Function findEndCursor

pkg/cmd/api/pagination.go:26–92

(r io.Reader)

}

func findEndCursor(r io.Reader) string {
	dec := json.NewDecoder(r)

	var idx int
	var stack []json.Delim
	var lastKey string
	var contextKey string

	var endCursor string
	var hasNextPage bool
	var foundEndCursor bool
	var foundNextPage bool

loop:
	for {
		t, err := dec.Token()
		if err == io.EOF {
			break
		}
		if err != nil {
			return ""
		}

		switch tt := t.(type) {
		case json.Delim:
			switch tt {
			case '{', '[':
				stack = append(stack, tt)
				contextKey = lastKey
				idx = 0
			case '}', ']':
				stack = stack[:len(stack)-1]
				contextKey = ""
				idx = 0
			}
		default:
			isKey := len(stack) > 0 && stack[len(stack)-1] == '{' && idx%2 == 0
			idx++

			switch tt := t.(type) {
			case string:
				if isKey {
					lastKey = tt
				} else if contextKey == "pageInfo" && lastKey == "endCursor" {
					endCursor = tt
					foundEndCursor = true
					if foundNextPage {
						break loop
					}
				}
			case bool:
				if contextKey == "pageInfo" && lastKey == "hasNextPage" {
					hasNextPage = tt
					foundNextPage = true
					if foundEndCursor {
						break loop
					}
				}