outString = '';
}
}
/**
* @return string The XML output string up until the point currenly written.
*/
public function getString()
{
return $this->outString;
}
/**
* Converts the given node into its XML representation and appends that to
* this writer's output string.
*
* The generated string contains the attributes defined via
* SVGNode::getSerializableAttributes() and the styles defined via
* SVGNode::getSerializableStyles().
* Container nodes () and self-closing tags () are
* distinguished correctly.
*
* @param SVGNode $node The node to write.
*
* @return void
*/
public function writeNode(SVGNode $node)
{
$this->outString .= '<'.$node->getName();
$this->appendAttributes($node->getSerializableAttributes());
$this->appendStyles($node->getSerializableStyles());
$textContent = htmlspecialchars($node->getValue());
if ($node instanceof SVGNodeContainer) {
$this->outString .= '>';
for ($i = 0, $n = $node->countChildren(); $i < $n; ++$i) {
$this->writeNode($node->getChild($i));
}
$this->outString .= $textContent.'getName().'>';
return;
}
if ($node instanceof SVGStyle) {
$this->outString .= '>';
$this->writeCdata($node->getCss());
$this->outString .= $textContent.'getName().'>';
return;
}
if (!empty($textContent)) {
$this->outString .= '>' . $textContent . 'getName().'>';
return;
}
$this->outString .= ' />';
}
/**
* Converts the given styles into a CSS string, then appends a 'style'
* attribute with the value set to that string to this writer's output.
*
* @param string[] $styles An associative array of styles for the attribute.
*
* @return void
*/
private function appendStyles(array $styles)
{
if (empty($styles)) {
return;
}
$string = '';
$prependSemicolon = false;
foreach ($styles as $key => $value) {
if ($prependSemicolon) {
$string .= '; ';
}
$prependSemicolon = true;
$string .= $key.': '.$value;
}
$this->appendAttribute('style', $string);
}
/**
* Appends all attributes defined in the given associative array to this
* writer's output.
*
* @param string[] $attrs An associative array of attribute strings.
*
* @return void
*/
private function appendAttributes(array $attrs)
{
foreach ($attrs as $key => $value) {
$this->appendAttribute($key, $value);
}
}
/**
* Appends a single attribute given by key and value to this writer's
* output.
*
* @param string $attrName The attribute name.
* @param string $attrValue The attribute value.
*
* @return void
*/
private function appendAttribute($attrName, $attrValue)
{
$xml1 = defined('ENT_XML1') ? ENT_XML1 : 16;
$attrName = htmlspecialchars($attrName, $xml1 | ENT_COMPAT);
$attrValue = htmlspecialchars($attrValue, $xml1 | ENT_COMPAT);
$this->outString .= ' '.$attrName.'="'.$attrValue.'"';
}
/**
* Appends CDATA content given the $cdata value to the writer's output.
*
* @param string $cdata The content.
*
* @return void
*/
private function writeCdata($cdata)
{
$xml1 = defined('ENT_XML1') ? ENT_XML1 : 16;
$cdata = htmlspecialchars($cdata, $xml1 | ENT_COMPAT);
$this->outString .= '';
}
}