mecha: extend build command with project/modules subcommands and flags

cmd/mecha/about.go

@@ -22,6 +22,7 @@ var logo = `
 
 func about(cCtx *cli.Context) error {
 	fmt.Println(logo)
+	fmt.Println("Version:", Version())
 
 	return nil
 }

cmd/mecha/build.go

@@ -13,15 +13,70 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
-func build(cCtx *cli.Context) error {
+func buildProject(cCtx *cli.Context) error {
+	if cCtx.Args().Len() < 1 {
+		return fmt.Errorf("target board required")
+	}
+
+	targetName := cCtx.Args().First()
+
 	wd, err := os.Getwd()
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
 
-	if stat, err := os.Stat(filepath.Join(wd, "modules")); err == nil && stat.IsDir() {
+	projectname := filepath.Base(wd)
+
+	s := spinner.New(spinner.CharSets[5], 100*time.Millisecond, spinner.WithWriter(os.Stdout))
+	s.Suffix = " Building application for " + targetName + " using interpreter " + cCtx.String("interpreter")
+	s.FinalMSG = "Application built.\n"
+	s.Start()
+	defer s.Stop()
+
+	intp := cCtx.String("interpreter")
+	if intp == "wasman" {
+		intp = "wasman nowazero"
+	}
 
+	if cCtx.Bool("debug") {
+		intp += " debug"
+	}
+
+	args := []string{"build", "-o", projectname+".uf2", "-size", "short", "-stack-size", "8kb", "-tags", intp, "-target", targetName}
+
+	if len(cCtx.StringSlice("params")) > 0 {
+		ldlags := ""
+		for _, p := range cCtx.StringSlice("params") {
+			ldlags += " -X " + p
+		}
+		args = append(args, "-ldflags", ldlags)
+	}
+
+	args = append(args, ".")
+
+	var cmd = exec.Command("tinygo", args...)
+
+	var stdoutBuf, stderrBuf bytes.Buffer
+	cmd.Stdout = io.MultiWriter(&spinWriter{s, os.Stdout, false}, &stdoutBuf)
+	cmd.Stderr = io.MultiWriter(&spinWriter{s, os.Stderr, false}, &stderrBuf)
+
+	if err := cmd.Run(); err != nil {
+		fmt.Printf("%s: %v\n", cmd.String(), err)
+		os.Exit(1)
+	}
+
+	return nil
+}
+
+func buildModules(cCtx *cli.Context) error {
+	wd, err := os.Getwd()
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	if stat, err := os.Stat(filepath.Join(wd, "modules")); err == nil && stat.IsDir() {
 		// build modules?
 		dirs, err := os.ReadDir(filepath.Join(wd, "modules"))
 		if err != nil {
@@ -51,8 +106,6 @@ func build(cCtx *cli.Context) error {
 		}
 	}
 
-	// TODO: build main project
-
 	return nil
 }
 

cmd/mecha/flash.go

@@ -18,7 +18,7 @@ func flash(cCtx *cli.Context) error {
 	}
 
 	// build all the modules before flashing the hardware
-	if err := build(cCtx); err != nil {
+	if err := buildModules(cCtx); err != nil {
 		return err
 	}
 

cmd/mecha/main.go

@@ -7,9 +7,20 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
-var templateFlags = []cli.Flag{
-	&cli.StringFlag{Name: "template", Aliases: []string{"t"}, Usage: "template to use for module creation"},
-}
+var (
+	templateFlags = []cli.Flag{
+		&cli.StringFlag{Name: "template", Aliases: []string{"t"}, Usage: "template to use for module creation"},
+	}
+
+	buildFlags = []cli.Flag{
+		&cli.StringFlag{Name: "interpreter", Aliases: []string{"i"}, Value: "wazero", Usage: "WebAssembly interpreter to use (wasman, wazero)"},
+		&cli.BoolFlag{Name: "debug", Aliases: []string{"d"}, Usage: "perform additional logging for debugging"},
+		&cli.StringSliceFlag{
+			Name:  "params",
+			Usage: "Pass build-time parameters for the application or modules. Format: -params main.name=value -params main.descript=value2",
+		},
+	}
+)
 
 func main() {
 	app := &cli.App{
@@ -42,32 +53,39 @@ func main() {
 			},
 			{
 				Name:   "build",
-				Usage:  "Build binary files for Mechanoid project",
-				Action: build,
+				Usage:  "Build binary files for Mechanoid project and/or modules",
+				ArgsUsage: "<project|modules>",
+				Flags:  buildFlags,
+				Action: buildModules,
+				Subcommands: []*cli.Command{
+					{
+						Name:      "project",
+						Usage:     "Build current Mechanoid project",
+						Action:    buildProject,
+						Flags:     buildFlags,
+					},
+					{
+						Name:      "modules",
+						Usage:     "Build current Mechanoid modules",
+						Action:    buildModules,
+						Flags:     buildFlags,
+					},
+				},
 			},
 			{
 				Name:      "flash",
 				Usage:     "Flash Mechanoid project to hardware",
 				Action:    flash,
 				ArgsUsage: "<board-name>",
-				Flags: []cli.Flag{
+				Flags: append(buildFlags,
 					&cli.BoolFlag{Name: "monitor", Aliases: []string{"m"}, Usage: "monitor the serial port after flashing"},
-					&cli.StringFlag{Name: "interpreter", Aliases: []string{"i"}, Value: "wazero", Usage: "WebAssembly interpreter to use (wasman, wazero)"},
-					&cli.BoolFlag{Name: "debug", Aliases: []string{"d"}, Usage: "perform additional logging for debugging"},
-					&cli.StringSliceFlag{
-						Name:  "params",
-						Usage: "Pass build-time parameters for the application. Format: -params main.name=value -params main.descript=value2",
-					},
-				},
+				),
 			},
 			{
 				Name:   "run",
 				Usage:  "Run code for Mechanoid project",
 				Action: run,
-				Flags: []cli.Flag{
-					&cli.StringFlag{Name: "interpreter", Aliases: []string{"i"}, Value: "wazero", Usage: "WebAssembly interpreter to use (wasman, wazero)"},
-					&cli.BoolFlag{Name: "debug", Aliases: []string{"d"}, Usage: "perform additional logging for debugging"},
-				},
+				Flags: buildFlags,
 			},
 			{
 				Name:   "test",

cmd/mecha/run.go

@@ -14,7 +14,7 @@ func run(cCtx *cli.Context) error {
 	fmt.Println("Running using interpreter", cCtx.String("interpreter"))
 
 	// build all the modules before running
-	if err := build(cCtx); err != nil {
+	if err := buildModules(cCtx); err != nil {
 		return err
 	}