getresponse / includes / classes / Mustache / Context.php

Context.php in GetResponse Forms by Optin Cat 1.5.4, at includes/classes/Mustache/Context.php

155 lines 4.5 KB

Raw Download Zip

1	<?php
2
3	/*
4	* This file is part of Mustache.php.
5	*
6	* (c) 2010-2014 Justin Hileman
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11
12	/**
13	* Mustache Template rendering Context.
14	*/
15	class Mustache_Context
16	{
17	private $stack = array();
18
19	/**
20	* Mustache rendering Context constructor.
21	*
22	* @param mixed $context Default rendering context (default: null)
23	*/
24	public function __construct($context = null)
25	{
26	if ($context !== null) {
27	$this->stack = array($context);
28	}
29	}
30
31	/**
32	* Push a new Context frame onto the stack.
33	*
34	* @param mixed $value Object or array to use for context
35	*/
36	public function push($value)
37	{
38	array_push($this->stack, $value);
39	}
40
41	/**
42	* Pop the last Context frame from the stack.
43	*
44	* @return mixed Last Context frame (object or array)
45	*/
46	public function pop()
47	{
48	return array_pop($this->stack);
49	}
50
51	/**
52	* Get the last Context frame.
53	*
54	* @return mixed Last Context frame (object or array)
55	*/
56	public function last()
57	{
58	return end($this->stack);
59	}
60
61	/**
62	* Find a variable in the Context stack.
63	*
64	* Starting with the last Context frame (the context of the innermost section), and working back to the top-level
65	* rendering context, look for a variable with the given name:
66	*
67	* * If the Context frame is an associative array which contains the key $id, returns the value of that element.
68	* * If the Context frame is an object, this will check first for a public method, then a public property named
69	* $id. Failing both of these, it will try `__isset` and `__get` magic methods.
70	* * If a value named $id is not found in any Context frame, returns an empty string.
71	*
72	* @param string $id Variable name
73	*
74	* @return mixed Variable value, or '' if not found
75	*/
76	public function find($id)
77	{
78	return $this->findVariableInStack($id, $this->stack);
79	}
80
81	/**
82	* Find a 'dot notation' variable in the Context stack.
83	*
84	* Note that dot notation traversal bubbles through scope differently than the regular find method. After finding
85	* the initial chunk of the dotted name, each subsequent chunk is searched for only within the value of the previous
86	* result. For example, given the following context stack:
87	*
88	* $data = array(
89	* 'name' => 'Fred',
90	* 'child' => array(
91	* 'name' => 'Bob'
92	* ),
93	* );
94	*
95	* ... and the Mustache following template:
96	*
97	* {{ child.name }}
98	*
99	* ... the `name` value is only searched for within the `child` value of the global Context, not within parent
100	* Context frames.
101	*
102	* @param string $id Dotted variable selector
103	*
104	* @return mixed Variable value, or '' if not found
105	*/
106	public function findDot($id)
107	{
108	$chunks = explode('.', $id);
109	$first = array_shift($chunks);
110	$value = $this->findVariableInStack($first, $this->stack);
111
112	foreach ($chunks as $chunk) {
113	if ($value === '') {
114	return $value;
115	}
116
117	$value = $this->findVariableInStack($chunk, array($value));
118	}
119
120	return $value;
121	}
122
123	/**
124	* Helper function to find a variable in the Context stack.
125	*
126	* @see Mustache_Context::find
127	*
128	* @param string $id Variable name
129	* @param array $stack Context stack
130	*
131	* @return mixed Variable value, or '' if not found
132	*/
133	private function findVariableInStack($id, array $stack)
134	{
135	for ($i = count($stack) - 1; $i >= 0; $i--) {
136	if (is_object($stack[$i]) && !($stack[$i] instanceof Closure)) {
137
138	// Note that is_callable() will not work here
139	// See https://github.com/bobthecow/mustache.php/wiki/Magic-Methods
140	if (method_exists($stack[$i], $id)) {
141	return $stack[$i]->$id();
142	} elseif (isset($stack[$i]->$id)) {
143	return $stack[$i]->$id;
144	} elseif ($stack[$i] instanceof ArrayAccess && isset($stack[$i][$id])) {
145	return $stack[$i][$id];
146	}
147	} elseif (is_array($stack[$i]) && array_key_exists($id, $stack[$i])) {
148	return $stack[$i][$id];
149	}
150	}
151
152	return '';
153	}
154	}
155