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authorFrédéric Guillot <fred@kanboard.net>2019-07-25 11:16:21 -0700
committerFrédéric Guillot <fred@kanboard.net>2019-07-25 11:16:21 -0700
commit9ae185c18eb06e3ce7e2daea0c61e6f6478bdca9 (patch)
treeace22189e031f7f78639f743a872d86c3a65eda0 /libs
parent2bf0f99b519aec5b2068a689a8051d88154e3850 (diff)
Remove dependency on Sass
- Convert *.sass files to vanilla CSS - Start using CSS variables - Add PHP minifier
Diffstat (limited to 'libs')
-rwxr-xr-xlibs/minify/LICENSE18
-rwxr-xr-xlibs/minify/data/js/keywords_after.txt7
-rwxr-xr-xlibs/minify/data/js/keywords_before.txt26
-rwxr-xr-xlibs/minify/data/js/keywords_reserved.txt63
-rwxr-xr-xlibs/minify/data/js/operators.txt46
-rwxr-xr-xlibs/minify/data/js/operators_after.txt43
-rwxr-xr-xlibs/minify/data/js/operators_before.txt43
-rwxr-xr-xlibs/minify/src/CSS.php751
-rwxr-xr-xlibs/minify/src/Exception.php20
-rwxr-xr-xlibs/minify/src/Exceptions/BasicException.php23
-rwxr-xr-xlibs/minify/src/Exceptions/FileImportException.php21
-rwxr-xr-xlibs/minify/src/Exceptions/IOException.php21
-rwxr-xr-xlibs/minify/src/JS.php612
-rwxr-xr-xlibs/minify/src/Minify.php459
-rwxr-xr-xlibs/path-converter/LICENSE18
-rwxr-xr-xlibs/path-converter/src/Converter.php196
-rwxr-xr-xlibs/path-converter/src/ConverterInterface.php24
-rwxr-xr-xlibs/path-converter/src/NoConverter.php23
18 files changed, 2414 insertions, 0 deletions
diff --git a/libs/minify/LICENSE b/libs/minify/LICENSE
new file mode 100755
index 00000000..0c0d08a7
--- /dev/null
+++ b/libs/minify/LICENSE
@@ -0,0 +1,18 @@
+Copyright (c) 2012 Matthias Mullie
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/libs/minify/data/js/keywords_after.txt b/libs/minify/data/js/keywords_after.txt
new file mode 100755
index 00000000..5c8cba7f
--- /dev/null
+++ b/libs/minify/data/js/keywords_after.txt
@@ -0,0 +1,7 @@
+in
+public
+extends
+private
+protected
+implements
+instanceof \ No newline at end of file
diff --git a/libs/minify/data/js/keywords_before.txt b/libs/minify/data/js/keywords_before.txt
new file mode 100755
index 00000000..5abf3579
--- /dev/null
+++ b/libs/minify/data/js/keywords_before.txt
@@ -0,0 +1,26 @@
+do
+in
+let
+new
+var
+case
+else
+enum
+void
+with
+class
+const
+yield
+delete
+export
+import
+public
+static
+typeof
+extends
+package
+private
+function
+protected
+implements
+instanceof \ No newline at end of file
diff --git a/libs/minify/data/js/keywords_reserved.txt b/libs/minify/data/js/keywords_reserved.txt
new file mode 100755
index 00000000..2a3ad3c0
--- /dev/null
+++ b/libs/minify/data/js/keywords_reserved.txt
@@ -0,0 +1,63 @@
+do
+if
+in
+for
+let
+new
+try
+var
+case
+else
+enum
+eval
+null
+this
+true
+void
+with
+break
+catch
+class
+const
+false
+super
+throw
+while
+yield
+delete
+export
+import
+public
+return
+static
+switch
+typeof
+default
+extends
+finally
+package
+private
+continue
+debugger
+function
+arguments
+interface
+protected
+implements
+instanceof
+abstract
+boolean
+byte
+char
+double
+final
+float
+goto
+int
+long
+native
+short
+synchronized
+throws
+transient
+volatile \ No newline at end of file
diff --git a/libs/minify/data/js/operators.txt b/libs/minify/data/js/operators.txt
new file mode 100755
index 00000000..e66229ae
--- /dev/null
+++ b/libs/minify/data/js/operators.txt
@@ -0,0 +1,46 @@
++
+-
+*
+/
+%
+=
++=
+-=
+*=
+/=
+%=
+<<=
+>>=
+>>>=
+&=
+^=
+|=
+&
+|
+^
+~
+<<
+>>
+>>>
+==
+===
+!=
+!==
+>
+<
+>=
+<=
+&&
+||
+!
+.
+[
+]
+?
+:
+,
+;
+(
+)
+{
+} \ No newline at end of file
diff --git a/libs/minify/data/js/operators_after.txt b/libs/minify/data/js/operators_after.txt
new file mode 100755
index 00000000..71a9b709
--- /dev/null
+++ b/libs/minify/data/js/operators_after.txt
@@ -0,0 +1,43 @@
++
+-
+*
+/
+%
+=
++=
+-=
+*=
+/=
+%=
+<<=
+>>=
+>>>=
+&=
+^=
+|=
+&
+|
+^
+<<
+>>
+>>>
+==
+===
+!=
+!==
+>
+<
+>=
+<=
+&&
+||
+.
+[
+]
+?
+:
+,
+;
+(
+)
+} \ No newline at end of file
diff --git a/libs/minify/data/js/operators_before.txt b/libs/minify/data/js/operators_before.txt
new file mode 100755
index 00000000..ff50d870
--- /dev/null
+++ b/libs/minify/data/js/operators_before.txt
@@ -0,0 +1,43 @@
++
+-
+*
+/
+%
+=
++=
+-=
+*=
+/=
+%=
+<<=
+>>=
+>>>=
+&=
+^=
+|=
+&
+|
+^
+~
+<<
+>>
+>>>
+==
+===
+!=
+!==
+>
+<
+>=
+<=
+&&
+||
+!
+.
+[
+?
+:
+,
+;
+(
+{
diff --git a/libs/minify/src/CSS.php b/libs/minify/src/CSS.php
new file mode 100755
index 00000000..e5a46690
--- /dev/null
+++ b/libs/minify/src/CSS.php
@@ -0,0 +1,751 @@
+<?php
+/**
+ * CSS Minifier
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+
+namespace MatthiasMullie\Minify;
+
+use MatthiasMullie\Minify\Exceptions\FileImportException;
+use MatthiasMullie\PathConverter\ConverterInterface;
+use MatthiasMullie\PathConverter\Converter;
+
+/**
+ * CSS minifier
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @package Minify
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @author Tijs Verkoyen <minify@verkoyen.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+class CSS extends Minify
+{
+ /**
+ * @var int maximum inport size in kB
+ */
+ protected $maxImportSize = 5;
+
+ /**
+ * @var string[] valid import extensions
+ */
+ protected $importExtensions = array(
+ 'gif' => 'data:image/gif',
+ 'png' => 'data:image/png',
+ 'jpe' => 'data:image/jpeg',
+ 'jpg' => 'data:image/jpeg',
+ 'jpeg' => 'data:image/jpeg',
+ 'svg' => 'data:image/svg+xml',
+ 'woff' => 'data:application/x-font-woff',
+ 'tif' => 'image/tiff',
+ 'tiff' => 'image/tiff',
+ 'xbm' => 'image/x-xbitmap',
+ );
+
+ /**
+ * Set the maximum size if files to be imported.
+ *
+ * Files larger than this size (in kB) will not be imported into the CSS.
+ * Importing files into the CSS as data-uri will save you some connections,
+ * but we should only import relatively small decorative images so that our
+ * CSS file doesn't get too bulky.
+ *
+ * @param int $size Size in kB
+ */
+ public function setMaxImportSize($size)
+ {
+ $this->maxImportSize = $size;
+ }
+
+ /**
+ * Set the type of extensions to be imported into the CSS (to save network
+ * connections).
+ * Keys of the array should be the file extensions & respective values
+ * should be the data type.
+ *
+ * @param string[] $extensions Array of file extensions
+ */
+ public function setImportExtensions(array $extensions)
+ {
+ $this->importExtensions = $extensions;
+ }
+
+ /**
+ * Move any import statements to the top.
+ *
+ * @param string $content Nearly finished CSS content
+ *
+ * @return string
+ */
+ protected function moveImportsToTop($content)
+ {
+ if (preg_match_all('/(;?)(@import (?<url>url\()?(?P<quotes>["\']?).+?(?P=quotes)(?(url)\)));?/', $content, $matches)) {
+ // remove from content
+ foreach ($matches[0] as $import) {
+ $content = str_replace($import, '', $content);
+ }
+
+ // add to top
+ $content = implode(';', $matches[2]).';'.trim($content, ';');
+ }
+
+ return $content;
+ }
+
+ /**
+ * Combine CSS from import statements.
+ *
+ * @import's will be loaded and their content merged into the original file,
+ * to save HTTP requests.
+ *
+ * @param string $source The file to combine imports for
+ * @param string $content The CSS content to combine imports for
+ * @param string[] $parents Parent paths, for circular reference checks
+ *
+ * @return string
+ *
+ * @throws FileImportException
+ */
+ protected function combineImports($source, $content, $parents)
+ {
+ $importRegexes = array(
+ // @import url(xxx)
+ '/
+ # import statement
+ @import
+
+ # whitespace
+ \s+
+
+ # open url()
+ url\(
+
+ # (optional) open path enclosure
+ (?P<quotes>["\']?)
+
+ # fetch path
+ (?P<path>.+?)
+
+ # (optional) close path enclosure
+ (?P=quotes)
+
+ # close url()
+ \)
+
+ # (optional) trailing whitespace
+ \s*
+
+ # (optional) media statement(s)
+ (?P<media>[^;]*)
+
+ # (optional) trailing whitespace
+ \s*
+
+ # (optional) closing semi-colon
+ ;?
+
+ /ix',
+
+ // @import 'xxx'
+ '/
+
+ # import statement
+ @import
+
+ # whitespace
+ \s+
+
+ # open path enclosure
+ (?P<quotes>["\'])
+
+ # fetch path
+ (?P<path>.+?)
+
+ # close path enclosure
+ (?P=quotes)
+
+ # (optional) trailing whitespace
+ \s*
+
+ # (optional) media statement(s)
+ (?P<media>[^;]*)
+
+ # (optional) trailing whitespace
+ \s*
+
+ # (optional) closing semi-colon
+ ;?
+
+ /ix',
+ );
+
+ // find all relative imports in css
+ $matches = array();
+ foreach ($importRegexes as $importRegex) {
+ if (preg_match_all($importRegex, $content, $regexMatches, PREG_SET_ORDER)) {
+ $matches = array_merge($matches, $regexMatches);
+ }
+ }
+
+ $search = array();
+ $replace = array();
+
+ // loop the matches
+ foreach ($matches as $match) {
+ // get the path for the file that will be imported
+ $importPath = dirname($source).'/'.$match['path'];
+
+ // only replace the import with the content if we can grab the
+ // content of the file
+ if (!$this->canImportByPath($match['path']) || !$this->canImportFile($importPath)) {
+ continue;
+ }
+
+ // check if current file was not imported previously in the same
+ // import chain.
