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wikilib.php
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<?php
// Copyright 2003-2022 Won-Kyu Park <wkpark at kldp.org> all rights reserved.
// distributable under GPL see COPYING
//
// many codes are imported from the MoinMoin
// some codes are reused from the Phiki
//
// * MoinMoin is a python based wiki clone based on the PikiPiki
// by Ju"rgen Hermann <jhs at web.de>
// * PikiPiki is a python based wiki clone by MartinPool
// * Phiki is a php based wiki clone based on the MoinMoin
// by Fred C. Yankowski <fcy at acm.org>
//
function _preg_escape($val) {
return preg_replace('/([\$\^\.\[\]\{\}\|\(\)\+\*\/\\\\!\?]{1})/','\\\\\1',$val);
}
function _preg_search_escape($val) {
return preg_replace('/([\/]{1})/','\\\\\1',$val);
}
function _mkdir_p($target,$mode=0777) {
// from php.net/mkdir user contributed notes
if (file_exists($target)) {
if (!is_dir($target)) return false;
else return true;
}
// recursivly create dirs.
return (_mkdir_p(dirname($target),$mode) and mkdir($target,$mode));
}
/**
* Check double slashes in the REQUEST_URI
* and try to get the PATH_INFO or parse the PHP_SELF.
*
* @author Won-Kyu Park <[email protected]>
* @since 2015/12/14
* @since 1.2.5
*
* @return string
*/
function get_pathinfo() {
if (!isset($_SERVER['PATH_INFO'])) {
// the PATH_INFO not available.
// try to get the PATH_INFO from the PHP_SELF.
$path_parts = explode('/', $_SERVER['PHP_SELF']);
// remove all real path parts from PHP_SELF
$root = $_SERVER['DOCUMENT_ROOT'];
$path = $root;
foreach ($path_parts as $k=>$part) {
if ($part === '')
continue;
$path .= '/'.$part;
if (file_exists($path))
unset($path_parts[$k]);
else
break;
}
// combine remaining parts
$_SERVER['PATH_INFO'] = implode('/', $path_parts);
}
// if REQUEST_URI is not available.
if (!isset($_SERVER['REQUEST_URI']))
return $_SERVER['PATH_INFO'];
// check double slashes in the REQUEST_URI if it available
//
// from MediaWikiSrc:WebRequest.php source code
// by Apache 2.x, double slashes are converted to single slashes.
// and PATH_INFO is mangled due to https://bugs.php.net/bug.php?id=31892
$uri = $_SERVER['REQUEST_URI'];
if (($p = strpos($uri, '?')) !== false) {
// remove the query string part.
$uri = substr($uri, 0, $p);
}
// rawurldecode REQUEST_URI
$decoded_uri = rawurldecode($uri);
if (strpos($decoded_uri, '//') === false)
return $_SERVER['PATH_INFO'];
return guess_pathinfo($decoded_uri);
}
/**
* Try to get PATH_INFO from the REQUEST_URI
*
* @author Won-Kyu Park <[email protected]>
* @since 2015/12/14
* @since 1.2.5
*
* @return string
*/
function guess_pathinfo($decoded_uri) {
// try to get PATH_INFO from the REQUEST_URI
// $uri = rawurldecode($_SERVER['REQUEST_URI']);
// split all parts of REQUEST_URI.
$parts = preg_split('@(/)@', $decoded_uri, -1, PREG_SPLIT_DELIM_CAPTURE);
// /foo//bar/foo => '','/','foo','/','','/','bar','/','foo'
// try to get the PATH_INFO path parts
if ($_SERVER['PATH_INFO'] == '/') {
$pos = count($parts) - 1;
} else {
$path = explode('/', $_SERVER['PATH_INFO']);
// search unmatch REQUEST_URI part
$pos = count($parts) - 1;
for (; $pos > 0; $pos--) {
if ($parts[$pos] == '' || $parts[$pos] == '/')
continue;
$part = end($path);
if ($parts[$pos] != $part)
break;
array_pop($path);
}
}
// skip all path components
for (; $pos > 0; $pos--) {
if ($parts[$pos] == '' || $parts[$pos] == '/')
continue;
else
break;
}
// remove non path components.
for (; $pos > 0; $pos--)
unset($parts[$pos]);
// merge all path components.
return implode('', $parts);
}
function get_scriptname() {
// Return full URL of current page.
