比較兩個文件，並顯示網頁的差異。
它可以採取兩個文件，並比較他們的內容使用diff(Different)程序。
類可以解析diff程序的輸出，為用戶更容易理解的方式，是在一個Web頁面中的兩個文件之間的差異。
Class：class_diffTool.php
<?php
class diffTool
{
//*********************************************************************************//
//*********************************************************************************//
//*********************************************************************************//
public function renderDiffTool($fullNamePath1, $fullNamePath2)
{
global $INDEX_PHP;
$res = '';
$filename1=basename($fullNamePath1);
$filename2=basename($fullNamePath2);
//What file I need to show on top
$file2show = '1';
if(isset($POST["file2show"]) && $POST["file2show"]!='') $file2show=$POST["file2show"];
//check to see if the mime-type starts with 'text'
$finfo = finfo_open(FILEINFO_MIME);
$conType1 = finfo_file($finfo, $fullNamePath1);
$conType2 = finfo_file($finfo, $fullNamePath2);
finfo_close($finfo);
if( !(substr( $conType1, 0, 4)=='text' || substr($conType1, 0, 19) == 'application/x-empty') ||
!(substr( $conType2, 0, 4)=='text' || substr($conType2, 0, 19) == 'application/x-empty'))
{
return "<script>
alert('File format not supported');
window.location.href = '/$INDEX_PHP';
</script>";
}
$res .= "<div style="position:absolute;top:0px;left:0px;z-index:10;background:#373737; width:100%;min-height:100%;font-size:8pt;">";
$disp1 = "";
$bg1 = "background:#FF6600;";
$disp2 = "display:none;";
$bg2 = "";
if($file2show == '2')
{
$disp2 = "";
$bg2 = "background:#FF6600;";
$disp1 = "display:none;";
$bg1 = "";
}
$res .= "
<div class="listM_Oriz" style="float:left;margin-left:2%;">
<ul>
<li style="width:470px;">
<a id="fn1" href="" style="".$bg1."" onclick="$('#textEditor2').hide();$('#fn2').css('background','');
$('#textEditor1').show();$('#fn1').css('background','#FF6600');
return false;">".$filename1."</a>
</li>
</ul>
</div>
<div class="listM_Oriz" style="float:right;margin-right:2%;">
<ul>
<li style="width:470px;">
<a id="fn2" href="" style="".$bg2."" onclick="$('#textEditor1').hide();$('#fn1').css('background','');
$('#textEditor2').show();$('#fn2').css('background','#FF6600');
return false;">".$filename2."</a>
</li>
</ul>
</div>";
$res .= "<div style="clear:both;"> </div><hr>";
//FIRST TEXT AREA
$res .= "<div id="textEditor1" style="".$disp1."">";
$res .= "<div style="float:left;width:48%;margin-right:1%;margin-left:1%;">";
$te1= new textEditor();
$po1= Array();
$po1['filename'] = $fullNamePath1;
$res .= $te1->renderForm($po1, '1');
$res .= "</div>";
$res .= "<div style="float:left;width:48%;margin-right:1%;margin-left:1%;">";
$res .= $this->renderDiffColumn($fullNamePath2, $fullNamePath1);
$res .= "</div>";
$res .= "</div>";
//SECOND TEXT AREA
$res .= "<div id="textEditor2" style="".$disp2."">";
$res .= "<div style="float:left;width:48%;margin-right:1%;margin-left:1%;">";
$res .= $this->renderDiffColumn($fullNamePath1, $fullNamePath2);
$res .= "</div>";
$res .= "<div style="float:left;width:48%;margin-right:1%;margin-left:1%;">";
$te2= new textEditor();
$po2= Array();
$po2['filename'] = $fullNamePath2;
$res .= $te2->renderForm($po2, '2');
$res .= "</div>";
$res .= "</div>";
$res .= "<div style="clear:both;"> </div>";
$res .= "</div>"; //Close the principal overlapped DIV
return $res;
}
//*********************************************************************************//
//*********************************************************************************//
//*********************************************************************************//
