/**
* Index the given cell definitions by name. The name can
* be dynamic, in which case the name must be evaluated.
*
* @param array $cellDefinitions
*
* @return array
*/
private function indexCellDefinitions(array $cellDefinitions)
{
$indexedDefinitions = array();
foreach ($cellDefinitions as $cellDefinition) {
$cellName = $cellDefinition['name'];
$cellItems = array(null);
if (isset($cellDefinition['with_items'])) {
$cellItems = $cellDefinition['with_items'];
}
// we need to evaluate the name for each column
foreach ($cellItems as $cellItem) {
$evaledCellName = $this->tokenReplacer->replaceTokens($cellName, null, $cellItem);
$cellDefinition['_item'] = $cellItem;
$indexedDefinitions[$evaledCellName] = $cellDefinition;
}
}
return $indexedDefinitions;
}
/**
* Iterate over the definition and determine the number of columns and compiler
* passes.
*
* @param Definition
*/
private function processMetadata(Definition $definition, $sourceDom = null)
{
$columns = array();
$passes = array();
if ($sourceDom) {
$xpath = new \DOMXpath($sourceDom);
$this->xpathResolver->registerXPathFunctions($xpath);
}
foreach ($definition['rows'] as &$rowDefinition) {
foreach ($rowDefinition['cells'] as &$cellDefinition) {
$cellName = $cellDefinition['name'];
if (isset($cellDefinition['pass'])) {
$passes[] = $cellDefinition['pass'];
}
// if an expression is given to with_items then we need to query
// the source document to evaluate the item names.
if (isset($cellDefinition['with_items']['selector'])) {
if (null === $sourceDom) {
throw new \RuntimeException('You must pass the source document to the loader in order to use `with_items_expr`');
}
$itemsExpr = $cellDefinition['with_items'];
$selector = $this->xpathResolver->replaceFunctions($itemsExpr['selector']);
$nodes = $xpath->query($selector);
$items = array();
foreach ($nodes as $node) {
// todo: Support keys ?
$value = $xpath->evaluate($itemsExpr['value'], $node);
$items[] = $value;
}
$cellDefinition['with_items'] = $items;
}
$cellItems = array(null);
if (isset($cellDefinition['with_items'])) {
$cellItems = $cellDefinition['with_items'];
}
foreach ($cellItems as $cellItem) {
$evaledCellName = $this->tokenReplacer->replaceTokens($cellName, null, $cellItem);
$columns[$evaledCellName] = $evaledCellName;
}
}
}
sort($passes);
$definition->setMetadata(array_values($columns), $passes);
}
