worldace/document.php

## document.php
<?php
//document.php 2020/11/06 https://qiita.com/economist/items/aefccb2f073ed9429607


class document extends \DOMDocument{ // https://www.php.net/manual/ja/class.domdocument.php

    function __construct($str = '<!DOCTYPE html><html lang="ja"><head><meta charset="utf-8"><title></title></head><body></body></html>'){
        parent::__construct();
        $this->registerNodeClass('\DOMElement','HTMLElement');
        $this->registerNodeClass('\DOMDocumentFragment','HTMLFragment');
        libxml_use_internal_errors(true);

        $pos = strpos($str, '<');

        if($pos >= 0 and $str[$pos+1] === '!'){
            $this->contentsType = 'html';
            $this->loadHTML(substr($str, $pos), LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED | LIBXML_NONET | LIBXML_COMPACT);
        }
        else if($pos >= 0 and $str[$pos+1] === '?'){
            $this->contentsType = 'xml';
            $this->loadXML(substr($str, $pos), LIBXML_NONET | LIBXML_COMPACT); // https://www.php.net/manual/ja/libxml.constants.php
        }
        else{
            $this->contentsType = 'fragment';
            $this->loadHTML('<?xml encoding="utf-8">'.$str, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED | LIBXML_NONET | LIBXML_COMPACT);
        }
    }


    function __get($name){
        if(in_array($name, ['html','head','body','title'], true)){
            return $this->getElementsByTagName($name)[0];
        }
        else{
            return $this->getElementById($name);
        }
    }


    function __invoke($selector, $text = null, $attr = []){
        if($selector instanceof self){
            return $this->importNode($selector->documentElement, true);
        }
        else if($selector instanceof \DOMNode){
            return $this->importNode($selector, true);
        }
        else if(preg_match('/</', $selector)){
            if(preg_match('/^<([\w\-]+)>$/', $selector, $m)){
                return $this->createHTMLElement($m[1], $text, $attr);
            }
            else{
                return self::createHTMLFragment($this, $selector);
            }
        }
        else if($selector[0] === '*'){
            if(strlen($selector) > 1){
                $selector = substr($selector, 1);
            }
            return self::searchElement($selector, $text, $this, true);
        }
        else{
            return self::searchElement($selector, $text, $this);
        }
    }


    function __toString(){
        $this->formatOutput = true;

        if($this->contentsType === 'html'){
            return $this->saveXML($this->doctype) . "\n" . $this->saveHTML($this->documentElement);
        }
        else if($this->contentsType === 'xml'){
            return $this->saveXML($this->doctype) . "\n" . $this->saveXML($this->documentElement);
        }
        else{
            return $this->saveHTML($this->documentElement);
        }
    }


    function querySelector($selector, $context = null){
        return self::searchElement($selector, $context, $this);
    }


    function querySelectorAll($selector, $context = null){
        return self::searchElement($selector, $context, $this, true);
    }


    function xpath($query){
        $nodelist = (new DOMXpath($this))->query($query);
        return $nodelist ? $nodelist[0] : null;
    }


    function xpathAll($query){
        $result   = [];
        $nodelist = (new DOMXpath($this))->query($query);

        if($nodelist){
            foreach($nodelist as $v){
                $result[] = $v;
            }
        }

        return $result;
    }


    private function createHTMLElement($tagName, $text = '', $attr = []){
        $el = $this->createElement($tagName);
        foreach($attr as $k => $v){
            $el->setAttribute($k, $v);
        }

        if(is_array($text)){
            if($tagName === 'table'){
                $el = $this->createTableElement($el, $text);
            }
            else if($tagName === 'select'){
                $el = $this->createSelectElement($el, $text);
            }
            else if($tagName === 'ol' or $tagName === 'ul'){
                $el = $this->createListElement($el, $text);
            }
        }
        else{
            $el->textContent = $text;
        }

        return $el;
    }


    private function createListElement($el, array $contents){
        foreach($contents as $v){
            $child = $this->createElement('li', $v);
            $el->appendChild($child);
        }
        return $el;
    }


    private function createSelectElement($el, array $contents){
        foreach($contents as $v){
            $child = $this->createElement('option', $v);
            $child->setAttribute('value', $v);
            $el->appendChild($child);
        }
        return $el;
    }