private function renderDiffColumn($fullNamePath1, $fullNamePath2)
{
$orig=explode("n", file_get_contents($fullNamePath1) );
$diffRes =explode("n", shell_exec("diff $fullNamePath1 $fullNamePath2") );
$finalFile = '';
$action = Array();
$res = '';
$i=1;
$lines=1;
while(!empty($diffRes))
{
$diffRes = $this->retrieveDiffAction($diffRes, $action);
//Preparazione al posizionamento
switch($action['type'])
{
case 'a':
$action['l11']++;
break;
}
//Mi posiziono all'inizio della differenza
while($i < $action['l11'])
{
$finalFile .=str_pad ("$lines | ", 8, " ", STR_PAD_LEFT).array_shift($orig)."n";
$lines++;
$i++;
}
while( ($d=array_shift($action['data'])) )
{
//Inserisco le differenze
switch($action['type'])
{
case 'a':
$str = substr($d,2);
if($str == "") $str = "n";
$finalFile .= "<ins>".str_pad ("$lines | ", 8, " ", STR_PAD_LEFT).$str."</ins>n";
$lines++;
break;
case 'd':
$str = substr($d,2);
if($str == "") $str = "n";
$finalFile .= "<del>".str_pad ("| ", 8, " ", STR_PAD_LEFT).$str."</del>n";
break;
case 'c':
$str = substr($d,2);
if($str == "") $str = "n";
if($d[0] == '<' )
{
$finalFile .= "<del>".str_pad ("| ", 8, " ", STR_PAD_LEFT).$str."</del>n";
}
else if($d[0] == '>' )
{
$finalFile .= "<ins>".str_pad ("$lines | ", 8, " ", STR_PAD_LEFT).$str."</ins>n";
$lines++;
}
break;
}
}
//Preparazione al posizionamento
switch($action['type'])
{
case 'd':
case 'c':
array_shift($orig);
$i++;
break;
}
//Mi posiziono alla fine della differenza
while($i <= $action['l12'])
{
array_shift($orig);
$i++;
}
}
while( ($r = array_shift($orig)))
{
$finalFile .= str_pad ("$lines | ", 8, " ", STR_PAD_LEFT).$r."n";
$lines++;
}
$res .= "<div id="difference" style="font-family:monospace;font-size:8.5pt;line-height:120%;margin-top:5px;">";
$res .= "<pre >";
//$res .= "//".shell_exec("diff $fullNamePath1 $fullNamePath2")."//";
$res .= $finalFile;
$res .= "</pre >";
$res .= "</div>";
return $res;
}
//*********************************************************************************//
//*********************************************************************************//
//*********************************************************************************//
private function retrieveDiffAction($diffRes, &$action)
{
$r=$diffRes[0];
$action['l11'] = $action['l12'] = $action['l21'] = $action['l22'] = 0;
array_shift($diffRes);// Rimuovo la riga appena letta
if( ($idxType=strpos ( $r , 'd')) )
{
$action['type']="d";
}
else if( ($idxType=strpos ( $r , 'c')) )
{
$action['type']="c";
}
else if( ($idxType=strpos ( $r , 'a')) )
{
$action['type']="a";
}
//Cerco la prima virgola
$idxComma=strpos ( $r , ',');
if(!$idxComma)
{
//Se la prima virgola non c'è ho un numero di linea prima e
//uno dopo
$action['l1n']=1;
$action['l2n']=1;
sscanf($r,"%d%c%d", $action['l11'], $action['type'], $action['l21']);
}
else if($idxComma < $idxType)
{
//Se la prima virgola e posizionata prima del type
//allora ho un due numeri di linea prima
$action['l1n']=2;
$idxComma=strpos ( $r , ',', $idxComma);
if(!$idxComma)
{
//qui ho un numero di linea dopo
$action['l2n']=1;
sscanf($r,"%d,%d%c%d", $action['l11'],$action['l12'], $action['type'], $action['l21']);
}
else
{
//qui ho due numeri di linea dopo
//qui ho un numero di linea dopo
$action['l2n']=1;
sscanf($r,"%d,%d%c%d,%d", $action['l11'],$action['l12'], $action['type'], $action['l21'], $action['l22']);
}
}
else
{
//Se la prima virgola e posizionata dopo il type
//allora ho un numero di linea prima
$action['l1n']=1;
$idxComma=strpos ( $r , ',', $idxComma);
if(!$idxComma)
{
