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#!/usr/bin/php
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<?php
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/*
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	QBPWCF, Quick Build PHP website Component base on Fedora Linux.
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    Copyright (C) 2015~2024 Min-Jhin,Chen
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    This file is part of QBPWCF.
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    QBPWCF is free software: you can redistribute it and/or modify
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    it under the terms of the GNU General Public License as published by
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    the Free Software Foundation, either version 3 of the License, or
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    (at your option) any later version.
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    QBPWCF is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with QBPWCF.  If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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逐一bytes比對兩個檔案有哪些bytes不同
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*/
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#使用命名空間qbpwcf
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namespace qbpwcf;
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#以該檔案的實際位置的 lib path 為 include path 首位
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exec("cd ".pathinfo(__FILE__)["dirname"]."/../../;pwd;",$output,$status);
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set_include_path($output[0].PATH_SEPARATOR.get_include_path());
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#匯入外部套件
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include("allInOne.php");
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#函式說明:
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#抓取命令列的參數.
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#回傳結果:
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#$result["status"],執行是否正常,"true"代表正常,"false"代表不正常.
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#$reuslt["error"],執行不正常結束的錯訊息陣列.
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#$result["function"],當前執行的函式名稱.
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#$result["argu"],使用的參數陣列.
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#$result["content"],要回傳的參數陣列.
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#$result["count"],參數的數量.
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#必填參數:
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#無
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#可省略參數:
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#$conf["echo"],"true"代表要將抓到的參數一個個印出來,"false"代表用回傳的方式,預設為"false".
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$conf["echo"]="false";
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$getArgu=cmd::getArgu($conf);
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unset($conf);
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#如果抓參數出錯
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if($getArgu["status"]==="false")
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{
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	#印出內容
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	var_dump($getArgu);
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	#結束執行
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	exit;
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}
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#如果參數數量不等於3
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if($getArgu["count"]!==3)
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{
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	#印出內容
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	var_dump($getArgu);
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	#結束執行
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	exit;
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}
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#取得檔案A名稱
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$fileNameA=$getArgu["content"][1];
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#取得檔案B名稱
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$fileNameB=$getArgu["content"][2];
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#檔案A的pointer
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$fhA=fopen($fileNameA,"r");
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#檔案B的pointer
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$fhB=fopen($fileNameB,"r");
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#位置索引
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$addr=0;
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#無窮迴圈
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while(true)
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{
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	#位置從1開始,且每次+1.
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	$addr++;
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	#若檔案A尚未結束
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	if(!feof($fhA))
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	{
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		#取得 1 bytes
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		$bytesA=fread($fhA,1);
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	}
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	#若檔案B尚未結束
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	if(!feof($fhB))
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	{
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		#取得 1 bytes
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		$bytesB=fread($fhB,1);
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	}
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	#兩邊都有資料時
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	if( isset($bytesA) && isset($bytesB) )
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	{
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		#解析A成16進位大小文數字
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		$bytesA=strtoupper(sprintf("%02s",base_convert(ord($bytesA),10,16)));
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		#解析B成16進位大小文數字
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		$bytesB=strtoupper(sprintf("%02s",base_convert(ord($bytesB),10,16)));
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		#如果有差異
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		if($bytesA!==$bytesB)
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		{
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			echo "於第 ".$addr." 個bytes處相異,左方為:".$bytesA.";右方為:".$bytesB.PHP_EOL;
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			unset($bytesA);
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			unset($bytesB);
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			continue;
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		}
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	}
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	#單邊有資料
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	else
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	{
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		if(isset($bytesA))
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		{
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			#解析A成16進位大小文數字
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			$bytesA=strtoupper(sprintf("%02s",base_convert(ord($bytesA),10,16)));
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			echo "於第 ".$addr." 個bytes處相異,左方為:".$bytesA.";右方不存在".PHP_EOL;
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			unset($bytesA);
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			continue;
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		}
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		else if(isset($bytesB))
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		{
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			#解析B成16進位大小文數字
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			$bytesB=strtoupper(sprintf("%02s",base_convert(ord($bytesB),10,16)));
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			echo "於第 ".$addr." 個bytes處相異,左方不存在;右方為:".$bytesB.PHP_EOL;
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			unset($bytesB);
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			continue;
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		}
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		else
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		{
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			break;
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		}
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	}
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}
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?>