predis/lib/Predis_Compatibility.php

<?php
namespace Predis;

RedisServerProfile::registerProfile('\Predis\RedisServer_v1_0', '1.0');
RedisServerProfile::registerProfile('\Predis\RedisServer_v1_2_LongNames', '1.2');
RedisServerProfile::registerProfile('\Predis\RedisServer_v2_0_LongNames', '2.0');

class RedisServer_v1_0 extends \Predis\RedisServerProfile {
    public function getVersion() { return '1.0'; }
    public function getSupportedCommands() {
        return array(
            /* miscellaneous commands */
            'ping'      => '\Predis\Compatibility\v1_0\Commands\Ping',
            'echo'      => '\Predis\Compatibility\v1_0\Commands\DoEcho',
            'auth'      => '\Predis\Compatibility\v1_0\Commands\Auth',

            /* connection handling */
            'quit'      => '\Predis\Compatibility\v1_0\Commands\Quit',

            /* commands operating on string values */
            'set'                     => '\Predis\Compatibility\v1_0\Commands\Set',
            'setnx'                   => '\Predis\Compatibility\v1_0\Commands\SetPreserve',
                'setPreserve'         => '\Predis\Compatibility\v1_0\Commands\SetPreserve',
            'get'                     => '\Predis\Compatibility\v1_0\Commands\Get',
            'mget'                    => '\Predis\Compatibility\v1_0\Commands\GetMultiple',
                'getMultiple'         => '\Predis\Compatibility\v1_0\Commands\GetMultiple',
            'getset'                  => '\Predis\Compatibility\v1_0\Commands\GetSet',
                'getSet'              => '\Predis\Compatibility\v1_0\Commands\GetSet',
            'incr'                    => '\Predis\Compatibility\v1_0\Commands\Increment',
                'increment'           => '\Predis\Compatibility\v1_0\Commands\Increment',
            'incrby'                  => '\Predis\Compatibility\v1_0\Commands\IncrementBy',
                'incrementBy'         => '\Predis\Compatibility\v1_0\Commands\IncrementBy',
            'decr'                    => '\Predis\Compatibility\v1_0\Commands\Decrement',
                'decrement'           => '\Predis\Compatibility\v1_0\Commands\Decrement',
            'decrby'                  => '\Predis\Compatibility\v1_0\Commands\DecrementBy',
                'decrementBy'         => '\Predis\Compatibility\v1_0\Commands\DecrementBy',
            'exists'                  => '\Predis\Compatibility\v1_0\Commands\Exists',
            'del'                     => '\Predis\Compatibility\v1_0\Commands\Delete',
                'delete'              => '\Predis\Compatibility\v1_0\Commands\Delete',
            'type'                    => '\Predis\Compatibility\v1_0\Commands\Type',

            /* commands operating on the key space */
            'keys'               => '\Predis\Compatibility\v1_0\Commands\Keys',
            'randomkey'          => '\Predis\Compatibility\v1_0\Commands\RandomKey',
                'randomKey'      => '\Predis\Compatibility\v1_0\Commands\RandomKey',
            'rename'             => '\Predis\Compatibility\v1_0\Commands\Rename',
            'renamenx'           => '\Predis\Compatibility\v1_0\Commands\RenamePreserve',
                'renamePreserve' => '\Predis\Compatibility\v1_0\Commands\RenamePreserve',
            'expire'             => '\Predis\Compatibility\v1_0\Commands\Expire',
            'expireat'           => '\Predis\Compatibility\v1_0\Commands\ExpireAt',
                'expireAt'       => '\Predis\Compatibility\v1_0\Commands\ExpireAt',
            'dbsize'             => '\Predis\Compatibility\v1_0\Commands\DatabaseSize',
                'databaseSize'   => '\Predis\Compatibility\v1_0\Commands\DatabaseSize',
            'ttl'                => '\Predis\Compatibility\v1_0\Commands\TimeToLive',
                'timeToLive'     => '\Predis\Compatibility\v1_0\Commands\TimeToLive',

