25 lines
676 B
Go
25 lines
676 B
Go
package scriptx
|
|
|
|
import (
|
|
"encoding/json"
|
|
"io"
|
|
)
|
|
|
|
// ToJSON is a filter function which converts each line from the source to a JSON structure.
|
|
// The result is a line-terminated list of JSON objects.
|
|
// The passed in function is to return a Go value that can be marshalled to JSON value.
|
|
func ToJSON(fn func(line string) any) func(r io.Reader, w io.Writer) error {
|
|
return func(r io.Reader, w io.Writer) error {
|
|
return eachLine(r, func(line string) (err error) {
|
|
jsonBytes, err := json.Marshal(fn(line))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if _, err = w.Write(jsonBytes); err != nil {
|
|
return err
|
|
}
|
|
_, err = w.Write([]byte{'\n'})
|
|
return err
|
|
})
|
|
}
|
|
}
|