1 files changed, 43 insertions, 0 deletions

diff --git a/util.go b/util.go
new file mode 100644
index 0000000..10709e2
--- /dev/null
+++ b/util.go
@@ -0,0 +1,43 @@
+package main
+
+import (
+        "net/url"
+        "strings"
+)
+
+type stringSet struct {
+        values map[string]bool
+}
+
+func NewStringSet(values ...string) *stringSet {
+        s := &stringSet{
+                values: make(map[string]bool, len(values)),
+        }
+
+        for _, v := range values {
+                s.Add(v)
+        }
+
+        return s
+}
+
+func (s *stringSet) Add(v string) {
+        s.values[v] = true
+}
+
+func (s *stringSet) Contains(k string) bool {
+        _, ok := s.values[k]
+        return ok
+}
+
+func URLMustParse(u string) *url.URL {
+        o, err := url.Parse(u)
+        if err != nil {
+                panic(err)
+        }
+        return o
+}
+
+func CompareUpper(lhs, rhs string) bool {
+        return strings.ToUpper(lhs) == strings.ToUpper(rhs)
+}