            /* commands operating on lists */
            'rpush'            => '\Predis\Compatibility\v1_0\Commands\ListPushTail',
                'pushTail'     => '\Predis\Compatibility\v1_0\Commands\ListPushTail',
            'lpush'            => '\Predis\Compatibility\v1_0\Commands\ListPushHead',
                'pushHead'     => '\Predis\Compatibility\v1_0\Commands\ListPushHead',
            'llen'             => '\Predis\Compatibility\v1_0\Commands\ListLength',
                'listLength'   => '\Predis\Compatibility\v1_0\Commands\ListLength',
            'lrange'           => '\Predis\Compatibility\v1_0\Commands\ListRange',
                'listRange'    => '\Predis\Compatibility\v1_0\Commands\ListRange',
            'ltrim'            => '\Predis\Compatibility\v1_0\Commands\ListTrim',
                'listTrim'     => '\Predis\Compatibility\v1_0\Commands\ListTrim',
            'lindex'           => '\Predis\Compatibility\v1_0\Commands\ListIndex',
                'listIndex'    => '\Predis\Compatibility\v1_0\Commands\ListIndex',
            'lset'             => '\Predis\Compatibility\v1_0\Commands\ListSet',
                'listSet'      => '\Predis\Compatibility\v1_0\Commands\ListSet',
            'lrem'             => '\Predis\Compatibility\v1_0\Commands\ListRemove',
                'listRemove'   => '\Predis\Compatibility\v1_0\Commands\ListRemove',
            'lpop'             => '\Predis\Compatibility\v1_0\Commands\ListPopFirst',
                'popFirst'     => '\Predis\Compatibility\v1_0\Commands\ListPopFirst',
            'rpop'             => '\Predis\Compatibility\v1_0\Commands\ListPopLast',
                'popLast'      => '\Predis\Compatibility\v1_0\Commands\ListPopLast',

            /* commands operating on sets */
            'sadd'                      => '\Predis\Compatibility\v1_0\Commands\SetAdd',
                'setAdd'                => '\Predis\Compatibility\v1_0\Commands\SetAdd',
            'srem'                      => '\Predis\Compatibility\v1_0\Commands\SetRemove',
                'setRemove'             => '\Predis\Compatibility\v1_0\Commands\SetRemove',
            'spop'                      => '\Predis\Compatibility\v1_0\Commands\SetPop',
                'setPop'                => '\Predis\Compatibility\v1_0\Commands\SetPop',
            'smove'                     => '\Predis\Compatibility\v1_0\Commands\SetMove',
                'setMove'               => '\Predis\Compatibility\v1_0\Commands\SetMove',
            'scard'                     => '\Predis\Compatibility\v1_0\Commands\SetCardinality',
                'setCardinality'        => '\Predis\Compatibility\v1_0\Commands\SetCardinality',
            'sismember'                 => '\Predis\Compatibility\v1_0\Commands\SetIsMember',
                'setIsMember'           => '\Predis\Compatibility\v1_0\Commands\SetIsMember',
            'sinter'                    => '\Predis\Compatibility\v1_0\Commands\SetIntersection',
                'setIntersection'       => '\Predis\Compatibility\v1_0\Commands\SetIntersection',
            'sinterstore'               => '\Predis\Compatibility\v1_0\Commands\SetIntersectionStore',
                'setIntersectionStore'  => '\Predis\Compatibility\v1_0\Commands\SetIntersectionStore',
            'sunion'                    => '\Predis\Compatibility\v1_0\Commands\SetUnion',
                'setUnion'              => '\Predis\Compatibility\v1_0\Commands\SetUnion',
            'sunionstore'               => '\Predis\Compatibility\v1_0\Commands\SetUnionStore',
                'setUnionStore'         => '\Predis\Compatibility\v1_0\Commands\SetUnionStore',
            'sdiff'                     => '\Predis\Compatibility\v1_0\Commands\SetDifference',
                'setDifference'         => '\Predis\Compatibility\v1_0\Commands\SetDifference',
            'sdiffstore'                => '\Predis\Compatibility\v1_0\Commands\SetDifferenceStore',
                'setDifferenceStore'    => '\Predis\Compatibility\v1_0\Commands\SetDifferenceStore',
            'smembers'                  => '\Predis\Compatibility\v1_0\Commands\SetMembers',
                'setMembers'            => '\Predis\Compatibility\v1_0\Commands\SetMembers',
            'srandmember'               => '\Predis\Compatibility\v1_0\Commands\SetRandomMember',
                'setRandomMember'       => '\Predis\Compatibility\v1_0\Commands\SetRandomMember',

