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Full Discussion: sed or awk editing help
Top Forums Shell Programming and Scripting sed or awk editing help Post 302467780 by Scrutinizer on Sunday 31st of October 2010 08:27:41 AM
Old 10-31-2010
I do not understand what you are referring to? A loop or running sed twice is necessary if you want to do a replace in two adjacent fields. This is because sed starts to do a replace at the character after where it stopped the last time. If you include the second comma in the pattern then the field that follows is not matched because the first comma was matched the previous time.

A couple of suggestions leave out the second comma, but then all whitespace gets deleted even in fields where the are other characters, which is not what the OP was asking.

I added the possibility of doing the replace not only in fields between comma's, but also for the two fields that have only one comma, namely the first and the last. Which is not precisely what the OP asked, but likely what he requires, since he speaks of fields separated by commas.

S.
Last edited by Scrutinizer; 10-31-2010 at 10:04 AM..
 

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LEARN ABOUT DEBIAN

debian::control::stanza::commaseparated

Debian::Control::Stanza::CommaSeparated(3pm)		User Contributed Perl Documentation	      Debian::Control::Stanza::CommaSeparated(3pm)

NAME

       Debian::Control::Stanza::CommaSeparated - comma separated debian/control field abstraction

SYNOPSYS

	   my $f = Debian::Control::Stanza::CommaSeparated->new(
	       'Joe M <joem@there.not>');
	   $f->add('"Smith, Agent" <asmith@hasyou.not>, Joe M <joem@there.not>');
	   print $f->as_string;
	       # 'Joe M <joem@there.not>, "Smith, Agent" <asmith@hasyou.not>'
	   print "$f";	   # the same
	   $f->sort;

DESCRIPTION

       Debian::Control::Stanza::CommaSeparated abstracts handling of comma-separated list of values, often found in debian/control file fields
       like Uploaders.	Note that the various dependency fields in debian/control also use comma-separated values, but the Debian::Dependencies
       class is more suitable for these as it is for example also capable of finding overlapping dependency declarations.

CONSTRUCTOR

       new (initial values)
	   The initial values list is parsed and may contain strings that are in fact comma-separated lists. These are split appropriately using
	   Text::ParseWords' quotewords routine.

METHODS

       as_string
	   Returns text representation of the list. A simple join of the elements by ", ".

	   The same function is used for overloading the stringification operation.

       add @items
	   Adds the ginen items to the list. Items that are already present are not added, keeping the list unique.

       sort
	   A handy method for sorting the list.

perl v5.14.2							    2012-01-15			      Debian::Control::Stanza::CommaSeparated(3pm)
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