forked from 521xueweihan/521xueweihan.github.io
-
Notifications
You must be signed in to change notification settings - Fork 0
/
highlight.html
221 lines (177 loc) · 11.5 KB
/
highlight.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8">
<title>削微寒 - 使用highlight实现代码高亮</title>
<meta name="description" content="">
<meta name="author" content="xueweihan">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- Le HTML5 shim, for IE6-8 support of HTML elements -->
<!--[if lt IE 9]>
<script src="http://www.xueweihan.com/theme/html5.js"></script>
<![endif]-->
<!-- Le styles -->
<link href="http://www.xueweihan.com/theme/bootstrap.min.css" rel="stylesheet">
<link href="http://www.xueweihan.com/theme/bootstrap.min.responsive.css" rel="stylesheet">
<link href="http://www.xueweihan.com/theme/local.css" rel="stylesheet">
<link href="http://www.xueweihan.com/theme/pygments.css" rel="stylesheet">
<!-- So Firefox can bookmark->"abo this site" -->
<link href="http://www.xueweihan.com/feeds/all.atom.xml" rel="alternate" title="削微寒" type="application/atom+xml">
</head>
<body>
<div class="navbar">
<div class="navbar-inner">
<div class="container">
<a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</a>
<a class="brand" href="http://www.xueweihan.com">削微寒</a>
<div class="nav-collapse">
<ul class="nav">
<li><a href="http://www.xueweihan.com/pages/my-book-life.html">我的书单</a></li>
</ul>
</div>
</div>
</div>
</div>
<div class="container">
<div class="content">
<div class="row">
<div class="span9">
<div class='article'>
<div class="content-title">
<h1>使用highlight实现代码高亮</h1>
2016-04-01 21:46
by <a class="url fn" href="http://www.xueweihan.com/author/xueweihan.html">xueweihan</a>
</div>
<div><h2>步骤</h2>
<ol>
<li>去官网下载：https://highlightjs.org/</li>
<li>在页面上引入，样式css和highlight.js静态文件</li>
<li>加入一段js代码，使得highlight.js生效，分析<code><pre><code></code></pre></code>标签中的内容，实现代码高亮：</li>
</ol>
<div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">script</span><span class="o">></span><span class="nx">hljs</span><span class="p">.</span><span class="nx">initHighlightingOnLoad</span><span class="p">();</span><span class="o"><</span><span class="err">/script></span>
</pre></div>
<h2>实例：</h2>
<p><strong>注意</strong>：我的css和js都放到了<code>static</code>目录下</p>
<div class="highlight"><pre><span></span><span class="cp"><!DOCTYPE html></span>
<span class="p"><</span><span class="nt">html</span> <span class="na">lang</span><span class="o">=</span><span class="s">"zh-CN"</span><span class="p">></span>
<span class="p"><</span><span class="nt">head</span><span class="p">></span>
<span class="p"><</span><span class="nt">meta</span> <span class="na">charset</span><span class="o">=</span><span class="s">"utf-8"</span><span class="p">></span>
<span class="c"><!-- Hightlight.css --></span>
<span class="c"><!-- 我选用的是hybrid主题 --></span>
<span class="p"><</span><span class="nt">link</span> <span class="na">href</span><span class="o">=</span><span class="s">"/static/css/hybrid.css"</span> <span class="na">rel</span><span class="o">=</span><span class="s">"stylesheet"</span><span class="p">></span>
<span class="p"></</span><span class="nt">head</span><span class="p">></span>
<span class="p"><</span><span class="nt">body</span><span class="p">></span>
<span class="p"><</span><span class="nt">pre</span><span class="p">><</span><span class="nt">code</span> <span class="na">class</span><span class="o">=</span><span class="s">"language-py"</span><span class="p">></span>
def open(self, doc_uuid=None):
if doc_uuid is None:
self.uuid = str(uuid.uuid4())
<span class="p"></</span><span class="nt">code</span><span class="p">></</span><span class="nt">pre</span><span class="p">></span>
<span class="c"><!-- hightlight.js --></span>
<span class="p"><</span><span class="nt">script</span> <span class="na">src</span><span class="o">=</span><span class="s">"/static/js/highlight.pack.js"</span><span class="p">></</span><span class="nt">script</span><span class="p">></span>
<span class="p"><</span><span class="nt">script</span><span class="p">></span><span class="nx">hljs</span><span class="p">.</span><span class="nx">initHighlightingOnLoad</span><span class="p">();</</span><span class="nt">script</span><span class="p">></span>
<span class="p"></</span><span class="nt">body</span><span class="p">></span>
<span class="p"></</span><span class="nt">html</span><span class="p">></span>
</pre></div>
<h2>坑</h2>
<p>现在有一个问题:因为文章中有代码块，代码块中的代码片段可以通过highlight.js转变成
安全的内容。但是如果对用户输入的全部内容进行转义，则会造成：代码块中的代码显示出错。</p>
