← All changes | classes/autoptimizeBase.php +621 -328 2.3.1 → trunk View file →

		@@ -1,83 +1,141 @@
1	1	<?php
2		-if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
	2	+/**
	3	+ * Base class other (more-specific) classes inherit from.
	4	+ */
3	5
4		-abstract class autoptimizeBase {
	6	+if ( ! defined( 'ABSPATH' ) ) {
	7	+ exit;
	8	+}
	9	+
	10	+abstract class autoptimizeBase
	11	+{
	12	+ /**
	13	+ * Holds content being processed (html, scripts, styles)
	14	+ *
	15	+ * @var string
	16	+ */
5	17	protected $content = '';
6		- protected $tagWarning = false;
7		-
8		- public function __construct($content) {
	18	+
	19	+ /**
	20	+ * Controls debug logging.
	21	+ *
	22	+ * @var bool
	23	+ */
	24	+ public $debug_log = false;
	25	+
	26	+ /**
	27	+ * Initiated $cdn_url.
	28	+ *
	29	+ * @var string
	30	+ */
	31	+ public $cdn_url = '';
	32	+
	33	+ public function __construct( $content )
	34	+ {
9	35	$this->content = $content;
10	36	}
11		-
12		- //Reads the page and collects tags
13		- abstract public function read($justhead);
14		-
15		- //Joins and optimizes collected things
	37	+
	38	+ /**
	39	+ * Reads the page and collects tags.
	40	+ *
	41	+ * @param array $options Options.
	42	+ *
	43	+ * @return bool
	44	+ */
	45	+ abstract public function read( $options );
	46	+
	47	+ /**
	48	+ * Joins and optimizes collected things.
	49	+ *
	50	+ * @return bool
	51	+ */
16	52	abstract public function minify();
17		-
18		- //Caches the things
	53	+
	54	+ /**
	55	+ * Caches the things.
	56	+ *
	57	+ * @return void
	58	+ */
19	59	abstract public function cache();
20		-
21		- //Returns the content
	60	+
	61	+ /**
	62	+ * Returns the content
	63	+ *
	64	+ * @return string
	65	+ */
22	66	abstract public function getcontent();
23		-
24		- //Converts an URL to a full path
25		- protected function getpath($url) {
26		- $url=apply_filters( 'autoptimize_filter_cssjs_alter_url', $url);
27		-
28		- if (strpos($url,'%')!==false) {
29		- $url=urldecode($url);
	67	+
	68	+ /**
	69	+ * Tranfsorms a given URL to a full local filepath if possible.
	70	+ * Returns local filepath or false.
	71	+ *
	72	+ * @param string $url URL to transform.
	73	+ *
	74	+ * @return bool|string
	75	+ */
	76	+ public function getpath( $url )
	77	+ {
	78	+ $url = apply_filters( 'autoptimize_filter_cssjs_alter_url', $url );
	79	+
	80	+ if ( is_null( $url ) ) {
	81	+ return false;
30	82	}
31	83
32		- $siteHost=parse_url(AUTOPTIMIZE_WP_SITE_URL,PHP_URL_HOST);
33		- $contentHost=parse_url(AUTOPTIMIZE_WP_ROOT_URL,PHP_URL_HOST);
34		-
35		- // normalize
36		- if (strpos($url,'//')===0) {
37		- if (is_ssl()) {
38		- $url = "https:".$url;
	84	+ if ( false !== strpos( $url, '%' ) ) {
	85	+ $url = urldecode( $url );
	86	+ }
	87	+
	88	+ $site_host = parse_url( AUTOPTIMIZE_WP_SITE_URL, PHP_URL_HOST );
	89	+ $content_host = parse_url( AUTOPTIMIZE_WP_ROOT_URL, PHP_URL_HOST );
	90	+
	91	+ // Normalizing attempts...
	92	+ $double_slash_position = strpos( $url, '//' );
	93	+ if ( 0 === $double_slash_position ) {
	94	+ if ( is_ssl() ) {
	95	+ $url = 'https:' . $url;
39	96	} else {
40		- $url = "http:".$url;
	97	+ $url = 'http:' . $url;
41	98	}
42		- } else if ((strpos($url,'//')===false) && (strpos($url,$siteHost)===false)) {
43		- if (AUTOPTIMIZE_WP_SITE_URL === $siteHost) {
44		- $url = AUTOPTIMIZE_WP_SITE_URL.$url;
	99	+ } elseif ( ( false === $double_slash_position ) && ( false === strpos( $url, $site_host ) ) ) {
	100	+ if ( AUTOPTIMIZE_WP_SITE_URL === $site_host ) {
	101	+ $url = AUTOPTIMIZE_WP_SITE_URL . $url;
	102	+ } elseif ( 0 === strpos( $url, '/' ) ) {
	103	+ $url = '//' . $site_host . autoptimizeUtils::path_canonicalize( $url );
45	104	} else {
46		- $subdir_levels=substr_count(preg_replace("/https?:\/\//","",AUTOPTIMIZE_WP_SITE_URL),"/");
47		- $url = AUTOPTIMIZE_WP_SITE_URL.str_repeat("/..",$subdir_levels).$url;
	105	+ $url = AUTOPTIMIZE_WP_SITE_URL . autoptimizeUtils::path_canonicalize( $url );
48	106	}
49	107	}
50		-
51		- if ($siteHost !== $contentHost) {
52		- $url=str_replace(AUTOPTIMIZE_WP_CONTENT_URL,AUTOPTIMIZE_WP_SITE_URL.AUTOPTIMIZE_WP_CONTENT_NAME,$url);
	108	+
	109	+ if ( $site_host !== $content_host ) {
	110	+ $url = str_replace( AUTOPTIMIZE_WP_CONTENT_URL, AUTOPTIMIZE_WP_SITE_URL . AUTOPTIMIZE_WP_CONTENT_NAME, $url );
53	111	}
54	112
55		- // first check; hostname wp site should be hostname of url
56		- $thisHost=@parse_url($url,PHP_URL_HOST);
57		- if ($thisHost !== $siteHost) {
58		- /*
59		- * first try to get all domains from WPML (if available)
60		- * then explicitely declare $this->cdn_url as OK as well
61		- * then apply own filter autoptimize_filter_cssjs_multidomain takes an array of hostnames
62		- * each item in that array will be considered part of the same WP multisite installation
63		- */
	113	+ // First check; hostname wp site should be hostname of url!
