Re: r4 - the simplest ruby pre-processor

On Mon, 12 Sep 2005, Christian Neukirchen wrote:

Bob Hutchison <hutch@xxxxxxxxxxxx> writes:

That one change is from:


        "puts #{line.chomp.dump}\n"


to:
    "puts \"#{line.chomp}\"\n"
(just added the quotes).


and lost the dump


And broke it.
  | blah = 42
  Hello. I'm an evil template. ", `rm -rf /`, "I advise against
running me as root.

Devin


Broke it? Nah, it was already 'broken'. And anyway, that's what I
wanted to do, and really would've 'broken' it to achieve that :-)


You broke it because " can't appear as-is in the file anymore.
(Which is likely what I want when I code C or something.)


fixed:

    harp:~ > cat in
    | x = 42

    using the -i switch i can interpolate x as #{ x }

    quote " works

    quote ' works


    harp:~ > r7 in

    using the -i switch i can interpolate x as #{ x }

    quote " works

    quote ' works


    harp:~ > r7 --interpolate in

    using the -i switch i can interpolate x as 42

    quote " works

    quote ' works


    harp:~ > cat r7
    #! /usr/bin/env ruby

    def macro(m, &b); Kernel::send('define_method', m){|*a| puts b.call(a)}; end

    d = $DEBUG || ENV['DEBUG'] || ARGV.delete('-d') || ARGV.delete('--debug')

    i = $INTERPOLATE || ENV['INTERPOLATE'] || ARGV.delete('-i') || ARGV.delete('--interpolate')

    h = '_' * 42

    m = d ? 'puts' : 'eval'

    s = ARGF.readlines.map{|l| l =~ %r/^\s*\|(.*)/ ? $1 : (i ? %Q(puts <<#{ h }\n#{ l.chomp }\n#{ h }) : %Q(puts #{ l.chomp.dump }))}

    send m, s.join("\n")


-a
--
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.

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