<p>解决办法：使用正则匹配，对非<code><pre></pre></code>标签内容进行转义。<br />
终极解决办法：这个问题把我都弄崩溃了，其实问题很简单，因为highlight.js对于'lt'和'gt'会渲染
成高亮，导致转移后的'>'和'<'，html无法识别！所以只需要，反转义代码块中的<code>&amp;</code>。我靠坑啊！</p>
<div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">code_unescape</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> 代码块中的内容不转义</span>
<span class="sd"> """</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="c1"># 反转义"&amp;"，使得'<','>'是html转义的符号。</span>
<span class="c1"># hightligth.js有个坑，lg和lt会高亮，使得html识别不了"&lt;"和"&gt;"。</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s2">"&amp;"</span><span class="p">,</span> <span class="s2">"&"</span><span class="p">)</span>
<span class="k">return</span> <span class="n">s</span>
<span class="n">content</span> <span class="o">=</span> <span class="nb">unicode</span><span class="p">(</span><span class="n">markdown2</span><span class="o">.</span><span class="n">markdown</span><span class="p">(</span><span class="n">escape</span><span class="o">.</span><span class="n">html_escape</span><span class="p">(</span><span class="n">content</span><span class="p">),</span>
<span class="n">extras</span><span class="o">=</span><span class="p">[</span><span class="s1">'fenced-code-blocks'</span><span class="p">]))</span>
<span class="c1"># 反转义代码块中的"&amp;"</span>
<span class="n">m</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s1">'\<pre\>[\s\S]*\<\/pre\>'</span><span class="p">)</span>
<span class="n">content</span> <span class="o">=</span> <span class="n">m</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span><span class="n">code_unescape</span><span class="p">,</span> <span class="n">content</span><span class="p">)</span>
</pre></div>
<h2>参考：</h2>
<ul>
<li><a href="http://www.ghostchina.com/adding-syntax-highlighting-to-ghost-using-highlight-js/">ghostchina</a></li>
<li><a href="https://github.com/trentm/python-markdown2/wiki/fenced-code-blocks">highlight</a></li>
<li><a href="http://www.cnblogs.com/smdm/p/5323140.html">markdown以及highlight</a></li>
</ul></div>
<hr>
<div class="comments">
<!-- Duoshuo Comment BEGIN -->
<div class="ds-thread"></div>
</div>
<script type="text/javascript">
var duoshuoQuery = {short_name:"xueweihan"};
(function() {
var ds = document.createElement('script');
ds.type = 'text/javascript';ds.async = true;
ds.src = 'http://static.duoshuo.com/embed.js';
ds.charset = 'UTF-8';
(document.getElementsByTagName('head')[0]
|| document.getElementsByTagName('body')[0]).appendChild(ds);
})();
</script>
<noscript>Please enable JavaScript to view the comments.</noscript>
<!-- Duoshuo Comment END -->
</div>
</div>
<div class="span3">
<div class="well" style="padding: 8px 0; background-color: #FBFBFB;">
<ul class="nav nav-list">
<li class="nav-header">
导航
</li>
<li><a href="http://www.xueweihan.com/archives.html">按时间</a>
<li><a href="http://www.xueweihan.com/tags.html">按标签</a>
<li><a href="http://www.xueweihan.com/feeds/all.atom.xml" rel="alternate">订阅</a></li>
</ul>
</div>
<div class="well" style="padding: 8px 0; background-color: #FBFBFB;">
<ul class="nav nav-list">
<li class="nav-header">
分类
</li>
<li><a href="http://www.xueweihan.com/category/bian-cheng.html">编程</a></li>
<li><a href="http://www.xueweihan.com/category/ri-ji.html">日记</a></li>
</ul>
</div>
<div class="social">
<div class="well" style="padding: 8px 0; background-color: #FBFBFB;">
<ul class="nav nav-list">
<li class="nav-header">
我在这里
</li>
<li><a href="https://github.com/521xueweihan">github</a></li>
<li><a href="http://www.cnblogs.com/xueweihan/">博客园</a></li>
</ul>
</div>
</div>
</div> </div> </div>
<footer>
<br />
<p><a href="http://www.xueweihan.com">削微寒</a> © xueweihan 2016</p>
</footer>
</div> <!-- /container -->
<script>
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "//hm.baidu.com/hm.js?0d41cbe881e2dcf6beff76ecd96acf7f";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script>
<script src="http://www.xueweihan.com/theme/jquery.min.js"></script>
<script src="http://www.xueweihan.com/theme/bootstrap-collapse.js"></script>
<script>var _gaq=[['_setAccount','UA-74442464-1'],['_trackPageview']];(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src='//www.google-analytics.com/ga.js';s.parentNode.insertBefore(g,s)}(document,'script'))</script>
<a href="https://github.com/521xueweihan"><img style="position: absolute; top: 40px; right: 0; border: 0;" src="http://www.xueweihan.com/theme/forkme_right_darkblue_121621.png" alt="Fork me on GitHub" /></a>
</body>
</html>