/**
* Write a scalar value into the current stream.
*
* If the given value is a string, it will be output surrounded by double quotes (") characters.
*
* @param mixed $scalar A PHP scalar value or null.
* @throws InvalidArgumentException If $scalar is not a PHP scalar value nor null.
* @throws StreamAccessException If an error occurs while writing the scalar value.
*/
public function writeScalar($scalar)
{
if (Utils::isScalar($scalar) === false) {
$msg = "A '" . gettype($scalar) . "' value is not a PHP scalar value nor null.";
throw new InvalidArgumentException($msg);
}
try {
if (is_int($scalar) === true) {
$this->getStream()->write($scalar);
} else {
if (is_double($scalar) === true) {
if (strpos('' . $scalar, '.') === false) {
$scalar = $scalar . '.0';
}
$this->getStream()->write($scalar);
} else {
if (is_string($scalar) === true) {
$this->getStream()->write(PhpUtils::doubleQuotedPhpString($scalar));
} else {
if (is_bool($scalar) === true) {
$this->getStream()->write($scalar === true ? 'true' : 'false');
} else {
if (is_null($scalar) === true) {
$this->getStream()->write('null');
}
}
}
}
}
} catch (StreamException $e) {
$msg = "An error occured while writing the scalar value '{$scalar}'.";
throw new StreamAccessException($msg, $this, 0, $e);
}
}
protected function includeChoiceComponent(QtiComponent $component, DOMDocumentFragment $rendering)
{
$choiceIndex = $this->choiceCounter;
$choiceIdentifier = PhpUtils::doubleQuotedPhpString($component->getIdentifier());
$interactionIndex = $this->interactionCounter;
$stateName = $this->getStateName();
$includeStmtCmt = $rendering->ownerDocument->createComment(' qtism-include($' . "{$stateName}, {$interactionIndex}, {$choiceIdentifier}, {$choiceIndex}): ");
$endIncludeStmtCmt = $rendering->ownerDocument->createComment(' qtism-endinclude ');
$rendering->insertBefore($includeStmtCmt, $rendering->firstChild);
$rendering->appendChild($endIncludeStmtCmt);
}
/**
* @see \qtism\runtime\rendering\markup\xhtml\AbstractXhtmlRenderer::appendChildren()
*/
protected function appendChildren(DOMDocumentFragment $fragment, QtiComponent $component, $base = '')
{
$renderingEngine = $this->getRenderingEngine();
if ($renderingEngine !== null) {
switch ($renderingEngine->getPrintedVariablePolicy()) {
case AbstractMarkupRenderingEngine::CONTEXT_AWARE:
$value = Utils::printVariable($this->getRenderingEngine()->getState(), $component->getIdentifier(), $component->getFormat(), $component->mustPowerForm(), $component->getBase(), $component->getIndex(), $component->getDelimiter(), $component->getField(), $component->getMappingIndicator());
$fragment->firstChild->appendChild($fragment->ownerDocument->createTextNode($value));
break;
case AbstractMarkupRenderingEngine::TEMPLATE_ORIENTED:
$base = $component->getBase();
$index = $component->getIndex();
$params = array('$' . $renderingEngine->getStateName(), PhpUtils::doubleQuotedPhpString($component->getIdentifier()), PhpUtils::doubleQuotedPhpString($component->getFormat()), $component->mustPowerForm() === true ? 'true' : 'false', is_int($base) === true ? $base : PhpUtils::doubleQuotedPhpString($base), is_int($index) === true ? $index : PhpUtils::doubleQuotedPhpString($index), PhpUtils::doubleQuotedPhpString($component->getDelimiter()), PhpUtils::doubleQuotedPhpString($component->getField()), PhpUtils::doubleQuotedPhpString($component->getMappingIndicator()));
$value = " qtism-printVariable(" . implode(', ', $params) . ") ";
$fragment->firstChild->appendChild($fragment->ownerDocument->createComment($value));
break;
}
}
}
/**
* @dataProvider doubleQuotedPhpStringDataProvider
*/
public function testDoubleQuotedPhpString($input, $expected)
{
$this->assertEquals($expected, PhpUtils::doubleQuotedPhpString($input));
}
