bludit/bl-kernel/dbpages.class.php

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<?php defined('BLUDIT') or die('Bludit CMS.');
class dbPages extends dbJSON {
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private $parentKeyList = array();
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private $dbFields = array(
'title'=>'',
'description'=>'',
'username'=>'',
'tags'=>array(),
'type'=>'published', // published, draft, sticky, scheduled
'date'=>'',
'dateModified'=>'',
'position'=>0,
'coverImage'=>'',
'category'=>'',
'md5file'=>'',
'uuid'=>'',
'allowComments'=>true,
'template'=>'',
'noindex'=>false,
'nofollow'=>false,
'noarchive'=>false
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);
function __construct()
{
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parent::__construct(DB_PAGES);
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}
public function getDefaultFields()
{
return $this->dbFields;
}
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// Return an array with the database for a page, FALSE otherwise
public function getPageDB($key)
{
if ($this->exists($key)) {
return $this->db[$key];
}
return false;
}
// Return TRUE if the page exists, FALSE otherwise
public function exists($key)
{
return isset( $this->db[$key] );
}
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// Create a new page
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// This function returns the key of the new page
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public function add($args, $climode=false)
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{
$row = array();
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// Check values on args and set default values if not exists
foreach ($this->dbFields as $field=>$value) {
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if ($field=='tags') {
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if (!empty($args['tags'])) {
$finalValue = $this->generateTags($args['tags']);
}
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} elseif (isset($args[$field])) {
// Sanitize if will be stored on database
$finalValue = Sanitize::html($args[$field]);
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} else {
// Default value for the field if not defined
$finalValue = $value;
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}
settype($finalValue, gettype($value));
$row[$field] = $finalValue;
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}
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// Content
// This variable is not belong to the database so is not defined in $row
$contentRaw = $args['content'];
// Parent
// This variable is not belong to the database so is not defined in $row
$parent = '';
if (!empty($args['parent'])) {
$parent = $args['parent'];
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}
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// Slug from the title or the content
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// This variable is not belong to the database so is not defined in $row
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if (empty($args['slug'])) {
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if (!empty($row['title'])) {
$slug = $this->generateSlug($row['title']);
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} else {
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$slug = $this->generateSlug($contentRaw);
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}
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} else {
$slug = $args['slug'];
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}
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// Generate key
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// This variable is not belong to the database so is not defined in $row
$key = $this->generateKey($slug, $parent);
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// Generate UUID
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if (empty($row['uuid'])) {
$row['uuid'] = $this->generateUUID();
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}
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// Validate date
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if (!Valid::date($row['date'], DB_DATE_FORMAT)) {
$row['date'] = Date::current(DB_DATE_FORMAT);
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}
// Schedule page
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if (($row['date']>Date::current(DB_DATE_FORMAT)) && ($row['type']=='published')) {
$row['type'] = 'scheduled';
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}
if ($climode===false) {
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// Create the directory
if( Filesystem::mkdir(PATH_PAGES.$key, true) === false ) {
Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to create the directory ['.PATH_PAGES.$key.']',LOG_TYPE_ERROR);
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return false;
}
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// Create the index.txt and save the file
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if( file_put_contents(PATH_PAGES.$key.DS.FILENAME, $contentRaw) === false ) {
Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to create the content in the file ['.FILENAME.']',LOG_TYPE_ERROR);
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return false;
}
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}
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// Checksum MD5
$row['md5file'] = md5_file(PATH_PAGES.$key.DS.FILENAME);
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// Insert in database
$this->db[$key] = $row;
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// Sort database
$this->sortBy();
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// Save database
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$this->save();
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return $key;
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}
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public function edit($args, $climode=false)
