104 lines
3.5 KiB
PHP
104 lines
3.5 KiB
PHP
<?php
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/**
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* Slim - a micro PHP 5 framework
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*
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* @author Josh Lockhart <info@slimframework.com>
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* @copyright 2011 Josh Lockhart
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* @link http://www.slimframework.com
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* @license http://www.slimframework.com/license
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* @version 1.6.0
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*
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* MIT LICENSE
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* Stream Data
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*
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* This class will stream raw data to the HTTP client.
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* You may control how the data is streamed by passing an associative array
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* of settings as the second argument to the constructor. They are:
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*
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* 1) buffer_size - The size of each streamed data chunk
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* 2) time_limit - The amount of time allowed to stream the data
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*
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* By default, PHP will run indefinitely until the data streaming is complete
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* or the client closes the HTTP connection. The chunk size is 8192 bytes
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*
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* @package Slim
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* @author Josh Lockhart
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* @since 1.6.0
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*/
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class Slim_Stream_Data {
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/**
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* @var string
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*/
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protected $data;
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/**
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* @var array
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*/
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protected $options;
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/**
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* Constructor
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* @param string $data The raw data to be streamed to the HTTP client
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* @param array $options Optional associative array of streaming settings
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* @return void
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*/
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public function __construct( $data, $options = array() ) {
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$this->data = (string)$data;
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$this->options = array_merge(array(
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'buffer_size' => 8192,
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'time_limit' => 0
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), $options);
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}
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/**
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* Process
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*
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* This method initiates the data stream to the HTTP client. Buffered
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* content is continually and immediately flushed. Use the `time_limit`
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* setting if you want to set a finite timeout for large data; otherwise
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* the script is configured to run indefinitely until all data is sent.
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*
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* Data will be base64 encoded into memory and streamed in chunks to
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* the HTTP client.
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*
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* @return void
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*/
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public function process() {
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set_time_limit($this->options['time_limit']);
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$handle = fopen('data:text/plain;base64,' . base64_encode($this->data), 'rb');
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if ( $handle ) {
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while ( !feof($handle) && connection_status() === 0 ) {
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$buffer = fread($handle, $this->options['buffer_size']);
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if ( $buffer ) {
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echo $buffer;
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ob_flush();
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flush();
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}
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}
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fclose($handle);
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}
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}
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}
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