Support piping into set

[nodesocket]

How to support piping into set?

echo "{}" | jsonlite set

[evuez]

A simple while read...done should work:

function jsonlite_set {
    while read value; do
        echo "$value" | json_reformat > "$JSONLITE_PATH/$uuid"
    done;
}
echo '{"a": "b"}' | jsonlite_set

[nodesocket]

Seems like changing the set command to start with:

local value="$1"

if [[ -z "$value" ]]; then
  while read -r piped; do
    value=$piped
  done;
fi

if [[ -z "$value" ]]; then
  echo "Missing required argument json document" 1>&2
  exit 4
fi

Seems to work. Can you think of a better way to write this?

[evuez]

The problem here is that (haven't tested it, correct me if I'm wrong) if you do something like for i in $(seq 1 3); do echo '{"a": "b"}'; done | jsonlite set you'll only get the last echo.
Also, with a cat file.json | jsonlite set you would get only the last line of the file in $value.
Maybe a better way would be to do value+="$piped" so that you store the whole file. But then you would get {"a": "b"}{"a": "b"}{"a": "b"} with the first example... I don't know what's best...

[nodesocket]

I actually got something working:

if [[ -z "$value" && ! -t 0 ]]; then
    while read -r piped; do
      value+=$piped
    done;
fi

The trick was using += and also checking ! -t 0 which checks if we are piping.

[evuez]

That's nice, I didn't know about the ! -t 0!