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https://github.com/elgs/Gojq
JSON query in Golang
https://github.com/elgs/Gojq
Last synced: about 2 months ago
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JSON query in Golang
- Host: GitHub
- URL: https://github.com/elgs/Gojq
- Owner: elgs
- License: other
- Created: 2015-12-30T09:02:13.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2023-06-28T21:48:30.000Z (about 1 year ago)
- Last Synced: 2024-06-18T13:54:18.612Z (3 months ago)
- Language: Go
- Size: 15.6 KB
- Stars: 191
- Watchers: 6
- Forks: 23
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# gojq
JSON query in Golang.
## Install
`go get -u github.com/elgs/gojq`
This library serves three purposes:
* makes parsing JSON configuration file much easier
* enables JSON expression evaluation
* reduces the pain of type assertion parsing JSON
## Query from JSON Object
```go
package main
import (
"fmt"
"github.com/elgs/gojq"
)
var jsonObj = `
{
"name": "sam",
"gender": "m",
"pet": null,
"skills": [
"Eating",
"Sleeping",
"Crawling"
],
"hello.world":true
}
`
func main() {
parser, err := gojq.NewStringQuery(jsonObj)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(parser.Query("name")) // sam
fmt.Println(parser.Query("gender")) // m
fmt.Println(parser.Query("skills.[1]")) // Sleeping
fmt.Println(parser.Query("hello")) // hello does not exist.
fmt.Println(parser.Query("pet")) //
fmt.Println(parser.Query(".")) // map[name:sam gender:m pet: skills:[Eating Sleeping Crawling] hello.world:true]
fmt.Println(parser.Query("'hello.world'")) // true
}
```
## Query from JSON Array
```go
package main
import (
"fmt"
"github.com/elgs/gojq"
)
var jsonArray = `
[
{
"name": "elgs",
"gender": "m",
"skills": [
"Golang",
"Java",
"C"
]
},
{
"name": "enny",
"gender": "f",
"skills": [
"IC",
"Electric design",
"Verification"
]
},
{
"name": "sam",
"gender": "m",
"pet": null,
"skills": [
"Eating",
"Sleeping",
"Crawling"
]
}
]
`
func main() {
parser, err := gojq.NewStringQuery(jsonArray)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(parser.Query("[0].name")) // elgs
fmt.Println(parser.Query("[1].gender")) // f
fmt.Println(parser.Query("[2].skills.[1]")) // Sleeping
fmt.Println(parser.Query("[2].hello")) // hello does not exist.
fmt.Println(parser.Query("[2].pet")) //
}
```
## Nested Query
```go
package main
import (
"fmt"
"github.com/elgs/gojq"
)
var jsonArray = `
[
{
"name": "elgs",
"gender": "m",
"skills": [
"Golang",
"Java",
"C"
]
},
{
"name": "enny",
"gender": "f",
"skills": [
"IC",
"Electric design",
"Verification"
]
},
{
"name": "sam",
"gender": "m",
"pet": null,
"skills": [
"Eating",
"Sleeping",
"Crawling"
]
}
]
`
func main() {
parser, err := gojq.NewStringQuery(jsonArray)
if err != nil {
fmt.Println(err)
return
}
samSkills, err := parser.Query("[2].skills")
fmt.Println(samSkills, err) //[Eating Sleeping Crawling]
samSkillParser := gojq.NewQuery(samSkills)
fmt.Println(samSkillParser.Query("[1]")) //Sleeping
}
```