Created
March 9, 2021 00:28
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| class HTMLDocument | |
| def initialize | |
| @doc = "" | |
| yield self if block_given? | |
| end | |
| def el(type, attrs={}) | |
| case type | |
| when :text | |
| @doc << yield | |
| when :input | |
| @doc << opening_tag(type, attrs) | |
| else | |
| @doc << opening_tag(type, attrs) | |
| yield | |
| @doc << closing_tag(type) | |
| end | |
| end | |
| def opening_tag(name, attrs) | |
| if attrs.empty? | |
| "<#{name}>" | |
| else | |
| "<#{name} #{attributes(attrs)}>" | |
| end | |
| end | |
| def closing_tag(name) | |
| "</#{name}>" | |
| end | |
| def attributes(attrs) | |
| attrs.map do |key, value| | |
| %Q(#{key}="#{value}") | |
| end.join(" ") | |
| end | |
| def to_s | |
| @doc | |
| end | |
| end | |
| doc = HTMLDocument.new do |d| | |
| d.el :html, lang: "en-GB" do | |
| d.el :head do | |
| d.el :title do | |
| d.el :text do | |
| "Hello, " | |
| end | |
| d.el :text do | |
| "World!" | |
| end | |
| end | |
| end | |
| end | |
| end | |
| puts doc.to_s | |
| #=> <html lang="en-GB"><head><title>Hello, World!</title></head></html> |
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