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file.go
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/
file.go
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package config
import (
"errors"
"os"
)
// nolint:gofumpt
const perm = 0600
// ErrMissingConfigFile for config.
var ErrMissingConfigFile = errors.New("missing config file")
// File config location.
func File() (string, error) {
return FileFromEnv("CONFIG_FILE")
}
// FileFromEnv location.
func FileFromEnv(env string) (string, error) {
configFile := os.Getenv(env)
if configFile == "" {
return "", ErrMissingConfigFile
}
return configFile, nil
}
// ReadFile from config location.
func ReadFile() ([]byte, error) {
configFile, err := File()
if err != nil {
return nil, err
}
return os.ReadFile(configFile)
}
// WriteFileToEnv location.
func WriteFileToEnv(env string, data []byte) error {
configFile, err := FileFromEnv(env)
if err != nil {
return err
}
return os.WriteFile(configFile, data, perm)
}