Uncomment

Uncomment is a simple command line tool to strip the comments out of relaxed JSON and output JSON as defined in RFC 7159, or in other words a JSON5 to JSON converter.

Usage

% cat infile.json
{
  // single line comments
  /*
   * or multi line comments
   */
  foo: "bar",
}

% cat infile.json | bin/uncomment
{"foo":"bar"}

% bin/uncomment infile.json
{"foo":"bar"}

% bin/uncomment -i infile.json -o outfile.json
outfile.json

% bin/uncomment -h
Usage of bin/uncomment:
  -i string
        Input file name
  -n    Do not print the trailing newline character.
  -o string
        Output file name

Useful tricks

# jq expects strict JSON
% cat relaxed.json | uncomment | jq .

# if another tool expects a strict JSON file
% command -c `uncomment -i relaxed.json -o strict.json`

Install

% go get github.com/mash/uncomment/cmd/uncomment

See also

https://json5.org/