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phpserialeditor.php
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phpserialeditor.php
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<?php
/**
* A serialized PHP value editor.
*
* This file helps edit values from a 2be database, which are often
* stored as serialized PHP. It's all self contained in this one file, including
* the graphics.
*
* 2be - an Enterprise PHP Application Framework
* Copyright (C) 2008-2011 Hunter Perrin.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Hunter can be contacted at hperrin@gmail.com
*
* @license http://www.gnu.org/licenses/agpl-3.0.html
* @author Hunter Perrin <hperrin@gmail.com>
* @copyright SciActive.com
* @link http://sciactive.com/
* @version 1.0
*/
// Set this to true if you don't trust your users. (And you most likely shouldn't!)
$secure_mode = true;
if (!empty($_REQUEST['type'])) {
try {
switch ($_REQUEST['type']) {
case 'serialized':
default:
$value = unserialize($_REQUEST['value']);
header("Content-Type: text/plain");
switch ($_REQUEST['language']) {
case 'yaml':
default:
$output = Spyc::YAMLDump($value, false, false, true);
break;
case 'json':
$output = json_indent(json_encode($value));
break;
case 'php':
$output = str_replace('stdClass::__set_state(', '(object) (', var_export($value, true));
break;
}
break;
case 'exported':
switch ($_REQUEST['language']) {
case 'yaml':
default:
$value = Spyc::YAMLLoadString($_REQUEST['value']);
break;
case 'json':
$value = json_decode($_REQUEST['value'], true);
break;
case 'php':
if ($secure_mode)
$value = 'I told you, PHP mode is disabled!';
else
$value = eval('return '.$_REQUEST['value'].';');
break;
}
header("Content-Type: text/plain");
$output = serialize($value);
break;
case 'favicon':
header("Content-Type: image/x-icon");
$output = get_fav_icon();
break;
case 'header':
header("Content-Type: image/png");
$output = get_header();
break;
}
} catch (Exception $e) {
$ouput = 'Error: '.$e->getMessage();
}
echo $output;
exit;
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Serialized PHP Editor</title>
<meta charset="UTF-8" />
<link href="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>?type=favicon" type="image/vnd.microsoft.icon" rel="icon">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<?php if ($secure_mode) { ?>
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/pnotify/1.3.1/jquery.pnotify.default.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/pnotify/1.3.1/jquery.pnotify.min.js"></script>
<?php } ?>
<style type="text/css">
textarea {
width: 100%;
border: 1px solid #333;
}
#diff_container {
width: 100%;
overflow: auto;
border: 1px solid #333;
}
#diff {
padding: .5em;
white-space: pre;
font-size: .8em;
font-family: monospace;
}
</style>
<script type="text/javascript">
$(function(){
var updating = false, original = "";
var diff = $("#diff"), output = $("#output");
var serialized = $("#serialized").on("change keyup", function(){
if (updating)
return;
original = serialized.val();
$.post("", {type: "serialized", "value": original, "language": $("input[name=language]:checked").val()}, function(data){
updating = true;
editor.val(data);
updating = false;
editor.change();
});
});
$("input[name=language]").on("change", function(){
serialized.trigger("change");
})
var editor = $("#editor").on("change keyup", function(){
if (updating)
return;
$.post("", {type: "exported", "value": editor.val(), "language": $("input[name=language]:checked").val()}, function(data){
updating = true;
output.val(data);
diff.html(pretty_php_serialized(WDiffString(original, data)));
updating = false;
});
});
serialized.trigger("change");
});
function pretty_php_serialized(serialized) {
serialized = serialized.replace(/<br\/?>/g, "").replace(/&([a-z0-9#]+);/gi, "**ent($1)ent**");
while (serialized.match(/\{[^\n]/)!==null)
serialized = serialized.replace(/\{([^\n])/g, "{\n$1");
while (serialized.match(/\}[^\n]/)!==null)
