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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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<https://www.gnu.org/licenses/why-not-lgpl.html>.

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administrator/components/com_jchoptimize/lib/vendor/codealfa/minify/index.html vendored Normal file
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<html><body bgcolor="#FFFFFF"></body></html>

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administrator/components/com_jchoptimize/lib/vendor/codealfa/minify/src/Base.php vendored Normal file
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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\Minify;
abstract class Base
{
use \CodeAlfa\RegexTokenizer\Base;
protected function __construct()
{
if (!\defined('CODEALFA_MINIFY_CONFIGURED')) {
\ini_set('pcre.backtrack_limit', '1000000');
\ini_set('pcre.recursion_limit', '1000000');
\ini_set('pcre.jit', '0');
\define('CODEALFA_MINIFY_CONFIGURED', 1);
}
}
/**
* @staticvar bool $tm
*
* @param mixed $regexNum
*
* @psalm-param callable(array<array-key, string>): string $callback
*
* @throws \Exception
*/
protected function _replace(string $regex, string $replacement, string $code, $regexNum, ?callable $callback = null): string
{
static $tm = \false;
if (\false === $tm) {
$this->_debug('', '');
$tm = \true;
}
if (empty($callback)) {
$op_code = \preg_replace($regex, $replacement, $code);
} else {
$op_code = \preg_replace_callback($regex, $callback, $code);
}
$this->_debug($regex, $code, $regexNum);
self::throwExceptionOnPregError();
return $op_code;
}
}

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administrator/components/com_jchoptimize/lib/vendor/codealfa/minify/src/Css.php vendored Normal file
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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\Minify;
class Css extends \CodeAlfa\Minify\Base
{
use \CodeAlfa\RegexTokenizer\Css;
public string $css;
private function __construct(string $css)
{
$this->css = $css;
parent::__construct();
}
/**
* Minify a CSS string.
*/
public static function optimize(string $css): string
{
$obj = new \CodeAlfa\Minify\Css($css);
try {
return $obj->_optimize();
} catch (\Exception $e) {
return $obj->css;
}
}
/**
* Minify a CSS string.
*
* @throws \Exception
*/
private function _optimize(): string
{
$s1 = self::doubleQuoteStringToken();
$s2 = self::singleQuoteStringToken();
$es = $s1.'|'.$s2;
$s = '(?<!\\\\)(?:'.$es.')|[\'"]';
$u = self::cssUrlWithCaptureValueToken();
$e = '(?<!\\\\)(?:'.$es.'|'.$u.')|[\'"(]';
$b = self::blockCommentToken();
// $c = self::LINE_COMMENT();
// Remove all comments
$rx = "#(?>/?[^/\"'(]*+(?:{$e})?)*?\\K(?>{$b}|\$)#s";
$this->css = $this->_replace($rx, '', $this->css, 'css1');
// remove ws around , ; : { } in CSS Declarations and media queries
$rx = "#(?>(?:[{};]|^)[^{}@;]*+{|(?:(?<![,;:{}])\\s++(?![,;:{}]))?[^\\s{};\"'(]*+(?:{$e}|[{};])?)+?\\K".'(?:\\s++(?=[,;:{}])|(?<=[,;:{}])\\s++|\\K$)#s';
$this->css = $this->_replace($rx, '', $this->css, 'css2');
// remove ws around , + > ~ { } in selectors
$rx = "#(?>(?:(?<![,+>~{}])\\s++(?![,+>~{}]))?[^\\s{\"'(]*+(?:{[^{}]++}|{|{$e})?)*?\\K".'(?:\\s++(?=[,+>~{}])|(?<=[,+>~{};])\\s++|$\\K)#s';
$this->css = $this->_replace($rx, '', $this->css, 'css3');
// remove last ; in block
$rx = "#(?>(?:;(?!}))?[^;\"'(]*+(?:{$e})?)*?\\K(?:;(?=})|\$\\K)#s";
$this->css = $this->_replace($rx, '', $this->css, 'css4');
// remove ws inside urls
$rx = "#(?>\\(?[^\"'(]*+(?:{$s})?)*?(?:(?<=\\burl)\\(\\K\\s++|\\G(?(?=[\"'])['\"][^'\"]++['\"]|[^\\s]++)\\K\\s++(?=\\))|\$\\K)#s";
$this->css = $this->_replace($rx, '', $this->css, 'css5');
