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helper.php
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<?php
/**
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Esther Brunner <[email protected]>
* @author Christopher Smith <[email protected]>
* @author Gina Häußge, Michael Klier <[email protected]>
* @author Michael Hamann <[email protected]>
*/
// must be run within Dokuwiki
if (!defined('DOKU_INC')) die();
if (!defined('DOKU_LF')) define('DOKU_LF', "\n");
if (!defined('DOKU_TAB')) define('DOKU_TAB', "\t");
if (!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN', DOKU_INC.'lib/plugins/');
/**
* Helper functions for the include plugin and other plugins that want to include pages.
*/
class helper_plugin_include extends DokuWiki_Plugin { // DokuWiki_Helper_Plugin
var $defaults = array();
var $sec_close = true;
/** @var helper_plugin_tag $taghelper */
var $taghelper = null;
var $includes = array(); // deprecated - compatibility code for the blog plugin
/**
* Constructor loads default config settings once
*/
function __construct() {
$this->defaults['noheader'] = $this->getConf('noheader');
$this->defaults['firstsec'] = $this->getConf('firstseconly');
$this->defaults['editbtn'] = $this->getConf('showeditbtn');
$this->defaults['taglogos'] = $this->getConf('showtaglogos');
$this->defaults['footer'] = $this->getConf('showfooter');
$this->defaults['redirect'] = $this->getConf('doredirect');
$this->defaults['date'] = $this->getConf('showdate');
$this->defaults['mdate'] = $this->getConf('showmdate');
$this->defaults['user'] = $this->getConf('showuser');
$this->defaults['comments'] = $this->getConf('showcomments');
$this->defaults['linkbacks'] = $this->getConf('showlinkbacks');
$this->defaults['tags'] = $this->getConf('showtags');
$this->defaults['link'] = $this->getConf('showlink');
$this->defaults['permalink'] = $this->getConf('showpermalink');
$this->defaults['indent'] = $this->getConf('doindent');
$this->defaults['linkonly'] = $this->getConf('linkonly');
$this->defaults['title'] = $this->getConf('title');
$this->defaults['pageexists'] = $this->getConf('pageexists');
$this->defaults['parlink'] = $this->getConf('parlink');
$this->defaults['inline'] = false;
$this->defaults['order'] = $this->getConf('order');
$this->defaults['rsort'] = $this->getConf('rsort');
$this->defaults['depth'] = $this->getConf('depth');
$this->defaults['readmore'] = $this->getConf('readmore');
}
/**
* Available methods for other plugins
*/
function getMethods() {
$result = array();
$result[] = array(
'name' => 'get_flags',
'desc' => 'overrides standard values for showfooter and firstseconly settings',
'params' => array('flags' => 'array'),
);
return $result;
}
/**
* Overrides standard values for showfooter and firstseconly settings
*/
function get_flags($setflags) {
// load defaults
$flags = $this->defaults;
foreach ($setflags as $flag) {
$value = '';
if (strpos($flag, '=') !== -1) {
list($flag, $value) = explode('=', $flag, 2);
}
switch ($flag) {
case 'footer':
$flags['footer'] = 1;
break;
case 'nofooter':
$flags['footer'] = 0;
break;
case 'firstseconly':
case 'firstsectiononly':
$flags['firstsec'] = 1;
break;
case 'fullpage':
$flags['firstsec'] = 0;
break;
case 'showheader':
case 'header':
$flags['noheader'] = 0;
break;
case 'noheader':
$flags['noheader'] = 1;
break;
case 'editbtn':
case 'editbutton':
$flags['editbtn'] = 1;
break;
case 'noeditbtn':
case 'noeditbutton':
$flags['editbtn'] = 0;
break;
case 'permalink':
$flags['permalink'] = 1;
break;
case 'nopermalink':
$flags['permalink'] = 0;
break;
case 'redirect':
$flags['redirect'] = 1;
break;
case 'noredirect':
$flags['redirect'] = 0;
break;
case 'link':
$flags['link'] = 1;
break;
case 'nolink':
$flags['link'] = 0;
break;
case 'user':
$flags['user'] = 1;
break;
case 'nouser':
$flags['user'] = 0;
break;
