mirror of
https://github.com/danog/file.git
synced 2024-11-26 20:04:51 +01:00
617 lines
18 KiB
PHP
617 lines
18 KiB
PHP
<?php
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namespace Amp\File;
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use Amp\{ Deferred, Failure, Loop, Promise, Success };
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class EioDriver implements Driver {
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private $watcher;
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private $pending = 0;
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private $incrementor;
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private $callableDecrementor;
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private static $stream;
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/**
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* We have to keep a static reference of eio event streams,
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* because if we don't, garbage collection can unload eio's
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* underlying pipe via a system close() call before it's
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* finished which generates a SIGPIPE.
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*/
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public function __construct() {
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if (empty(self::$stream)) {
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\eio_init();
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self::$stream = \eio_get_event_stream();
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}
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$this->callableDecrementor = function() {
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($this->incrementor)(-1);
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};
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$this->incrementor = function ($increment) {
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switch ($increment) {
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case 1:
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case -1:
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$this->pending += $increment;
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break;
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default:
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throw new FilesystemException(
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"Invalid pending event increment; 1 or -1 required"
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);
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}
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if ($this->pending === 0) {
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Loop::disable($this->watcher);
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} elseif ($this->pending === 1) {
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Loop::enable($this->watcher);
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}
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};
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$this->watcher = Loop::onReadable(self::$stream, static function () {
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while (\eio_npending()) {
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\eio_poll();
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}
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});
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Loop::disable($this->watcher);
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}
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/**
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* {@inheritdoc}
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*/
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public function open(string $path, string $mode): Promise {
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$flags = $this->parseMode($mode);
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$chmod = ($flags & \EIO_O_CREAT) ? 0644 : 0;
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($this->incrementor)(1);
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$deferred = new Deferred;
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$openArr = [$mode, $path, $deferred];
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\eio_open($path, $flags, $chmod, \EIO_PRI_DEFAULT, [$this, "onOpenHandle"], $openArr);
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return $deferred->promise();
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}
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private function parseMode(string $mode): int {
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$mode = \str_replace(['b', 't'], '', $mode);
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switch ($mode) {
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case 'r': return \EIO_O_RDONLY;
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case 'r+': return \EIO_O_RDWR;
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case 'w': return \EIO_O_WRONLY | \EIO_O_TRUNC | \EIO_O_CREAT;
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case 'w+': return \EIO_O_RDWR | \EIO_O_TRUNC | \EIO_O_CREAT;
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case 'a': return \EIO_O_WRONLY | \EIO_O_APPEND | \EIO_O_CREAT;
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case 'a+': return \EIO_O_RDWR | \EIO_O_APPEND | \EIO_O_CREAT;
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case 'x': return \EIO_O_WRONLY | \EIO_O_CREAT | \EIO_O_EXCL;
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case 'x+': return \EIO_O_RDWR | \EIO_O_CREAT | \EIO_O_EXCL;
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case 'c': return \EIO_O_WRONLY | \EIO_O_CREAT;
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case 'c+': return \EIO_O_RDWR | \EIO_O_CREAT;
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default:
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throw new \Error('Invalid file mode');
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}
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}
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private function onOpenHandle($openArr, $result, $req) {
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list($mode, $path, $deferred) = $openArr;
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if ($result === -1) {
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($this->incrementor)(-1);
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} elseif ($mode[0] === "a") {
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\array_unshift($openArr, $result);
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\eio_ftruncate($result, $offset = 0, \EIO_PRI_DEFAULT, [$this, "onOpenFtruncate"], $openArr);
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} else {
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\array_unshift($openArr, $result);
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\eio_fstat($result, \EIO_PRI_DEFAULT, [$this, "onOpenFstat"], $openArr);
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}
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}
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private function onOpenFtruncate($openArr, $result, $req) {
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($this->incrementor)(-1);
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list($fh, $mode, $path, $deferred) = $openArr;
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$handle = new EioHandle($this->incrementor, $fh, $path, $mode, $size = 0);
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$deferred->resolve($handle);
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}
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}
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private function onOpenFstat($openArr, $result, $req) {
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($this->incrementor)(-1);
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list($fh, $mode, $path, $deferred) = $openArr;
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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StatCache::set($path, $result);
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$handle = new EioHandle($this->incrementor, $fh, $path, $mode, $result["size"]);
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$deferred->resolve($handle);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function stat(string $path): Promise {