// $_SERVER["SCRIPT_NAME"] has bad value under CGI mode
// set 'cgi.fix_pathinfo=1' in the php.ini under
// apache 2.0.x + php4.2.x Win32
// check mod_rewrite
if (strpos($_SERVER['REQUEST_URI'],$_SERVER['SCRIPT_NAME'])===false) {
if ($_SERVER['REQUEST_URI'][0] == '/' and ($p = strpos($_SERVER['REQUEST_URI'], '/', 1)) !== false) {
$prefix = substr($_SERVER['REQUEST_URI'], 0, $p);
if (($p = strpos($_SERVER['SCRIPT_NAME'], $prefix)) === 0)
return $prefix;
}
return '';
}
return $_SERVER['SCRIPT_NAME'];
}
/**
* get the number of lines in a file
*
* @author [email protected]
* @since 2010/09/13
*
*/
function get_file_lines($filename) {
$fp = fopen($filename, 'r');
if (!is_resource($fp)) return 0;
// test \n or \r or \r\n
$i = 0;
while(($test = fgets($fp, 4096)) and !preg_match("/(\r|\r\n|\n)$/", $test, $match)) $i++;
$i = 1;
$bsz = 1024 * 8;
if (isset($match[1])) {
while ($chunk = fread($fp, $bsz))
$i += substr_count($chunk, $match[1]);
}
fclose($fp);
return $i;
}
/**
* counting add/del lines of a given diff
*
* @author [email protected]
* @since 2015/06/08
* @param string $diff - diff -u output
* @return array - return added/deleted lines
*/
function diffcount_simple($diff) {
$retval = &$params['retval'];
$lines = explode("\n", $diff);
$lsz = sizeof($lines);
$add = 0;
$del = 0;
for ($i = 0; $i < $lsz; $i++) {
$marker = $lines[$i][0];
if (!in_array($marker, array('-','+'))) {
continue;
}
if ($marker == '-')
$del++;
else
$add++;
}
return array($add, $del, 0, 0);
}
/**
* counting add/del lines and chars of a given diff
*
* @author [email protected]
* @since 2015/06/08
* @param string $diff - diff -u output
* @return array - return added/deleted chars and lines
*/
function diffcount_lines($diff, $charset) {
$lines = explode("\n", $diff);
$lsz = sizeof($lines);
if ($lines[$lsz - 1] == '') {
// trash last empty line
array_pop($lines);
$lsz--;
}
$add = 0;
$del = 0;
$add_chars = 0;
$del_chars = 0;
$minorfix = true;
$orig = array();
$new = array();
$om = false;
for ($i = 0; $i < $lsz; $i++) {
$line = &$lines[$i];
if (!isset($line[0])) break;
$mark = $line[0];
if (!$om && $mark == '-' && isset($line[3]) && substr($line, 0, 4) == '--- ') {
// trash first --- blah\n+++ blah\n lines
$i++;
continue;
}
$line = substr($line, 1);
if ($mark == '@') {
continue;
} else if ($mark == '-') {
$om = true;
$orig[] = $line;
$del++;
continue;
} else if ($mark == '+') {
$om = true;
$new[] = $line;
$add++;
continue;
} else if ($om) {
$om = false;
$diffchars = diffcount_chars($orig, $new, $charset);
if ($diffchars === false) {
// simply check the difference of strlen
$nc = mb_strlen(implode("\n", $new), $charset);
$oc = mb_strlen(implode("\n", $orig), $charset);
$added = $nc - $oc;
if ($added > 0)
$add_chars+= $added;
else
$del_chars+= -$added;
} else {
$add_chars+= $diffchars[0];
$del_chars+= $diffchars[1];
}
// is it minorfix ?
if (!$diffchars[2]) $minorfix = false;
$orig = array();
$new = array();
}
}
if (!empty($orig) or !empty($new)) {
$diffchars = diffcount_chars($orig, $new, $charset);
if ($diffchars === false) {
// simply check the difference of strlen
$nc = mb_strlen(implode("\n", $new), $charset);
$oc = mb_strlen(implode("\n", $orig), $charset);
$added = $nc - $oc;
if ($added > 0)
$add_chars+= $added;
else
$del_chars+= -$added;
} else {
$add_chars+= $diffchars[0];
$del_chars+= $diffchars[1];
}
// is it minorfix ?
