protected function parseNextRecord(AbstractDataProvider $dataProvider, array $dataSubmitters = NULL, $attempt = 0) {
$line = $dataProvider->readLine();
if ($line === FALSE) {
return NULL;
}
$record = NULL;
$delimiterSize = strlen($this->delimiter);
// the following flag is used to support lines where first column value is empty string
$isDelimiterExpected = FALSE;
// preparing line properties
$index = 0;
$lineLength = strlen($line);
// parsing the line
while ($index < $lineLength) {
// to resolve the following issues: <, "...." ,>
if ($line{$index} == ' ') {
$index++;
continue;
}
if ($isDelimiterExpected) {
if (substr($line, $index, $delimiterSize) == $this->delimiter) {
$index += $delimiterSize;
}
else {
// reached end of line
}
}
if (($index < $lineLength) && ($line{$index} == '"')) {
$originalLineNumber = NULL;
$originalLinePosition = $index + 1;
$value = '';
$index++;
while (TRUE) {
do {
$i = strpos($line, '"', $index);
if ($i === FALSE) {
if (!isset($originalLineNumber)) {
$originalLineNumber = $dataProvider->getCurrentLineNumber();
}
// it is possible that the record spreads across several lines
$s = $dataProvider->readLine();
if ($s === FALSE) {
LogHelper::log_debug($record);
$e = new DataParserException(t(
'Inconsistent file structure. Could not find second " in row column value [line: %lineNumber; position: %linePosition]',
array('%lineNumber' => $originalLineNumber, '%linePosition' => $originalLinePosition)));
throw $e;
}
$line .= ' ' . $s;
$lineLength += strlen($s) + 1; // + 1 is for space
}
}
while ($i === FALSE);
if (($attempt == self::$PARSING_METHOD__SUPPORT_BACKSLASH) && ($line{$i - 1} == '\\')) {
// support for nested " which is marked as '\"'
$value .= substr($line, $index, $i - $index - 1) . '"';
$index = $i + 1;
}
elseif ((($i + 1) < $lineLength) && ($line{$i + 1} == '"')) {
// support for nested " which is marked as '""'
$value .= substr($line, $index, $i - $index + 1);
$index = $i + 2;
}
else {
$value .= substr($line, $index, $i - $index);
$index = $i + 1;
break;
}
}
}
else {
$indexEnd = strpos($line, $this->delimiter, $index);
if ($indexEnd === FALSE) {
$indexEnd = $lineLength;
}
$value = ($index < $indexEnd) ? substr($line, $index, $indexEnd - $index) : '';
$index = $indexEnd;
}
// post-converting value
$value = trim($value);
$record[] = $value;
$isDelimiterExpected = TRUE;
}
// when empty line is passed to this method it means we have one column with empty value
if (!isset($record)) {
$record[] = '';
}
$this->executeAfterLineParsed($dataSubmitters, $record);
return $record;
}