	114	+ $url_host = @parse_url( $url, PHP_URL_HOST ); // @codingStandardsIgnoreLine
	115	+ if ( $url_host !== $site_host ) {
	116	+ /**
	117	+ * First try to get all domains from WPML (if available)
	118	+ * then explicitely declare $this->cdn_url as OK as well
	119	+ * then apply own filter autoptimize_filter_cssjs_multidomain takes an array of hostnames
	120	+ * each item in that array will be considered part of the same WP multisite installation
	121	+ */
64	122	$multidomains = array();
65		-
66		- $multidomainsWPML = apply_filters('wpml_setting', array(), 'language_domains');
67		- if (!empty($multidomainsWPML)) {
68		- $multidomains = array_map(array($this,"ao_getDomain"),$multidomainsWPML);
	123	+
	124	+ $multidomains_wpml = apply_filters( 'wpml_setting', array(), 'language_domains' );
	125	+ if ( ! empty( $multidomains_wpml ) ) {
	126	+ $multidomains = array_map( array( $this, 'get_url_hostname' ), $multidomains_wpml );
69	127	}
70		-
71		- if (!empty($this->cdn_url)) {
72		- $multidomains[]=parse_url($this->cdn_url,PHP_URL_HOST);
	128	+
	129	+ if ( ! empty( $this->cdn_url ) ) {
	130	+ $multidomains[] = parse_url( $this->cdn_url, PHP_URL_HOST );
73	131	}
74		-
75		- $multidomains = apply_filters('autoptimize_filter_cssjs_multidomain', $multidomains);
76		-
77		- if (!empty($multidomains)) {
78		- if (in_array($thisHost,$multidomains)) {
79		- $url=str_replace($thisHost, parse_url(AUTOPTIMIZE_WP_SITE_URL,PHP_URL_HOST), $url);
	132	+
	133	+ $multidomains = apply_filters( 'autoptimize_filter_cssjs_multidomain', $multidomains );
	134	+
	135	+ if ( ! empty( $multidomains ) ) {
	136	+ if ( in_array( $url_host, $multidomains ) ) {
	137	+ $url = str_replace( $url_host, $site_host, $url );
80	138	} else {
81	139	return false;
82	140	}
83	141	} else {
		@@ -83,29 +141,44 @@
83	141	} else {
84	142	return false;
85	143	}
86	144	}
87		-
88		- // try to remove "wp root url" from url while not minding http<>https
89		- $tmp_ao_root = preg_replace('/https?:/','',AUTOPTIMIZE_WP_ROOT_URL);
90		- if ($siteHost !== $contentHost) {
91		- // as we replaced the content-domain with the site-domain, we should match against that
92		- $tmp_ao_root = preg_replace('/https?:/','',AUTOPTIMIZE_WP_SITE_URL);
	145	+
	146	+ // Try to remove "wp root url" from url while not minding http<>https.
	147	+ $tmp_ao_root = preg_replace( '/https?:/', '', AUTOPTIMIZE_WP_ROOT_URL );
	148	+
	149	+ if ( $site_host !== $content_host ) {
	150	+ // As we replaced the content-domain with the site-domain, we should match against that.
	151	+ $tmp_ao_root = preg_replace( '/https?:/', '', AUTOPTIMIZE_WP_SITE_URL );
93	152	}
94		- $tmp_url = preg_replace('/https?:/','',$url);
95		- $path = str_replace($tmp_ao_root,'',$tmp_url);
96		-
97		- // if path starts with :// or //, this is not a URL in the WP context and we have to assume we can't aggregate
98		- if (preg_match('#^:?//#',$path)) {
99		- /** External script/css (adsense, etc) */
	153	+
	154	+ if ( is_multisite() && ! is_main_site() && ! empty( $this->cdn_url ) && apply_filters( 'autoptimize_filter_base_getpage_multisite_cdn_juggling', true ) ) {
	155	+ // multisite child sites with CDN need the network_site_url as tmp_ao_root but only if directory-based multisite.
	156	+ $_network_site_url = network_site_url();
	157	+ if ( strpos( AUTOPTIMIZE_WP_SITE_URL, $_network_site_url ) !== false ) {
	158	+ $tmp_ao_root = preg_replace( '/https?:/', '', $_network_site_url );
	159	+ }
	160	+ }
	161	+
	162	+ $tmp_url = preg_replace( '/https?:/', '', $url );
	163	+ $path = str_replace( $tmp_ao_root, '', $tmp_url );
	164	+
	165	+ // If path starts with :// or //, this is not a URL in the WP context and
	166	+ // we have to assume we can't aggregate.
	167	+ if ( preg_match( '#^:?//#', $path ) ) {
	168	+ // External script/css (adsense, etc).
100	169	return false;
101	170	}
102	171
103		- // prepend with WP_ROOT_DIR to have full path to file
104		- $path = str_replace('//','/',WP_ROOT_DIR.$path);
105		-
106		- // final check: does file exist and is it readable
107		- if (file_exists($path) && is_file($path) && is_readable($path)) {
	172	+ // Prepend with WP_ROOT_DIR to have full path to file.