+ if (in_array($importPath, $parents)) {
+ throw new FileImportException('Failed to import file "'.$importPath.'": circular reference detected.');
+ }
+
+ // grab referenced file & minify it (which may include importing
+ // yet other @import statements recursively)
+ $minifier = new static($importPath);
+ $minifier->setMaxImportSize($this->maxImportSize);
+ $minifier->setImportExtensions($this->importExtensions);
+ $importContent = $minifier->execute($source, $parents);
+
+ // check if this is only valid for certain media
+ if (!empty($match['media'])) {
+ $importContent = '@media '.$match['media'].'{'.$importContent.'}';
+ }
+
+ // add to replacement array
+ $search[] = $match[0];
+ $replace[] = $importContent;
+ }
+
+ // replace the import statements
+ return str_replace($search, $replace, $content);
+ }
+
+ /**
+ * Import files into the CSS, base64-ized.
+ *
+ * @url(image.jpg) images will be loaded and their content merged into the
+ * original file, to save HTTP requests.
+ *
+ * @param string $source The file to import files for
+ * @param string $content The CSS content to import files for
+ *
+ * @return string
+ */
+ protected function importFiles($source, $content)
+ {
+ $regex = '/url\((["\']?)(.+?)\\1\)/i';
+ if ($this->importExtensions && preg_match_all($regex, $content, $matches, PREG_SET_ORDER)) {
+ $search = array();
+ $replace = array();
+
+ // loop the matches
+ foreach ($matches as $match) {
+ $extension = substr(strrchr($match[2], '.'), 1);
+ if ($extension && !array_key_exists($extension, $this->importExtensions)) {
+ continue;
+ }
+
+ // get the path for the file that will be imported
+ $path = $match[2];
+ $path = dirname($source).'/'.$path;
+
+ // only replace the import with the content if we're able to get
+ // the content of the file, and it's relatively small
+ if ($this->canImportFile($path) && $this->canImportBySize($path)) {
+ // grab content && base64-ize
+ $importContent = $this->load($path);
+ $importContent = base64_encode($importContent);
+
+ // build replacement
+ $search[] = $match[0];
+ $replace[] = 'url('.$this->importExtensions[$extension].';base64,'.$importContent.')';
+ }
+ }
+
+ // replace the import statements
+ $content = str_replace($search, $replace, $content);
+ }
+
+ return $content;
+ }
+
+ /**
+ * Minify the data.
+ * Perform CSS optimizations.
+ *
+ * @param string[optional] $path Path to write the data to
+ * @param string[] $parents Parent paths, for circular reference checks
+ *
+ * @return string The minified data
+ */
+ public function execute($path = null, $parents = array())
+ {
+ $content = '';
+
+ // loop CSS data (raw data and files)
+ foreach ($this->data as $source => $css) {
+ /*
+ * Let's first take out strings & comments, since we can't just
+ * remove whitespace anywhere. If whitespace occurs inside a string,
+ * we should leave it alone. E.g.:
+ * p { content: "a test" }
+ */
+ $this->extractStrings();
+ $this->stripComments();
+ $this->extractCalcs();
+ $css = $this->replace($css);
+
+ $css = $this->stripWhitespace($css);
+ $css = $this->shortenColors($css);
+ $css = $this->shortenZeroes($css);
+ $css = $this->shortenFontWeights($css);
+ $css = $this->stripEmptyTags($css);
+
+ // restore the string we've extracted earlier
+ $css = $this->restoreExtractedData($css);
+
+ $source = is_int($source) ? '' : $source;
+ $parents = $source ? array_merge($parents, array($source)) : $parents;
+ $css = $this->combineImports($source, $css, $parents);
+ $css = $this->importFiles($source, $css);
+
+ /*
+ * If we'll save to a new path, we'll have to fix the relative paths
+ * to be relative no longer to the source file, but to the new path.
+ * If we don't write to a file, fall back to same path so no
+ * conversion happens (because we still want it to go through most
+ * of the move code, which also addresses url() & @import syntax...)
+ */
+ $converter = $this->getPathConverter($source, $path ?: $source);
+ $css = $this->move($converter, $css);
+
+ // combine css
+ $content .= $css;
+ }
+
+ $content = $this->moveImportsToTop($content);
+
+ return $content;
+ }
+
+ /**
+ * Moving a css file should update all relative urls.
+ * Relative references (e.g. ../images/image.gif) in a certain css file,
+ * will have to be updated when a file is being saved at another location
+ * (e.g. ../../images/image.gif, if the new CSS file is 1 folder deeper).
+ *
+ * @param ConverterInterface $converter Relative path converter
+ * @param string $content The CSS content to update relative urls for
+ *
+ * @return string
+ */
+ protected function move(ConverterInterface $converter, $content)
+ {
+ /*
+ * Relative path references will usually be enclosed by url(). @import
+ * is an exception, where url() is not necessary around the path (but is
+ * allowed).
+ * This *could* be 1 regular expression, where both regular expressions
+ * in this array are on different sides of a |. But we're using named
+ * patterns in both regexes, the same name on both regexes. This is only
+ * possible with a (?J) modifier, but that only works after a fairly
+ * recent PCRE version. That's why I'm doing 2 separate regular
+ * expressions & combining the matches after executing of both.
+ */
+ $relativeRegexes = array(
+ // url(xxx)
+ '/
+ # open url()
+ url\(
+
+ \s*
+
+ # open path enclosure
+ (?P<quotes>["\'])?
+
+ # fetch path
+ (?P<path>.+?)
+
+ # close path enclosure
+ (?(quotes)(?P=quotes))
+
+ \s*
+
+ # close url()
+ \)
+
+ /ix',
+
+ // @import "xxx"
+ '/
+ # import statement
+ @import
+
+ # whitespace
+ \s+
+
+ # we don\'t have to check for @import url(), because the
+ # condition above will already catch these
+
+ # open path enclosure
+ (?P<quotes>["\'])
+
+ # fetch path
+ (?P<path>.+?)
+
+ # close path enclosure
+ (?P=quotes)
+
+ /ix',
+ );
+
+ // find all relative urls in css
+ $matches = array();
+ foreach ($relativeRegexes as $relativeRegex) {
+ if (preg_match_all($relativeRegex, $content, $regexMatches, PREG_SET_ORDER)) {
+ $matches = array_merge($matches, $regexMatches);
+ }
+ }
+
+ $search = array();
+ $replace = array();
+
+ // loop all urls
+ foreach ($matches as $match) {
+ // determine if it's a url() or an @import match
+ $type = (strpos($match[0], '@import') === 0 ? 'import' : 'url');
+
+ $url = $match['path'];
+ if ($this->canImportByPath($url)) {
+ // attempting to interpret GET-params makes no sense, so let's discard them for awhile
+ $params = strrchr($url, '?');
+ $url = $params ? substr($url, 0, -strlen($params)) : $url;
+
+ // fix relative url
+ $url = $converter->convert($url);
+
+ // now that the path has been converted, re-apply GET-params
+ $url .= $params;
+ }
+
+ /*
+ * Urls with control characters above 0x7e should be quoted.
+ * According to Mozilla's parser, whitespace is only allowed at the
+ * end of unquoted urls.
+ * Urls with `)` (as could happen with data: uris) should also be
+ * quoted to avoid being confused for the url() closing parentheses.
+ * And urls with a # have also been reported to cause issues.
+ * Urls with quotes inside should also remain escaped.
+ *
+ * @see https://developer.mozilla.org/nl/docs/Web/CSS/url#The_url()_functional_notation
+ * @see https://hg.mozilla.org/mozilla-central/rev/14abca4e7378
+ * @see https://github.com/matthiasmullie/minify/issues/193
+ */
+ $url = trim($url);
+ if (preg_match('/[\s\)\'"#\x{7f}-\x{9f}]/u', $url)) {
+ $url = $match['quotes'] . $url . $match['quotes'];
+ }
+
+ // build replacement
+ $search[] = $match[0];
+ if ($type === 'url') {
+ $replace[] = 'url('.$url.')';
+ } elseif ($type === 'import') {
+ $replace[] = '@import "'.$url.'"';
+ }
+ }
+
+ // replace urls
+ return str_replace($search, $replace, $content);
+ }
+
+ /**
+ * Shorthand hex color codes.
+ * #FF0000 -> #F00.
+ *
+ * @param string $content The CSS content to shorten the hex color codes for
+ *
+ * @return string
+ */
+ protected function shortenColors($content)
+ {
+ $content = preg_replace('/(?<=[: ])#([0-9a-z])\\1([0-9a-z])\\2([0-9a-z])\\3(?:([0-9a-z])\\4)?(?=[; }])/i', '#$1$2$3$4', $content);
+
+ // remove alpha channel if it's pointless...
+ $content = preg_replace('/(?<=[: ])#([0-9a-z]{6})ff?(?=[; }])/i', '#$1', $content);
+ $content = preg_replace('/(?<=[: ])#([0-9a-z]{3})f?(?=[; }])/i', '#$1', $content);
+
+ $colors = array(
+ // we can shorten some even more by replacing them with their color name
+ '#F0FFFF' => 'azure',
+ '#F5F5DC' => 'beige',
+ '#A52A2A' => 'brown',
+ '#FF7F50' => 'coral',
+ '#FFD700' => 'gold',
+ '#808080' => 'gray',
+ '#008000' => 'green',
+ '#4B0082' => 'indigo',
+ '#FFFFF0' => 'ivory',
+ '#F0E68C' => 'khaki',
+ '#FAF0E6' => 'linen',
+ '#800000' => 'maroon',
+ '#000080' => 'navy',
+ '#808000' => 'olive',
+ '#CD853F' => 'peru',
+ '#FFC0CB' => 'pink',
+ '#DDA0DD' => 'plum',
+ '#800080' => 'purple',
+ '#F00' => 'red',
+ '#FA8072' => 'salmon',
+ '#A0522D' => 'sienna',
+ '#C0C0C0' => 'silver',
+ '#FFFAFA' => 'snow',
+ '#D2B48C' => 'tan',
+ '#FF6347' => 'tomato',
+ '#EE82EE' => 'violet',
+ '#F5DEB3' => 'wheat',
+ // or the other way around
+ 'WHITE' => '#fff',
+ 'BLACK' => '#000',
+ );
+
+ return preg_replace_callback(
+ '/(?<=[: ])('.implode(array_keys($colors), '|').')(?=[; }])/i',
+ function ($match) use ($colors) {
+ return $colors[strtoupper($match[0])];
+ },
+ $content
+ );
+ }
+
+ /**
+ * Shorten CSS font weights.