// minimize hex colors
$rx = "#(?>\\#?[^\\#\"'(]*+(?:{$e})?)*?(?:(?<!=)\\#\\K".'([a-f\\d])\\g{1}([a-f\\d])\\g{2}([a-f\\d])\\g{3}(?=[\\s;}])|$\\K)#is';
$this->css = $this->_replace($rx, '$1$2$3', $this->css, 'css6');
// reduce remaining ws to single space
$rx = "#(?>[^\\s'\"(]*+(?:{$e}|\\s(?!\\s))?)*?\\K(?:\\s\\s++|\$)#s";
$this->css = $this->_replace($rx, ' ', $this->css, 'css7');
return \trim($this->css);
}
}

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administrator/components/com_jchoptimize/lib/vendor/codealfa/minify/src/Html.php vendored Normal file
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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\Minify;
class Html extends \CodeAlfa\Minify\Base
{
use \CodeAlfa\RegexTokenizer\Html;
public string $html = '';
/**
* @psalm-var array{isXhtml: bool, isHtml5: bool, jsMinifier: callable|null, minifyLevel: int, jsonMinifier: callable|null, cssMinifier: callable|null}
*/
protected array $options;
/**
* @psalm-param array{isXhtml?: bool, isHtml5?: bool, jsMinifier?: callable, jsonMinifier?: callable, cssMinifier?: callable, minifyLevel?: int}|null $options
*/
protected function __construct(string $html, $options)
{
$this->html = $html;
$paramOptions = ['isXhtml' => \false, 'isHtml5' => \false, 'minifyLevel' => 0, 'cssMinifier' => null, 'jsMinifier' => null, 'jsonMinifier' => null];
if ($options) {
$paramOptions = \array_merge($paramOptions, $options);
}
$this->options = $paramOptions;
parent::__construct();
}
public static function cleanScript(string $content, string $type): string
{
$s1 = self::doubleQuoteStringToken();
$s2 = self::singleQuoteStringToken();
$b = self::blockCommentToken();
$l = self::lineCommentToken();
$c = self::htmlCommentToken();
if ('css' == $type) {
return \preg_replace("#(?>[<\\]\\-]?[^'\"<\\]\\-/]*+(?>{$s1}|{$s2}|{$b}|{$l}|/)?)*?\\K(?:{$c}|\$)#i", '', $content);
}
return \CodeAlfa\Minify\Js::optimize($content, ['prepareOnly' => \true]);
}
/**
* "Minify" an HTML page.
*
* @psalm-param array{isXhtml?: bool, isHtml5?: bool, jsMinifier?: callable, jsonMinifier?: callable, cssMinifier?: callable, minifyLevel?: int}|null $options
*/
public static function optimize(string $html, $options = null): string
{
$min = new \CodeAlfa\Minify\Html($html, $options);
try {
return $min->_optimize();
} catch (\Exception $e) {
return $min->html;
}
}
/**
* @param string[] $m
*/
protected function _minifyCB(array $m): string
{
if ('' == $m[0]) {
return $m[0];
}
if (\false !== \strpos($m[0], 'var google_conversion')) {
return $m[0];
}
$openTag = isset($m[1]) && '' != $m[1] ? $m[1] : (isset($m[4]) && '' != $m[4] ? $m[4] : '');
$content = isset($m[2]) && '' != $m[2] ? $m[2] : (isset($m[5]) && '' != $m[5] ? $m[5] : '');
$closeTag = isset($m[3]) && '' != $m[3] ? $m[3] : (isset($m[6]) && '' != $m[6] ? $m[6] : '');
if ('' == \trim($content)) {
return $m[0];
}
$type = 1 == \stripos($openTag, 'script') ? \false !== \stripos($openTag, 'json') ? 'json' : 'js' : 'css';
if (\is_callable($this->options[$type.'Minifier'])) {
// minify
/** @psalm-suppress PossiblyNullArgument $content */
$content = $this->_callMinifier($this->options[$type.'Minifier'], $content);
return $this->_needsCdata($content, $type) ? "{$openTag}/*<![CDATA[*/{$content}/*]]>*/{$closeTag}" : "{$openTag}{$content}{$closeTag}";
}
return $m[0];
}
protected function _callMinifier(callable $minifier, string $content): string
{
return (string) \call_user_func($minifier, $content);
}
protected function _needsCdata(string $str, string $type): bool
{
return $this->options['isXhtml'] && 'js' == $type && \preg_match('#(?:[<&]|\\-\\-|\\]\\]>)#', $str);
}
/**
* Minify the markup given in the constructor.
