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Re^5: 'perl -e' and '__DATA__' What's wrong?

by duff (Vicar)
on Dec 07, 2007 at 14:53 UTC ( #655662=note: print w/ replies, xml ) Need Help??


in reply to Re^4: 'perl -e' and '__DATA__' What's wrong?
in thread 'perl -e' and '__DATA__' What's wrong?

I don't get it. Are you saying that there's still a problem here? I think it's been made clear that __DATA__ isn't available from a -e script and why. If you need some extra data, just store it in a scalar or an array and use that (why bother with reading another filehandle?).


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Re^6: 'perl -e' and '__DATA__' What's wrong?
by Skeeve (Vicar) on Dec 07, 2007 at 15:15 UTC

    okay then...

    Just again in slow motion...

    My script is part of an AppleScript.

    The perl script needs:

    1. STDIN or Filenames given on Commandline, read with the magic <>
    2. __DATA__

    Why _DATA__? Because I want to feed it some stuff whose content I don't know. DATA is a quite safe way for doing it, because I don't need to worry about any "dangerous" characters in it.

    Now I use a variable assignment, but i must make sure that the END marker isn't used in the data I want to store.

    So is there a problem?

    Yes, but not a big one.


    s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
    +.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

      Why not a here doc with a terminator that is 99% sure not to show up in your data? like 123456789_987654321 or something.


      ___________
      Eric Hodges
      STDIN or Filenames given on Commandline, read with the magic <>

      Nope. All that's on the command line isn't read via <>, it is in @ARGV.

      Why _DATA__? Because I want to feed it some stuff whose content I don't know.

      If you use the __DATA__ token in a perl script, you must know what you put after that beforehand, which is quite the same as with a here-document in a -e script. Well, of course you could append something to a script, and invoke it later, which would be a very odd way to use the __DATA__ token.

      But you could feed your script something with a command line switch and use e.g. Getopt::Long:

      perl -MGetopt::Long -e 'use Frob; GetOptions("foo=s",$foo); frobnicate +($foo,$_) while <>' --foo="Some additional data you might pass also a +s a variable"

      --shmem

      _($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                                    /\_¯/(q    /
      ----------------------------  \__(m.====·.(_("always off the crowd"))."·
      ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

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