Better caldav support (#73)

vendor/github.com/samedi/caldav-go/handlers/headers.go

@@ -0,0 +1,27 @@
+package handlers
+
+import (
+	"net/http"
+)
+
+const (
+	HD_DEPTH              = "Depth"
+	HD_DEPTH_DEEP         = "1"
+	HD_PREFER             = "Prefer"
+	HD_PREFER_MINIMAL     = "return=minimal"
+	HD_PREFERENCE_APPLIED = "Preference-Applied"
+)
+
+type headers struct {
+	http.Header
+}
+
+func (h headers) IsDeep() bool {
+	depth := h.Get(HD_DEPTH)
+	return (depth == HD_DEPTH_DEEP)
+}
+
+func (h headers) IsMinimal() bool {
+	prefer := h.Get(HD_PREFER)
+	return (prefer == HD_PREFER_MINIMAL)
+}