132 lines
3.8 KiB
PHP
132 lines
3.8 KiB
PHP
<?php
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class testDataFileIterator implements Iterator
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{
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protected $file;
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protected $key = 0;
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protected $current;
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public function __construct($file)
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{
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$this->file = fopen($file, 'r');
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}
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public function __destruct()
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{
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fclose($this->file);
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}
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public function rewind()
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{
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rewind($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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public function valid()
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{
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return !feof($this->file);
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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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public function current()
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{
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return $this->current;
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}
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public function next()
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{
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$this->current = $this->_parseNextDataset();
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$this->key++;
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}
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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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// Discard any comments at the end of the line
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list($testData) = explode('//',$testDataRow);
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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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return $dataSet;
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}
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private function _getcsv($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, $enclosure);
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}
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$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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if ($data === false) {
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$data = array(null);
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}
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return $data;
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}
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private function _parseDataValue($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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return $dataValue;
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}
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}
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