Assets_processing::html() - Code Metrics - Inspection of "New upstream version of html5sortable" - nazar-pc/CleverStyle-Framework - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( bf102e...fafcea )

by Nazar

created 2017-06-24 23:03 UTC

Assets_processing::html() A

↳ Parent: Assets_processing

Complexity

Conditions	2
Paths	1

Size

Total Lines	13
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	9
nc	1
nop	5
dl	0
loc	13
ccs	9
cts	9
cp	1
crap	2
rs	9.4285
c	0
b	0
f	0

<?php
/**
 * @package   CleverStyle Framework
 * @author    Nazar Mokrynskyi <[email protected]>
 * @copyright Copyright (c) 2014-2017, 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, nested files are also copied
 * to target directory and processed if needed.
 */
class Assets_processing {
	/**
	 * 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);
				/**
				 * Process recursively CSS imports, but ignore non embedded resources there
				 */
				/** @noinspection UsageOfSilenceOperatorInspection */
				if ($extension == 'css' && @$match[2]) {
					$content = static::css($content, $absolute_path, $target_directory_path);
				}
				$filename = static::file_put_contents_with_hash($target_directory_path, $extension, $content);
				/** @noinspection UsageOfSilenceOperatorInspection */
				/**
				 * We ignore files with query parameters as well as CSS imports with media queries
				 */
				if (strpos($path, '?') === false && !trim(@$match[3])) {
					$not_embedded_resources[] = str_replace(getcwd(), '', "$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) {
			$filename = static::file_put_contents_with_hash($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) {
		if (!preg_match_all('/<link(.*)>|<style(.*)<\/style>/Uims', $data, $links_and_styles)) {
			return;
		}
		$dir = dirname($file);
		// With reverse order we can add inlined CSS imports directly to the beginning of `<template>` element
		$links_and_styles = array_map(
			function ($item) {
				return array_reverse($item, true);
			},
			$links_and_styles
		);
		foreach ($links_and_styles[1] as $index => $link) {
			/**
			 * For plain styles we do not do anything fancy besides minifying its sources (no rearrangement or anything like that)
			 */
			if (mb_strpos($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', $link);
			/**
			 * TODO: Polymer only supports `custom-style > style`, but no `link`-based counterpart, so we can't provide CSP-compatibility in general,
			 * thus always inlining styles into HTML
			 */
			if ($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
				);
				$data = preg_replace(
					'/'.preg_quote($links_and_styles[0][$index], '/').'(.*)<template>/Uims',
					"$1<template><style>$css</style>",
					$data
				);
				$data = preg_replace(
					'/(<template><style>[^<]+)<\/style><style>/Uim',
					'$1',
					$data
				);
			} elseif ($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) 2014-2017, 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, nested files are also copied
15		* to target directory and processed if needed.
16		*/
17		class Assets_processing {
18		/**
19		* Analyses file for images, fonts and css links and include they content into single resulting css file.
20		*
21		* Supports next file extensions for possible assets:
22		* jpeg, jpe, jpg, gif, png, ttf, ttc, svg, svgz, woff, css
23		*
24		* @param string $data Content of processed file
25		* @param string $file Path to file, that contains specified in previous parameter content
26		* @param string $target_directory_path Target directory for resulting combined files
27		* @param string[] $not_embedded_resources Some resources like images and fonts might not be embedded into resulting CSS because of their size
28		*
29		* @return string $data
30		*/
31	10	public static function css ($data, $file, $target_directory_path = PUBLIC_CACHE, &$not_embedded_resources = []) {
32	10	$dir = dirname($file);
33		/**
34		* Remove comments, tabs and new lines
35		*/
36	10	$data = preg_replace('#(/\.?\*/)\|\t\|\n\|\r#s', ' ', $data);
37		/**
38		* Remove unnecessary spaces
39		*/
40	10	$data = preg_replace('/\s([,;>{}(])\s/', '$1', $data);
41	10	$data = preg_replace('/\s+/', ' ', $data);
42		/**
43		* Return spaces required in media queries
44		*/
45	10	$data = preg_replace('/\s(and\|or)\(/', ' $1 (', $data);
46		/**
47		* Duplicated semicolons
48		*/
49	10	$data = preg_replace('/;+/m', ';', $data);
50		/**
51		* Minify rgb colors declarations
52		*/
53	10	$data = preg_replace_callback(