+ *
+ * @param string $content The CSS content to shorten the font weights for
+ *
+ * @return string
+ */
+ protected function shortenFontWeights($content)
+ {
+ $weights = array(
+ 'normal' => 400,
+ 'bold' => 700,
+ );
+
+ $callback = function ($match) use ($weights) {
+ return $match[1].$weights[$match[2]];
+ };
+
+ return preg_replace_callback('/(font-weight\s*:\s*)('.implode('|', array_keys($weights)).')(?=[;}])/', $callback, $content);
+ }
+
+ /**
+ * Shorthand 0 values to plain 0, instead of e.g. -0em.
+ *
+ * @param string $content The CSS content to shorten the zero values for
+ *
+ * @return string
+ */
+ protected function shortenZeroes($content)
+ {
+ // we don't want to strip units in `calc()` expressions:
+ // `5px - 0px` is valid, but `5px - 0` is not
+ // `10px * 0` is valid (equates to 0), and so is `10 * 0px`, but
+ // `10 * 0` is invalid
+ // we've extracted calcs earlier, so we don't need to worry about this
+
+ // reusable bits of code throughout these regexes:
+ // before & after are used to make sure we don't match lose unintended
+ // 0-like values (e.g. in #000, or in http://url/1.0)
+ // units can be stripped from 0 values, or used to recognize non 0
+ // values (where wa may be able to strip a .0 suffix)
+ $before = '(?<=[:(, ])';
+ $after = '(?=[ ,);}])';
+ $units = '(em|ex|%|px|cm|mm|in|pt|pc|ch|rem|vh|vw|vmin|vmax|vm)';
+
+ // strip units after zeroes (0px -> 0)
+ // NOTE: it should be safe to remove all units for a 0 value, but in
+ // practice, Webkit (especially Safari) seems to stumble over at least
+ // 0%, potentially other units as well. Only stripping 'px' for now.
+ // @see https://github.com/matthiasmullie/minify/issues/60
+ $content = preg_replace('/'.$before.'(-?0*(\.0+)?)(?<=0)px'.$after.'/', '\\1', $content);
+
+ // strip 0-digits (.0 -> 0)
+ $content = preg_replace('/'.$before.'\.0+'.$units.'?'.$after.'/', '0\\1', $content);
+ // strip trailing 0: 50.10 -> 50.1, 50.10px -> 50.1px
+ $content = preg_replace('/'.$before.'(-?[0-9]+\.[0-9]+)0+'.$units.'?'.$after.'/', '\\1\\2', $content);
+ // strip trailing 0: 50.00 -> 50, 50.00px -> 50px
+ $content = preg_replace('/'.$before.'(-?[0-9]+)\.0+'.$units.'?'.$after.'/', '\\1\\2', $content);
+ // strip leading 0: 0.1 -> .1, 01.1 -> 1.1
+ $content = preg_replace('/'.$before.'(-?)0+([0-9]*\.[0-9]+)'.$units.'?'.$after.'/', '\\1\\2\\3', $content);
+
+ // strip negative zeroes (-0 -> 0) & truncate zeroes (00 -> 0)
+ $content = preg_replace('/'.$before.'-?0+'.$units.'?'.$after.'/', '0\\1', $content);
+
+ // IE doesn't seem to understand a unitless flex-basis value (correct -
+ // it goes against the spec), so let's add it in again (make it `%`,
+ // which is only 1 char: 0%, 0px, 0 anything, it's all just the same)
+ // @see https://developer.mozilla.org/nl/docs/Web/CSS/flex
+ $content = preg_replace('/flex:([0-9]+\s[0-9]+\s)0([;\}])/', 'flex:${1}0%${2}', $content);
+ $content = preg_replace('/flex-basis:0([;\}])/', 'flex-basis:0%${1}', $content);
+
+ return $content;
+ }
+
+ /**
+ * Strip empty tags from source code.
+ *
+ * @param string $content
+ *
+ * @return string
+ */
+ protected function stripEmptyTags($content)
+ {
+ $content = preg_replace('/(?<=^)[^\{\};]+\{\s*\}/', '', $content);
+ $content = preg_replace('/(?<=(\}|;))[^\{\};]+\{\s*\}/', '', $content);
+
+ return $content;
+ }
+
+ /**
+ * Strip comments from source code.
+ */
+ protected function stripComments()
+ {
+ // PHP only supports $this inside anonymous functions since 5.4
+ $minifier = $this;
+ $callback = function ($match) use ($minifier) {
+ $count = count($minifier->extracted);
+ $placeholder = '/*'.$count.'*/';
+ $minifier->extracted[$placeholder] = $match[0];
+
+ return $placeholder;
+ };
+ $this->registerPattern('/\n?\/\*(!|.*?@license|.*?@preserve).*?\*\/\n?/s', $callback);
+
+ $this->registerPattern('/\/\*.*?\*\//s', '');
+ }
+
+ /**
+ * Strip whitespace.
+ *
+ * @param string $content The CSS content to strip the whitespace for
+ *
+ * @return string
+ */
+ protected function stripWhitespace($content)
+ {
+ // remove leading & trailing whitespace
+ $content = preg_replace('/^\s*/m', '', $content);
+ $content = preg_replace('/\s*$/m', '', $content);
+
+ // replace newlines with a single space
+ $content = preg_replace('/\s+/', ' ', $content);
+
+ // remove whitespace around meta characters
+ // inspired by stackoverflow.com/questions/15195750/minify-compress-css-with-regex
+ $content = preg_replace('/\s*([\*$~^|]?+=|[{};,>~]|!important\b)\s*/', '$1', $content);
+ $content = preg_replace('/([\[(:>\+])\s+/', '$1', $content);
+ $content = preg_replace('/\s+([\]\)>\+])/', '$1', $content);
+ $content = preg_replace('/\s+(:)(?![^\}]*\{)/', '$1', $content);
+
+ // whitespace around + and - can only be stripped inside some pseudo-
+ // classes, like `:nth-child(3+2n)`
+ // not in things like `calc(3px + 2px)`, shorthands like `3px -2px`, or
+ // selectors like `div.weird- p`
+ $pseudos = array('nth-child', 'nth-last-child', 'nth-last-of-type', 'nth-of-type');
+ $content = preg_replace('/:('.implode('|', $pseudos).')\(\s*([+-]?)\s*(.+?)\s*([+-]?)\s*(.*?)\s*\)/', ':$1($2$3$4$5)', $content);
+
+ // remove semicolon/whitespace followed by closing bracket
+ $content = str_replace(';}', '}', $content);
+
+ return trim($content);
+ }
+
+ /**
+ * Replace all `calc()` occurrences.
+ */
+ protected function extractCalcs()
+ {
+ // PHP only supports $this inside anonymous functions since 5.4
+ $minifier = $this;
+ $callback = function ($match) use ($minifier) {
+ $length = strlen($match[1]);
+ $expr = '';
+ $opened = 0;
+
+ for ($i = 0; $i < $length; $i++) {
+ $char = $match[1][$i];
+ $expr .= $char;
+ if ($char === '(') {
+ $opened++;
+ } elseif ($char === ')' && --$opened === 0) {
+ break;
+ }
+ }
+ $rest = str_replace($expr, '', $match[1]);
+ $expr = trim(substr($expr, 1, -1));
+
+ $count = count($minifier->extracted);
+ $placeholder = 'calc('.$count.')';
+ $minifier->extracted[$placeholder] = 'calc('.$expr.')';
+
+ return $placeholder.$rest;
+ };
+
+ $this->registerPattern('/calc(\(.+?)(?=$|;|calc\()/', $callback);
+ }
+
+ /**
+ * Check if file is small enough to be imported.
+ *
+ * @param string $path The path to the file
+ *
+ * @return bool
+ */
+ protected function canImportBySize($path)
+ {
+ return ($size = @filesize($path)) && $size <= $this->maxImportSize * 1024;
+ }
+
+ /**
+ * Check if file a file can be imported, going by the path.
+ *
+ * @param string $path
+ *
+ * @return bool
+ */
+ protected function canImportByPath($path)
+ {
+ return preg_match('/^(data:|https?:|\\/)/', $path) === 0;
+ }
+
+ /**
+ * Return a converter to update relative paths to be relative to the new
+ * destination.
+ *
+ * @param string $source
+ * @param string $target
+ *
+ * @return ConverterInterface
+ */
+ protected function getPathConverter($source, $target)
+ {
+ return new Converter($source, $target);
+ }
+}
diff --git a/libs/minify/src/Exception.php b/libs/minify/src/Exception.php
new file mode 100755
index 00000000..d03898f0
--- /dev/null
+++ b/libs/minify/src/Exception.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * Base Exception
+ *
+ * @deprecated Use Exceptions\BasicException instead
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ */
+namespace MatthiasMullie\Minify;
+
+/**
+ * Base Exception Class
+ * @deprecated Use Exceptions\BasicException instead
+ *
+ * @package Minify
+ * @author Matthias Mullie <minify@mullie.eu>
+ */
+abstract class Exception extends \Exception
+{
+}
diff --git a/libs/minify/src/Exceptions/BasicException.php b/libs/minify/src/Exceptions/BasicException.php
new file mode 100755
index 00000000..af5e81bc
--- /dev/null
+++ b/libs/minify/src/Exceptions/BasicException.php
@@ -0,0 +1,23 @@
+<?php
+/**
+ * Basic exception
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+namespace MatthiasMullie\Minify\Exceptions;
+
+use MatthiasMullie\Minify\Exception;
+
+/**
+ * Basic Exception Class
+ *
+ * @package Minify\Exception
+ * @author Matthias Mullie <minify@mullie.eu>
+ */
+abstract class BasicException extends Exception
+{
+}
diff --git a/libs/minify/src/Exceptions/FileImportException.php b/libs/minify/src/Exceptions/FileImportException.php
new file mode 100755
index 00000000..912a2c90
--- /dev/null
+++ b/libs/minify/src/Exceptions/FileImportException.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * File Import Exception
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+namespace MatthiasMullie\Minify\Exceptions;
+
+/**
+ * File Import Exception Class
+ *
+ * @package Minify\Exception
+ * @author Matthias Mullie <minify@mullie.eu>
+ */
+class FileImportException extends BasicException
+{
+}
diff --git a/libs/minify/src/Exceptions/IOException.php b/libs/minify/src/Exceptions/IOException.php
new file mode 100755
index 00000000..b172eb48
--- /dev/null
+++ b/libs/minify/src/Exceptions/IOException.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * IO Exception
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+namespace MatthiasMullie\Minify\Exceptions;
+
+/**
+ * IO Exception Class
+ *
+ * @package Minify\Exception
+ * @author Matthias Mullie <minify@mullie.eu>
+ */
+class IOException extends BasicException
+{
+}
diff --git a/libs/minify/src/JS.php b/libs/minify/src/JS.php
new file mode 100755
index 00000000..92389cdd
--- /dev/null
+++ b/libs/minify/src/JS.php
@@ -0,0 +1,612 @@
+<?php
+/**
+ * JavaScript minifier
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+namespace MatthiasMullie\Minify;
+
+/**
+ * JavaScript Minifier Class
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @package Minify
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @author Tijs Verkoyen <minify@verkoyen.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+class JS extends Minify
+{
+ /**
+ * Var-matching regex based on http://stackoverflow.com/a/9337047/802993.