    private function createTableElement($el, array $contents){
        foreach($contents as $row){
            $tr = $this->createElement('tr');
            $el->appendChild($tr);
            foreach((array)$row as $cell){
                $td = $this->createElement('td', $cell);
                $tr->appendChild($td);
            }
        }
        return $el;
    }


    static function createHTMLFragment($document, $str){
        $fragment = $document->createDocumentFragment();
        //$fragment->appendXML($str);
        $dummy    = new self("<dummy>$str</dummy>");
        foreach($dummy->documentElement->childNodes as $child){
            $fragment->appendChild($document->importNode($child, true));
        }
        return $fragment;
    }


    static function searchElement($selector, $context, $document, $all = false){
        $selector = self::selector2xpath($selector, $context);
        $result   = (new \DOMXPath($document))->query($selector, $context);
        return $all ? iterator_to_array($result) : $result[0];
    }


    static function selector2xpath($input_selector, $context = null){
        $selector = trim($input_selector);
        $last     = '';
        $element  = true;
        $parts[]  = $context ? './/' : '//';
        $regex    = [
            'element'    => '/^(\*|[a-z_][a-z0-9_-]*|(?=[#.\[]))/i',
            'id_class'   => '/^([#.])([a-z0-9*_-]*)/i',
            'attribute'  => '/^\[\s*([^~|=\s]+)\s*([~|]?=)\s*"([^"]+)"\s*\]/',
            'attr_box'   => '/^\[([^\]]*)\]/',
            'combinator' => '/^(\s*[>+~\s,])/i',
        ];

        $pregMatchDelete = function ($pattern, &$subject, &$matches){
            if (preg_match($pattern, $subject, $matches)) {
                $subject = substr($subject, strlen($matches[0]));
                return true;
            }
        };

        while (strlen(trim($selector)) && ($last !== $selector)){
            $selector = $last = trim($selector);

            if($element){
                if ($pregMatchDelete($regex['element'], $selector, $e)){
                    $parts[] = ($e[1] === '') ? '*' : $e[1];
                }
                $element = false;
            }

            if($pregMatchDelete($regex['id_class'], $selector, $e)) {
                switch ($e[1]){
                    case '.':
                        $parts[] = '[contains(concat( " ", @class, " "), " ' . $e[2] . ' ")]';
                        break;
                    case '#':
                        $parts[] = '[@id="' . $e[2] . '"]';
                        break;
                }
            }

            if($pregMatchDelete($regex['attribute'], $selector, $e)) {
                switch ($e[2]){
                    case '!=':
                        $parts[] = '[@' . $e[1] . '!=' . $e[3] . ']';
                        break;
                    case '~=':
                        $parts[] = '[contains(concat( " ", @' . $e[1] . ', " "), " ' . $e[3] . ' ")]';
                        break;
                    case '|=':
                        $parts[] = '[@' . $e[1] . '="' . $e[3] . '" or starts-with(@' . $e[1] . ', concat( "' . $e[3] . '", "-"))]';
                        break;
                    default:
                        $parts[] = '[@' . $e[1] . '="' . $e[3] . '"]';
                        break;
                }
            }
            else if ($pregMatchDelete($regex['attr_box'], $selector, $e)) {
                $parts[] = '[@' . $e[1] . ']';
            }

            if ($pregMatchDelete($regex['combinator'], $selector, $e)) {
                switch (trim($e[1])) {
                    case ',':
                        $parts[] = ' | //*';
                        break;
                    case '>':
                        $parts[] = '/';
                        break;
                    case '+':
                        $parts[] = '/following-sibling::*[1]/self::';
                        break;
                    case '~': // CSS3
                        $parts[] = '/following-sibling::';
                        break;
                    default:
                        $parts[] = '//';
                        break;
                }
                $element = true;
            }
        }
        return implode('', $parts);
    }
}


class HTMLElement extends \DOMElement{ // https://www.php.net/manual/ja/class.domelement.php

    function __construct() {
        parent::__construct();
    }


    function __get($name){
        if($name === 'innerHTML'){
            $result = '';
            foreach($this->childNodes as $child){
                $result .= $this->ownerDocument->saveHTML($child);
            }
            return $result;
        }
        else if($name === 'outerHTML'){
            return $this->ownerDocument->saveHTML($this);
        }
        else if($name === 'children'){
            $children = [];
            foreach($this->childNodes as $v){
                if($v->nodeType === XML_ELEMENT_NODE){
                    $children[] = $v;
                }
            }
            return $children;
        }
        else{
            return $this->getAttribute($name);
        }
    }