*
* @throws \Exception
*/
private function _optimize(): string
{
$x = self::htmlCommentToken();
$s1 = self::doubleQuoteStringToken();
$s2 = self::singleQuoteStringToken();
$a = self::htmlAttributeWithCaptureValueToken();
// Regex for escape elements
$pr = self::htmlElementToken('pre');
$sc = self::htmlElementToken('script');
$st = self::htmlElementToken('style');
$tx = self::htmlElementToken('textarea');
if ($this->options['minifyLevel'] > 0) {
// Remove comments (not containing IE conditional comments)
$rx = "#(?><?[^<]*+(?>{$pr}|{$sc}|{$st}|{$tx}|<!--\\[(?><?[^<]*+)*?<!\\s*\\[(?>-?[^-]*+)*?--!?>|<!DOCTYPE[^>]++>)?)*?\\K(?:{$x}|\$)#i";
$this->html = $this->_replace($rx, '', $this->html, 'html1');
}
// Reduce runs of whitespace outside all elements to one
$rx = "#(?>[^<]*+(?:{$pr}|{$sc}|{$st}|{$tx}|{$x}|<(?>[^>=]*+(?:=\\s*+(?:{$s1}|{$s2}|['\"])?|(?=>)))*?>)?)*?\\K".'(?:[\\t\\f ]++(?=[\\r\\n]\\s*+<)|(?>\\r?\\n|\\r)\\K\\s++(?=<)|[\\t\\f]++(?=[ ]\\s*+<)|[\\t\\f]\\K\\s*+(?=<)|[ ]\\K\\s*+(?=<)|$)#i';
$this->html = $this->_replace($rx, '', $this->html, 'html2');
// Minify scripts
// invalid scripts
$nsc = "<script\\b(?=(?>\\s*+{$a})*?\\s*+type\\s*+=\\s*+(?![\"']?(?:text|application)/(?:javascript|[^'\"\\s>]*?json)))[^<>]*+>(?><?[^<]*+)*?</\\s*+script\\s*+>";
// invalid styles
$nst = "<style\\b(?=(?>\\s*+{$a})*?\\s*+type\\s*+=\\s*+(?![\"']?(?:text|(?:css|stylesheet))))[^<>]*+>(?><?[^<]*+)*?</\\s*+style\\s*>";
$rx = "#(?><?[^<]*+(?:{$x}|{$nsc}|{$nst})?)*?\\K(?:(<script\\b(?!(?>\\s*+{$a})*?\\s*+type\\s*+=\\s*+(?![\"']?(?:text|application)/(?:javascript|[^'\"\\s>]*?json)))[^<>]*+>)((?><?[^<]*+)*?)(</\\s*+script\\s*+>)|(<style\\b(?!(?>\\s*+{$a})*?\\s*+type\\s*+=\\s*+(?![\"']?text/(?:css|stylesheet)))[^<>]*+>)((?><?[^<]*+)*?)(</\\s*+style\\s*+>)|\$)#i";
$this->html = $this->_replace($rx, '', $this->html, 'html3', [$this, '_minifyCB']);
if ($this->options['minifyLevel'] < 1) {
return \trim($this->html);
}
// Replace line feed with space (legacy)
$rx = "#(?>[^<]*+(?:{$pr}|{$sc}|{$st}|{$tx}|{$x}|<(?>[^>=]*+(?:=\\s*+(?:{$s1}|{$s2}|['\"])?|(?=>)))*?>)?)*?\\K".'(?:[\\r\\n\\t\\f]++(?=<)|$)#i';
$this->html = $this->_replace($rx, ' ', $this->html, 'html4');
// remove ws around block elements preserving space around inline elements
// block/undisplayed elements
$b = 'address|article|aside|audio|body|blockquote|canvas|dd|div|dl|fieldset|figcaption|figure|footer|form|h[1-6]|head|header|hgroup|html|noscript|ol|output|p|pre|section|style|table|title|tfoot|ul|video';
// self closing block/undisplayed elements
$b2 = 'base|meta|link|hr';
// inline elements
$i = 'b|big|i|small|tt|abbr|acronym|cite|code|dfn|em|kbd|strong|samp|var|a|bdo|br|map|object|q|script|span|sub|sup|button|label|select|textarea';
// self closing inline elements
$i2 = 'img|input';
$rx = "#(?>\\s*+(?:{$pr}|{$sc}|{$st}|{$tx}|{$x}|<(?:(?>{$i})\\b[^>]*+>|(?:/(?>{$i})\\b>|(?>{$i2})\\b[^>]*+>)\\s*+)|<[^>]*+>)|[^<]++)*?\\K(?:\\s++(?=<(?>{$b}|{$b2})\\b)|(?:</(?>{$b})\\b>|<(?>{$b2})\\b[^>]*+>)\\K\\s++(?!<(?>{$i}|{$i2})\\b)|\$)#i";
$this->html = $this->_replace($rx, '', $this->html, 'html5');
