This closes #1463, add new functions SetSheetDimension and GetSheetDimension (#1467)

Author: Josh-Weston

sheet.go

@@ -1883,3 +1883,52 @@ func makeContiguousColumns(ws *xlsxWorksheet, fromRow, toRow, colCount int) {
 		fillColumns(rowData, colCount, fromRow)
 	}
 }
+
+// SetSheetDimension provides the method to set or remove the used range of the
+// worksheet by a given range reference. It specifies the row and column bounds
+// of used cells in the worksheet. The range reference is set using the A1
+// reference style(e.g., "A1:D5"). Passing an empty range reference will remove
+// the used range of the worksheet.
+func (f *File) SetSheetDimension(sheet string, rangeRef string) error {
+	ws, err := f.workSheetReader(sheet)
+	if err != nil {
+		return err
+	}
+	// Remove the dimension element if an empty string is provided
+	if rangeRef == "" {
+		ws.Dimension = nil
+		return nil
+	}
+	parts := len(strings.Split(rangeRef, ":"))
+	if parts == 1 {
+		_, _, err = CellNameToCoordinates(rangeRef)
+		if err == nil {
+			ws.Dimension = &xlsxDimension{Ref: strings.ToUpper(rangeRef)}
+		}
+		return err
+	}
+	if parts != 2 {
+		return ErrParameterInvalid
+	}
+	coordinates, err := rangeRefToCoordinates(rangeRef)
+	if err != nil {
+		return err
+	}
+	_ = sortCoordinates(coordinates)
+	ref, err := f.coordinatesToRangeRef(coordinates)
+	ws.Dimension = &xlsxDimension{Ref: ref}
+	return err
+}
+
+// SetSheetDimension provides the method to get the used range of the worksheet.
+func (f *File) GetSheetDimension(sheet string) (string, error) {
+	var ref string
+	ws, err := f.workSheetReader(sheet)
+	if err != nil {
+		return ref, err
+	}
+	if ws.Dimension != nil {
+		ref = ws.Dimension.Ref
+	}
+	return ref, err
+}

sheet_test.go

@@ -644,3 +644,51 @@ func TestCheckSheetName(t *testing.T) {
 	assert.EqualError(t, checkSheetName("'Sheet"), ErrSheetNameSingleQuote.Error())
 	assert.EqualError(t, checkSheetName("Sheet'"), ErrSheetNameSingleQuote.Error())
 }
+
+func TestSheetDimension(t *testing.T) {
+	f := NewFile()
+	const sheetName = "Sheet1"
+	// Test get a new worksheet dimension
+	dimension, err := f.GetSheetDimension(sheetName)
+	assert.NoError(t, err)
+	assert.Equal(t, "A1", dimension)
+	// Test remove the worksheet dimension
+	assert.NoError(t, f.SetSheetDimension(sheetName, ""))
+	assert.NoError(t, err)
+	dimension, err = f.GetSheetDimension(sheetName)
+	assert.NoError(t, err)
+	assert.Equal(t, "", dimension)
+	// Test set the worksheet dimension
+	for _, excepted := range []string{"A1", "A1:D5", "A1:XFD1048576", "a1", "A1:d5"} {
+		err = f.SetSheetDimension(sheetName, excepted)
+		assert.NoError(t, err)
+		dimension, err := f.GetSheetDimension(sheetName)
+		assert.NoError(t, err)
+		assert.Equal(t, strings.ToUpper(excepted), dimension)
+	}
+	// Test set the worksheet dimension with invalid range reference or no exists worksheet
+	for _, c := range []struct {
+		sheetName string
+		rangeRef  string
+		err       string
+	}{
+		{"Sheet1", "A-1", "cannot convert cell \"A-1\" to coordinates: invalid cell name \"A-1\""},
+		{"Sheet1", "A1:B-1", "cannot convert cell \"B-1\" to coordinates: invalid cell name \"B-1\""},
+		{"Sheet1", "A1:XFD1048577", "row number exceeds maximum limit"},
+		{"Sheet1", "123", "cannot convert cell \"123\" to coordinates: invalid cell name \"123\""},
+		{"Sheet1", "A:B", "cannot convert cell \"A\" to coordinates: invalid cell name \"A\""},
+		{"Sheet1", ":B10", "cannot convert cell \"\" to coordinates: invalid cell name \"\""},
+		{"Sheet1", "XFE1", "the column number must be greater than or equal to 1 and less than or equal to 16384"},
+		{"Sheet1", "A1048577", "row number exceeds maximum limit"},
+		{"Sheet1", "ZZZ", "cannot convert cell \"ZZZ\" to coordinates: invalid cell name \"ZZZ\""},
+		{"SheetN", "A1", "sheet SheetN does not exist"},
+		{"Sheet1", "A1:B3:D5", ErrParameterInvalid.Error()},
+	} {
+		err = f.SetSheetDimension(c.sheetName, c.rangeRef)
+		assert.EqualError(t, err, c.err)
+	}
+	// Test get the worksheet dimension no exists worksheet
+	dimension, err = f.GetSheetDimension("SheetN")
+	assert.Empty(t, dimension)
+	assert.EqualError(t, err, "sheet SheetN does not exist")
+}