Assets_processing::css() - Code Metrics - Inspection of "It is almost 2017 and HTTP/2 is here, let's stop i..." - nazar-pc/CleverStyle-Framework - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 3c0bb6...7f5b44 )

by Nazar

created 2016-12-14 02:20 UTC

Assets_processing::css() C

↳ Parent: Assets_processing

Complexity

Conditions	8
Paths	1

Size

Total Lines	92
Code Lines	50

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	41
CRAP Score	8.0064

Importance

Changes

Metric	Value
cc	8
eloc	50
nc	1
nop	4
dl	0
loc	92
ccs	41
cts	43
cp	0.9535
crap	8.0064
rs	5.538
c	0
b	0
f	0

How to fix Long Method

<?php
/**
 * @package   CleverStyle Framework
 * @author    Nazar Mokrynskyi <[email protected]>
 * @copyright Copyright (c) 2014-2016, Nazar Mokrynskyi
 * @license   MIT License, see license.txt
 */
namespace cs\Page;

/**
 * Class includes few methods used for processing CSS, JS and HTML files before putting into cache
 *
 * This is because CSS and HTML files may include other CSS, JS files, images, fonts and so on with absolute and relative paths.
 * Methods of this class handle all this assets, applies basic minification to CSS and JS files and produce single resulting file (relative paths to
 * files that can't be embedded are converted to absolute). This allows to decrease number of HTTP requests on page and avoid breaking of relative paths for
 * fonts, images and other assets after putting them into cache directory as well as minimize contents size by removing comments and other redundant stuff.
 */
class Assets_processing {
	/**
	 * Do not inline files bigger than 4 KiB
	 */
	const MAX_EMBEDDING_SIZE = 4096;
	protected static $extension_to_mime = [
		'jpeg' => 'image/jpg',
		'jpe'  => 'image/jpg',
		'jpg'  => 'image/jpg',
		'gif'  => 'image/gif',
		'png'  => 'image/png',
		'svg'  => 'image/svg+xml',
		'svgz' => 'image/svg+xml',
		'woff' => 'application/font-woff',
		//'woff2' => 'application/font-woff2'
	];
	/**
	 * Analyses file for images, fonts and css links and include they content into single resulting css file.
	 *
	 * Supports next file extensions for possible assets:
	 * jpeg, jpe, jpg, gif, png, ttf, ttc, svg, svgz, woff, css
	 *
	 * @param string   $data                   Content of processed file
	 * @param string   $file                   Path to file, that contains specified in previous parameter content
	 * @param string   $target_directory_path  Target directory for resulting combined files
	 * @param string[] $not_embedded_resources Some resources like images and fonts might not be embedded into resulting CSS because of their size
	 *
	 * @return string    $data
	 */
	public static function css ($data, $file, $target_directory_path = PUBLIC_CACHE, &$not_embedded_resources = []) {
		$dir = dirname($file);
		/**
		 * Remove comments, tabs and new lines
		 */
		$data = preg_replace('#(/\*.*?\*/)|\t|\n|\r#s', ' ', $data);
		/**
		 * Remove unnecessary spaces
		 */
		$data = preg_replace('/\s*([,;>{}(])\s*/', '$1', $data);
		$data = preg_replace('/\s+/', ' ', $data);
		/**
		 * Return spaces required in media queries
		 */
		$data = preg_replace('/\s(and|or)\(/', ' $1 (', $data);
		/**
		 * Duplicated semicolons
		 */
		$data = preg_replace('/;+/m', ';', $data);
		/**
		 * Minify rgb colors declarations
		 */
		$data = preg_replace_callback(
			'/rgb\(([0-9,.]+)\)/i',
			function ($rgb) {
				$rgb = explode(',', $rgb[1]);
				return
					'#'.
					str_pad(dechex($rgb[0]), 2, 0, STR_PAD_LEFT).
					str_pad(dechex($rgb[1]), 2, 0, STR_PAD_LEFT).
					str_pad(dechex($rgb[2]), 2, 0, STR_PAD_LEFT);
			},
			$data
		);
		/**
		 * Minify repeated colors declarations
		 */
		$data = preg_replace('/#([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3/i', '#$1$2$3', $data);
		/**
		 * Remove unnecessary zeros
		 */
		$data = preg_replace('/(\D)0\.(\d+)/i', '$1.$2', $data);
		/**
		 * Unnecessary spaces around colons (should have whitespace character after, otherwise `.class :disabled` will be handled incorrectly)
		 */
		$data = preg_replace('/\s*:\s+/', ':', $data);
		/**
		 * Assets processing
		 */
