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<?php
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
* @package thrift.transport
*/
namespace Thrift\Transport;
use Thrift\Exception\TTransportException;
use Thrift\Factory\TStringFuncFactory;
/**
* Base interface for a transport agent.
*
* @package thrift.transport
*/
abstract class TTransport
{
/**
* Whether this transport is open.
*
* @return boolean true if open
*/
abstract public function isOpen();
/**
* Open the transport for reading/writing
*
* @throws TTransportException if cannot open
*/
abstract public function open();
/**
* Close the transport.
*/
abstract public function close();
/**
* Read some data into the array.
*
* @param int $len How much to read
* @return string The data that has been read
* @throws TTransportException if cannot read any more data
*/
abstract public function read($len);
/**
* Guarantees that the full amount of data is read.
*
* @return string The data, of exact length
* @throws TTransportException if cannot read data
*/
public function readAll($len)
{
// return $this->read($len);
$data = '';
$got = 0;
while (($got = TStringFuncFactory::create()->strlen($data)) < $len) {
$data .= $this->read($len - $got);
}
return $data;
}
/**
* Writes the given data out.
*
* @param string $buf The data to write
* @throws TTransportException if writing fails
*/
abstract public function write($buf);
/**
* Flushes any pending data out of a buffer
*
* @throws TTransportException if a writing error occurs
*/
public function flush()
{
}
}
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