serialized = serialized.replace(/\}([^\n])/g, "}\n$1");
while (serialized.match(/[^\n]\}/)!==null)
serialized = serialized.replace(/([^\n])\}/g, "$1\n}");
while (serialized.match(/;[^\n]/)!==null)
serialized = serialized.replace(/;([^\n])/g, ";\n$1");
while (serialized.match(/\{\n\}/)!==null)
serialized = serialized.replace(/\{\n\}/g, "{}");
var cur_indent = 1;
var cur_entry_index = false;
var lines = serialized.split("\n");
serialized = "";
for (var i=0; i<lines.length; i++) {
var is_a_closer = lines[i].charAt(0) == "}";
if (is_a_closer) {
cur_indent--;
serialized += Array(cur_indent).join(" ")+lines[i]+"\n";
} else {
if (cur_entry_index)
serialized += Array(cur_indent).join(" ")+lines[i];
else
serialized += lines[i]+"\n";
cur_entry_index = !cur_entry_index;
}
if (lines[i].charAt(lines[i].length-1) == "{")
cur_indent++;
}
serialized = serialized.replace(/\*\*ent\(([a-z0-9#]+)\)ent\*\*/gi, "&$1;");
return serialized;
}
function do_example() {
var example = 'a:1:{s:13:"533616e6f0a3d";a:4:{s:4:"name";s:4:"Home";s:7:"buttons";a:34:{i:0;a:2:{s:9:"component";s:12:"com_calendar";s:6:"button";s:8:"calendar";}i:1;s:9:"separator";i:2;a:2:{s:9:"component";s:13:"com_configure";s:6:"button";s:6:"config";}i:3;s:9:"separator";i:4;a:2:{s:9:"component";s:11:"com_content";s:6:"button";s:10:"categories";}i:5;a:2:{s:9:"component";s:11:"com_content";s:6:"button";s:5:"pages";}i:6;a:2:{s:9:"component";s:11:"com_content";s:6:"button";s:8:"page_new";}i:7;s:9:"separator";i:8;a:2:{s:9:"component";s:12:"com_customer";s:6:"button";s:9:"customers";}i:9;a:2:{s:9:"component";s:12:"com_customer";s:6:"button";s:12:"customer_new";}i:10;s:9:"separator";i:11;a:2:{s:9:"component";s:12:"com_elfinder";s:6:"button";s:12:"file_manager";}i:12;s:9:"separator";i:13;a:2:{s:9:"component";s:14:"com_menueditor";s:6:"button";s:7:"entries";}i:14;a:2:{s:9:"component";s:14:"com_menueditor";s:6:"button";s:9:"entry_new";}i:15;s:9:"separator";i:16;a:2:{s:9:"component";s:11:"com_modules";s:6:"button";s:7:"modules";}i:17;a:2:{s:9:"component";s:11:"com_modules";s:6:"button";s:10:"module_new";}i:18;s:9:"separator";i:19;a:2:{s:9:"component";s:9:"com_plaza";s:6:"button";s:11:"getsoftware";}i:20;a:2:{s:9:"component";s:9:"com_plaza";s:6:"button";s:9:"installed";}i:21;s:9:"separator";i:22;a:2:{s:9:"component";s:11:"com_reports";s:6:"button";s:8:"rankings";}i:23;s:9:"separator";i:24;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:5:"sales";}i:25;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:8:"sale_new";}i:26;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:11:"countsheets";}i:27;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:14:"countsheet_new";}i:28;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:7:"receive";}i:29;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:7:"pending";}i:30;a:2:{s:9:"component";s:9:"com_sales";s:6:"button";s:9:"shipments";}i:31;s:9:"separator";i:32;a:2:{s:9:"component";s:8:"com_user";s:6:"button";s:10:"my_account";}i:33;a:2:{s:9:"component";s:8:"com_user";s:6:"button";s:6:"logout";}}s:12:"buttons_size";s:5:"large";s:7:"columns";a:3:{s:13:"533616e6f0a46";a:2:{s:4:"size";d:0.25;s:7:"widgets";a:2:{s:13:"533616e6f0975";a:3:{s:9:"component";s:9:"com_about";s:6:"widget";s:8:"newsfeed";s:7:"options";a:0:{}}s:13:"533616e6f0a08";a:3:{s:9:"component";s:11:"com_content";s:6:"widget";s:9:"quickpage";s:7:"options";a:0:{}}}}s:13:"533616e6f0a4e";a:2:{s:4:"size";d:0.333333333333329984160542380777769722044467926025390625;s:7:"widgets";a:2:{s:13:"533616e6f09b6";a:3:{s:9:"component";s:12:"com_calendar";s:6:"widget";s:6:"agenda";s:7:"options";a:0:{}}s:13:"533616e6f0a33";a:3:{s:9:"component";s:7:"com_hrm";s:6:"widget";s:7:"clockin";s:7:"options";a:0:{}}}}s:13:"533616e6f0a53";a:2:{s:4:"size";d:0.416666666666670015839457619222230277955532073974609375;s:7:"widgets";a:1:{s:13:"533616e6f09e0";a:3:{s:9:"component";s:13:"com_configure";s:6:"widget";s:7:"welcome";s:7:"options";a:0:{}}}}}}}';