54	10	'/rgb\(([0-9,.]+)\)/i',
55		function ($rgb) {
56	6	$rgb = explode(',', $rgb[1]);
57		return
58		'#'.
59	6	str_pad(dechex($rgb[0]), 2, 0, STR_PAD_LEFT).
60	6	str_pad(dechex($rgb[1]), 2, 0, STR_PAD_LEFT).
61	6	str_pad(dechex($rgb[2]), 2, 0, STR_PAD_LEFT);
62	10	},
63	10	$data
64		);
65		/**
66		* Minify repeated colors declarations
67		*/
68	10	$data = preg_replace('/#([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3/i', '#$1$2$3', $data);
69		/**
70		* Remove unnecessary zeros
71		*/
72	10	$data = preg_replace('/(\D)0\.(\d+)/i', '$1.$2', $data);
73		/**
74		* Unnecessary spaces around colons (should have whitespace character after, otherwise `.class :disabled` will be handled incorrectly)
75		*/
76	10	$data = preg_replace('/\s*:\s+/', ':', $data);
77		/**
78		* Assets processing
79		*/
80		// TODO: replace by loop, track duplicated stuff that are subject to inlining and if they appear more than once, don't inline them
81	10	$data = preg_replace_callback(
82	10	'/url\((.)\)\|@import\s(?:url\()?\s([\'"].[\'"])\s\)??.;/U',
83		function ($match) use ($dir, $target_directory_path, &$not_embedded_resources) {
84	10	$path_matched = $match[2] ?? $match[1];
85	10	$path = trim($path_matched, '\'" ');
86	10	$link = explode('?', $path, 2)[0];
87	10	if (!static::is_relative_path_and_exists($link, $dir)) {
88	4	return $match[0];
89		}
90	10	$extension = file_extension($link);
91	10	$absolute_path = static::absolute_path($link, $dir);
92	10	$content = file_get_contents($absolute_path);
93		/**
94		* Process recursively CSS imports, but ignore non embedded resources there
95		*/
96		/** @noinspection UsageOfSilenceOperatorInspection */
97	10	if ($extension == 'css' && @$match[2]) {
98	6	$content = static::css($content, $absolute_path, $target_directory_path);
99		}
100	10	$filename = static::file_put_contents_with_hash($target_directory_path, $extension, $content);
101		/** @noinspection UsageOfSilenceOperatorInspection */
102		/**
103		* We ignore files with query parameters as well as CSS imports with media queries
104		*/
105	10	if (strpos($path, '?') === false && !trim(@$match[3])) {
106	6	$not_embedded_resources[] = str_replace(getcwd(), '', "$target_directory_path/$filename");
107		}
108	10	return str_replace($path_matched, "'./$filename'", $match[0]);
109	10	},
110	10	$data
111		);
112	10	return trim($data);
113		}
114		/**
115		* Put `$content` into `$dir` where filename is `md5($content)` with specified extension
116		*
117		* @param string $dir
118		* @param string $extension
119		* @param string $content
120		*
121		* @return string Filename (without full path)
122		*/
123	10	protected static function file_put_contents_with_hash ($dir, $extension, $content) {
124	10	$hash = md5($content);
125	10	file_put_contents("$dir/$hash.$extension", $content, LOCK_EX \| FILE_BINARY);
126	10	return "$hash.$extension";
127		}
128		/**
129		* Simple and fast JS minification
130		*
131		* @param string $data
132		*
133		* @return string
134		*/
135	10	public static function js ($data) {
136		/**
137		* Split into array of lines
138		*/
139	10	$data = explode("\n", $data);
140		/**
141		* Flag that is `true` when inside comment
142		*/
143	10	$in_comment = false;
144	10	$continue_after_position = -1;
145	10	foreach ($data as $index => &$current_line) {
146	10	if ($continue_after_position >= $index) {
147	2	continue;
148		}
149	10	$next_line = isset($data[$index + 1]) ? trim($data[$index + 1]) : '';
150		/**
151		* Remove starting and trailing spaces
152		*/
153	10	$current_line = trim($current_line);
154		/**
155		* Remove single-line comments
156		*/
157	10	if (mb_strpos($current_line, '//') === 0) {
158	10	$current_line = '';
159	10	continue;
160		}
161		/**
162		* Starts with multi-line comment
163		*/
164	10	if (mb_strpos($current_line, '/*') === 0) {
165	10	$in_comment = true;
166		}
167	10	if (!$in_comment) {
168	10	$backticks_position = strpos($current_line, '`');
169		/**
170		* Handling template strings can be tricky (since they might be multi-line), so let's fast-forward to the last backticks position and continue
171		* from there
172		*/
173	10	if ($backticks_position !== false) {
174	6	$last_item_with_backticks = array_keys(
175	6	array_filter(
176	6	$data,
177		function ($d) {
178	6	return strpos($d, '`') !== false;
179	6	}
180		)
181		);
182	6	$last_item_with_backticks = array_pop($last_item_with_backticks);
183	6	if ($last_item_with_backticks > $index) {
184	2	$continue_after_position = $last_item_with_backticks;
185	2	continue;