		// TODO: replace by loop, track duplicated stuff that are subject to inlining and if they appear more than once, don't inline them
		$data = preg_replace_callback(
			'/url\((.*)\)|@import\s*(?:url\()?\s*([\'"].*[\'"])\s*\)??(.*);/U',
			function ($match) use ($dir, $target_directory_path, &$not_embedded_resources) {
				$path_matched = @$match[2] ?: $match[1];
				$path         = trim($path_matched, '\'" ');
				$link         = explode('?', $path, 2)[0];
				if (!static::is_relative_path_and_exists($link, $dir)) {
					return $match[0];
				}
				$extension     = file_extension($link);
				$absolute_path = static::absolute_path($link, $dir);
				$content       = file_get_contents($absolute_path);
				if ($extension == 'css' && @$match[2]) {
					/**
					 * Only inline CSS imports without media queries, imports with media queries will be placed as separate files
					 */
					if (!trim(@$match[3])) {
						return static::css($content, $absolute_path, $target_directory_path, $not_embedded_resources);
					} else {
						$filename = static::file_put_contents_with_hash(
							$target_directory_path,
							$extension,
							static::css($content, $absolute_path, $target_directory_path)
						);
						return str_replace($path_matched, "'./$filename'", $match[0]);
					}
				}
				if (!isset(static::$extension_to_mime[$extension])) {
					$filename = static::file_put_contents_with_hash($target_directory_path, $extension, $content);
					return str_replace($path_matched, "'./$filename'", $match[0]);
				}
				$filename = md5_file($absolute_path).'.'.$extension;
				copy($absolute_path, "$target_directory_path/$filename");
				if (strpos($path, '?') === false) {
					$not_embedded_resources[] = str_replace(getcwd(), '', "$target_directory_path/$filename");
				}
				return str_replace($path_matched, "'./$filename'", $match[0]);
			},
			$data
		);
		return trim($data);
	}
	/**
	 * Put `$content` into `$dir` where filename is `md5($content)` with specified extension
	 *
	 * @param string $dir
	 * @param string $extension
	 * @param string $content
	 *
	 * @return string Filename (without full path)
	 */
	protected static function file_put_contents_with_hash ($dir, $extension, $content) {
		$hash = md5($content);
		file_put_contents("$dir/$hash.$extension", $content, LOCK_EX | FILE_BINARY);
		return "$hash.$extension";
	}
	/**
	 * Simple and fast JS minification
	 *
	 * @param string $data
	 *
	 * @return string
	 */
	public static function js ($data) {
		/**
		 * Split into array of lines
		 */
		$data = explode("\n", $data);
		/**
		 * Flag that is `true` when inside comment
		 */
		$in_comment              = false;
		$continue_after_position = -1;
		foreach ($data as $index => &$current_line) {
			if ($continue_after_position >= $index) {
				continue;
			}
			$next_line = isset($data[$index + 1]) ? trim($data[$index + 1]) : '';
			/**
			 * Remove starting and trailing spaces
			 */
			$current_line = trim($current_line);
			/**
			 * Remove single-line comments
			 */
			if (mb_strpos($current_line, '//') === 0) {
				$current_line = '';
				continue;
			}
			/**
			 * Starts with multi-line comment
			 */
			if (mb_strpos($current_line, '/*') === 0) {
				$in_comment = true;
			}
			if (!$in_comment) {
				$backticks_position = strpos($current_line, '`');
				/**
				 * Handling template strings can be tricky (since they might be multi-line), so let's fast-forward to the last backticks position and continue
				 * from there
				 */
				if ($backticks_position !== false) {
					$last_item_with_backticks = array_keys(
						array_filter(
							$data,
							function ($d) {
								return strpos($d, '`') !== false;
							}
						)
					);
					$last_item_with_backticks = array_pop($last_item_with_backticks);
					if ($last_item_with_backticks > $index) {
						$continue_after_position = $last_item_with_backticks;
						continue;
					}
				}
				/**
				 * Add new line at the end if only needed
				 */
				if (static::new_line_needed($current_line, $next_line)) {
					$current_line .= "\n";
				}
				/**
				 * Single-line comment
				 */