$("#serialized").val(example).trigger("change");
}
<?php if ($secure_mode) { ?>
var stack = {"dir1": "up", "dir2": "left", "firstpos1": 25, "firstpos2": 25};
$.pnotify.defaults.stack = stack;
$.pnotify.defaults.addclass = 'stack-bottomright';
$(function(){
var n = $.pnotify({
title: "PHP Mode Disabled",
text: "PHP language mode has been disabled for security reasons.",
type: "info",
hide: false,
history: false,
styling: "bootstrap3",
nonblock: true,
nonblock_opacity: .2
}).click(function(){n.pnotify_remove()});
});
<?php } ?>
</script>
</head>
<body>
<div class="container">
<header class="page-header">
<div style="float: right; position: relative; top: -20px;">
<a href="http://2be.io" target="_blank">
<img src="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>?type=header" alt="2be Logo" style="border: none;" />
</a>
</div>
<h1>Serialized PHP Editor</h1>
</header>
<div class="form-group">
<label>Choose a language to use for editing</label>
<div>
<div class="btn-group" data-toggle="buttons">
<label class="btn btn-default active"><input type="radio" name="language" value="yaml" checked="checked" /> YAML</label>
<label class="btn btn-default"><input type="radio" name="language" value="json" /> JSON</label>
<label class="btn btn-default<?php if ($secure_mode) { ?> disabled<?php } ?>"><input type="radio" name="language" value="php" <?php if ($secure_mode) { ?>disabled="disabled"<?php } ?> /> PHP</label>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-6">
1. Paste in serialized PHP here: <small>(<a href="javascript:void(0);" onclick="do_example();">example</a>)</small><br />
<textarea rows="6" cols="30" id="serialized" style="height: 100px;"></textarea>
</div>
<div class="col-sm-6">
3. The new serialized PHP will appear here:<br />
<textarea rows="6" cols="30" id="output" style="height: 100px;"></textarea>
</div>
</div>
<div class="row">
<div class="col-sm-6">
2. Then edit the value here:<br />
<textarea rows="20" cols="30" id="editor" style="height: 500px;"></textarea>
</div>
<div class="col-sm-6">
4. A colored diff will show here:<br />
<div id="diff_container" style="height: 500px;">
<div id="diff"></div>
</div>
</div>
</div>
<div>
<a href="https://github.com/sciactive/2be-extras/blob/master/phpserialeditor.php">This tool is open source.</a>
</div>
</div>
</body>
<script type="text/javascript">
/*
Name: wDiff.js
Version: 0.9.9 (October 10, 2010)
Info: http://en.wikipedia.org/wiki/User:Cacycle/diff
Code: http://en.wikipedia.org/wiki/User:Cacycle/diff.js
JavaScript diff algorithm by [[en:User:Cacycle]] (http://en.wikipedia.org/wiki/User_talk:Cacycle).
Outputs html/css-formatted new text with highlighted deletions, inserts, and block moves.
For newline highlighting the following style rules have to be added to the document:
.wDiffParagraph:before { content: "¶"; };
The program uses cross-browser code and should work with all modern browsers. It has been tested with:
* Mozilla Firefox 1.5.0.1
* Mozilla SeaMonkey 1.0
* Opera 8.53
* Internet Explorer 6.0.2900.2180
* Internet Explorer 7.0.5730.11
This program is also compatible with Greasemonkey
An implementation of the word-based algorithm from:
Communications of the ACM 21(4):264 (1978)
http://doi.acm.org/10.1145/359460.359467
With the following additional feature:
* Word types have been optimized for MediaWiki source texts
* Additional post-pass 5 code for resolving islands caused by adding
two common words at the end of sequences of common words
* Additional detection of block borders and color coding of moved blocks and their original position
* Optional "intelligent" omission of unchanged parts from the output
This code is used by the MediaWiki in-browser text editors [[en:User:Cacycle/editor]] and [[en:User:Cacycle/wikEd]]
and the enhanced diff view tool wikEdDiff [[en:User:Cacycle/wikEd]].
Usage: var htmlText = WDiffString(oldText, newText);
This code has been released into the public domain.