if (!$diffchars[2]) $minorfix = false;
}
return array($add, $del, $add_chars, $del_chars, $minorfix);
}
/**
* counting add/del chars of a given array
*
* @author [email protected]
* @since 2015/06/08
* @param array $orig - original lines
* @param array $new - modified lines
* @param string $charet - character set
* @return array added,deleted chars
*/
function diffcount_chars($orig, $new, $charset) {
$oc = count($orig);
$nc = count($new);
if ($oc > 200 or $nc > 200) {
// too big to call WordLevelDiff.
return false;
}
include_once('lib/difflib.php');
$add_chars = 0;
$del_chars = 0;
$minorfix = true;
$result = new WordLevelDiff($orig, $new, $charset);
foreach ($result->edits as $edit) {
if (is_a($edit, '_DiffOp_Copy')) {
continue;
} elseif (is_a($edit, '_DiffOp_Add')) {
$chunk = str_replace(' ', "\n", implode('', $edit->_final));
$chunk = preg_replace('@(\n|\s)+@m', '', $chunk);
$add = mb_strlen($chunk, $charset);
if ($add > 3) $minorfix = false;
$add_chars+= $add;
} elseif (is_a($edit, '_DiffOp_Delete')) {
$del = mb_strlen(implode('', $edit->orig), $charset);
if ($del > 3) $minorfix = false;
$del_chars+= $del;
} elseif (is_a($edit, '_DiffOp_Change')) {
$del_change = mb_strlen(implode('', $edit->orig), $charset);
$add_change = mb_strlen(implode('', $edit->_final), $charset);
if (abs($add_change - $del_change) > 5) $minorfix = false;
$del_chars+= $del_change;
$add_chars+= $add_change;
}
}
return array($add_chars, $del_chars, $minorfix);
}
/**
* Extracted from Gallery Plugin
*
* make pagelist to paginate.
*
* @author [email protected]
* @since 2003/08/10
* @param integer $pages - the number of pages
* @param string $action - link to page action
* @param integer $curpage - current page
* @param integer $listcount - the number of pages to show
*/
function get_pagelist($formatter,$pages,$action,$curpage=1,$listcount=10,$bra="[",$cat="]",$sep="|",$prev="«",$next="»",$first="",$last="",$ellip="...") {
if ($curpage >=0)
if ($curpage > $pages)
$curpage=$pages;
if ($curpage <= 0)
$curpage=1;
$startpage=intval(($curpage-1) / $listcount)*$listcount +1;
$pnut="";
if ($startpage > 1) {
$prevref=$startpage-1;
if (!$first) {
$prev_l=$formatter->link_tag('',$action.$prevref,$prev);
$prev_1=$formatter->link_tag('',$action."1","1");
$pnut="$prev_l".$bra.$prev_1.$cat.$ellip.$bar;
}
} else {
$pnut=$prev.$bra."";
}
for ($i=$startpage;$i < ($startpage + $listcount) && $i <=$pages; $i++) {
if ($i != $startpage)
$pnut.=$sep;
if ($i != $curpage) {
$link=$formatter->link_tag('',$action.$i,$i);
$pnut.=$link;
} else
$pnut.="<b>$i</b>";
}
if ($i <= $pages) {
if (!$last) {
$next_l=$formatter->link_tag('',$action.$pages,$pages);
$next_i=$formatter->link_tag('',$action.$i,$next);
$pnut.=$cat.$ellip.$bra.$next_l.$cat.$next_i;
}
} else {
$pnut.="".$cat.$next;
}
return $pnut;
}
function _html_escape($string) {
return preg_replace(array("@<(?=/?\s*\w+[^<>]*)@", '@"@', '@&(?!#?[a-zA-Z0-9]+;)@'), array("<", '"', '&'), $string);
}
function _rawurlencode($url) {
$name=rawurlencode($url);
$urlname = str_replace(array('%2F', '%7E', '%3A'), array('/', '~', ':'), $name);
$urlname= preg_replace('#:+#',':',$urlname);
return $urlname;
}
/**
* do not encode already urlencoded chars.