case 'comments':
$flags['comments'] = 1;
break;
case 'nocomments':
$flags['comments'] = 0;
break;
case 'linkbacks':
$flags['linkbacks'] = 1;
break;
case 'nolinkbacks':
$flags['linkbacks'] = 0;
break;
case 'tags':
$flags['tags'] = 1;
break;
case 'notags':
$flags['tags'] = 0;
break;
case 'date':
$flags['date'] = 1;
break;
case 'nodate':
$flags['date'] = 0;
break;
case 'mdate':
$flags['mdate'] = 1;
break;
case 'nomdate':
$flags['mdate'] = 0;
break;
case 'indent':
$flags['indent'] = 1;
break;
case 'noindent':
$flags['indent'] = 0;
break;
case 'linkonly':
$flags['linkonly'] = 1;
break;
case 'nolinkonly':
case 'include_content':
$flags['linkonly'] = 0;
break;
case 'inline':
$flags['inline'] = 1;
break;
case 'title':
$flags['title'] = 1;
break;
case 'notitle':
$flags['title'] = 0;
break;
case 'pageexists':
$flags['pageexists'] = 1;
break;
case 'nopageexists':
$flags['pageexists'] = 0;
break;
case 'existlink':
$flags['pageexists'] = 1;
$flags['linkonly'] = 1;
break;
case 'parlink':
$flags['parlink'] = 1;
break;
case 'noparlink':
$flags['parlink'] = 0;
break;
case 'order':
$flags['order'] = $value;
break;
case 'sort':
$flags['rsort'] = 0;
break;
case 'rsort':
$flags['rsort'] = 1;
break;
case 'depth':
$flags['depth'] = max(intval($value), 0);
break;
case 'beforeeach':
$flags['beforeeach'] = $value;
break;
case 'aftereach':
$flags['aftereach'] = $value;
break;
case 'readmore':
$flags['readmore'] = 1;
break;
case 'noreadmore':
$flags['readmore'] = 0;
break;
case 'length':
$flags['length'] = max(intval($value), 0);
break;
}
}
// the include_content URL parameter overrides flags
if (isset($_REQUEST['include_content']))
$flags['linkonly'] = 0;
return $flags;
}
/**
* Shortens page instructions if it finds a 'includestop'
* or content is longer than $flags['length'].
*/
protected function _shorten_instructions(&$ins, $flags) {
// Cut off page content if required
$length = false;
if (!empty($flags['length'])) {
$length = $flags['length'];
}
$stop = false;
$tr_closed = false;
$t_closed = false;
$li_closed = false;
$l_closed = false;
$max_entries = count($ins);
$sum = 0;
for ($index = 0 ; $index < $max_entries ; $index++) {
$entry = &$ins[$index];
switch ($entry[0]) {
case 'plugin':
if ($entry[1][0] == 'include_stop') {
$stop = true;
unset($ins[$index]);
}
break;
case 'cdata':
$entryLength = strlen($entry[1][0]);
if (!$stop && $length !== false && $sum+$entryLength > $length) {
if ($sum < $length) {
$max = $length - $sum;
$entry[1][0] = substr ($entry[1][0], 0, $max).'...';
$sum = $length;
$stop = true;
} else {
unset($ins[$index]);
}
} else {
if ($stop) {
unset($ins[$index]);
}
}
$sum += $entryLength;
break;
case 'tablerow_close':
if ($stop) {
if ($t_closed || $tr_closed) {
unset ($ins[$index]);
} else {
$tr_closed = true;
}
}
break;
case 'table_close':
if ($stop) {
if ($t_closed) {
unset ($ins[$index]);
} else {
$t_closed = true;
}
}
break;
case 'table_open':
case 'tablerow_open':
case 'tablethead_open':
case 'tableheader_open':
if ($stop) {
unset ($ins[$index]);
}
break;
case 'tablethead_close':
case 'tableheader_close':
case 'tablecell_open':
case 'tablecell_close':
if ($t_closed || $tr_closed) {
unset ($ins[$index]);
}
break;
case 'listitem_close':
if ($stop) {
if ($l_closed || $li_closed) {
unset ($ins[$index]);
} else {
$li_closed = true;
}
}
break;
case 'listu_close':
case 'listo_close':
if ($stop) {
if ($l_closed) {
unset ($ins[$index]);
} else {
$l_closed = true;
}
}
break;
case 'listu_open':
case 'listo_open':
case 'listitem_open':
if ($stop) {
unset ($ins[$index]);
}
break;
case 'listcontent_open':
case 'listcontent_close':
if ($l_closed || $li_closed) {
unset ($ins[$index]);
}
break;
case 'section_close':
if ($stop) {
// Delete everything behind this point
for ($del = $index++ ; $del < $max_entries ; $del++) {
unset($ins[$del]);
}
// Leave switch and for loop!
