Initial code to generate service code.

v2alpha/cmd/goupnp2srvgen/tmplfuncs/tmplfuncs.go

@@ -0,0 +1,30 @@
+// Package tmplfuncs contains functions for injection into templates.
+package tmplfuncs
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Args accepts pairs of string names and any values and constructs a map from them.
+// This is to help passing multiple arguments to a template from within a template.
+func Args(args ...any) (map[string]any, error) {
+	if len(args)%2 != 0 {
+		return nil, errors.New("args must have an even number of arguments")
+	}
+	res := make(map[string]any, len(args)/2)
+
+	for i := 0; i < len(args); i += 2 {
+		name, ok := args[i].(string)
+		if !ok {
+			return nil, fmt.Errorf("argument %d: want string, got %T", i, args[i])
+		}
+		value := args[i+1]
+		if _, exists := res[name]; exists {
+			return nil, fmt.Errorf("argument name %q occurs more than once", name)
+		}
+		res[name] = value
+	}
+
+	return res, nil
+}