interpolation

package

v20.10.3+incompatible Latest Latest Go to latest Published: Jan 28, 2021 License: Apache-2.0 Imports: 4 Imported by: 0

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

git.1-hub.cn/docker/cli

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
func Interpolate(config map[string]interface{}, opts Options) (map[string]interface{}, error)
type Cast
type LookupValue
type Options
type Path
- func NewPath(items ...string) Path
- func (p Path) Next(part string) Path

Constants ¶

View Source

const PathMatchAll = "*"

PathMatchAll is a token used as part of a Path to match any key at that level in the nested structure

View Source

const PathMatchList = "[]"

PathMatchList is a token used as part of a Path to match items in a list

Variables ¶

This section is empty.

Functions ¶

func Interpolate ¶

func Interpolate(config map[string]interface{}, opts Options) (map[string]interface{}, error)

Interpolate replaces variables in a string with the values from a mapping

Types ¶

type Cast ¶

type Cast func(value string) (interface{}, error)

Cast a value to a new type, or return an error if the value can't be cast

type LookupValue ¶

type LookupValue func(key string) (string, bool)

LookupValue is a function which maps from variable names to values. Returns the value as a string and a bool indicating whether the value is present, to distinguish between an empty string and the absence of a value.

type Options ¶

type Options struct {
	// LookupValue from a key
	LookupValue LookupValue
	// TypeCastMapping maps key paths to functions to cast to a type
	TypeCastMapping map[Path]Cast
	// Substitution function to use
	Substitute func(string, template.Mapping) (string, error)
}

Options supported by Interpolate

type Path ¶

type Path string

Path is a dotted path of keys to a value in a nested mapping structure. A * section in a path will match any key in the mapping structure.

func NewPath ¶

func NewPath(items ...string) Path

NewPath returns a new Path

func (Path) Next ¶

func (p Path) Next(part string) Path

Next returns a new path by append part to the current path

Source Files ¶

interpolation.go

?	: This menu
/	: Search site
f or F	: Jump to
y or Y	: Canonical URL