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Re: line ending troubles

by bobf (Monsignor)
on Dec 21, 2009 at 23:51 UTC ( #813773=note: print w/replies, xml ) Need Help??

in reply to line ending troubles

I ran into a similar problem a while ago. You may find the solutions presented in Newlines: reading files that were created on other platforms to be helpful. The two main options that I considered were:

  1. Use a regex to match the newline character(s) in the file. I think this would require slurping the whole file and then doing something like if( $file =~ m/\015$/ ) (which assumes the file will end with a newline) or if( $file =~ m/\015(?!\012)/ ) (which doesn't), setting $/ according to what matched, and re-reading the file line-by-line. If the file contains different types of newlines this will not work.
  2. Preprocess the input file to convert all newline characters to the current system's newline character.
    $file =~ s[(\015)?\012(?!\015)][\n]g; $file =~ s[(\012)?\015(?!\012)][\n]g;
I used the latter option. It worked beautifully.

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[Corion]: choroboa: A good choice! ;)
[Corion]: I still somewhat wonder if it were worthwhile to replace init / systemd by make with a simple? Makefile listing the dependencies ...
[Discipulus]: i have a different opinion: automation is always worth: first i can use Perl (and this is good), then later you can reuse parts to automate others tasks. My $boss everytime say:'how much time you spend doing this?' So generally i present a perl solution
[Corion]: Discipulus: Yes, but the chart gives some limits on whether it's really worth spending time for saving your time. If you gain enjoyment, automating is still great, but it doesn't save time ;)
[Discipulus]: Corion are you would able to realize such thing? O_O
[Corion]: In the same vein I have a script that automates Firefox to enter some data into another system. It's not faster than the people using the script if they were to do it manually, but they prefer not having to check the data and not having typos when ...
[Corion]: ... entering the data

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