            /* multiple databases handling commands */
            'select'                => '\Predis\Compatibility\v1_0\Commands\SelectDatabase',
                'selectDatabase'    => '\Predis\Compatibility\v1_0\Commands\SelectDatabase',
            'move'                  => '\Predis\Compatibility\v1_0\Commands\MoveKey',
                'moveKey'           => '\Predis\Compatibility\v1_0\Commands\MoveKey',
            'flushdb'               => '\Predis\Compatibility\v1_0\Commands\FlushDatabase',
                'flushDatabase'     => '\Predis\Compatibility\v1_0\Commands\FlushDatabase',
            'flushall'              => '\Predis\Compatibility\v1_0\Commands\FlushAll',
                'flushDatabases'    => '\Predis\Compatibility\v1_0\Commands\FlushAll',

            /* sorting */
            'sort'                  => '\Predis\Compatibility\v1_0\Commands\Sort',

            /* remote server control commands */
            'info'                  => '\Predis\Compatibility\v1_0\Commands\Info',
            'slaveof'               => '\Predis\Compatibility\v1_0\Commands\SlaveOf',
                'slaveOf'           => '\Predis\Compatibility\v1_0\Commands\SlaveOf',

            /* persistence control commands */
            'save'                  => '\Predis\Compatibility\v1_0\Commands\Save',
            'bgsave'                => '\Predis\Compatibility\v1_0\Commands\BackgroundSave',
                'backgroundSave'    => '\Predis\Compatibility\v1_0\Commands\BackgroundSave',
            'lastsave'              => '\Predis\Compatibility\v1_0\Commands\LastSave',
                'lastSave'          => '\Predis\Compatibility\v1_0\Commands\LastSave',
            'shutdown'              => '\Predis\Compatibility\v1_0\Commands\Shutdown',
        );
    }
}

class RedisServer_v1_2_LongNames extends \Predis\RedisServerProfile {
    public function getVersion() { return '1.2'; }
    public function getSupportedCommands() {
        return array(
            /* miscellaneous commands */
            'ping'      => '\Predis\Commands\Ping',
            'echo'      => '\Predis\Commands\DoEcho',
            'auth'      => '\Predis\Commands\Auth',

            /* connection handling */
            'quit'      => '\Predis\Commands\Quit',

            /* commands operating on string values */
            'set'                     => '\Predis\Commands\Set',
            'setnx'                   => '\Predis\Commands\SetPreserve',
                'setPreserve'         => '\Predis\Commands\SetPreserve',
            'mset'                    => '\Predis\Commands\SetMultiple',
                'setMultiple'         => '\Predis\Commands\SetMultiple',
            'msetnx'                  => '\Predis\Commands\SetMultiplePreserve',
                'setMultiplePreserve' => '\Predis\Commands\SetMultiplePreserve',
            'get'                     => '\Predis\Commands\Get',
            'mget'                    => '\Predis\Commands\GetMultiple',
                'getMultiple'         => '\Predis\Commands\GetMultiple',
            'getset'                  => '\Predis\Commands\GetSet',
                'getSet'              => '\Predis\Commands\GetSet',
            'incr'                    => '\Predis\Commands\Increment',
                'increment'           => '\Predis\Commands\Increment',
            'incrby'                  => '\Predis\Commands\IncrementBy',
                'incrementBy'         => '\Predis\Commands\IncrementBy',
            'decr'                    => '\Predis\Commands\Decrement',
                'decrement'           => '\Predis\Commands\Decrement',
            'decrby'                  => '\Predis\Commands\DecrementBy',
                'decrementBy'         => '\Predis\Commands\DecrementBy',
            'exists'                  => '\Predis\Commands\Exists',
            'del'                     => '\Predis\Commands\Delete',
                'delete'              => '\Predis\Commands\Delete',
            'type'                    => '\Predis\Commands\Type',