//qui ho un numero di linea dopo
$action['l2n']=1;
sscanf($r,"%d%c%d", $action['l11'], $action['type'], $action['l21']);
}
else
{
//qui ho due numeri di linea dopo
//qui ho un numero di linea dopo
$action['l2n']=1;
sscanf($r,"%d%c%d,%d", $action['l11'], $action['type'], $action['l21'], $action['l22']);
}
}
//UNA VOLTA LETTA LA RIGA DELL'AZIONE RICAVO I DATI
$action['data'] = Array();
foreach($diffRes as $j => $r)
{
$exit=false;
$c0 = substr($r, 0, 1);
switch($action['type'])
{
case 'a':
if( $c0 != '>') $exit=true;
break;
case 'd':
if( $c0 != '<') $exit=true;
break;
case 'c':
if($c0 != '<' && $c0 != '>' && $c0 != '-') $exit=true;
break;
}
if($exit) break;
$action['data'][$j]= $r;
array_shift($diffRes);
}
return $diffRes;
}
//*********************************************************************************//
//*********************************************************************************//
//*********************************************************************************//
}
?>
<?php
class textEditor
{
//*********************************************************************************//
//*********************************************************************************//
//*********************************************************************************//
public function renderForm($POST, $uniqueID)
//The $uniqueID parameter needs to be used when you render two istance of the text editor
//into the same web page
{
global $INDEX_PHP;
$res = '';
//Check the existence of the file name
if(isset($POST["filename"]) && $POST["filename"]!='')$fullNamePath=$POST["filename"];
else
{
return "Invalid filename. (".$POST["filename"].")";
}
$filename = basename ($fullNamePath);
//check to see if the mime-type starts with 'text'
$finfo = finfo_open(FILEINFO_MIME);
$conType = finfo_file($finfo, $fullNamePath);
finfo_close($finfo);
if( !(substr( $conType, 0, 4)=='text' || substr($conType, 0, 19) == 'application/x-empty') )
{
return "
<script>
alert('File format not supported <".finfo_file($finfo, $fullNamePath).$filename.">');
window.location.href = '/$INDEX_PHP';
</script>";
}
//Load javscript function for Input File managment
$res .= "<script>";
$res .= $this->renderScript($POST,$uniqueID);
$res .= "</script>";
//READING THE WHOLE CONTENT FILE
$strFile = file_get_contents($fullNamePath);
$res .= "<div>";
$res .= "<textarea id="fileTextArea".$uniqueID."" style="width: 100%; font-size:8pt;">".$strFile."</textarea>";
$res .= "</div>";
return $res;
}
//*********************************************************************************//
//*********************************************************************************//
//*********************************************************************************//
private function renderScript($POST,$uniqueID)
{
$res = '';
$res .= "
$(document).ready(function()
{
var h = $(window).height();
if( h < $(document).height() ) h = $(document).height() ;
$('#fileTextArea".$uniqueID."').height( ( h - 70) );
});
";
return $res;
}
}
?>
<?php
$INDEX_PHP= "example.php";
include_once("class_textEditor.php");
include_once("class_diffTool.php");
$res = '';
$res .= "
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<linkhref="style.css" rel="stylesheet" type="text/css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js" ></script>
<title>Diff Tool</title>
</head>
<body>";
$tool = new diffTool;
$res .= $tool->renderDiffTool("file1.txt","file2.txt");
$res .= "</body>";
echo $res;
?>
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