Add print command

internal/cmd/common.go

@@ -0,0 +1,26 @@
+package cmd
+
+import (
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+func validCmdNames(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	p, err := newParser()
+	if err != nil {
+		cmd.PrintErrf("failed to get parser: %s", err)
+		return nil, cobra.ShellCompDirectiveError
+	}
+
+	names := p.Snippets().Names()
+
+	var filtered []string
+	for _, name := range names {
+		if strings.HasPrefix(name, toComplete) {
+			filtered = append(filtered, name)
+		}
+	}
+
+	return filtered, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
+}

internal/cmd/print.go

@@ -0,0 +1,33 @@
+package cmd
+
+import (
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+func printCmd() *cobra.Command {
+	cmd := cobra.Command{
+		Use:               "print",
+		Short:             "Print a selected snippet.",
+		Args:              cobra.ExactArgs(1),
+		ValidArgsFunction: validCmdNames,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			p, err := newParser()
+			if err != nil {
+				return errors.Wrap(err, "fail to read README file")
+			}
+
+			snippets := p.Snippets()
+
+			snippet, found := snippets.Lookup(args[0])
+			if !found {
+				return errors.Errorf("command %q not found; known command names: %s", args[0], snippets.Names())
+			}
+
+			_, err = cmd.OutOrStdout().Write([]byte(snippet.Content()))
+			return errors.Wrap(err, "failed to write to stdout")
+		},
+	}
+
+	return &cmd
+}

internal/cmd/root.go

@@ -32,6 +32,7 @@ func Root() *cobra.Command {
 
 	cmd.AddCommand(runCmd())
 	cmd.AddCommand(listCmd())
+	cmd.AddCommand(printCmd())
 	cmd.AddCommand(tasksCmd())
 
 	return &cmd

internal/cmd/run.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"os"
 	"os/signal"
-	"strings"
 	"syscall"
 
 	"github.com/pkg/errors"
@@ -15,28 +14,11 @@ import (
 
 func runCmd() *cobra.Command {
 	cmd := cobra.Command{
-		Use:     "run",
-		Aliases: []string{"exec"},
-		Short:   "Run a selected command.",
-		Args:    cobra.ExactArgs(1),
-		ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
-			p, err := newParser()
-			if err != nil {
-				cmd.PrintErrf("failed to get parser: %s", err)
-				return nil, cobra.ShellCompDirectiveError
-			}
-
-			names := p.Snippets().Names()
-
-			var filtered []string
-			for _, name := range names {
-				if strings.HasPrefix(name, toComplete) {
-					filtered = append(filtered, name)
-				}
-			}
-
-			return filtered, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
-		},
+		Use:               "run",
+		Aliases:           []string{"exec"},
+		Short:             "Run a selected command.",
+		Args:              cobra.ExactArgs(1),
+		ValidArgsFunction: validCmdNames,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			p, err := newParser()
 			if err != nil {