/**
* Execute the minification rule.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
$elements = (new OptionalElementsRepository())->getElements();
$contents = $context->getContents();
foreach ($elements as $element) {
$contents = $this->removeElement($element, $contents);
}
return $context->setContents($contents);
}
/**
* Minify redundant whitespaces.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
$context->setContents($this->trailingWhitespaces($context->getContents()));
$context->setContents($this->runMinificationRules($context->getContents()));
$context->setContents($this->removeSpacesAroundPlaceholders($context->getContents()));
return $context->setContents($this->maxHtmlLineLength($context->getContents(), $this->maxHtmlLineLength));
}
/**
* Minify javascript prefixes on html event attributes.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
$contents = preg_replace_callback('/' . Constants::$htmlEventNamePrefix . Constants::ATTRIBUTE_NAME_REGEX . ' # Match an on{attribute}
\\s*=\\s* # Match equals sign with optional whitespaces around it
["\']? # Match an optional quote
\\s*javascript: # Match the text "javascript:" which should be removed
/xis', function ($match) {
return str_replace('javascript:', '', $match[0]);
}, $context->getContents());
return $context->setContents($contents);
}
/**
* Replace PHP tags with a temporary placeholder.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process($context)
{
$contents = $context->getContents();
$contents = preg_replace_callback('/<\\?=((?!\\?>).)*\\?>/s', function ($match) use($context) {
return $context->getPlaceholderContainer()->addPlaceholder($match[0]);
}, $contents);
$contents = preg_replace_callback('/<\\?php((?!\\?>).)*(\\?>)?/s', function ($match) use($context) {
return $context->getPlaceholderContainer()->addPlaceholder($match[0]);
}, $contents);
return $context->setContents($contents);
}
public function process()
{
$options = [];
collect(Input::get('options'))->each(function ($option) use(&$options) {
$options[$option['name']] = strtolower($option['enabled']) === 'true';
});
$context = new MinifyContext(new PlaceholderContainer());
$context->setContents(Input::get('html'));
$minify = new Minify();
$response = ['html' => $minify->run($context, $options)->getContents()];
return Response::json($response);
}
/**
* Replace remaining comments.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
return $context->setContents(preg_replace_callback('/
<! # search for the start of a comment
[^>]* # search for everything without a ">"
> # match the end of the comment
/xs', function ($match) {
if (Str::contains(strtolower($match[0]), 'doctype')) {
return $match[0];
}
return '';
}, $context->getContents()));
}
/**
* Execute the minification rule.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
return $context->setContents(preg_replace_callback('/
(\\s*' . Constants::ATTRIBUTE_NAME_REGEX . '\\s*) # Match the attribute name
=\\s* # Match the equal sign with optional whitespaces
(["\']) # Match quotes and capture for backreferencing
\\s* # Strange but possible to have a whitespace in an attribute
\\2 # Backreference to the matched quote
\\s*
/x', function ($match) {
if ($this->isBooleanAttribute($match[1])) {
return Html::isLastAttribute($match[0]) ? $match[1] : $match[1] . ' ';
}
return Html::hasSurroundingAttributes($match[0]) ? ' ' : '';
}, $context->getContents()));
}
/**
* Execute the minification rule.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
return $context->setContents(preg_replace_callback('/
= # start matching by a equal sign
\\s* # its valid to use whitespaces after the equals sign
(["\'])? # match a single or double quote and make it a capturing group for backreferencing
(
(?:(?=\\1)|[^\\\\])* # normal part of "unrolling the loop". Match no quote nor escaped char
(?:\\\\\\1 # match the escaped quote
(?:(?=\\1)|[^\\\\])* # normal part again
)* # special part of "unrolling the loop"
) # use a the "unrolling the loop" technique to be able to skip escaped quotes like ="\\""
\\1? # match the same quote symbol as matched before
/x', function ($match) {
return $this->minifyAttribute($match);
}, $context->getContents()));
}
/**
* Replace critical content with a temporary placeholder.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process($context)
{
$contents = $context->getContents();
