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<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Predis\Command;
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/**
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* @link http://redis.io/commands/zrange
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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class ZSetRange extends PrefixableCommand
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{
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/**
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* {@inheritdoc}
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*/
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public function getId()
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{
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return 'ZRANGE';
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}
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/**
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* {@inheritdoc}
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*/
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protected function filterArguments(Array $arguments)
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{
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if (count($arguments) === 4) {
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$lastType = gettype($arguments[3]);
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if ($lastType === 'string' && strtoupper($arguments[3]) === 'WITHSCORES') {
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// Used for compatibility with older versions
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$arguments[3] = array('WITHSCORES' => true);
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$lastType = 'array';
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}
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if ($lastType === 'array') {
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$options = $this->prepareOptions(array_pop($arguments));
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return array_merge($arguments, $options);
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}
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}
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return $arguments;
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}
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/**
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* Returns a list of options and modifiers compatible with Redis.
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*
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* @param array $options List of options.
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* @return array
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*/
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protected function prepareOptions($options)
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{
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$opts = array_change_key_case($options, CASE_UPPER);
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$finalizedOpts = array();
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if (!empty($opts['WITHSCORES'])) {
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$finalizedOpts[] = 'WITHSCORES';
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}
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return $finalizedOpts;
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}
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/**
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* Checks for the presence of the WITHSCORES modifier.
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*
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* @return bool
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*/
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protected function withScores()
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{
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$arguments = $this->getArguments();
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if (count($arguments) < 4) {
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return false;
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}
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return strtoupper($arguments[3]) === 'WITHSCORES';
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}
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/**
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* {@inheritdoc}
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*/
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public function parseResponse($data)
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{
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if ($this->withScores()) {
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$result = array();
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for ($i = 0; $i < count($data); $i++) {
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$result[] = array($data[$i], $data[++$i]);
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}
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return $result;
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}
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return $data;
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}
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}
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