	173	+ $path = str_replace( '//', '/', trailingslashit( WP_ROOT_DIR ) . $path );
	174	+
	175	+ // Allow path to be altered, e.g. in the case of bedrock-like setups where
	176	+ // core, theme & plugins might be in different locations on the filesystem.
	177	+ $path = apply_filters( 'autoptimize_filter_base_getpath_path', $path, $url );
	178	+
	179	+ // Final check: does file exist and is it readable?
	180	+ if ( file_exists( $path ) && is_file( $path ) && is_readable( $path ) ) {
108	181	return $path;
109	182	} else {
110	183	return false;
111	184	}
		@@ -110,309 +183,529 @@
110	183	return false;
111	184	}
112	185	}
113	186
114		- // needed for WPML-filter
115		- protected function ao_getDomain($in) {
116		- // make sure the url starts with something vaguely resembling a protocol
117		- if ((strpos($in,"http")!==0) && (strpos($in,"//")!==0)) {
118		- $in="http://".$in;
	187	+ /**
	188	+ * Returns the hostname part of a given $url if we're able to parse it.
	189	+ * If not, it returns the original url (prefixed with http:// scheme in case
	190	+ * it was missing).
	191	+ * Used as callback for WPML multidomains filter.
	192	+ *
	193	+ * @param string $url URL.
	194	+ *
	195	+ * @return string
	196	+ */
	197	+ protected function get_url_hostname( $url )
	198	+ {
	199	+ // Checking that the url starts with something vaguely resembling a protocol.
	200	+ if ( ( 0 !== strpos( $url, 'http' ) ) && ( 0 !== strpos( $url, '//' ) ) ) {
	201	+ $url = 'http://' . $url;
119	202	}
120		-
121		- // do the actual parse_url
122		- $out = parse_url($in,PHP_URL_HOST);
123		-
124		- // fallback if parse_url does not understand the url is in fact a url
125		- if (empty($out)) $out=$in;
126		-
127		- return $out;
128		- }
129	203
	204	+ // Grab the hostname.
	205	+ $hostname = parse_url( $url, PHP_URL_HOST );
130	206
131		- // logger
132		- protected function ao_logger($logmsg,$appendHTML=true) {
133		- if ($appendHTML) {
134		- $logmsg="<!--noptimize--><!-- ".$logmsg." --><!--/noptimize-->";
135		- $this->content.=$logmsg;
136		- } else {
137		- error_log("Autoptimize: ".$logmsg);
	207	+ // Fallback when parse_url() fails.
	208	+ if ( empty( $hostname ) ) {
	209	+ $hostname = $url;
138	210	}
	211	+
	212	+ return $hostname;
139	213	}
140	214
141		- // hide everything between noptimize-comment tags
142		- protected function hide_noptimize($noptimize_in) {
143		- if ( preg_match( '/<!--\s?noptimize\s?-->/', $noptimize_in ) ) {
144		- $noptimize_out = preg_replace_callback(
145		- '#<!--\s?noptimize\s?-->.*?<!--\s?/\s?noptimize\s?-->#is',
146		- create_function(
147		- '$matches',
148		- 'return "%%NOPTIMIZE".AUTOPTIMIZE_HASH."%%".base64_encode($matches[0])."%%NOPTIMIZE%%";'
149		- ),
150		- $noptimize_in
151		- );
152		- } else {
153		- $noptimize_out = $noptimize_in;
154		- }
155		- return $noptimize_out;
	215	+ /**
	216	+ * Hides everything between noptimize-comment tags.
	217	+ *
	218	+ * @param string $markup Markup to process.
	219	+ *
	220	+ * @return string
	221	+ */
	222	+ protected function hide_noptimize( $markup )
	223	+ {
	224	+ return $this->replace_contents_with_marker_if_exists(
	225	+ 'NOPTIMIZE',
	226	+ '/<!--\s?noptimize\s?-->/',
	227	+ '#<!--\s?noptimize\s?-->.*?<!--\s?/\s?noptimize\s?-->#is',
	228	+ $markup
	229	+ );
156	230	}
157		-
158		- // unhide noptimize-tags
159		- protected function restore_noptimize($noptimize_in) {
160		- if ( strpos( $noptimize_in, '%%NOPTIMIZE%%' ) !== false ) {
161		- $noptimize_out = preg_replace_callback(
162		- '#%%NOPTIMIZE'.AUTOPTIMIZE_HASH.'%%(.*?)%%NOPTIMIZE%%#is',
163		- create_function(
164		- '$matches',
165		- 'return base64_decode($matches[1]);'
166		- ),
167		- $noptimize_in
168		- );
169		- } else {
170		- $noptimize_out = $noptimize_in;
171		- }
172		- return $noptimize_out;
	231	+
	232	+ /**
	233	+ * Unhide noptimize-tags.
	234	+ *
	235	+ * @param string $markup Markup to process.
	236	+ *
	237	+ * @return string
	238	+ */
	239	+ protected function restore_noptimize( $markup )
	240	+ {
	241	+ return $this->restore_marked_content( 'NOPTIMIZE', $markup );
173	242	}
174	243
175		- protected function hide_iehacks($iehacks_in) {
176		- if ( strpos( $iehacks_in, '<!--[if' ) !== false ) {
177		- $iehacks_out = preg_replace_callback(
178		- '#<!--\[if.*?\[endif\]-->#is',
179		- create_function(
180		- '$matches',
181		- 'return "%%IEHACK".AUTOPTIMIZE_HASH."%%".base64_encode($matches[0])."%%IEHACK%%";'
182		- ),
183		- $iehacks_in
184		- );
185		- } else {
186		- $iehacks_out = $iehacks_in;
187		- }
188		- return $iehacks_out;
	244	+ /**
	245	+ * Hides "iehacks" content.
