<?php if (!defined('PmWiki')) exit();
/* Copyright 2004-2006 Patrick R. Michaud (pmichaud@pobox.com)
Slightly modified by Petko Yotov (2006) to accept a number of diffs per page.
This file is part of PmWiki; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version. See pmwiki.php for full details.
This script defines routines for displaying page revisions. It
replaces functions, defined in pagerev.php.
*/
$HandleActions['diff'] = 'HandleDiff';
$RecipeInfo['LimitDiffsPerPage']['Version'] = '2006-03-xx';
function LinkSuppress($pagename,$imap,$path,$title,$txt,$fmt=NULL)
{ return $txt; }
SDV($DiffShow['minor'],(@$_REQUEST['minor']!='n')?'y':'n');
SDV($DiffShow['source'],(@$_REQUEST['source']=='y')?'y':'n');
SDV($DiffMinorFmt, ($DiffShow['minor']=='y') ?
"<a href='{\$PageUrl}?action=diff&source=".$DiffShow['source']."&minor=n'>$[Hide minor edits]</a>" :
"<a href='{\$PageUrl}?action=diff&source=".$DiffShow['source']."&minor=y'>$[Show minor edits]</a>" );
SDV($DiffSourceFmt, ($DiffShow['source']=='y') ?
"<a href='{\$PageUrl}?action=diff&source=n&minor=".$DiffShow['minor']."'>$[Show changes to output]</a>" :
"<a href='{\$PageUrl}?action=diff&source=y&minor=".$DiffShow['minor']."'>$[Show changes to markup]</a>");
SDV($PageDiffFmt,"<h2 class='wikiaction'>$[{\$FullName} History]</h2>
<p>$DiffMinorFmt - $DiffSourceFmt</p>
");
SDV($DiffStartFmt,"
<div class='diffbox'><div class='difftime'>\$DiffTime
\$[by] <span class='diffauthor' title='\$DiffHost'>\$DiffAuthor</span> - \$DiffChangeSum</div>");
SDV($DiffDelFmt['a'],"
<div class='difftype'>\$[Deleted line \$DiffLines:]</div>
<div class='diffdel'>");
SDV($DiffDelFmt['c'],"
<div class='difftype'>\$[Changed line \$DiffLines from:]</div>
<div class='diffdel'>");
SDV($DiffAddFmt['d'],"
<div class='difftype'>\$[Added line \$DiffLines:]</div>
<div class='diffadd'>");
SDV($DiffAddFmt['c'],"</div>
<div class='difftype'>$[to:]</div>
<div class='diffadd'>");
SDV($DiffEndDelAddFmt,"</div>");
SDV($DiffEndFmt,"</div>");
SDV($DiffRestoreFmt,"
<div class='diffrestore'><a href='{\$PageUrl}?action=edit&restore=\$DiffId&preview=y'>$[Restore]</a></div>");
SDV($HandleActions['diff'], 'HandleDiff');
SDV($HandleAuth['diff'], 'read');
SDV($ActionTitleFmt['diff'], '| $[History]');
SDV($HTMLStylesFmt['diff'], "
.diffbox { width:570px; border-left:1px #999999 solid; margin-top:1.33em; }
.diffauthor { font-weight:bold; }
.diffchangesum { font-weight:bold; }
.difftime { font-family:verdana,sans-serif; font-size:66%;
background-color:#dddddd; }
.difftype { clear:both; font-family:verdana,sans-serif;
font-size:66%; font-weight:bold; }
.diffadd { border-left:5px #99ff99 solid; padding-left:5px; }
.diffdel { border-left:5px #ffff99 solid; padding-left:5px; }
.diffrestore { clear:both; font-family:verdana,sans-serif;
font-size:66%; margin:1.5em 0px; }
.diffmarkup { font-family:monospace; } ");
function PrintDiff($pagename) {
global $DiffShow,$DiffStartFmt,$TimeFmt,$DiffDelFmt,$DiffAddFmt,
$DiffEndDelAddFmt,$DiffEndFmt,$DiffRestoreFmt,$FmtV, $LinkFunctions,
$DiffCountPerPage;
SDV($DiffCountPerPage, 10);// 0 means unlimited
$diffstart = intval(@$_REQUEST['diffstart']);
$page = ReadPage($pagename);
if (!$page) return;
krsort($page); reset($page);
$lf = $LinkFunctions;
$LinkFunctions['http:'] = 'LinkSuppress';
$LinkFunctions['https:'] = 'LinkSuppress';
$j=0;// counter for diffstart
$diffmore=0; // are there more revisions?