Datastructures (abbreviations from publication):
text: an object that holds all text related datastructures
.newWords: consecutive words of the new text (N)
.oldWords: consecutive words of the old text (O)
.newToOld: array pointing to corresponding word number in old text (NA)
.oldToNew: array pointing to corresponding word number in new text (OA)
.message: output message for testing purposes
symbol table:
symbols[word]: associative array (object) of detected words for passes 1 - 3, points to symbol[i]
symbol[i]: array of objects that hold word counters and pointers:
.newCtr: new word occurences counter (NC)
.oldCtr: old word occurences counter (OC)
.toNew: first word occurrence in new text, points to text.newWords[i]
.toOld: last word occurrence in old text, points to text.oldWords[i]
block: an object that holds block move information
blocks indexed after new text:
.newStart: new text word number of start of this block
.newLength: element number of this block including non-words
.newWords: true word number of this block
.newNumber: corresponding block index in old text
.newBlock: moved-block-number of a block that has been moved here
.newLeft: moved-block-number of a block that has been moved from this border leftwards
.newRight: moved-block-number of a block that has been moved from this border rightwards
.newLeftIndex: index number of a block that has been moved from this border leftwards
.newRightIndex: index number of a block that has been moved from this border rightwards
blocks indexed after old text:
.oldStart: word number of start of this block
.oldToNew: corresponding new text word number of start
.oldLength: element number of this block including non-words
.oldWords: true word number of this block
*/
// css for change indicators
if (typeof(wDiffStyleDelete) == 'undefined') { window.wDiffStyleDelete = 'font-weight: normal; text-decoration: none; color: #fff; background-color: #990033;'; }
if (typeof(wDiffStyleInsert) == 'undefined') { window.wDiffStyleInsert = 'font-weight: normal; text-decoration: none; color: #fff; background-color: #009933;'; }
if (typeof(wDiffStyleMoved) == 'undefined') { window.wDiffStyleMoved = 'font-weight: bold; color: #000; vertical-align: text-bottom; font-size: xx-small; padding: 0; border: solid 1px;'; }
if (typeof(wDiffStyleBlock) == 'undefined') { window.wDiffStyleBlock = [
'color: #000; background-color: #ffff80;',
'color: #000; background-color: #c0ffff;',
'color: #000; background-color: #ffd0f0;',
'color: #000; background-color: #ffe080;',
'color: #000; background-color: #aaddff;',
'color: #000; background-color: #ddaaff;',
'color: #000; background-color: #ffbbbb;',
'color: #000; background-color: #d8ffa0;',
'color: #000; background-color: #d0d0d0;'
]; }
// html for change indicators, {number} is replaced by the block number
// {block} is replaced by the block style, class and html comments are important for shortening the output
if (typeof(wDiffHtmlMovedRight) == 'undefined') { window.wDiffHtmlMovedRight = '<input class="wDiffHtmlMovedRight" type="button" value=">" style="' + wDiffStyleMoved + ' {block}"><!--wDiffHtmlMovedRight-->'; }
if (typeof(wDiffHtmlMovedLeft) == 'undefined') { window.wDiffHtmlMovedLeft = '<input class="wDiffHtmlMovedLeft" type="button" value="<" style="' + wDiffStyleMoved + ' {block}"><!--wDiffHtmlMovedLeft-->'; }
if (typeof(wDiffHtmlBlockStart) == 'undefined') { window.wDiffHtmlBlockStart = '<span class="wDiffHtmlBlock" style="{block}">'; }
if (typeof(wDiffHtmlBlockEnd) == 'undefined') { window.wDiffHtmlBlockEnd = '</span><!--wDiffHtmlBlock-->'; }
if (typeof(wDiffHtmlDeleteStart) == 'undefined') { window.wDiffHtmlDeleteStart = '<span class="wDiffHtmlDelete" style="' + wDiffStyleDelete + '">'; }
if (typeof(wDiffHtmlDeleteEnd) == 'undefined') { window.wDiffHtmlDeleteEnd = '</span><!--wDiffHtmlDelete-->'; }
if (typeof(wDiffHtmlInsertStart) == 'undefined') { window.wDiffHtmlInsertStart = '<span class="wDiffHtmlInsert" style="' + wDiffStyleInsert + '">'; }
if (typeof(wDiffHtmlInsertEnd) == 'undefined') { window.wDiffHtmlInsertEnd = '</span><!--wDiffHtmlInsert-->'; }