	246	+ *
	247	+ * @param string $markup Markup to process.
	248	+ *
	249	+ * @return string
	250	+ */
	251	+ protected function hide_iehacks( $markup )
	252	+ {
	253	+ return $this->replace_contents_with_marker_if_exists(
	254	+ 'IEHACK', // Marker name...
	255	+ '<!--[if', // Invalid regex, will fallback to search using strpos()...
	256	+ '#<!--\[if.*?\[endif\]-->#is', // Replacement regex...
	257	+ $markup
	258	+ );
189	259	}
190	260
191		- protected function restore_iehacks($iehacks_in) {
192		- if ( strpos( $iehacks_in, '%%IEHACK%%' ) !== false ) {
193		- $iehacks_out = preg_replace_callback(
194		- '#%%IEHACK'.AUTOPTIMIZE_HASH.'%%(.*?)%%IEHACK%%#is',
195		- create_function(
196		- '$matches',
197		- 'return base64_decode($matches[1]);'
198		- ),
199		- $iehacks_in
200		- );
201		- } else {
202		- $iehacks_out=$iehacks_in;
203		- }
204		- return $iehacks_out;
	261	+ /**
	262	+ * Restores "hidden" iehacks content.
	263	+ *
	264	+ * @param string $markup Markup to process.
	265	+ *
	266	+ * @return string
	267	+ */
	268	+ protected function restore_iehacks( $markup )
	269	+ {
	270	+ return $this->restore_marked_content( 'IEHACK', $markup );
205	271	}
206	272
207		- protected function hide_comments($comments_in) {
208		- if ( strpos( $comments_in, '<!--' ) !== false ) {
209		- $comments_out = preg_replace_callback(
210		- '#<!--.*?-->#is',
211		- create_function(
212		- '$matches',
213		- 'return "%%COMMENTS".AUTOPTIMIZE_HASH."%%".base64_encode($matches[0])."%%COMMENTS%%";'
214		- ),
215		- $comments_in
216		- );
217		- } else {
218		- $comments_out = $comments_in;
219		- }
220		- return $comments_out;
	273	+ /**
	274	+ * "Hides" content within HTML comments using a regex-based replacement
	275	+ * if HTML comment markers are found.
	276	+ * `<!--example-->` becomes `%%COMMENTS%%ZXhhbXBsZQ==%%COMMENTS%%`
	277	+ *
	278	+ * @param string $markup Markup to process.
	279	+ *
	280	+ * @return string
	281	+ */
	282	+ protected function hide_comments( $markup )
	283	+ {
	284	+ return $this->replace_contents_with_marker_if_exists(
	285	+ 'COMMENTS',
	286	+ '<!--',
	287	+ '#<!--.*?-->#is',
	288	+ $markup
	289	+ );
221	290	}
222	291
223		- protected function restore_comments($comments_in) {
224		- if ( strpos( $comments_in, '%%COMMENTS%%' ) !== false ) {
225		- $comments_out = preg_replace_callback(
226		- '#%%COMMENTS'.AUTOPTIMIZE_HASH.'%%(.*?)%%COMMENTS%%#is',
227		- create_function(
228		- '$matches',
229		- 'return base64_decode($matches[1]);'
230		- ),
231		- $comments_in
232		- );
233		- } else {
234		- $comments_out=$comments_in;
235		- }
236		- return $comments_out;
	292	+ /**
	293	+ * Restores original HTML comment markers inside a string whose HTML
	294	+ * comments have been "hidden" by using `hide_comments()`.
	295	+ *
	296	+ * @param string $markup Markup to process.
	297	+ *
	298	+ * @return string
	299	+ */
	300	+ protected function restore_comments( $markup )
	301	+ {
	302	+ return $this->restore_marked_content( 'COMMENTS', $markup );
237	303	}
238	304
239		- protected function url_replace_cdn( $url ) {
240		- // API filter to change base CDN URL
241		- $cdn_url = apply_filters( 'autoptimize_filter_base_cdnurl', $this->cdn_url );
	305	+ /**
	306	+ * Replaces the given URL with the CDN-version of it when CDN replacement
	307	+ * is supposed to be done.
	308	+ *
	309	+ * @param string $url URL to process.
	310	+ *
	311	+ * @return string
	312	+ */
	313	+ public function url_replace_cdn( $url )
	314	+ {
	315	+ // For 2.3 back-compat in which cdn-ing appeared to be automatically
	316	+ // including WP subfolder/subdirectory into account as part of cdn-ing,
	317	+ // even though it might've caused serious troubles in certain edge-cases.
	318	+ $cdn_url = autoptimizeUtils::tweak_cdn_url_if_needed( $this->cdn_url );
242	319
243		- if ( !empty($cdn_url) ) {
244		- // prepend domain-less absolute URL's
245		- if ( ( substr( $url, 0, 1 ) === '/' ) && ( substr( $url, 1, 1 ) !== '/' ) ) {
246		- $url = rtrim( $cdn_url, '/' ) . $url;
	320	+ // Allows API/filter to further tweak the cdn url...
	321	+ $cdn_url = apply_filters( 'autoptimize_filter_base_cdnurl', $cdn_url );
	322	+ if ( ! empty( $cdn_url ) && false === strpos( $url, $cdn_url ) && false !== apply_filters( 'autoptimize_filter_base_apply_cdn', true, $url ) ) {
	323	+
	324	+ // Simple str_replace-based approach fails when $url is protocol-or-host-relative.
