Use %w to wrap errors (#1175)

1 files changed, 11 insertions, 11 deletions

diff --git a/fs.go b/fs.go
index c3be8c0..257f066 100644
--- a/fs.go
+++ b/fs.go
@@ -524,7 +524,7 @@ func (ff *fsFile) bigFileReader() (io.Reader, error) {
 
 	f, err := os.Open(ff.f.Name())
 	if err != nil {
-		return nil, fmt.Errorf("cannot open already opened file: %s", err)
+		return nil, fmt.Errorf("cannot open already opened file: %w", err)
 	}
 	return &bigFileReader{
 		f:  f,
@@ -981,7 +981,7 @@ func (h *fsHandler) openIndexFile(ctx *RequestCtx, dirPath string, mustCompress
 			return ff, nil
 		}
 		if !os.IsNotExist(err) {
-			return nil, fmt.Errorf("cannot open file %q: %s", indexFilePath, err)
+			return nil, fmt.Errorf("cannot open file %q: %w", indexFilePath, err)
 		}
 	}
 
@@ -1100,7 +1100,7 @@ func (h *fsHandler) compressAndOpenFSFile(filePath string, fileEncoding string)
 	fileInfo, err := f.Stat()
 	if err != nil {
 		f.Close()
-		return nil, fmt.Errorf("cannot obtain info for file %q: %s", filePath, err)
+		return nil, fmt.Errorf("cannot obtain info for file %q: %w", filePath, err)
 	}
 
 	if fileInfo.IsDir() {
@@ -1146,7 +1146,7 @@ func (h *fsHandler) compressFileNolock(f *os.File, fileInfo os.FileInfo, filePat
 	if err != nil {
 		f.Close()
 		if !os.IsPermission(err) {
-			return nil, fmt.Errorf("cannot create temporary file %q: %s", tmpFilePath, err)
+			return nil, fmt.Errorf("cannot create temporary file %q: %w", tmpFilePath, err)
 		}
 		return nil, errNoCreatePermission
 	}
@@ -1168,14 +1168,14 @@ func (h *fsHandler) compressFileNolock(f *os.File, fileInfo os.FileInfo, filePat
 	zf.Close()
 	f.Close()
 	if err != nil {
-		return nil, fmt.Errorf("error when compressing file %q to %q: %s", filePath, tmpFilePath, err)
+		return nil, fmt.Errorf("error when compressing file %q to %q: %w", filePath, tmpFilePath, err)
 	}
 	if err = os.Chtimes(tmpFilePath, time.Now(), fileInfo.ModTime()); err != nil {
 		return nil, fmt.Errorf("cannot change modification time to %s for tmp file %q: %s",
 			fileInfo.ModTime(), tmpFilePath, err)
 	}
 	if err = os.Rename(tmpFilePath, compressedFilePath); err != nil {
-		return nil, fmt.Errorf("cannot move compressed file from %q to %q: %s", tmpFilePath, compressedFilePath, err)
+		return nil, fmt.Errorf("cannot move compressed file from %q to %q: %w", tmpFilePath, compressedFilePath, err)
 	}
 	return h.newCompressedFSFile(compressedFilePath, fileEncoding)
 }
@@ -1183,12 +1183,12 @@ func (h *fsHandler) compressFileNolock(f *os.File, fileInfo os.FileInfo, filePat
 func (h *fsHandler) newCompressedFSFile(filePath string, fileEncoding string) (*fsFile, error) {
 	f, err := os.Open(filePath)
 	if err != nil {
-		return nil, fmt.Errorf("cannot open compressed file %q: %s", filePath, err)
+		return nil, fmt.Errorf("cannot open compressed file %q: %w", filePath, err)
 	}
 	fileInfo, err := f.Stat()
 	if err != nil {
 		f.Close()
-		return nil, fmt.Errorf("cannot obtain info for compressed file %q: %s", filePath, err)
+		return nil, fmt.Errorf("cannot obtain info for compressed file %q: %w", filePath, err)
 	}
 	return h.newFSFile(f, fileInfo, true, fileEncoding)
 }
@@ -1210,7 +1210,7 @@ func (h *fsHandler) openFSFile(filePath string, mustCompress bool, fileEncoding
 	fileInfo, err := f.Stat()
 	if err != nil {
 		f.Close()
-		return nil, fmt.Errorf("cannot obtain info for file %q: %s", filePath, err)
+		return nil, fmt.Errorf("cannot obtain info for file %q: %w", filePath, err)
 	}
 
 	if fileInfo.IsDir() {
@@ -1226,7 +1226,7 @@ func (h *fsHandler) openFSFile(filePath string, mustCompress bool, fileEncoding
 		fileInfoOriginal, err := os.Stat(filePathOriginal)
 		if err != nil {
 			f.Close()
-			return nil, fmt.Errorf("cannot obtain info for original file %q: %s", filePathOriginal, err)
+			return nil, fmt.Errorf("cannot obtain info for original file %q: %w", filePathOriginal, err)
 		}
 
 		// Only re-create the compressed file if there was more than a second between the mod times.
@@ -1257,7 +1257,7 @@ func (h *fsHandler) newFSFile(f *os.File, fileInfo os.FileInfo, compressed bool,
 	if len(contentType) == 0 {
 		data, err := readFileHeader(f, compressed, fileEncoding)
 		if err != nil {
-			return nil, fmt.Errorf("cannot read header of the file %q: %s", f.Name(), err)
+			return nil, fmt.Errorf("cannot read header of the file %q: %w", f.Name(), err)
 		}
 		contentType = http.DetectContentType(data)
 	}