--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/github.com/pelletier/go-toml/keysparsing.go Sat Sep 29 18:09:54 2018 +0200
@@ -0,0 +1,85 @@
+// Parsing keys handling both bare and quoted keys.
+
+package toml
+
+import (
+ "bytes"
+ "errors"
+ "fmt"
+ "unicode"
+)
+
+// Convert the bare key group string to an array.
+// The input supports double quotation to allow "." inside the key name,
+// but escape sequences are not supported. Lexers must unescape them beforehand.
+func parseKey(key string) ([]string, error) {
+ groups := []string{}
+ var buffer bytes.Buffer
+ inQuotes := false
+ wasInQuotes := false
+ ignoreSpace := true
+ expectDot := false
+
+ for _, char := range key {
+ if ignoreSpace {
+ if char == ' ' {
+ continue
+ }
+ ignoreSpace = false
+ }
+ switch char {
+ case '"':
+ if inQuotes {
+ groups = append(groups, buffer.String())
+ buffer.Reset()
+ wasInQuotes = true
+ }
+ inQuotes = !inQuotes
+ expectDot = false
+ case '.':
+ if inQuotes {
+ buffer.WriteRune(char)
+ } else {
+ if !wasInQuotes {
+ if buffer.Len() == 0 {
+ return nil, errors.New("empty table key")
+ }
+ groups = append(groups, buffer.String())
+ buffer.Reset()
+ }
+ ignoreSpace = true
+ expectDot = false
+ wasInQuotes = false
+ }
+ case ' ':
+ if inQuotes {
+ buffer.WriteRune(char)
+ } else {
+ expectDot = true
+ }
+ default:
+ if !inQuotes && !isValidBareChar(char) {
+ return nil, fmt.Errorf("invalid bare character: %c", char)
+ }
+ if !inQuotes && expectDot {
+ return nil, errors.New("what?")
+ }
+ buffer.WriteRune(char)
+ expectDot = false
+ }
+ }
+ if inQuotes {
+ return nil, errors.New("mismatched quotes")
+ }
+ if buffer.Len() > 0 {
+ groups = append(groups, buffer.String())
+ }
+ if len(groups) == 0 {
+ return nil, errors.New("empty key")
+ }
+ return groups, nil
+}
+
+func isValidBareChar(r rune) bool {
+ return isAlphanumeric(r) || r == '-' || unicode.IsNumber(r)
+}