            /* commands operating on the key space */
            'keys'               => '\Predis\Commands\Keys_v1_2',
            'randomkey'          => '\Predis\Commands\RandomKey',
                'randomKey'      => '\Predis\Commands\RandomKey',
            'rename'             => '\Predis\Commands\Rename',
            'renamenx'           => '\Predis\Commands\RenamePreserve',
                'renamePreserve' => '\Predis\Commands\RenamePreserve',
            'expire'             => '\Predis\Commands\Expire',
            'expireat'           => '\Predis\Commands\ExpireAt',
                'expireAt'       => '\Predis\Commands\ExpireAt',
            'dbsize'             => '\Predis\Commands\DatabaseSize',
                'databaseSize'   => '\Predis\Commands\DatabaseSize',
            'ttl'                => '\Predis\Commands\TimeToLive',
                'timeToLive'     => '\Predis\Commands\TimeToLive',

            /* commands operating on lists */
            'rpush'            => '\Predis\Commands\ListPushTail',
                'pushTail'     => '\Predis\Commands\ListPushTail',
            'lpush'            => '\Predis\Commands\ListPushHead',
                'pushHead'     => '\Predis\Commands\ListPushHead',
            'llen'             => '\Predis\Commands\ListLength',
                'listLength'   => '\Predis\Commands\ListLength',
            'lrange'           => '\Predis\Commands\ListRange',
                'listRange'    => '\Predis\Commands\ListRange',
            'ltrim'            => '\Predis\Commands\ListTrim',
                'listTrim'     => '\Predis\Commands\ListTrim',
            'lindex'           => '\Predis\Commands\ListIndex',
                'listIndex'    => '\Predis\Commands\ListIndex',
            'lset'             => '\Predis\Commands\ListSet',
                'listSet'      => '\Predis\Commands\ListSet',
            'lrem'             => '\Predis\Commands\ListRemove',
                'listRemove'   => '\Predis\Commands\ListRemove',
            'lpop'             => '\Predis\Commands\ListPopFirst',
                'popFirst'     => '\Predis\Commands\ListPopFirst',
            'rpop'             => '\Predis\Commands\ListPopLast',
                'popLast'      => '\Predis\Commands\ListPopLast',
            'rpoplpush'        => '\Predis\Commands\ListPopLastPushHead',
                'listPopLastPushHead'  => '\Predis\Commands\ListPopLastPushHead',

            /* commands operating on sets */
            'sadd'                      => '\Predis\Commands\SetAdd',
                'setAdd'                => '\Predis\Commands\SetAdd',
            'srem'                      => '\Predis\Commands\SetRemove',
                'setRemove'             => '\Predis\Commands\SetRemove',
            'spop'                      => '\Predis\Commands\SetPop',
                'setPop'                => '\Predis\Commands\SetPop',
            'smove'                     => '\Predis\Commands\SetMove',
                'setMove'               => '\Predis\Commands\SetMove',
            'scard'                     => '\Predis\Commands\SetCardinality',
                'setCardinality'        => '\Predis\Commands\SetCardinality',
            'sismember'                 => '\Predis\Commands\SetIsMember',
                'setIsMember'           => '\Predis\Commands\SetIsMember',
            'sinter'                    => '\Predis\Commands\SetIntersection',
                'setIntersection'       => '\Predis\Commands\SetIntersection',
            'sinterstore'               => '\Predis\Commands\SetIntersectionStore',
                'setIntersectionStore'  => '\Predis\Commands\SetIntersectionStore',
            'sunion'                    => '\Predis\Commands\SetUnion',
                'setUnion'              => '\Predis\Commands\SetUnion',
            'sunionstore'               => '\Predis\Commands\SetUnionStore',
                'setUnionStore'         => '\Predis\Commands\SetUnionStore',
            'sdiff'                     => '\Predis\Commands\SetDifference',
                'setDifference'         => '\Predis\Commands\SetDifference',
            'sdiffstore'                => '\Predis\Commands\SetDifferenceStore',
                'setDifferenceStore'    => '\Predis\Commands\SetDifferenceStore',
            'smembers'                  => '\Predis\Commands\SetMembers',
                'setMembers'            => '\Predis\Commands\SetMembers',
            'srandmember'               => '\Predis\Commands\SetRandomMember',
                'setRandomMember'       => '\Predis\Commands\SetRandomMember',