$contents = $this->whitespaceBetweenInlineElements($contents, $context->getPlaceholderContainer());
$contents = $this->whitespaceInInlineElements($contents, $context->getPlaceholderContainer());
$contents = $this->replaceElements($contents, $context->getPlaceholderContainer());
return $context->setContents($contents);
}
/**
* Execute the minification rule.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
$booleanAttributes = new HtmlBooleanAttributeRepository();
$booleanAttributes = implode('|', $booleanAttributes->getAttributes()->all());
return $context->setContents(preg_replace_callback('/
\\s # first match a whitespace which is an indication if its an attribute
(' . $booleanAttributes . ') # match and capture a boolean attribute
\\s*
=
\\s*
([\'"])? # optional to use a quote
(\\1|true|false|([\\s>"\'])) # match the boolean attribute name again or true|false
\\2? # match the quote again
/xi', function ($match) {
if (isset($match[4])) {
return ' ' . $match[1];
}
if ($match[3] == 'false') {
return '';
}
return ' ' . $match[1];
}, $context->getContents()));
}
/**
* Minify redundant attributes which are not needed by the browser.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process(MinifyContext $context)
{
Collection::make($this->redundantAttributes)->each(function ($attributes, $element) use(&$context) {
Collection::make($attributes)->each(function ($value, $attribute) use($element, &$context) {
$contents = preg_replace_callback('/
' . $element . ' # Match the given element
((?!\\s*' . $attribute . '\\s*=).)* # Match everything except the given attribute
(
\\s*' . $attribute . '\\s* # Match the attribute
=\\s* # Match the equals sign
(["\']?) # Match the opening quotes
\\s*' . $value . '\\s* # Match the value
\\3? # Match the captured opening quotes again
\\s*
)
/xis', function ($match) {
return $this->removeAttribute($match[0], $match[2]);
}, $context->getContents());
$context->setContents($contents);
});
});
return $context;
}
protected function createMinifyOutput()
{
$measurements = $this->minifyContext->getMeasurement();
$referencePoints = Collection::make($measurements->getReferencePoints());
$totalBytesSavedPercentage = 0;
$lastReferencePoint = null;
$rows = $referencePoints->map(function (ReferencePoint $referencePoint) use(&$lastReferencePoint, &$totalBytesSavedPercentage) {
$bytesSaved = '';
$bytesSavedPercentage = '';
if ($lastReferencePoint != null) {
$bytesSaved = $lastReferencePoint->getKiloBytes() - $referencePoint->getKiloBytes();
$totalBytesSavedPercentage += $bytesSavedPercentage = $this->calculateImprovementPercentage($referencePoint->getKiloBytes(), $lastReferencePoint->getKiloBytes());
$bytesSavedPercentage = round(abs($bytesSavedPercentage), 1) . '%';
}
$lastReferencePoint = $referencePoint;
return [$referencePoint->getName(), round($referencePoint->getKiloBytes(), 1), round($bytesSaved, 1), $bytesSavedPercentage];
});
$rows[] = ['Total', round($referencePoints->last()->getKiloBytes(), 1), abs(round($referencePoints->last()->getKiloBytes() - $referencePoints->first()->getKiloBytes(), 1)), abs(round($totalBytesSavedPercentage, 1)) . '%'];
$this->table(['Minification strategy', 'Size (KB)', 'Saved (KB)', 'Size (%)'], $rows);
}
/**
* Replace blade tags with a temporary placeholder.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process($context)
{
$contents = $this->setEchosPlaceholder($context->getContents(), $context->getPlaceholderContainer());
$contents = $this->setBladeControlStructuresPlaceholder($contents, $context->getPlaceholderContainer());
return $context->setContents($contents);
}
/**
* Replace critical content with a temp placeholder for integrity.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
public function process($context)
{
$context->setContents($this->setCDataPlaceholder($context->getContents(), $context->getPlaceholderContainer()));
return $context->setContents($this->setConditionalCommentsPlaceholder($context->getContents(), $context->getPlaceholderContainer()));
}
/**
* Restore placeholders with their original content.
*
* @param \ArjanSchouten\HtmlMinifier\MinifyContext $context
*
* @return \ArjanSchouten\HtmlMinifier\MinifyContext
*/
protected function restore(MinifyContext $context)
{
$withoutPlaceholders = $context->getPlaceholderContainer()->restorePlaceholders($context->getContents());
return $context->setContents($withoutPlaceholders);
}