+ *
+ * Note that regular expressions using that bit must have the PCRE_UTF8
+ * pattern modifier (/u) set.
+ *
+ * @var string
+ */
+ const REGEX_VARIABLE = '\b[$A-Z\_a-z\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\x{02c1}\x{02c6}-\x{02d1}\x{02e0}-\x{02e4}\x{02ec}\x{02ee}\x{0370}-\x{0374}\x{0376}\x{0377}\x{037a}-\x{037d}\x{0386}\x{0388}-\x{038a}\x{038c}\x{038e}-\x{03a1}\x{03a3}-\x{03f5}\x{03f7}-\x{0481}\x{048a}-\x{0527}\x{0531}-\x{0556}\x{0559}\x{0561}-\x{0587}\x{05d0}-\x{05ea}\x{05f0}-\x{05f2}\x{0620}-\x{064a}\x{066e}\x{066f}\x{0671}-\x{06d3}\x{06d5}\x{06e5}\x{06e6}\x{06ee}\x{06ef}\x{06fa}-\x{06fc}\x{06ff}\x{0710}\x{0712}-\x{072f}\x{074d}-\x{07a5}\x{07b1}\x{07ca}-\x{07ea}\x{07f4}\x{07f5}\x{07fa}\x{0800}-\x{0815}\x{081a}\x{0824}\x{0828}\x{0840}-\x{0858}\x{08a0}\x{08a2}-\x{08ac}\x{0904}-\x{0939}\x{093d}\x{0950}\x{0958}-\x{0961}\x{0971}-\x{0977}\x{0979}-\x{097f}\x{0985}-\x{098c}\x{098f}\x{0990}\x{0993}-\x{09a8}\x{09aa}-\x{09b0}\x{09b2}\x{09b6}-\x{09b9}\x{09bd}\x{09ce}\x{09dc}\x{09dd}\x{09df}-\x{09e1}\x{09f0}\x{09f1}\x{0a05}-\x{0a0a}\x{0a0f}\x{0a10}\x{0a13}-\x{0a28}\x{0a2a}-\x{0a30}\x{0a32}\x{0a33}\x{0a35}\x{0a36}\x{0a38}\x{0a39}\x{0a59}-\x{0a5c}\x{0a5e}\x{0a72}-\x{0a74}\x{0a85}-\x{0a8d}\x{0a8f}-\x{0a91}\x{0a93}-\x{0aa8}\x{0aaa}-\x{0ab0}\x{0ab2}\x{0ab3}\x{0ab5}-\x{0ab9}\x{0abd}\x{0ad0}\x{0ae0}\x{0ae1}\x{0b05}-\x{0b0c}\x{0b0f}\x{0b10}\x{0b13}-\x{0b28}\x{0b2a}-\x{0b30}\x{0b32}\x{0b33}\x{0b35}-\x{0b39}\x{0b3d}\x{0b5c}\x{0b5d}\x{0b5f}-\x{0b61}\x{0b71}\x{0b83}\x{0b85}-\x{0b8a}\x{0b8e}-\x{0b90}\x{0b92}-\x{0b95}\x{0b99}\x{0b9a}\x{0b9c}\x{0b9e}\x{0b9f}\x{0ba3}\x{0ba4}\x{0ba8}-\x{0baa}\x{0bae}-\x{0bb9}\x{0bd0}\x{0c05}-\x{0c0c}\x{0c0e}-\x{0c10}\x{0c12}-\x{0c28}\x{0c2a}-\x{0c33}\x{0c35}-\x{0c39}\x{0c3d}\x{0c58}\x{0c59}\x{0c60}\x{0c61}\x{0c85}-\x{0c8c}\x{0c8e}-\x{0c90}\x{0c92}-\x{0ca8}\x{0caa}-\x{0cb3}\x{0cb5}-\x{0cb9}\x{0cbd}\x{0cde}\x{0ce0}\x{0ce1}\x{0cf1}\x{0cf2}\x{0d05}-\x{0d0c}\x{0d0e}-\x{0d10}\x{0d12}-\x{0d3a}\x{0d3d}\x{0d4e}\x{0d60}\x{0d61}\x{0d7a}-\x{0d7f}\x{0d85}-\x{0d96}\x{0d9a}-\x{0db1}\x{0db3}-\x{0dbb}\x{0dbd}\x{0dc0}-\x{0dc6}\x{0e01}-\x{0e30}\x{0e32}\x{0e33}\x{0e40}-\x{0e46}\x{0e81}\x{0e82}\x{0e84}\x{0e87}\x{0e88}\x{0e8a}\x{0e8d}\x{0e94}-\x{0e97}\x{0e99}-\x{0e9f}\x{0ea1}-\x{0ea3}\x{0ea5}\x{0ea7}\x{0eaa}\x{0eab}\x{0ead}-\x{0eb0}\x{0eb2}\x{0eb3}\x{0ebd}\x{0ec0}-\x{0ec4}\x{0ec6}\x{0edc}-\x{0edf}\x{0f00}\x{0f40}-\x{0f47}\x{0f49}-\x{0f6c}\x{0f88}-\x{0f8c}\x{1000}-\x{102a}\x{103f}\x{1050}-\x{1055}\x{105a}-\x{105d}\x{1061}\x{1065}\x{1066}\x{106e}-\x{1070}\x{1075}-\x{1081}\x{108e}\x{10a0}-\x{10c5}\x{10c7}\x{10cd}\x{10d0}-\x{10fa}\x{10fc}-\x{1248}\x{124a}-\x{124d}\x{1250}-\x{1256}\x{1258}\x{125a}-\x{125d}\x{1260}-\x{1288}\x{128a}-\x{128d}\x{1290}-\x{12b0}\x{12b2}-\x{12b5}\x{12b8}-\x{12be}\x{12c0}\x{12c2}-\x{12c5}\x{12c8}-\x{12d6}\x{12d8}-\x{1310}\x{1312}-\x{1315}\x{1318}-\x{135a}\x{1380}-\x{138f}\x{13a0}-\x{13f4}\x{1401}-\x{166c}\x{166f}-\x{167f}\x{1681}-\x{169a}\x{16a0}-\x{16ea}\x{16ee}-\x{16f0}\x{1700}-\x{170c}\x{170e}-\x{1711}\x{1720}-\x{1731}\x{1740}-\x{1751}\x{1760}-\x{176c}\x{176e}-\x{1770}\x{1780}-\x{17b3}\x{17d7}\x{17dc}\x{1820}-\x{1877}\x{1880}-\x{18a8}\x{18aa}\x{18b0}-\x{18f5}\x{1900}-\x{191c}\x{1950}-\x{196d}\x{1970}-\x{1974}\x{1980}-\x{19ab}\x{19c1}-\x{19c7}\x{1a00}-\x{1a16}\x{1a20}-\x{1a54}\x{1aa7}\x{1b05}-\x{1b33}\x{1b45}-\x{1b4b}\x{1b83}-\x{1ba0}\x{1bae}\x{1baf}\x{1bba}-\x{1be5}\x{1c00}-\x{1c23}\x{1c4d}-\x{1c4f}\x{1c5a}-\x{1c7d}\x{1ce9}-\x{1cec}\x{1cee}-\x{1cf1}\x{1cf5}\x{1cf6}\x{1d00}-\x{1dbf}\x{1e00}-\x{1f15}\x{1f18}-\x{1f1d}\x{1f20}-\x{1f45}\x{1f48}-\x{1f4d}\x{1f50}-\x{1f57}\x{1f59}\x{1f5b}\x{1f5d}\x{1f5f}-\x{1f7d}\x{1f80}-\x{1fb4}\x{1fb6}-\x{1fbc}\x{1fbe}\x{1fc2}-\x{1fc4}\x{1fc6}-\x{1fcc}\x{1fd0}-\x{1fd3}\x{1fd6}-\x{1fdb}\x{1fe0}-\x{1fec}\x{1ff2}-\x{1ff4}\x{1ff6}-\x{1ffc}\x{2071}\x{207f}\x{2090}-\x{209c}\x{2102}\x{2107}\x{210a}-\x{2113}\x{2115}\x{2119}-\x{211d}\x{2124}\x{2126}\x{2128}\x{212a}-\x{212d}\x{212f}-\x{2139}\x{213c}-\x{213f}\x{2145}-\x{2149}\x{214e}\x{2160}-\x{2188}\x{2c00}-\x{2c2e}\x{2c30}-\x{2c5e}\x{2c60}-\x{2ce4}\x{2ceb}-\x{2cee}\x{2cf2}\x{2cf3}\x{2d00}-\x{2d25}\x{2d27}\x{2d2d}\x{2d30}-\x{2d67}\x{2d6f}\x{2d80}-\x{2d96}\x{2da0}-\x{2da6}\x{2da8}-\x{2dae}\x{2db0}-\x{2db6}\x{2db8}-\x{2dbe}\x{2dc0}-\x{2dc6}\x{2dc8}-\x{2dce}\x{2dd0}-\x{2dd6}\x{2dd8}-\x{2dde}\x{2e2f}\x{3005}-\x{3007}\x{3021}-\x{3029}\x{3031}-\x{3035}\x{3038}-\x{303c}\x{3041}-\x{3096}\x{309d}-\x{309f}\x{30a1}-\x{30fa}\x{30fc}-\x{30ff}\x{3105}-\x{312d}\x{3131}-\x{318e}\x{31a0}-\x{31ba}\x{31f0}-\x{31ff}\x{3400}-\x{4db5}\x{4e00}-\x{9fcc}\x{a000}-\x{a48c}\x{a4d0}-\x{a4fd}\x{a500}-\x{a60c}\x{a610}-\x{a61f}\x{a62a}\x{a62b}\x{a640}-\x{a66e}\x{a67f}-\x{a697}\x{a6a0}-\x{a6ef}\x{a717}-\x{a71f}\x{a722}-\x{a788}\x{a78b}-\x{a78e}\x{a790}-\x{a793}\x{a7a0}-\x{a7aa}\x{a7f8}-\x{a801}\x{a803}-\x{a805}\x{a807}-\x{a80a}\x{a80c}-\x{a822}\x{a840}-\x{a873}\x{a882}-\x{a8b3}\x{a8f2}-\x{a8f7}\x{a8fb}\x{a90a}-\x{a925}\x{a930}-\x{a946}\x{a960}-\x{a97c}\x{a984}-\x{a9b2}\x{a9cf}\x{aa00}-\x{aa28}\x{aa40}-\x{aa42}\x{aa44}-\x{aa4b}\x{aa60}-\x{aa76}\x{aa7a}\x{aa80}-\x{aaaf}\x{aab1}\x{aab5}\x{aab6}\x{aab9}-\x{aabd}\x{aac0}\x{aac2}\x{aadb}-\x{aadd}\x{aae0}-\x{aaea}\x{aaf2}-\x{aaf4}\x{ab01}-\x{ab06}\x{ab09}-\x{ab0e}\x{ab11}-\x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+
+ /**
+ * Full list of JavaScript reserved words.
