Add string TOML source

Signed-off-by: Evan Lezar <elezar@nvidia.com>

pkg/config/toml/source-string.go

@@ -0,0 +1,26 @@
+/**
+# Copyright 2024 NVIDIA CORPORATION
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+**/
+
+package toml
+
+type tomlString string
+
+var _ Loader = (*tomlFile)(nil)
+
+// Load loads the contents of the specified TOML file as a map.
+func (l tomlString) Load() (*Tree, error) {
+	return Load(string(l))
+}

pkg/config/toml/source.go

@@ -45,3 +45,12 @@ func FromCommandLine(cmds ...string) Loader {
 		args:    cmds[1:],
 	}
 }
+
+// FromString creates a TOML source for the specified contents.
+// If an empty string is passed an empty toml config is used.
+func FromString(contents string) Loader {
+	if contents == "" {
+		return Empty
+	}
+	return tomlString(contents)
+}