*
* @author wkpark at gmail.com
* @since 2015/07/03
*/
function _urlencode($url) {
$url = preg_replace('#:+#', ':', $url);
$chunks = preg_split("@([a-zA-Z0-9/?.~#&:;=%_-]+)@", $url, -1, PREG_SPLIT_DELIM_CAPTURE);
for ($i = 0, $sz = count($chunks); $i < $sz; $i++) {
if ($i % 2 == 0) {
$chunks[$i] = strtr(rawurlencode($chunks[$i]), array(
'%23'=>'#',
'%26'=>'&',
'%2F'=>'/',
'%3A'=>':',
'%3B'=>';',
'%3D'=>'=',
'%3F'=>'?',
)
);
}
}
return preg_replace("/%(?![a-fA-Z0-9]{2})/", '%25', implode('', $chunks));
}
/**
* auto detect the encoding of a given URL and fix it
*
* @since 2014/03/21
*/
function _autofixencode($str) {
global $DBInfo;
if (isset($DBInfo->url_encodings)) {
$charset = mb_detect_encoding($str, $DBInfo->url_encodings);
if ($charset !== false) {
$tmp = iconv($charset, $DBInfo->charset, $str);
if ($tmp !== false) return $tmp;
}
}
return $str;
}
if (!function_exists('_stripslashes')) {
function _stripslashes($str) {
return get_magic_quotes_gpc() ? stripslashes($str):$str;
}
}
/**
* get random string to test regex
* from http://stackoverflow.com/questions/4356289/php-random-string-generator
*/
function _str_random($len, $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ;:%#@",`abcdefghijklmnopqrstuvwxyz1234567890') {
$clen = strlen($chars);
$str = '';
for ($i = 0; $i < $len; $i++) {
$str.= $chars[rand(0, $clen - 1)];
}
return $str;
}
function qualifiedUrl($url) {
if (substr($url,0,7)=='http://' or substr($url,0,8) == 'https://')
return $url;
$port= ($_SERVER['SERVER_PORT'] != 80) ? ':'.$_SERVER['SERVER_PORT']:'';
$proto= 'http';
if (!empty($_SERVER['HTTPS'])) $proto= 'https';
else $proto= strtolower(strtok($_SERVER['SERVER_PROTOCOL'],'/'));
if (empty($url[0]) or $url[0] != '/') $url='/'.$url; // XXX
if (strpos($_SERVER['HTTP_HOST'],':') !== false)
$port = '';
return $proto.'://'.$_SERVER['HTTP_HOST'].$port.$url;
}
function find_needle($body,$needle,$exclude='',$count=0) {
if (!$body) return '';
$test=@preg_match("/$needle/","",$match);
if ($test === false) {
return '';
}
$lines=explode("\n",$body);
$out="";
$matches=preg_grep("/($needle)/i",$lines);
if ($exclude)
if (preg_grep("/($exclude)/i",$matches)) return '';
if (count($matches) > $count) $matches=array_slice($matches,0,$count);
foreach ($matches as $line) {
$line=preg_replace("/($needle)/i","<strong>\\1</strong>",str_replace("<","<",$line));
$out.="<br />\n ".$line;
}
return $out;
}
function normalize($title) {
if (strpos($title," "))
#return preg_replace("/[\?!$%\.\^;&\*()_\+\|\[\] ]/","",ucwords($title));
return str_replace(" ","",ucwords($title));
return $title;
}
function normalize_word($word,$group='',$pagename='',$nogroup=0,$islink=1) {
if ($word[0]=='[') $word=substr($word,1,-1);
if ($word[0]=='"') $word=substr($word,1,-1);
$page=$word;
$text='';
$main_page='';
# User namespace extension
if ($page[0]=='~' and ($p=strpos($page,'/'))) {
# change ~User/Page to User~Page
$main_page=$page;