	325	+ $is_protocol_relative = autoptimizeUtils::is_protocol_relative( $url );
	326	+ $is_host_relative = ( ! $is_protocol_relative && ( '/' === $url[0] ) );
	327	+ $cdn_url = esc_url( rtrim( $cdn_url, '/' ) );
	328	+
	329	+ if ( $is_host_relative ) {
	330	+ // Prepending host-relative urls with the cdn url.
	331	+ $url = $cdn_url . $url;
247	332	} else {
248		- // get wordpress base URL
249		- $WPSiteBreakdown = parse_url( AUTOPTIMIZE_WP_SITE_URL );
250		- $WPBaseUrl = $WPSiteBreakdown['scheme'] . '://' . $WPSiteBreakdown['host'];
251		- if ( ! empty( $WPSiteBreakdown['port'] ) ) {
252		- $WPBaseUrl .= ":" . $WPSiteBreakdown['port'];
253		- }
254		- // replace full url's with scheme
255		- $tmp_url = str_replace( $WPBaseUrl, rtrim( $cdn_url, '/' ), $url );
256		- if ( $tmp_url === $url ) {
257		- // last attempt; replace scheme-less URL's
258		- $url = str_replace( preg_replace( '/https?:/', '', $WPBaseUrl ), rtrim( $cdn_url, '/' ), $url );
	333	+ // Either a protocol-relative or "regular" url, replacing it either way.
	334	+ if ( $is_protocol_relative ) {
	335	+ // Massage $site_url so that simple str_replace() still "works" by
	336	+ // searching for the protocol-relative version of AUTOPTIMIZE_WP_SITE_URL.
	337	+ $site_url = str_replace( array( 'http:', 'https:' ), '', AUTOPTIMIZE_WP_SITE_URL );
259	338	} else {
260		- $url = $tmp_url;
	339	+ $site_url = AUTOPTIMIZE_WP_SITE_URL;
261	340	}
	341	+ $url = str_replace( $site_url, $cdn_url, $url );
262	342	}
263	343	}
264	344
265		- // allow API filter to alter URL after CDN replacement
	345	+ // Allow API filter to take further care of CDN replacement.
266	346	$url = apply_filters( 'autoptimize_filter_base_replace_cdn', $url );
	347	+
267	348	return $url;
268	349	}
269	350
270		- protected function inject_in_html($payload,$replaceTag) {
271		- if (strpos($this->content,$replaceTag[0])!== false) {
272		- if ($replaceTag[1]==="after") {
273		- $replaceBlock=$replaceTag[0].$payload;
274		- } else if ($replaceTag[1]==="replace"){
275		- $replaceBlock=$payload;
	351	+ /**
	352	+ * Injects/replaces the given payload markup into `$this->content`
	353	+ * at the specified location.
	354	+ * If the specified tag cannot be found, the payload is appended into
	355	+ * $this->content along with a warning wrapped inside <!--noptimize--> tags.
	356	+ *
	357	+ * @param string $payload Markup to inject.
	358	+ * @param array $where Array specifying the tag name and method of injection.
	359	+ * Index 0 is the tag name (i.e., `</body>`).
	360	+ * Index 1 specifies ˛'before', 'after' or 'replace'. Defaults to 'before'.
	361	+ *
	362	+ * @return void
	363	+ */
	364	+ protected function inject_in_html( $payload, $where )
	365	+ {
	366	+ $warned = false;
	367	+ $position = autoptimizeUtils::strpos( $this->content, $where[0] );
	368	+ if ( false !== $position ) {
	369	+ // Found the tag, setup content/injection as specified.
	370	+ if ( 'after' === $where[1] ) {
	371	+ $content = $where[0] . $payload;
	372	+ } elseif ( 'replace' === $where[1] ) {
	373	+ $content = $payload;
276	374	} else {
277		- $replaceBlock=$payload.$replaceTag[0];
	375	+ $content = $payload . $where[0];
278	376	}
279		- $this->content = substr_replace($this->content,$replaceBlock,strpos($this->content,$replaceTag[0]),strlen($replaceTag[0]));
	377	+ // Place where specified.
	378	+ $this->content = autoptimizeUtils::substr_replace(
	379	+ $this->content,
	380	+ $content,
	381	+ $position,
	382	+ // Using plain strlen() should be safe here for now, since
	383	+ // we're not searching for multibyte chars here still...
	384	+ strlen( $where[0] )
	385	+ );
280	386	} else {
	387	+ // Couldn't find what was specified, just append and add a warning.
281	388	$this->content .= $payload;
282		- if (!$this->tagWarning) {
283		- $this->content .= "<!--noptimize--><!-- Autoptimize found a problem with the HTML in your Theme, tag \"".str_replace(array("<",">"),"",$replaceTag[0])."\" missing --><!--/noptimize-->";
284		- $this->tagWarning=true;
	389	+ if ( ! $warned ) {
	390	+ $tag_display = str_replace( array( '<', '>' ), '', $where[0] );
	391	+ $this->content .= '<!--noptimize--><!-- Autoptimize found a problem with the HTML in your Theme, tag `' . $tag_display . '` missing --><!--/noptimize-->';
	392	+ $warned = true;
285	393	}
286	394	}
287	395	}
288		-
289		- protected function isremovable($tag, $removables) {
290		- foreach ($removables as $match) {
291		- if (strpos($tag,$match)!==false) {
	396	+
	397	+ /**
	398	+ * Returns true if given `$tag` is found in the list of `$removables`.
	399	+ *
	400	+ * @param string $tag Tag to search for.
	401	+ * @param array $removables List of things considered completely removable.
