Better error handling

main.go

@@ -110,6 +110,9 @@ func process(source Source, recursive bool) {
 func findZipFiles(fs afero.Fs) ([]string, error) {
 	var files []string
 	err := afero.Walk(fs, "", func(path string, f os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
 		if strings.HasSuffix(path, ".zip") {
 			files = append(files, path)
 		}
@@ -121,6 +124,9 @@ func findZipFiles(fs afero.Fs) ([]string, error) {
 func findWorldDirs(fs afero.Fs) ([]string, error) {
 	var files []string
 	err := afero.Walk(fs, "", func(path string, f os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
 		if filepath.Base(path) == "region" && f.IsDir() {
 			files = append(files, filepath.Dir(path))
 		}

source_dir.go

@@ -54,6 +54,9 @@ func (s *DirSource) Save() error {
 		}
 
 		err = afero.Walk(s.overlay, "", func(path string, info fs.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
 			if s.overlay.IsRemoved(path) != nil {
 				return nil
 			}

source_zip.go

@@ -58,6 +58,9 @@ func (s *ZipSource) Save() error {
 		}
 		zw := kpzip.NewWriter(outFile)
 		err = afero.Walk(s.overlay, "", func(path string, info fs.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
 			if s.overlay.IsRemoved(path) != nil {
 				return nil
 			}

world_optimizer.go

@@ -7,10 +7,11 @@ import (
 	"path/filepath"
 	"strings"
 
+	"mc-world-trimmer/chunk"
+
 	"github.com/Tnze/go-mc/save/region"
 	"github.com/dustin/go-humanize"
 	"github.com/spf13/afero"
-	"mc-world-trimmer/chunk"
 )
 
 type WorldOptimizer struct {
@@ -215,9 +216,6 @@ func (o *WorldOptimizer) optimizeChunks(dir string) error {
 			continue
 		}
 
-		if *verbose {
-			//o.log(dir, file.Name(), "unchanged", humanize.Bytes(uint64(file.Size())))
-		}
 		newWorldSize += uint64(file.Size())
 	}