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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[] = $element;
}
}
return count($html) > 0 ? ' '.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(' ', $value).'"';
}
if (! is_null($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
{
$html = '';
if (count($list) === 0) {
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, $value);
} else {
return '<li>'.e(strval($value), false).'</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_key => $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;
return $this->toHtmlString('<'.$tag.$this->attributes($attributes).'>'.$this->toHtmlString(strval($content)).'</'.$tag.'>');
}
}