This closes #1379, cleanup stream writer temporary files by the `Close` function

- Fix error on inserting columns or rows on the worksheet which contains one cell merged cell range
- Fix getting incomplete rich text cell value in some cases
- Unit tests updated

adjust.go

@@ -278,7 +278,11 @@ func (f *File) adjustMergeCells(ws *xlsxWorksheet, dir adjustDirection, num, off
 
 	for i := 0; i < len(ws.MergeCells.Cells); i++ {
 		mergedCells := ws.MergeCells.Cells[i]
-		coordinates, err := rangeRefToCoordinates(mergedCells.Ref)
+		mergedCellsRef := mergedCells.Ref
+		if !strings.Contains(mergedCellsRef, ":") {
+			mergedCellsRef += ":" + mergedCellsRef
+		}
+		coordinates, err := rangeRefToCoordinates(mergedCellsRef)
 		if err != nil {
 			return err
 		}

adjust_test.go

@@ -47,6 +47,15 @@ func TestAdjustMergeCells(t *testing.T) {
 			},
 		},
 	}, columns, 1, -1))
+	assert.NoError(t, f.adjustMergeCells(&xlsxWorksheet{
+		MergeCells: &xlsxMergeCells{
+			Cells: []*xlsxMergeCell{
+				{
+					Ref: "A2",
+				},
+			},
+		},
+	}, columns, 1, -1))
 
 	// testing adjustMergeCells
 	var cases []struct {

cell.go

@@ -152,20 +152,20 @@ func (f *File) SetCellValue(sheet, cell string, value interface{}) error {
 
 // String extracts characters from a string item.
 func (x xlsxSI) String() string {
-	if len(x.R) > 0 {
+	var value strings.Builder
-		var rows strings.Builder
+	if x.T != nil {
+		value.WriteString(x.T.Val)
+	}
 	for _, s := range x.R {
 		if s.T != nil {
-				rows.WriteString(s.T.Val)
+			value.WriteString(s.T.Val)
 		}
 	}
-		return bstrUnmarshal(rows.String())
+	if value.Len() == 0 {
-	}
-	if x.T != nil {
-		return bstrUnmarshal(x.T.Val)
-	}
 		return ""
 	}
+	return bstrUnmarshal(value.String())
+}
 
 // hasValue determine if cell non-blank value.
 func (c *xlsxC) hasValue() bool {

file.go

@@ -97,6 +97,9 @@ func (f *File) Close() error {
 		}
 		return true
 	})
+	for _, stream := range f.streams {
+		_ = stream.rawData.Close()
+	}
 	return err
 }
 
@@ -195,7 +198,6 @@ func (f *File) writeToZip(zw *zip.Writer) error {
 		if err != nil {
 			return err
 		}
-		_ = stream.rawData.Close()
 	}
 	var err error
 	f.Pkg.Range(func(path, content interface{}) bool {

stream.go

@@ -48,6 +48,11 @@ type StreamWriter struct {
 // with numbers and style:
 //
 //	file := excelize.NewFile()
+//	defer func() {
+//	    if err := file.Close(); err != nil {
+//	        fmt.Println(err)
+//	    }
+//	}()
 //	streamWriter, err := file.NewStreamWriter("Sheet1")
 //	if err != nil {
 //	    fmt.Println(err)

stream_test.go

@@ -15,7 +15,11 @@ import (
 
 func BenchmarkStreamWriter(b *testing.B) {
 	file := NewFile()
-
+	defer func() {
+		if err := file.Close(); err != nil {
+			b.Error(err)
+		}
+	}()
 	row := make([]interface{}, 10)
 	for colID := 0; colID < 10; colID++ {
 		row[colID] = colID
@@ -78,6 +82,7 @@ func TestStreamWriter(t *testing.T) {
 
 	// Test set cell column overflow.
 	assert.ErrorIs(t, streamWriter.SetRow("XFD51201", []interface{}{"A", "B", "C"}), ErrColumnNumber)
+	assert.NoError(t, file.Close())
 
 	// Test close temporary file error.
 	file = NewFile()
@@ -107,6 +112,7 @@ func TestStreamWriter(t *testing.T) {
 	file.Pkg.Store("xl/worksheets/sheet1.xml", MacintoshCyrillicCharset)
 	_, err = file.NewStreamWriter("Sheet1")
 	assert.EqualError(t, err, "xml decode error: XML syntax error on line 1: invalid UTF-8")
+	assert.NoError(t, file.Close())
 
 	// Test read cell.
 	file = NewFile()
@@ -138,6 +144,9 @@ func TestStreamWriter(t *testing.T) {
 
 func TestStreamSetColWidth(t *testing.T) {
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	streamWriter, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	assert.NoError(t, streamWriter.SetColWidth(3, 2, 20))
@@ -150,6 +159,9 @@ func TestStreamSetColWidth(t *testing.T) {
 
 func TestStreamSetPanes(t *testing.T) {
 	file, paneOpts := NewFile(), `{"freeze":true,"split":false,"x_split":1,"y_split":0,"top_left_cell":"B1","active_pane":"topRight","panes":[{"sqref":"K16","active_cell":"K16","pane":"topRight"}]}`
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	streamWriter, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	assert.NoError(t, streamWriter.SetPanes(paneOpts))
@@ -160,6 +172,9 @@ func TestStreamSetPanes(t *testing.T) {
 
 func TestStreamTable(t *testing.T) {
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	streamWriter, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 
@@ -194,6 +209,9 @@ func TestStreamTable(t *testing.T) {
 
 func TestStreamMergeCells(t *testing.T) {
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	streamWriter, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	assert.NoError(t, streamWriter.MergeCell("A1", "D1"))
@@ -207,6 +225,9 @@ func TestStreamMergeCells(t *testing.T) {
 func TestNewStreamWriter(t *testing.T) {
 	// Test error exceptions
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	_, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	_, err = file.NewStreamWriter("SheetN")
@@ -223,6 +244,9 @@ func TestStreamMarshalAttrs(t *testing.T) {
 func TestStreamSetRow(t *testing.T) {
 	// Test error exceptions
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	streamWriter, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	assert.EqualError(t, streamWriter.SetRow("A", []interface{}{}), newCellNameToCoordinatesError("A", newInvalidCellNameError("A")).Error())
@@ -233,6 +257,9 @@ func TestStreamSetRow(t *testing.T) {
 
 func TestStreamSetRowNilValues(t *testing.T) {
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	streamWriter, err := file.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	assert.NoError(t, streamWriter.SetRow("A1", []interface{}{nil, nil, Cell{Value: "foo"}}))
@@ -244,6 +271,9 @@ func TestStreamSetRowNilValues(t *testing.T) {
 
 func TestStreamSetRowWithStyle(t *testing.T) {
 	file := NewFile()
+	defer func() {
+		assert.NoError(t, file.Close())
+	}()
 	zeroStyleID := 0
 	grayStyleID, err := file.NewStyle(&Style{Font: &Font{Color: "#777777"}})
 	assert.NoError(t, err)
@@ -273,6 +303,9 @@ func TestStreamSetRowWithStyle(t *testing.T) {
 
 func TestStreamSetCellValFunc(t *testing.T) {
 	f := NewFile()
+	defer func() {
+		assert.NoError(t, f.Close())
+	}()
 	sw, err := f.NewStreamWriter("Sheet1")
 	assert.NoError(t, err)
 	c := &xlsxC{}