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{
$row = array();
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// Check values on args or set default values
foreach ($this->dbFields as $field=>$value) {
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if ($field=='tags') {
$finalValue = $this->generateTags($args['tags']);
} elseif (isset($args[$field])) {
// Sanitize if will be stored on database
$finalValue = Sanitize::html($args[$field]);
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} else {
// Default value for the field if not defined
$finalValue = $value;
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}
settype($finalValue, gettype($value));
$row[$field] = $finalValue;
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}
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// Content
// This variable is not belong to the database so is not defined in $row
$contentRaw = $args['content'];
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// Parent
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// This variable is not belong to the database so is not defined in $row
$parent = '';
if (!empty($args['parent'])) {
$parent = $args['parent'];
}
// Old key
// This variable is not belong to the database so is not defined in $row
$key = $args['key'];
// Slug from the title or the content
// This variable is not belong to the database so is not defined in $row
if (empty($args['slug'])) {
if (!empty($row['title'])) {
$slug = $this->generateSlug($row['title']);
} else {
$slug = $this->generateSlug($contentRaw);
}
} else {
$slug = $args['slug'];
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}
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// New key
// This variable is not belong to the database so is not defined in $row
$newKey = $this->generateKey($slug, $parent, false, $key);
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// If the page is draft then the created time is the current
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if ($this->db[$key]['type']=='draft') {
$row['date'] = Date::current(DB_DATE_FORMAT);
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} elseif (!Valid::date($row['date'], DB_DATE_FORMAT)) {
$row['date'] = $this->db[$key]['date'];
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}
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// Modified date
$row['dateModified'] = Date::current(DB_DATE_FORMAT);
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// Schedule page
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if (($row['date']>Date::current(DB_DATE_FORMAT)) && ($row['type']=='published')) {
$row['type'] = 'scheduled';
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}
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if ($climode===false) {
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// Move the directory from old key to new key.
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if ($newKey!==$key) {
if( Filesystem::mv(PATH_PAGES.$key, PATH_PAGES.$newKey) === false ) {
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to move the directory to '.PATH_PAGES.$newKey);
return false;
}
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}
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// Make the index.txt and save the file.
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if (file_put_contents(PATH_PAGES.$newKey.DS.FILENAME, $contentRaw)===false) {
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to put the content in the file '.FILENAME);
return false;
}
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}
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// Remove the old key
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unset( $this->db[$key] );
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// Reindex Orphan Children
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$this->reindexChildren($key, $newKey);
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// Checksum MD5
$row['md5file'] = md5_file(PATH_PAGES.$newKey.DS.FILENAME);
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// Insert in database
$this->db[$newKey] = $row;
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// Sort database
$this->sortBy();
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// Save database
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$this->save();
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return $newKey;
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}
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// This function reindex the orphan children with the new parent key
// If a page has subpages and the page change his key is necesarry check the children key
public function reindexChildren($oldParentKey, $newParentKey) {
if ($oldParentKey==$newParentKey){
return false;
}
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$tmp = $this->db;
foreach ($tmp as $key=>$fields) {
if (Text::startsWith($key, $oldParentKey.'/')) {
$newKey = Text::replace($oldParentKey.'/', $newParentKey.'/', $key);
$this->db[$newKey] = $this->db[$key];
unset($this->db[$key]);
}
}
}
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public function delete($key)
{
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// This is need it, because if the key is empty the Filesystem::deleteRecursive is going to delete PATH_PAGES
if (empty($key)) {
return false;
}
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// Page doesn't exist in database
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if (!$this->exists($key)) {
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Log::set(__METHOD__.LOG_SEP.'The page does not exist. Key: '.$key);
}
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// Delete directory and files
if (Filesystem::deleteRecursive(PATH_PAGES.$key) === false) {
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to delete the directory '.PATH_PAGES.$key);
}
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// Remove from database
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unset($this->db[$key]);
// Save the database.