    function __set($name, $value){
        if($name === 'innerHTML'){
            $fragment = document::createHTMLFragment($this->ownerDocument, $value);
            $this->textContent = '';
            $this->appendChild($fragment);
        }
        else if($name === 'outerHTML'){
            $fragment = document::createHTMLFragment($this->ownerDocument, $value);
            $this->parentNode->replaceChild($fragment, $this);
        }
        else{
            $this->setAttribute($name, $value);
        }
    }


    function __unset($name){
        $this->removeAttribute($name);
    }


    function __isset($name){
        return $this->hasAttribute($name);
    }


    function __toString(){
        return $this->ownerDocument->saveHTML($this);
    }


    function querySelector($selector){
        return document::searchElement($selector, $this, $this->ownerDocument);
    }


    function querySelectorAll($selector){
        return document::searchElement($selector, $this, $this->ownerDocument, true);
    }
}


class HTMLFragment extends \DOMDocumentFragment{ // https://www.php.net/manual/ja/class.domdocumentfragment.php

    function __construct() {
        parent::__construct();
    }


    function __get($name){
        if($name === 'innerHTML'){
            $result = '';
            foreach($this->childNodes as $child){
                $result .= $this->ownerDocument->saveHTML($child);
            }
            return $result;
        }
        else if($name === 'outerHTML'){
            return $this->ownerDocument->saveHTML($this);
        }
        else if($name === 'children'){
            $children = [];
            foreach($this->childNodes as $v){
                if($v->nodeType === XML_ELEMENT_NODE){
                    $children[] = $v;
                }
            }
            return $children;
        }
        else{
            return document::searchElement("#$name", $this, $this->ownerDocument);
        }
    }


    function querySelector($selector){
        return document::searchElement($selector, $this, $this->ownerDocument);
    }


    function querySelectorAll($selector){
        return document::searchElement($selector, $this, $this->ownerDocument, true);
    }


    function __toString(){
        return $this->ownerDocument->saveHTML($this);
    }
}
	<?php
	//document.php 2020/11/06 https://qiita.com/economist/items/aefccb2f073ed9429607


	class document extends \DOMDocument{ // https://www.php.net/manual/ja/class.domdocument.php

	function __construct($str = '<!DOCTYPE html><html lang="ja"><head><meta charset="utf-8"><title></title></head><body></body></html>'){
	parent::__construct();
	$this->registerNodeClass('\DOMElement','HTMLElement');
	$this->registerNodeClass('\DOMDocumentFragment','HTMLFragment');
	libxml_use_internal_errors(true);

	$pos = strpos($str, '<');

	if($pos >= 0 and $str[$pos+1] === '!'){
	$this->contentsType = 'html';
	$this->loadHTML(substr($str, $pos), LIBXML_HTML_NODEFDTD \| LIBXML_HTML_NOIMPLIED \| LIBXML_NONET \| LIBXML_COMPACT);
	}
	else if($pos >= 0 and $str[$pos+1] === '?'){
	$this->contentsType = 'xml';
	$this->loadXML(substr($str, $pos), LIBXML_NONET \| LIBXML_COMPACT); // https://www.php.net/manual/ja/libxml.constants.php
	}
	else{
	$this->contentsType = 'fragment';
	$this->loadHTML('<?xml encoding="utf-8">'.$str, LIBXML_HTML_NODEFDTD \| LIBXML_HTML_NOIMPLIED \| LIBXML_NONET \| LIBXML_COMPACT);
	}
	}


	function __get($name){
	if(in_array($name, ['html','head','body','title'], true)){
	return $this->getElementsByTagName($name)[0];
	}
	else{
	return $this->getElementById($name);
	}
	}


	function __invoke($selector, $text = null, $attr = []){
	if($selector instanceof self){
	return $this->importNode($selector->documentElement, true);
	}
	else if($selector instanceof \DOMNode){
	return $this->importNode($selector, true);
	}
	else if(preg_match('/</', $selector)){
	if(preg_match('/^<([\w\-]+)>$/', $selector, $m)){
	return $this->createHTMLElement($m[1], $text, $attr);
	}
	else{
	return self::createHTMLFragment($this, $selector);
	}
	}
	else if($selector[0] === '*'){
	if(strlen($selector) > 1){
	$selector = substr($selector, 1);
	}
	return self::searchElement($selector, $text, $this, true);
	}
	else{
	return self::searchElement($selector, $text, $this);
	}
	}


