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<?php |
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|
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class testDataFileIterator implements Iterator |
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{ |
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|
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protected $file; |
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protected $key = 0; |
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protected $current; |
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|
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public function __construct($file) |
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{ |
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$this->file = fopen($file, 'r'); |
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} |
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|
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public function __destruct() |
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{ |
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fclose($this->file); |
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} |
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|
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public function rewind() |
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{ |
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rewind($this->file); |
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$this->current = $this->_parseNextDataset(); |
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$this->key = 0; |
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} |
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|
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public function valid() |
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{ |
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return !feof($this->file); |
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} |
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|
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public function key() |
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{ |
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return $this->key; |
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} |
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|
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public function current() |
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{ |
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return $this->current; |
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} |
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|
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public function next() |
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{ |
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$this->current = $this->_parseNextDataset(); |
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$this->key++; |
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} |
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|
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private function _parseNextDataset() |
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{ |
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// Read a line of test data from the file |
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do { |
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// Only take lines that contain test data and that aren't commented out |
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$testDataRow = trim(fgets($this->file)); |
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} while (($testDataRow > '') && ($testDataRow{0} === '#')); |
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|
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// Discard any comments at the end of the line |
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list($testData) = explode('//',$testDataRow); |
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|
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// Split data into an array of individual values and a result |
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$dataSet = $this->_getcsv($testData, ',', "'"); |
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foreach($dataSet as &$dataValue) { |
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$dataValue = $this->_parseDataValue($dataValue); |
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} |
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unset($dataValue); |
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|
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return $dataSet; |
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} |
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|
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private function _getcsv($input, $delimiter, $enclosure) |
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{ |
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if (function_exists('str_getcsv')) { |
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return str_getcsv($input, $delimiter, $enclosure); |
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} |
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|
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$temp = fopen('php://memory', 'rw'); |
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fwrite($temp, $input); |
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rewind($temp); |
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$data = fgetcsv($temp, strlen($input), $delimiter, $enclosure); |
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fclose($temp); |
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|
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if ($data === false) { |
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$data = array(null); |
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} |
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|
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return $data; |
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} |
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|
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private function _parseDataValue($dataValue) { |
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// discard any white space |
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$dataValue = trim($dataValue); |
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// test for the required datatype and convert accordingly |
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if (!is_numeric($dataValue)) { |
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if($dataValue == '') { |
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$dataValue = NULL; |
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} elseif($dataValue == '""') { |
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$dataValue = ''; |
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} elseif(($dataValue[0] == '"') && ($dataValue[strlen($dataValue)-1] == '"')) { |
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$dataValue = substr($dataValue,1,-1); |
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} elseif(($dataValue[0] == '{') && ($dataValue[strlen($dataValue)-1] == '}')) { |
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$dataValue = explode(';',substr($dataValue,1,-1)); |
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foreach($dataValue as &$dataRow) { |
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if (strpos($dataRow,'|') !== FALSE) { |
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$dataRow = explode('|',$dataRow); |
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foreach($dataRow as &$dataCell) { |
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$dataCell = $this->_parseDataValue($dataCell); |
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} |
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unset($dataCell); |
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} else { |
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$dataRow = $this->_parseDataValue($dataRow); |
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} |
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} |
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unset($dataRow); |
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} else { |
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switch (strtoupper($dataValue)) { |
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case 'NULL' : $dataValue = NULL; break; |
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case 'TRUE' : $dataValue = TRUE; break; |
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case 'FALSE' : $dataValue = FALSE; break; |
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} |
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} |
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} else { |
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if (strpos($dataValue,'.') !== FALSE) { |
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$dataValue = (float) $dataValue; |
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} else { |
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$dataValue = (int) $dataValue; |
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} |
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} |
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|
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return $dataValue; |
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} |
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|
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} |
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|
