157 lines
3.3 KiB
PHP
157 lines
3.3 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Files\Stream;
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class StaticStream {
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const MODE_FILE = 0100000;
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public $context;
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protected static $data = array();
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protected $path = '';
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protected $pointer = 0;
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protected $writable = false;
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public function stream_close() {
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}
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public function stream_eof() {
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return $this->pointer >= strlen(self::$data[$this->path]);
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}
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public function stream_flush() {
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}
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public static function clear() {
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self::$data = array();
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}
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public function stream_open($path, $mode, $options, &$opened_path) {
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switch ($mode[0]) {
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case 'r':
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if (!isset(self::$data[$path])) return false;
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$this->path = $path;
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$this->writable = isset($mode[1]) && $mode[1] == '+';
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break;
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case 'w':
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self::$data[$path] = '';
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$this->path = $path;
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$this->writable = true;
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break;
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case 'a':
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if (!isset(self::$data[$path])) self::$data[$path] = '';
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$this->path = $path;
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$this->writable = true;
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$this->pointer = strlen(self::$data[$path]);
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break;
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case 'x':
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if (isset(self::$data[$path])) return false;
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$this->path = $path;
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$this->writable = true;
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break;
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case 'c':
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if (!isset(self::$data[$path])) self::$data[$path] = '';
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$this->path = $path;
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$this->writable = true;
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break;
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default:
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return false;
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}
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$opened_path = $this->path;
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return true;
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}
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public function stream_read($count) {
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$bytes = min(strlen(self::$data[$this->path]) - $this->pointer, $count);
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$data = substr(self::$data[$this->path], $this->pointer, $bytes);
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$this->pointer += $bytes;
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return $data;
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}
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public function stream_seek($offset, $whence = SEEK_SET) {
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$len = strlen(self::$data[$this->path]);
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switch ($whence) {
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case SEEK_SET:
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if ($offset <= $len) {
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$this->pointer = $offset;
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return true;
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}
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break;
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case SEEK_CUR:
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if ($this->pointer + $offset <= $len) {
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$this->pointer += $offset;
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return true;
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}
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break;
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case SEEK_END:
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if ($len + $offset <= $len) {
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$this->pointer = $len + $offset;
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return true;
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}
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break;
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}
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return false;
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}
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public function stream_stat() {
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return $this->url_stat($this->path);
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}
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public function stream_tell() {
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return $this->pointer;
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}
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public function stream_write($data) {
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if (!$this->writable) return 0;
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$size = strlen($data);
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if ($this->stream_eof()) {
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self::$data[$this->path] .= $data;
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} else {
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self::$data[$this->path] = substr_replace(
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self::$data[$this->path],
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$data,
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$this->pointer
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);
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}
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$this->pointer += $size;
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return $size;
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}
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public function unlink($path) {
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if (isset(self::$data[$path])) {
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unset(self::$data[$path]);
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}
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return true;
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}
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public function url_stat($path) {
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if (isset(self::$data[$path])) {
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$size = strlen(self::$data[$path]);
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$time = time();
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$data = array(
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'dev' => 0,
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'ino' => 0,
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'mode' => self::MODE_FILE | 0777,
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'nlink' => 1,
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'uid' => 0,
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'gid' => 0,
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'rdev' => '',
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'size' => $size,
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'atime' => $time,
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'mtime' => $time,
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'ctime' => $time,
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'blksize' => -1,
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'blocks' => -1,
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);
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return array_values($data) + $data;
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}
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return false;
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}
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}
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