+ * Will be loaded from /data/js/keywords_reserved.txt.
+ *
+ * @see https://mathiasbynens.be/notes/reserved-keywords
+ *
+ * @var string[]
+ */
+ protected $keywordsReserved = array();
+
+ /**
+ * List of JavaScript reserved words that accept a <variable, value, ...>
+ * after them. Some end of lines are not the end of a statement, like with
+ * these keywords.
+ *
+ * E.g.: we shouldn't insert a ; after this else
+ * else
+ * console.log('this is quite fine')
+ *
+ * Will be loaded from /data/js/keywords_before.txt
+ *
+ * @var string[]
+ */
+ protected $keywordsBefore = array();
+
+ /**
+ * List of JavaScript reserved words that accept a <variable, value, ...>
+ * before them. Some end of lines are not the end of a statement, like when
+ * continued by one of these keywords on the newline.
+ *
+ * E.g.: we shouldn't insert a ; before this instanceof
+ * variable
+ * instanceof String
+ *
+ * Will be loaded from /data/js/keywords_after.txt
+ *
+ * @var string[]
+ */
+ protected $keywordsAfter = array();
+
+ /**
+ * List of all JavaScript operators.
+ *
+ * Will be loaded from /data/js/operators.txt
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
+ *
+ * @var string[]
+ */
+ protected $operators = array();
+
+ /**
+ * List of JavaScript operators that accept a <variable, value, ...> after
+ * them. Some end of lines are not the end of a statement, like with these
+ * operators.
+ *
+ * Note: Most operators are fine, we've only removed ++ and --.
+ * ++ & -- have to be joined with the value they're in-/decrementing.
+ *
+ * Will be loaded from /data/js/operators_before.txt
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
+ *
+ * @var string[]
+ */
+ protected $operatorsBefore = array();
+
+ /**
+ * List of JavaScript operators that accept a <variable, value, ...> before
+ * them. Some end of lines are not the end of a statement, like when
+ * continued by one of these operators on the newline.
+ *
+ * Note: Most operators are fine, we've only removed ), ], ++, --, ! and ~.
+ * There can't be a newline separating ! or ~ and whatever it is negating.
+ * ++ & -- have to be joined with the value they're in-/decrementing.
+ * ) & ] are "special" in that they have lots or usecases. () for example
+ * is used for function calls, for grouping, in if () and for (), ...
+ *
+ * Will be loaded from /data/js/operators_after.txt
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators
+ *
+ * @var string[]
+ */
+ protected $operatorsAfter = array();
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __construct()
+ {
+ call_user_func_array(array('parent', '__construct'), func_get_args());
+
+ $dataDir = __DIR__.'/../data/js/';
+ $options = FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES;
+ $this->keywordsReserved = file($dataDir.'keywords_reserved.txt', $options);
+ $this->keywordsBefore = file($dataDir.'keywords_before.txt', $options);
+ $this->keywordsAfter = file($dataDir.'keywords_after.txt', $options);
+ $this->operators = file($dataDir.'operators.txt', $options);
+ $this->operatorsBefore = file($dataDir.'operators_before.txt', $options);
+ $this->operatorsAfter = file($dataDir.'operators_after.txt', $options);
+ }
+
+ /**
+ * Minify the data.
+ * Perform JS optimizations.
+ *
+ * @param string[optional] $path Path to write the data to
+ *
+ * @return string The minified data
+ */
+ public function execute($path = null)
+ {
+ $content = '';
+
+ /*
+ * Let's first take out strings, comments and regular expressions.
+ * All of these can contain JS code-like characters, and we should make
+ * sure any further magic ignores anything inside of these.
+ *
+ * Consider this example, where we should not strip any whitespace:
+ * var str = "a test";
+ *
+ * Comments will be removed altogether, strings and regular expressions
+ * will be replaced by placeholder text, which we'll restore later.
+ */
+ $this->extractStrings('\'"`');
+ $this->stripComments();
+ $this->extractRegex();
+
+ // loop files
+ foreach ($this->data as $source => $js) {
+ // take out strings, comments & regex (for which we've registered
+ // the regexes just a few lines earlier)
+ $js = $this->replace($js);
+
+ $js = $this->propertyNotation($js);
+ $js = $this->shortenBools($js);
+ $js = $this->stripWhitespace($js);
+
+ // combine js: separating the scripts by a ;
+ $content .= $js.";";
+ }
+
+ // clean up leftover `;`s from the combination of multiple scripts
+ $content = ltrim($content, ';');
+ $content = (string) substr($content, 0, -1);
+
+ /*
+ * Earlier, we extracted strings & regular expressions and replaced them
+ * with placeholder text. This will restore them.
+ */
+ $content = $this->restoreExtractedData($content);
+
+ return $content;
+ }
+
+ /**
+ * Strip comments from source code.
+ */
+ protected function stripComments()
+ {
+ // PHP only supports $this inside anonymous functions since 5.4
+ $minifier = $this;
+ $callback = function ($match) use ($minifier) {
+ $count = count($minifier->extracted);
+ $placeholder = '/*'.$count.'*/';
+ $minifier->extracted[$placeholder] = $match[0];
+
+ return $placeholder;
+ };
+ // multi-line comments
+ $this->registerPattern('/\n?\/\*(!|.*?@license|.*?@preserve).*?\*\/\n?/s', $callback);
+ $this->registerPattern('/\/\*.*?\*\//s', '');
+
+ // single-line comments
+ $this->registerPattern('/\/\/.*$/m', '');
+ }
+
+ /**
+ * JS can have /-delimited regular expressions, like: /ab+c/.match(string).
+ *
+ * The content inside the regex can contain characters that may be confused
+ * for JS code: e.g. it could contain whitespace it needs to match & we
+ * don't want to strip whitespace in there.
+ *
+ * The regex can be pretty simple: we don't have to care about comments,
+ * (which also use slashes) because stripComments() will have stripped those
+ * already.
+ *
+ * This method will replace all string content with simple REGEX#
+ * placeholder text, so we've rid all regular expressions from characters
+ * that may be misinterpreted. Original regex content will be saved in
+ * $this->extracted and after doing all other minifying, we can restore the
+ * original content via restoreRegex()
+ */
+ protected function extractRegex()
+ {
+ // PHP only supports $this inside anonymous functions since 5.4
+ $minifier = $this;
+ $callback = function ($match) use ($minifier) {
+ $count = count($minifier->extracted);
+ $placeholder = '"'.$count.'"';
+ $minifier->extracted[$placeholder] = $match[0];
+
+ return $placeholder;
+ };
+
+ // match all chars except `/` and `\`
+ // `\` is allowed though, along with whatever char follows (which is the
+ // one being escaped)
+ // this should allow all chars, except for an unescaped `/` (= the one
+ // closing the regex)
+ // then also ignore bare `/` inside `[]`, where they don't need to be
+ // escaped: anything inside `[]` can be ignored safely
+ $pattern = '\\/(?!\*)(?:[^\\[\\/\\\\\n\r]++|(?:\\\\.)++|(?:\\[(?:[^\\]\\\\\n\r]++|(?:\\\\.)++)++\\])++)++\\/[gimuy]*';
+
+ // a regular expression can only be followed by a few operators or some
+ // of the RegExp methods (a `\` followed by a variable or value is
+ // likely part of a division, not a regex)
+ $keywords = array('do', 'in', 'new', 'else', 'throw', 'yield', 'delete', 'return', 'typeof');
+ $before = '([=:,;\+\-\*\/\}\(\{\[&\|!]|^|'.implode('|', $keywords).')\s*';
+ $propertiesAndMethods = array(
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Properties_2
+ 'constructor',
+ 'flags',
+ 'global',
+ 'ignoreCase',
+ 'multiline',
+ 'source',
+ 'sticky',
+ 'unicode',
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Methods_2
+ 'compile(',
+ 'exec(',
+ 'test(',
+ 'toSource(',
+ 'toString(',
+ );
+ $delimiters = array_fill(0, count($propertiesAndMethods), '/');
+ $propertiesAndMethods = array_map('preg_quote', $propertiesAndMethods, $delimiters);
+ $after = '(?=\s*([\.,;\)\}&\|+]|\/\/|$|\.('.implode('|', $propertiesAndMethods).')))';
+ $this->registerPattern('/'.$before.'\K'.$pattern.$after.'/', $callback);
+
+ // regular expressions following a `)` are rather annoying to detect...
+ // quite often, `/` after `)` is a division operator & if it happens to
+ // be followed by another one (or a comment), it is likely to be
+ // confused for a regular expression
+ // however, it's perfectly possible for a regex to follow a `)`: after
+ // a single-line `if()`, `while()`, ... statement, for example
+ // since, when they occur like that, they're always the start of a
+ // statement, there's only a limited amount of ways they can be useful:
+ // by calling the regex methods directly
+ // if a regex following `)` is not followed by `.<property or method>`,
+ // it's quite likely not a regex
+ $before = '\)\s*';
+ $after = '(?=\s*\.('.implode('|', $propertiesAndMethods).'))';
+ $this->registerPattern('/'.$before.'\K'.$pattern.$after.'/', $callback);
+
+ // 1 more edge case: a regex can be followed by a lot more operators or
+ // keywords if there's a newline (ASI) in between, where the operator
+ // actually starts a new statement
+ // (https://github.com/matthiasmullie/minify/issues/56)
+ $operators = $this->getOperatorsForRegex($this->operatorsBefore, '/');
+ $operators += $this->getOperatorsForRegex($this->keywordsReserved, '/');
+ $after = '(?=\s*\n\s*('.implode('|', $operators).'))';
+ $this->registerPattern('/'.$pattern.$after.'/', $callback);
+ }
+
+ /**
+ * Strip whitespace.
+ *
+ * We won't strip *all* whitespace, but as much as possible. The thing that
+ * we'll preserve are newlines we're unsure about.
+ * JavaScript doesn't require statements to be terminated with a semicolon.
+ * It will automatically fix missing semicolons with ASI (automatic semi-
+ * colon insertion) at the end of line causing errors (without semicolon.)
+ *
+ * Because it's sometimes hard to tell if a newline is part of a statement
+ * that should be terminated or not, we'll just leave some of them alone.
