Minify_HTML::_removeStyleCB() - Code Metrics - samsonos/php_compressor - Measure and Improve Code Quality continuously with Scrutinizer

Minify_HTML::_removeStyleCB() A
last analyzed 2016-09-19 15:20 UTC

↳ Parent: Minify_HTML

Complexity

Conditions	3
Paths	2

Size

Total Lines	21
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
c	0
b	0
f	0
dl	0
loc	21
rs	9.3142
cc	3
eloc	12
nc	2
nop	1

<?php
namespace samsonphp\compressor;

/**
 * Class Minify_HTML
 * @package Minify
 */

/**
 * Compress HTML
 *
 * This is a heavy regex-based removal of whitespace, unnecessary comments and
 * tokens. IE conditional comments are preserved. There are also options to have
 * STYLE and SCRIPT blocks compressed by callback functions.
 *
 * A test suite is available.
 *
 * @package Minify
 * @author Stephen Clay <[email protected]>
 */
class Minify_HTML {

    /**
     * @var boolean
     */
    protected $_jsCleanComments = true;

    /**
     * "Minify" an HTML page
     *
     * @param string $html
     *
     * @param array $options
     *
     * 'cssMinifier' : (optional) callback function to process content of STYLE
     * elements.
     *
     * 'jsMinifier' : (optional) callback function to process content of SCRIPT
     * elements. Note: the type attribute is ignored.
     *
     * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If
     * unset, minify will sniff for an XHTML doctype.
     *
     * @return string
     */
    public static function minify($html, $options = array()) {
        $min = new self($html, $options);
        return $min->process();
    }


    /**
     * Create a minifier object
     *
     * @param string $html
     *
     * @param array $options
     *
     * 'cssMinifier' : (optional) callback function to process content of STYLE
     * elements.
     *
     * 'jsMinifier' : (optional) callback function to process content of SCRIPT
     * elements. Note: the type attribute is ignored.
     *
     * 'jsCleanComments' : (optional) whether to remove HTML comments beginning and end of script block
     *
     * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If
     * unset, minify will sniff for an XHTML doctype.
     *
     * @return null

     */
    public function __construct($html, $options = array())
    {
        $this->_html = str_replace("\r\n", "\n", trim($html));
class MyClass { }

$x = new MyClass();
$x->foo = true;
        if (isset($options['xhtml'])) {
            $this->_isXhtml = (bool)$options['xhtml'];
        }
        if (isset($options['cssMinifier'])) {
            $this->_cssMinifier = $options['cssMinifier'];
        }
        if (isset($options['jsMinifier'])) {
            $this->_jsMinifier = $options['jsMinifier'];
        }
        if (isset($options['jsCleanComments'])) {
            $this->_jsCleanComments = (bool)$options['jsCleanComments'];
        }
    }


    /**
     * Minify the markeup given in the constructor
     * 
     * @return string
     */
    public function process()
    {
        if ($this->_isXhtml === null) {
            $this->_isXhtml = (false !== strpos($this->_html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML'));
        }
        
        $this->_replacementHash = 'MINIFYHTML' . md5($_SERVER['REQUEST_TIME']);
        $this->_placeholders = array();
        
        // replace SCRIPTs (and minify) with placeholders
        $this->_html = preg_replace_callback(
            '/(\\s*)<script(\\b[^>]*?>)([\\s\\S]*?)<\\/script>(\\s*)/i'
            ,array($this, '_removeScriptCB')

            ,$this->_html);

        
        // replace STYLEs (and minify) with placeholders
        $this->_html = preg_replace_callback(
            '/\\s*<style(\\b[^>]*>)([\\s\\S]*?)<\\/style>\\s*/i'
            ,array($this, '_removeStyleCB')

            ,$this->_html);

        
        // remove HTML comments (not containing IE conditional comments).
        $this->_html = preg_replace_callback(
            '/<!--([\\s\\S]*?)-->/'
            ,array($this, '_commentCB')

            ,$this->_html);

        
        // replace PREs with placeholders
        $this->_html = preg_replace_callback('/\\s*<pre(\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i'
            ,array($this, '_removePreCB')

            ,$this->_html);

        
        // replace TEXTAREAs with placeholders
        $this->_html = preg_replace_callback(
            '/\\s*<textarea(\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i'
            ,array($this, '_removeTextareaCB')

            ,$this->_html);

        
        // trim each line.
        // @todo take into account attribute values that span multiple lines.
        $this->_html = preg_replace('/^\\s+|\\s+$/m', '', $this->_html);
        
