cookiebot / addons / lib / buffer / buffer-output-tag.php

buffer-output-tag.php in Cookiebot by Usercentrics – Automatic Cookie Banner for GDPR/CCPA & Google Consent Mode 3.4.0, at addons/lib/buffer/buffer-output-tag.php

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1	<?php
2
3	namespace cookiebot_addons\lib\buffer;
4
5	class Buffer_Output_Tag implements Buffer_Output_Tag_Interface {
6
7	/**
8	* Hook priority
9	*
10	* @var integer
11	*
12	* @since 1.1.0
13	*/
14	public $priority;
15
16	/**
17	* Hook tag name
18	*
19	* @var string
20	*
21	* @since 1.2.0
22	*/
23	public $tag;
24
25	/**
26	* Keywords to allow in the scripts
27	*
28	* @var array array
29	*
30	* @since 1.2.0
31	*/
32	private $keywords;
33
34	/**
35	* Transient unique name
36	*
37	* @var string
38	*
39	* @since 1.1.0
40	*/
41	private $transient_name;
42
43	/**
44	*
45	* Use transient cache
46	*
47	* @var boolean
48	*
49	* @since 1.2.0
50	*/
51	private $use_cache;
52
53	/**
54	* Cookiebot_Buffer_Output_Tag constructor.
55	*
56	* @param $tag
57	* @param $priority
58	* @param array $keywords
59	* @param boolean $use_cache
60	*
61	* @since 1.2.0
62	*/
63	public function __construct( $tag, $priority, $keywords = array(), $use_cache = true ) {
64	$this->tag = $tag;
65	$this->priority = $priority;
66	$this->keywords = $keywords;
67	$this->use_cache = $use_cache;
68	}
69
70	/**
71	* Merges new keywords in existence keywords variable
72	*
73	* @param $keywords
74	*
75	* @since 1.2.0
76	*/
77	public function merge_keywords( $keywords ) {
78	$this->keywords = array_merge( $this->keywords, $keywords );
79	}
80
81	/**
82	* Start reading the buffer/output
83	*
84	* @since 1.1.0
85	*/
86	public function cookiebot_start_buffer() {
87	ob_start( array( $this, 'manipulate_script' ) );
88	}
89
90	/**
91	* Stop reading the output and output buffered data through manipulate script filter.
92	*
93	* @since 1.1.0
94	*/
95	public function cookiebot_stop_buffer() {
96	ob_end_flush();
97	}
98
99	/**
100	* Manipulate google analytic scripts to cookiebot and return it back
101	*
102	* @param $buffer
103	*
104	* @return null\|string\|string[]
105	*
106	* @since 1.1.0
107	*/
108	public function manipulate_script( $buffer ) {
109	/**
110	* Get wp head scripts from the cache
111	*/
112	if( $this->use_cache ) {
113	$updated_scripts = get_transient( $this->transient_name );
114	}
115
116	/**
117	* If cache is not set then build it
118	*/
119	if ( !$this->use_cache \|\| $updated_scripts === false ) {
120	/**
121	* Get all scripts and add cookieconsent if it does match with the criterion
122	*/
123	$updated_scripts = cookiebot_addons_manipulate_script( $buffer, $this->keywords );
124
125	if( $this->use_cache ) {
126	/**
127	* Set cache for 15 minutes
128	*/
129	set_transient( $this->transient_name, $updated_scripts, 60 * 15 );
130	}
131	}
132
133	return $updated_scripts;
134	}
135	}
136