$page=$text=substr($page,1,$p-1).'~'.substr($page,$p+1);
return array($page,$text,$main_page);
}
if ($page[0]=='.' and preg_match('/^(\.{1,2})\//',$page,$match)) {
if ($match[1] == '..') {
if (($pos = strrpos($pagename,'/')) > 0) {
$upper=substr($pagename,0,$pos);
$page=substr($page,2);
if ($page == '/') $page=$upper;
else $page=$upper.$page;
} else {
$page=substr($page,3);
if ($page == '') $page=substr($pagename,strlen($group));
else if ($group) $page=$group.$page;
}
} else {
$page=substr($page,1);
if ($page == '/') $page='';
$page=$pagename.$page;
}
return array($page,$text,$main_page);
}
#if ($nogroup and $page[0]=='/') { # SubPage without group support. XXX disabled
if ($page[0]=='/') { # SubPage
$page=$pagename.$page;
} else if (!empty($islink) && $tok=strtok($page,'.')) {
# print $tok;
if ($tok=='Main') {
# Main.MoniWiki => MoniWiki
$page=$text=strtok('');
return array($page,$text,$main_page);
} else if (strpos($tok,'~') === false and strpos($tok,'/') === false) {
# Ko~Hello.World =x=> Ko~Hello~World
# Ko.Hello => Ko~Hello
#$page=preg_replace('/\./','~',$page,1);
$npage=preg_replace('/(?<!\\\\)\./','~',$page,1);
if ($npage == $page) $page=preg_replace('/(\\\.)/','.',$page,1);
else $page=$npage;
$text=$main_page=strtok('');
}
}
if (!$nogroup and $group and !strpos($page,'~')) {
# UserNameSpace pages: e.g.) Ko~MoniWiki etc.
if ($page[0]=='/') {
# /MoniWiki => MoniWiki
$page=$text=substr($page,1);
} else {
$main_page=$text=$page;
$page=$group.$page;
}
}
if (preg_match("/^wiki:/", $page)) { # wiki:
$text=$page=substr($page,5);
if (preg_match("/^\"([^\"]+)\"\s?(.*)$/", $page, $m)) {
// [[wiki:"Page with space" goto Page]] case
list($page, $text) = array($m[1], $m[2]);
} else if (strpos($page,' ')) { # have a space ?
list($page,$text)= explode(' ',$page,2);
}
if ($page[0]=='/') $page= $pagename.$page;
}
return array($page,$text,$main_page);
}
if (function_exists('str_getcsv')) {
function get_csv($str) {
return str_getcsv($str);
}
} else {
function get_csv($str) {
// csv_regex from Mastering regular expressions p480, 481
$csv_regex = '{
\G(?:^|\s*,)\s* # spaces are added
(?:
# Either a double quoted filed
" # field opening quote
( [^"]*+ (?: "" [^"]*+ )*+ )
" # closing quote
| # .. or ...
# ... some non-quote/non-comma text...
( [^",]*+ )
)
}x';
preg_match_all($csv_regex, $str, $all_matches);
$ret = array();
for ($i = 0; $i < count($all_matches[0]); $i++) {
if (strlen($all_matches[2][$i]) > 0)
$ret[] = $all_matches[2][$i];
else
// a quoted value.
$ret[] = preg_replace('/""/', '"', $all_matches[1][$i]);
}
return $ret;
}
}
/**
* get aliases from alias file
*
* @author [email protected]
* @since 2010/08/12
*
*/
function get_aliases($file) {
$lines = array();
if (file_exists($file)) $lines = file($file);
if (empty($lines))
return array();
$alias = array();
foreach ($lines as $line) {
$line=trim($line);
if (empty($line) or $line[0]=='#') continue;
