84 lines
1.6 KiB
Ruby
84 lines
1.6 KiB
Ruby
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##
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## $Release: 2.6.5 $
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## copyright(c) 2006-2009 kuwata-lab.com all rights reserved.
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##
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module Erubis
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##
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## context object for Engine#evaluate
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##
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## ex.
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## template = <<'END'
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## Hello <%= @user %>!
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## <% for item in @list %>
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## - <%= item %>
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## <% end %>
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## END
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##
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## context = Erubis::Context.new(:user=>'World', :list=>['a','b','c'])
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## # or
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## # context = Erubis::Context.new
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## # context[:user] = 'World'
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## # context[:list] = ['a', 'b', 'c']
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##
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## eruby = Erubis::Eruby.new(template)
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## print eruby.evaluate(context)
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##
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class Context
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include Enumerable
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def initialize(hash=nil)
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hash.each do |name, value|
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self[name] = value
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end if hash
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end
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def [](key)
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return instance_variable_get("@#{key}")
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end
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def []=(key, value)
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return instance_variable_set("@#{key}", value)
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end
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def keys
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return instance_variables.collect { |name| name[1..-1] }
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end
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def each
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instance_variables.each do |name|
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key = name[1..-1]
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value = instance_variable_get(name)
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yield(key, value)
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end
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end
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def to_hash
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hash = {}
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self.keys.each { |key| hash[key] = self[key] }
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return hash
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end
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def update(context_or_hash)
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arg = context_or_hash
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if arg.is_a?(Hash)
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arg.each do |key, val|
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self[key] = val
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end
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else
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arg.instance_variables.each do |varname|
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key = varname[1..-1]
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val = arg.instance_variable_get(varname)
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self[key] = val
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end
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end
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end
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end
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end
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