multiconfig

type DefaultLoader struct {
	Loader
	Validator
}

type EnvironmentLoader struct {
	// Prefix prepends given string to every environment variable
	// {STRUCTNAME}_FIELDNAME will be {PREFIX}_FIELDNAME
	Prefix string

	// CamelCase adds a seperator for field names in camelcase form. A
	// fieldname of "AccessKey" would generate a environment name of
	// "STRUCTNAME_ACCESSKEY". If CamelCase is enabled, the environment name
	// will be generated in the form of "STRUCTNAME_ACCESS_KEY"
	CamelCase bool
}

type FlagLoader struct {
	// Prefix prepends the prefix to each flag name i.e:
	// --foo is converted to --prefix-foo.
	// --foo-bar is converted to --prefix-foo-bar.
	Prefix string

	// Flatten doesn't add prefixes for nested structs. So previously if we had
	// a nested struct `type T struct{Name struct{ ...}}`, this would generate
	// --name-foo, --name-bar, etc. When Flatten is enabled, the flags will be
	// flattend to the form: --foo, --bar, etc.. Panics if the nested structs
	// has a duplicate field name in the root level of the struct (outer
	// struct). Use this option only if you know what you do.
	Flatten bool

	// CamelCase adds a seperator for field names in camelcase form. A
	// fieldname of "AccessKey" would generate a flag name "--accesskey". If
	// CamelCase is enabled, the flag name will be generated in the form of
	// "--access-key"
	CamelCase bool

	// EnvPrefix is just a placeholder to print the correct usages when an
	// EnvLoader is used
	EnvPrefix string

	// Args defines a custom argument list. If nil, os.Args[1:] is used.
	Args []string
}

type JSONLoader struct {
	Path   string
	Reader io.Reader
}

type Loader interface {
	// Load loads the source into the config defined by struct s
	Load(s interface{}) error
}

type RequiredValidator struct {
	//  TagName holds the validator tag name. The default is "required"
	TagName string

	// TagValue holds the expected value of the validator. The default is "true"
	TagValue string
}

type TOMLLoader struct {
	Path   string
	Reader io.Reader
}

type TagLoader struct {
	// DefaultTagName is the default tag name for struct fields to define
	// default values for a field. Example:
	//
	//   // Field's default value is "koding".
	//   Name string `default:"koding"`
	//
	// The default value is "default" if it's not set explicitly.
	DefaultTagName string
}

type Validator interface {
	// Validate validates the config struct
	Validate(s interface{}) error
}

type YAMLLoader struct {
	Path   string
	Reader io.Reader
}