            /* commands operating on sorted sets */
            'zadd'                          => '\Predis\Commands\ZSetAdd',
                'zsetAdd'                   => '\Predis\Commands\ZSetAdd',
            'zincrby'                       => '\Predis\Commands\ZSetIncrementBy',
                'zsetIncrementBy'           => '\Predis\Commands\ZSetIncrementBy',
            'zrem'                          => '\Predis\Commands\ZSetRemove',
                'zsetRemove'                => '\Predis\Commands\ZSetRemove',
            'zrange'                        => '\Predis\Commands\ZSetRange',
                'zsetRange'                 => '\Predis\Commands\ZSetRange',
            'zrevrange'                     => '\Predis\Commands\ZSetReverseRange',
                'zsetReverseRange'          => '\Predis\Commands\ZSetReverseRange',
            'zrangebyscore'                 => '\Predis\Commands\ZSetRangeByScore',
                'zsetRangeByScore'          => '\Predis\Commands\ZSetRangeByScore',
            'zcard'                         => '\Predis\Commands\ZSetCardinality',
                'zsetCardinality'           => '\Predis\Commands\ZSetCardinality',
            'zscore'                        => '\Predis\Commands\ZSetScore',
                'zsetScore'                 => '\Predis\Commands\ZSetScore',
            'zremrangebyscore'              => '\Predis\Commands\ZSetRemoveRangeByScore',
                'zsetRemoveRangeByScore'    => '\Predis\Commands\ZSetRemoveRangeByScore',

            /* multiple databases handling commands */
            'select'                => '\Predis\Commands\SelectDatabase',
                'selectDatabase'    => '\Predis\Commands\SelectDatabase',
            'move'                  => '\Predis\Commands\MoveKey',
                'moveKey'           => '\Predis\Commands\MoveKey',
            'flushdb'               => '\Predis\Commands\FlushDatabase',
                'flushDatabase'     => '\Predis\Commands\FlushDatabase',
            'flushall'              => '\Predis\Commands\FlushAll',
                'flushDatabases'    => '\Predis\Commands\FlushAll',

            /* sorting */
            'sort'                  => '\Predis\Commands\Sort',

            /* remote server control commands */
            'info'                  => '\Predis\Commands\Info',
            'slaveof'               => '\Predis\Commands\SlaveOf',
                'slaveOf'           => '\Predis\Commands\SlaveOf',

            /* persistence control commands */
            'save'                  => '\Predis\Commands\Save',
            'bgsave'                => '\Predis\Commands\BackgroundSave',
                'backgroundSave'    => '\Predis\Commands\BackgroundSave',
            'lastsave'              => '\Predis\Commands\LastSave',
                'lastSave'          => '\Predis\Commands\LastSave',
            'shutdown'              => '\Predis\Commands\Shutdown',
            'bgrewriteaof'                      =>  '\Predis\Commands\BackgroundRewriteAppendOnlyFile',
            'backgroundRewriteAppendOnlyFile'   =>  '\Predis\Commands\BackgroundRewriteAppendOnlyFile',
        );
    }
}

class RedisServer_v2_0_LongNames extends RedisServer_v1_2_LongNames {
    public function getVersion() { return '2.0'; }
    public function getSupportedCommands() {
        return array_merge(parent::getSupportedCommands(), array(
            /* transactions */
            'multi'                     => '\Predis\Commands\Multi',
            'exec'                      => '\Predis\Commands\Exec',
            'discard'                   => '\Predis\Commands\Discard',

            /* commands operating on string values */
            'setex'                     => '\Predis\Commands\SetExpire',
                'setExpire'             => '\Predis\Commands\SetExpire',
            'append'                    => '\Predis\Commands\Append',
            'substr'                    => '\Predis\Commands\Substr',

            /* commands operating on the key space */
            'keys'                      => '\Predis\Commands\Keys',