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if ($this->save()===false) {
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Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to save the database file.');
}
return true;
}
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// Delete all pages from a user
public function deletePagesByUser($args)
{
$username = $args['username'];
foreach ($this->db as $key=>$fields) {
if ($fields['username']===$username) {
$this->delete($key);
}
}
return true;
}
// Link all pages to a new user
public function transferPages($args)
{
$oldUsername = $args['oldUsername'];
$newUsername = isset($args['newUsername']) ? $args['newUsername'] : 'admin';
foreach ($this->db as $key=>$fields) {
if ($fields['username']===$oldUsername) {
$this->db[$key]['username'] = $newUsername;
}
}
return $this->save();
}
// Set field = value
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public function setField($key, $field, $value)
{
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if ($this->exists($key)) {
settype($value, gettype($this->dbFields[$field]));
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$this->db[$key][$field] = $value;
return $this->save();
}
return false;
}
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// Returns a database with published pages keys
public function getPublishedDB($onlyKeys=true)
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{
$tmp = $this->db;
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foreach ($tmp as $key=>$fields) {
if ($fields['type']!='published') {
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unset($tmp[$key]);
}
}
if ($onlyKeys) {
return array_keys($tmp);
}
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return $tmp;
}
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// Returns an array with a list of keys/database of static pages
// By default the static pages are sort by position
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public function getStaticDB($onlyKeys=true)
{
$tmp = $this->db;
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foreach ($tmp as $key=>$fields) {
if ($fields['type']!='static') {
unset($tmp[$key]);
}
}
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uasort($tmp, array($this, 'sortByPositionLowToHigh'));
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if ($onlyKeys) {
return array_keys($tmp);
}
return $tmp;
}
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// Returns an array with a list of keys/database of draft pages
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public function getDraftDB($onlyKeys=true)
{
$tmp = $this->db;
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foreach ($tmp as $key=>$fields) {
if($fields['type']!='draft') {
unset($tmp[$key]);
}
}
if ($onlyKeys) {
return array_keys($tmp);
}
return $tmp;
}
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// Returns an array with a list of keys/database of scheduled pages
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public function getScheduledDB($onlyKeys=true)
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{
$tmp = $this->db;
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foreach ($tmp as $key=>$fields) {
if($fields['type']!='scheduled') {
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unset($tmp[$key]);
}
}
if ($onlyKeys) {
return array_keys($tmp);
}
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return $tmp;
}
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// Returns an array with a list of keys of sticky pages
public function getStickyDB($onlyKeys=true)
{
$tmp = $this->db;
foreach ($tmp as $key=>$fields) {
if($fields['type']!='sticky') {
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unset($tmp[$key]);
}
}
if ($onlyKeys) {
return array_keys($tmp);
}
return $tmp;
}
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// Returns the next number of the bigger position
public function nextPositionNumber()
{
$tmp = 1;
foreach ($this->db as $key=>$fields) {
if ($fields['position']>$tmp) {
$tmp = $fields['position'];
}
}
return ++$tmp;
}
// Returns the next page key of the current page key
public function nextPageKey($currentKey)
{
if ($this->db[$currentKey]['type']=='published') {
$keys = array_keys($this->db);
$position = array_search($currentKey, $keys) - 1;
if (isset($keys[$position])) {
$nextKey = $keys[$position];
if ($this->db[$nextKey]['type']=='published') {
return $nextKey;
}
}
}
return false;
}
// Returns the previous page key of the current page key
public function previousPageKey($currentKey)
{
if ($this->db[$currentKey]['type']=='published') {
$keys = array_keys($this->db);
$position = array_search($currentKey, $keys) + 1;
if (isset($keys[$position])) {
$prevKey = $keys[$position];
if ($this->db[$prevKey]['type']=='published') {
return $prevKey;
}
}
}
return false;
}
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// Returns an array with a list of key of pages, FALSE if out of range
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// The database is sorted by date or by position
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// (int) $pageNumber, the page number
// (int) $amountOfItems, amount of items to return, if -1 returns all the items
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// (boolean) $onlyPublished, TRUE to return only published pages
public function getList($pageNumber, $amountOfItems, $onlyPublished=true)
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{
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$db = array_keys($this->db);
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if ($onlyPublished) {
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$db = $this->getPublishedDB(true);
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}
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if ($amountOfItems==-1) {
return $db;
}
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// The first page number is 1, so the real is 0
$realPageNumber = $pageNumber - 1;
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$total = count($db);