# support three types of aliases
#
# dest<alias1,alias2,...
# dest,alias1,alias2,...
# alias>dest1,dest2,dest3,...
#
if (($p=strpos($line,'>')) !== false) {
list($key, $list) = explode('>',$line,2);
$vals = get_csv($list);
$alias[$key] = $vals;
} else {
if (($p = strpos($line, '<')) !== false) {
list($val, $keys) = explode('<', $line, 2);
$keys = get_csv($keys);
} else {
$keys = get_csv($line);
$val = array_shift($keys);
}
foreach ($keys as $k) {
if (!isset($alias[$k])) $alias[$k] = array();
$alias[$k][] = $val;
}
}
}
return $alias;
}
/**
* Store aliases
*
* @author Won-Kyu Park <[email protected]>
*/
function store_aliases($pagename, $aliases) {
$cache = new Cache_Text('alias');
$cur = $cache->fetch($pagename);
if (!is_array($cur)) $cur = array();
if (empty($cur) and empty($aliases))
return;
// inverted index
$icache = new Cache_Text('aliasname');
if (key($cur) == $pagename)
$cur = $cur[$pagename];
$add = array_diff($aliases, $cur);
$del = array_diff($cur, $aliases);
// merge new aliases
foreach ($add as $a) {
if (!isset($a[0])) continue;
$i = $icache->fetch($a);
if (!is_array($i)) $i = array();
$i = array_merge($i, array($pagename));
$i = array_unique($i);
$icache->update($a, $i);
}
// remove deleted aliases
foreach ($del as $d) {
if (!isset($d[0])) continue;
$i = $icache->fetch($d);
if (!is_array($i)) $i = array();
$i = array_diff($i, array($pagename));
if (empty($i))
$icache->remove($d);
else
$icache->update($d, $i);
}
// update pagealiases
if (!empty($aliases))
$cache->update($pagename, array($pagename => $aliases));
else
$cache->remove($pagename);
}
/**
* Store pagelinks
*
* @author Won-Kyu Park <[email protected]>
*/
function store_pagelinks($pagename, $pagelinks) {
global $DBInfo;
$bcache = new Cache_Text('backlinks');
$cache = new Cache_Text('pagelinks');
unset($pagelinks['TwinPages']);
$cur = $cache->fetch($pagename);
if (!is_array($cur)) $cur = array();
$add = array_diff($pagelinks, $cur);
$del = array_diff($cur, $pagelinks);
// merge new backlinks
foreach ($add as $a) {
if (!isset($a[0])) continue;
$bl = $bcache->fetch($a);
if (!is_array($bl)) $bl = array();
$bl = array_merge($bl, array($pagename));
$bl = array_unique($bl);
sort($bl);
$bcache->update($a, $bl);
}
// remove deleted backlinks
foreach ($del as $d) {
if (!isset($d[0])) continue;
$bl = $bcache->fetch($d);
if (!is_array($bl)) $bl = array();
$bl = array_diff($bl, array($pagename));
sort($bl);
$bcache->update($d, $bl);
}
if (!empty($pagelinks))
$cache->update($pagename, $pagelinks);
else
$cache->remove($pagename);
}
/**
* Get pagelinks from the wiki text
*
* @author Won-Kyu Park <[email protected]>
*/
function get_pagelinks($formatter, $text) {
// split into chunks
$chunk = preg_split("/({{{
(?:(?:[^{}]+|
{[^{}]+}(?!})|
(?<!{){{1,2}(?!{)|
(?<!})}{1,2}(?!}))|(?1)
)++}}})/x",$text,-1,PREG_SPLIT_DELIM_CAPTURE);
$inline = array(); // save inline nowikis
if (count($chunk) > 1) {
// protect inline nowikis
$nc = '';
$k = 1;
$idx = 1;
foreach ($chunk as $c) {
if ($k % 2) {
$nc.= $c.' ';
}
$k++;
}
$text = $nc;
}
// check wordrule
if (empty($formatter->wordrule)) $formatter->set_wordrule();
preg_match_all("/(".$formatter->wordrule.")/", $text, $match);
$words = array();
foreach ($match[0] as $k=>$v) {
if (preg_match('/^\!/', $v)) continue;
if (preg_match('/^\?/', $v)) {
$words[] = substr($v, 1);
} else if (preg_match('/^\[?wiki:[^`\'\{\]\^\*\(]/', $v) || !preg_match('/^\[?'.$formatter->urls.':/', $v)) {
$extended = false;
$creole = false;
$word = rtrim($v, '`'); // XXX
if (preg_match('/^\[\[(.*)\]\]$/', $word, $m)) {
// MediaWiki/WikiCreole like links
$creole = true;
$word = $m[1];
} else if (preg_match('/^\[(.*)\]$/', $word, $m)) {
$word = $m[1];
}
if (preg_match('/^(wiki:)?/', $word, $m)) {
if (!empty($m[1])) $word = substr($word, 5);
$word = ltrim($word); // ltrim wikiwords
if (preg_match("/^\"([^\"]*)\"\s?/", $word, $m1)) {
$extended = true;
$word = $m1[1];