// Replace runs of whitespace inside elements with single space escaping pre, textarea, scripts and style elements
// elements to escape
$e = 'pre|script|style|textarea';
$rx = "#(?>[^<]*+(?:{$pr}|{$sc}|{$st}|{$tx}|{$x}|<[^>]++>[^<]*+))*?(?:(?:<(?!{$e}|!)[^>]*+>)?(?>\\s?[^\\s<]*+)*?\\K\\s{2,}|\\K\$)#i";
$this->html = $this->_replace($rx, ' ', $this->html, 'html6');
// Remove additional ws around attributes
$rx = "#(?>\\s?(?>[^<>]*+(?:<!(?!DOCTYPE)(?>>?[^>]*+)*?>[^<>]*+)?<|(?=[^<>]++>)[^\\s>'\"]++(?>{$s1}|{$s2})?|[^<]*+))*?\\K".'(?>\\s\\s++|$)#i';
$this->html = $this->_replace($rx, ' ', $this->html, 'html7');
if ($this->options['minifyLevel'] < 2) {
return \trim($this->html);
}
// remove redundant attributes
$rx = "#(?:(?=[^<>]++>)|(?><?[^<]*+(?>{$x}|{$nsc}|{$nst}|<(?!(?:script|style|link)|/html>))?)*?".'<(?:(?:script|style|link)|/html>))(?>[ ]?[^ >]*+)*?\\K(?: (?:type|language)=["\']?(?:(?:text|application)/(?:javascript|css)|javascript)["\']?|[^<]*+\\K$)#i';
$this->html = $this->_replace($rx, '', $this->html, 'html8');
$j = '<input type="hidden" name="[0-9a-f]{32}" value="1" />';
// Remove quotes from selected attributes
if ($this->options['isHtml5']) {
$ns1 = '"[^"\'`=<>\\s]*+(?:[\'`=<>\\s]|(?<=\\\\)")(?>(?:(?<=\\\\)")?[^"]*+)*?(?<!\\\\)"';
$ns2 = "'[^'\"`=<>\\s]*+(?:[\"`=<>\\s]|(?<=\\\\)')(?>(?:(?<=\\\\)')?[^']*+)*?(?<!\\\\)'";
$rx = '#(?:(?=[^>]*+>)|<[a-z0-9]++ )'."(?>[=]?[^=><]*+(?:=(?:{$ns1}|{$ns2})|>(?>[^<]*+(?:{$j}|{$x}|{$nsc}|{$nst}|<(?![a-z0-9]++ ))?)*?(?:<[a-z0-9]++ |\$))?)*?(?:=\\K([\"'])([^\"'`=<>\\s]++)\\g{1}[ ]?|\\K\$)#i";
$this->html = $this->_replace($rx, '$2 ', $this->html, 'html9');
}
// Remove last whitespace in open tag
$rx = "#(?>[^<]*+(?:{$j}|{$x}|{$nsc}|{$nst}|<(?![a-z0-9]++))?)*?(?:<[a-z0-9]++(?>\\s*+[^\\s>]++)*?\\K(?:\\s*+(?=>)|(?<=[\"'])\\s++(?=/>))|\$\\K)#i";
$this->html = $this->_replace($rx, '', $this->html, 'html10');
return \trim($this->html);
}
}

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administrator/components/com_jchoptimize/lib/vendor/codealfa/minify/src/Js.php vendored Normal file
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<?php
/**
* This is a regular expressions based implementation of the JSMin algorithim in PHP as described
* on Douglas Crockford's page at http://www.crockford.com/javascript/jsmin.html and also
* guided by the PHP port written by Ryan Grove <ryan@wonko.com>.
*
* This was written to provide a PHP tool to minify javascript but with an emphasis on speed,
* in particular for tools that want to minify javascript on the fly such as http://www.jch-optimize.net.
* Based on independent comparison tests, this library consistently returns the same results as JSMin.php
* but on an average of 200 times faster.
*
* Permission is hereby granted to use this version of the library under the
* same terms as jsmin.c, which has the following license:
*
* --
* Copyright (c) 2002 Douglas Crockford (www.crockford.com)
*
* 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 shall be used for Good, not Evil.
*
* 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.
