From: Andrea Maschio <andrea.maschio@...>
Date: 2007-02-02T08:12:01+09:00
Subject: Re: Parsing text files with dynamic contents

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Well, that seems to be exactly what i was looking for, thank you Brian. So i
think i could give erb every line to parse or make him parse the entire file
before output it on the screen, right?
now, i've got a little question more.

Let's say i have a class, Foo, who calls a method of another class to print
the output. For example

class Foo

@w
@myvar


def initialize
   w=Writer.new
end

def print_something
   w.put_on_screen(1)
end
end

class Writer
 def put_on_screen(number)
    file=File.open("./screens/screen#{number}","r")
            file.each do |line|
              e=ERB.new(line)
              puts e.result
            end
 end
end

in the txt file, how can i make visible @myvar to print it on the screen?

Thanks again

2007/2/1, Brian Candler <B.Candler@pobox.com>:
>
> On Fri, Feb 02, 2007 at 06:35:21AM +0900, Andrea Maschio wrote:
> > Let's guess a simple example: i need to parse a text file, wityh
> variables
> > inside, and then output again the resulting text to a file or to screen.
> >
> > -------------start example text------------
> >
> > hello, it is #{now}, your name is #{name}
> >
> >
> > -------------end example text------------
> >
> > variables could be written also $var, or whatever else could be better.
> >
> > but obviously when i do
> >
> > file.each do |line|
> >   puts line     #here i need to do something to find the variable and
> > output the correct value
> > end
> >
> > How would you ruby experts do the correct parsing to output values
> instead
> > of the text content? Is there any class available that do this?
>
> Google for 'erb' and 'eruby'
>
>


-- 

Andrea Maschio

cell. +39 333 2672629
email: andrea.maschio@gmail.com
http://www.superandrew.it

"The real problem is not whether machines think but whether men do."
(B. F. Skinner )

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