            /* commands operating on lists */
            'blpop'                     => '\Predis\Commands\ListPopFirstBlocking',
                'popFirstBlocking'      => '\Predis\Commands\ListPopFirstBlocking',
            'brpop'                     => '\Predis\Commands\ListPopLastBlocking',
                'popLastBlocking'       => '\Predis\Commands\ListPopLastBlocking',

            /* commands operating on sorted sets */
            'zunionstore'               => '\Predis\Commands\ZSetUnionStore',
                'zsetUnionStore'        => '\Predis\Commands\ZSetUnionStore',
            'zinterstore'               => '\Predis\Commands\ZSetIntersectionStore',
                'zsetIntersectionStore' => '\Predis\Commands\ZSetIntersectionStore',
            'zcount'                    => '\Predis\Commands\ZSetCount',
                'zsetCount'             => '\Predis\Commands\ZSetCount',
            'zrank'                     => '\Predis\Commands\ZSetRank',
                'zsetRank'              => '\Predis\Commands\ZSetRank',
            'zrevrank'                  => '\Predis\Commands\ZSetReverseRank',
                'zsetReverseRank'       => '\Predis\Commands\ZSetReverseRank',
            'zremrangebyrank'           => '\Predis\Commands\ZSetRemoveRangeByRank',
                'zsetRemoveRangeByRank' => '\Predis\Commands\ZSetRemoveRangeByRank',

            /* commands operating on hashes */
            'hset'                      => '\Predis\Commands\HashSet',
                'hashSet'               => '\Predis\Commands\HashSet',
            'hsetnx'                    => '\Predis\Commands\HashSetPreserve',
                'hashSetPreserve'       => '\Predis\Commands\HashSetPreserve',
            'hmset'                     => '\Predis\Commands\HashSetMultiple',
                'hashSetMultiple'       => '\Predis\Commands\HashSetMultiple',
            'hincrby'                   => '\Predis\Commands\HashIncrementBy',
                'hashIncrementBy'       => '\Predis\Commands\HashIncrementBy',
            'hget'                      => '\Predis\Commands\HashGet',
                'hashGet'               => '\Predis\Commands\HashGet',
            'hmget'                     => '\Predis\Commands\HashGetMultiple',
                'hashGetMultiple'       => '\Predis\Commands\HashGetMultiple',
            'hdel'                      => '\Predis\Commands\HashDelete',
                'hashDelete'            => '\Predis\Commands\HashDelete',
            'hexists'                   => '\Predis\Commands\HashExists',
                'hashExists'            => '\Predis\Commands\HashExists',
            'hlen'                      => '\Predis\Commands\HashLength',
                'hashLength'            => '\Predis\Commands\HashLength',
            'hkeys'                     => '\Predis\Commands\HashKeys',
                'hashKeys'              => '\Predis\Commands\HashKeys',
            'hvals'                     => '\Predis\Commands\HashValues',
                'hashValues'            => '\Predis\Commands\HashValues',
            'hgetall'                   => '\Predis\Commands\HashGetAll',
                'hashGetAll'            => '\Predis\Commands\HashGetAll',

            /* publish - subscribe */
            'subscribe'                 => '\Predis\Commands\Subscribe',
            'unsubscribe'               => '\Predis\Commands\Unsubscribe',
            'psubscribe'                => '\Predis\Commands\SubscribeByPattern',
            'punsubscribe'              => '\Predis\Commands\UnsubscribeByPattern',
            'publish'                   => '\Predis\Commands\Publish',

            /* remote server control commands */
            'config'                    => '\Predis\Commands\Config',
                'configuration'         => '\Predis\Commands\Config',
        ));
    }
}

/* ------------------------------------------------------------------------- */

namespace Predis\Compatibility\v1_0\Commands;

/* miscellaneous commands */
class Ping extends  \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'PING'; }
    public function parseResponse($data) {
        return $data === 'PONG' ? true : false;
    }
}

class DoEcho extends \Predis\BulkCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'ECHO'; }
}

class Auth extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'AUTH'; }
}

/* connection handling */
class Quit extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'QUIT'; }
    public function closesConnection() { return true; }
}

