lines = [];
$this->currentLine = 0;
$this->stack = new \SplStack();
}
public function render($baseTabLevel = 0)
{
return implode("\n", array_map(function ($line) use ($baseTabLevel) {
return str_repeat("\t", $baseTabLevel) . $line;
}, $this->lines));
}
public function section($num, $text, $anchorPrefix = null, $class = null, $label = null)
{
$anchor = $this->slug($anchorPrefix . '-' . $text);
$ariaLabel = empty($label) ? null : 'aria-label="Go to ' . $label . '"';
$link = ' ' . $this->glyph('link') . '';
$attrs = ['id' => $anchor];
if ($class) {
$attrs['class'] = $class;
}
$this->elem("h{$num}", $attrs, $text . $link);
return $this;
}
public function open($tag, $attr = null)
{
$startingLine = $this->currentLine;
$this->elem($tag, $attr);
$this->stack->push([$tag, $startingLine]);
return $this;
}
public function close($collapse = false)
{
list($tag, $startLine) = $this->stack->pop();
$this->lines[$this->currentLine++] = $this->getTab() . '';
if ($collapse) {
$this->lines[$startLine] = $this->lines[$startLine] . implode('', array_map('trim',
array_slice($this->lines, $startLine + 1, $this->currentLine - $startLine + 1)
));
$this->currentLine = $startLine + 1;
for ($i = $this->currentLine; isset($this->lines[$i]); $i++) {
unset($this->lines[$i]);
}
}
return $this;
}
public function elem($tag, $attr = null, $content = null)
{
$attr = $attr
? (is_string($attr) ? ['class' => $attr] : (array) $attr)
: [];
$buffer = $this->getTab() . '<' . $tag;
foreach ($attr as $k => $v) {
$buffer .= ' ' . $k . '="' . $v . '"';
}
$buffer .= '>';
if ($content !== null) {
$buffer .= $content . '';
}
$this->lines[$this->currentLine++] = $buffer;
return $this;
}
public function slug($text)
{
$sanitized = preg_replace('/[^A-Za-z0-9-]/', '', strip_tags($text));
return strtolower(str_replace(' ', '-', trim($sanitized, ' -')));
}
public function glyph($type)
{
return '';
}
public function append(HtmlDocument $html)
{
$this->lines = array_merge($this->lines, $html->lines);
$this->currentLine += count($html->lines);
return $this;
}
private function getTab()
{
return str_repeat("\t", count($this->stack));
}
}