				$current_line = preg_replace('#^\s*//[^\'"]+$#', '', $current_line);
				/**
				 * If we are not sure - just add new line afterwards
				 */
				$current_line = preg_replace('#//.*$#', "\\0\n", $current_line);
			} else {
				/**
				 * End of multi-line comment
				 */
				if (strpos($current_line, '*/') !== false) {
					$current_line = explode('*/', $current_line)[1];
					$in_comment   = false;
				} else {
					$current_line = '';
				}
			}
		}
		$data = implode('', $data);
		$data = str_replace('</script>', '<\/script>', $data);
		return trim($data, ';').';';
	}
	/**
	 * @param string $current_line
	 * @param string $next_line
	 *
	 * @return bool
	 */
	protected static function new_line_needed ($current_line, $next_line) {
		/**
		 * Set of symbols that are safe to be concatenated without new line with anything else
		 */
		$regexp = /** @lang PhpRegExp */
			'[:;,.+\-*/{}?><^\'"\[\]=&(]';
		return
			$current_line &&
			$next_line &&
			!preg_match("#$regexp\$#", $current_line) &&
			!preg_match("#^$regexp#", $next_line);
	}
	/**
	 * Analyses file for scripts and styles, combines them into resulting files in order to optimize loading process
	 * (files with combined scripts and styles will be created)
	 *
	 * @param string   $data                   Content of processed file
	 * @param string   $file                   Path to file, that contains specified in previous parameter content
	 * @param string   $target_directory_path  Target directory for resulting combined files
	 * @param bool     $vulcanization          Whether to put combined files separately or to make included assets built-in (vulcanization)
	 * @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
	 *
	 * @return string
	 */
	public static function html ($data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources = []) {
		static::html_process_links_and_styles($data, $file, $target_directory_path, $vulcanization, $not_embedded_resources);
		static::html_process_scripts($data, $file, $target_directory_path, $vulcanization, $not_embedded_resources);
		// Removing HTML comments (those that are mostly likely comments, to avoid problems)
		$data = preg_replace_callback(
			'/^\s*<!--([^>-].*[^-])?-->/Ums',
			function ($matches) {
				return mb_strpos('--', $matches[1]) === false ? '' : $matches[0];
			},
			$data
		);
		return preg_replace("/\n+/", "\n", $data);
	}
	/**
	 * @param string   $data                   Content of processed file
	 * @param string   $file                   Path to file, that contains specified in previous parameter content
	 * @param string   $target_directory_path  Target directory for resulting combined files
	 * @param bool     $vulcanization          Whether to put combined files separately or to make included assets built-in (vulcanization)
	 * @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
	 */
	protected static function html_process_scripts (&$data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources) {
		if (!preg_match_all('/<script(.*)<\/script>/Uims', $data, $scripts)) {
			return;
		}
		$scripts_content    = '';
		$scripts_to_replace = [];
		$dir                = dirname($file);
		foreach ($scripts[1] as $index => $script) {
			$script = explode('>', $script, 2);
			if (preg_match('/src\s*=\s*[\'"](.*)[\'"]/Uims', $script[0], $url)) {
				$url = $url[1];
				if (!static::is_relative_path_and_exists($url, $dir)) {
					continue;
				}
				$scripts_to_replace[] = $scripts[0][$index];
				$scripts_content .= file_get_contents("$dir/$url").";\n";
			} else {
				$scripts_to_replace[] = $scripts[0][$index];
				$scripts_content .= "$script[1];\n";
			}
		}
		$scripts_content = static::js($scripts_content);
		if (!$scripts_to_replace) {
			return;
		}
		// Remove all scripts
		$data = str_replace($scripts_to_replace, '', $data);
		/**
		 * If vulcanization is not used - put contents into separate file, and put link to it, otherwise put minified content back
		 */
		if (!$vulcanization) {
			// TODO: Remove in 7.x; For backward compatibility, since some modules might use this by specifying file path
			if (!is_dir($target_directory_path)) {
