how to concat jq paths in each array-CodePudding

Here is the json paths which ends with 'headline' I have got:

jq -c 'paths | select(.[-1] == "headline")' news.json

["data","legacyCollection","collectionsPage","stream","edges",0,"node","headline"]
["data","legacyCollection","collectionsPage","stream","edges",1,"node","headline"]
["data","legacyCollection","collectionsPage","stream","edges",2,"node","headline"]

How can I get one step further which is concat all elements in a single path. to turn my output from:

["data","legacyCollection","collectionsPage","stream","edges",2,"node","headline"]

'.data.legacyCollection.collectionsPage.stream.edges[2].node'

CodePudding user response：

Remove the last element, prepend a dot to strings, wrap numbers in brackets, and join the array:

.[:-1] | map(strings |= ".\(.)" | numbers |= "[\(.)]") | join("")

".data.legacyCollection.collectionsPage.stream.edges[0].node"
".data.legacyCollection.collectionsPage.stream.edges[1].node"
".data.legacyCollection.collectionsPage.stream.edges[2].node"

Demo