Add Get method to Dict and ParamList

Author: aslrousta

.gitignore

@@ -0,0 +1,12 @@
+# Project files
+.idea/
+.vscode/
+
+# Junks
+.DS_Store
+*.swp
+*~
+tmp/
+
+# Vendor dependencies
+vendor/

README.md

@@ -0,0 +1,29 @@
+# Go-SF
+
+Go-SF is a Go implementation of IETF "Structured Field Values for HTTP" standard ([RFC8941](https://www.rfc-editor.org/rfc/rfc8941.html)).
+
+## License
+
+```
+MIT License
+
+Copyright (c) 2023 HTTP Message Signatures
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```

package.go

@@ -1,3 +1,3 @@
-// Package sf is an implementation of IETF standard RFC8941, "Structured Field
-// Values for HTTP".
+// Package sf is an implementation of IETF "Structured Field Values for HTTP"
+// standard (https://www.rfc-editor.org/rfc/rfc8941.html).
 package sf

type.go

@@ -56,6 +56,16 @@ func (d Dict) Add(k string, v Member) Dict {
 	return d
 }
 
+// Get retrieves a value from the dictionary by its key.
+func (d Dict) Get(k string) Member {
+	for _, p := range d {
+		if p.Key == k {
+			return p.Value
+		}
+	}
+	return nil
+}
+
 // Pair is a key-value pair in a dictionary.
 type Pair struct {
 	Key   string
@@ -124,6 +134,16 @@ func (l ParamList) Add(k string, v BareItem) ParamList {
 	return l
 }
 
+// Get retrieves a parameter value from the list by its key.
+func (l ParamList) Get(k string) BareItem {
+	for _, p := range l {
+		if p.Key == k {
+			return p.Value
+		}
+	}
+	return nil
+}
+
 // Encode serializes the parameter list.
 func (l ParamList) Encode() string {
 	if len(l) == 0 {