/**
* @param StreamInterface $stream
* @param MailchimpExport_DataCallbackInterface $dataCallable
* @throws MailchimpExport_Exception
*/
protected function readFromStream(StreamInterface $stream, MailchimpExport_DataCallbackInterface $dataCallable)
{
$headings = null;
$first = true;
$hasHeadingRow = $dataCallable->hasHeadingRow();
// Read until the stream is closed
while (!$stream->feof()) {
// Read a line from the stream
$currentRow = trim($stream->readLine());
if (strlen($currentRow) == 0) {
continue;
}
$currentDataSet = json_decode($currentRow, true);
if (!$currentDataSet) {
throw new \MailchimpExport_Exception('invalid response: ' . $currentRow);
}
$currentRow = null;
// check for errors
if (isset($currentDataSet['error']) && isset($currentDataSet['code'])) {
throw new \MailchimpExport_Exception($currentDataSet['error'], $currentDataSet['code']);
}
if ($first && $hasHeadingRow) {
$headings = $currentDataSet;
$first = false;
continue;
}
// if we have headings => combine them with the dataset
if ($headings !== null) {
// Sometimes mailchimps gives an smaller array of data because of missing data.
// This will cause an error in array_column
while (count($headings) > count($currentDataSet)) {
$currentDataSet[] = null;
}
$returnValue = array_combine($headings, $currentDataSet);
} else {
$returnValue = $currentDataSet;
}
$dataCallable->addDataSet($returnValue);
$returnValue = null;
$currentDataSet = null;
}
}
