这可能是一个愚蠢的问题，但我想知道是否有任何方法可以在 Jekyll 中生成标记来保留 Liquid 标签的缩进。如果问题无法解决，世界就不会终结。我只是很好奇，因为我喜欢我的代码看起来整洁，即使是编译后的。 :)
例如我有这两个：
base.html：
<body>
<div id="page">
{{content}}
</div>
</body>
index.md:
---
layout: base
---
<div id="recent_articles">
{% for post in site.posts %}
<div class="article_puff">
<img src="/resources/images/fancyi.jpg" alt="" />
<h2><a href="{{post.url}}">{{post.title}}</a></h2>
<p>{{post.description}}</p>
<a href="{{post.url}}" class="read_more">Read more</a>
</div>
{% endfor %}
</div>
问题是导入的 {{content}}-标签在渲染时没有使用上面使用的缩进。
所以而不是
<body>
<div id="page">
<div id="recent_articles">
<div class="article_puff">
<img src="/resources/images/fancyimage.jpg" alt="" />
<h2><a href="/articles/2012/11/14/gettin-down-with-rwd.html">Gettin' down with responsive web design</a></h2>
<p>Everyone's talking about it. Your client wants it. You need to code it.</p>
<a href="/articles/2012/11/14/gettin-down-with-rwd.html" class="read_more">Read more</a>
</div>
</div>
</div>
</body>
我明白了
<body>
<div id="page">
<div id="recent_articles">
<div class="article_puff">
<img src="/resources/images/fancyimage.jpg" alt="" />
<h2><a href="/articles/2012/11/14/gettin-down-with-rwd.html">Gettin' down with responsive web design</a></h2>
<p>Everyone's talking about it. Your client wants it. You need to code it.</p>
<a href="/articles/2012/11/14/gettin-down-with-rwd.html" class="read_more">Read more</a>
</div>
</div>
</div>
</body>
似乎只有第一行缩进正确。其余的从行的开头开始...那么，多行液体模板导入？ :)
使用液体过滤器
我设法使用液体过滤器完成这项工作。有一些注意事项：
您的输入必须干净。我有一些弯引号和不可打印的字符，看起来像一些文件中的空格（来自 Word 的 copypasta 或类似文件），并且看到“UTF-8 中的无效字节序列”作为 Jekyll 错误。
它可能会破坏一些东西。我使用的是 twitter bootstrap 中的
<i class="icon-file"></i><i class="icon-file"/>{% codeblock %}虽然这会清理诸如
{{ content }}require 'rubygems'
require 'json'
require 'nokogiri'
require 'nokogiri-pretty'
module Jekyll
module PrettyPrintFilter
def pretty_print(input)
#seeing some ASCII-8 come in
input = input.encode("UTF-8")
#Parsing with nokogiri first cleans up some things the XSLT can't handle
content = Nokogiri::HTML::DocumentFragment.parse input
parsed_content = content.to_html
#Unfortunately nokogiri-pretty can't use DocumentFragments...
html = Nokogiri::HTML parsed_content
pretty = html.human
#...so now we need to remove the stuff it added to make valid HTML
output = PrettyPrintFilter.strip_extra_html(pretty)
output
end
def PrettyPrintFilter.strip_extra_html(html)
#type declaration
html = html.sub('<?xml version="1.0" encoding="ISO-8859-1"?>','')
#second <html> tag
first = true
html = html.gsub('<html>') do |match|
if first == true
first = false
next
else
''
end
end
#first </html> tag
html = html.sub('</html>','')
#second <head> tag
first = true
html = html.gsub('<head>') do |match|
if first == true
first = false
next
else
''
end
end
#first </head> tag
html = html.sub('</head>','')
#second <body> tag
first = true
html = html.gsub('<body>') do |match|
if first == true
first = false
next
else
''
end
end
#first </body> tag
html = html.sub('</body>','')
html
end
end
end
Liquid::Template.register_filter(Jekyll::PrettyPrintFilter)
在生成 jekyll 站点后，我在 rakefile 中使用一个任务来漂亮地打印输出。
require 'nokogiri'
require 'nokogiri-pretty'
desc "Pretty print HTML output from Jekyll"
task :pretty_print do
#change public to _site or wherever your output goes
html_files = File.join("**", "public", "**", "*.html")
Dir.glob html_files do |html_file|
puts "Cleaning #{html_file}"
file = File.open(html_file)
contents = file.read
begin
#we're gonna parse it as XML so we can apply an XSLT
html = Nokogiri::XML(contents)
#the human() method is from nokogiri-pretty. Just an XSL transform on the XML.
pretty_html = html.human
rescue Exception => msg
puts "Failed to pretty print #{html_file}: #{msg}"
end
#Yep, we're overwriting the file. Potentially destructive.
file = File.new(html_file,"w")
file.write(pretty_html)
file.close
end
end
{{content | tidy }}来包含 html 来实现此目的。
快速搜索表明
，红宝石整洁的宝石可能无法维护，但 nokogiri 是正确的选择。 这当然意味着安装 nokogiri gem。 请参阅
有关编写液体过滤器的建议和Jekyll 示例过滤器。 示例可能如下所示：在
_plugins中，添加一个名为 tidy-html.rb 的脚本，其中包含：
require 'nokogiri'
module TextFilter
def tidy(input)
desired = Nokogiri::HTML::DocumentFragment.parse(input).to_html
end
end
Liquid::Template.register_filter(TextFilter)
（未经测试）