/**
* Convert a preg-style replacement to a template
*
* @param string $template Original template
* @param integer $passthrough Index of the passthrough capture
* @return string Modified template
*/
protected function convertTemplate($template, $passthrough)
{
// Replace numeric references in the template with the value of the corresponding attribute
// values or passthrough
$template = TemplateHelper::replaceTokens($template, $this->referencesRegexp, function ($m, $node) use($passthrough) {
$key = (int) trim($m[0], '\\${}');
if ($key === 0) {
// $0 copies the whole textContent
return ['expression', '.'];
}
if ($key === $passthrough && $node instanceof DOMText) {
// Passthrough capture, does not include start/end tags
return ['passthrough'];
}
if (isset($this->captures[$key]['name'])) {
// Normal capture, replaced by the equivalent expression
return ['expression', '@' . $this->captures[$key]['name']];
}
// Non-existent captures are simply ignored, similarly to preg_replace()
return ['literal', ''];
});
// Unescape backslashes and special characters in the template
$template = TemplateHelper::replaceTokens($template, '(\\\\+[0-9${\\\\])', function ($m) {
return ['literal', stripslashes($m[0])];
});
return $template;
}
protected function convertTemplate($template, $passthrough)
{
$_this = $this;
$template = TemplateHelper::replaceTokens($template, $this->referencesRegexp, function ($m, $node) use($passthrough, $_this) {
$key = (int) \trim($m[0], '\\${}');
if ($key === 0) {
return array('expression', '.');
}
if ($key === $passthrough && $node instanceof DOMText) {
return array('passthrough');
}
if (isset($_this->captures[$key]['name'])) {
return array('expression', '@' . $_this->captures[$key]['name']);
}
return array('literal', '');
});
$template = TemplateHelper::replaceTokens($template, '(\\\\+[0-9${\\\\])', function ($m) {
return array('literal', \stripslashes($m[0]));
});
return $template;
}
/**
* @testdox replaceTokens() tests
* @dataProvider replaceTokensTests
*/
public function testReplaceTokens($template, $regexp, $fn, $expected)
{
if ($expected instanceof Exception) {
$this->setExpectedException(get_class($expected), $expected->getMessage());
}
$this->assertSame($expected, TemplateHelper::replaceTokens($template, $regexp, $fn, $expected));
}
/**
* Replace parts of this template that match given regexp
*
* @param string $regexp Regexp for matching parts that need replacement
* @param callback $fn Callback used to get the replacement
* @return void
*/
public function replaceTokens($regexp, $fn)
{
$this->forensics = null;
$this->template = TemplateHelper::replaceTokens($this->template, $regexp, $fn);
$this->isNormalized = false;
}
