mirror of
https://github.com/OpenXE-org/OpenXE.git
synced 2024-11-15 04:27:14 +01:00
674 lines
20 KiB
PHP
674 lines
20 KiB
PHP
<?php
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namespace Sabre\VObject;
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use Sabre\Xml;
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/**
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* Component.
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*
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* A component represents a group of properties, such as VCALENDAR, VEVENT, or
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* VCARD.
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*
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* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
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* @author Evert Pot (http://evertpot.com/)
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* @license http://sabre.io/license/ Modified BSD License
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*/
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class Component extends Node
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{
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/**
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* Component name.
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*
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* This will contain a string such as VEVENT, VTODO, VCALENDAR, VCARD.
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*
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* @var string
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*/
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public $name;
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/**
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* A list of properties and/or sub-components.
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*
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* @var array
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*/
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protected $children = [];
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/**
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* Creates a new component.
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*
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* You can specify the children either in key=>value syntax, in which case
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* properties will automatically be created, or you can just pass a list of
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* Component and Property object.
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*
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* By default, a set of sensible values will be added to the component. For
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* an iCalendar object, this may be something like CALSCALE:GREGORIAN. To
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* ensure that this does not happen, set $defaults to false.
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*
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* @param Document $root
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* @param string $name such as VCALENDAR, VEVENT
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* @param array $children
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* @param bool $defaults
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*/
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public function __construct(Document $root, $name, array $children = [], $defaults = true)
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{
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$this->name = strtoupper($name);
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$this->root = $root;
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if ($defaults) {
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// This is a terribly convoluted way to do this, but this ensures
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// that the order of properties as they are specified in both
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// defaults and the childrens list, are inserted in the object in a
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// natural way.
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$list = $this->getDefaults();
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$nodes = [];
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foreach ($children as $key => $value) {
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if ($value instanceof Node) {
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if (isset($list[$value->name])) {
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unset($list[$value->name]);
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}
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$nodes[] = $value;
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} else {
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$list[$key] = $value;
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}
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}
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foreach ($list as $key => $value) {
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$this->add($key, $value);
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}
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foreach ($nodes as $node) {
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$this->add($node);
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}
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} else {
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foreach ($children as $k => $child) {
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if ($child instanceof Node) {
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// Component or Property
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$this->add($child);
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} else {
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// Property key=>value
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$this->add($k, $child);
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}
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}
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}
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}
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/**
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* Adds a new property or component, and returns the new item.
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*
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* This method has 3 possible signatures:
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*
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* add(Component $comp) // Adds a new component
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* add(Property $prop) // Adds a new property
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* add($name, $value, array $parameters = []) // Adds a new property
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* add($name, array $children = []) // Adds a new component
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* by name.
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*
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* @return Node
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*/
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public function add()
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{
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$arguments = func_get_args();
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if ($arguments[0] instanceof Node) {
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if (isset($arguments[1])) {
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throw new \InvalidArgumentException('The second argument must not be specified, when passing a VObject Node');
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}
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$arguments[0]->parent = $this;
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$newNode = $arguments[0];
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} elseif (is_string($arguments[0])) {
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$newNode = call_user_func_array([$this->root, 'create'], $arguments);
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} else {
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throw new \InvalidArgumentException('The first argument must either be a \\Sabre\\VObject\\Node or a string');
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}
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$name = $newNode->name;
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if (isset($this->children[$name])) {
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$this->children[$name][] = $newNode;
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} else {
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$this->children[$name] = [$newNode];
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}
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return $newNode;
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}
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/**
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* This method removes a component or property from this component.
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*
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* You can either specify the item by name (like DTSTART), in which case
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* all properties/components with that name will be removed, or you can
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* pass an instance of a property or component, in which case only that
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* exact item will be removed.
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*
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* @param string|Property|Component $item
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*/
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public function remove($item)
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{
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if (is_string($item)) {
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// If there's no dot in the name, it's an exact property name and
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// we can just wipe out all those properties.
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//
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if (false === strpos($item, '.')) {
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unset($this->children[strtoupper($item)]);
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return;
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}
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// If there was a dot, we need to ask select() to help us out and
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// then we just call remove recursively.