* --
*
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright (c) 2002, Douglas Crockford <douglas@crockford.com> (jsmin.c)
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, See LICENSE file
*/
namespace CodeAlfa\Minify;
class Js extends Base
{
use \CodeAlfa\RegexTokenizer\Js;
public string $js;
protected bool $prepareOnly = false;
protected function __construct(string $js, bool $prepareOnly)
{
$this->js = $js;
$this->prepareOnly = $prepareOnly;
parent::__construct();
}
/**
* @psalm-param array{prepareOnly?: bool} $options
*/
public static function optimize(string $js, array $options = []): string
{
$prepareOnly = $options['prepareOnly'] ?? false;
$oMinifyJs = new Js($js, $prepareOnly);
try {
return $oMinifyJs->_optimize();
} catch (\Exception $e) {
return $oMinifyJs->js;
}
}
/**
* @throws \Exception
*/
private function _optimize(): string
{
// regex for double-quoted strings
$s1 = self::doubleQuoteStringToken();
// regex for single quoted string
$s2 = self::singleQuoteStringToken();
// regex for backtick quoted string
$s3 = self::backTickStringToken();
// regex for block comments
$b = self::blockCommentToken();
// regex for line comments
$c = self::lineCommentToken();
// regex for HTML comments in scripts
$h = self::jsHtmlCommentToken();
// We have to do some manipulating with regexp literals; Their pattern is a little 'irregular' but
// they need to be escaped
//
// characters that can precede a regexp literal
$x1 = '[(.<>%,=:[!&|?+\-~*{;\r\n^]';
// keywords that can precede a regex literal
$x2 = '\breturn|\bthrow|\btypeof|\bcase|\bdelete|\bdo|\belse|\bin|\binstanceof|\bnew|\bvoid';
// actual regexp literal
$x3 = '/(?![/*])(?>(?(?=\\\\)\\\\.|\[(?>(?:\\\\.)?[^\]\r\n]*+)+?\])?[^\\\\/\r\n\[]*+)+?/';
// ambiguous characters
$x4 = '[)}]';
// methods and properties
$x5 = 'compile|exec|test|toString|constructor|global|ignoreCase|lastIndex|multiline|source';
// regex for complete regexp literal
$x = "(?>(?=/)(?<={$x1}|{$x2})(?<!\\+\\+|--){$x3}"
."|(?=/)(?<={$x4}){$x3}(?=\\.(?>{$x5})))";
// control characters excluding \r, \
$ws = '\x00-\x09\x0B\x0C\x0E-\x1F\x7F';
// Remove spaces before regexp literals
$rx = "#(?>[{$ws} ]*+(?(?=[^'\"/`]*+(?<=[{$ws} ])/)[^'\"/`{$ws} ]*+(?(?=['\"/`])(?>{$s1}|{$s2}|{$s3}|{$b}|{$c}|{$x}|/)?)"
."|[^'\"/`]*+(?>{$s1}|{$s2}|{$s3}|{$b}|{$c}|{$x}|/)?))*?\\K"
."(?>(?=[{$ws} ]++/)(?:(?<={$x1}|{$x2})(?>[{$ws} ]++({$x3}))|(?<={$x4})(?>[{$ws} ]++({$x3}))(?=\\.(?>{$x5})))|$)#siS";
$this->js = $this->_replace($rx, '$1$2', $this->js, 'js1');
// remove HTML comments
// language=RegExp
$r1 = "(?>[<\\]\\-]?[^'\"`<\\]\\-/]*+(?>{$s1}|{$s2}|{$s3}|{$b}|{$c}|{$x}|/)?)";
$rx = "#{$r1}*?\\K(?>{$h}|$)#si";
$this->js = $this->_replace($rx, '', $this->js, 'js1B');
if (true == $this->prepareOnly) {
return $this->js;
}
// replace line comments with line feed
$rx = "#(?>[^'\"/`]*+(?>{$s1}|{$s2}|{$s3}|{$x}|{$b}|/(?![*/]))?)*?\\K(?>{$c}|$)#si";
$this->js = $this->_replace($rx, "\n", $this->js, 'js2');
// replace block comments with single space
$rx = "#(?>[^'\"/`]*+(?>{$s1}|{$s2}|{$s3}|{$x}|/(?![*/]))?)*?\\K(?>{$b}|$)#si";
$this->js = $this->_replace($rx, ' ', $this->js, 'js3');
// convert carriage returns to line feeds
$rx = "#(?>[^'\"`/\\r]*+(?>{$s1}|{$s2}|{$s3}|{$x}|/)?)*?\\K(?>\\r\\n?|$)#si";
$this->js = $this->_replace($rx, "\n", $this->js, 'js4');
// convert all other control characters to space
$rx = "#(?>[^'\"`/{$ws}]*+(?>{$s1}|{$s2}|{$s3}|{$x}|/)?)*?\\K(?>[{$ws}]++|$)#si";
$this->js = $this->_replace($rx, ' ', $this->js, 'js5');
// replace runs of whitespace with single space or linefeed
$rx = "#(?>[^'\"`/\\n ]*+(?>{$s1}|{$s2}|{$s3}|{$x}|[ \\n](?![ \\n])|/)?)*?\\K(?:[ ]++(?=\\n)|\\n\\K\\s++|[ ]\\K[ ]++|$)#si";
$this->js = $this->_replace($rx, '', $this->js, 'js6');
// if regex literal ends line (without modifiers) insert semicolon
$rx = "#(?>[/]?[^'\"`/]*+(?>{$s1}|{$s2}|{$s3}|{$x}(?!\\n))?)*?(?:{$x}\\K\\n(?![!\\#%&`*./,:;<=>?@\\^|~}\\])\"'])|\\K$)#si";
$this->js = $this->_replace($rx, ';', $this->js, 'js7');
// clean up
// $rx = '#.+\K;$#s';
// $this->_js = $this->_replace($rx, '', $this->_js, '8');
$this->js = substr($this->js, 0, -1);
// regex for removing spaces
// remove space except when a space is preceded and followed by a non-ASCII character or by an ASCII letter or digit,
// or by one of these characters \ $ _ ...ie., all ASCII characters except those listed.
