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<?php namespace Yajra\DataTables\Html; use Illuminate\Contracts\Routing\UrlGenerator; use Illuminate\Contracts\View\Factory; use Illuminate\Support\HtmlString; class HtmlBuilder { /** * The URL generator instance. * * @var \Illuminate\Contracts\Routing\UrlGenerator */ protected UrlGenerator $url; /** * The View Factory instance. * * @var \Illuminate\Contracts\View\Factory */ protected Factory $view; /** * Create a new HTML builder instance. * * @param \Illuminate\Contracts\Routing\UrlGenerator $url * @param \Illuminate\Contracts\View\Factory $view */ public function __construct(UrlGenerator $url, Factory $view) { $this->url = $url; $this->view = $view; } /** * Convert entities to HTML characters. * * @param string $value * @return string */ public function decode(string $value): string { return html_entity_decode($value, ENT_QUOTES, 'UTF-8'); } /** * Generate a link to a JavaScript file. * * @param string $url * @param array $attributes * @param bool|null $secure * @return \Illuminate\Support\HtmlString */ public function script(string $url, array $attributes = [], bool $secure = null): HtmlString { $attributes['src'] = $this->url->asset($url, $secure); return $this->toHtmlString('<script'.$this->attributes($attributes).'></script>'); } /** * Transform the string to an Html serializable object * * @param string $html * @return \Illuminate\Support\HtmlString */ protected function toHtmlString(string $html): HtmlString { return new HtmlString($html); } /** * Build an HTML attribute string from an array. * * @param array $attributes * @return string */ public function attributes(array $attributes): string { $html = []; foreach ($attributes as $key => $value) { $element = $this->attributeElement($key, $value); if (! is_null($element)) { $html[] = $element; } } return ! empty($html) ? ' '.implode(' ', $html) : ''; } /** * Build a single attribute element. * * @param string $key * @param mixed $value * @return mixed */ protected function attributeElement(string $key, mixed $value): mixed { // For numeric keys we will assume that the value is a boolean attribute // where the presence of the attribute represents a true value and the // absence represents a false value. // This will convert HTML attributes such as "required" to a correct // form instead of using incorrect numerics. if (is_numeric($key)) { return $value; } // Treat boolean attributes as HTML properties if (is_bool($value) && $key !== 'value') { return $value ? $key : ''; } if (is_array($value) && $key === 'class') { return 'class="'.implode(' ', $value).'"'; } if (is_bool($value) || is_float($value) || is_int($value) || is_resource($value) || is_string($value)) { return $key.'="'.e(strval($value), false).'"'; } return null; } /** * Generate a link to a CSS file. * * @param string $url * @param array $attributes * @param bool|null $secure * @return \Illuminate\Support\HtmlString */ public function style(string $url, array $attributes = [], bool $secure = null): HtmlString { $defaults = ['media' => 'all', 'type' => 'text/css', 'rel' => 'stylesheet']; $attributes = array_merge($defaults, $attributes); $attributes['href'] = $this->url->asset($url, $secure); return $this->toHtmlString('<link'.$this->attributes($attributes).'>'); } /** * Generate an HTML image element. * * @param string $url * @param string|null $alt * @param array $attributes * @param bool|null $secure * @return \Illuminate\Support\HtmlString */ public function image(string $url, string $alt = null, array $attributes = [], bool $secure = null): HtmlString { $attributes['alt'] = $alt; return $this->toHtmlString('<img src="'.$this->url->asset($url, $secure).'"'.$this->attributes($attributes).'>'); } /** * Generate a link to a Favicon file. * * @param string $url * @param array $attributes * @param bool|null $secure * @return \Illuminate\Support\HtmlString */ public function favicon(string $url, array $attributes = [], bool $secure = null): HtmlString { $defaults = ['rel' => 'shortcut icon', 'type' => 'image/x-icon']; $attributes = array_merge($defaults, $attributes); $attributes['href'] = $this->url->asset($url, $secure); return $this->toHtmlString('<link'.$this->attributes($attributes).'>'); } /** * Generate a HTTPS HTML link. * * @param string $url * @param string|null $title * @param array $attributes * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function secureLink( string $url, string $title = null, array $attributes = [], bool $escape = true ): HtmlString { return $this->link($url, $title, $attributes, true, $escape); } /** * Generate a HTML link. * * @param string $url * @param string|null $title * @param array $attributes * @param bool|null $secure * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function link( string $url, string $title = null, array $attributes = [], bool $secure = null, bool $escape = true ): HtmlString { $url = $this->url->to($url, [], $secure); if (is_null($title)) { $title = $url; } if ($escape) { $title = $this->entities($title); } return $this->toHtmlString( '<a href="'.$this->entities($url).'"'.$this->attributes($attributes).'>'.$title.'</a>' ); } /** * Convert an HTML string to entities. * * @param string $value * @return string */ public function entities(string $value): string { return htmlentities($value, ENT_QUOTES, 'UTF-8', false); } /** * Generate a HTTPS HTML link to an asset. * * @param string $url * @param string|null $title * @param array $attributes * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function linkSecureAsset( string $url, string $title = null, array $attributes = [], bool $escape = true ): HtmlString { return $this->linkAsset($url, $title, $attributes, true, $escape); } /** * Generate a HTML link to an asset. * * @param string $url * @param string|null $title * @param array $attributes * @param bool|null $secure * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function linkAsset( string $url, string $title = null, array $attributes = [], bool $secure = null, bool $escape = true ): HtmlString { $url = $this->url->asset($url, $secure); return $this->link($url, $title ?: $url, $attributes, $secure, $escape); } /** * Generate a HTML link to a named route. * * @param string $name * @param string|null $title * @param array $parameters * @param array $attributes * @param