Re: [MacPerl-AnyPerl] Converting CR's LF's etc.

[jason white <jason.white@usu.edu>]

>At 20.08 -0400 1999.04.09, jason white wrote:
>>Pretty low level question here...
>>Any one got a good pointer on how to convert Carriage returns/linefeeds
>>etc.  I just need to be able to capture them and then I'll convert them
>>into <br> tags .  Basically I want it to take the cr , lf, or crlf and make
>>it  like the user put it in (if they put a hard return).  I know the ascii
>>values are 10 and 13.  I've done this with other scripting languages
>>(ToolBook, HyperCard etc.) but not in Perl yet.  Is it just a matter of
>>converting Hex values?
>
>Well, it depends.  The basic answer is:
>
>  $text =~ s/\015/\012/g;  # i like octals :)
>  $text =~ s/\x0D/\x0A/g;  # same thing
>
>But really, if you need more than that, I would need to know exactly what
>you want to do, like:
>
>* change CR to LF
>* change CR or CRLF to LF
>* change LF or CRLF to CR
>* change any of CR, LF, or CRLF to local newline
>
>etc.  I imagine you might want the latter, and it gets to be more
>difficult, because first you have to identify what the newline characters
>are.  I would do something like:
>
>  my($nl) = ($text =~ /(\015?\012|\015)$/);  # get which newline used
>  $text =~ s/$nl/\n/g;  # change all "newlines" to local newline, \n
>
>--
basically, I want to turn any new line...(CR for Mac, CRLF for PC, LF for
UNIX/LINUX) and turn it into a <br> tag in my parsing.  The simple

s/\n\r/<br>\n/g;

seems to work. Tried it on both PC and Mac.  Don't have a Unix Box to check
it at the moment, but would assume it would work equally as well.

I want to venture into the octal/hex world but have only tinkered. I like
to at lest semi-understand it if I code it, and I don't even have time for
that partial understanding at the moment.  Thanks for all the help.

Jason

-------------------
Jason White
<Insert Title Here>
jason.white@usu.edu



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