Does Go\'s `encoding/json` Package Offer a Way to Format JSON Output for Human Readability?

Jq Wrapper for Human-Readable JSON Output in Go

Question:

Is there an open-source Jq wrapper for Go that can convert machine-readable JSON output to human-readable format?

Answer:

Yes, the encoding/json package in Go provides built-in support for formatting JSON output.

Solution:

The following code demonstrates how to use json.MarshalIndent() to create indented JSON output:

import (
    "encoding/json"
    "fmt"
)

func main() {
    m := map[string]interface{}{"id": "uuid1", "name": "John Smith"}

    data, err := json.MarshalIndent(m, "", "  ")
    if err != nil {
        panic(err)
    }
    fmt.Println(string(data))
}

Output:

{
  "id": "uuid1",
  "name": "John Smith"
}

If you have an existing JSON string, you can use json.Indent() to format it:

import "encoding/json"

func main() {
    src := `{"id":"uuid1","name":"John Smith"}`

    dst := &bytes.Buffer{}
    if err := json.Indent(dst, []byte(src), "", "  "); err != nil {
        panic(err)
    }
    fmt.Println(dst.String())
}

Output:

{
  "id": "uuid1",
  "name": "John Smith"
}

Customization:

You can customize the indentation using the prefix and indent parameters of the indent functions. For example:

data, err := json.MarshalIndent(m, "+", "-")
if err != nil {
    panic(err)
}

Output:

{
+--"id": "uuid1",
+--"name": "John Smith"
+}

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