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$init = (int) $amountOfItems * $realPageNumber;
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$end = (int) min( ($init + $amountOfItems - 1), $total );
$outrange = $init<0 ? true : $init>$end;
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if (!$outrange) {
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return array_slice($db, $init, $amountOfItems, true);
}
return false;
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}
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// Returns the amount of pages
// (boolean) $total, TRUE returns the total of pages
// (boolean) $total, FALSE returns the total of published pages (without draft and scheduled)
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public function count($onlyPublished=true)
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{
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if ($onlyPublished) {
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$db = $this->getPublishedDB(false);
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return count($db);
}
return count($this->db);
}
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// Returns an array with all parents pages key. A parent page is not a child
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public function getParents()
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{
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$db = $this->getPublishedDB();
foreach ($db as $key=>$pageKey) {
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// if the key has slash then is a child
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if (Text::stringContains($pageKey, '/')) {
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unset($db[$key]);
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}
}
return $db;
}
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public function getChildren($parentKey)
{
$tmp = $this->db;
$list = array();
foreach ($tmp as $key=>$fields) {
if (Text::startsWith($key, $parentKey.'/')) {
array_push($list, $key);
}
}
return $list;
}
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public function sortBy()
{
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if (ORDER_BY=='date') {
return $this->sortByDate(true);
}
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return $this->sortByPosition(false);
}
// Sort pages by position
public function sortByPosition($HighToLow=false)
{
if($HighToLow) {
uasort($this->db, array($this, 'sortByPositionHighToLow'));
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} else {
uasort($this->db, array($this, 'sortByPositionLowToHigh'));
}
return true;
}
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private function sortByPositionLowToHigh($a, $b)
{
return $a['position']>$b['position'];
}
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private function sortByPositionHighToLow($a, $b)
{
return $a['position']<$b['position'];
}
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// Sort pages by date
public function sortByDate($HighToLow=true)
{
if($HighToLow) {
uasort($this->db, array($this, 'sortByDateHighToLow'));
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} else {
uasort($this->db, array($this, 'sortByDateLowToHigh'));
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}
return true;
}
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private function sortByDateLowToHigh($a, $b)
{
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return $a['date']>$b['date'];
}
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private function sortByDateHighToLow($a, $b)
{
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return $a['date']<$b['date'];
}
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function generateUUID() {
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return md5( uniqid().time() );
}
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// Returns the UUID of a page, by the page key
function getUUID($key)
{
if ($this->exists($key)) {
return $this->db[$key]['uuid'];
}
return false;
}
// Returns the page key by the uuid
function getByUUID($uuid)
{
foreach ($this->db as $key=>$value) {
if ($value['uuid']==$uuid) {
return $key;
}
}
return false;
}
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// Returns string without HTML tags and truncated
private function generateSlug($text, $truncateLength=60) {
$tmpslug = Text::removeHTMLTags($text);
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return Text::truncate($tmpslug, $truncateLength, '');
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}
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// Returns TRUE if there are new pages published, FALSE otherwise
public function scheduler()
{
// Get current date
$currentDate = Date::current(DB_DATE_FORMAT);
$saveDatabase = false;
// The database need to be sorted by date
foreach($this->db as $pageKey=>$fields) {
if($fields['type']=='scheduled') {
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if($fields['date']<=$currentDate) {
$this->db[$pageKey]['type'] = 'published';
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$saveDatabase = true;
}
}
elseif( ($fields['type']=='published') && (ORDER_BY=='date') ) {
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break;
}
}
if($saveDatabase) {
if( $this->save() === false ) {
Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to save the database file.');
return false;
}
Log::set(__METHOD__.LOG_SEP.'New pages published from the scheduler.');
return true;
}
return false;
}
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// Generate a valid Key/Slug
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public function generateKey($text, $parent=false, $returnSlug=false, $oldKey='')
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{
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if (Text::isEmpty($text)) {
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$text = 'empty';
}
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if (Text::isEmpty($parent)) {
