Added --clean flag in 'compile' command (arduino#1019)

Author: cmaglie

cli/compile/compile.go

@@ -51,6 +51,7 @@ var (
 	libraries          []string // List of custom libraries paths separated by commas. Or can be used multiple times for multiple libraries paths.
 	optimizeForDebug   bool     // Optimize compile output for debug, not for release
 	programmer         string   // Use the specified programmer to upload
+	clean              bool     // Cleanup the build folder and do not use any cached build
 )
 
 // NewCommand created a new `compile` command
@@ -86,6 +87,7 @@ func NewCommand() *cobra.Command {
 		"List of custom libraries paths separated by commas. Or can be used multiple times for multiple libraries paths.")
 	command.Flags().BoolVar(&optimizeForDebug, "optimize-for-debug", false, "Optional, optimize compile output for debugging, rather than for release.")
 	command.Flags().StringVarP(&programmer, "programmer", "P", "", "Optional, use the specified programmer to upload.")
+	command.Flags().BoolVar(&clean, "clean", false, "Optional, cleanup the build folder and do not use any cached build.")
 
 	return command
 }
@@ -121,6 +123,7 @@ func run(cmd *cobra.Command, args []string) {
 		DryRun:           dryRun,
 		Libraries:        libraries,
 		OptimizeForDebug: optimizeForDebug,
+		Clean:            clean,
 	}, os.Stdout, os.Stderr, viper.GetString("logging.level") == "debug")
 
 	if err != nil {

commands/compile/compile.go

@@ -59,6 +59,7 @@ func Compile(ctx context.Context, req *rpc.CompileReq, outStream, errStream io.W
 		"exportDir":       telemetry.Sanitize(req.GetExportDir()),
 		"jobs":            strconv.FormatInt(int64(req.Jobs), 10),
 		"libraries":       strings.Join(req.Libraries, ","),
+		"clean":           strconv.FormatBool(req.GetClean()),
 	}
 
 	if req.GetExportFile() != "" {
@@ -188,6 +189,7 @@ func Compile(ctx context.Context, req *rpc.CompileReq, outStream, errStream io.W
 	builderCtx.ExecStdout = outStream
 	builderCtx.ExecStderr = errStream
 	builderCtx.SetLogger(i18n.LoggerToCustomStreams{Stdout: outStream, Stderr: errStream})
+	builderCtx.Clean = req.GetClean()
 
 	// if --preprocess or --show-properties were passed, we can stop here
 	if req.GetShowProperties() {

legacy/builder/phases/core_builder.go

@@ -94,7 +94,7 @@ func compileCore(ctx *types.Context, buildPath *paths.Path, buildCachePath *path
 		archivedCoreName := GetCachedCoreArchiveFileName(buildProperties.Get(constants.BUILD_PROPERTIES_FQBN),
 			buildProperties.Get("compiler.optimization_flags"), realCoreFolder)
 		targetArchivedCore = buildCachePath.Join(archivedCoreName)
-		canUseArchivedCore := !builder_utils.CoreOrReferencedCoreHasChanged(realCoreFolder, targetCoreFolder, targetArchivedCore)
+		canUseArchivedCore := !ctx.Clean && !builder_utils.CoreOrReferencedCoreHasChanged(realCoreFolder, targetCoreFolder, targetArchivedCore)
 
 		if canUseArchivedCore {
 			// use archived core

legacy/builder/types/context.go

@@ -70,6 +70,7 @@ type Context struct {
 	ArduinoAPIVersion    string
 	FQBN                 *cores.FQBN
 	CodeCompleteAt       string
+	Clean                bool
 
 	// Build options are serialized here
 	BuildOptionsJson         string

legacy/builder/wipeout_build_path_if_build_options_changed.go

@@ -21,15 +21,18 @@ import (
 
 	"github.com/arduino/arduino-cli/legacy/builder/builder_utils"
 	"github.com/arduino/arduino-cli/legacy/builder/constants"
-	"github.com/arduino/arduino-cli/legacy/builder/gohasissues"
 	"github.com/arduino/arduino-cli/legacy/builder/types"
+	"github.com/arduino/go-paths-helper"
 	properties "github.com/arduino/go-properties-orderedmap"
 	"github.com/pkg/errors"
 )
 
 type WipeoutBuildPathIfBuildOptionsChanged struct{}
 
 func (s *WipeoutBuildPathIfBuildOptionsChanged) Run(ctx *types.Context) error {
+	if ctx.Clean {
+		return doCleanup(ctx.BuildPath)
+	}
 	if ctx.BuildOptionsJsonPrevious == "" {
 		return nil
 	}
@@ -64,18 +67,22 @@ func (s *WipeoutBuildPathIfBuildOptionsChanged) Run(ctx *types.Context) error {
 		}
 	}
 
+	return doCleanup(ctx.BuildPath)
+}
+
+func doCleanup(buildPath *paths.Path) error {
 	// FIXME: this should go outside legacy and behind a `logrus` call so users can
 	// control when this should be printed.
 	// logger.Println(constants.LOG_LEVEL_INFO, constants.MSG_BUILD_OPTIONS_CHANGED)
 
-	buildPath := ctx.BuildPath
-	files, err := gohasissues.ReadDir(buildPath.String())
-	if err != nil {
-		return errors.WithStack(err)
-	}
-	for _, file := range files {
-		buildPath.Join(file.Name()).RemoveAll()
+	if files, err := buildPath.ReadDir(); err != nil {
+		return errors.WithMessage(err, "cleaning build path")
+	} else {
+		for _, file := range files {
+			if err := file.RemoveAll(); err != nil {
+				return errors.WithMessage(err, "cleaning build path")
+			}
+		}
 	}
-
 	return nil
 }

rpc/commands/compile.pb.go

@@ -40,6 +40,7 @@ message CompileReq {
   bool optimizeForDebug = 16; // Optimize compile output for debug, not for release.
   bool dryRun = 17; // When set to `true` the compiled binary will not be copied to the export directory.
   string export_dir = 18; // Optional: save the build artifacts in this directory, the directory must exist.
+  bool clean = 19; // Optional: cleanup the build folder and do not use any previously cached build
 }
 
 message CompileResp {