$c = '["\'!\#%&`()*./,:;<=>?@\[\]\^{}|~+\-]';
$sp = "(?<={$c}) | (?={$c})";
// Non-ASCII characters
$na = '[^\x00-\x7F]';
// spaces to keep
$k1 = "(?<=[\$_a-z0-9\\\\]|{$na}) (?=[\$_a-z0-9\\\\]|{$na})|(?<=\\+) (?=\\+)|(?<=-) (?=-)";
// regex for removing linefeeds
// remove linefeeds except if it precedes a non-ASCII character or an ASCII letter or digit or one of these
// characters: ! \ $ _ [ ( { + - and if it follows a non-ASCII character or an ASCII letter or digit or one of these
// characters: \ $ _ ] ) } + - " ' ` ...ie., all ASCII characters except those listed respectively
// (or one of these characters: ) " ' ` followed by a string)
$ln = '(?<=[!\#%&*./,:;<=>?@\^|~{\[(])\n|\n(?=[\#%&*./,:;<=>?@\^|~}\])])|(?<![\)"\'`])\\n(?=[\'"`])';
// line feeds to keep
$k2 = "(?<=[\$_a-z0-9\\\\\\])}+\\-\"'`]|{$na})\\n(?=[!\$_a-z0-9\\\\\\[({+\\-]|{$na})|(?<=[\\)\"'`])\\n(?=[\"'`])";
// remove unnecessary linefeeds and spaces
$rx = "#(?>[^'\"`/\\n ]*+(?>{$s1}|{$s2}|{$s3}|{$x}|/|{$k1}|{$k2})?)*?\\K(?>{$sp}|{$ln}|$)#si";
$this->js = $this->_replace($rx, '', $this->js, 'js9');
$this->js = trim($this->js);
return $this->js;
}
}

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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\Minify;
class Json extends \CodeAlfa\Minify\Base
{
use \CodeAlfa\RegexTokenizer\Js;
public string $json;
protected function __construct(string $json)
{
$this->json = $json;
parent::__construct();
}
public static function optimize(string $json): string
{
$obj = new \CodeAlfa\Minify\Json($json);
try {
return $obj->_optimize();
} catch (\Exception $e) {
return $obj->json;
}
}
/**
* @throws \Exception
*/
private function _optimize(): string
{
// regex for double-quoted strings
$s1 = self::doubleQuoteStringToken();
// regex for single quoted string
$s2 = self::singleQuoteStringToken();
// regex for block comments
$b = self::blockCommentToken();
// regex for line comments
$c = self::lineCommentToken();
// regex for HTML comments
$h = self::jsHtmlCommentToken();
// remove all comments
$rx = "#(?>[^/\"'<]*+(?:{$s1}|{$s2})?)*?\\K(?>{$b}|{$c}|{$h}|\$)#si";
$this->json = $this->_replace($rx, '', $this->json, '1');
// remove whitespaces around :,{}
$rx = "#(?>[^\"'\\s]*+(?:{$s1}|{$s2})?)*?\\K(?>\\s++(?=[:,{}\\[\\]])|(?<=[:,{}\\[\\]])\\s++|\$)#s";
$this->json = $this->_replace($rx, '', $this->json, '2');
return $this->json;
}
}

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<html>
<body style="background: #fff;"></body>
</html>

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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\RegexTokenizer;
use CodeAlfa\RegexTokenizer\Debug\Debug;
use Exception;
trait Base
{
use Debug;
/**
* Regex token for a string inside double quotes.
*/
// language=RegExp
public static function doubleQuoteStringToken(): string
{
return '"'.self::doubleQuoteStringValueToken().'(?:"|(?=$))';
}
/**
* Regex token for the value of a string inside double quotes.
*/
// language=RegExp
public static function doubleQuoteStringValueToken(): string
{
return '(?<=")(?>(?:\\\\.)?[^\\\\"]*+)++';
}
/**
* Regex token for a string enclosed by single quotes.