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if ($stat = StatCache::get($path)) {
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return new Success($stat);
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}
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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$data = [$deferred, $path];
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\eio_stat($path, $priority, [$this, "onStat"], $data);
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return $deferred->promise();
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}
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private function onStat($data, $result, $req) {
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list($deferred, $path) = $data;
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($this->incrementor)(-1);
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if ($result === -1) {
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$deferred->resolve(null);
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} else {
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StatCache::set($path, $result);
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$deferred->resolve($result);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function exists(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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$deferred->resolve((bool) $result);
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function isdir(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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if ($result) {
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$deferred->resolve(!($result["mode"] & \EIO_S_IFREG));
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} else {
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$deferred->resolve(false);
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}
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function isfile(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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if ($result) {
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$deferred->resolve((bool) ($result["mode"] & \EIO_S_IFREG));
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} else {
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$deferred->resolve(false);
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}
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function size(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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if (empty($result)) {
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$deferred->fail(new FilesystemException(
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"Specified path does not exist"
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));
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} elseif ($result["mode"] & \EIO_S_IFREG) {
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$deferred->resolve($result["size"]);
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} else {
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$deferred->fail(new FilesystemException(
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"Specified path is not a regular file"
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));
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}
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function mtime(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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if ($result) {
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$deferred->resolve($result["mtime"]);
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} else {
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$deferred->fail(new FilesystemException(
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"Specified path does not exist"
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));
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}
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function atime(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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if ($result) {
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$deferred->resolve($result["atime"]);
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} else {
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$deferred->fail(new FilesystemException(
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"Specified path does not exist"
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));
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}
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function ctime(string $path): Promise {
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$deferred = new Deferred;
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$this->stat($path)->onResolve(function ($error, $result) use ($deferred) {
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if ($result) {
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$deferred->resolve($result["ctime"]);
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} else {
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$deferred->fail(new FilesystemException(
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"Specified path does not exist"
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));
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}
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});
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function lstat(string $path): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_lstat($path, $priority, [$this, "onLstat"], $deferred);
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return $deferred->promise();
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}
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private function onLstat($deferred, $result, $req) {
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($this->incrementor)(-1);
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if ($result === -1) {
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$deferred->resolve(null);
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} else {
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$deferred->resolve($result);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function symlink(string $target, string $link): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_symlink($target, $link, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function link(string $target, string $link): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_link($target, $link, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function readlink(string $path): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_readlink($path, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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private function onGenericResult($deferred, $result, $req) {
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($this->incrementor)(-1);
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$deferred->resolve(true);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function rename(string $from, string $to): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_rename($from, $to, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function unlink(string $path): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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$data = [$deferred, $path];
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\eio_unlink($path, $priority, [$this, "onUnlink"], $data);
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return $deferred->promise();
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}
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private function onUnlink($data, $result, $req) {
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list($deferred, $path) = $data;
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($this->incrementor)(-1);
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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StatCache::clear($path);
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$deferred->resolve(true);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function mkdir(string $path, int $mode = 0644, bool $recursive = false): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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if ($recursive) {
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$path = str_replace("/", DIRECTORY_SEPARATOR, $path);
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$arrayPath = array_filter(explode(DIRECTORY_SEPARATOR, $path));
