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horttanainen/pretty-print-json-extended.sh

Last active April 14, 2019 12:20
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Prettify and transform json from command line
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pretty-print-json-extended.sh
#!/usr/bin/env bash
JS='
var toEval = process.argv[1];
process.stdin.resume();
process.stdin.setEncoding("utf8");
var json = "";
process.stdin.on("data", function(buf) {
json += buf;
});
process.stdin.on("end", function() {
const obj = JSON.parse(json);
const modifiedJObj = eval(toEval);
console.log(JSON.stringify(modifiedJObj, null, 2));
});
'
node -e "$JS" -- "$1"
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horttanainen commented Apr 13, 2019 •
edited
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Add the snippet in your .bashrc

alias pjsone='sh ~/.scripts/pretty-print-json-extended.sh'

Try it out:

echo '{"a": { "b": [1, 2, 3]}}' | pjsone "obj.a.b[1]"
echo '{"a": { "b": [1, 2, 3]}}' | pjsone "obj.a.b.map(item => item * 2)"

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horttanainen commented Apr 13, 2019 •
edited
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You can use other packages as well (if you install them alongside the script):

echo '{"a": { "b": [1, 2, 3]}}' | pjsone "var R = require('ramda'); R.zip(obj.a.b, obj.a.b)"

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