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foreach ($this->select($item) as $child) {
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$this->remove($child);
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}
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} else {
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foreach ($this->select($item->name) as $k => $child) {
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if ($child === $item) {
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unset($this->children[$item->name][$k]);
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return;
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}
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}
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}
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throw new \InvalidArgumentException('The item you passed to remove() was not a child of this component');
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}
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/**
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* Returns a flat list of all the properties and components in this
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* component.
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*
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* @return array
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*/
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public function children()
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{
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$result = [];
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foreach ($this->children as $childGroup) {
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$result = array_merge($result, $childGroup);
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}
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return $result;
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}
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/**
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* This method only returns a list of sub-components. Properties are
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* ignored.
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*
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* @return array
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*/
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public function getComponents()
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{
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$result = [];
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foreach ($this->children as $childGroup) {
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foreach ($childGroup as $child) {
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if ($child instanceof self) {
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$result[] = $child;
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}
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}
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}
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return $result;
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}
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/**
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* Returns an array with elements that match the specified name.
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*
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* This function is also aware of MIME-Directory groups (as they appear in
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* vcards). This means that if a property is grouped as "HOME.EMAIL", it
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* will also be returned when searching for just "EMAIL". If you want to
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* search for a property in a specific group, you can select on the entire
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* string ("HOME.EMAIL"). If you want to search on a specific property that
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* has not been assigned a group, specify ".EMAIL".
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*
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* @param string $name
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*
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* @return array
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*/
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public function select($name)
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{
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$group = null;
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$name = strtoupper($name);
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if (false !== strpos($name, '.')) {
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list($group, $name) = explode('.', $name, 2);
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}
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if ('' === $name) {
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$name = null;
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}
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if (!is_null($name)) {
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$result = isset($this->children[$name]) ? $this->children[$name] : [];
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if (is_null($group)) {
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return $result;
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} else {
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// If we have a group filter as well, we need to narrow it down
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// more.
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return array_filter(
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$result,
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function ($child) use ($group) {
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return $child instanceof Property && strtoupper($child->group) === $group;
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}
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);
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}
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}
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// If we got to this point, it means there was no 'name' specified for
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// searching, implying that this is a group-only search.
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$result = [];
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foreach ($this->children as $childGroup) {
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foreach ($childGroup as $child) {
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if ($child instanceof Property && strtoupper($child->group) === $group) {
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$result[] = $child;
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}
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}
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}
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return $result;
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}
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/**
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* Turns the object back into a serialized blob.
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*
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* @return string
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*/
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public function serialize()
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{
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$str = 'BEGIN:'.$this->name."\r\n";
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/**
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* Gives a component a 'score' for sorting purposes.
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*
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* This is solely used by the childrenSort method.
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*
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* A higher score means the item will be lower in the list.
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* To avoid score collisions, each "score category" has a reasonable
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* space to accommodate elements. The $key is added to the $score to
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* preserve the original relative order of elements.
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*
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* @param int $key
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* @param array $array
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*
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* @return int
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*/
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$sortScore = function ($key, $array) {
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if ($array[$key] instanceof Component) {
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// We want to encode VTIMEZONE first, this is a personal
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// preference.
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if ('VTIMEZONE' === $array[$key]->name) {
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$score = 300000000;
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return $score + $key;
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} else {
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$score = 400000000;
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return $score + $key;
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}
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} else {
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// Properties get encoded first
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// VCARD version 4.0 wants the VERSION property to appear first
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if ($array[$key] instanceof Property) {
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if ('VERSION' === $array[$key]->name) {
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$score = 100000000;
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return $score + $key;
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} else {
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// All other properties
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$score = 200000000;
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return $score + $key;
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}
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}
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}
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};
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$children = $this->children();
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$tmp = $children;
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uksort(
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$children,
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function ($a, $b) use ($sortScore, $tmp) {
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$sA = $sortScore($a, $tmp);
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$sB = $sortScore($b, $tmp);
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return $sA - $sB;
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}
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);
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foreach ($children as $child) {
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$str .= $child->serialize();
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}
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$str .= 'END:'.$this->name."\r\n";
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return $str;
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}
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/**
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* This method returns an array, with the representation as it should be
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* encoded in JSON. This is used to create jCard or jCal documents.