break 2;
}
break;
}
}
// Return if content was cut of or not
return $stop;
}
/**
* Returns the converted instructions of a give page/section
*
* @author Michael Klier <[email protected]>
* @author Michael Hamann <[email protected]>
*/
function _get_instructions($page, $sect, $mode, $lvl, $flags, $root_id = null, $included_pages = array()) {
$key = ($sect) ? $page . '#' . $sect : $page;
$this->includes[$key] = true; // legacy code for keeping compatibility with other plugins
// keep compatibility with other plugins that don't know the $root_id parameter
if (is_null($root_id)) {
global $ID;
$root_id = $ID;
}
if ($flags['linkonly']) {
if (page_exists($page) || $flags['pageexists'] == 0) {
$title = '';
if ($flags['title'])
$title = p_get_first_heading($page);
if($flags['parlink']) {
$ins = array(
array('p_open', array()),
array('internallink', array(':'.$key, $title)),
array('p_close', array()),
);
} else {
$ins = array(array('internallink', array(':'.$key,$title)));
}
}else {
$ins = array();
}
} else {
if (page_exists($page)) {
global $ID;
$backupID = $ID;
$ID = $page; // Change the global $ID as otherwise plugins like the discussion plugin will save data for the wrong page
$ins = p_cached_instructions(wikiFN($page), false, $page);
$ID = $backupID;
} else {
$ins = array();
}
$this->_convert_instructions($ins, $lvl, $page, $sect, $flags, $root_id, $included_pages);
}
if ($this->_shorten_instructions($ins, $flags) && $flags['readmore']) {
$ins[] = array('plugin', array('include_readmore', array($page)));
}
return $ins;
}
/**
* Converts instructions of the included page
*
* The funcion iterates over the given list of instructions and generates
* an index of header and section indicies. It also removes document
* start/end instructions, converts links, and removes unwanted
* instructions like tags, comments, linkbacks.
*
* Later all header/section levels are convertet to match the current
* inclusion level.
*
* @author Michael Klier <[email protected]>
*/
function _convert_instructions(&$ins, $lvl, $page, $sect, $flags, $root_id, $included_pages = array()) {
global $conf;
// filter instructions if needed
if(!empty($sect)) {
$this->_get_section($ins, $sect); // section required
}
if($flags['firstsec']) {
$this->_get_firstsec($ins, $page, $flags); // only first section
}
$ns = getNS($page);
$num = count($ins);
$conv_idx = array(); // conversion index
$lvl_max = false; // max level
$first_header = -1;
$no_header = false;
$sect_title = false;
$endpos = null; // end position of the raw wiki text
for($i=0; $i<$num; $i++) {
// adjust links with image titles
if (strpos($ins[$i][0], 'link') !== false && isset($ins[$i][1][1]) && is_array($ins[$i][1][1]) && $ins[$i][1][1]['type'] == 'internalmedia') {
// resolve relative ids, but without cleaning in order to preserve the name
$media_id = resolve_id($ns, $ins[$i][1][1]['src']);
// make sure that after resolving the link again it will be the same link
if ($media_id{0} != ':') $media_id = ':'.$media_id;
$ins[$i][1][1]['src'] = $media_id;
}
switch($ins[$i][0]) {
case 'document_start':
case 'document_end':
case 'section_edit':
unset($ins[$i]);
break;
case 'header':
// get section title of first section
