Add ability to add prefix and suffix to list

command/cmdHelp.go

@@ -36,32 +36,34 @@ func (cmd *HelpCommand) Apply(m *manager.Manager) error {
 				<none>
 
 			init
-				-r|--reset (bool) [optional = false]
+				-r|-reset (bool) [optional = false]
 
 			dump
-				-k|--kind (string) [required]
+				-k|-kind (string) [required]
 					config, remote, system
 
 			update
-				-t|--timeout (duration) [optional = 5*time.Second]
+				-t|-timeout (duration) [optional = 5*time.Second]
 
 			ls
-				-r|--regex (bool) [optional = false]
-				-f|--format (string) [optional = json]
+				-r|-regex (bool) [optional = false]
+				-f|-format (string) [optional = json]
 					json, consul, env, telegraf
-				-p|--pick (string) [optional = ""]
-				-o|--omit (string) [optional = ""]
+				-p|-pick (string) [optional = ""]
+				-o|-omit (string) [optional = ""]
+				-e|-prefix (string) [optional = ""]
+				-u|-suffix (string) [optional = ""]
 
 			get
-				-k|--key     (string) [required]
-				-d|--default (string) [optional = ""]
+				-k|-key     (string) [required]
+				-d|-default (string) [optional = ""]
 
 			set
-				-k|--key   (string) [required]
-				-v|--value (string) [required]
+				-k|-key   (string) [required]
+				-v|-value (string) [required]
 
 			rm
-				-k|--key (string) [required]
+				-k|-key (string) [required]
 
 			version
 				<none>

command/cmdLs.go

@@ -13,6 +13,8 @@ type LsCommand struct {
 	pick   string
 	omit   string
 	format string
+	prefix string
+	suffix string
 }
 
 func NewLsCommand() *LsCommand {
@@ -31,6 +33,10 @@ func NewLsCommand() *LsCommand {
 	cmd.flagSet.StringVar(&cmd.omit, "omit", "", "")
 	cmd.flagSet.StringVar(&cmd.format, "f", "json", "")
 	cmd.flagSet.StringVar(&cmd.format, "format", "json", "")
+	cmd.flagSet.StringVar(&cmd.prefix, "e", "", "")
+	cmd.flagSet.StringVar(&cmd.prefix, "prefix", "", "")
+	cmd.flagSet.StringVar(&cmd.suffix, "u", "", "")
+	cmd.flagSet.StringVar(&cmd.suffix, "suffix", "", "")
 
 	// Don't print unneeded usage
 	cmd.flagSet.Usage = func() {}
@@ -67,6 +73,10 @@ func (cmd *LsCommand) Apply(m *manager.Manager) error {
 
 	tags := m.GetTags(cmd.regex, cmd.pick, cmd.omit)
 
+	// Append prefixes or suffixes to keys
+	tags = m.PrefixTags(tags, cmd.prefix)
+	tags = m.SuffixTags(tags, cmd.suffix)
+
 	// Retrieve the specified format method
 	format, _ := manager.Formats[cmd.format]
 

manager/manager.go

@@ -447,3 +447,37 @@ func (m *Manager) RemoveTag(key string) string {
 	delete(m.system, key)
 	return existing
 }
+
+// PrefixTags returns new tags based on the specified
+// tags but with each key prepended with prefix string
+func (m *Manager) PrefixTags(tags Tags, prefix string) Tags {
+
+	if prefix == "" {
+		return tags
+	}
+
+	result := make(Tags)
+	// Loop through specified tags
+	for key, value := range tags {
+		result[prefix+key] = value
+	}
+
+	return result
+}
+
+// SuffixTags returns new tags based on the specified
+// tags but with each key appended with suffix string
+func (m *Manager) SuffixTags(tags Tags, suffix string) Tags {
+
+	if suffix == "" {
+		return tags
+	}
+
+	result := make(Tags)
+	// Loop through specified tags
+	for key, value := range tags {
+		result[key+suffix] = value
+	}
+
+	return result
+}