Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
110 lines (96 sloc) 2.65 KB
<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\pgsql;
/**
* The class converts PostgreSQL array representation to PHP array
*
* @author Sergei Tigrov <rrr-r@ya.ru>
* @author Dmytro Naumenko <d.naumenko.a@gmail.com>
* @since 2.0.14
*/
class ArrayParser
{
/**
* @var string Character used in array
*/
private $delimiter = ',';
/**
* Convert array from PostgreSQL to PHP
*
* @param string $value string to be converted
* @return array|null
*/
public function parse($value)
{
if ($value === null) {
return null;
}
if ($value === '{}') {
return [];
}
return $this->parseArray($value);
}
/**
* Pares PgSQL array encoded in string
*
* @param string $value
* @param int $i parse starting position
* @return array
*/
private function parseArray($value, &$i = 0)
{
$result = [];
$len = strlen($value);
for (++$i; $i < $len; ++$i) {
switch ($value[$i]) {
case '{':
$result[] = $this->parseArray($value, $i);
break;
case '}':
break 2;
case $this->delimiter:
if (empty($result)) { // `{}` case
$result[] = null;
}
if (in_array($value[$i + 1], [$this->delimiter, '}'], true)) { // `{,}` case
$result[] = null;
}
break;
default:
$result[] = $this->parseString($value, $i);
}
}
return $result;
}
/**
* Parses PgSQL encoded string
*
* @param string $value
* @param int $i parse starting position
* @return null|string
*/
private function parseString($value, &$i)
{
$isQuoted = $value[$i] === '"';
$stringEndChars = $isQuoted ? ['"'] : [$this->delimiter, '}'];
$result = '';
$len = strlen($value);
for ($i += $isQuoted ? 1 : 0; $i < $len; ++$i) {
if (in_array($value[$i], ['\\', '"'], true) && in_array($value[$i + 1], [$value[$i], '"'], true)) {
++$i;
} elseif (in_array($value[$i], $stringEndChars, true)) {
break;
}
$result .= $value[$i];
}
$i -= $isQuoted ? 0 : 1;
if (!$isQuoted && $result === 'NULL') {
$result = null;
}
return $result;
}
}
You can’t perform that action at this time.