				$target_directory_path = dirname($target_directory_path);
			}
			$filename = static::file_put_contents_with_hash($target_directory_path, 'js', $scripts_content);
			// Add script with combined content file to the end
			$data .= "<script src=\"./$filename\"></script>";
			$not_embedded_resources[] = str_replace(getcwd(), '', "$target_directory_path/$filename");
		} else {
			// Add combined content inline script to the end
			$data .= "<script>$scripts_content</script>";
		}
	}
	/**
	 * @param string   $data                   Content of processed file
	 * @param string   $file                   Path to file, that contains specified in previous parameter content
	 * @param string   $target_directory_path  Target directory for resulting combined files
	 * @param bool     $vulcanization          Whether to put combined files separately or to make included assets built-in (vulcanization)
	 * @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
	 */
	protected static function html_process_links_and_styles (&$data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources) {
		// Drop Polymer inclusion, since it is already present
		$data = str_replace('<link rel="import" href="../polymer/polymer.html">', '', $data);
		if (!preg_match_all('/<link(.*)>|<style(.*)<\/style>/Uims', $data, $links_and_styles)) {
			return;
		}
		$dir = dirname($file);
		foreach ($links_and_styles[1] as $index => $link) {
			/**
			 * Check for custom styles `is="custom-style"` or styles includes `include=".."` - we'll skip them
			 * Or if content is plain CSS
			 */
			if (
				preg_match('/^[^>]*(is="custom-style"|include=)[^>]*>/Uim', $links_and_styles[2][$index]) ||
				mb_strpos($links_and_styles[0][$index], '</style>') > 0
			) {
				$content = explode('>', $links_and_styles[2][$index], 2)[1];
				$data    = str_replace(
					$content,
					static::css($content, $file, $target_directory_path, $not_embedded_resources),
					$data
				);
				continue;
			}
			if (!static::has_relative_href($link, $url, $dir)) {
				continue;
			}
			$import = preg_match('/rel\s*=\s*[\'"]import[\'"]/Uim', $link);
			/**
			 * CSS imports are available in Polymer alongside with HTML imports
			 */
			$css_import = $import && preg_match('/type\s*=\s*[\'"]css[\'"]/Uim', $link);
			$stylesheet = preg_match('/rel\s*=\s*[\'"]stylesheet[\'"]/Uim', $link);
			// TODO: Polymer only supports `style[is=custom-style]`, but no `link`-based counterpart, so we can't provide CSP-compatibility for CSS anyway
			if ($css_import || $stylesheet) {
				/**
				 * If content is link to CSS file
				 */
				$css  = static::css(
					file_get_contents("$dir/$url"),
					"$dir/$url",
					$target_directory_path,
					$not_embedded_resources
				);
				$data = preg_replace(
					'/'.$links_and_styles[0][$index].'.*<template>/Uims',
					"<template><style>$css</style>",
					$data
				);
			} elseif ($import) {
				/**
				 * If content is HTML import
				 */
				$data = str_replace(
					$links_and_styles[0][$index],
					static::html(
						file_get_contents("$dir/$url"),
						"$dir/$url",
						$target_directory_path,
						$vulcanization,
						$not_embedded_resources
					),
					$data
				);
			}
		}
	}
	/**
	 * @param string $link
	 * @param string $url
	 * @param string $dir
	 *
	 * @return bool
	 */
	protected static function has_relative_href ($link, &$url, $dir) {
		$result =
			$link &&
			preg_match('/href\s*=\s*[\'"](.*)[\'"]/Uims', $link, $url);
		if ($result && static::is_relative_path_and_exists($url[1], $dir)) {
			$url = $url[1];
			return true;
		}
		return false;
	}
	/**
	 * @param string $path
	 * @param string $dir
	 *
	 * @return bool
	 */
	protected static function is_relative_path_and_exists ($path, $dir) {
		return $dir && !preg_match('#^https?://#i', $path) && file_exists(static::absolute_path($path, $dir));
	}
	/**
	 * @param string $path
	 * @param string $dir
	 *
	 * @return string
	 */
	protected static function absolute_path ($path, $dir) {
		if (strpos($path, '/') === 0) {
			return realpath(getcwd().$path);
		}
		return realpath("$dir/$path");
	}
}