bool|null $secure * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function linkRoute( string $name, string $title = null, array $parameters = [], array $attributes = [], bool $secure = null, bool $escape = true ): HtmlString { return $this->link($this->url->route($name, $parameters), $title, $attributes, $secure, $escape); } /** * Generate a HTML link to a controller action. * * @param string $action * @param string|null $title * @param array $parameters * @param array $attributes * @param bool|null $secure * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function linkAction( string $action, string $title = null, array $parameters = [], array $attributes = [], bool $secure = null, bool $escape = true ): HtmlString { return $this->link($this->url->action($action, $parameters), $title, $attributes, $secure, $escape); } /** * Generate a HTML link to an email address. * * @param string $email * @param string|null $title * @param array $attributes * @param bool $escape * @return \Illuminate\Support\HtmlString */ public function mailto(string $email, string $title = null, array $attributes = [], bool $escape = true): HtmlString { $email = $this->email($email); $title = $title ?: $email; if ($escape) { $title = $this->entities($title); } $email = $this->obfuscate('mailto:').$email; return $this->toHtmlString('<a href="'.$email.'"'.$this->attributes($attributes).'>'.$title.'</a>'); } /** * Obfuscate an e-mail address to prevent spam-bots from sniffing it. * * @param string $email * @return string */ public function email(string $email): string { return str_replace('@', '@', $this->obfuscate($email)); } /** * Obfuscate a string to prevent spam-bots from sniffing it. * * @param string $value * @return string * @throws \Exception */ public function obfuscate(string $value): string { $safe = ''; foreach (str_split($value) as $letter) { if (ord($letter) > 128) { return $letter; } // To properly obfuscate the value, we will randomly convert each letter to // its entity or hexadecimal representation, keeping a bot from sniffing // the randomly obfuscated letters out of the string on the responses. switch (random_int(1, 3)) { case 1: $safe .= '&#'.ord($letter).';'; break; case 2: $safe .= '&#x'.dechex(ord($letter)).';'; break; case 3: $safe .= $letter; } } return $safe; } /** * Generates non-breaking space entities based on number supplied. * * @param int $num * @return string */ public function nbsp(int $num = 1): string { return str_repeat(' ', $num); } /** * Generate an ordered list of items. * * @param array $list * @param array $attributes * @return \Illuminate\Support\HtmlString|string */ public function ol(array $list, array $attributes = []): HtmlString|string { return $this->listing('ol', $list, $attributes); } /** * Create a listing HTML element. * * @param string $type * @param array $list * @param array $attributes * @return \Illuminate\Support\HtmlString|string */ protected function listing(string $type, array $list, array $attributes = []): HtmlString|string { $html = ''; if (empty($list)) { return $html; } // Essentially we will just spin through the list and build the list of the HTML // elements from the array. We will also handled nested lists in case that is // present in the array. Then we will build out the final listing elements. foreach ($list as $key => $value) { $html .= $this->listingElement($key, $type, $value); } $attributes = $this->attributes($attributes); return $this->toHtmlString("<{$type}{$attributes}>{$html}</{$type}>"); } /** * Create the HTML for a listing element. * * @param mixed $key * @param string $type * @param mixed $value * @return \Illuminate\Support\HtmlString|string */ protected function listingElement(mixed $key, string $type, mixed $value): HtmlString|string { if (is_array($value)) { return $this->nestedListing($key, $type, $value); } else { if (is_bool($value) || is_float($value) || is_int($value) || is_resource($value) || is_string($value) || is_null($value) ) { return '<li>'.e(strval($value), false).'</li>'; } } return '<li>'.$value.'</li>'; } /** * Create the HTML for a nested listing attribute. * * @param mixed $key * @param string $type * @param array $value * @return \Illuminate\Support\HtmlString|string */ protected function nestedListing(mixed $key, string $type, array $value): HtmlString|string { if (is_int($key)) { return $this->listing($type, $value); } else { return '<li>'.$key.$this->listing($type, $value).'</li>'; } } /** * Generate an un-ordered list of items. * * @param array $list * @param array $attributes * @return \Illuminate\Support\HtmlString|string */ public function ul(array $list, array $attributes = []): HtmlString|string { return $this->listing('ul', $list, $attributes); } /** * Generate a description list of items. * * @param array $list * @param array $attributes * @return \Illuminate\Support\HtmlString */ public function dl(array $list, array $attributes = []): HtmlString { $attributes = $this->attributes($attributes); $html = "<dl{$attributes}>"; foreach ($list as $key => $value) { $value = (array) $value; $html .= "<dt>$key</dt>"; foreach ($value as $v_value) { $html .= "<dd>$v_value</dd>"; } } $html .= '</dl>'; return $this->toHtmlString($html); } /** * Generate a meta tag. * * @param string $name * @param string $content * @param array $attributes * @return \Illuminate\Support\HtmlString */ public function meta(string $name, string $content, array $attributes = []): HtmlString { $defaults = compact('name', 'content'); $attributes = array_merge($defaults, $attributes); return $this->toHtmlString('<meta'.$this->attributes($attributes).'>'); } /** * Generate an html tag. * * @param string $tag * @param mixed $content * @param array $attributes * @return \Illuminate\Support\HtmlString */ public function tag(string $tag, mixed $content, array $attributes = []): HtmlString { $content = is_array($content) ? implode('', $content) : $content; if (is_bool($content) || is_float($content) || is_int($content) || is_resource($content) || is_string($content) || is_null($content) ) { return $this->toHtmlString( '<'.$tag.$this->attributes($attributes).'>'.$this->toHtmlString(strval($content)).'</'.$tag.'>' ); } return $this->toHtmlString('<'.$tag.$this->attributes($attributes).'>'.$content.'</'.$tag.'>'); } }
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