        // remove ws around block/undisplayed elements
        $this->_html = preg_replace('/\\s+(<\\/?(?:area|base(?:font)?|blockquote|body'
            .'|caption|center|cite|col(?:group)?|dd|dir|div|dl|dt|fieldset|form'
            .'|frame(?:set)?|h[1-6]|head|hr|html|legend|li|link|map|menu|meta'
            .'|ol|opt(?:group|ion)|p|param|t(?:able|body|head|d|h||r|foot|itle)'
            .'|ul)\\b[^>]*>)/i', '$1', $this->_html);
        
        // remove ws outside of all elements
        $this->_html = preg_replace(
            '/>(\\s(?:\\s*))?([^<]+)(\\s(?:\s*))?</'
            ,'>$1$2$3<'

            ,$this->_html);

        
        // use newlines before 1st attribute in open tags (to limit line lengths)
        $this->_html = preg_replace('/(<[a-z\\-]+)\\s+([^>]+>)/i', "$1\n$2", $this->_html);
        
        // fill placeholders
        $this->_html = str_replace(
            array_keys($this->_placeholders)
            ,array_values($this->_placeholders)

            ,$this->_html

        );
        // issue 229: multi-pass to catch scripts that didn't get replaced in textareas
        $this->_html = str_replace(
            array_keys($this->_placeholders)
            ,array_values($this->_placeholders)

            ,$this->_html

        );
        return $this->_html;
    }
    
    protected function _commentCB($m)
    {
        return (0 === strpos($m[1], '[') || false !== strpos($m[1], '<!['))
            ? $m[0]
            : '';
    }
    
    protected function _reservePlace($content)
    {
        $placeholder = '%' . $this->_replacementHash . count($this->_placeholders) . '%';
        $this->_placeholders[$placeholder] = $content;
        return $placeholder;
    }

    protected $_isXhtml = null;
    protected $_replacementHash = null;
    protected $_placeholders = array();
    protected $_cssMinifier = null;
    protected $_jsMinifier = null;

    protected function _removePreCB($m)
    {
        return $this->_reservePlace("<pre{$m[1]}");
    }
    
    protected function _removeTextareaCB($m)
    {
        return $this->_reservePlace("<textarea{$m[1]}");
    }

    protected function _removeStyleCB($m)
    {
        $openStyle = "<style{$m[1]}";
        $css = $m[2];
        // remove HTML comments
        $css = preg_replace('/(?:^\\s*<!--|-->\\s*$)/', '', $css);
        
        // remove CDATA section markers
        $css = $this->_removeCdata($css);
        
        // minify
        $minifier = $this->_cssMinifier
            ? $this->_cssMinifier
            : 'trim';
        $css = call_user_func($minifier, $css);
        
        return $this->_reservePlace($this->_needsCdata($css)
            ? "{$openStyle}/*<![CDATA[*/{$css}/*]]>*/</style>"
            : "{$openStyle}{$css}</style>"
        );
    }

    protected function _removeScriptCB($m)
    {
        $openScript = "<script{$m[2]}";
        $js = $m[3];
        
        // whitespace surrounding? preserve at least one space
        $ws1 = ($m[1] === '') ? '' : ' ';
        $ws2 = ($m[4] === '') ? '' : ' ';

        // remove HTML comments (and ending "//" if present)
        if ($this->_jsCleanComments) {
            $js = preg_replace('/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/', '', $js);
        }

        // remove CDATA section markers
        $js = $this->_removeCdata($js);
        
        // minify
        $minifier = $this->_jsMinifier
            ? $this->_jsMinifier
            : 'trim';
        $js = call_user_func($minifier, $js);
        
        return $this->_reservePlace($this->_needsCdata($js)
            ? "{$ws1}{$openScript}/*<![CDATA[*/{$js}/*]]>*/</script>{$ws2}"
            : "{$ws1}{$openScript}{$js}</script>{$ws2}"
        );
    }

    protected function _removeCdata($str)
    {
        return (false !== strpos($str, '<![CDATA['))
            ? str_replace(array('<![CDATA[', ']]>'), '', $str)
            : $str;
    }
    
    protected function _needsCdata($str)
    {
        return ($this->_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str));
    }
}