1		<?php
2		/**
3		* @package CleverStyle Framework
4		* @author Nazar Mokrynskyi <[email protected]>
5		* @copyright Copyright (c) 2014-2016, Nazar Mokrynskyi
6		* @license MIT License, see license.txt
7		*/
8		namespace cs\Page;
9
10		/**
11		* Class includes few methods used for processing CSS, JS and HTML files before putting into cache
12		*
13		* This is because CSS and HTML files may include other CSS, JS files, images, fonts and so on with absolute and relative paths.
14		* Methods of this class handle all this assets, applies basic minification to CSS and JS files and produce single resulting file (relative paths to
15		* files that can't be embedded are converted to absolute). This allows to decrease number of HTTP requests on page and avoid breaking of relative paths for
16		* fonts, images and other assets after putting them into cache directory as well as minimize contents size by removing comments and other redundant stuff.
17		*/
18		class Assets_processing {
19		/**
20		* Do not inline files bigger than 4 KiB
21		*/
22		const MAX_EMBEDDING_SIZE = 4096;
23		protected static $extension_to_mime = [
24		'jpeg' => 'image/jpg',
25		'jpe' => 'image/jpg',
26		'jpg' => 'image/jpg',
27		'gif' => 'image/gif',
28		'png' => 'image/png',
29		'svg' => 'image/svg+xml',
30		'svgz' => 'image/svg+xml',
31		'woff' => 'application/font-woff',
32		//'woff2' => 'application/font-woff2'
33		];
34		/**
35		* Analyses file for images, fonts and css links and include they content into single resulting css file.
36		*
37		* Supports next file extensions for possible assets:
38		* jpeg, jpe, jpg, gif, png, ttf, ttc, svg, svgz, woff, css
39		*
40		* @param string $data Content of processed file
41		* @param string $file Path to file, that contains specified in previous parameter content
42		* @param string $target_directory_path Target directory for resulting combined files
43		* @param string[] $not_embedded_resources Some resources like images and fonts might not be embedded into resulting CSS because of their size
44		*
45		* @return string $data
46		*/
47	10	public static function css ($data, $file, $target_directory_path = PUBLIC_CACHE, &$not_embedded_resources = []) {
48	10	$dir = dirname($file);
49		/**
50		* Remove comments, tabs and new lines
51		*/
52	10	$data = preg_replace('#(/\.?\*/)\|\t\|\n\|\r#s', ' ', $data);
53		/**
54		* Remove unnecessary spaces
55		*/
56	10	$data = preg_replace('/\s([,;>{}(])\s/', '$1', $data);
57	10	$data = preg_replace('/\s+/', ' ', $data);
58		/**
59		* Return spaces required in media queries
60		*/
61	10	$data = preg_replace('/\s(and\|or)\(/', ' $1 (', $data);
62		/**
63		* Duplicated semicolons
64		*/
65	10	$data = preg_replace('/;+/m', ';', $data);
66		/**
67		* Minify rgb colors declarations
68		*/
69	10	$data = preg_replace_callback(
70	10	'/rgb\(([0-9,.]+)\)/i',
71		function ($rgb) {
72	6	$rgb = explode(',', $rgb[1]);
73		return
74		'#'.
75	6	str_pad(dechex($rgb[0]), 2, 0, STR_PAD_LEFT).
76	6	str_pad(dechex($rgb[1]), 2, 0, STR_PAD_LEFT).
77	6	str_pad(dechex($rgb[2]), 2, 0, STR_PAD_LEFT);
78	10	},
79		$data
80		);
81		/**
82		* Minify repeated colors declarations
83		*/
84	10	$data = preg_replace('/#([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3/i', '#$1$2$3', $data);
85		/**
86		* Remove unnecessary zeros
87		*/
88	10	$data = preg_replace('/(\D)0\.(\d+)/i', '$1.$2', $data);
89		/**
90		* Unnecessary spaces around colons (should have whitespace character after, otherwise `.class :disabled` will be handled incorrectly)
91		*/
92	10	$data = preg_replace('/\s*:\s+/', ':', $data);
93		/**
94		* Assets processing
95		*/
96		// TODO: replace by loop, track duplicated stuff that are subject to inlining and if they appear more than once, don't inline them
97	10	$data = preg_replace_callback(
98	10	'/url\((.)\)\|@import\s(?:url\()?\s([\'"].[\'"])\s\)??(.);/U',
99		function ($match) use ($dir, $target_directory_path, &$not_embedded_resources) {
100	10	$path_matched = @$match[2] ?: $match[1];
101	10	$path = trim($path_matched, '\'" ');
102	10	$link = explode('?', $path, 2)[0];
103	10	if (!static::is_relative_path_and_exists($link, $dir)) {
104	4	return $match[0];
105		}
106	10	$extension = file_extension($link);