if($sect && !$sect_title) {
$sect_title = $ins[$i][1][0];
}
// check if we need to skip the first header
if((!$no_header) && $flags['noheader']) {
$no_header = true;
}
$conv_idx[] = $i;
// get index of first header
if($first_header == -1) $first_header = $i;
// get max level of this instructions set
if(!$lvl_max || ($ins[$i][1][1] < $lvl_max)) {
$lvl_max = $ins[$i][1][1];
}
break;
case 'section_open':
if ($flags['inline'])
unset($ins[$i]);
else
$conv_idx[] = $i;
break;
case 'section_close':
if ($flags['inline'])
unset($ins[$i]);
break;
case 'internallink':
case 'internalmedia':
// make sure parameters aren't touched
$link_params = '';
$link_id = $ins[$i][1][0];
$link_parts = explode('?', $link_id, 2);
if (count($link_parts) === 2) {
$link_id = $link_parts[0];
$link_params = $link_parts[1];
}
// resolve the id without cleaning it
$link_id = resolve_id($ns, $link_id, false);
// this id is internal (i.e. absolute) now, add ':' to make resolve_id work again
if ($link_id{0} != ':') $link_id = ':'.$link_id;
// restore parameters
$ins[$i][1][0] = ($link_params != '') ? $link_id.'?'.$link_params : $link_id;
if ($ins[$i][0] == 'internallink' && !empty($included_pages)) {
// change links to included pages into local links
$link_id = $ins[$i][1][0];
$link_parts = explode('?', $link_id, 2);
// only adapt links without parameters
if (count($link_parts) === 1) {
$link_parts = explode('#', $link_id, 2);
$hash = '';
if (count($link_parts) === 2) {
list($link_id, $hash) = $link_parts;
}
$exists = false;
resolve_pageid($ns, $link_id, $exists);
if (array_key_exists($link_id, $included_pages)) {
if ($hash) {
// hopefully the hash is also unique in the including page (otherwise this might be the wrong link target)
$ins[$i][0] = 'locallink';
$ins[$i][1][0] = $hash;
} else {
// the include section ids are different from normal section ids (so they won't conflict) but this
// also means that the normal locallink function can't be used
$ins[$i][0] = 'plugin';
$ins[$i][1] = array('include_locallink', array($included_pages[$link_id]['hid'], $ins[$i][1][1], $ins[$i][1][0]));
}
}
}
}
break;
case 'locallink':
/* Convert local links to internal links if the page hasn't been fully included */
if ($included_pages == null || !array_key_exists($page, $included_pages)) {
$ins[$i][0] = 'internallink';
$ins[$i][1][0] = ':'.$page.'#'.$ins[$i][1][0];
}
break;
case 'plugin':
// FIXME skip other plugins?
switch($ins[$i][1][0]) {
case 'tag_tag': // skip tags
case 'discussion_comments': // skip comments
case 'linkback': // skip linkbacks
case 'data_entry': // skip data plugin
case 'meta': // skip meta plugin
case 'indexmenu_tag': // skip indexmenu sort tag
case 'include_sorttag': // skip include plugin sort tag
unset($ins[$i]);
break;
// adapt indentation level of nested includes
case 'include_include':
if (!$flags['inline'] && $flags['indent'])
$ins[$i][1][1][4] += $lvl;
break;
/*
* if there is already a closelastsecedit instruction (was added by one of the section
* functions), store its position but delete it as it can't be determined yet if it is needed,
* i.e. if there is a header which generates a section edit (depends on the levels, level
* adjustments, $no_header, ...)