/* commands operating on string values */
class Set extends \Predis\BulkCommand {
    public function getCommandId() { return 'SET'; }
}

class SetPreserve extends \Predis\BulkCommand {
    public function getCommandId() { return 'SETNX'; }
    public function parseResponse($data) { return (bool) $data; }
}

class Get extends \Predis\InlineCommand {
    public function getCommandId() { return 'GET'; }
}

class GetMultiple extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'MGET'; }
}

class GetSet extends \Predis\BulkCommand {
    public function getCommandId() { return 'GETSET'; }
}

class Increment extends \Predis\InlineCommand {
    public function getCommandId() { return 'INCR'; }
}

class IncrementBy extends \Predis\InlineCommand {
    public function getCommandId() { return 'INCRBY'; }
}

class Decrement extends \Predis\InlineCommand {
    public function getCommandId() { return 'DECR'; }
}

class DecrementBy extends \Predis\InlineCommand {
    public function getCommandId() { return 'DECRBY'; }
}

class Exists extends \Predis\InlineCommand {
    public function getCommandId() { return 'EXISTS'; }
    public function parseResponse($data) { return (bool) $data; }
}

class Delete extends \Predis\InlineCommand {
    public function getCommandId() { return 'DEL'; }
}

class Type extends \Predis\InlineCommand {
    public function getCommandId() { return 'TYPE'; }
}

/* commands operating on the key space */
class Keys extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'KEYS'; }
    public function parseResponse($data) { 
        return strlen($data) > 0 ? explode(' ', $data) : array();
    }
}

class RandomKey extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'RANDOMKEY'; }
    public function parseResponse($data) { return $data !== '' ? $data : null; }
}

class Rename extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'RENAME'; }
}

class RenamePreserve extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'RENAMENX'; }
    public function parseResponse($data) { return (bool) $data; }
}

class Expire extends \Predis\InlineCommand {
    public function getCommandId() { return 'EXPIRE'; }
    public function parseResponse($data) { return (bool) $data; }
}

class ExpireAt extends \Predis\InlineCommand {
    public function getCommandId() { return 'EXPIREAT'; }
    public function parseResponse($data) { return (bool) $data; }
}

class DatabaseSize extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'DBSIZE'; }
}

class TimeToLive extends \Predis\InlineCommand {
    public function getCommandId() { return 'TTL'; }
}

/* commands operating on lists */
class ListPushTail extends \Predis\BulkCommand {
    public function getCommandId() { return 'RPUSH'; }
}

class ListPushHead extends \Predis\BulkCommand {
    public function getCommandId() { return 'LPUSH'; }
}

class ListLength extends \Predis\InlineCommand {
    public function getCommandId() { return 'LLEN'; }
}

class ListRange extends \Predis\InlineCommand {
    public function getCommandId() { return 'LRANGE'; }
}

class ListTrim extends \Predis\InlineCommand {
    public function getCommandId() { return 'LTRIM'; }
}

class ListIndex extends \Predis\InlineCommand {
    public function getCommandId() { return 'LINDEX'; }
}

class ListSet extends \Predis\BulkCommand {
    public function getCommandId() { return 'LSET'; }
}

class ListRemove extends \Predis\BulkCommand {
    public function getCommandId() { return 'LREM'; }
}

class ListPopFirst extends \Predis\InlineCommand {
    public function getCommandId() { return 'LPOP'; }
}

class ListPopLast extends \Predis\InlineCommand {
    public function getCommandId() { return 'RPOP'; }
}

/* commands operating on sets */
class SetAdd extends \Predis\BulkCommand {
    public function getCommandId() { return 'SADD'; }
    public function parseResponse($data) { return (bool) $data; }
}

class SetRemove extends \Predis\BulkCommand {
    public function getCommandId() { return 'SREM'; }
    public function parseResponse($data) { return (bool) $data; }
}

class SetPop  extends \Predis\InlineCommand {
    public function getCommandId() { return 'SPOP'; }
}

class SetMove extends \Predis\BulkCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'SMOVE'; }
    public function parseResponse($data) { return (bool) $data; }
}

class SetCardinality extends \Predis\InlineCommand {
    public function getCommandId() { return 'SCARD'; }
}

class SetIsMember extends \Predis\BulkCommand {
    public function getCommandId() { return 'SISMEMBER'; }
    public function parseResponse($data) { return (bool) $data; }
}