	402	+ *
	403	+ * @return bool
	404	+ */
	405	+ protected function isremovable( $tag, $removables )
	406	+ {
	407	+ foreach ( $removables as $match ) {
	408	+ if ( false !== strpos( $tag, $match ) ) {
292	409	return true;
293	410	}
294	411	}
	412	+
295	413	return false;
296	414	}
297		-
298		- // inject already minified code in optimized JS/CSS
299		- protected function inject_minified($in) {
300		- if ( strpos( $in, '%%INJECTLATER%%' ) !== false ) {
301		- $out = preg_replace_callback(
302		- '#\/\*\!%%INJECTLATER'.AUTOPTIMIZE_HASH.'%%(.*?)%%INJECTLATER%%\*\/#is',
303		- create_function(
304		- '$matches',
305		- '$filepath=base64_decode(strtok($matches[1],"|"));
306		- $filecontent=file_get_contents($filepath);
307		-
308		- // remove BOM
309		- $filecontent = preg_replace("#\x{EF}\x{BB}\x{BF}#","",$filecontent);
310	415
311		- // remove comments and blank lines
312		- if (substr($filepath,-3,3)===".js") {
313		- $filecontent=preg_replace("#^\s*\/\/.*$#Um","",$filecontent);
314		- }
	416	+ /**
	417	+ * Callback used in `self::inject_minified()`.
	418	+ *
	419	+ * @param array $matches Regex matches.
	420	+ *
	421	+ * @return string
	422	+ */
	423	+ public function inject_minified_callback( $matches )
	424	+ {
	425	+ static $conf = null;
	426	+ if ( null === $conf ) {
	427	+ $conf = autoptimizeConfig::instance();
	428	+ }
315	429
316		- $filecontent=preg_replace("#^\s*\/\*[^!].*\*\/\s?#Um","",$filecontent);
317		- $filecontent=preg_replace("#(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+#", "\n", $filecontent);
	430	+ /**
	431	+ * $matches[1] holds the whole match caught by regex in self::inject_minified(),
	432	+ * so we take that and split the string on `|`.
	433	+ * First element is the filepath, second is the md5 hash of contents
	434	+ * the filepath had when it was being processed.
	435	+ * If we don't have those, we'll bail out early.
	436	+ */
	437	+ $filepath = null;
	438	+ $filehash = null;
318	439
319		- // differentiate between JS, CSS and other files
320		- if (substr($filepath,-3,3)===".js") {
321		- if ((substr($filecontent,-1,1)!==";")&&(substr($filecontent,-1,1)!=="}")) {
322		- $filecontent.=";";
323		- }
	440	+ // Grab the parts we need.
	441	+ $parts = explode( '|', $matches[1] );
	442	+ if ( ! empty( $parts ) ) {
	443	+ $filepath = isset( $parts[0] ) ? base64_decode( $parts[0] ) : null;
	444	+ $filehash = isset( $parts[1] ) ? $parts[1] : null;
	445	+ }
324	446
325		- if (get_option("autoptimize_js_trycatch")==="on") {
326		- $filecontent="try{".$filecontent."}catch(e){}";
327		- }
328		- } else if ((substr($filepath,-4,4)===".css")) {
329		- $filecontent=autoptimizeStyles::fixurls($filepath,$filecontent);
330		- } else {
331		- $filecontent="";
332		- }
	447	+ // Bail early if something's not right...
	448	+ if ( ! $filepath || ! $filehash ) {
	449	+ return "\n";
	450	+ }
333	451
334		- // return
335		- return "\n".$filecontent;'
336		- ),
	452	+ $filecontent = file_get_contents( $filepath );
	453	+
	454	+ // Some things are differently handled for css/js...
	455	+ $is_js_file = ( '.js' === substr( $filepath, -3, 3 ) );
	456	+
	457	+ $is_css_file = false;
	458	+ if ( ! $is_js_file ) {
	459	+ $is_css_file = ( '.css' === substr( $filepath, -4, 4 ) );
	460	+ }
	461	+
	462	+ // BOMs being nuked here unconditionally (regardless of where they are)!
	463	+ $filecontent = preg_replace( "#\x{EF}\x{BB}\x{BF}#", '', $filecontent );
	464	+
	465	+ // Remove comments and blank lines.
	466	+ if ( $is_js_file ) {
	467	+ $filecontent = preg_replace( '#^\s*\/\/.*$#Um', '', $filecontent );
	468	+ }
	469	+
	470	+ // Nuke un-important comments.
	471	+ $filecontent = preg_replace( '#^\s*\/\*[^!].*\*\/\s?#Um', '', $filecontent );
	472	+
	473	+ // Normalize newlines.
	474	+ $filecontent = preg_replace( '#(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+#', "\n", $filecontent );
	475	+
	476	+ // JS specifics.
	477	+ if ( $is_js_file ) {
	478	+ // Append a semicolon at the end of js files if it's missing.
	479	+ $last_char = substr( $filecontent, -1, 1 );
	480	+ if ( ';' !== $last_char && '}' !== $last_char ) {
	481	+ $filecontent .= ';';
	482	+ }
	483	+ // Check if try/catch should be used.
	484	+ $opt_js_try_catch = $conf->get( 'autoptimize_js_trycatch' );
	485	+ if ( 'on' === $opt_js_try_catch ) {
	486	+ // It should, wrap in try/catch.
	487	+ $filecontent = 'try{' . $filecontent . '}catch(e){}';
	488	+ }
	489	+ } elseif ( $is_css_file ) {
	490	+ $filecontent = autoptimizeStyles::fixurls( $filepath, $filecontent );
	491	+ } else {
	492	+ $filecontent = '';
	493	+ }
	494	+
	495	+ // Return modified (or empty!) code/content.
	496	+ return "\n" . $filecontent;
	497	+ }
	498	+
	499	+ /**
	500	+ * Inject already minified code in optimized JS/CSS.
	501	+ *
	502	+ * @param string $in Markup.