186		}
187		}
188		/**
189		* Add new line at the end if only needed
190		*/
191	10	if (static::new_line_needed($current_line, $next_line)) {
192	10	$current_line .= "\n";
193		}
194		/**
195		* Single-line comment
196		*/
197	10	$current_line = preg_replace('#^\s*//[^\'"]+$#', '', $current_line);
198		/**
199		* If we are not sure - just add new line afterwards
200		*/
201	10	$current_line = preg_replace('#//.*$#', "\\0\n", $current_line);
202		} else {
203		/**
204		* End of multi-line comment
205		*/
206	10	if (strpos($current_line, '*/') !== false) {
207	10	$current_line = explode('*/', $current_line)[1];
208	10	$in_comment = false;
209		} else {
210	10	$current_line = '';
211		}
212		}
213		}
214	10	$data = implode('', $data);
215	10	$data = str_replace('</script>', '<\/script>', $data);
216	10	return trim($data, ';').';';
217		}
218		/**
219		* @param string $current_line
220		* @param string $next_line
221		*
222		* @return bool
223		*/
224	10	protected static function new_line_needed ($current_line, $next_line) {
225		/**
226		* Set of symbols that are safe to be concatenated without new line with anything else
227		*/
228		$regexp = /** @lang PhpRegExp */
229	10	'[:;,.+\-*/{}?><^\'"\[\]=&(]';
230		return
231	10	$current_line &&
232	10	$next_line &&
233	10	!preg_match("#$regexp\$#", $current_line) &&
234	10	!preg_match("#^$regexp#", $next_line);
235		}
236		/**
237		* Analyses file for scripts and styles, combines them into resulting files in order to optimize loading process
238		* (files with combined scripts and styles will be created)
239		*
240		* @param string $data Content of processed file
241		* @param string $file Path to file, that contains specified in previous parameter content
242		* @param string $target_directory_path Target directory for resulting combined files
243		* @param bool $vulcanization Whether to put combined files separately or to make included assets built-in (vulcanization)
244		* @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
245		*
246		* @return string
247		*/
248	8	public static function html ($data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources = []) {
249	8	static::html_process_links_and_styles($data, $file, $target_directory_path, $vulcanization, $not_embedded_resources);
250	8	static::html_process_scripts($data, $file, $target_directory_path, $vulcanization, $not_embedded_resources);
251		// Removing HTML comments (those that are mostly likely comments, to avoid problems)
252	8	$data = preg_replace_callback(
253	8	'/^\s<!--([^>-].[^-])?-->/Ums',
254		function ($matches) {
255	8	return mb_strpos('--', $matches[1]) === false ? '' : $matches[0];
256	8	},
257	8	$data
258		);
259	8	return preg_replace("/\n+/", "\n", $data);
260		}
261		/**
262		* @param string $data Content of processed file
263		* @param string $file Path to file, that contains specified in previous parameter content
264		* @param string $target_directory_path Target directory for resulting combined files
265		* @param bool $vulcanization Whether to put combined files separately or to make included assets built-in (vulcanization)
266		* @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
267		*/
268	8	protected static function html_process_scripts (&$data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources) {
269	8	if (!preg_match_all('/<script(.*)<\/script>/Uims', $data, $scripts)) {
270	8	return;
271		}
272	8	$scripts_content = '';
273	8	$scripts_to_replace = [];
274	8	$dir = dirname($file);
275	8	foreach ($scripts[1] as $index => $script) {
276	8	$script = explode('>', $script, 2);
277	8	if (preg_match('/src\s=\s[\'"](.*)[\'"]/Uims', $script[0], $url)) {
278	8	$url = $url[1];
279	8	if (!static::is_relative_path_and_exists($url, $dir)) {
280	4	continue;
281		}
282	8	$scripts_to_replace[] = $scripts[0][$index];
283	8	$scripts_content .= file_get_contents("$dir/$url").";\n";
284		} else {
285	8	$scripts_to_replace[] = $scripts[0][$index];
286	8	$scripts_content .= "$script[1];\n";
287		}
288		}
289	8	$scripts_content = static::js($scripts_content);
290	8	if (!$scripts_to_replace) {
291	4	return;
292		}
293		// Remove all scripts
294	8	$data = str_replace($scripts_to_replace, '', $data);
295		/**
296		* If vulcanization is not used - put contents into separate file, and put link to it, otherwise put minified content back
297		*/
298	8	if (!$vulcanization) {
299	2	$filename = static::file_put_contents_with_hash($target_directory_path, 'js', $scripts_content);
