Function funcMap

pkg/engine/funcs.go:45–81

funcMap returns a mapping of all of the functions that Engine has. Because some functions are late-bound (e.g. contain context-sensitive data), the functions may not all perform identically outside of an Engine as they will inside of an Engine. Known late-bound functions: - "include" - "tpl" The

()

// These are late-bound in Engine.Render().  The
// version included in the FuncMap is a placeholder.
func funcMap() template.FuncMap {
	f := sprig.TxtFuncMap()
	delete(f, "env")
	delete(f, "expandenv")

	// Add some extra functionality
	extra := template.FuncMap{
		"toToml":        toTOML,
		"mustToToml":    mustToTOML,
		"fromToml":      fromTOML,
		"toYaml":        toYAML,
		"mustToYaml":    mustToYAML,
		"toYamlPretty":  toYAMLPretty,
		"fromYaml":      fromYAML,
		"fromYamlArray": fromYAMLArray,
		"toJson":        toJSON,
		"mustToJson":    mustToJSON,
		"fromJson":      fromJSON,
		"fromJsonArray": fromJSONArray,

		// This is a placeholder for the "include" function, which is
		// late-bound to a template. By declaring it here, we preserve the
		// integrity of the linter.
		"include":  func(string, any) string { return "not implemented" },
		"tpl":      func(string, any) any { return "not implemented" },
		"required": func(string, any) (any, error) { return "not implemented", nil },
		// Provide a placeholder for the "lookup" function, which requires a kubernetes
		// connection.
		"lookup": func(string, string, string, string) (map[string]any, error) {
			return map[string]any{}, nil
		},
	}

	maps.Copy(f, extra)

	return f
}

// toYAML takes an interface, marshals it to yaml, and returns a string. It will
// always return a string, even on marshal error (empty string).