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package config
import (
"bytes"
"errors"
"fmt"
"strings"
"github.com/spf13/viper"
)
type Viper struct {
viper *viper.Viper
Path string
Prefix string
ReadInCfg []byte
}
// Inits config provider.
func (v *Viper) Init() error {
v.viper = viper.New()
// read in environment variables that match
v.viper.AutomaticEnv()
if v.Prefix == "" {
return errors.New("prefix should be set")
}
v.viper.SetEnvPrefix(v.Prefix)
if v.Path == "" {
return errors.New("path should be set")
}
v.viper.SetConfigFile(v.Path)
v.viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
if v.ReadInCfg != nil {
return v.viper.ReadConfig(bytes.NewBuffer(v.ReadInCfg))
}
return v.viper.ReadInConfig()
}
// Overwrite overwrites existing config with provided values
func (v *Viper) Overwrite(values map[string]interface{}) error {
if len(values) != 0 {
for key, value := range values {
v.viper.Set(key, value)
}
}
return nil
}
// UnmarshalKey reads configuration section into configuration object.
func (v *Viper) UnmarshalKey(name string, out interface{}) error {
err := v.viper.UnmarshalKey(name, &out)
if err != nil {
return err
}
return nil
}
// Get raw config in a form of config section.
func (v *Viper) Get(name string) interface{} {
return v.viper.Get(name)
}
// Has checks if config section exists.
func (v *Viper) Has(name string) bool {
return v.viper.IsSet(name)
}
func parseValue(value string) string {
escape := []rune(value)[0]
if escape == '"' || escape == '\'' || escape == '`' {
value = strings.Trim(value, string(escape))
value = strings.ReplaceAll(value, fmt.Sprintf("\\%s", string(escape)), string(escape))
}
return value
}
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