在预标签内转换转义少于标志

时间:2016-08-10 16:03:46

标签: laravel htmlpurifier parsedown

我使用HTMLPurifier来转义我网站中的字符。有效地将所有<>转换为&gt;&lt。我还希望在网站中显示代码,但在使用<pre><code>...</code></pre>将代码放入网站时,而不是将&gt;&lt符号呈现为<和{{1它们保持显示为编码>

我知道 &gt; 标签用于显示预先格式化的文字

我如何安全地转换这些符号(<pre>&amp; &gt;),只有在&lt;标记中包含以呈现为(<pre><code>...</code></pre>&amp; {{1使用JS / JQuery?

<转换为>

注意:渲染HTML标记时不会发生这种情况。我相信它是由HTMLPurifier引起的。

HTML正确呈现为

<php 'default' => 'local'

更新#1:

我在网站上使用Markdown,我的HTMLPurifier配置如下:

&lt;php 'default' =&gt; 'local'

更新#2(02/19/19)

这个问题让我搜索了以前的代码。问题来自Markdown解析器,它是 Parsedown 而不是Purifier。净化器工作正常。我已在下面添加了Markdown配置和使用代码:

    <div>
      ...Some code here...
    </div>

用法:

    <?php
    /**
     * Ok, glad you are here
     * first we get a config instance, and set the settings
     * $config = HTMLPurifier_Config::createDefault();
     * $config->set('Core.Encoding', $this->config->get('purifier.encoding'));
     * $config->set('Cache.SerializerPath', $this->config->get('purifier.cachePath'));
     * if ( ! $this->config->get('purifier.finalize')) {
     *     $config->autoFinalize = false;
     * }
     * $config->loadArray($this->getConfig());
     *
     * You must NOT delete the default settings
     * anything in settings should be compacted with params that needed to instance HTMLPurifier_Config.
     *
     * @link http://htmlpurifier.org/live/configdoc/plain.html
     */

    return [
        'encoding'      => 'UTF-8',
        'finalize'      => true,
        'cachePath'     => storage_path('app/purifier'),
        'cacheFileMode' => 0755,
        'settings'      => [
            'default' => [
                'HTML.Doctype'             => 'HTML 4.01 Transitional',
                'HTML.Allowed'             => 'blockquote,h1,h2,h3,h4,h5,h6,pre,code,div[class],b,strong,i,em,a[href|title],ul,ol,li,p[style],br,span[style],img[width|height|alt|src]',
                'CSS.AllowedProperties'    => 'font,font-size,font-weight,font-style,font-family,text-decoration,padding-left,color,background-color,text-align',
                'AutoFormat.AutoParagraph' => false,
                'AutoFormat.RemoveEmpty'   => true,
            ],
            'test'    => [
                'Attr.EnableID' => true
            ],
            "youtube" => [
                "HTML.SafeIframe"      => 'true',
                "URI.SafeIframeRegexp" => "%^(http://|https://|//)(www.youtube.com/embed/|player.vimeo.com/video/)%",
            ],
        ],

    ];

This is the method I'm using to call the Purifier

    public function store(Request $request)
        {
            //Validate the data
            $this->validate($request, array(
                'title' => 'required|max:255',
                'slug' => 'required|alpha_dash|min:5|max:255|unique:posts,slug',
                'category_id' =>'required|integer',
                'body' => 'required'
            ));
            //Store in the database
            $post = new Post;

            $post->title = $request->title;
            $post->slug = $request->slug;
            $post->category_id = $request->category_id;
            $post->body = Purifier::clean($request->body, "youtube");

            $post->save();

            $post->tags()->sync($request->tags, false);

            Session::flash('success', 'AWESOMESAUCE! Your post was saved successfully!');

            //redirect to another page
            return redirect()->route('posts.show', $post->id);

        }

2 个答案:

答案 0 :(得分:0)

使用htmlspecialchars()函数来实现此目的,htmlspecialchars()函数转换预定义字符&#34;&lt;&#34; (小于)和&#34;&gt;&#34; (大于)HTML实体:

<?php
$str = "This is some <b>bold</b> text.";
echo htmlspecialchars($str);
?>

这将打印:

This is some &lt;b&gt;bold&lt;/b&gt; text.

答案 1 :(得分:0)

我已经解决了在Purifier配置中添加到 HTML.Allowed 属性的问题:

pre[class],code

然后我仅使用以下代码清除代码:

$post->body = clean($request->body, "youtube");

如果您将TinyMCE用作编辑器,则还必须将其添加到属性 extended_valid_elements

extended_valid_elements: 'a[href|target],pre[class],code',