	function __toString(){
	$this->formatOutput = true;

	if($this->contentsType === 'html'){
	return $this->saveXML($this->doctype) . "\n" . $this->saveHTML($this->documentElement);
	}
	else if($this->contentsType === 'xml'){
	return $this->saveXML($this->doctype) . "\n" . $this->saveXML($this->documentElement);
	}
	else{
	return $this->saveHTML($this->documentElement);
	}
	}


	function querySelector($selector, $context = null){
	return self::searchElement($selector, $context, $this);
	}


	function querySelectorAll($selector, $context = null){
	return self::searchElement($selector, $context, $this, true);
	}


	function xpath($query){
	$nodelist = (new DOMXpath($this))->query($query);
	return $nodelist ? $nodelist[0] : null;
	}


	function xpathAll($query){
	$result = [];
	$nodelist = (new DOMXpath($this))->query($query);

	if($nodelist){
	foreach($nodelist as $v){
	$result[] = $v;
	}
	}

	return $result;
	}


	private function createHTMLElement($tagName, $text = '', $attr = []){
	$el = $this->createElement($tagName);
	foreach($attr as $k => $v){
	$el->setAttribute($k, $v);
	}

	if(is_array($text)){
	if($tagName === 'table'){
	$el = $this->createTableElement($el, $text);
	}
	else if($tagName === 'select'){
	$el = $this->createSelectElement($el, $text);
	}
	else if($tagName === 'ol' or $tagName === 'ul'){
	$el = $this->createListElement($el, $text);
	}
	}
	else{
	$el->textContent = $text;
	}

	return $el;
	}


	private function createListElement($el, array $contents){
	foreach($contents as $v){
	$child = $this->createElement('li', $v);
	$el->appendChild($child);
	}
	return $el;
	}


	private function createSelectElement($el, array $contents){
	foreach($contents as $v){
	$child = $this->createElement('option', $v);
	$child->setAttribute('value', $v);
	$el->appendChild($child);
	}
	return $el;
	}


	private function createTableElement($el, array $contents){
	foreach($contents as $row){
	$tr = $this->createElement('tr');
	$el->appendChild($tr);
	foreach((array)$row as $cell){
	$td = $this->createElement('td', $cell);
	$tr->appendChild($td);
	}
	}
	return $el;
	}


	static function createHTMLFragment($document, $str){
	$fragment = $document->createDocumentFragment();
	//$fragment->appendXML($str);
	$dummy = new self("<dummy>$str</dummy>");
	foreach($dummy->documentElement->childNodes as $child){
	$fragment->appendChild($document->importNode($child, true));
	}
	return $fragment;
	}


	static function searchElement($selector, $context, $document, $all = false){
	$selector = self::selector2xpath($selector, $context);
	$result = (new \DOMXPath($document))->query($selector, $context);
	return $all ? iterator_to_array($result) : $result[0];
	}


	static function selector2xpath($input_selector, $context = null){
	$selector = trim($input_selector);
	$last = '';
	$element = true;
	$parts[] = $context ? './/' : '//';
	$regex = [
	'element' => '/^(\\|[a-z_][a-z0-9_-]\|(?=[#.\[]))/i',
	'id_class' => '/^([#.])([a-z0-9_-])/i',
	'attribute' => '/^\[\s([^~\|=\s]+)\s([~\|]?=)\s"([^"]+)"\s\]/',
	'attr_box' => '/^\[([^\]]*)\]/',
	'combinator' => '/^(\s*[>+~\s,])/i',
	];