107	10	$absolute_path = static::absolute_path($link, $dir);
108	10	$content = file_get_contents($absolute_path);
109	10	if ($extension == 'css' && @$match[2]) {
110		/**
111		* Only inline CSS imports without media queries, imports with media queries will be placed as separate files
112		*/
113	6	if (!trim(@$match[3])) {
114	6	return static::css($content, $absolute_path, $target_directory_path, $not_embedded_resources);
115		} else {
116	6	$filename = static::file_put_contents_with_hash(
117		$target_directory_path,
118		$extension,
119	6	static::css($content, $absolute_path, $target_directory_path)
120		);
121	6	return str_replace($path_matched, "'./$filename'", $match[0]);
122		}
123		}
124	10	if (!isset(static::$extension_to_mime[$extension])) {
125		$filename = static::file_put_contents_with_hash($target_directory_path, $extension, $content);
126		return str_replace($path_matched, "'./$filename'", $match[0]);
127		}
128	10	$filename = md5_file($absolute_path).'.'.$extension;
129	10	copy($absolute_path, "$target_directory_path/$filename");
130	10	if (strpos($path, '?') === false) {
131	6	$not_embedded_resources[] = str_replace(getcwd(), '', "$target_directory_path/$filename");
132		}
133	10	return str_replace($path_matched, "'./$filename'", $match[0]);
134	10	},
135		$data
136		);
137	10	return trim($data);
138		}
139		/**
140		* Put `$content` into `$dir` where filename is `md5($content)` with specified extension
141		*
142		* @param string $dir
143		* @param string $extension
144		* @param string $content
145		*
146		* @return string Filename (without full path)
147		*/
148	6	protected static function file_put_contents_with_hash ($dir, $extension, $content) {
149	6	$hash = md5($content);
150	6	file_put_contents("$dir/$hash.$extension", $content, LOCK_EX \| FILE_BINARY);
151	6	return "$hash.$extension";
152		}
153		/**
154		* Simple and fast JS minification
155		*
156		* @param string $data
157		*
158		* @return string
159		*/
160	10	public static function js ($data) {
161		/**
162		* Split into array of lines
163		*/
164	10	$data = explode("\n", $data);
165		/**
166		* Flag that is `true` when inside comment
167		*/
168	10	$in_comment = false;
169	10	$continue_after_position = -1;
170	10	foreach ($data as $index => &$current_line) {
171	10	if ($continue_after_position >= $index) {
172	6	continue;
173		}
174	10	$next_line = isset($data[$index + 1]) ? trim($data[$index + 1]) : '';
175		/**
176		* Remove starting and trailing spaces
177		*/
178	10	$current_line = trim($current_line);
179		/**
180		* Remove single-line comments
181		*/
182	10	if (mb_strpos($current_line, '//') === 0) {
183	10	$current_line = '';
184	10	continue;
185		}
186		/**
187		* Starts with multi-line comment
188		*/
189	10	if (mb_strpos($current_line, '/*') === 0) {
190	10	$in_comment = true;
191		}
192	10	if (!$in_comment) {
193	10	$backticks_position = strpos($current_line, '`');
194		/**
195		* Handling template strings can be tricky (since they might be multi-line), so let's fast-forward to the last backticks position and continue
196		* from there
197		*/
198	10	if ($backticks_position !== false) {
199	6	$last_item_with_backticks = array_keys(
200		array_filter(
201		$data,
202		function ($d) {
203	6	return strpos($d, '`') !== false;
204	6	}
205		)
206		);
207	6	$last_item_with_backticks = array_pop($last_item_with_backticks);
208	6	if ($last_item_with_backticks > $index) {
209	6	$continue_after_position = $last_item_with_backticks;
210	6	continue;
211		}
212		}
213		/**
214		* Add new line at the end if only needed
215		*/
216	10	if (static::new_line_needed($current_line, $next_line)) {
217	10	$current_line .= "\n";
218		}
219		/**
220		* Single-line comment
221		*/
222	10	$current_line = preg_replace('#^\s*//[^\'"]+$#', '', $current_line);
223		/**
224		* If we are not sure - just add new line afterwards
225		*/
226	10	$current_line = preg_replace('#//.*$#', "\\0\n", $current_line);
227		} else {
228		/**
229		* End of multi-line comment
230		*/
231	10	if (strpos($current_line, '*/') !== false) {
232	10	$current_line = explode('*/', $current_line)[1];
233	10	$in_comment = false;
234		} else {
235	10	$current_line = '';
