From 4dde97000fe016496cf2a999d4382c066ffdc56f Mon Sep 17 00:00:00 2001
From: Erik Unger <erik@erikunger.com>
Date: Tue, 26 Nov 2024 14:33:55 +0100
Subject: [PATCH] replace MemFilesAsFileReaders with generic AsFileReaders

---
 filereader.go | 18 ++++++++++++++++++
 memfile.go    | 12 ------------
 2 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/filereader.go b/filereader.go
index 65a301a..17a9f08 100644
--- a/filereader.go
+++ b/filereader.go
@@ -76,6 +76,24 @@ type FileReader interface {
 	GobEncode() ([]byte, error)
 }
 
+// AsFileReaders converts the passed files to []FileReader.
+// If the passed files are already of type []FileReader
+// then they are returned as is.
+func AsFileReaders[F FileReader](files []F) []FileReader {
+	if len(files) == 0 {
+		return nil
+	}
+	fileReaders, ok := any(files).([]FileReader)
+	if ok {
+		return fileReaders
+	}
+	fileReaders = make([]FileReader, len(files))
+	for i, memFile := range files {
+		fileReaders[i] = memFile
+	}
+	return fileReaders
+}
+
 // FileReaderNameIndex returns the slice index of the first FileReader
 // with the passed filename returned from its Name method
 // or -1 in case of no match.
diff --git a/memfile.go b/memfile.go
index 8eea130..e32f6ac 100644
--- a/memfile.go
+++ b/memfile.go
@@ -134,18 +134,6 @@ func ReadAllMemFile(ctx context.Context, r io.Reader, name string) (MemFile, err
 	return MemFile{FileName: name, FileData: data}, nil
 }
 
-// MemFilesAsFileReaders converts []MemFile to []FileReader
-func MemFilesAsFileReaders(memFiles []MemFile) []FileReader {
-	if len(memFiles) == 0 {
-		return nil
-	}
-	fileReaders := make([]FileReader, len(memFiles))
-	for i, memFile := range memFiles {
-		fileReaders[i] = memFile
-	}
-	return fileReaders
-}
-
 // String returns the metadata of the file formatted as a string.
 // String implements the fmt.Stringer interface.
 func (f MemFile) String() string {