foreach($page as $k=>$v) {
if (!preg_match("/^diff:(\d+):(\d+):?([^:]*)/",$k,$match)) continue;
if($j++<$diffstart) continue;
if($diffstart >=0 && $DiffCountPerPage != 0
&& $j > $diffstart+$DiffCountPerPage){$diffmore=1; break;}
$diffclass = $match[3];
if ($diffclass=='minor' && $DiffShow['minor']!='y') continue;
$diffgmt = $match[1]; $FmtV['$DiffTime'] = strftime($TimeFmt,$diffgmt);
$diffauthor = @$page["author:$diffgmt"];
if (!$diffauthor) @$diffauthor=$page["host:$diffgmt"];
if (!$diffauthor) $diffauthor="unknown";
$FmtV['$DiffChangeSum'] = htmlspecialchars(@$page["csum:$diffgmt"]);
$FmtV['$DiffHost'] = @$page["host:$diffgmt"];
$FmtV['$DiffAuthor'] = $diffauthor;
$FmtV['$DiffId'] = $k;
echo FmtPageName($DiffStartFmt,$pagename);
$difflines = explode("\n",$v."\n");
$in=array(); $out=array(); $dtype='';
foreach($difflines as $d) {
if ($d>'') {
if ($d[0]=='-' || $d[0]=='\\') continue;
if ($d[0]=='<') { $out[]=substr($d,2); continue; }//'out'.count($out).': ' .
if ($d[0]=='>') { $in[]=substr($d,2); continue; }//'in'.count($in).': '.
}
if (preg_match("/^(\\d+)(,(\\d+))?([adc])(\\d+)(,(\\d+))?/",
$dtype,$match)) {
if (@$match[7]>'') {
$lines='lines';
$count=$match[1].'-'.($match[1]+$match[7]-$match[5]);
} elseif ($match[3]>'') {
$lines='lines'; $count=$match[1].'-'.$match[3];
} else { $lines='line'; $count=$match[1]; }
if ($match[4]=='a' || $match[4]=='c') {
$txt = str_replace('line',$lines,$DiffDelFmt[$match[4]]);
$FmtV['$DiffLines'] = $count;
echo FmtPageName($txt,$pagename);
if ($DiffShow['source']=='y')
echo "<div class='diffmarkup'>",
str_replace("\n","<br />",htmlspecialchars(join("\n",$in))),
"</div>";
else echo MarkupToHTML($pagename,
preg_replace('/\\(:.*?:\\)/e',"Keep(PSS('$0'))",join("\n",$in)));
}
if ($match[4]=='d' || $match[4]=='c') {
$txt = str_replace('line',$lines,$DiffAddFmt[$match[4]]);
$FmtV['$DiffLines'] = $count;
echo FmtPageName($txt,$pagename);
if ($DiffShow['source']=='y')
echo "<div class='diffmarkup'>",
str_replace("\n","<br />",htmlspecialchars(join("\n",$out))),
"</div>";
else echo MarkupToHTML($pagename,
preg_replace('/\\(:.*?:\\)/e',"Keep(PSS('$0'))",join("\n",$out)));
}
echo FmtPageName($DiffEndDelAddFmt,$pagename);
}
$in=array(); $out=array(); $dtype=$d;
}
echo FmtPageName($DiffEndFmt,$pagename);
echo FmtPageName($DiffRestoreFmt,$pagename);
}
$diffprevnext = "";
if($diffstart>0) $diffprevnext .= "[[$pagename?action=diff&source={$DiffShow['source']}&minor={$DiffShow['minor']}&diffstart=".
max(0, $diffstart-$DiffCountPerPage)."|←$[Newer changes] ]] ";
if($diffstart>0 || $diffmore>0) $diffprevnext .= "[[$pagename?action=diff&source={$DiffShow['source']}&minor={$DiffShow['minor']}&diffstart=-1 | $[Show all] ]] ";
if($diffmore>0) $diffprevnext .= "[[$pagename?action=diff&source={$DiffShow['source']}&minor={$DiffShow['minor']}&diffstart=".
max(0, $j-1)." | $[Older changes]→]] ";
if($DiffCountPerPage>0 && $diffprevnext) echo MarkupToHTML($pagename, "\n$diffprevnext\n");
$LinkFunctions = $lf;
}
function HandleDiff($pagename, $auth='read') {
global $HandleDiffFmt, $PageStartFmt, $PageDiffFmt, $PageEndFmt;
$page = RetrieveAuthPage($pagename, $auth, true);
if (!$page) { Abort("?cannot diff $pagename"); }
PCache($pagename, $page);
SDV($HandleDiffFmt,array(&$PageStartFmt,
&$PageDiffFmt,"<div id='wikidiff'>", 'function:PrintDiff', '</div>',
&$PageEndFmt));
PrintFmt($pagename,$HandleDiffFmt);
}