Added Google API lib
This commit is contained in:
Latif Khalifa
247
htdocs/lib/Google/Model.php
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247
htdocs/lib/Google/Model.php
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<?php
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/*
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* Copyright 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* This class defines attributes, valid values, and usage which is generated
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* from a given json schema.
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* http://tools.ietf.org/html/draft-zyp-json-schema-03#section-5
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*
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* @author Chirag Shah <chirags@google.com>
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*
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*/
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class Google_Model implements ArrayAccess
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{
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protected $data = array();
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protected $processed = array();
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/**
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* Polymorphic - accepts a variable number of arguments dependent
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* on the type of the model subclass.
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*/
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public function __construct()
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{
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if (func_num_args() == 1 && is_array(func_get_arg(0))) {
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// Initialize the model with the array's contents.
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$array = func_get_arg(0);
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$this->mapTypes($array);
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}
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}
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public function __get($key)
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{
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$keyTypeName = $this->keyType($key);
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$keyDataType = $this->dataType($key);
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if (isset($this->$keyTypeName) && !isset($this->processed[$key])) {
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if (isset($this->data[$key])) {
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$val = $this->data[$key];
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} else {
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$val = null;
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}
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if ($this->isAssociativeArray($val)) {
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if (isset($this->$keyDataType) && 'map' == $this->$keyDataType) {
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foreach ($val as $arrayKey => $arrayItem) {
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$this->data[$key][$arrayKey] =
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$this->createObjectFromName($keyTypeName, $arrayItem);
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}
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} else {
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$this->data[$key] = $this->createObjectFromName($keyTypeName, $val);
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}
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} else if (is_array($val)) {
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$arrayObject = array();
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foreach ($val as $arrayIndex => $arrayItem) {
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$arrayObject[$arrayIndex] =
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$this->createObjectFromName($keyTypeName, $arrayItem);
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}
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$this->data[$key] = $arrayObject;
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}
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$this->processed[$key] = true;
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}
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return $this->data[$key];
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}
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/**
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* Initialize this object's properties from an array.
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*
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* @param array $array Used to seed this object's properties.
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* @return void
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*/
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protected function mapTypes($array)
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{
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// Hard initilise simple types, lazy load more complex ones.
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foreach ($array as $key => $val) {
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if ( !property_exists($this, $this->keyType($key)) &&
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property_exists($this, $key)) {
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$this->$key = $val;
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unset($array[$key]);
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} elseif (property_exists($this, $camelKey = Google_Utils::camelCase($key))) {
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// This checks if property exists as camelCase, leaving it in array as snake_case
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// in case of backwards compatibility issues.
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$this->$camelKey = $val;
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}
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}
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$this->data = $array;
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}
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/**
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* Create a simplified object suitable for straightforward
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* conversion to JSON. This is relatively expensive
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* due to the usage of reflection, but shouldn't be called
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* a whole lot, and is the most straightforward way to filter.
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*/
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public function toSimpleObject()
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{
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$object = new stdClass();
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// Process all other data.
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foreach ($this->data as $key => $val) {
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$result = $this->getSimpleValue($val);
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if ($result != null) {
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$object->$key = $result;
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}
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}
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// Process all public properties.
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$reflect = new ReflectionObject($this);
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$props = $reflect->getProperties(ReflectionProperty::IS_PUBLIC);
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foreach ($props as $member) {
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$name = $member->getName();
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$result = $this->getSimpleValue($this->$name);
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if ($result != null) {
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$object->$name = $result;
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}
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}
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return $object;
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}
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/**
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* Handle different types of values, primarily
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* other objects and map and array data types.
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*/
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private function getSimpleValue($value)
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{
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if ($value instanceof Google_Model) {
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return $value->toSimpleObject();
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} else if (is_array($value)) {
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$return = array();
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foreach ($value as $key => $a_value) {
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$a_value = $this->getSimpleValue($a_value);
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if ($a_value != null) {
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$return[$key] = $a_value;
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}
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}
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return $return;
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}
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return $value;
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}
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/**
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* Returns true only if the array is associative.
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* @param array $array
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* @return bool True if the array is associative.
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*/
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protected function isAssociativeArray($array)
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{
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if (!is_array($array)) {
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return false;
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}
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$keys = array_keys($array);
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foreach ($keys as $key) {
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if (is_string($key)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Given a variable name, discover its type.
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*
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* @param $name
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* @param $item
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* @return object The object from the item.
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*/
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private function createObjectFromName($name, $item)
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{
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$type = $this->$name;
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return new $type($item);
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}
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/**
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* Verify if $obj is an array.
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* @throws Google_Exception Thrown if $obj isn't an array.
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* @param array $obj Items that should be validated.
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* @param string $method Method expecting an array as an argument.
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*/
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public function assertIsArray($obj, $method)
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{
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if ($obj && !is_array($obj)) {
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throw new Google_Exception(
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"Incorrect parameter type passed to $method(). Expected an array."
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);
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}
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}
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public function offsetExists($offset)
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{
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return isset($this->$offset) || isset($this->data[$offset]);
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}
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public function offsetGet($offset)
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{
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return isset($this->$offset) ?
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$this->$offset :
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$this->__get($offset);
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}
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public function offsetSet($offset, $value)
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{
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if (property_exists($this, $offset)) {
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$this->$offset = $value;
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} else {
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$this->data[$offset] = $value;
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$this->processed[$offset] = true;
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}
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}
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public function offsetUnset($offset)
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{
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unset($this->data[$offset]);
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}
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protected function keyType($key)
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{
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return $key . "Type";
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}
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protected function dataType($key)
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{
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return $key . "DataType";
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}
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public function __isset($key)
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{
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return isset($this->data[$key]);
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}
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public function __unset($key)
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{
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unset($this->data[$key]);
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}
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}
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