nur-sery/nur_src/b/io/StreamWriter.php

72 lines
1.5 KiB
PHP

<?php
namespace nur\b\io;
/**
* Class FileWriter: écriture dans un flux
*/
class StreamWriter implements IWriter {
use Twriter, Tfilter;
/** @var resource */
protected $fd;
/** @var bool */
protected $close;
/** @throws IOException */
function __construct($fd, ?bool $close=null) {
if ($close === null) $close = $fd !== null;
if ($fd === null) $fd = STDOUT;
$this->fd = $fd;
$this->close = $close;
}
function setEncodingFilter(string $to, string $from="utf-8"): void {
$this->_setEncodingFilter($from, $to);
}
/**
* @throws IOException
* @return resource
*/
protected final function open() {
IOException::ensure_open($this->fd === null);
$this->_streamAppendFilters($this->fd);
return $this->fd;
}
/** @throws IOException */
function getResource() {
return $this->open();
}
/** @throws IOException */
function seek(int $offset=0, int $whence=SEEK_SET): int {
return fseek($this->open(), $offset, $whence);
}
/** @throws IOException */
function _write(string $value): void {
IOException::ensure_not_false(fwrite($this->open(), $value), "write");
}
function putContents(string $contents): void {
try {
$this->_write($contents);
} finally {
$this->close();
}
}
function serialize($object): void {
$this->putContents(serialize($object));
}
function close(bool $close=true): void {
if ($this->fd !== null && $this->close && $close) {
fclose($this->fd);
$this->fd = null;
}
}
}