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$tmpPath = "";
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$callback = function() use (
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&$callback, &$arrayPath, &$tmpPath, $mode, $priority, $deferred
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) {
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$tmpPath .= DIRECTORY_SEPARATOR . array_shift($arrayPath);
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if (empty($arrayPath)) {
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\eio_mkdir($tmpPath, $mode, $priority, [$this, "onGenericResult"], $deferred);
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} else {
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$this->isdir($tmpPath)->onResolve(function ($error, $result) use (
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$callback, $tmpPath, $mode, $priority
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) {
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if ($result) {
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$callback();
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} else {
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\eio_mkdir($tmpPath, $mode, $priority, $callback);
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}
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});
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}
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};
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$callback();
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} else {
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\eio_mkdir($path, $mode, $priority, [$this, "onGenericResult"], $deferred);
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}
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function rmdir(string $path): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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$data = [$deferred, $path];
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\eio_rmdir($path, $priority, [$this, "onRmdir"], $data);
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return $deferred->promise();
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}
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private function onRmdir($data, $result, $req) {
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list($deferred, $path) = $data;
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($this->incrementor)(-1);
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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StatCache::clear($path);
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$deferred->resolve(true);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function scandir(string $path): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$flags = \EIO_READDIR_STAT_ORDER | \EIO_READDIR_DIRS_FIRST;
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$priority = \EIO_PRI_DEFAULT;
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\eio_readdir($path, $flags, $priority, [$this, "onScandir"], $deferred);
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return $deferred->promise();
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}
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private function onScandir($deferred, $result, $req) {
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($this->incrementor)(-1);
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$deferred->resolve($result["names"]);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function chmod(string $path, int $mode): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_chmod($path, $mode, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function chown(string $path, int $uid, int $gid): Promise {
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_chown($path, $uid, $gid, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function touch(string $path): Promise {
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$atime = $mtime = \time();
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($this->incrementor)(1);
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$deferred = new Deferred;
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$priority = \EIO_PRI_DEFAULT;
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\eio_utime($path, $atime, $mtime, $priority, [$this, "onGenericResult"], $deferred);
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return $deferred->promise();
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}
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/**
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* {@inheritdoc}
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*/
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public function get(string $path): Promise {
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$flags = $flags = \EIO_O_RDONLY;
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$mode = 0;
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$priority = \EIO_PRI_DEFAULT;
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($this->incrementor)(1);
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$deferred = new Deferred;
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\eio_open($path, $flags, $mode, $priority, [$this, "onGetOpen"], $deferred);
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return $deferred->promise();
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}
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private function onGetOpen($deferred, $result, $req) {
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if ($result === -1) {
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$deferred->fail(new FilesystemException(
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\eio_get_last_error($req)
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));
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} else {
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$priority = \EIO_PRI_DEFAULT;
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\eio_fstat($result, $priority, [$this, "onGetFstat"], [$result, $deferred]);
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}
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}
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|
|
|
private function onGetFstat($fhAndPromisor, $result, $req) {
|
|
list($fh, $deferred) = $fhAndPromisor;
|
|
if ($result === -1) {
|
|
$deferred->fail(new FilesystemException(
|
|
\eio_get_last_error($req)
|
|
));
|
|
return;
|
|
}
|
|
|
|
$offset = 0;
|
|
$length = $result["size"];
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
\eio_read($fh, $length, $offset, $priority, [$this, "onGetRead"], $fhAndPromisor);
|
|
}
|
|
|
|
private function onGetRead($fhAndPromisor, $result, $req) {
|
|
list($fh, $deferred) = $fhAndPromisor;
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
\eio_close($fh, $priority, $this->callableDecrementor);
|
|
if ($result === -1) {
|
|
$deferred->fail(new FilesystemException(
|
|
\eio_get_last_error($req)
|
|
));
|
|
} else {
|
|
$deferred->resolve($result);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function put(string $path, string $contents): Promise {
|
|
$flags = \EIO_O_RDWR | \EIO_O_CREAT;
|
|
$mode = \EIO_S_IRUSR | \EIO_S_IWUSR | \EIO_S_IXUSR;
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
|
|
($this->incrementor)(1);
|
|
$deferred = new Deferred;
|
|
$data = [$contents, $deferred];
|
|
\eio_open($path, $flags, $mode, $priority, [$this, "onPutOpen"], $data);
|
|
|
|
return $deferred->promise();
|
|
}
|
|
|
|
private function onPutOpen($data, $result, $req) {
|
|
list($contents, $deferred) = $data;
|
|
if ($result === -1) {
|
|
$deferred->fail(new FilesystemException(
|
|
\eio_get_last_error($req)
|
|
));
|
|
} else {
|
|
$length = strlen($contents);
|
|
$offset = 0;
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
$callback = [$this, "onPutWrite"];
|
|
$fhAndPromisor = [$result, $deferred];
|
|
\eio_write($result, $contents, $length, $offset, $priority, $callback, $fhAndPromisor);
|
|
}
|
|
}
|
|
|
|
private function onPutWrite($fhAndPromisor, $result, $req) {
|
|
list($fh, $deferred) = $fhAndPromisor;
|
|
\eio_close($fh);
|
|
$priority = \EIO_PRI_DEFAULT;
|
|
\eio_close($fh, $priority, $this->callableDecrementor);
|
|
if ($result === -1) {
|
|
$deferred->fail(new FilesystemException(
|
|
\eio_get_last_error($req)
|
|
));
|
|
} else {
|
|
$deferred->resolve($result);
|
|
}
|
|
}
|
|
|
|
public function __destruct() {
|
|
Loop::cancel($this->watcher);
|
|
}
|
|
}
|