嵌入式 Ruby Erubis

Erubis 是一個快速、安全和具備高可擴展性的 eRuby 的實現，主要特征如下：

• 快速，幾乎是 ERB 的三倍，比用C開發的eRuby還要快10%
• File caching of converted Ruby script support.
• Auto escaping (sanitizing) support, it means that '<%= %>' can be escaped in default. It is desirable for web application.
• Spaces around '<% %>' are trimmed automatically only when '<%' is at the beginning of line and '%>' is at the end of line.
• Embedded pattern changeable (default '<% %>'), for example '[% %]' or ' ' are available.
• Enable to handle Processing Instructions (PI) as embedded pattern (ex. ' '). This is desirable for XML/HTML than '<% .. %>' because the latter breaks HTML design but the former doesn't.
• Multi-language support (Ruby/PHP/C/Java/Scheme/Perl/Javascript).
• Context object available and easy to combine eRuby template with YAML datafile (see the below example).
• Print statement available.
• Easy to expand and customize in subclass
  • Print statement support
  • Lines starting with percent character ('%') support
  • Another embedded pattern support
  • etc...
• Ruby on Rails support.
• Mod_ruby support.

下圖是幾個嵌入式 Ruby 的性能比較：

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