	$pregMatchDelete = function ($pattern, &$subject, &$matches){
	if (preg_match($pattern, $subject, $matches)) {
	$subject = substr($subject, strlen($matches[0]));
	return true;
	}
	};

	while (strlen(trim($selector)) && ($last !== $selector)){
	$selector = $last = trim($selector);

	if($element){
	if ($pregMatchDelete($regex['element'], $selector, $e)){
	$parts[] = ($e[1] === '') ? '*' : $e[1];
	}
	$element = false;
	}

	if($pregMatchDelete($regex['id_class'], $selector, $e)) {
	switch ($e[1]){
	case '.':
	$parts[] = '[contains(concat( " ", @class, " "), " ' . $e[2] . ' ")]';
	break;
	case '#':
	$parts[] = '[@id="' . $e[2] . '"]';
	break;
	}
	}

	if($pregMatchDelete($regex['attribute'], $selector, $e)) {
	switch ($e[2]){
	case '!=':
	$parts[] = '[@' . $e[1] . '!=' . $e[3] . ']';
	break;
	case '~=':
	$parts[] = '[contains(concat( " ", @' . $e[1] . ', " "), " ' . $e[3] . ' ")]';
	break;
	case '\|=':
	$parts[] = '[@' . $e[1] . '="' . $e[3] . '" or starts-with(@' . $e[1] . ', concat( "' . $e[3] . '", "-"))]';
	break;
	default:
	$parts[] = '[@' . $e[1] . '="' . $e[3] . '"]';
	break;
	}
	}
	else if ($pregMatchDelete($regex['attr_box'], $selector, $e)) {
	$parts[] = '[@' . $e[1] . ']';
	}

	if ($pregMatchDelete($regex['combinator'], $selector, $e)) {
	switch (trim($e[1])) {
	case ',':
	$parts[] = ' \| //*';
	break;
	case '>':
	$parts[] = '/';
	break;
	case '+':
	$parts[] = '/following-sibling::*[1]/self::';
	break;
	case '~': // CSS3
	$parts[] = '/following-sibling::';
	break;
	default:
	$parts[] = '//';
	break;
	}
	$element = true;
	}
	}
	return implode('', $parts);
	}
	}



	class HTMLElement extends \DOMElement{ // https://www.php.net/manual/ja/class.domelement.php

	function __construct() {
	parent::__construct();
	}


	function __get($name){
	if($name === 'innerHTML'){
	$result = '';
	foreach($this->childNodes as $child){
	$result .= $this->ownerDocument->saveHTML($child);
	}
	return $result;
	}
	else if($name === 'outerHTML'){
	return $this->ownerDocument->saveHTML($this);
	}
	else if($name === 'children'){
	$children = [];
	foreach($this->childNodes as $v){
	if($v->nodeType === XML_ELEMENT_NODE){
	$children[] = $v;
	}
	}
	return $children;
	}
	else{
	return $this->getAttribute($name);
	}
	}


	function __set($name, $value){
	if($name === 'innerHTML'){
	$fragment = document::createHTMLFragment($this->ownerDocument, $value);
	$this->textContent = '';
	$this->appendChild($fragment);
	}
	else if($name === 'outerHTML'){
	$fragment = document::createHTMLFragment($this->ownerDocument, $value);
	$this->parentNode->replaceChild($fragment, $this);
	}
	else{
	$this->setAttribute($name, $value);
	}
	}


	function __unset($name){
	$this->removeAttribute($name);
	}


	function __isset($name){
	return $this->hasAttribute($name);
	}


	function __toString(){
	return $this->ownerDocument->saveHTML($this);
	}


	function querySelector($selector){
	return document::searchElement($selector, $this, $this->ownerDocument);
	}


	function querySelectorAll($selector){
	return document::searchElement($selector, $this, $this->ownerDocument, true);
	}
	}



	class HTMLFragment extends \DOMDocumentFragment{ // https://www.php.net/manual/ja/class.domdocumentfragment.php

	function __construct() {
	parent::__construct();
	}


	function __get($name){
	if($name === 'innerHTML'){
	$result = '';
	foreach($this->childNodes as $child){
	$result .= $this->ownerDocument->saveHTML($child);
	}
	return $result;
	}
	else if($name === 'outerHTML'){
	return $this->ownerDocument->saveHTML($this);
	}
	else if($name === 'children'){
	$children = [];
	foreach($this->childNodes as $v){
	if($v->nodeType === XML_ELEMENT_NODE){
	$children[] = $v;
	}
	}
	return $children;
	}
	else{
	return document::searchElement("#$name", $this, $this->ownerDocument);
	}
	}


	function querySelector($selector){
	return document::searchElement($selector, $this, $this->ownerDocument);
	}


	function querySelectorAll($selector){
	return document::searchElement($selector, $this, $this->ownerDocument, true);
	}


	function __toString(){
	return $this->ownerDocument->saveHTML($this);
	}
	}