// minimal number of real words for a moved block (0 for always displaying block move indicators)
if (typeof(wDiffBlockMinLength) == 'undefined') { window.wDiffBlockMinLength = 3; }
// exclude identical sequence starts and endings from change marking
if (typeof(wDiffWordDiff) == 'undefined') { window.wDiffWordDiff = true; }
// enable recursive diff to resolve problematic sequences
if (typeof(wDiffRecursiveDiff) == 'undefined') { window.wDiffRecursiveDiff = true; }
// enable block move display
if (typeof(wDiffShowBlockMoves) == 'undefined') { window.wDiffShowBlockMoves = true; }
// remove unchanged parts from final output
// characters before diff tag to search for previous heading, paragraph, line break, cut characters
if (typeof(wDiffHeadingBefore) == 'undefined') { window.wDiffHeadingBefore = 1500; }
if (typeof(wDiffParagraphBefore) == 'undefined') { window.wDiffParagraphBefore = 1500; }
if (typeof(wDiffLineBeforeMax) == 'undefined') { window.wDiffLineBeforeMax = 1000; }
if (typeof(wDiffLineBeforeMin) == 'undefined') { window.wDiffLineBeforeMin = 500; }
if (typeof(wDiffBlankBeforeMax) == 'undefined') { window.wDiffBlankBeforeMax = 1000; }
if (typeof(wDiffBlankBeforeMin) == 'undefined') { window.wDiffBlankBeforeMin = 500; }
if (typeof(wDiffCharsBefore) == 'undefined') { window.wDiffCharsBefore = 500; }
// characters after diff tag to search for next heading, paragraph, line break, or characters
if (typeof(wDiffHeadingAfter) == 'undefined') { window.wDiffHeadingAfter = 1500; }
if (typeof(wDiffParagraphAfter) == 'undefined') { window.wDiffParagraphAfter = 1500; }
if (typeof(wDiffLineAfterMax) == 'undefined') { window.wDiffLineAfterMax = 1000; }
if (typeof(wDiffLineAfterMin) == 'undefined') { window.wDiffLineAfterMin = 500; }
if (typeof(wDiffBlankAfterMax) == 'undefined') { window.wDiffBlankAfterMax = 1000; }
if (typeof(wDiffBlankAfterMin) == 'undefined') { window.wDiffBlankAfterMin = 500; }
if (typeof(wDiffCharsAfter) == 'undefined') { window.wDiffCharsAfter = 500; }
// maximal fragment distance to join close fragments
if (typeof(wDiffFragmentJoin) == 'undefined') { window.wDiffFragmentJoin = 1000; }
if (typeof(wDiffOmittedChars) == 'undefined') { window.wDiffOmittedChars = '…'; }
if (typeof(wDiffOmittedLines) == 'undefined') { window.wDiffOmittedLines = '<hr style="height: 2px; margin: 1em 10%;">'; }
if (typeof(wDiffNoChange) == 'undefined') { window.wDiffNoChange = '<hr style="height: 2px; margin: 1em 20%;">'; }
// compatibility fix for old name of main function
window.StringDiff = window.WDiffString;
// WDiffString: main program
// input: oldText, newText, strings containing the texts
// returns: html diff
window.WDiffString = function(oldText, newText) {
// IE / Mac fix
oldText = oldText.replace(/\r\n?/g, '\n');
newText = newText.replace(/\r\n?/g, '\n');
var text = {};
text.newWords = [];
text.oldWords = [];
text.newToOld = [];
text.oldToNew = [];
text.message = '';
var block = {};
var outText = '';
// trap trivial changes: no change
if (oldText == newText) {
outText = newText;
outText = WDiffEscape(outText);
outText = WDiffHtmlFormat(outText);
return(outText);
}
// trap trivial changes: old text deleted
if ( (oldText == null) || (oldText.length == 0) ) {
outText = newText;
outText = WDiffEscape(outText);
outText = WDiffHtmlFormat(outText);
outText = wDiffHtmlInsertStart + outText + wDiffHtmlInsertEnd;
return(outText);
}
// trap trivial changes: new text deleted
if ( (newText == null) || (newText.length == 0) ) {
outText = oldText;
outText = WDiffEscape(outText);
outText = WDiffHtmlFormat(outText);
outText = wDiffHtmlDeleteStart + outText + wDiffHtmlDeleteEnd;
return(outText);
}
// split new and old text into words
WDiffSplitText(oldText, newText, text);
// calculate diff information
WDiffText(text);
//detect block borders and moved blocks
WDiffDetectBlocks(text, block);
// process diff data into formatted html text
outText = WDiffToHtml(text, block);
// IE fix
outText = outText.replace(/> ( *)</g, '> $1<');
return(outText);
};
// WDiffSplitText: split new and old text into words
// input: oldText, newText, strings containing the texts
