Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

utils/bytes.go

@@ -0,0 +1,69 @@
+// ⚡️ Fiber is an Express inspired web framework written in Go with ☕️
+// 🤖 Github Repository: https://github.com/gofiber/fiber
+// 📌 API Documentation: https://docs.gofiber.io
+
+package utils
+
+// ToLowerBytes converts ascii slice to lower-case in-place.
+func ToLowerBytes(b []byte) []byte {
+	for i := 0; i < len(b); i++ {
+		b[i] = toLowerTable[b[i]]
+	}
+	return b
+}
+
+// ToUpperBytes converts ascii slice to upper-case in-place.
+func ToUpperBytes(b []byte) []byte {
+	for i := 0; i < len(b); i++ {
+		b[i] = toUpperTable[b[i]]
+	}
+	return b
+}
+
+// TrimRightBytes is the equivalent of bytes.TrimRight
+func TrimRightBytes(b []byte, cutset byte) []byte {
+	lenStr := len(b)
+	for lenStr > 0 && b[lenStr-1] == cutset {
+		lenStr--
+	}
+	return b[:lenStr]
+}
+
+// TrimLeftBytes is the equivalent of bytes.TrimLeft
+func TrimLeftBytes(b []byte, cutset byte) []byte {
+	lenStr, start := len(b), 0
+	for start < lenStr && b[start] == cutset {
+		start++
+	}
+	return b[start:]
+}
+
+// TrimBytes is the equivalent of bytes.Trim
+func TrimBytes(b []byte, cutset byte) []byte {
+	i, j := 0, len(b)-1
+	for ; i <= j; i++ {
+		if b[i] != cutset {
+			break
+		}
+	}
+	for ; i < j; j-- {
+		if b[j] != cutset {
+			break
+		}
+	}
+
+	return b[i : j+1]
+}
+
+// EqualFoldBytes tests ascii slices for equality case-insensitively
+func EqualFoldBytes(b, s []byte) bool {
+	if len(b) != len(s) {
+		return false
+	}
+	for i := len(b) - 1; i >= 0; i-- {
+		if toUpperTable[b[i]] != toUpperTable[s[i]] {
+			return false
+		}
+	}
+	return true
+}