Fixed an issue where go:embed directives would generate illegal directories (#3445)

* Update staticanalysis.go and associated tests

* Update changelog

* Changed format of octal literal

* Update changelog

v2/internal/staticanalysis/staticanalysis.go

@@ -52,24 +52,31 @@ func GetEmbedDetailsForFile(file *ast.File, baseDir string) []*EmbedDetails {
 		for _, c := range comment.List {
 			if strings.HasPrefix(c.Text, "//go:embed") {
 				sl := strings.Split(c.Text, " ")
-				path := ""
-				all := false
 				if len(sl) == 1 {
 					continue
 				}
-				embedPath := strings.TrimSpace(sl[1])
-				switch true {
-				case strings.HasPrefix(embedPath, "all:"):
-					path = strings.TrimPrefix(embedPath, "all:")
-					all = true
-				default:
-					path = embedPath
+				// support for multiple paths in one comment
+				for _, arg := range sl[1:] {
+					embedPath := strings.TrimSpace(arg)
+					// ignores all pattern matching characters except escape sequence
+					if strings.Contains(embedPath, "*") || strings.Contains(embedPath, "?") || strings.Contains(embedPath, "[") {
+						continue
+					}
+					if strings.HasPrefix(embedPath, "all:") {
+						result = append(result, &EmbedDetails{
+							EmbedPath: strings.TrimPrefix(embedPath, "all:"),
+							All:       true,
+							BaseDir:   baseDir,
+						})
+					} else {
+						result = append(result, &EmbedDetails{
+							EmbedPath: embedPath,
+							All:       false,
+							BaseDir:   baseDir,
+						})
+					}
+
 				}
-				result = append(result, &EmbedDetails{
-					EmbedPath: path,
-					All:       all,
-					BaseDir:   baseDir,
-				})
 			}
 		}
 	}

v2/internal/staticanalysis/staticanalysis_test.go

@@ -1,8 +1,9 @@
 package staticanalysis
 
 import (
-	"github.com/stretchr/testify/require"
 	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
 func TestGetEmbedDetails(t *testing.T) {
@@ -25,6 +26,10 @@ func TestGetEmbedDetails(t *testing.T) {
 					EmbedPath: "frontend/dist",
 					All:       true,
 				},
+				{
+					EmbedPath: "frontend/static",
+					All:       false,
+				},
 			},
 			wantErr: false,
 		},

v2/internal/staticanalysis/test/standard/main.go

@@ -8,9 +8,12 @@ import (
 	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
 )
 
-//go:embed all:frontend/dist
+//go:embed all:frontend/dist frontend/static
 var assets embed.FS
 
+//go:embed frontend/src/*.json
+var srcjson embed.FS
+
 func main() {
 	// Create an instance of the app structure
 	app := NewApp()

v2/pkg/commands/build/build.go

@@ -169,16 +169,19 @@ func CreateEmbedDirectories(cwd string, buildOptions *Options) error {
 
 	for _, embedDetail := range embedDetails {
 		fullPath := embedDetail.GetFullPath()
-		if _, err := os.Stat(fullPath); os.IsNotExist(err) {
-			err := os.MkdirAll(fullPath, 0o755)
-			if err != nil {
-				return err
+		// assumes path is directory only if it has no extension
+		if filepath.Ext(fullPath) == "" {
+			if _, err := os.Stat(fullPath); os.IsNotExist(err) {
+				err := os.MkdirAll(fullPath, 0o755)
+				if err != nil {
+					return err
+				}
+				f, err := os.Create(filepath.Join(fullPath, "gitkeep"))
+				if err != nil {
+					return err
+				}
+				_ = f.Close()
 			}
-			f, err := os.Create(filepath.Join(fullPath, "gitkeep"))
-			if err != nil {
-				return err
-			}
-			_ = f.Close()
 		}
 	}
 

website/src/pages/changelog.mdx

@@ -32,6 +32,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed an issue where embed directives with patterned paths would create illegal directories. Changed by [@twonull](https://github.com/twonull) in [PR](https://github.com/wailsapp/wails/pull/3445)
 - Fixed an issue where certain calls to createFrom in TypeScript would fail. Changed by [@twonull](https://github.com/twonull) in [PR](https://github.com/wailsapp/wails/pull/3435)
 - Fixed some typos in comments. Changed by [@reallylowest](https://github.com/reallylowest) in [PR](https://github.com/wailsapp/wails/pull/3357)
 - Fixed an issue where the destination file was not properly closed after copying. Changed by [@testwill](https://github.com/testwill) in [PR](https://github.com/wailsapp/wails/pull/3384)