mirror of https://github.com/goccy/go-json.git
74 lines
2.3 KiB
Go
74 lines
2.3 KiB
Go
package json
|
|
|
|
import (
|
|
"reflect"
|
|
|
|
"github.com/goccy/go-json/internal/decoder"
|
|
)
|
|
|
|
// CreatePath creates JSON Path.
|
|
//
|
|
// JSON Path rule
|
|
// $ : root object or element. The JSON Path format must start with this operator, which refers to the outermost level of the JSON-formatted string.
|
|
// . : child operator. You can identify child values using dot-notation.
|
|
// .. : recursive descent.
|
|
// [] : subscript operator. If the JSON object is an array, you can use brackets to specify the array index.
|
|
// [*] : all objects/elements for array.
|
|
//
|
|
// Reserved words must be properly escaped when included in Path.
|
|
// Escale Rule
|
|
// single quote style escape: e.g.) `$['a.b'].c`
|
|
// double quote style escape: e.g.) `$."a.b".c`
|
|
func CreatePath(p string) (*Path, error) {
|
|
path, err := decoder.PathString(p).Build()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &Path{path: path}, nil
|
|
}
|
|
|
|
// Path represents JSON Path.
|
|
type Path struct {
|
|
path *decoder.Path
|
|
}
|
|
|
|
// UsedSingleQuotePathSelector whether single quote-based escaping was done when building the JSON Path.
|
|
func (p *Path) UsedSingleQuotePathSelector() bool {
|
|
return p.path.SingleQuotePathSelector
|
|
}
|
|
|
|
// UsedSingleQuotePathSelector whether double quote-based escaping was done when building the JSON Path.
|
|
func (p *Path) UsedDoubleQuotePathSelector() bool {
|
|
return p.path.DoubleQuotePathSelector
|
|
}
|
|
|
|
// Extract extracts a specific JSON string.
|
|
func (p *Path) Extract(data []byte, optFuncs ...DecodeOptionFunc) ([][]byte, error) {
|
|
return extractFromPath(p, data, optFuncs...)
|
|
}
|
|
|
|
// Unmarshal extract and decode the value of the part corresponding to JSON Path from the input data.
|
|
func (p *Path) Unmarshal(data []byte, v interface{}, optFuncs ...DecodeOptionFunc) error {
|
|
contents, err := extractFromPath(p, data, optFuncs...)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
results := make([]interface{}, 0, len(contents))
|
|
for _, content := range contents {
|
|
var result interface{}
|
|
if err := Unmarshal(content, &result); err != nil {
|
|
return err
|
|
}
|
|
results = append(results, result)
|
|
}
|
|
if err := decoder.AssignValue(reflect.ValueOf(results), reflect.ValueOf(v)); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Get extract and substitute the value of the part corresponding to JSON Path from the input value.
|
|
func (p *Path) Get(src, dst interface{}) error {
|
|
return p.path.Get(reflect.ValueOf(src), reflect.ValueOf(dst))
|
|
}
|