feat filter tag (#172)

* feat filter tag

* add readme

README.md

@@ -290,6 +290,14 @@ $ pet search
 [ping]: ping 8.8.8.8 #network #google
 ```
 
+You can exec snipet with filtering the tag
+
+```
+$ pet exec -t google
+
+[ping]: ping 8.8.8.8 #network #google
+```
+
 ## Sync
 ### Gist
 You must obtain access token.

cmd/exec.go

@@ -27,7 +27,7 @@ func execute(cmd *cobra.Command, args []string) (err error) {
 		options = append(options, fmt.Sprintf("--query %s", shellescape.Quote(flag.Query)))
 	}
 
-	commands, err := filter(options)
+	commands, err := filter(options, flag.FilterTag)
 	if err != nil {
 		return err
 	}
@@ -47,6 +47,8 @@ func init() {
 		`Enable colorized output (only fzf)`)
 	execCmd.Flags().StringVarP(&config.Flag.Query, "query", "q", "",
 		`Initial value for query`)
+	execCmd.Flags().StringVarP(&config.Flag.FilterTag, "tag", "t", "",
+		`Filter tag`)
 	execCmd.Flags().BoolVarP(&config.Flag.Command, "command", "c", false,
 		`Show the command with the plain text before executing`)
 }

cmd/search.go

@@ -27,7 +27,7 @@ func search(cmd *cobra.Command, args []string) (err error) {
 	if flag.Query != "" {
 		options = append(options, fmt.Sprintf("--query %s", shellescape.Quote(flag.Query)))
 	}
-	commands, err := filter(options)
+	commands, err := filter(options, flag.FilterTag)
 	if err != nil {
 		return err
 	}
@@ -45,6 +45,8 @@ func init() {
 		`Enable colorized output (only fzf)`)
 	searchCmd.Flags().StringVarP(&config.Flag.Query, "query", "q", "",
 		`Initial value for query`)
+	searchCmd.Flags().StringVarP(&config.Flag.FilterTag, "tag", "t", "",
+		`Filter tag`)
 	searchCmd.Flags().StringVarP(&config.Flag.Delimiter, "delimiter", "d", "; ",
 		`Use delim as the command delimiter character`)
 }

cmd/util.go

@@ -33,12 +33,24 @@ func run(command string, r io.Reader, w io.Writer) error {
 	return cmd.Run()
 }
 
-func filter(options []string) (commands []string, err error) {
+func filter(options []string, tag string) (commands []string, err error) {
 	var snippets snippet.Snippets
 	if err := snippets.Load(); err != nil {
 		return commands, fmt.Errorf("Load snippet failed: %v", err)
 	}
 
+	if 0 < len(tag) {
+		var filteredSnipets snippet.Snippets
+		for _, snipet := range snippets.Snippets {
+			for _, t := range snipet.Tag {
+				if tag == t {
+					filteredSnipets.Snippets = append(filteredSnipets.Snippets, snipet)
+				}
+			}
+		}
+		snippets = filteredSnipets
+	}
+
 	snippetTexts := map[string]snippet.SnippetInfo{}
 	var text string
 	for _, s := range snippets.Snippets {

config/config.go

@@ -57,6 +57,7 @@ var Flag FlagConfig
 type FlagConfig struct {
 	Debug     bool
 	Query     string
+	FilterTag string
 	Command   bool
 	Delimiter string
 	OneLine   bool