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30 lines
716 B
Go
30 lines
716 B
Go
package jsonpath
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import (
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"encoding/json"
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"fmt"
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"strings"
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)
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func Eval(path string, b []byte) string {
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var object map[string]interface{}
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err := json.Unmarshal(b, &object)
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if err != nil {
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return ""
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}
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return walk(path, object)
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}
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func walk(path string, object map[string]interface{}) string {
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keys := strings.Split(path, ".")
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targetKey := keys[0]
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// if there's only one key and the target key is that key, then return its value
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if len(keys) == 1 {
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return fmt.Sprintf("%v", object[targetKey])
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}
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// if there's more than one key, then walk deeper
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if len(keys) > 0 {
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return walk(strings.Replace(path, fmt.Sprintf("%s.", targetKey), "", 1), object[targetKey].(map[string]interface{}))
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}
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return ""
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}
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