300		// Add script with combined content file to the end
301	2	$data .= "<script src=\"./$filename\"></script>";
302	2	$not_embedded_resources[] = str_replace(getcwd(), '', "$target_directory_path/$filename");
303		} else {
304		// Add combined content inline script to the end
305	6	$data .= "<script>$scripts_content</script>";
306		}
307	8	}
308		/**
309		* @param string $data Content of processed file
310		* @param string $file Path to file, that contains specified in previous parameter content
311		* @param string $target_directory_path Target directory for resulting combined files
312		* @param bool $vulcanization Whether to put combined files separately or to make included assets built-in (vulcanization)
313		* @param string[] $not_embedded_resources Resources like images/fonts might not be embedded into resulting CSS because of big size or CSS/JS because of CSP
314		*/
315	8	protected static function html_process_links_and_styles (&$data, $file, $target_directory_path, $vulcanization, &$not_embedded_resources) {
316	8	if (!preg_match_all('/<link(.)>\|<style(.)<\/style>/Uims', $data, $links_and_styles)) {
317	8	return;
318		}
319	8	$dir = dirname($file);
320		// With reverse order we can add inlined CSS imports directly to the beginning of `<template>` element
321	8	$links_and_styles = array_map(
322	8	function ($item) {
323	8	return array_reverse($item, true);
324	8	},
325	8	$links_and_styles
326		);
327	8	foreach ($links_and_styles[1] as $index => $link) {
328		/**
329		* For plain styles we do not do anything fancy besides minifying its sources (no rearrangement or anything like that)
330		*/
331	8	if (mb_strpos($links_and_styles[0][$index], '</style>') > 0) {
332	8	$content = explode('>', $links_and_styles[2][$index], 2)[1];
333	8	$data = str_replace(
334	8	$content,
335	8	static::css($content, $file, $target_directory_path, $not_embedded_resources),
336	8	$data
337		);
338	8	continue;
339		}
340	8	if (!static::has_relative_href($link, $url, $dir)) {
341	4	continue;
342		}
343	8	$import = preg_match('/rel\s=\s[\'"]import[\'"]/Uim', $link);
344		/**
345		* CSS imports are available in Polymer alongside with HTML imports
346		*/
347	8	$css_import = $import && preg_match('/type\s=\s[\'"]css[\'"]/Uim', $link);
348	8	$stylesheet = preg_match('/rel\s=\s[\'"]stylesheet[\'"]/Uim', $link);
349		/**
350		* TODO: Polymer only supports `custom-style > style`, but no `link`-based counterpart, so we can't provide CSP-compatibility in general,
351		* thus always inlining styles into HTML
352		*/
353	8	if ($css_import \|\| $stylesheet) {
354		/**
355		* If content is link to CSS file
356		*/
357	8	$css = static::css(
358	8	file_get_contents("$dir/$url"),
359	8	"$dir/$url",
360	8	$target_directory_path,
361	8	$not_embedded_resources
362		);
363	8	$data = preg_replace(
364	8	'/'.preg_quote($links_and_styles[0][$index], '/').'(.*)<template>/Uims',
365	8	"$1<template><style>$css</style>",
366	8	$data
367		);
368	8	$data = preg_replace(
369	8	'/(<template><style>[^<]+)<\/style><style>/Uim',
370	8	'$1',
371	8	$data
372		);
373	4	} elseif ($import) {
374		/**
375		* If content is HTML import
376		*/
377	4	$data = str_replace(
378	4	$links_and_styles[0][$index],
379	4	static::html(
380	4	file_get_contents("$dir/$url"),
381	4	"$dir/$url",
382	4	$target_directory_path,
383	4	$vulcanization,
384	4	$not_embedded_resources
385		),
386	8	$data
387		);
388		}
389		}
390	8	}
391		/**
392		* @param string $link
393		* @param string $url
394		* @param string $dir
395		*
396		* @return bool
397		*/
398	8	protected static function has_relative_href ($link, &$url, $dir) {
399		$result =
400	8	$link &&
401	8	preg_match('/href\s=\s[\'"](.*)[\'"]/Uims', $link, $url);
402	8	if ($result && static::is_relative_path_and_exists($url[1], $dir)) {
403	8	$url = $url[1];
404	8	return true;
405		}
406	4	return false;
407		}
408		/**
409		* @param string $path
410		* @param string $dir
411		*
412		* @return bool
413		*/
414	10	protected static function is_relative_path_and_exists ($path, $dir) {
415	10	return $dir && !preg_match('#^https?://#i', $path) && file_exists(static::absolute_path($path, $dir));
416		}
417		/**
418		* @param string $path
419		* @param string $dir
420		*
421		* @return string
422		*/
423	10	protected static function absolute_path ($path, $dir) {
424	10	if (strpos($path, '/') === 0) {
425	6	return realpath(getcwd().$path);
426		}
427	10	return realpath("$dir/$path");
428		}
429		}
430

nazar-pc / CleverStyle-Framework

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