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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
}
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