vendor!

vendor/github.com/serenize/snaker/snaker.go

@@ -0,0 +1,123 @@
+// Package snaker provides methods to convert CamelCase names to snake_case and back.
+// It considers the list of allowed initialsms used by github.com/golang/lint/golint (e.g. ID or HTTP)
+package snaker
+
+import (
+	"strings"
+	"unicode"
+)
+
+// CamelToSnake converts a given string to snake case
+func CamelToSnake(s string) string {
+	var result string
+	var words []string
+	var lastPos int
+	rs := []rune(s)
+
+	for i := 0; i < len(rs); i++ {
+		if i > 0 && unicode.IsUpper(rs[i]) {
+			if initialism := startsWithInitialism(s[lastPos:]); initialism != "" {
+				words = append(words, initialism)
+
+				i += len(initialism) - 1
+				lastPos = i
+				continue
+			}
+
+			words = append(words, s[lastPos:i])
+			lastPos = i
+		}
+	}
+
+	// append the last word
+	if s[lastPos:] != "" {
+		words = append(words, s[lastPos:])
+	}
+
+	for k, word := range words {
+		if k > 0 {
+			result += "_"
+		}
+
+		result += strings.ToLower(word)
+	}
+
+	return result
+}
+
+// SnakeToCamel returns a string converted from snake case to uppercase
+func SnakeToCamel(s string) string {
+	var result string
+
+	words := strings.Split(s, "_")
+
+	for _, word := range words {
+		if upper := strings.ToUpper(word); commonInitialisms[upper] {
+			result += upper
+			continue
+		}
+
+		if len(word) > 0 {
+			w := []rune(word)
+			w[0] = unicode.ToUpper(w[0])
+			result += string(w)
+		}
+	}
+
+	return result
+}
+
+// startsWithInitialism returns the initialism if the given string begins with it
+func startsWithInitialism(s string) string {
+	var initialism string
+	// the longest initialism is 5 char, the shortest 2
+	for i := 1; i <= 5; i++ {
+		if len(s) > i-1 && commonInitialisms[s[:i]] {
+			initialism = s[:i]
+		}
+	}
+	return initialism
+}
+
+// commonInitialisms, taken from
+// https://github.com/golang/lint/blob/206c0f020eba0f7fbcfbc467a5eb808037df2ed6/lint.go#L731
+var commonInitialisms = map[string]bool{
+	"ACL":   true,
+	"API":   true,
+	"ASCII": true,
+	"CPU":   true,
+	"CSS":   true,
+	"DNS":   true,
+	"EOF":   true,
+	"GUID":  true,
+	"HTML":  true,
+	"HTTP":  true,
+	"HTTPS": true,
+	"ID":    true,
+	"IP":    true,
+	"JSON":  true,
+	"LHS":   true,
+	"QPS":   true,
+	"RAM":   true,
+	"RHS":   true,
+	"RPC":   true,
+	"SLA":   true,
+	"SMTP":  true,
+	"SQL":   true,
+	"SSH":   true,
+	"TCP":   true,
+	"TLS":   true,
+	"TTL":   true,
+	"UDP":   true,
+	"UI":    true,
+	"UID":   true,
+	"UUID":  true,
+	"URI":   true,
+	"URL":   true,
+	"UTF8":  true,
+	"VM":    true,
+	"XML":   true,
+	"XMPP":  true,
+	"XSRF":  true,
+	"XSS":   true,
+}