From 544ef18a8cb9949fcb8833c6d2816783c90f3318 Mon Sep 17 00:00:00 2001
From: xuri <xuri.me@gmail.com>
Date: Mon, 5 Jul 2021 00:03:56 +0800
Subject: - Support concurrency iterate rows and columns - Rename exported
 field `File.XLSX` to `File.Pkg` - Exported error message

---
 col.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'col.go')

diff --git a/col.go b/col.go
index 2fd90b2..91ca3da 100644
--- a/col.go
+++ b/col.go
@@ -199,8 +199,11 @@ func (f *File) Cols(sheet string) (*Cols, error) {
 	if !ok {
 		return nil, ErrSheetNotExist{sheet}
 	}
-	if f.Sheet[name] != nil {
-		output, _ := xml.Marshal(f.Sheet[name])
+	if ws, ok := f.Sheet.Load(name); ok && ws != nil {
+		worksheet := ws.(*xlsxWorksheet)
+		worksheet.Lock()
+		defer worksheet.Unlock()
+		output, _ := xml.Marshal(worksheet)
 		f.saveFileList(name, f.replaceNameSpaceBytes(name, output))
 	}
 	var colIterator columnXMLIterator
-- 
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