236		}
237		}
238		}
239	10	$data = implode('', $data);
240	10	$data = str_replace('</script>', '<\/script>', $data);
241	10	return trim($data, ';').';';
242		}
243		/**
244		* @param string $current_line
245		* @param string $next_line
246		*
247		* @return bool
248		*/
249	10	protected static function new_line_needed ($current_line, $next_line) {
250		/**
251		* Set of symbols that are safe to be concatenated without new line with anything else
252		*/
253		$regexp = /** @lang PhpRegExp */
254	10	'[:;,.+\-*/{}?><^\'"\[\]=&(]';
255		return
256	10	$current_line &&
257	10	$next_line &&
258	10	!preg_match("#$regexp\$#", $current_line) &&
259	10	!preg_match("#^$regexp#", $next_line);
260		}
261		/**
262		* Analyses file for scripts and styles, combines them into resulting files in order to optimize loading process
263		* (files with combined scripts and styles will be created)
264		*
265		* @param string $data Content of processed file
266		* @param string $file Path to file, that contains specified in previous parameter content
267		* @param string $target_directory_path Target directory for resulting combined files
268		* @param bool $vulcanization Whether to put combined files separately or to make included assets built-in (vulcanization)
269		* @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
270		*
271		* @return string
272		*/
273	8	public static function html ($data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources = []) {
274	8	static::html_process_links_and_styles($data, $file, $target_directory_path, $vulcanization, $not_embedded_resources);
275	8	static::html_process_scripts($data, $file, $target_directory_path, $vulcanization, $not_embedded_resources);
276		// Removing HTML comments (those that are mostly likely comments, to avoid problems)
277	8	$data = preg_replace_callback(
278	8	'/^\s<!--([^>-].[^-])?-->/Ums',
279	8	function ($matches) {
280	8	return mb_strpos('--', $matches[1]) === false ? '' : $matches[0];
281	8	},
282		$data
283		);
284	8	return preg_replace("/\n+/", "\n", $data);
285		}
286		/**
287		* @param string $data Content of processed file
288		* @param string $file Path to file, that contains specified in previous parameter content
289		* @param string $target_directory_path Target directory for resulting combined files
290		* @param bool $vulcanization Whether to put combined files separately or to make included assets built-in (vulcanization)
291		* @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
292		*/
293	8	protected static function html_process_scripts (&$data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources) {
294	8	if (!preg_match_all('/<script(.*)<\/script>/Uims', $data, $scripts)) {
295	8	return;
296		}
297	8	$scripts_content = '';
298	8	$scripts_to_replace = [];
299	8	$dir = dirname($file);
300	8	foreach ($scripts[1] as $index => $script) {
301	8	$script = explode('>', $script, 2);
302	8	if (preg_match('/src\s=\s[\'"](.*)[\'"]/Uims', $script[0], $url)) {
303	8	$url = $url[1];
304	8	if (!static::is_relative_path_and_exists($url, $dir)) {
305	4	continue;
306		}
307	8	$scripts_to_replace[] = $scripts[0][$index];
308	8	$scripts_content .= file_get_contents("$dir/$url").";\n";
309		} else {
310	8	$scripts_to_replace[] = $scripts[0][$index];
311	8	$scripts_content .= "$script[1];\n";
312		}
313		}
314	8	$scripts_content = static::js($scripts_content);
315	8	if (!$scripts_to_replace) {
316	4	return;
317		}
318		// Remove all scripts
319	8	$data = str_replace($scripts_to_replace, '', $data);
320		/**
321		* If vulcanization is not used - put contents into separate file, and put link to it, otherwise put minified content back
322		*/
323	8	if (!$vulcanization) {
324		// TODO: Remove in 7.x; For backward compatibility, since some modules might use this by specifying file path
325	2	if (!is_dir($target_directory_path)) {
326		$target_directory_path = dirname($target_directory_path);
327		}
328	2	$filename = static::file_put_contents_with_hash($target_directory_path, 'js', $scripts_content);
329		// Add script with combined content file to the end
330	2	$data .= "<script src=\"./$filename\"></script>";
331	2	$not_embedded_resources[] = str_replace(getcwd(), '', "$target_directory_path/$filename");