} else if (!empty($m[1]) and ($p = strpos($word, " ")) !== false) {
$word = substr($word, 0, $p);
}
} else if ($creole and ($p = strpos($word, '|')) !== false) {
$word = substr($word, 0, $p);
}
if (!$extended and empty($formatter->mediawiki_style) and strpos($word, " ") !== false) {
$word = normalize($word);
}
if (preg_match("/^([^\(:]+)(\((.*)\))?$/", $word, $m)) {
if (isset($m[1])) {
$name = $m[1];
} else {
$name = $word;
}
// check macro
$myname = getPlugin($name);
if (!empty($myname)) {
// this is macro
continue;
}
}
$word = strtok($word, '#?'); // trim anchor tag
$words[] = $word;
}
}
return array_values(array_unique($words));
}
/**
* Update redirect cache and it's index
*
* @author Won-Kyu Park <wkpark at gmail.com>
* @param timestamp $timestamp lastmodified time of the cache file
* @return void
*/
function update_redirects($pagename, $redirect, $refresh = false) {
// update #redirect cache
$rd = new Cache_Text('redirect');
$old = $rd->fetch($pagename);
// FIXME for legacy case
if (is_array($old)) $old = $old[0];
if ($old === false && !isset($redirect[0]))
return;
// update invert redirect index
$rds = new Cache_Text('redirects');
if (!$refresh || $old != $redirect) {
// update direct cache
$rd->update($pagename, array($redirect));
$nr = $redirect;
if (($p = strpos($nr, '#')) > 0) {
// get pagename only
//$anchor = substr($nr, $p);
$nr = substr($nr, 0, $p);
}
if (!isset($nr[0])) {
$rd->remove($pagename);
} else if (!preg_match('@^https?://@', $nr)) { // not a URL redirect
// add redirect links
$redirects = $rds->fetch($nr);
if (empty($redirects)) $redirects = array();
$redirects = array_merge($redirects, array($pagename));
$rds->update($nr, $redirects);
}
while ($old != '' and $old != false) {
// get pagename only
if (($p = strpos($old, '#')) > 0) {
//$anchor = substr($old, $p);
$old = substr($old, 0, $p);
}
if ($nr == $old) break; // same redirect check A#s-1 ~ A#s-2 redirects
// delete redirect links
$l = $rds->fetch($old);
if ($l !== false and is_array($l)) {
$redirects = array_diff($l, array($pagename));
if (empty($redirects)) $rds->remove($old);
else $rds->update($old, $redirects);
}
break;
}
}
}
/**
* Checks and sets HTTP headers for conditional HTTP requests
* slightly modified to set $etag separatly by [email protected]
*
* @author Simon Willison <[email protected]>
* @link http://simon.incutio.com/archive/2003/04/23/conditionalGet
* @param timestamp $timestamp lastmodified time of the cache file
* @returns void or exits with previously header() commands executed
*/
function http_need_cond_request($mtime, $last_modified = '', $etag = '') {
// A PHP implementation of conditional get, see
// http://fishbowl.pastiche.org/archives/001132.html
if (empty($last_modified)) // is it timestamp ?
$last_modified = substr(gmdate('r', $mtime), 0, -5).'GMT';
if (empty($etag)) // pseudo etag
$etag = md5($last_modified);
if ($etag[0] != '"')
$etag = '"' . $etag . '"';
// See if the client has provided the required headers
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
// fix broken IEx
$if_modified_since = preg_replace('/;.*$/', '', _stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']));
}else{
$if_modified_since = false;
}
if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
$if_none_match = _stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
}else{
$if_none_match = false;
}
if (!$if_modified_since && !$if_none_match) {
return true;
}
// At least one of the headers is there - check them
while ($if_none_match && $if_none_match != $etag) {
// it is weak ETag ?
if (preg_match('@^W/(.*)@', $if_none_match, $m)) {
if ($m[1] == $etag)
break;
}
return true; // etag is there but doesn't match
}
if ($if_modified_since) {
// calculate time
$mytime = @strtotime( $if_modified_since );
if ( $mtime > $mytime) {
header('X-Check: '.$mtime.' '.$mytime);
return true; // if-modified-since is there but doesn't match