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$newKey = Text::cleanUrl($text);
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} else {
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$newKey = Text::cleanUrl($parent).'/'.Text::cleanUrl($text);
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}
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// cleanURL can return empty string
if (Text::isEmpty($newKey)) {
$newKey = 'empty';
}
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if ($newKey!==$oldKey) {
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// Verify if the key is already been used
if( isset($this->db[$newKey]) ) {
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if( !Text::endsWithNumeric($newKey) ) {
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$newKey = $newKey.'-0';
}
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while( isset($this->db[$newKey]) ) {
$newKey++;
}
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}
}
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if ($returnSlug) {
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$explode = explode('/', $newKey);
if(isset($explode[1])) {
return $explode[1];
}
return $explode[0];
}
return $newKey;
}
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public function rescanClimode()
{
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Log::set('CLI MODE'.LOG_SEP.'Starting re-scan on pages directory.');
$pageList = array();
// Search for pages
$directories = Filesystem::listDirectories(PATH_PAGES, $regex='*', $sortByDate=false);
foreach($directories as $directory) {
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if( Sanitize::pathFile($directory.DS.FILENAME) ) {
$pageKey = basename($directory);
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$pageList[$pageKey] = true;
// Search for children pages
$subDirectories = Filesystem::listDirectories(PATH_PAGES.$pageKey.DS, $regex='*', $sortByDate=false);
foreach($subDirectories as $subDirectory) {
if( Sanitize::pathFile($subDirectory.DS.FILENAME) ) {
$subPageKey = basename($subDirectory);
$subPageKey = $pageKey.'/'.$subPageKey;
$pageList[$subPageKey] = true;
}
}
}
}
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Log::set('CLI MODE'.LOG_SEP.'Updating pages...');
$keys = array_keys($pageList);
foreach($keys as $pageKey) {
// Checksum
$checksum = md5_file(PATH_PAGES.$pageKey.DS.FILENAME);
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// New page
if( !isset($this->db[$pageKey]) ) {
$this->verifyFieldsClimode($pageKey, true);
}
// Update page
elseif($this->db[$pageKey]['md5file']!=$checksum) {
$this->verifyFieldsClimode($pageKey, false);
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}
}
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Log::set('CLI MODE'.LOG_SEP.'Removing pages...');
foreach( array_diff_key($this->db, $pageList) as $pageKey=>$data ) {
Log::set('CLI MODE'.LOG_SEP.'Removing page from database, key: '.$pageKey);
unset( $this->db[$pageKey] );
}
$this->save();
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}
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private function verifyFieldsClimode($key, $insert=true)
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{
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$page = new Page($key);
$db = $page->getDB();
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// Content from file
$db['content'] = $db['contentRaw'];
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// Parent
$db['parent'] = '';
$db['slug'] = $key;
$explodeKey = explode('/', $key);
if(isset($explodeKey[1])) {
$db['parent'] = $explodeKey[0];
$db['slug'] = $explodeKey[1];
}
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// Date
if( !isset($db['date']) ) {
$db['date'] = Date::current(DB_DATE_FORMAT);
}
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// Status
if( !isset($db['type']) ) {
$db['type'] = CLI_STATUS;
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}
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// Owner username
if( !isset($db['username']) ) {
$db['username'] = CLI_USERNAME;
}
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// New page or update page
if($insert) {
Log::set('CLI MODE'.LOG_SEP.'New page found, key:'.$key);
return $this->add($db, $climode=true);
} else {
Log::set('CLI MODE'.LOG_SEP.'Different checksum, updating page, key:'.$key);
return $this->edit($db, $climode=true);
}
}
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private function stylingFieldsForFile($field, $value)
{
// Support for Markdown files, good approach for Github
if (FILENAME==='index.md') {
if ($field==='title') {
return '#Title: '.$value;
} elseif ($field==='content') {
return '---'.PHP_EOL.$value;
} else {
return '<!-- '.Text::firstCharUp($field).': '.$value.' -->';
}
}
// Legacy style of Bludit with index.txt
if ($field==='content') {
return 'Content:'.PHP_EOL.$value;
}
return Text::firstCharUp($field).': '.$value;
}
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// Returns an Array, array('tagSlug'=>'tagName')
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// (string) $tags, tag list separated by comma.
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public function generateTags($tags)
{
$tmp = array();
$tags = trim($tags);
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if (empty($tags)) {
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return $tmp;
}
$tags = explode(',', $tags);
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foreach ($tags as $tag) {
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$tag = trim($tag);
$tagKey = Text::cleanUrl($tag);
$tmp[$tagKey] = $tag;
}
return $tmp;
}
// Change all pages with the old category key to the new category key
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public function changeCategory($oldCategoryKey, $newCategoryKey)
{
foreach ($this->db as $key=>$value) {
if ($value['category']===$oldCategoryKey) {
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$this->db[$key]['category'] = $newCategoryKey;
}
}
return $this->save();
}
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}