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Full Discussion: Splitting comma separated values into an array
Top Forums Shell Programming and Scripting Splitting comma separated values into an array Post 76130 by tmarikle on Friday 24th of June 2005 04:50:33 PM
Old 06-24-2005
Splitting comma separated values into an array
I'm attempting to create a KSH array out of a string like this: ",,,value1,value2,,"

I have created the array but I only get two elements, one for value1 and one for value2.

I have ended up with something like this but I don't like it:
Code:
set -A JUNK
xx=0
for i in $(print ",,,value1,value2,,"  | nawk '{gsub(/,/," \n",$0);print}')
do
    print ".$i."
    JUNK[xx]=$i
    (( xx += 1 ))
done
for i in "${JUNK[@]}"
do
    print ".$i."
done

The results:
Code:
. .
. .
. .
.value1 .
.value2 .
. .
. .

If i leave out the space character before the newline in this gsub command:
Code:
gsub(/,/," \n",$0);

...I get this output:
Code:
.value1 .
.value2 .

I really don't want the spaces at the end of each string and I nead an array of every CSV field (even the empty values).

I have tried several approaches including changing IFS and looping through the fields but this doesn't seem to work at all.

What am I missing here?

Thomas
 

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LEARN ABOUT REDHAT

math

math(n) 							 Tcl Math Library							   math(n)

NAME

       math - Tcl Math Library

SYNOPSIS

       package require Tcl 8.2

       package require math ?1.2?

       ::math::cov value value ?value ...?

       ::math::integrate list of xy value pairs

       ::math::fibonacci n

       ::math::max value ?value ...?

       ::math::mean value ?value ...?

       ::math::min value ?value ...?

       ::math::prod value ?value ...?

       ::math::random ?value1? ?value2?

       ::math::sigma value value ?value ...?

       ::math::stats value value ?value ...?

       ::math::sum value ?value ...?

DESCRIPTION

       The math package provides utility math functions.

COMMANDS

       ::math::cov value value ?value ...?
	      Return the coefficient of variation expressed as percent of two or more numeric values.

       ::math::integrate list of xy value pairs
	      Return the area under a "curve" defined by a set of x,y pairs and the error bound as a list.

       ::math::fibonacci n
	      Return the n'th Fibonacci number.

       ::math::max value ?value ...?
	      Return the maximum of one or more numeric values.

       ::math::mean value ?value ...?
	      Return the mean, or "average" of one or more numeric values.

       ::math::min value ?value ...?
	      Return the minimum of one or more numeric values.

       ::math::prod value ?value ...?
	      Return the product of one or more numeric values.

       ::math::random ?value1? ?value2?
	      Return a random number.  If no arguments are given, the number is a floating point value between 0 and 1.  If one argument is given,
	      the number is an integer value between 0 and value1.  If two arguments are given, the number is an integer value between value1  and
	      value2.

       ::math::sigma value value ?value ...?
	      Return the population standard deviation of two or more numeric values.

       ::math::stats value value ?value ...?
	      Return the mean, standard deviation, and coefficient of variation as percent as a list.

       ::math::sum value ?value ...?
	      Return the sum of one or more numeric values.

KEYWORDS

       math, statistics

math									4.2								   math(n)
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