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@bruno-brant

bruno-brant/json.js

Created October 20, 2019 20:15
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Get field from json
Raw
json.js
// Small tool to obtain a field from a JSON file
// Read the JSON from STDIN
var buff = "";
if (process.argv.length <= 1) {
console.error("Must inform the field to be extracted");
process.exit(-1);
}
const field = process.argv[2];
process
.stdin
.on('data', data => { buff
buff += data;
})
.on('end', () => {
const json = JSON.parse(buff);
if (json[field] === undefined) {
console.error("ERROR: field is undefined");
process.exit(-1);
}
console.log(json[field]);
});
@bruno-brant
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Very simple utility, lacking a lot of error handling and such, just to parse a JSON from STDIN and output a certain field

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