kubernetes/third_party/forked/golang/expansion/expand.go

const operator …

const referenceOpener …

const referenceCloser …

// syntaxWrap returns the input string wrapped by the expansion syntax.
func syntaxWrap(input string) string { … }

// MappingFuncFor returns a mapping function for use with Expand that
// implements the expansion semantics defined in the expansion spec; it
// returns the input string wrapped in the expansion syntax if no mapping
// for the input is found.
func MappingFuncFor(context ...map[string]string) func(string) string { … }

// Expand replaces variable references in the input string according to
// the expansion spec using the given mapping function to resolve the
// values of variables.
func Expand(input string, mapping func(string) string) string { … }

// tryReadVariableName attempts to read a variable name from the input
// string and returns the content read from the input, whether that content
// represents a variable name to perform mapping on, and the number of bytes
// consumed in the input string.
//
// The input string is assumed not to contain the initial operator.
func tryReadVariableName(input string) (string, bool, int) { … }