1			<?php
2			namespace samsonphp\compressor;
3
4			/**
5			* Class Minify_HTML
6			* @package Minify
7			*/
8
9			/**
10			* Compress HTML
11			*
12			* This is a heavy regex-based removal of whitespace, unnecessary comments and
13			* tokens. IE conditional comments are preserved. There are also options to have
14			* STYLE and SCRIPT blocks compressed by callback functions.
15			*
16			* A test suite is available.
17			*
18			* @package Minify
19			* @author Stephen Clay <[email protected]>
20			*/
21			class Minify_HTML {
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report This class is not in CamelCase format. Classes in PHP are usually named in CamelCase. In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. The whole name starts with a capital letter as well. Thus the name database provider becomes `DatabaseProvider`. Loading history...
22			/**
23			* @var boolean
24			*/
25			protected $_jsCleanComments = true;
26
27			/**
28			* "Minify" an HTML page
29			*
30			* @param string $html
31			*
32			* @param array $options
33			*
34			* 'cssMinifier' : (optional) callback function to process content of STYLE
35			* elements.
36			*
37			* 'jsMinifier' : (optional) callback function to process content of SCRIPT
38			* elements. Note: the type attribute is ignored.
39			*
40			* 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If
41			* unset, minify will sniff for an XHTML doctype.
42			*
43			* @return string
44			*/
45			public static function minify($html, $options = array()) {
46			$min = new self($html, $options);
47			return $min->process();
48			}
49
50
51			/**
52			* Create a minifier object
53			*
54			* @param string $html
55			*
56			* @param array $options
57			*
58			* 'cssMinifier' : (optional) callback function to process content of STYLE
59			* elements.
60			*
61			* 'jsMinifier' : (optional) callback function to process content of SCRIPT
62			* elements. Note: the type attribute is ignored.
63			*
64			* 'jsCleanComments' : (optional) whether to remove HTML comments beginning and end of script block
65			*
66			* 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If
67			* unset, minify will sniff for an XHTML doctype.
68			*
69			* @return null
			0 ignored issues – show Comprehensibility Best Practice introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Adding a `@return` annotation to constructors is generally not recommended as a constructor does not have a meaningful return value. Adding a `@return` annotation to a constructor is not recommended, since a constructor does not have a meaningful return value. Please refer to the PHP core documentation on constructors. Loading history...
70			*/
71			public function __construct($html, $options = array())
72			{
73			$this->_html = str_replace("\r\n", "\n", trim($html));
			0 ignored issues – show Bug introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report The property `_html` does not exist. Did you maybe forget to declare it? In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code: class MyClass { } $x = new MyClass(); $x->foo = true; Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: class MyClass { public $foo; } $x = new MyClass(); $x->foo = true; Loading history...
74			if (isset($options['xhtml'])) {
75			$this->_isXhtml = (bool)$options['xhtml'];
76			}
77			if (isset($options['cssMinifier'])) {
78			$this->_cssMinifier = $options['cssMinifier'];
79			}
80			if (isset($options['jsMinifier'])) {
81			$this->_jsMinifier = $options['jsMinifier'];
82			}
83			if (isset($options['jsCleanComments'])) {
84			$this->_jsCleanComments = (bool)$options['jsCleanComments'];
85			}
86			}
87
88
89			/**
90			* Minify the markeup given in the constructor
91			*
92			* @return string
93			*/
94			public function process()
95			{
96			if ($this->_isXhtml === null) {
97			$this->_isXhtml = (false !== strpos($this->_html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML'));
98			}
99
100			$this->_replacementHash = 'MINIFYHTML' . md5($_SERVER['REQUEST_TIME']);
101			$this->_placeholders = array();
102
103			// replace SCRIPTs (and minify) with placeholders
104			$this->_html = preg_replace_callback(
105			'/(\\s)<script(\\b[^>]?>)([\\s\\S]?)<\\/script>(\\s)/i'
106			,array($this, '_removeScriptCB')
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
107			,$this->_html);
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
108
109			// replace STYLEs (and minify) with placeholders
110			$this->_html = preg_replace_callback(
111			'/\\s<style(\\b[^>]>)([\\s\\S]?)<\\/style>\\s/i'
112			,array($this, '_removeStyleCB')
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
113			,$this->_html);
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
114
115			// remove HTML comments (not containing IE conditional comments).
116			$this->_html = preg_replace_callback(
117			'/<!--([\\s\\S]*?)-->/'
118			,array($this, '_commentCB')
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
119			,$this->_html);
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
120
121			// replace PREs with placeholders
122			$this->_html = preg_replace_callback('/\\s<pre(\\b[^>]?>[\\s\\S]?<\\/pre>)\\s/i'
