1 files changed, 43 insertions, 0 deletions
diff --git a/formvalues.go b/formvalues.go
new file mode 100644
index 0000000..359e513
--- /dev/null
+++ b/formvalues.go
@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2020 Ethel Morgan
+//
+// SPDX-License-Identifier: MIT
+
+package httputil
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/mux"
+)
+
+// FormValues matches POST form values the same way that github.com/gorilla/mux's built-in Queries and Headers does.
+func FormValues(keysAndValues ...string) mux.MatcherFunc {
+	if len(keysAndValues)%2 != 0 {
+		panic("an equal number of keys and values must be provided")
+	}
+	return func(r *http.Request, rm *mux.RouteMatch) bool {
+		for i := 0; i < len(keysAndValues); i += 2 {
+			key := keysAndValues[i]
+			value := keysAndValues[i+1]
+
+			formValue := r.FormValue(key)
+			if formValue == "" {
+				return false
+			}
+
+			if strings.HasPrefix(value, "{") && strings.HasSuffix(value, "}") {
+				if rm.Vars == nil {
+					rm.Vars = map[string]string{}
+				}
+				varKey := value[1 : len(value)-1]
+				rm.Vars[varKey] = formValue
+			} else {
+				if formValue != value {
+					return false
+				}
+			}
+		}
+		return true
+	}
+}