// changes: text.newWords and text.oldWords, arrays containing the texts in arrays of words
window.WDiffSplitText = function(oldText, newText, text) {
// convert strange spaces
oldText = oldText.replace(/[\t\u000b\u00a0\u2028\u2029]+/g, ' ');
newText = newText.replace(/[\t\u000b\u00a0\u2028\u2029]+/g, ' ');
// split old text into words
// / | | | | | | | | | | | | | | /
var pattern = /[\w]+|\[\[|\]\]|\{\{|\}\}|\n+| +|&\w+;|'''|''|=+|\{\||\|\}|\|\-|./g;
var result;
do {
result = pattern.exec(oldText);
if (result != null) {
text.oldWords.push(result[0]);
}
} while (result != null);
// split new text into words
do {
result = pattern.exec(newText);
if (result != null) {
text.newWords.push(result[0]);
}
} while (result != null);
return;
};
// WDiffText: calculate diff information
// input: text.newWords and text.oldWords, arrays containing the texts as arrays of words
// optionally for recursive calls: newStart, newEnd, oldStart, oldEnd, recursionLevel
// changes: text.newToOld and text.oldToNew, arrays pointing to corresponding words
window.WDiffText = function(text, newStart, newEnd, oldStart, oldEnd, recursionLevel) {
var symbol = [];
var symbols = {};
// set defaults
if (typeof(newStart) == 'undefined') { newStart = 0; }
if (typeof(newEnd) == 'undefined') { newEnd = text.newWords.length; }
if (typeof(oldStart) == 'undefined') { oldStart = 0; }
if (typeof(oldEnd) == 'undefined') { oldEnd = text.oldWords.length; }
if (typeof(recursionLevel) == 'undefined') { recursionLevel = 0; }
// limit recursion depth
if (recursionLevel > 10) {
return;
}
//
// pass 1: Parse new text into symbol table
//
for (var i = newStart; i < newEnd; i ++) {
var word = text.newWords[i];
// preserve the native method
if (word.indexOf('hasOwnProperty') == 0) {
word = word.replace(/^(hasOwnProperty_*)$/, '$1_');
}
// add new entry to symbol table
if (symbols.hasOwnProperty(word) == false) {
var last = symbol.length;
symbols[word] = last;
symbol[last] = { newCtr: 1, oldCtr: 0, toNew: i, toOld: null };
}
// or update existing entry
else {
// increment word counter for new text
var hashToArray = symbols[word];
symbol[hashToArray].newCtr ++;
}
}
//
// pass 2: parse old text into symbol table
//
for (var i = oldStart; i < oldEnd; i ++) {
var word = text.oldWords[i];
// preserve the native method
if (word.indexOf('hasOwnProperty') == 0) {
word = word.replace(/^(hasOwnProperty_*)$/, '$1_');
}
// add new entry to symbol table
if (symbols.hasOwnProperty(word) == false) {
var last = symbol.length;
symbols[word] = last;
symbol[last] = { newCtr: 0, oldCtr: 1, toNew: null, toOld: i };
}
// or update existing entry
else {
// increment word counter for old text
var hashToArray = symbols[word];
symbol[hashToArray].oldCtr ++;
// add word number for old text
symbol[hashToArray].toOld = i;
}
}
//
// pass 3: connect unique words
//
for (var i = 0; i < symbol.length; i ++) {
// find words in the symbol table that occur only once in both versions
if ( (symbol[i].newCtr == 1) && (symbol[i].oldCtr == 1) ) {
var toNew = symbol[i].toNew;
var toOld = symbol[i].toOld;
// do not use spaces as unique markers
if (/^\s+$/.test(text.newWords[toNew]) == false) {
// connect from new to old and from old to new
text.newToOld[toNew] = toOld;
text.oldToNew[toOld] = toNew;
}
}
}
//
// pass 4: connect adjacent identical words downwards
//
for (var i = newStart; i < newEnd - 1; i ++) {
// find already connected pairs
if (text.newToOld[i] != null) {
var j = text.newToOld[i];
// check if the following words are not yet connected
if ( (text.newToOld[i + 1] == null) && (text.oldToNew[j + 1] == null) ) {
// connect if the following words are the same
if (text.newWords[i + 1] == text.oldWords[j + 1]) {
text.newToOld[i + 1] = j + 1;
text.oldToNew[j + 1] = i + 1;
}
}
}
}
//
// pass 5: connect adjacent identical words upwards
//
for (var i = newEnd - 1; i > newStart; i --) {
// find already connected pairs
if (text.newToOld[i] != null) {
var j = text.newToOld[i];
// check if the preceeding words are not yet connected
if ( (text.newToOld[i - 1] == null) && (text.oldToNew[j - 1] == null) ) {
// connect if the preceeding words are the same
if ( text.newWords[i - 1] == text.oldWords[j - 1] ) {
