Minimalistic implementation of jsonpath, based on http://goessner.net/articles/JsonPath/.
But a better grammar definition is here.
https://godoc.org/github.com/gobs/jsonpath
Install:
go get github.com/gobs/jsonpath
And use it as a library:
package main
import "github.com/gobs/jsonpath"
import "fmt"
func main() {
jsonpathexpr := "$.items[3].stuff"
p := jsonpath.NewProcessor()
if !p.Parse(jsonpathexpr) {
return
}
// loaded from JSON
input := map[string]interface{}{
"name": "joe",
"items": []interface{}{
"zero",
"one",
"two",
map[string]interface{}{
"stuff": "three",
},
},
}
ret := p.Process(input, jsonpath.Default)
fmt.Println(ret)
}
Or install the command:
go get github.com/gobs/jsonpath/cmd/jsonpath
And run it:
jsonpath "$.items[3].stuff" input.json