+ *
+ * @param string $content The content to strip the whitespace for
+ *
+ * @return string
+ */
+ protected function stripWhitespace($content)
+ {
+ // uniform line endings, make them all line feed
+ $content = str_replace(array("\r\n", "\r"), "\n", $content);
+
+ // collapse all non-line feed whitespace into a single space
+ $content = preg_replace('/[^\S\n]+/', ' ', $content);
+
+ // strip leading & trailing whitespace
+ $content = str_replace(array(" \n", "\n "), "\n", $content);
+
+ // collapse consecutive line feeds into just 1
+ $content = preg_replace('/\n+/', "\n", $content);
+
+ $operatorsBefore = $this->getOperatorsForRegex($this->operatorsBefore, '/');
+ $operatorsAfter = $this->getOperatorsForRegex($this->operatorsAfter, '/');
+ $operators = $this->getOperatorsForRegex($this->operators, '/');
+ $keywordsBefore = $this->getKeywordsForRegex($this->keywordsBefore, '/');
+ $keywordsAfter = $this->getKeywordsForRegex($this->keywordsAfter, '/');
+
+ // strip whitespace that ends in (or next line begin with) an operator
+ // that allows statements to be broken up over multiple lines
+ unset($operatorsBefore['+'], $operatorsBefore['-'], $operatorsAfter['+'], $operatorsAfter['-']);
+ $content = preg_replace(
+ array(
+ '/('.implode('|', $operatorsBefore).')\s+/',
+ '/\s+('.implode('|', $operatorsAfter).')/',
+ ),
+ '\\1',
+ $content
+ );
+
+ // make sure + and - can't be mistaken for, or joined into ++ and --
+ $content = preg_replace(
+ array(
+ '/(?<![\+\-])\s*([\+\-])(?![\+\-])/',
+ '/(?<![\+\-])([\+\-])\s*(?![\+\-])/',
+ ),
+ '\\1',
+ $content
+ );
+
+ // collapse whitespace around reserved words into single space
+ $content = preg_replace('/(^|[;\}\s])\K('.implode('|', $keywordsBefore).')\s+/', '\\2 ', $content);
+ $content = preg_replace('/\s+('.implode('|', $keywordsAfter).')(?=([;\{\s]|$))/', ' \\1', $content);
+
+ /*
+ * We didn't strip whitespace after a couple of operators because they
+ * could be used in different contexts and we can't be sure it's ok to
+ * strip the newlines. However, we can safely strip any non-line feed
+ * whitespace that follows them.
+ */
+ $operatorsDiffBefore = array_diff($operators, $operatorsBefore);
+ $operatorsDiffAfter = array_diff($operators, $operatorsAfter);
+ $content = preg_replace('/('.implode('|', $operatorsDiffBefore).')[^\S\n]+/', '\\1', $content);
+ $content = preg_replace('/[^\S\n]+('.implode('|', $operatorsDiffAfter).')/', '\\1', $content);
+
+ /*
+ * Whitespace after `return` can be omitted in a few occasions
+ * (such as when followed by a string or regex)
+ * Same for whitespace in between `)` and `{`, or between `{` and some
+ * keywords.
+ */
+ $content = preg_replace('/\breturn\s+(["\'\/\+\-])/', 'return$1', $content);
+ $content = preg_replace('/\)\s+\{/', '){', $content);
+ $content = preg_replace('/}\n(else|catch|finally)\b/', '}$1', $content);
+
+ /*
+ * Get rid of double semicolons, except where they can be used like:
+ * "for(v=1,_=b;;)", "for(v=1;;v++)" or "for(;;ja||(ja=true))".
+ * I'll safeguard these double semicolons inside for-loops by
+ * temporarily replacing them with an invalid condition: they won't have
+ * a double semicolon and will be easy to spot to restore afterwards.
+ */
+ $content = preg_replace('/\bfor\(([^;]*);;([^;]*)\)/', 'for(\\1;-;\\2)', $content);
+ $content = preg_replace('/;+/', ';', $content);
+ $content = preg_replace('/\bfor\(([^;]*);-;([^;]*)\)/', 'for(\\1;;\\2)', $content);
+
+ /*
+ * Next, we'll be removing all semicolons where ASI kicks in.
+ * for-loops however, can have an empty body (ending in only a
+ * semicolon), like: `for(i=1;i<3;i++);`, of `for(i in list);`
+ * Here, nothing happens during the loop; it's just used to keep
+ * increasing `i`. With that ; omitted, the next line would be expected
+ * to be the for-loop's body... Same goes for while loops.
+ * I'm going to double that semicolon (if any) so after the next line,
+ * which strips semicolons here & there, we're still left with this one.
+ */
+ $content = preg_replace('/(for\([^;\{]*;[^;\{]*;[^;\{]*\));(\}|$)/s', '\\1;;\\2', $content);
+ $content = preg_replace('/(for\([^;\{]+\s+in\s+[^;\{]+\));(\}|$)/s', '\\1;;\\2', $content);
+ /*
+ * Below will also keep `;` after a `do{}while();` along with `while();`
+ * While these could be stripped after do-while, detecting this
+ * distinction is cumbersome, so I'll play it safe and make sure `;`
+ * after any kind of `while` is kept.
+ */
+ $content = preg_replace('/(while\([^;\{]+\));(\}|$)/s', '\\1;;\\2', $content);
+
+ /*
+ * We also can't strip empty else-statements. Even though they're
+ * useless and probably shouldn't be in the code in the first place, we
+ * shouldn't be stripping the `;` that follows it as it breaks the code.
+ * We can just remove those useless else-statements completely.
+ *
+ * @see https://github.com/matthiasmullie/minify/issues/91
+ */
+ $content = preg_replace('/else;/s', '', $content);
+
+ /*
+ * We also don't really want to terminate statements followed by closing
+ * curly braces (which we've ignored completely up until now) or end-of-
+ * script: ASI will kick in here & we're all about minifying.
+ * Semicolons at beginning of the file don't make any sense either.
+ */
+ $content = preg_replace('/;(\}|$)/s', '\\1', $content);
+ $content = ltrim($content, ';');
+
+ // get rid of remaining whitespace af beginning/end
+ return trim($content);
+ }
+
+ /**
+ * We'll strip whitespace around certain operators with regular expressions.
+ * This will prepare the given array by escaping all characters.
+ *
+ * @param string[] $operators
+ * @param string $delimiter
+ *
+ * @return string[]
+ */
+ protected function getOperatorsForRegex(array $operators, $delimiter = '/')
+ {
+ // escape operators for use in regex
+ $delimiters = array_fill(0, count($operators), $delimiter);
+ $escaped = array_map('preg_quote', $operators, $delimiters);
+
+ $operators = array_combine($operators, $escaped);
+
+ // ignore + & - for now, they'll get special treatment
+ unset($operators['+'], $operators['-']);
+
+ // dot can not just immediately follow a number; it can be confused for
+ // decimal point, or calling a method on it, e.g. 42 .toString()
+ $operators['.'] = '(?<![0-9]\s)\.';
+
+ // don't confuse = with other assignment shortcuts (e.g. +=)
+ $chars = preg_quote('+-*\=<>%&|', $delimiter);
+ $operators['='] = '(?<!['.$chars.'])\=';
+
+ return $operators;
+ }
+
+ /**
+ * We'll strip whitespace around certain keywords with regular expressions.
+ * This will prepare the given array by escaping all characters.
+ *
+ * @param string[] $keywords
+ * @param string $delimiter
+ *
+ * @return string[]
+ */
+ protected function getKeywordsForRegex(array $keywords, $delimiter = '/')
+ {
+ // escape keywords for use in regex
+ $delimiter = array_fill(0, count($keywords), $delimiter);
+ $escaped = array_map('preg_quote', $keywords, $delimiter);
+
+ // add word boundaries
+ array_walk($keywords, function ($value) {
+ return '\b'.$value.'\b';
+ });
+
+ $keywords = array_combine($keywords, $escaped);
+
+ return $keywords;
+ }
+
+ /**
+ * Replaces all occurrences of array['key'] by array.key.
+ *
+ * @param string $content
+ *
+ * @return string
+ */
+ protected function propertyNotation($content)
+ {
+ // PHP only supports $this inside anonymous functions since 5.4
+ $minifier = $this;
+ $keywords = $this->keywordsReserved;
+ $callback = function ($match) use ($minifier, $keywords) {
+ $property = trim($minifier->extracted[$match[1]], '\'"');
+
+ /*
+ * Check if the property is a reserved keyword. In this context (as
+ * property of an object literal/array) it shouldn't matter, but IE8
+ * freaks out with "Expected identifier".
+ */
+ if (in_array($property, $keywords)) {
+ return $match[0];
+ }
+
+ /*
+ * See if the property is in a variable-like format (e.g.
+ * array['key-here'] can't be replaced by array.key-here since '-'
+ * is not a valid character there.
+ */
+ if (!preg_match('/^'.$minifier::REGEX_VARIABLE.'$/u', $property)) {
+ return $match[0];
+ }
+
+ return '.'.$property;
+ };
+
+ /*
+ * Figure out if previous character is a variable name (of the array
+ * we want to use property notation on) - this is to make sure
+ * standalone ['value'] arrays aren't confused for keys-of-an-array.
+ * We can (and only have to) check the last character, because PHP's
+ * regex implementation doesn't allow unfixed-length look-behind
+ * assertions.
+ */
+ preg_match('/(\[[^\]]+\])[^\]]*$/', static::REGEX_VARIABLE, $previousChar);
+ $previousChar = $previousChar[1];
+
+ /*
+ * Make sure word preceding the ['value'] is not a keyword, e.g.
+ * return['x']. Because -again- PHP's regex implementation doesn't allow
+ * unfixed-length look-behind assertions, I'm just going to do a lot of
+ * separate look-behind assertions, one for each keyword.
+ */
+ $keywords = $this->getKeywordsForRegex($keywords);
+ $keywords = '(?<!'.implode(')(?<!', $keywords).')';
+
+ return preg_replace_callback('/(?<='.$previousChar.'|\])'.$keywords.'\[\s*(([\'"])[0-9]+\\2)\s*\]/u', $callback, $content);
+ }
+
+ /**
+ * Replaces true & false by !0 and !1.
+ *
+ * @param string $content
+ *
+ * @return string
+ */
+ protected function shortenBools($content)
+ {
+ /*
+ * 'true' or 'false' could be used as property names (which may be
+ * followed by whitespace) - we must not replace those!