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*
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* @return array
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*/
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public function jsonSerialize()
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{
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$components = [];
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$properties = [];
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foreach ($this->children as $childGroup) {
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foreach ($childGroup as $child) {
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if ($child instanceof self) {
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$components[] = $child->jsonSerialize();
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} else {
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$properties[] = $child->jsonSerialize();
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}
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}
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}
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return [
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strtolower($this->name),
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$properties,
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$components,
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];
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}
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/**
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* This method serializes the data into XML. This is used to create xCard or
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* xCal documents.
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*
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* @param Xml\Writer $writer XML writer
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*/
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public function xmlSerialize(Xml\Writer $writer)
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{
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$components = [];
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$properties = [];
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foreach ($this->children as $childGroup) {
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foreach ($childGroup as $child) {
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if ($child instanceof self) {
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$components[] = $child;
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} else {
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$properties[] = $child;
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}
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}
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}
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$writer->startElement(strtolower($this->name));
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if (!empty($properties)) {
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$writer->startElement('properties');
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foreach ($properties as $property) {
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$property->xmlSerialize($writer);
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}
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$writer->endElement();
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}
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if (!empty($components)) {
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$writer->startElement('components');
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foreach ($components as $component) {
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$component->xmlSerialize($writer);
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}
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$writer->endElement();
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}
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$writer->endElement();
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}
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/**
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* This method should return a list of default property values.
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*
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* @return array
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*/
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protected function getDefaults()
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{
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return [];
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}
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/* Magic property accessors {{{ */
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/**
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* Using 'get' you will either get a property or component.
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*
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* If there were no child-elements found with the specified name,
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* null is returned.
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*
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* To use this, this may look something like this:
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*
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* $event = $calendar->VEVENT;
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*
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* @param string $name
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*
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* @return Property
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*/
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public function __get($name)
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{
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if ('children' === $name) {
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throw new \RuntimeException('Starting sabre/vobject 4.0 the children property is now protected. You should use the children() method instead');
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}
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$matches = $this->select($name);
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if (0 === count($matches)) {
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return;
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} else {
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$firstMatch = current($matches);
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/* @var $firstMatch Property */
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$firstMatch->setIterator(new ElementList(array_values($matches)));
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return $firstMatch;
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}
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}
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/**
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* This method checks if a sub-element with the specified name exists.
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*
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* @param string $name
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*
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* @return bool
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*/
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public function __isset($name)
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{
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$matches = $this->select($name);
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return count($matches) > 0;
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}
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/**
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* Using the setter method you can add properties or subcomponents.
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*
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* You can either pass a Component, Property
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* object, or a string to automatically create a Property.
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*
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* If the item already exists, it will be removed. If you want to add
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* a new item with the same name, always use the add() method.
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*
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* @param string $name
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* @param mixed $value
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*/
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public function __set($name, $value)
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{
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$name = strtoupper($name);
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$this->remove($name);
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if ($value instanceof self || $value instanceof Property) {
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$this->add($value);
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} else {
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$this->add($name, $value);
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}
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}
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/**
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* Removes all properties and components within this component with the
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* specified name.
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*
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* @param string $name
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*/
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public function __unset($name)
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{
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$this->remove($name);
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}
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/* }}} */
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/**
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* This method is automatically called when the object is cloned.
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* Specifically, this will ensure all child elements are also cloned.
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*/
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public function __clone()
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{
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foreach ($this->children as $childName => $childGroup) {
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foreach ($childGroup as $key => $child) {
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$clonedChild = clone $child;
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$clonedChild->parent = $this;
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$clonedChild->root = $this->root;
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$this->children[$childName][$key] = $clonedChild;
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}
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}
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}
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/**
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* A simple list of validation rules.
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*
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* This is simply a list of properties, and how many times they either
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* must or must not appear.
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*
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* Possible values per property:
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* * 0 - Must not appear.
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* * 1 - Must appear exactly once.
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* * + - Must appear at least once.
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* * * - Can appear any number of times.
