Separate string read from CSV into array is not working

Question

So I have my CSV file which looks like that:

repo_name1,path1,branch1 branch2

I read it with following code:

INPUT=repos.csv
OLDIFS=$IFS
IFS=','

[ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
while read repo_name local_path branches
do
    printf "\n"
    echo "Repository name: $repo_name"
    echo "Local path: $local_path"
    cd $local_path
    for branch in $branches
    do
        echo branch
        printf "\n"
    done
done < $INPUT
IFS=$OLDIFS

And I want to split branch1 and branch2 to an array in bash script.

I tried everything that I found on stackoverflow Loop through an array of strings in Bash?, Split string into an array in Bash, Reading a delimited string into an array in Bash , but nothing is working correctly and what I'm getting is array containing 1 element -> branch1 branch2

Any ideas what I'm doing wrong?

You have set IFS=',' and trying to read space-separated array — Digvijay S
– Digvijay S, Commented Jul 16, 2020 at 14:55
Try IFS=",$IFS" to add the comma but keep the usual delimiters. (and echo branch should probably be echo "$branch".) — Paul Hodges
– Paul Hodges, Commented Jul 16, 2020 at 15:10
for branch in $branches -- you are using IFS=, to split $branches, there are no commas in $branches so you only get one iteration through that loop. — glenn jackman
– glenn jackman, Commented Jul 16, 2020 at 15:31

Benjamin W. · Accepted Answer · 2020-07-16 15:15:04Z

1

You have to do this in two steps:

input=repos.csv

while IFS=, read -r repo path branchstr; do
    read -ra branches <<< "$branchstr"
    declare -p repo path branches
done < "$input"

resulting in

$ ./split
declare -- repo="repo_name1"
declare -- path="path1"
declare -a branches=([0]="branch1" [1]="branch2")

answered Jul 16, 2020 at 15:15

Benjamin W.

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2 Comments

cropyeee Over a year ago

Thank you, that worked for me. Can you tell me how to get rid of this "declare" output?

Benjamin W. Over a year ago

@cropyeee It's the output of the declare command – an easy way to see what a variable contains. Just replace the declare line with whatever you want to do with repo, path and branches.

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