+ * Since PHP doesn't allow variable-length (to account for the
+ * whitespace) lookbehind assertions, I need to capture the leading
+ * character and check if it's a `.`
+ */
+ $callback = function ($match) {
+ if (trim($match[1]) === '.') {
+ return $match[0];
+ }
+
+ return $match[1].($match[2] === 'true' ? '!0' : '!1');
+ };
+ $content = preg_replace_callback('/(^|.\s*)\b(true|false)\b(?!:)/', $callback, $content);
+
+ // for(;;) is exactly the same as while(true), but shorter :)
+ $content = preg_replace('/\bwhile\(!0\){/', 'for(;;){', $content);
+
+ // now make sure we didn't turn any do ... while(true) into do ... for(;;)
+ preg_match_all('/\bdo\b/', $content, $dos, PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
+
+ // go backward to make sure positional offsets aren't altered when $content changes
+ $dos = array_reverse($dos);
+ foreach ($dos as $do) {
+ $offsetDo = $do[0][1];
+
+ // find all `while` (now `for`) following `do`: one of those must be
+ // associated with the `do` and be turned back into `while`
+ preg_match_all('/\bfor\(;;\)/', $content, $whiles, PREG_OFFSET_CAPTURE | PREG_SET_ORDER, $offsetDo);
+ foreach ($whiles as $while) {
+ $offsetWhile = $while[0][1];
+
+ $open = substr_count($content, '{', $offsetDo, $offsetWhile - $offsetDo);
+ $close = substr_count($content, '}', $offsetDo, $offsetWhile - $offsetDo);
+ if ($open === $close) {
+ // only restore `while` if amount of `{` and `}` are the same;
+ // otherwise, that `for` isn't associated with this `do`
+ $content = substr_replace($content, 'while(!0)', $offsetWhile, strlen('for(;;)'));
+ break;
+ }
+ }
+ }
+
+ return $content;
+ }
+}
diff --git a/libs/minify/src/Minify.php b/libs/minify/src/Minify.php
new file mode 100755
index 00000000..e5fefe6f
--- /dev/null
+++ b/libs/minify/src/Minify.php
@@ -0,0 +1,459 @@
+<?php
+/**
+ * Abstract minifier class
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+namespace MatthiasMullie\Minify;
+
+use MatthiasMullie\Minify\Exceptions\IOException;
+use Psr\Cache\CacheItemInterface;
+
+/**
+ * Abstract minifier class.
+ *
+ * Please report bugs on https://github.com/matthiasmullie/minify/issues
+ *
+ * @package Minify
+ * @author Matthias Mullie <minify@mullie.eu>
+ * @copyright Copyright (c) 2012, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+abstract class Minify
+{
+ /**
+ * The data to be minified.
+ *
+ * @var string[]
+ */
+ protected $data = array();
+
+ /**
+ * Array of patterns to match.
+ *
+ * @var string[]
+ */
+ protected $patterns = array();
+
+ /**
+ * This array will hold content of strings and regular expressions that have
+ * been extracted from the JS source code, so we can reliably match "code",
+ * without having to worry about potential "code-like" characters inside.
+ *
+ * @var string[]
+ */
+ public $extracted = array();
+
+ /**
+ * Init the minify class - optionally, code may be passed along already.
+ */
+ public function __construct(/* $data = null, ... */)
+ {
+ // it's possible to add the source through the constructor as well ;)
+ if (func_num_args()) {
+ call_user_func_array(array($this, 'add'), func_get_args());
+ }
+ }
+
+ /**
+ * Add a file or straight-up code to be minified.
+ *
+ * @param string|string[] $data
+ *
+ * @return static
+ */
+ public function add($data /* $data = null, ... */)
+ {
+ // bogus "usage" of parameter $data: scrutinizer warns this variable is
+ // not used (we're using func_get_args instead to support overloading),
+ // but it still needs to be defined because it makes no sense to have
+ // this function without argument :)
+ $args = array($data) + func_get_args();
+
+ // this method can be overloaded
+ foreach ($args as $data) {
+ if (is_array($data)) {
+ call_user_func_array(array($this, 'add'), $data);
+ continue;
+ }
+
+ // redefine var
+ $data = (string) $data;
+
+ // load data
+ $value = $this->load($data);
+ $key = ($data != $value) ? $data : count($this->data);
+
+ // replace CR linefeeds etc.
+ // @see https://github.com/matthiasmullie/minify/pull/139
+ $value = str_replace(array("\r\n", "\r"), "\n", $value);
+
+ // store data
+ $this->data[$key] = $value;
+ }
+
+ return $this;
+ }
+
+ /**
+ * Minify the data & (optionally) saves it to a file.
+ *
+ * @param string[optional] $path Path to write the data to
+ *
+ * @return string The minified data
+ */
+ public function minify($path = null)
+ {
+ $content = $this->execute($path);
+
+ // save to path
+ if ($path !== null) {
+ $this->save($content, $path);
+ }
+
+ return $content;
+ }
+
+ /**
+ * Minify & gzip the data & (optionally) saves it to a file.
+ *
+ * @param string[optional] $path Path to write the data to
+ * @param int[optional] $level Compression level, from 0 to 9
+ *
+ * @return string The minified & gzipped data
+ */
+ public function gzip($path = null, $level = 9)
+ {
+ $content = $this->execute($path);
+ $content = gzencode($content, $level, FORCE_GZIP);
+
+ // save to path
+ if ($path !== null) {
+ $this->save($content, $path);
+ }
+
+ return $content;
+ }
+
+ /**
+ * Minify the data & write it to a CacheItemInterface object.
+ *
+ * @param CacheItemInterface $item Cache item to write the data to
+ *
+ * @return CacheItemInterface Cache item with the minifier data
+ */
+ public function cache(CacheItemInterface $item)
+ {
+ $content = $this->execute();
+ $item->set($content);
+
+ return $item;
+ }
+
+ /**
+ * Minify the data.
+ *
+ * @param string[optional] $path Path to write the data to
+ *
+ * @return string The minified data
+ */
+ abstract public function execute($path = null);
+
+ /**
+ * Load data.
+ *
+ * @param string $data Either a path to a file or the content itself
+ *
+ * @return string
+ */
+ protected function load($data)
+ {
+ // check if the data is a file
+ if ($this->canImportFile($data)) {
+ $data = file_get_contents($data);
+
+ // strip BOM, if any
+ if (substr($data, 0, 3) == "\xef\xbb\xbf") {
+ $data = substr($data, 3);
+ }
+ }
+
+ return $data;
+ }
+
+ /**
+ * Save to file.
+ *
+ * @param string $content The minified data
+ * @param string $path The path to save the minified data to
+ *
+ * @throws IOException
+ */
+ protected function save($content, $path)
+ {
+ $handler = $this->openFileForWriting($path);
+
+ $this->writeToFile($handler, $content);
+
+ @fclose($handler);
+ }
+
+ /**
+ * Register a pattern to execute against the source content.
+ *
+ * @param string $pattern PCRE pattern
+ * @param string|callable $replacement Replacement value for matched pattern
+ */
+ protected function registerPattern($pattern, $replacement = '')
+ {
+ // study the pattern, we'll execute it more than once
+ $pattern .= 'S';
+
+ $this->patterns[] = array($pattern, $replacement);
+ }
+
+ /**
+ * We can't "just" run some regular expressions against JavaScript: it's a
+ * complex language. E.g. having an occurrence of // xyz would be a comment,
+ * unless it's used within a string. Of you could have something that looks
+ * like a 'string', but inside a comment.
+ * The only way to accurately replace these pieces is to traverse the JS one
+ * character at a time and try to find whatever starts first.
+ *
+ * @param string $content The content to replace patterns in
+ *
+ * @return string The (manipulated) content
+ */
+ protected function replace($content)
+ {
+ $processed = '';
+ $positions = array_fill(0, count($this->patterns), -1);
+ $matches = array();
+
+ while ($content) {
+ // find first match for all patterns
+ foreach ($this->patterns as $i => $pattern) {
+ list($pattern, $replacement) = $pattern;
+
+ // we can safely ignore patterns for positions we've unset earlier,
+ // because we know these won't show up anymore
+ if (array_key_exists($i, $positions) == false) {
+ continue;
+ }
+
+ // no need to re-run matches that are still in the part of the
+ // content that hasn't been processed
+ if ($positions[$i] >= 0) {
+ continue;
+ }
+
+ $match = null;
+ if (preg_match($pattern, $content, $match, PREG_OFFSET_CAPTURE)) {
+ $matches[$i] = $match;
+
+ // we'll store the match position as well; that way, we
+ // don't have to redo all preg_matches after changing only
+ // the first (we'll still know where those others are)
+ $positions[$i] = $match[0][1];
+ } else {
+ // if the pattern couldn't be matched, there's no point in
+ // executing it again in later runs on this same content;
+ // ignore this one until we reach end of content
+ unset($matches[$i], $positions[$i]);
+ }
+ }
+
+ // no more matches to find: everything's been processed, break out
+ if (!$matches) {
+ $processed .= $content;
+ break;
+ }
+
+ // see which of the patterns actually found the first thing (we'll
+ // only want to execute that one, since we're unsure if what the
+ // other found was not inside what the first found)
+ $discardLength = min($positions);
+ $firstPattern = array_search($discardLength, $positions);
+ $match = $matches[$firstPattern][0][0];
+
+ // execute the pattern that matches earliest in the content string
+ list($pattern, $replacement) = $this->patterns[$firstPattern];
+ $replacement = $this->replacePattern($pattern, $replacement, $content);
+
+ // figure out which part of the string was unmatched; that's the
+ // part we'll execute the patterns on again next
+ $content = (string) substr($content, $discardLength);
+ $unmatched = (string) substr($content, strpos($content, $match) + strlen($match));
+
+ // move the replaced part to $processed and prepare $content to
+ // again match batch of patterns against
+ $processed .= substr($replacement, 0, strlen($replacement) - strlen($unmatched));
+ $content = $unmatched;
+
+ // first match has been replaced & that content is to be left alone,
+ // the next matches will start after this replacement, so we should
+ // fix their offsets
+ foreach ($positions as $i => $position) {
+ $positions[$i] -= $discardLength + strlen($match);
+ }
+ }
+
+ return $processed;
+ }
+
+ /**
+ * This is where a pattern is matched against $content and the matches
+ * are replaced by their respective value.
+ * This function will be called plenty of times, where $content will always
+ * move up 1 character.
+ *
+ * @param string $pattern Pattern to match
+ * @param string|callable $replacement Replacement value
+ * @param string $content Content to match pattern against
+ *
+ * @return string
+ */
+ protected function replacePattern($pattern, $replacement, $content)
+ {
+ if (is_callable($replacement)) {
+ return preg_replace_callback($pattern, $replacement, $content, 1, $count);
+ } else {
+ return preg_replace($pattern, $replacement, $content, 1, $count);
+ }
+ }
+
+ /**
+ * Strings are a pattern we need to match, in order to ignore potential
+ * code-like content inside them, but we just want all of the string
+ * content to remain untouched.
+ *
+ * This method will replace all string content with simple STRING#
+ * placeholder text, so we've rid all strings from characters that may be
+ * misinterpreted. Original string content will be saved in $this->extracted
+ * and after doing all other minifying, we can restore the original content
+ * via restoreStrings().
+ *
+ * @param string[optional] $chars
+ * @param string[optional] $placeholderPrefix
+ */
+ protected function extractStrings($chars = '\'"', $placeholderPrefix = '')
+ {
+ // PHP only supports $this inside anonymous functions since 5.4
+ $minifier = $this;
+ $callback = function ($match) use ($minifier, $placeholderPrefix) {
+ // check the second index here, because the first always contains a quote
+ if ($match[2] === '') {
+ /*
+ * Empty strings need no placeholder; they can't be confused for
+ * anything else anyway.