text.newToOld[i - 1] = j - 1;
text.oldToNew[j - 1] = i - 1;
}
}
}
}
//
// "pass" 6: recursively diff still unresolved regions downwards
//
if (wDiffRecursiveDiff == true) {
var i = newStart;
var j = oldStart;
while (i < newEnd) {
if (text.newToOld[i - 1] != null) {
j = text.newToOld[i - 1] + 1;
}
// check for the start of an unresolved sequence
if ( (text.newToOld[i] == null) && (text.oldToNew[j] == null) ) {
// determine the ends of the sequences
var iStart = i;
var iEnd = i;
while ( (text.newToOld[iEnd] == null) && (iEnd < newEnd) ) {
iEnd ++;
}
var iLength = iEnd - iStart;
var jStart = j;
var jEnd = j;
while ( (text.oldToNew[jEnd] == null) && (jEnd < oldEnd) ) {
jEnd ++;
}
var jLength = jEnd - jStart;
// recursively diff the unresolved sequence
if ( (iLength > 0) && (jLength > 0) ) {
if ( (iLength > 1) || (jLength > 1) ) {
if ( (iStart != newStart) || (iEnd != newEnd) || (jStart != oldStart) || (jEnd != oldEnd) ) {
WDiffText(text, iStart, iEnd, jStart, jEnd, recursionLevel + 1);
}
}
}
i = iEnd;
}
else {
i ++;
}
}
}
//
// "pass" 7: recursively diff still unresolved regions upwards
//
if (wDiffRecursiveDiff == true) {
var i = newEnd - 1;
var j = oldEnd - 1;
while (i >= newStart) {
if (text.newToOld[i + 1] != null) {
j = text.newToOld[i + 1] - 1;
}
// check for the start of an unresolved sequence
if ( (text.newToOld[i] == null) && (text.oldToNew[j] == null) ) {
// determine the ends of the sequences
var iStart = i;
var iEnd = i + 1;
while ( (text.newToOld[iStart - 1] == null) && (iStart >= newStart) ) {
iStart --;
}
if (iStart < 0) {
iStart = 0;
}
var iLength = iEnd - iStart;
var jStart = j;
var jEnd = j + 1;
while ( (text.oldToNew[jStart - 1] == null) && (jStart >= oldStart) ) {
jStart --;
}
if (jStart < 0) {
jStart = 0;
}
var jLength = jEnd - jStart;
// recursively diff the unresolved sequence
if ( (iLength > 0) && (jLength > 0) ) {
if ( (iLength > 1) || (jLength > 1) ) {
if ( (iStart != newStart) || (iEnd != newEnd) || (jStart != oldStart) || (jEnd != oldEnd) ) {
WDiffText(text, iStart, iEnd, jStart, jEnd, recursionLevel + 1);
}
}
}
i = iStart - 1;
}
else {
i --;
}
}
}
return;
};
// WDiffToHtml: process diff data into formatted html text
// input: text.newWords and text.oldWords, arrays containing the texts in arrays of words
// text.newToOld and text.oldToNew, arrays pointing to corresponding words
// block data structure
// returns: outText, a html string
window.WDiffToHtml = function(text, block) {
var outText = text.message;
var blockNumber = 0;
var i = 0;
var j = 0;
var movedAsInsertion;
// cycle through the new text
do {
var movedIndex = [];
var movedBlock = [];
var movedLeft = [];
var blockText = '';
var identText = '';
var delText = '';
var insText = '';
var identStart = '';
// check if a block ends here and finish previous block
if (movedAsInsertion != null) {
if (movedAsInsertion == false) {
identStart += wDiffHtmlBlockEnd;
}
else {
identStart += wDiffHtmlInsertEnd;
}
movedAsInsertion = null;
}
// detect block boundary
if ( (text.newToOld[i] != j) || (blockNumber == 0 ) ) {
if ( ( (text.newToOld[i] != null) || (i >= text.newWords.length) ) && ( (text.oldToNew[j] != null) || (j >= text.oldWords.length) ) ) {
// block moved right
var moved = block.newRight[blockNumber];
if (moved > 0) {
var index = block.newRightIndex[blockNumber];
movedIndex.push(index);
movedBlock.push(moved);
movedLeft.push(false);
}
// block moved left
moved = block.newLeft[blockNumber];
if (moved > 0) {
var index = block.newLeftIndex[blockNumber];
movedIndex.push(index);
movedBlock.push(moved);
movedLeft.push(true);
}
// check if a block starts here
moved = block.newBlock[blockNumber];
if (moved > 0) {
// mark block as inserted text
if (block.newWords[blockNumber] < wDiffBlockMinLength) {
identStart += wDiffHtmlInsertStart;
movedAsInsertion = true;
}
// mark block by color
else {
if (moved > wDiffStyleBlock.length) {
moved = wDiffStyleBlock.length;
}
identStart += WDiffHtmlCustomize(wDiffHtmlBlockStart, moved - 1);
movedAsInsertion = false;
}
}
if (i >= text.newWords.length) {
i ++;
}
else {
j = text.newToOld[i];
blockNumber ++;
}
}
}