class SetIntersection extends \Predis\InlineCommand {
    public function getCommandId() { return 'SINTER'; }
}

class SetIntersectionStore extends \Predis\InlineCommand {
    public function getCommandId() { return 'SINTERSTORE'; }
}

class SetUnion extends \Predis\InlineCommand {
    public function getCommandId() { return 'SUNION'; }
}

class SetUnionStore extends \Predis\InlineCommand {
    public function getCommandId() { return 'SUNIONSTORE'; }
}

class SetDifference extends \Predis\InlineCommand {
    public function getCommandId() { return 'SDIFF'; }
}

class SetDifferenceStore extends \Predis\InlineCommand {
    public function getCommandId() { return 'SDIFFSTORE'; }
}

class SetMembers extends \Predis\InlineCommand {
    public function getCommandId() { return 'SMEMBERS'; }
}

class SetRandomMember extends \Predis\InlineCommand {
    public function getCommandId() { return 'SRANDMEMBER'; }
}

/* multiple databases handling commands */
class SelectDatabase extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'SELECT'; }
}

class MoveKey extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'MOVE'; }
    public function parseResponse($data) { return (bool) $data; }
}

class FlushDatabase extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'FLUSHDB'; }
}

class FlushAll extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'FLUSHALL'; }
}

/* sorting */
class Sort extends \Predis\InlineCommand {
    public function getCommandId() { return 'SORT'; }
    public function filterArguments(Array $arguments) {
        if (count($arguments) === 1) {
            return $arguments;
        }

        // TODO: add more parameters checks
        $query = array($arguments[0]);
        $sortParams = $arguments[1];

        if (isset($sortParams['by'])) {
            $query[] = 'BY';
            $query[] = $sortParams['by'];
        }
        if (isset($sortParams['get'])) {
            $getargs = $sortParams['get'];
            if (is_array($getargs)) {
                foreach ($getargs as $getarg) {
                    $query[] = 'GET';
                    $query[] = $getarg;
                }
            }
            else {
                $query[] = 'GET';
                $query[] = $getargs;
            }
        }
        if (isset($sortParams['limit']) && is_array($sortParams['limit'])) {
            $query[] = 'LIMIT';
            $query[] = $sortParams['limit'][0];
            $query[] = $sortParams['limit'][1];
        }
        if (isset($sortParams['sort'])) {
            $query[] = strtoupper($sortParams['sort']);
        }
        if (isset($sortParams['alpha']) && $sortParams['alpha'] == true) {
            $query[] = 'ALPHA';
        }
        if (isset($sortParams['store']) && $sortParams['store'] == true) {
            $query[] = 'STORE';
            $query[] = $sortParams['store'];
        }

        return $query;
    }
}

/* persistence control commands */
class Save extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'SAVE'; }
}

class BackgroundSave extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'BGSAVE'; }
    public function parseResponse($data) {
        if ($data == 'Background saving started') {
            return true;
        }
        return $data;
    }
}

class LastSave extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'LASTSAVE'; }
}

class Shutdown extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'SHUTDOWN'; }
    public function closesConnection() { return true; }
}

/* remote server control commands */
class Info extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'INFO'; }
    public function parseResponse($data) {
        $info      = array();
        $infoLines = explode("\r\n", $data, -1);
        foreach ($infoLines as $row) {
            list($k, $v) = explode(':', $row);
            if (!preg_match('/^db\d+$/', $k)) {
                $info[$k] = $v;
            }
            else {
                $db = array();
                foreach (explode(',', $v) as $dbvar) {
                    list($dbvk, $dbvv) = explode('=', $dbvar);
                    $db[trim($dbvk)] = $dbvv;
                }
                $info[$k] = $db;
            }
        }
        return $info;
    }
}

class SlaveOf extends \Predis\InlineCommand {
    public function canBeHashed()  { return false; }
    public function getCommandId() { return 'SLAVEOF'; }
    public function filterArguments(Array $arguments) {
        if (count($arguments) === 0 || $arguments[0] === 'NO ONE') {
            return array('NO', 'ONE');
        }
        return $arguments;
    }
}
?>