*/
case 'include_closelastsecedit':
$endpos = $ins[$i][1][1][0];
unset($ins[$i]);
break;
}
break;
default:
break;
}
}
// calculate difference between header/section level and include level
$diff = 0;
if (!isset($lvl_max)) $lvl_max = 0; // if no level found in target, set to 0
$diff = $lvl - $lvl_max + 1;
if ($no_header) $diff -= 1; // push up one level if "noheader"
// convert headers and set footer/permalink
$hdr_deleted = false;
$has_permalink = false;
$footer_lvl = false;
$contains_secedit = false;
$section_close_at = false;
foreach($conv_idx as $idx) {
if($ins[$idx][0] == 'header') {
if ($section_close_at === false && isset($ins[$idx+1]) && $ins[$idx+1][0] == 'section_open') {
// store the index of the first heading that is followed by a new section
// the wrap plugin creates sections without section_open so the section shouldn't be closed before them
$section_close_at = $idx;
}
if($no_header && !$hdr_deleted) {
unset ($ins[$idx]);
$hdr_deleted = true;
continue;
}
if($flags['indent']) {
$lvl_new = (($ins[$idx][1][1] + $diff) > 5) ? 5 : ($ins[$idx][1][1] + $diff);
$ins[$idx][1][1] = $lvl_new;
}
if($ins[$idx][1][1] <= $conf['maxseclevel'])
$contains_secedit = true;
// set permalink
if($flags['link'] && !$has_permalink && ($idx == $first_header)) {
$this->_permalink($ins[$idx], $page, $sect, $flags);
$has_permalink = true;
}
// set footer level
if(!$footer_lvl && ($idx == $first_header) && !$no_header) {
if($flags['indent'] && isset($lvl_new)) {
$footer_lvl = $lvl_new;
} else {
$footer_lvl = $lvl_max;
}
}
} else {
// it's a section
if($flags['indent']) {
$lvl_new = (($ins[$idx][1][0] + $diff) > 5) ? 5 : ($ins[$idx][1][0] + $diff);
$ins[$idx][1][0] = $lvl_new;
}
// check if noheader is used and set the footer level to the first section
if($no_header && !$footer_lvl) {
if($flags['indent'] && isset($lvl_new)) {
$footer_lvl = $lvl_new;
} else {
$footer_lvl = $lvl_max;
}
}
}
}
// close last open section of the included page if there is any
if ($contains_secedit) {
array_push($ins, array('plugin', array('include_closelastsecedit', array($endpos))));
}
// add edit button
if($flags['editbtn']) {
$this->_editbtn($ins, $page, $sect, $sect_title, ($flags['redirect'] ? $root_id : false));
}
// add footer
if($flags['footer']) {
$ins[] = $this->_footer($page, $sect, $sect_title, $flags, $footer_lvl, $root_id);
}
// wrap content at the beginning of the include that is not in a section in a section
if ($lvl > 0 && $section_close_at !== 0 && $flags['indent'] && !$flags['inline']) {
if ($section_close_at === false) {
$ins[] = array('section_close', array());
array_unshift($ins, array('section_open', array($lvl)));
} else {
$section_close_idx = array_search($section_close_at, array_keys($ins));
if ($section_close_idx > 0) {
$before_ins = array_slice($ins, 0, $section_close_idx);
$after_ins = array_slice($ins, $section_close_idx);
$ins = array_merge($before_ins, array(array('section_close', array())), $after_ins);
array_unshift($ins, array('section_open', array($lvl)));
}
}
}
// add instructions entry wrapper
$include_secid = (isset($flags['include_secid']) ? $flags['include_secid'] : NULL);
array_unshift($ins, array('plugin', array('include_wrap', array('open', $page, $flags['redirect'], $include_secid))));
if (isset($flags['beforeeach']))
array_unshift($ins, array('entity', array($flags['beforeeach'])));
array_push($ins, array('plugin', array('include_wrap', array('close'))));
if (isset($flags['aftereach']))
array_push($ins, array('entity', array($flags['aftereach'])));
// close previous section if any and re-open after inclusion
if($lvl != 0 && $this->sec_close && !$flags['inline']) {
array_unshift($ins, array('section_close', array()));
$ins[] = array('section_open', array($lvl));
}
}
/**
* Appends instruction item for the include plugin footer
*
* @author Michael Klier <[email protected]>
*/
function _footer($page, $sect, $sect_title, $flags, $footer_lvl, $root_id) {
$footer = array();
$footer[0] = 'plugin';