+ * But we still needed to match them, for the extraction routine
+ * to skip over this particular string.
+ */
+ return $match[0];
+ }
+
+ $count = count($minifier->extracted);
+ $placeholder = $match[1].$placeholderPrefix.$count.$match[1];
+ $minifier->extracted[$placeholder] = $match[1].$match[2].$match[1];
+
+ return $placeholder;
+ };
+
+ /*
+ * The \\ messiness explained:
+ * * Don't count ' or " as end-of-string if it's escaped (has backslash
+ * in front of it)
+ * * Unless... that backslash itself is escaped (another leading slash),
+ * in which case it's no longer escaping the ' or "
+ * * So there can be either no backslash, or an even number
+ * * multiply all of that times 4, to account for the escaping that has
+ * to be done to pass the backslash into the PHP string without it being
+ * considered as escape-char (times 2) and to get it in the regex,
+ * escaped (times 2)
+ */
+ $this->registerPattern('/(['.$chars.'])(.*?(?<!\\\\)(\\\\\\\\)*+)\\1/s', $callback);
+ }
+
+ /**
+ * This method will restore all extracted data (strings, regexes) that were
+ * replaced with placeholder text in extract*(). The original content was
+ * saved in $this->extracted.
+ *
+ * @param string $content
+ *
+ * @return string
+ */
+ protected function restoreExtractedData($content)
+ {
+ if (!$this->extracted) {
+ // nothing was extracted, nothing to restore
+ return $content;
+ }
+
+ $content = strtr($content, $this->extracted);
+
+ $this->extracted = array();
+
+ return $content;
+ }
+
+ /**
+ * Check if the path is a regular file and can be read.
+ *
+ * @param string $path
+ *
+ * @return bool
+ */
+ protected function canImportFile($path)
+ {
+ $parsed = parse_url($path);
+ if (
+ // file is elsewhere
+ isset($parsed['host']) ||
+ // file responds to queries (may change, or need to bypass cache)
+ isset($parsed['query'])
+ ) {
+ return false;
+ }
+
+ return strlen($path) < PHP_MAXPATHLEN && @is_file($path) && is_readable($path);
+ }
+
+ /**
+ * Attempts to open file specified by $path for writing.
+ *
+ * @param string $path The path to the file
+ *
+ * @return resource Specifier for the target file
+ *
+ * @throws IOException
+ */
+ protected function openFileForWriting($path)
+ {
+ if (($handler = @fopen($path, 'w')) === false) {
+ throw new IOException('The file "'.$path.'" could not be opened for writing. Check if PHP has enough permissions.');
+ }
+
+ return $handler;
+ }
+
+ /**
+ * Attempts to write $content to the file specified by $handler. $path is used for printing exceptions.
+ *
+ * @param resource $handler The resource to write to
+ * @param string $content The content to write
+ * @param string $path The path to the file (for exception printing only)
+ *
+ * @throws IOException
+ */
+ protected function writeToFile($handler, $content, $path = '')
+ {
+ if (($result = @fwrite($handler, $content)) === false || ($result < strlen($content))) {
+ throw new IOException('The file "'.$path.'" could not be written to. Check your disk space and file permissions.');
+ }
+ }
+}
diff --git a/libs/path-converter/LICENSE b/libs/path-converter/LICENSE
new file mode 100755
index 00000000..491295ad
--- /dev/null
+++ b/libs/path-converter/LICENSE
@@ -0,0 +1,18 @@
+Copyright (c) 2015 Matthias Mullie
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/libs/path-converter/src/Converter.php b/libs/path-converter/src/Converter.php
new file mode 100755
index 00000000..519d3c84
--- /dev/null
+++ b/libs/path-converter/src/Converter.php
@@ -0,0 +1,196 @@
+<?php
+
+namespace MatthiasMullie\PathConverter;
+
+/**
+ * Convert paths relative from 1 file to another.
+ *
+ * E.g.
+ * ../../images/icon.jpg relative to /css/imports/icons.css
+ * becomes
+ * ../images/icon.jpg relative to /css/minified.css
+ *
+ * Please report bugs on https://github.com/matthiasmullie/path-converter/issues
+ *
+ * @author Matthias Mullie <pathconverter@mullie.eu>
+ * @copyright Copyright (c) 2015, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+class Converter implements ConverterInterface
+{
+ /**
+ * @var string
+ */
+ protected $from;
+
+ /**
+ * @var string
+ */
+ protected $to;
+
+ /**
+ * @param string $from The original base path (directory, not file!)
+ * @param string $to The new base path (directory, not file!)
+ * @param string $root Root directory (defaults to `getcwd`)
+ */
+ public function __construct($from, $to, $root = '')
+ {
+ $shared = $this->shared($from, $to);
+ if ($shared === '') {
+ // when both paths have nothing in common, one of them is probably
+ // absolute while the other is relative
+ $root = $root ?: getcwd();
+ $from = strpos($from, $root) === 0 ? $from : preg_replace('/\/+/', '/', $root.'/'.$from);
+ $to = strpos($to, $root) === 0 ? $to : preg_replace('/\/+/', '/', $root.'/'.$to);
+
+ // or traveling the tree via `..`
+ // attempt to resolve path, or assume it's fine if it doesn't exist
+ $from = @realpath($from) ?: $from;
+ $to = @realpath($to) ?: $to;
+ }
+
+ $from = $this->dirname($from);
+ $to = $this->dirname($to);
+
+ $from = $this->normalize($from);
+ $to = $this->normalize($to);
+
+ $this->from = $from;
+ $this->to = $to;
+ }
+
+ /**
+ * Normalize path.
+ *
+ * @param string $path
+ *
+ * @return string
+ */
+ protected function normalize($path)
+ {
+ // deal with different operating systems' directory structure
+ $path = rtrim(str_replace(DIRECTORY_SEPARATOR, '/', $path), '/');
+
+ /*
+ * Example:
+ * /home/forkcms/frontend/cache/compiled_templates/../../core/layout/css/../images/img.gif
+ * to
+ * /home/forkcms/frontend/core/layout/images/img.gif
+ */
+ do {
+ $path = preg_replace('/[^\/]+(?<!\.\.)\/\.\.\//', '', $path, -1, $count);
+ } while ($count);
+
+ return $path;
+ }
+
+ /**
+ * Figure out the shared path of 2 locations.
+ *
+ * Example:
+ * /home/forkcms/frontend/core/layout/images/img.gif
+ * and
+ * /home/forkcms/frontend/cache/minified_css
+ * share
+ * /home/forkcms/frontend
+ *
+ * @param string $path1
+ * @param string $path2
+ *
+ * @return string
+ */
+ protected function shared($path1, $path2)
+ {
+ // $path could theoretically be empty (e.g. no path is given), in which
+ // case it shouldn't expand to array(''), which would compare to one's
+ // root /
+ $path1 = $path1 ? explode('/', $path1) : array();
+ $path2 = $path2 ? explode('/', $path2) : array();
+
+ $shared = array();
+
+ // compare paths & strip identical ancestors
+ foreach ($path1 as $i => $chunk) {
+ if (isset($path2[$i]) && $path1[$i] == $path2[$i]) {
+ $shared[] = $chunk;
+ } else {
+ break;
+ }
+ }
+
+ return implode('/', $shared);
+ }
+
+ /**
+ * Convert paths relative from 1 file to another.
+ *
+ * E.g.
+ * ../images/img.gif relative to /home/forkcms/frontend/core/layout/css
+ * should become:
+ * ../../core/layout/images/img.gif relative to
+ * /home/forkcms/frontend/cache/minified_css
+ *
+ * @param string $path The relative path that needs to be converted
+ *
+ * @return string The new relative path
+ */
+ public function convert($path)
+ {
+ // quit early if conversion makes no sense
+ if ($this->from === $this->to) {
+ return $path;
+ }
+
+ $path = $this->normalize($path);
+ // if we're not dealing with a relative path, just return absolute
+ if (strpos($path, '/') === 0) {
+ return $path;
+ }
+
+ // normalize paths
+ $path = $this->normalize($this->from.'/'.$path);
+
+ // strip shared ancestor paths
+ $shared = $this->shared($path, $this->to);
+ $path = mb_substr($path, mb_strlen($shared));
+ $to = mb_substr($this->to, mb_strlen($shared));
+
+ // add .. for every directory that needs to be traversed to new path
+ $to = str_repeat('../', count(array_filter(explode('/', $to))));
+
+ return $to.ltrim($path, '/');
+ }
+
+ /**
+ * Attempt to get the directory name from a path.
+ *
+ * @param string $path
+ *
+ * @return string
+ */
+ protected function dirname($path)
+ {
+ if (@is_file($path)) {
+ return dirname($path);
+ }
+
+ if (@is_dir($path)) {
+ return rtrim($path, '/');
+ }
+
+ // no known file/dir, start making assumptions
+
+ // ends in / = dir
+ if (mb_substr($path, -1) === '/') {
+ return rtrim($path, '/');
+ }
+
+ // has a dot in the name, likely a file
+ if (preg_match('/.*\..*$/', basename($path)) !== 0) {
+ return dirname($path);
+ }
+
+ // you're on your own here!
+ return $path;
+ }
+}
diff --git a/libs/path-converter/src/ConverterInterface.php b/libs/path-converter/src/ConverterInterface.php
new file mode 100755
index 00000000..dc1b7657
--- /dev/null
+++ b/libs/path-converter/src/ConverterInterface.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace MatthiasMullie\PathConverter;
+
+/**
+ * Convert file paths.
+ *
+ * Please report bugs on https://github.com/matthiasmullie/path-converter/issues
+ *
+ * @author Matthias Mullie <pathconverter@mullie.eu>
+ * @copyright Copyright (c) 2015, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+interface ConverterInterface
+{
+ /**
+ * Convert file paths.
+ *
+ * @param string $path The path to be converted
+ *
+ * @return string The new path
+ */
+ public function convert($path);
+}
diff --git a/libs/path-converter/src/NoConverter.php b/libs/path-converter/src/NoConverter.php
new file mode 100755
index 00000000..2fcfd0f2
--- /dev/null
+++ b/libs/path-converter/src/NoConverter.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace MatthiasMullie\PathConverter;
+
+/**
+ * Don't convert paths.
+ *
+ * Please report bugs on https://github.com/matthiasmullie/path-converter/issues
+ *
+ * @author Matthias Mullie <pathconverter@mullie.eu>
+ * @copyright Copyright (c) 2015, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+class NoConverter implements ConverterInterface
+{
+ /**
+ * {@inheritdoc}
+ */
+ public function convert($path)
+ {
+ return $path;
+ }
+}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-25 16:09:19 +0000