Fix io.Reader implementations and wrap more errors

[rbdr/mobius] / hotline / files.go

diff --git a/hotline/files.go b/hotline/files.go
index 0963fbfd73e50f70c7365f24c737bb07eb249fd9..901b98cbb01f981b0e1768ce9829f6dd884dca5e 100644 (file)
--- a/hotline/files.go
+++ b/hotline/files.go
@@ -3,6 +3,7 @@ package hotline
 import (
        "encoding/binary"
        "errors"
+       "fmt"
        "io"
        "io/fs"
        "os"
@@ -36,10 +37,11 @@ const maxFileSize = 4294967296
 func getFileNameList(path string, ignoreList []string) (fields []Field, err error) {
        files, err := os.ReadDir(path)
        if err != nil {
-               return fields, nil
+               return fields, fmt.Errorf("error reading path: %s: %w", path, err)
        }
 
-       for _, file := range files {
+       for i, _ := range files {
+               file := files[i]
                var fnwi FileNameWithInfo
 
                if ignoreFile(file.Name(), ignoreList) {
@@ -50,14 +52,14 @@ func getFileNameList(path string, ignoreList []string) (fields []Field, err erro
 
                fileInfo, err := file.Info()
                if err != nil {
-                       return fields, err
+                       return fields, fmt.Errorf("error getting file info: %s: %w", file.Name(), err)
                }
 
                // Check if path is a symlink.  If so, follow it.
                if fileInfo.Mode()&os.ModeSymlink != 0 {
                        resolvedPath, err := os.Readlink(filepath.Join(path, file.Name()))
                        if err != nil {
-                               return fields, err
+                               return fields, fmt.Errorf("error following symlink: %s: %w", resolvedPath, err)
                        }
 
                        rFile, err := os.Stat(resolvedPath)
@@ -92,7 +94,7 @@ func getFileNameList(path string, ignoreList []string) (fields []Field, err erro
                } else if file.IsDir() {
                        dir, err := os.ReadDir(filepath.Join(path, file.Name()))
                        if err != nil {
-                               return fields, err
+                               return fields, fmt.Errorf("readDir: %w", err)
                        }
 
                        var c uint32
@@ -113,7 +115,7 @@ func getFileNameList(path string, ignoreList []string) (fields []Field, err erro
 
                        hlFile, err := newFileWrapper(&OSFileStore{}, path+"/"+file.Name(), 0)
                        if err != nil {
-                               return nil, err
+                               return nil, fmt.Errorf("newFileWrapper: %w", err)
                        }
 
                        copy(fnwi.FileSize[:], hlFile.totalSize())
@@ -135,7 +137,7 @@ func getFileNameList(path string, ignoreList []string) (fields []Field, err erro
 
                b, err := io.ReadAll(&fnwi)
                if err != nil {
-                       return nil, err
+                       return nil, fmt.Errorf("error io.ReadAll: %w", err)
                }
                fields = append(fields, NewField(FieldFileNameWithInfo, b))
        }