$footer[1] = array('include_footer', array($page, $sect, $sect_title, $flags, $root_id, $footer_lvl));
return $footer;
}
/**
* Appends instruction item for an edit button
*
* @author Michael Klier <[email protected]>
*/
function _editbtn(&$ins, $page, $sect, $sect_title, $root_id) {
$title = ($sect) ? $sect_title : $page;
$editbtn = array();
$editbtn[0] = 'plugin';
$editbtn[1] = array('include_editbtn', array($title));
$ins[] = $editbtn;
}
/**
* Convert instruction item for a permalink header
*
* @author Michael Klier <[email protected]>
*/
function _permalink(&$ins, $page, $sect, $flags) {
$ins[0] = 'plugin';
$ins[1] = array('include_header', array($ins[1][0], $ins[1][1], $ins[1][2], $page, $sect, $flags));
}
/**
* Get a section including its subsections
*
* @author Michael Klier <[email protected]>
*/
function _get_section(&$ins, $sect) {
$num = count($ins);
$offset = false;
$lvl = false;
$end = false;
$endpos = null; // end position in the input text, needed for section edit buttons
$check = array(); // used for sectionID() in order to get the same ids as the xhtml renderer
for($i=0; $i<$num; $i++) {
if ($ins[$i][0] == 'header') {
// found the right header
if (sectionID($ins[$i][1][0], $check) == $sect) {
$offset = $i;
$lvl = $ins[$i][1][1];
} elseif ($offset && $lvl && ($ins[$i][1][1] <= $lvl)) {
$end = $i - $offset;
$endpos = $ins[$i][1][2]; // the position directly after the found section, needed for the section edit button
break;
}
}
}
$offset = $offset ? $offset : 0;
$end = $end ? $end : ($num - 1);
if(is_array($ins)) {
$ins = array_slice($ins, $offset, $end);
// store the end position in the include_closelastsecedit instruction so it can generate a matching button
$ins[] = array('plugin', array('include_closelastsecedit', array($endpos)));
}
}
/**
* Only display the first section of a page and a readmore link
*
* @author Michael Klier <[email protected]>
*/
function _get_firstsec(&$ins, $page, $flags) {
$num = count($ins);
$first_sect = false;
$endpos = null; // end position in the input text
for($i=0; $i<$num; $i++) {
if($ins[$i][0] == 'section_close') {
$first_sect = $i;
}
if ($ins[$i][0] == 'header') {
/*
* Store the position of the last header that is encountered. As section_close/open-instruction are
* always (unless some plugin modifies this) around a header instruction this means that the last
* position that is stored here is exactly the position of the section_close/open at which the content
* is truncated.
*/
$endpos = $ins[$i][1][2];
}
// only truncate the content and add the read more link when there is really
// more than that first section
if(($first_sect) && ($ins[$i][0] == 'section_open')) {
$ins = array_slice($ins, 0, $first_sect);
if ($flags['readmore']) {
$ins[] = array('plugin', array('include_readmore', array($page)));
}
$ins[] = array('section_close', array());
// store the end position in the include_closelastsecedit instruction so it can generate a matching button
$ins[] = array('plugin', array('include_closelastsecedit', array($endpos)));
return;
}
}
}
/**
* Gives a list of pages for a given include statement
*
* @author Michael Hamann <[email protected]>
*/
function _get_included_pages($mode, $page, $sect, $parent_id, $flags) {
global $conf;
$pages = array();
switch($mode) {
case 'namespace':
$page = cleanID($page);
$ns = utf8_encodeFN(str_replace(':', '/', $page));
// depth is absolute depth, not relative depth, but 0 has a special meaning.
$depth = $flags['depth'] ? $flags['depth'] + substr_count($page, ':') + ($page ? 1 : 0) : 0;
search($pagearrays, $conf['datadir'], 'search_allpages', array('depth' => $depth), $ns);
if (is_array($pagearrays)) {
foreach ($pagearrays as $pagearray) {
if (!isHiddenPage($pagearray['id'])) // skip hidden pages
$pages[] = $pagearray['id'];
}
}
break;
case 'tagtopic':
if (!$this->taghelper)
$this->taghelper =& plugin_load('helper', 'tag');
if(!$this->taghelper) {
msg('You have to install the tag plugin to use this functionality!', -1);
return array();
}
$tag = $page;
$sect = '';
$pagearrays = $this->taghelper->getTopic('', null, $tag);
