Dir listing with recursion

src/file/file.odin

@@ -25,7 +25,7 @@ DirectoryEntry :: struct #all_or_none {
 
 // -----------------------------------------
 
-list_dir_by_path :: proc(path: string) -> []DirectoryEntry {
+list_dir_by_path :: proc(path: string) -> [dynamic]DirectoryEntry {
 	if !os.is_dir(path) {
 		fmt.eprintln("error: path is not a directory:", path)
 		os.exit(1)
@@ -38,21 +38,25 @@ list_dir_by_path :: proc(path: string) -> []DirectoryEntry {
 	}
 	defer os.close(f)
 
-	return list_dir_impl(f)
+	result := [dynamic]DirectoryEntry{}
+	list_dir_impl(f, &result)
+	return result
 }
 
-list_dir :: proc(f: ^os.File) -> []DirectoryEntry {
+list_dir :: proc(f: ^os.File) -> [dynamic]DirectoryEntry {
 	path := os.name(f)
 	if !os.is_dir(path) {
 		fmt.eprintln("error: path is not a directory:", path)
 		os.exit(1)
 	}
 
-	return list_dir_impl(f)
+	result := [dynamic]DirectoryEntry{}
+	list_dir_impl(f, &result)
+	return result
 }
 
 @(private)
-list_dir_impl :: proc(f: ^os.File) -> []DirectoryEntry {
+list_dir_impl :: proc(f: ^os.File, builder: ^[dynamic]DirectoryEntry) {
 	entries, read_err := os.read_all_directory(f, context.allocator)
 	if read_err != nil {
 		fmt.eprintln("error: read directory failed:", read_err)
@@ -60,6 +64,9 @@ list_dir_impl :: proc(f: ^os.File) -> []DirectoryEntry {
 	}
 	defer delete(entries)
 
+	// Reserve space for new entries
+	reserve(builder, cap(builder) + len(entries))
+
 	working_dir, wd_err := os.get_working_directory(context.allocator)
 	if wd_err != nil {
 		fmt.eprintln("error: get working directory failed:", wd_err)
@@ -67,8 +74,9 @@ list_dir_impl :: proc(f: ^os.File) -> []DirectoryEntry {
 	}
 	defer delete(working_dir)
 
-	result := make([]DirectoryEntry, len(entries))
 	for entry, i in entries {
+
+		if entry.type == os.File_Type.Regular {
 			relpath, rel_err := strings.replace(
 				entry.fullpath,
 				working_dir,
@@ -76,10 +84,22 @@ list_dir_impl :: proc(f: ^os.File) -> []DirectoryEntry {
 				1,
 				context.allocator,
 			)
-		result[i] = DirectoryEntry{relpath = relpath, size = entry.size}
+			append(
+				builder,
+				DirectoryEntry{relpath = relpath, size = entry.size},
+			)
 		}
 
-	return result
+		if entry.type == os.File_Type.Directory {
+			dir, dir_err := os.open(entry.fullpath, {.Read})
+			if dir_err != nil {
+				fmt.eprintln("error: open directory failed:", dir_err)
+				os.exit(1)
+			}
+			defer os.close(dir)
+			list_dir_impl(dir, builder) // recurse into directory
+		}
+	}
 }
 
 read_by_path :: proc(path: string) -> []u8 {

src/main.odin

@@ -19,6 +19,6 @@ main :: proc() {
 	fmt.println("size:", asset.size)
 	fmt.println("data:", asset.data)
 
-	entries := file.list_dir_by_path("./build")
+	entries := file.list_dir_by_path("./src")
 	fmt.println("entries:", entries)
 }