// get the correct order if moved to the left as well as to the right from here
if (movedIndex.length == 2) {
if (movedIndex[0] > movedIndex[1]) {
movedIndex.reverse();
movedBlock.reverse();
movedLeft.reverse();
}
}
// handle left and right block moves from this position
for (var m = 0; m < movedIndex.length; m ++) {
// insert the block as deleted text
if (block.newWords[ movedIndex[m] ] < wDiffBlockMinLength) {
var movedStart = block.newStart[ movedIndex[m] ];
var movedLength = block.newLength[ movedIndex[m] ];
var str = '';
for (var n = movedStart; n < movedStart + movedLength; n ++) {
str += text.newWords[n];
}
str = WDiffEscape(str);
str = str.replace(/\n/g, '<span class="wDiffParagraph"></span><br>');
blockText += wDiffHtmlDeleteStart + str + wDiffHtmlDeleteEnd;
}
// add a placeholder / move direction indicator
else {
if (movedBlock[m] > wDiffStyleBlock.length) {
movedBlock[m] = wDiffStyleBlock.length;
}
if (movedLeft[m]) {
blockText += WDiffHtmlCustomize(wDiffHtmlMovedLeft, movedBlock[m] - 1);
}
else {
blockText += WDiffHtmlCustomize(wDiffHtmlMovedRight, movedBlock[m] - 1);
}
}
}
// collect consecutive identical text
while ( (i < text.newWords.length) && (j < text.oldWords.length) ) {
if ( (text.newToOld[i] == null) || (text.oldToNew[j] == null) ) {
break;
}
if (text.newToOld[i] != j) {
break;
}
identText += text.newWords[i];
i ++;
j ++;
}
// collect consecutive deletions
while ( (text.oldToNew[j] == null) && (j < text.oldWords.length) ) {
delText += text.oldWords[j];
j ++;
}
// collect consecutive inserts
while ( (text.newToOld[i] == null) && (i < text.newWords.length) ) {
insText += text.newWords[i];
i ++;
}
// remove leading and trailing similarities between delText and ins from highlighting
var preText = '';
var postText = '';
if (wDiffWordDiff) {
if ( (delText != '') && (insText != '') ) {
// remove leading similarities
while ( delText.charAt(0) == insText.charAt(0) && (delText != '') && (insText != '') ) {
preText = preText + delText.charAt(0);
delText = delText.substr(1);
insText = insText.substr(1);
}
// remove trailing similarities
while ( delText.charAt(delText.length - 1) == insText.charAt(insText.length - 1) && (delText != '') && (insText != '') ) {
postText = delText.charAt(delText.length - 1) + postText;
delText = delText.substr(0, delText.length - 1);
insText = insText.substr(0, insText.length - 1);
}
}
}
// output the identical text, deletions and inserts
// moved from here indicator
if (blockText != '') {
outText += blockText;
}
// identical text
if (identText != '') {
outText += identStart + WDiffEscape(identText);
}
outText += preText;
// deleted text
if (delText != '') {
delText = wDiffHtmlDeleteStart + WDiffEscape(delText) + wDiffHtmlDeleteEnd;
delText = delText.replace(/\n/g, '<span class="wDiffParagraph"></span><br>');
outText += delText;
}
// inserted text
if (insText != '') {
insText = wDiffHtmlInsertStart + WDiffEscape(insText) + wDiffHtmlInsertEnd;
insText = insText.replace(/\n/g, '<span class="wDiffParagraph"></span><br>');
outText += insText;
}
outText += postText;
} while (i <= text.newWords.length);
outText += '\n';
outText = WDiffHtmlFormat(outText);
return(outText);
};
// WDiffEscape: replaces html-sensitive characters in output text with character entities
window.WDiffEscape = function(text) {
text = text.replace(/&/g, '&');
text = text.replace(/</g, '<');
text = text.replace(/>/g, '>');
text = text.replace(/"/g, '"');
return(text);
};
// HtmlCustomize: customize indicator html: replace {number} with the block number, {block} with the block style
window.WDiffHtmlCustomize = function(text, block) {
text = text.replace(/\{number\}/, block);
text = text.replace(/\{block\}/, wDiffStyleBlock[block]);
return(text);
};
// HtmlFormat: replaces newlines and multiple spaces in text with html code
window.WDiffHtmlFormat = function(text) {
text = text.replace(/ {2}/g, ' ');
text = text.replace(/\n/g, '<br>');
return(text);
};
// WDiffDetectBlocks: detect block borders and moved blocks
// input: text object, block object
window.WDiffDetectBlocks = function(text, block) {
block.oldStart = [];
block.oldToNew = [];
block.oldLength = [];