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json2go 
Package json2go provides utilities for creating go type representation from json inputs.
Online version
Simple web page with webassembly json2go parser
https://m-zajac.github.io/json2go
VSCode extension
CLI Installation
go get github.com/m-zajac/json2go/...
Usage
Json2go can be used as cli tool or as package.
CLI tools can be used directly to create go type from stdin data (see examples).
Package provides Parser, which can consume multiple jsons and outputs go type fitting all inputs (see examples and documentation). Example usage: read documents from document-oriented database and feed them too parser for go struct.
CLI usage examples
echo '{"x":1,"y":2}' | json2go
curl -s https://api.punkapi.com/v2/beers?page=1&per_page=5 | json2go
Check this one :)
cat data.json | json2go
Package usage examples
inputs := []string{
`{"x": 123, "y": "test", "z": false}`,
`{"a": 123, "x": 12.3, "y": true}`,
}
parser := json2go.NewJSONParser("Document")
for _, in := range inputs {
parser.FeedBytes([]byte(in))
}
res := parser.String()
fmt.Println(res)Example outputs
{
"line": {
"point1": {
"x": 12.1,
"y": 2
},
"point2": {
"x": 12.1,
"y": 2
}
}
}type Document struct {
Line struct {
Point1 Point `json:"point1"`
Point2 Point `json:"point2"`
} `json:"line"`
}
type Point struct {
X float64 `json:"x"`
Y int `json:"y"`
}[
{
"name": "water",
"type": "liquid",
"boiling_point": {
"units": "C",
"value": 100
}
},
{
"name": "oxygen",
"type": "gas",
"density": {
"units": "g/L",
"value": 1.429
}
},
{
"name": "carbon monoxide",
"type": "gas",
"dangerous": true,
"boiling_point": {
"units": "C",
"value": -191.5
},
"density": {
"units": "kg/m3",
"value": 789
}
}
]type Document []struct {
BoilingPoint *UnitsValue `json:"boiling_point,omitempty"`
Dangerous *bool `json:"dangerous,omitempty"`
Density *UnitsValue `json:"density,omitempty"`
Name string `json:"name"`
Type string `json:"type"`
}
type UnitsValue struct {
Units string `json:"units"`
Value float64 `json:"value"`
}