jq to replace array key values from file - json

Question

I have a json file with this data:
{
"data": [
{
"name": "table",
"values": [
"This is old data",
"that needs to be",
"replaced."
]
}
]
}
But my challege here is I need to replace that values array with words in a text or csv file:
this
this
this
is
is
an
an
array
My output needs to have (although I could probably get away with the words all on one line...):
"values": [
"this this this",
"is is",
"an an",
"array"
],
Is this possible with only jq? Or would I have to get awk to help out?
I already started down the awk road with:
awk -F, 'BEGIN{ORS=" "; {print "["}} {print $2} END{{print "]"}}' filename
But I know there is still some work here...
And then I came across jq -Rn inputs. But I haven't figured out how or if I can get the desired result.
Thanks for any pointers.

Answer 1

Assuming you have a raw ASCII text file named file and an input JSON file, you could do
jq --rawfile txt file '.data[].values |= ( $txt | split("\n")[:-1] | group_by(.) | map(join(" ")) )' json
produces
{
"data": [
{
"name": "table",
"values": [
"an an",
"array",
"is is",
"this this this"
]
}
]
}

Answer 2

You can use jq and awk.
Given:
$ cat file
{
"data": [
{
"name": "table",
"values": [
"This is old data",
"that needs to be",
"replaced."
]
}
]
}
$ cat replacement
this
this
this
is
is
an
an
array
First create a string for the replacement array (awk is easy to use here):
ins=$(awk '!s {s=last=$1; next}
$1==last{s=s " " $1; next}
{print s; s=last=$1}
END{print s}' replacement | tr '\n' '\t')
Then use jq to insert into the JSON:
jq --rawfile txt <(echo "$ins") '.data[].values |= ( $txt | split("\t")[:-1] )' file
{
"data": [
{
"name": "table",
"values": [
"this this this",
"is is",
"an an",
"array"
]
}
]
}
You can also use ruby to process both files:
ruby -r json -e '
BEGIN{ ar=File.readlines(ARGV[0])
.map{|l| l.rstrip}
.group_by{|e| e}
.values
.map{|v| v.join(" ")}
j=JSON.parse(File.read(ARGV[1]))
}
j["data"][0]["values"]=ar
puts JSON.pretty_generate(j)' txt file
# same output...