332		} else {
333		// Add combined content inline script to the end
334	6	$data .= "<script>$scripts_content</script>";
335		}
336	8	}
337		/**
338		* @param string $data Content of processed file
339		* @param string $file Path to file, that contains specified in previous parameter content
340		* @param string $target_directory_path Target directory for resulting combined files
341		* @param bool $vulcanization Whether to put combined files separately or to make included assets built-in (vulcanization)
342		* @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
343		*/
344	8	protected static function html_process_links_and_styles (&$data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources) {
345		// Drop Polymer inclusion, since it is already present
346	8	$data = str_replace('<link rel="import" href="../polymer/polymer.html">', '', $data);
347	8	if (!preg_match_all('/<link(.)>\|<style(.)<\/style>/Uims', $data, $links_and_styles)) {
348	8	return;
349		}
350	8	$dir = dirname($file);
351	8	foreach ($links_and_styles[1] as $index => $link) {
352		/**
353		* Check for custom styles `is="custom-style"` or styles includes `include=".."` - we'll skip them
354		* Or if content is plain CSS
355		*/
356		if (
357	8	preg_match('/^[^>](is="custom-style"\|include=)[^>]>/Uim', $links_and_styles[2][$index]) \|\|
358	8	mb_strpos($links_and_styles[0][$index], '</style>') > 0
359		) {
360	8	$content = explode('>', $links_and_styles[2][$index], 2)[1];
361	8	$data = str_replace(
362		$content,
363	8	static::css($content, $file, $target_directory_path, $not_embedded_resources),
364		$data
365		);
366	8	continue;
367		}
368	8	if (!static::has_relative_href($link, $url, $dir)) {
369	4	continue;
370		}
371	8	$import = preg_match('/rel\s=\s[\'"]import[\'"]/Uim', $link);
372		/**
373		* CSS imports are available in Polymer alongside with HTML imports
374		*/
375	8	$css_import = $import && preg_match('/type\s=\s[\'"]css[\'"]/Uim', $link);
376	8	$stylesheet = preg_match('/rel\s=\s[\'"]stylesheet[\'"]/Uim', $link);
377		// TODO: Polymer only supports `style[is=custom-style]`, but no `link`-based counterpart, so we can't provide CSP-compatibility for CSS anyway
378	8	if ($css_import \|\| $stylesheet) {
379		/**
380		* If content is link to CSS file
381		*/
382	8	$css = static::css(
383	8	file_get_contents("$dir/$url"),
384	8	"$dir/$url",
385		$target_directory_path,
386		$not_embedded_resources
387		);
388	8	$data = preg_replace(
389	8	'/'.$links_and_styles[0][$index].'.*<template>/Uims',
390	8	"<template><style>$css</style>",
391		$data
392		);
393	4	} elseif ($import) {
394		/**
395		* If content is HTML import
396		*/
397	4	$data = str_replace(
398	4	$links_and_styles[0][$index],
399	4	static::html(
400	4	file_get_contents("$dir/$url"),
401	8	"$dir/$url",
402		$target_directory_path,
403		$vulcanization,
404		$not_embedded_resources
405		),
406		$data
407		);
408		}
409		}
410	8	}
411		/**
412		* @param string $link
413		* @param string $url
414		* @param string $dir
415		*
416		* @return bool
417		*/
418	8	protected static function has_relative_href ($link, &$url, $dir) {
419		$result =
420	8	$link &&
421	8	preg_match('/href\s=\s[\'"](.*)[\'"]/Uims', $link, $url);
422	8	if ($result && static::is_relative_path_and_exists($url[1], $dir)) {
423	8	$url = $url[1];
424	8	return true;
425		}
426	4	return false;
427		}
428		/**
429		* @param string $path
430		* @param string $dir
431		*
432		* @return bool
433		*/
434	10	protected static function is_relative_path_and_exists ($path, $dir) {
435	10	return $dir && !preg_match('#^https?://#i', $path) && file_exists(static::absolute_path($path, $dir));
436		}
437		/**
438		* @param string $path
439		* @param string $dir
440		*
441		* @return string
442		*/
443	10	protected static function absolute_path ($path, $dir) {
444	10	if (strpos($path, '/') === 0) {
445	6	return realpath(getcwd().$path);
446		}
447	10	return realpath("$dir/$path");
448		}
449		}
450

nazar-pc / CleverStyle-Framework

Push — master ( 3c0bb6...7f5b44 )

Assets_processing::css() C

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Long Method

Long Method

Duplication Side-by-Side

Filter issues like