Function getKey

accessors.go:83–112

getKey returns the key which is held in s by two brackets. It also returns the next selector.

(s string)

// getKey returns the key which is held in s by two brackets.
// It also returns the next selector.
func getKey(s string) (string, string) {
	selSegs := strings.SplitN(s, PathSeparator, 2)
	thisSel := selSegs[0]
	nextSel := ""

	if len(selSegs) > 1 {
		nextSel = selSegs[1]
	}

	mapMatches := mapAccessRegex.FindStringSubmatch(s)
	if len(mapMatches) > 0 {
		if _, err := strconv.Atoi(mapMatches[2]); err != nil {
			thisSel = mapMatches[1]
			nextSel = "[" + mapMatches[2] + "]" + mapMatches[3]

			if thisSel == "" {
				thisSel = mapMatches[2]
				nextSel = mapMatches[3]
			}

			if nextSel == "" {
				selSegs = []string{"", ""}
			} else if nextSel[0] == '.' {
				nextSel = nextSel[1:]
			}
		}
	}

	return thisSel, nextSel
}

// access accesses the object using the selector and performs the
// appropriate action.