Newsgroups: comp.lang.perl
Path: utzoo!utgpu!watserv1!watdragon!rose!ccplumb
From: ccplumb@rose.uwaterloo.ca (Colin Plumb)
Subject: Re: Help with split, replace and number formats.
Message-ID: <1991Feb15.225320.1069@watdragon.waterloo.edu>
Sender: daemon@watdragon.waterloo.edu (Owner of Many System Processes)
Organization: University of Waterloo
References: <1991Jan29.030541.46@eagle.inesc.pt>
Date: Fri, 15 Feb 1991 22:53:20 GMT
Lines: 48

jmc@eagle.inesc.pt (Miguel Casteleiro) wrote:
>Hi there!
>
>I have some problems that I need to solve so I can finish some
>perl scripts.
>
>1)  I need to split the following line:
>
>    "This is a line ( test,with ugly typing."
>
>into the array:
>
>    ('"This','is','a','line','(','test,','with','ugly','typing."')
>
>Please note the punctuation characters.
>Is there a split pattern to do this?

Well, it depends on details, but defining a word as \w+,
whitespace as \s+, and punctuation as [^\w\s]+, and
assuming you want to split after punctuation and before
words, even if there is no explicit space, then just add
one and split as usual:

s/([^\w\s]+)(\w)/\1 \2/g
split;

>2)  I need to replace the word: 'teste'
>                   by the word: 'aebtecd'
>
>In this replace operation the character 't' gets replaced by 'a'
>and 'c' is appended to the word, and the character 's' is replaced
>by 'b' and 'd' is appended to the word.
>I need this strange replace to use a 7-bit sort to sort 8-bit
>(ISO-8859-1) text.
>What I need is to translate some characters by some others, and
>for each character translated I need to append a character to the
>string (something like: tr/ts/ab/cd/ :-).
>Is there an easy way to do this?

Yes.
$suffix = $_;
$suffix =~ tr/ts//cd;	# delete anything other then t and d
#                 ^^ This 'cd' has *nothing* to do with the one below!
$suffix =~ tr/ts/cd/;	# map t and s to c and d
tr/ts/ab/;
$_ .= $suffix;
-- 
	-Colin