/**
* Trim away the minimum indentation level for all elements in $elements.
*
* @param ezcTemplateBlockTstNode $parentBlock The block which owns elements in $elements.
* @param array(ezcTemplateTstNode) $elements List of elements to trim.
*/
public function trimBlockLevelIndentation(ezcTemplateTstNode $parentBlock, array $elements)
{
// First figure out the smallest amount of indentation that can be removed
$indentation = $parentBlock->minimumWhitespaceColumn();
$nrOfElements = sizeof($elements);
for ($el = 0; $el < $nrOfElements; $el++) {
$element = $elements[$el];
if ($element instanceof ezcTemplateTextBlockTstNode) {
$lines = $element->lines;
$count = count($lines);
for ($i = 0; $i < $count; ++$i) {
// Skip the first line if it is placed after another element (column > 0 ).
// We can only modify lines with leading point at column 0.
if ($i == 0 && $element->firstLineColumn() > 0) {
// It prevents some text nodes from removal.
continue;
}
// Trim the line and leave EOL alone
$lines[$i][0] = $this->trimIndentationLine($lines[$i][0], $indentation);
if ($i == $count - 1) {
if ($el < $nrOfElements - 1) {
if ($elements[$el + 1] instanceof ezcTemplateBlockTstNode && !$elements[$el + 1] instanceof ezcTemplateOutputBlockTstNode) {
$trimmed = trim($lines[$i][0], " \t");
if (strlen($trimmed) == 0) {
$lines[$i][0] = "";
}
}
} else {
if ($parentBlock instanceof ezcTemplateBlockTstNode && !$parentBlock instanceof ezcTemplateOutputBlockTstNode) {
$last = sizeof($lines) - 1;
$trimmed = trim($lines[$last][0], " \t");
if (strlen(trim($lines[$last][0], " \t")) == 0) {
$lines[$last][0] = "";
}
}
}
}
}
$element->setTextLines($lines);
} elseif ($element instanceof ezcTemplateConditionBodyTstNode) {
$this->trimBlockLevelIndentation($element, $element->children);
}
}
}
