incus/profile: Add support for creating from YAML

Part of #741

Signed-off-by: Vishesh Agrawal <agrawal.vishesh.178@gmail.com>

cmd/incus/profile.go

@@ -351,6 +351,10 @@ func (c *cmdProfileCreate) Command() *cobra.Command {
 	cmd.Short = i18n.G("Create profiles")
 	cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
 		`Create profiles`))
+	cmd.Example = cli.FormatSection("", i18n.G(`incus profile create p1
+
+incus profile create p1 < config.yaml
+    Create profile with configuration from config.yaml`))
 
 	cmd.RunE = c.Run
 
@@ -366,12 +370,27 @@ func (c *cmdProfileCreate) Command() *cobra.Command {
 }
 
 func (c *cmdProfileCreate) Run(cmd *cobra.Command, args []string) error {
+	var stdinData api.ProfilePut
+
 	// Quick checks.
 	exit, err := c.global.CheckArgs(cmd, args, 1, 1)
 	if exit {
 		return err
 	}
 
+	// If stdin isn't a terminal, read text from it
+	if !termios.IsTerminal(getStdinFd()) {
+		contents, err := io.ReadAll(os.Stdin)
+		if err != nil {
+			return err
+		}
+
+		err = yaml.Unmarshal(contents, &stdinData)
+		if err != nil {
+			return err
+		}
+	}
+
 	// Parse remote
 	resources, err := c.global.ParseServers(args[0])
 	if err != nil {
@@ -387,6 +406,7 @@ func (c *cmdProfileCreate) Run(cmd *cobra.Command, args []string) error {
 	// Create the profile
 	profile := api.ProfilesPost{}
 	profile.Name = resource.name
+	profile.ProfilePut = stdinData
 
 	err = resource.server.CreateProfile(profile)
 	if err != nil {