foreach ($pagearrays as $pagearray) {
$pages[] = $pagearray['id'];
}
break;
default:
$page = $this->_apply_macro($page, $parent_id);
resolve_pageid(getNS($parent_id), $page, $exists); // resolve shortcuts and clean ID
if (auth_quickaclcheck($page) >= AUTH_READ)
$pages[] = $page;
}
if (count($pages) > 1) {
if ($flags['order'] === 'id') {
if ($flags['rsort']) {
usort($pages, array($this, '_r_strnatcasecmp'));
} else {
natcasesort($pages);
}
} else {
$ordered_pages = array();
foreach ($pages as $page) {
$key = '';
switch ($flags['order']) {
case 'title':
$key = p_get_first_heading($page);
break;
case 'created':
$key = p_get_metadata($page, 'date created', METADATA_DONT_RENDER);
break;
case 'modified':
$key = p_get_metadata($page, 'date modified', METADATA_DONT_RENDER);
break;
case 'indexmenu':
$key = p_get_metadata($page, 'indexmenu_n', METADATA_RENDER_USING_SIMPLE_CACHE);
if ($key === null)
$key = '';
break;
case 'custom':
$key = p_get_metadata($page, 'include_n', METADATA_RENDER_USING_SIMPLE_CACHE);
if ($key === null)
$key = '';
break;
}
$key .= '_'.$page;
$ordered_pages[$key] = $page;
}
if ($flags['rsort']) {
uksort($ordered_pages, array($this, '_r_strnatcasecmp'));
} else {
uksort($ordered_pages, 'strnatcasecmp');
}
$pages = $ordered_pages;
}
}
$result = array();
foreach ($pages as $page) {
$exists = page_exists($page);
$result[] = array('id' => $page, 'exists' => $exists, 'parent_id' => $parent_id);
}
return $result;
}
/**
* String comparisons using a "natural order" algorithm in reverse order
*
* @link http://php.net/manual/en/function.strnatcmp.php
* @param string $a First string
* @param string $b Second string
* @return int Similar to other string comparison functions, this one returns < 0 if
* str1 is greater than str2; >
* 0 if str1 is lesser than
* str2, and 0 if they are equal.
*/
function _r_strnatcasecmp($a, $b) {
return strnatcasecmp($b, $a);
}
/**
* This function generates the list of all included pages from a list of metadata
* instructions.
*/
function _get_included_pages_from_meta_instructions($instructions) {
$pages = array();
foreach ($instructions as $instruction) {
$mode = $instruction['mode'];
$page = $instruction['page'];
$sect = $instruction['sect'];
$parent_id = $instruction['parent_id'];
$flags = $instruction['flags'];
$pages = array_merge($pages, $this->_get_included_pages($mode, $page, $sect, $parent_id, $flags));
}
return $pages;
}
/**
* Get wiki language from "HTTP_ACCEPT_LANGUAGE"
* We allow the pattern e.g. "ja,en-US;q=0.7,en;q=0.3"
*/
function _get_language_of_wiki($id, $parent_id) {
global $conf;
$result = $conf['lang'];
if(strpos($id, '@BROWSER_LANG@') !== false){
$brlangp = "/([a-zA-Z]{1,8}(-[a-zA-Z]{1,8})*|\*)(;q=(0(.[0-9]{0,3})?|1(.0{0,3})?))?/";
if(preg_match_all(
$brlangp, $_SERVER["HTTP_ACCEPT_LANGUAGE"],
$matches, PREG_SET_ORDER
)){
$langs = array();
foreach($matches as $match){
$langname = $match[1] == '*' ? $conf['lang'] : $match[1];
$qvalue = $match[4] == '' ? 1.0 : $match[4];
$langs[$langname] = $qvalue;
}
arsort($langs);
foreach($langs as $lang => $langq){
$testpage = $this->_apply_macro(str_replace('@BROWSER_LANG@', $lang, $id), $parent_id);
resolve_pageid(getNS($parent_id), $testpage, $exists);
if($exists){
$result = $lang;
break;
}
}
}
}
return cleanID($result);
}
/**
* Makes user or date dependent includes possible
*/
function _apply_macro($id, $parent_id) {
global $INFO;
global $auth;
// if we don't have an auth object, do nothing
if (!$auth) return $id;
$user = $_SERVER['REMOTE_USER'];
$group = $INFO['userinfo']['grps'][0];
// set group for unregistered users
if (!isset($group)) {
$group = 'ALL';
}
$time_stamp = time();
if(preg_match('/@DATE(\w+)@/',$id,$matches)) {
switch($matches[1]) {
case 'PMONTH':
$time_stamp = strtotime("-1 month");
break;
case 'NMONTH':
$time_stamp = strtotime("+1 month");
break;
case 'NWEEK':
$time_stamp = strtotime("+1 week");
break;
case 'PWEEK':
$time_stamp = strtotime("-1 week");
break;
case 'TOMORROW':
$time_stamp = strtotime("+1 day");
break;