*/
// language=RegExp
public static function singleQuoteStringToken(): string
{
return "'".self::singleQuoteStringValueToken()."(?:'|(?=\$))";
}
/**
* Regex token for the value of a string inside single quotes.
*/
// language=RegExp
public static function singleQuoteStringValueToken(): string
{
return "(?<=')(?>(?:\\\\.)?[^\\\\']*+)++";
}
/**
* Regex token for a string enclosed by back ticks.
*/
// language=RegExp
public static function backTickStringToken(): string
{
return '`'.self::backTickStringValueToken().'(?:`|(?=$))';
}
/**
* Regex token for the value of a string inside back ticks.
*/
// language=RegExp
public static function backTickStringValueToken(): string
{
return '(?<=`)(?>(?:\\\\.)?[^\\\\`]*+)++';
}
/**
* Regex token for any string, optionally capturing the value in a capture group.
*
* @param bool $shouldCaptureValue Whether value should be captured in a capture group
*/
// language=RegExp
public static function stringWithCaptureValueToken(bool $shouldCaptureValue = \false): string
{
$string = '[\'"`]<<'.self::stringValueToken().'>>[\'"`]';
return self::prepare($string, $shouldCaptureValue);
}
/**
* Regex token for the value of a string regardless of which quotes are used.
*/
// language=RegExp
public static function stringValueToken(): string
{
return '(?:'.self::doubleQuoteStringValueToken().'|'.self::singleQuoteStringValueToken().'|'.self::backTickStringValueToken().')';
}
/**
* Regex token for block or line comments.
*/
// language=RegExp
public static function commentToken(): string
{
return '(?:'.self::blockCommentToken().'|'.self::lineCommentToken().')';
}
/**
* Regex token for block comment.
*/
// language=RegExp
public static function blockCommentToken(): string
{
return '/\\*(?>\\*?[^*]*+)*?\\*/';
}
/**
* Regex token for line comment.
*/
public static function lineCommentToken(): string
{
return '//[^\\r\\n]*+';
}
/**
* Will throw an exception when a PHP preg error is encountered.
*
* @throws \Exception
*/
protected static function throwExceptionOnPregError()
{
$error = \array_flip(\array_filter(\get_defined_constants(\true)['pcre'], function (string $value) {
return '_ERROR' === \substr($value, -6);
}, \ARRAY_FILTER_USE_KEY))[\preg_last_error()];
if (\PREG_NO_ERROR != \preg_last_error()) {
throw new \Exception($error);
}
}
/**
* @param string $regex Regular expression string
* @param bool $shouldCaptureValue Whether value should be captured
*/
// language=RegExp
private static function prepare(string $regex, bool $shouldCaptureValue): string
{
$searchArray = ['<<<', '>>>', '<<', '>>'];
if ($shouldCaptureValue) {
return \str_replace($searchArray, ['(?|', ')', '(', ')'], $regex);
}
return \str_replace($searchArray, ['(?:', ')', '', ''], $regex);
}
}

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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\RegexTokenizer;
trait Css
{
use \CodeAlfa\RegexTokenizer\Base;
/**
* Regex token for a CSS ident.
*/
// language=RegExp
public static function cssIdentToken(): string
{
return '(?:\\\\.|[a-z0-9_-]++\\s++)';
}
/**
* Regex token for a CSS url, optionally capturing the value in a capture group.
*
* @param bool $shouldCaptureValue Whether to capture the value in a capture group
*/
// language=RegExp
public static function cssUrlWithCaptureValueToken(bool $shouldCaptureValue = \false): string
{
$cssUrl = '(?:url\\(|(?<=url)\\()(?:\\s*+[\'"])?<<'.self::cssUrlValueToken().'>>(?:[\'"]\\s*+)?\\)';
return self::prepare($cssUrl, $shouldCaptureValue);
}
/**
* Regex token for a CSS url value.
*/
// language=RegExp
public static function cssUrlValueToken(): string
{
return '(?:'.self::stringValueToken().'|'.self::cssUnquotedUrlValueToken().')';
}
/**
* Regex token for an unquoted CSS url value.
*/
// language=RegExp
public static function cssUnquotedUrlValueToken(): string
{
return '(?<=url\\()(?>\\s*+(?:\\\\.)?[^\\\\()\\s\'"]*+)++';
}
}

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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\RegexTokenizer\Debug;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
/**
* Trait Debug - To use the Debug trait you must add a PSR-3 compliant Logger to the class using this trait.