123			,array($this, '_removePreCB')
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
124			,$this->_html);
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
125
126			// replace TEXTAREAs with placeholders
127			$this->_html = preg_replace_callback(
128			'/\\s<textarea(\\b[^>]?>[\\s\\S]?<\\/textarea>)\\s/i'
129			,array($this, '_removeTextareaCB')
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
130			,$this->_html);
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
131
132			// trim each line.
133			// @todo take into account attribute values that span multiple lines.
134			$this->_html = preg_replace('/^\\s+\|\\s+$/m', '', $this->_html);
135
136			// remove ws around block/undisplayed elements
137			$this->_html = preg_replace('/\\s+(<\\/?(?:area\|base(?:font)?\|blockquote\|body'
138			.'\|caption\|center\|cite\|col(?:group)?\|dd\|dir\|div\|dl\|dt\|fieldset\|form'
139			.'\|frame(?:set)?\|h[1-6]\|head\|hr\|html\|legend\|li\|link\|map\|menu\|meta'
140			.'\|ol\|opt(?:group\|ion)\|p\|param\|t(?:able\|body\|head\|d\|h\|\|r\|foot\|itle)'
141			.'\|ul)\\b[^>]*>)/i', '$1', $this->_html);
142
143			// remove ws outside of all elements
144			$this->_html = preg_replace(
145			'/>(\\s(?:\\s))?([^<]+)(\\s(?:\s))?</'
146			,'>$1$2$3<'
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
147			,$this->_html);
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
148
149			// use newlines before 1st attribute in open tags (to limit line lengths)
150			$this->_html = preg_replace('/(<[a-z\\-]+)\\s+([^>]+>)/i', "$1\n$2", $this->_html);
151
152			// fill placeholders
153			$this->_html = str_replace(
154			array_keys($this->_placeholders)
155			,array_values($this->_placeholders)
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
156			,$this->_html
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
157			);
158			// issue 229: multi-pass to catch scripts that didn't get replaced in textareas
159			$this->_html = str_replace(
160			array_keys($this->_placeholders)
161			,array_values($this->_placeholders)
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
162			,$this->_html
			0 ignored issues – show Coding Style introduced 2015-11-23 16:09 UTC by Report Bug Copy Issue Report Space found before comma in function call Loading history...
163			);
164			return $this->_html;
165			}
166
167			protected function _commentCB($m)
168			{
169			return (0 === strpos($m[1], '[') \|\| false !== strpos($m[1], '<!['))
170			? $m[0]
171			: '';
172			}
173
174			protected function _reservePlace($content)
175			{
176			$placeholder = '%' . $this->_replacementHash . count($this->_placeholders) . '%';
177			$this->_placeholders[$placeholder] = $content;
178			return $placeholder;
179			}
180
181			protected $_isXhtml = null;
182			protected $_replacementHash = null;
183			protected $_placeholders = array();
184			protected $_cssMinifier = null;
185			protected $_jsMinifier = null;
186
187			protected function _removePreCB($m)
188			{
189			return $this->_reservePlace("<pre{$m[1]}");
190			}
191
192			protected function _removeTextareaCB($m)
193			{
194			return $this->_reservePlace("<textarea{$m[1]}");
195			}
196
197			protected function _removeStyleCB($m)
198			{
199			$openStyle = "<style{$m[1]}";
200			$css = $m[2];
201			// remove HTML comments
202			$css = preg_replace('/(?:^\\s<!--\|-->\\s$)/', '', $css);
203
204			// remove CDATA section markers
205			$css = $this->_removeCdata($css);
206
207			// minify
208			$minifier = $this->_cssMinifier
209			? $this->_cssMinifier
210			: 'trim';
211			$css = call_user_func($minifier, $css);
212
213			return $this->_reservePlace($this->_needsCdata($css)
214			? "{$openStyle}/<![CDATA[/{$css}/]]>/</style>"
215			: "{$openStyle}{$css}</style>"
216			);
217			}
218
219			protected function _removeScriptCB($m)
220			{
221			$openScript = "<script{$m[2]}";
222			$js = $m[3];
223
224			// whitespace surrounding? preserve at least one space
225			$ws1 = ($m[1] === '') ? '' : ' ';
226			$ws2 = ($m[4] === '') ? '' : ' ';
227
228			// remove HTML comments (and ending "//" if present)
229			if ($this->_jsCleanComments) {
230			$js = preg_replace('/(?:^\\s<!--\\s\|\\s(?:\\/\\/)?\\s-->\\s*$)/', '', $js);
231			}
232
233			// remove CDATA section markers
234			$js = $this->_removeCdata($js);
235
236			// minify
237			$minifier = $this->_jsMinifier
238			? $this->_jsMinifier
239			: 'trim';
240			$js = call_user_func($minifier, $js);
241
242			return $this->_reservePlace($this->_needsCdata($js)
243			? "{$ws1}{$openScript}/<![CDATA[/{$js}/]]>/</script>{$ws2}"
244			: "{$ws1}{$openScript}{$js}</script>{$ws2}"
245			);
246			}
247
248			protected function _removeCdata($str)
249			{
250			return (false !== strpos($str, '<![CDATA['))
251			? str_replace(array('<![CDATA[', ']]>'), '', $str)
252			: $str;
253			}
254
255			protected function _needsCdata($str)
256			{
257			return ($this->_isXhtml && preg_match('/(?:[<&]\|\\-\\-\|\\]\\]>)/', $str));
258			}
259			}

samsonos / php_compressor

Minify_HTML::_removeStyleCB() A last analyzed 2016-09-19 15:20 UTC

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Minify_HTML::_removeStyleCB() A
last analyzed 2016-09-19 15:20 UTC