	503	+ *
	504	+ * @return string
	505	+ */
	506	+ protected function inject_minified( $in )
	507	+ {
	508	+ $out = $in;
	509	+ if ( false !== strpos( $in, '%%INJECTLATER%%' ) ) {
	510	+ $out = preg_replace_callback(
	511	+ '#\/\*\!%%INJECTLATER' . AUTOPTIMIZE_HASH . '%%(.*?)%%INJECTLATER%%\*\/#is',
	512	+ array( $this, 'inject_minified_callback' ),
337	513	$in
338	514	);
339		- } else {
340		- $out = $in;
341	515	}
	516	+
342	517	return $out;
343	518	}
344		-
345		- protected function minify_single($pathIn) {
346		- // determine JS or CSS and set var (also mimetype), return false if neither
347		- if ( $this->str_ends_in($pathIn,".js") === true ) {
348		- $codeType="js";
349		- $codeMime="text/javascript";
350		- } else if ( $this->str_ends_in($pathIn,".css") === true ) {
351		- $codeType="css";
352		- $codeMime="text/css";
353		- } else {
354		- return false;
355		- }
356		-
357		- // if min.js or min.css return false
358		- if (( $this->str_ends_in($pathIn,"-min.".$codeType) === true ) || ( $this->str_ends_in($pathIn,".min.".$codeType) === true ) || ( $this->str_ends_in($pathIn,"js/jquery/jquery.js") === true ) ) {
359		- return false;
360		- }
361		-
362		- // read file, return false if empty
363		- $_toMinify = file_get_contents($pathIn);
364		- if ( empty($_toMinify) ) return false;
365		-
366		- // check cache
367		- $_md5hash = "single_".md5($_toMinify);
368		- $_cache = new autoptimizeCache($_md5hash,$codeType);
369		- if ($_cache->check() ) {
370		- $_CachedMinifiedUrl = AUTOPTIMIZE_CACHE_URL.$_cache->getname();
371		- } else {
372		- // if not in cache first minify
373		- $_Minified = $_toMinify;
374		- if ($codeType === "js") {
375		- if (class_exists('JSMin') && apply_filters( 'autoptimize_js_do_minify' , true)) {
376		- if (@is_callable(array("JSMin","minify"))) {
377		- $tmp_code = trim(JSMin::minify($_toMinify));
378		- }
379		- }
380		- } else if ($codeType === "css") {
381		- if (class_exists('Minify_CSS_Compressor')) {
382		- $tmp_code = trim(Minify_CSS_Compressor::process($_toMinify));
383		- } else if(class_exists('CSSmin')) {
384		- $cssmin = new CSSmin();
385		- if (method_exists($cssmin,"run")) {
386		- $tmp_code = trim($cssmin->run($_toMinify));
387		- } elseif (@is_callable(array($cssmin,"minify"))) {
388		- $tmp_code = trim(CssMin::minify($_toMinify));
389		- }
	519	+
	520	+ /**
	521	+ * Specialized method to create the INJECTLATER marker.
	522	+ * These are somewhat "special", in the sense that they're additionally wrapped
	523	+ * within an "exclamation mark style" comment, so that they're not stripped
	524	+ * out by minifiers.
	525	+ * They also currently contain the hash of the file's contents too (unlike other markers).
	526	+ *
	527	+ * @param string $filepath Filepath.
	528	+ * @param string $hash Hash.
	529	+ *
	530	+ * @return string
	531	+ */
	532	+ public static function build_injectlater_marker( $filepath, $hash )
	533	+ {
	534	+ $contents = '/*!' . self::build_marker( 'INJECTLATER', $filepath, $hash ) . '*/';
	535	+
	536	+ return $contents;
	537	+ }
	538	+
	539	+ /**
	540	+ * Creates and returns a `%%`-style named marker which holds
	541	+ * the base64 encoded `$data`.
	542	+ * If `$hash` is provided, it's appended to the base64 encoded string
	543	+ * using `|` as the separator (in order to support building the
	544	+ * somewhat special/different INJECTLATER marker).
	545	+ *
	546	+ * @param string $name Marker name.
	547	+ * @param string $data Marker data which will be base64-encoded.
	548	+ * @param string|null $hash Optional.
	549	+ *
	550	+ * @return string
	551	+ */
	552	+ public static function build_marker( $name, $data, $hash = null )
	553	+ {
	554	+ // Start the marker, add the data.
	555	+ $marker = '%%' . $name . AUTOPTIMIZE_HASH . '%%' . base64_encode( $data );
	556	+
	557	+ // Add the hash if provided.
	558	+ if ( null !== $hash ) {
	559	+ $marker .= '|' . $hash;
	560	+ }
	561	+
	562	+ // Close the marker.
	563	+ $marker .= '%%' . $name . '%%';
	564	+
	565	+ return $marker;
	566	+ }
	567	+
	568	+ /**
	569	+ * Searches for `$search` in `$content` (using either `preg_match()`
	570	+ * or `strpos()`, depending on whether `$search` is a valid regex pattern or not).
	571	+ * If something is found, it replaces `$content` using `$re_replace_pattern`,
	572	+ * effectively creating our named markers (`%%{$marker}%%`.
	573	+ * These are then at some point replaced back to their actual/original/modified
	574	+ * contents using `autoptimizeBase::restore_marked_content()`.
	575	+ *
	576	+ * @param string $marker Marker name (without percent characters).
	577	+ * @param string $search A string or full blown regex pattern to search for in $content. Uses `strpos()` or `preg_match()`.
	578	+ * @param string $re_replace_pattern Regex pattern to use when replacing contents.
	579	+ * @param string $content Content to work on.
