Template language similar to examples


#1

Hi,

I would like to process a text file which contains property-tokens which
are replaced appropiately by the template processing library.
Property-tokens can be single value, or can be collection of values.

The format I would like to use is something like this (the specific
characters used to signal might be different):

#!This is a comment
#DECLARE(%myProperty) #!Here I declare a property (variable) for
#!use within the template
#DECLARE(%myCollection),MULTI #!This would be an array collection
#SET(%mySymbol,1) #!assign a value of 1
#ADD(%myCollection,‘A’) #!add something to the collection
#ADD(%myCollection,‘B’) #!add something to the collection
#ADD(%myCollection,‘C’) #!add something to the collection

#!The code that goes below goes straight into the output,
#!except that it takes into account how the #IF is evaluated.
class myTestClass
def initialize
#IF(%mySymbol = 1)
@msg = ‘Test1’
#ELSE
@msg = ‘Test2’
#ENDIF
#INSERT(%myTemplateProcedure,%myCollection)
end
end

#GROUP(%myTemplateProcedure,%pCollection)
#!For this example, the code below generates:
#! @msgA = ‘A’
#! @msgB = ‘B’
#! @msgC = ‘C’
#!Not very useful, but serves as an example of the things I’m looking
for.
#FOR(%myCollection)
@msg%myCollection = ‘%myCollection’
#ENDFOR

The output would be:

class myTestClass
def initialize
@msg = ‘Test1’
@msgA = ‘A’
@msgB = ‘B’
@msgC = ‘C’
end
end

Are any of you guys familiar with a library that will do something
similar to the above?

Thanks,
Edgard


#2

(Apologies if this is a dupe, messages that cross the gateway seem to
have messed up headers - replies don’t go to the list?)

On Thu, 2006-02-02 at 05:32 +0900, Edgard R. wrote:

#!except that it takes into account how the #IF is evaluated.

end

Are any of you guys familiar with a library that will do something
similar to the above?

Wow. Couldn’t you just use ERB?

require 'erb'

my_symbol = 1
my_collection = ['A', 'B', 'C']
my_template_proc = lambda do |coll|
  coll.map { |a| "@msg#{a}" }.join(', ') + " = #{coll.inspect}"
end

e = ERB.new <<-EOF
  class MyTestClass
    def initialize
      <% if my_symbol %>
      @msg = 'Test1'
      <% else %>
      @msg = 'Test2'
      <% end %>
      <%= my_template_proc.call(my_collection) %>
    end
  end
EOF

puts e.result