1 files changed, 70 insertions, 0 deletions
diff --git a/resources/resource/resource_helpers.go b/resources/resource/resource_helpers.go
new file mode 100644
index 000000000..b0830a83c
--- /dev/null
+++ b/resources/resource/resource_helpers.go
@@ -0,0 +1,70 @@
+// Copyright 2019 The Hugo Authors. All rights reserved.
+//
+// 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 resource
+
+import (
+	"strings"
+	"time"
+
+	"github.com/gohugoio/hugo/helpers"
+
+	"github.com/spf13/cast"
+)
+
+// GetParam will return the param with the given key from the Resource,
+// nil if not found.
+func GetParam(r Resource, key string) interface{} {
+	return getParam(r, key, false)
+}
+
+// GetParamToLower is the same as GetParam but it will lower case any string
+// result, including string slices.
+func GetParamToLower(r Resource, key string) interface{} {
+	return getParam(r, key, true)
+}
+
+func getParam(r Resource, key string, stringToLower bool) interface{} {
+	v := r.Params()[strings.ToLower(key)]
+
+	if v == nil {
+		return nil
+	}
+
+	switch val := v.(type) {
+	case bool:
+		return val
+	case string:
+		if stringToLower {
+			return strings.ToLower(val)
+		}
+		return val
+	case int64, int32, int16, int8, int:
+		return cast.ToInt(v)
+	case float64, float32:
+		return cast.ToFloat64(v)
+	case time.Time:
+		return val
+	case []string:
+		if stringToLower {
+			return helpers.SliceToLower(val)
+		}
+		return v
+	case map[string]interface{}: // JSON and TOML
+		return v
+	case map[interface{}]interface{}: // YAML
+		return v
+	}
+
+	return nil
+}