1)) {
$matchingLi = $newListNode->children($indexInNew);
}
if (null !== $matchingLi) {
$htmlDiff = HtmlDiff::create($li->innertext, $matchingLi->innertext, $this->config);
$li->innertext = $htmlDiff->build();
$indexInNew++;
}
$class = self::CLASS_LIST_ITEM_NONE;
if ($lastOperation === Operation::DELETED && !$replaced) {
$class = self::CLASS_LIST_ITEM_CHANGED;
$replaced = true;
}
$li->setAttribute('class', trim($li->getAttribute('class') . ' ' . $class));
$output .= $li->outertext;
$indexInOld++;
}
switch ($operation->action) {
case Operation::ADDED:
for ($i = $operation->startInNew; $i <= $operation->endInNew; $i++) {
$output .= $this->addListItem($newListNode->children($i - 1));
}
$indexInNew = $operation->endInNew;
break;
case Operation::DELETED:
for ($i = $operation->startInOld; $i <= $operation->endInOld; $i++) {
$output .= $this->deleteListItem($oldListNode->children($i - 1));
}
$indexInOld = $operation->endInOld;
break;
case Operation::CHANGED:
$changeDelta = 0;
for ($i = $operation->startInOld; $i <= $operation->endInOld; $i++) {
$output .= $this->deleteListItem($oldListNode->children($i - 1));
$changeDelta--;
}
for ($i = $operation->startInNew; $i <= $operation->endInNew; $i++) {
$output .= $this->addListItem($newListNode->children($i - 1), $changeDelta < 0);
$changeDelta++;
}
$indexInOld = $operation->endInOld;
$indexInNew = $operation->endInNew;
break;
}
$lastOperation = $operation->action;
}
$oldCount = count($oldListNode->children());
$newCount = count($newListNode->children());
while ($indexInOld < $oldCount) {
$li = $oldListNode->children($indexInOld);
$matchingLi = null;
if ($indexInNew < $newCount) {
$matchingLi = $newListNode->children($indexInNew);
}
if (null !== $matchingLi) {
$htmlDiff = HtmlDiff::create($li->innertext(), $matchingLi->innertext(), $this->config);
$li->innertext = $htmlDiff->build();
$indexInNew++;
}
$class = self::CLASS_LIST_ITEM_NONE;
if ($lastOperation === Operation::DELETED) {
$class = self::CLASS_LIST_ITEM_CHANGED;
}
$li->setAttribute('class', trim($li->getAttribute('class') . ' ' . $class));
$output .= $li->outertext;
$indexInOld++;
}
$newListNode->innertext = $output;
$newListNode->setAttribute('class', trim($newListNode->getAttribute('class') . ' diff-list'));
return $newListNode->outertext;
}