	580	+ *
	581	+ * @return string
	582	+ */
	583	+ public static function replace_contents_with_marker_if_exists( $marker, $search, $re_replace_pattern, $content )
	584	+ {
	585	+ $found = false;
	586	+
	587	+ $is_regex = autoptimizeUtils::str_is_valid_regex( $search );
	588	+ if ( $is_regex ) {
	589	+ $found = preg_match( $search, $content );
	590	+ } else {
	591	+ $found = ( false !== strpos( $content, $search ) );
	592	+ }
	593	+
	594	+ if ( $found ) {
	595	+ $content = preg_replace_callback(
	596	+ $re_replace_pattern,
	597	+ function( $matches ) use ( $marker ) {
	598	+ return autoptimizeBase::build_marker( $marker, $matches[0] );
	599	+ },
	600	+ $content
	601	+ );
	602	+
	603	+ // Check for error (for example, an error can occur if $content is very large).
	604	+ if ( null === $content ) {
	605	+ $error_message = 'Autoptimize: preg_replace_callback() failed';
	606	+ if ( function_exists( 'preg_last_error_msg' ) ) {
	607	+ $error_message .= ': ' . preg_last_error_msg();
390	608	}
391		- }
392		- if (!empty($tmp_code)) {
393		- $_Minified = $tmp_code;
394		- unset($tmp_code);
395		- }
396		- // and then cache
397		- $_cache->cache($_Minified,$codeMime);
398		- $_CachedMinifiedUrl = AUTOPTIMIZE_CACHE_URL.$_cache->getname();
399		- }
400		- unset($_cache);
401		-
402		- // if CDN, then CDN
403		- $_CachedMinifiedUrl = $this->url_replace_cdn($_CachedMinifiedUrl);
	609	+ error_log( $error_message );
	610	+ }
	611	+ }
404	612
405		- return $_CachedMinifiedUrl;
406		- }
407		-
408		- protected function str_ends_in($haystack,$needle) {
409		- $needleLength = strlen($needle);
410		- $haystackLength = strlen($haystack);
411		- $lastPos=strrpos($haystack,$needle);
412		- if ($lastPos === $haystackLength - $needleLength) {
413		- return true;
414		- } else {
415		- return false;
416		- }
417		- }
	613	+ return $content;
	614	+ }
	615	+
	616	+ /**
	617	+ * Complements `autoptimizeBase::replace_contents_with_marker_if_exists()`.
	618	+ *
	619	+ * @param string $marker Marker.
	620	+ * @param string $content Markup.
	621	+ *
	622	+ * @return string
	623	+ */
	624	+ public static function restore_marked_content( $marker, $content )
	625	+ {
	626	+ if ( false !== strpos( $content, $marker ) ) {
	627	+ $content = preg_replace_callback(
	628	+ '#%%' . $marker . AUTOPTIMIZE_HASH . '%%(.*?)%%' . $marker . '%%#is',
	629	+ function ( $matches ) {
	630	+ return base64_decode( $matches[1] );
	631	+ },
	632	+ $content
	633	+ );
	634	+ }
	635	+
	636	+ return $content;
	637	+ }
	638	+
	639	+ /**
	640	+ * Logs given `$data` for debugging purposes (when debug logging is on).
	641	+ *
	642	+ * @param mixed $data Data to log.
	643	+ *
	644	+ * @return void
	645	+ */
	646	+ protected function debug_log( $data )
	647	+ {
	648	+ if ( ! isset( $this->debug_log ) || ! $this->debug_log ) {
	649	+ return;
	650	+ }
	651	+
	652	+ if ( ! is_string( $data ) && ! is_resource( $data ) ) {
	653	+ $data = var_export( $data, true );
	654	+ }
	655	+
	656	+ error_log( $data );
	657	+ }
	658	+
	659	+ /**
	660	+ * Checks if a single local css/js file can be minified and returns source if so.
	661	+ *
	662	+ * @param string $filepath Filepath.
	663	+ *
	664	+ * @return bool|string to be minified code or false.
	665	+ */
	666	+ protected function prepare_minify_single( $filepath )
	667	+ {
	668	+ // Decide what we're dealing with, return false if we don't know.
	669	+ if ( autoptimizeUtils::str_ends_in( $filepath, '.js' ) ) {
	670	+ $type = 'js';
	671	+ } elseif ( autoptimizeUtils::str_ends_in( $filepath, '.css' ) ) {
	672	+ $type = 'css';
	673	+ } else {
	674	+ return false;
	675	+ }
	676	+
	677	+ // Bail if it looks like its already minifed (by having -min or .min in filename).
	678	+ $minified_variants = array(
	679	+ '-min.' . $type,
	680	+ '.min.' . $type,
	681	+ );
	682	+ foreach ( $minified_variants as $ending ) {
	683	+ if ( autoptimizeUtils::str_ends_in( $filepath, $ending ) && true === apply_filters( 'autoptimize_filter_base_prepare_exclude_minified', true ) ) {
	684	+ return false;
	685	+ }
	686	+ }
	687	+
	688	+ // Get file contents, bail if empty.
	689	+ $contents = file_get_contents( $filepath );
	690	+
	691	+ return $contents;
	692	+ }
	693	+
	694	+ /**
	695	+ * Given an autoptimizeCache instance returns the (maybe cdn-ed) url of
	696	+ * the cached file.
	697	+ *
	698	+ * @param autoptimizeCache $cache autoptimizeCache instance.
	699	+ *
	700	+ * @return string
	701	+ */
	702	+ protected function build_minify_single_url( autoptimizeCache $cache )
	703	+ {
	704	+ $url = AUTOPTIMIZE_CACHE_URL . $cache->getname();
	705	+
	706	+ // CDN-replace the resulting URL if needed...
	707	+ $url = $this->url_replace_cdn( $url );
	708	+
	709	+ return $url;
	710	+ }
418	711	}