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* * ? - May appear, but not more than once.
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*
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* It is also possible to specify defaults and severity levels for
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* violating the rule.
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*
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* See the VEVENT implementation for getValidationRules for a more complex
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* example.
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*
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* @var array
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*/
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public function getValidationRules()
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{
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return [];
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}
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/**
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* Validates the node for correctness.
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*
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* The following options are supported:
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* Node::REPAIR - May attempt to automatically repair the problem.
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* Node::PROFILE_CARDDAV - Validate the vCard for CardDAV purposes.
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* Node::PROFILE_CALDAV - Validate the iCalendar for CalDAV purposes.
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*
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* This method returns an array with detected problems.
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* Every element has the following properties:
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*
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* * level - problem level.
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* * message - A human-readable string describing the issue.
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* * node - A reference to the problematic node.
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*
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* The level means:
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* 1 - The issue was repaired (only happens if REPAIR was turned on).
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* 2 - A warning.
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* 3 - An error.
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*
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* @param int $options
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*
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* @return array
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*/
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public function validate($options = 0)
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{
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$rules = $this->getValidationRules();
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$defaults = $this->getDefaults();
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$propertyCounters = [];
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$messages = [];
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foreach ($this->children() as $child) {
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$name = strtoupper($child->name);
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if (!isset($propertyCounters[$name])) {
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$propertyCounters[$name] = 1;
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} else {
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++$propertyCounters[$name];
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}
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$messages = array_merge($messages, $child->validate($options));
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}
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foreach ($rules as $propName => $rule) {
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switch ($rule) {
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case '0':
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if (isset($propertyCounters[$propName])) {
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$messages[] = [
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'level' => 3,
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|
'message' => $propName.' MUST NOT appear in a '.$this->name.' component',
|
|
'node' => $this,
|
|
];
|
|
}
|
|
break;
|
|
case '1':
|
|
if (!isset($propertyCounters[$propName]) || 1 !== $propertyCounters[$propName]) {
|
|
$repaired = false;
|
|
if ($options & self::REPAIR && isset($defaults[$propName])) {
|
|
$this->add($propName, $defaults[$propName]);
|
|
$repaired = true;
|
|
}
|
|
$messages[] = [
|
|
'level' => $repaired ? 1 : 3,
|
|
'message' => $propName.' MUST appear exactly once in a '.$this->name.' component',
|
|
'node' => $this,
|
|
];
|
|
}
|
|
break;
|
|
case '+':
|
|
if (!isset($propertyCounters[$propName]) || $propertyCounters[$propName] < 1) {
|
|
$messages[] = [
|
|
'level' => 3,
|
|
'message' => $propName.' MUST appear at least once in a '.$this->name.' component',
|
|
'node' => $this,
|
|
];
|
|
}
|
|
break;
|
|
case '*':
|
|
break;
|
|
case '?':
|
|
if (isset($propertyCounters[$propName]) && $propertyCounters[$propName] > 1) {
|
|
$level = 3;
|
|
|
|
// We try to repair the same property appearing multiple times with the exact same value
|
|
// by removing the duplicates and keeping only one property
|
|
if ($options & self::REPAIR) {
|
|
$properties = array_unique($this->select($propName), SORT_REGULAR);
|
|
|
|
if (1 === count($properties)) {
|
|
$this->remove($propName);
|
|
$this->add($properties[0]);
|
|
|
|
$level = 1;
|
|
}
|
|
}
|
|
|
|
$messages[] = [
|
|
'level' => $level,
|
|
'message' => $propName.' MUST NOT appear more than once in a '.$this->name.' component',
|
|
'node' => $this,
|
|
];
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $messages;
|
|
}
|
|
|
|
/**
|
|
* Call this method on a document if you're done using it.
|
|
*
|
|
* It's intended to remove all circular references, so PHP can easily clean
|
|
* it up.
|
|
*/
|
|
public function destroy()
|
|
{
|
|
parent::destroy();
|
|
foreach ($this->children as $childGroup) {
|
|
foreach ($childGroup as $child) {
|
|
$child->destroy();
|
|
}
|
|
}
|
|
$this->children = [];
|
|
}
|
|
}
|