*/
trait Debug
{
use LoggerAwareTrait;
// DO NOT ENABLE on production sites!!
public $_debug = \false;
public $_limit = 10.0;
public $_printCode = \true;
/**
* @param mixed $regexNum
*/
public function _debug(string $regex, string $code, $regexNum = 0): void
{
if (!$this->_debug) {
return;
}
if (\is_null($this->logger)) {
$this->setLogger(new NullLogger());
}
\assert($this->logger instanceof LoggerInterface);
/** @var float $pstamp */
static $pstamp = 0.0;
if (0.0 === $pstamp) {
$pstamp = \microtime(\true);
return;
}
$nstamp = \microtime(\true);
$time = ($nstamp - $pstamp) * 1000;
if ($time > $this->_limit) {
$context = ['category' => 'Regextokenizer'];
$this->logger->debug('regexNum = '.(string) $regexNum, $context);
$this->logger->debug('time = '.(string) $time, $context);
if ($this->_printCode) {
$this->logger->debug('regex = '.$regex, $context);
$this->logger->debug('code = '.$code, $context);
}
}
$pstamp = $nstamp;
}
}

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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\RegexTokenizer;
trait Html
{
use \CodeAlfa\RegexTokenizer\Base;
/**
* Regex token for a string.
*/
// language=RegExp
public static function htmlCommentToken(): string
{
return '<!--(?>-?[^-]*+)*?--!?>';
// return '(?:(?:<!--|(?<=[\s/^])-->)[^\r\n]*+)';
}
/**
* Regex token for an array of HTML elements.
*
* @param string[] $elements Array of names of HTML elements
*/
// language=RegExp
public static function htmlElementsToken(array $elements): string
{
$result = [];
foreach ($elements as $element) {
$result[] = self::htmlElementToken($element);
}
return '(?:'.\implode('|', $result).')';
}
/**
* Regex token for an HTML element.
*
* @param string $element Name of HTML element
* @param bool $isSelfClosing Whether element is self-closing
*/
// language=RegExp
public static function htmlElementToken(string $element = '', bool $isSelfClosing = \false): string
{
$name = '' != $element ? $element : self::htmlGenericElementToken();
$tag = '<'.$name.'\\b(?:\\s++'.self::parseAttributesStatic().')?\\s*+>';
if (!$isSelfClosing) {
$tag .= '(?><?[^<]*+)*?</'.$name.'\\s*+>';
}
return $tag;
}
/**
* Regex token for any valid HTML element name.
*/
// language=RegExp
public static function htmlGenericElementToken(): string
{
return '[a-z0-9]++';
}
/**
* Regex token for an HTML attribute, optionally capturing the value in a capture group.
*/
// language=RegExp
public static function htmlAttributeWithCaptureValueToken(string $attrName = '', bool $captureValue = \false, bool $captureDelimiter = \false, string $matchedValue = ''): string
{
$name = '' != $attrName ? $attrName : '[^\\s/"\'=<>]++';
$delimiter = $captureDelimiter ? '([\'"]?)' : '[\'"]?';
// If we don't need to match a value then the value of attribute is optional
if ('' == $matchedValue) {
$attribute = $name.'(?:\\s*+=\\s*+(?>'.$delimiter.')<<'.self::htmlAttributeValueToken().'>>[\'"]?)?';
} else {
$attribute = $name.'\\s*+=\\s*+(?>'.$delimiter.')'.$matchedValue.'<<'.self::htmlAttributeValueToken().'>>[\'"]?';
}
return self::prepare($attribute, $captureValue);
}
/**
* Regex token for an HTML attribute value.
*/
// language=RegExp
public static function htmlAttributeValueToken(): string
{
return '(?:'.self::stringValueToken().'|'.self::htmlUnquotedAttributeValueToken().')';
}
/**
* Regex token for an unquoted HTML attribute value.
*/
// language=RegExp
public static function htmlUnquotedAttributeValueToken(): string
{
return '(?<==)[^\\s*+>]++';
}
/**
* Regex token for a self closing HTML element.
*
* @param string $element Name of element
*/
public static function htmlSelfClosingElementToken(string $element = ''): string
{
return self::htmlElementToken($element, \true);
}
/**
* Regex for parsing an HTML attribute.
*/
// language=RegExp
protected static function parseAttributesStatic(): string
{
return '(?>'.self::htmlAttributeWithCaptureValueToken().'\\s*+)*?';
}
}

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<?php
/**
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2020 Samuel Marshall
* @license GNU/GPLv3, or later. See LICENSE file
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
namespace CodeAlfa\RegexTokenizer;
trait Js
{
use \CodeAlfa\RegexTokenizer\Base;
/**
* Regex token for a valid HTML comment in a JavaScript declaration block.
*/
public static function jsHtmlCommentToken(): string
{
return '(?:(?:<!--|(?<=[\\s/^])-->)[^\\r\\n]*+)';
}
}