package util import ( "encoding/json" "fmt" "io/ioutil" "strings" "github.com/ghodss/yaml" ) // Merges two maps together. Values from the second map override values in the first map. // The returned map is new if anything was changed. func Merge(in1 *map[string]interface{}, in2 *map[string]interface{}) *map[string]interface{} { if in1 == nil || len(*in1) == 0 { return in2 } if in2 == nil || len(*in2) == 0 { return in1 } new := make(map[string]interface{}) for k, v := range *in1 { new[k] = v } for k, v := range *in2 { new[k] = v } return &new } // Loads either a YAML or JSON file from the specified path and deserialises it into the provided interface. func LoadJsonOrYaml(filename string, addr interface{}) error { file, err := ioutil.ReadFile(filename) if err != nil { return err } if strings.HasSuffix(filename, "json") { err = json.Unmarshal(file, addr) } else if strings.HasSuffix(filename, "yaml") || strings.HasSuffix(filename, "yml") { err = yaml.Unmarshal(file, addr) } else { return fmt.Errorf("File format not supported. Must be JSON or YAML.") } return nil }