晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Directory :  /home/stando/www/wp-content/plugins/duplicator/lib/dup_archive/daws/

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Current File : //home/stando/www/wp-content/plugins/duplicator/lib/dup_archive/daws/class.daws.state.expand.php
<?php
defined('ABSPATH') || defined('DUPXABSPATH') || exit;
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

require_once(DAWSConstants::$DUPARCHIVE_STATES_DIR.'/class.duparchive.state.expand.php');

class DAWSExpandState extends DupArchiveExpandState
{
    public static $instance = null;

    const StateFilename = 'expandstate.json';

    public static function purgeStatefile()
    {
        $stateFilepath = dirname(__FILE__).'/'.self::StateFilename;

        DupLiteSnapLibIOU::rm($stateFilepath, false);
    }

    public static function getInstance($reset = false)
    {
        if ((self::$instance == null) && (!$reset)) {
            $stateFilepath = dirname(__FILE__).'/'.self::StateFilename;

            self::$instance = new DAWSExpandState();

            if (file_exists($stateFilepath)) {
                $stateHandle = DupLiteSnapLibIOU::fopen($stateFilepath, 'rb');

               // RSR we shouldn't need read locks and it seems to screw up on some boxes anyway.. DupLiteSnapLibIOU::flock($stateHandle, LOCK_EX);

                $stateString = fread($stateHandle, filesize($stateFilepath));

                $data = json_decode($stateString);

                self::$instance->setFromData($data);

                self::$instance->fileRenames = (array)(self::$instance->fileRenames);

           //     DupLiteSnapLibIOU::flock($stateHandle, LOCK_UN);

                DupLiteSnapLibIOU::fclose($stateHandle);
            } else {
                $reset = true;
            }
        }

        if ($reset) {
            self::$instance = new DAWSExpandState();

            self::$instance->reset();
        }

        return self::$instance;
    }

    private function setFromData($data)
    {
        $this->currentFileHeader     = $data->currentFileHeader;
        $this->archiveHeader         = $data->archiveHeader;
        $this->archiveOffset         = $data->archiveOffset;
        $this->archivePath           = $data->archivePath;
        $this->basePath              = $data->basePath;
        $this->currentFileOffset     = $data->currentFileOffset;
        $this->failures              = $data->failures;
        $this->isCompressed          = $data->isCompressed;
        $this->startTimestamp        = $data->startTimestamp;
        $this->timeSliceInSecs       = $data->timeSliceInSecs;
        $this->validateOnly          = $data->validateOnly;
        $this->fileWriteCount        = $data->fileWriteCount;
        $this->directoryWriteCount   = $data->directoryWriteCount;
        $this->working               = $data->working;
        $this->filteredDirectories   = $data->filteredDirectories;
        $this->filteredFiles         = $data->filteredFiles;
        $this->fileRenames           = $data->fileRenames;
        $this->directoryModeOverride = $data->directoryModeOverride;
        $this->fileModeOverride      = $data->fileModeOverride;
        $this->lastHeaderOffset      = $data->lastHeaderOffset;
        $this->throttleDelayInUs     = $data->throttleDelayInUs;
        $this->timerEnabled          = $data->timerEnabled;
    }

    public function reset()
    {
        $stateFilepath = dirname(__FILE__).'/'.self::StateFilename;

        $stateHandle = DupLiteSnapLibIOU::fopen($stateFilepath, 'w');

        DupLiteSnapLibIOU::flock($stateHandle, LOCK_EX);

        $this->initMembers();

        DupLiteSnapLibIOU::fwrite($stateHandle, DupLiteSnapJsonU::wp_json_encode($this));

        DupLiteSnapLibIOU::flock($stateHandle, LOCK_UN);
        
        DupLiteSnapLibIOU::fclose($stateHandle);
    }

    public function save()
    {
        $stateFilepath = dirname(__FILE__).'/'.self::StateFilename;

        $stateHandle = DupLiteSnapLibIOU::fopen($stateFilepath, 'w');

        DupLiteSnapLibIOU::flock($stateHandle, LOCK_EX);

        DupArchiveUtil::tlog("saving state");
        DupLiteSnapLibIOU::fwrite($stateHandle, DupLiteSnapJsonU::wp_json_encode($this));

        DupLiteSnapLibIOU::flock($stateHandle, LOCK_UN);
        
        DupLiteSnapLibIOU::fclose($stateHandle);
    }

    private function initMembers()
    {
        $this->currentFileHeader = null;

        $this->archiveOffset         = 0;
        $this->archiveHeader         = 0;
        $this->archivePath           = null;
        $this->basePath              = null;
        $this->currentFileOffset     = 0;
        $this->failures              = array();
        $this->isCompressed          = false;
        $this->startTimestamp        = time();
        $this->timeSliceInSecs       = -1;
        $this->working               = false;
        $this->validateOnly          = false;
        $this->filteredDirectories   = array();
        $this->filteredFiles         = array();
        $this->fileRenames           = array();
        $this->directoryModeOverride = -1;
        $this->fileModeOverride      = -1;
        $this->lastHeaderOffset  = -1;
        $this->throttleDelayInUs     = 0;
        $this->timerEnabled          = true;
    }
}

haha - 2025