We are pleased to announce the release of version 2.7.0. Featured are a handful of new areas of functionality and numerous bug fixes.

A summary of changes is available in the Release Notes. A full list of changes is available in the changelog.

Release Notes

The most notable changes in this release are:

Breaking Change

• Upgrade requirements Go language version is 1.16 or later, for migration of deprecation package ioutil
• Checking and return error for invalid sheet name instead of trim invalid characters
• The GetCellStyle function no longer return master cell style of the merge cell range
• Rename 5 exported data types and error constant:
  • Rename PivotTableOption to PivotTableOptions
  • Rename FormatHeaderFooter to HeaderFooterOptions
  • Rename FormatSheetProtection to SheetProtectionOptions
  • Rename SparklineOption to SparklineOptions
  • Rename ErrExistsWorksheet to ErrExistsSheet
• Remove 54 exported types: AutoPageBreaks, BaseColWidth, BlackAndWhite, CodeName, CustomHeight, Date1904, DefaultColWidth, DefaultGridColor, DefaultRowHeight, EnableFormatConditionsCalculation, FilterPrivacy, FirstPageNumber, FitToHeight, FitToPage, FitToWidth, OutlineSummaryBelow, PageLayoutOption, PageLayoutOptionPtr, PageLayoutOrientation, PageLayoutPaperSize, PageLayoutScale, PageMarginBottom, PageMarginFooter, PageMarginHeader, PageMarginLeft, PageMarginRight, PageMarginsOptions, PageMarginsOptionsPtr, PageMarginTop, Published, RightToLeft, SheetFormatPrOptions, SheetFormatPrOptionsPtr, SheetPrOption, SheetPrOptionPtr, SheetViewOption, SheetViewOptionPtr, ShowFormulas, ShowGridLines, ShowRowColHeaders, ShowRuler, ShowZeros, TabColorIndexed, TabColorRGB, TabColorTheme, TabColorTint, ThickBottom, ThickTop, TopLeftCell, View, WorkbookPrOption, WorkbookPrOptionPtr, ZeroHeight and ZoomScale
• Remove 2 exported constants: OrientationPortrait and OrientationLandscape
• Change 21 functions signature:
  • Change the func (f *File) SetPageLayout(sheet string, opts ...PageLayoutOption) error to func (f *File) SetPageLayout(sheet string, opts *PageLayoutOptions) error
  • Change the func (f *File) GetPageLayout(sheet string, opts ...PageLayoutOptionPtr) error to func (f *File) GetPageLayout(sheet string) (PageLayoutOptions, error)
  • Change the func (f *File) SetPageMargins(sheet string, opts ...PageMarginsOptions) error to func (f *File) SetPageMargins(sheet string, opts *PageLayoutMarginsOptions) error
  • Change the func (f *File) GetPageMargins(sheet string, opts ...PageMarginsOptionsPtr) error to func (f *File) GetPageMargins(sheet string) (PageLayoutMarginsOptions, error)
  • Change the func (f *File) GetSheetIndex(sheet string) int to func (f *File) GetSheetIndex(sheet string) (int, error)
  • Change the func (f *File) SetSheetName(source, target string) to func (f *File) SetSheetName(source, target string) error
  • Change the func (f *File) GetSheetVisible(sheet string) to func (f *File) GetSheetVisible(sheet string) (bool, error)
  • Change the func (f *File) DeleteSheet(sheet string) to func (f *File) DeleteSheet(sheet string) error
  • Change the func (f *File) NewSheet(sheet string) int to func (f *File) NewSheet(sheet string) (int, error)
  • Change the func (f *File) NewConditionalStyle(style string) (int, error) to func (f *File) NewConditionalStyle(style *Style) (int, error)
  • Change the func (f *File) NewStyle(style interface{}) (int, error) to func (f *File) NewStyle(style *Style) (int, error)
  • Change the func (f *File) AddChart(sheet, cell, opts string, combo ...string) error to func (f *File) AddChart(sheet, cell string, chart *ChartOptions, combo ...*ChartOptions) error
  • Change the func (f *File) AddChartSheet(sheet, opts string, combo ...string) error to func (f *File) AddChartSheet(sheet string, chart *ChartOptions, combo ...*ChartOptions) error
  • Change the func (f *File) AddShape(sheet, cell, opts string) error to func (f *File) AddShape(sheet, cell string, opts *Shape) error
  • Change the func (f *File) AddPicture(sheet, cell, picture, format string) error to func (f *File) AddPicture(sheet, cell, picture string, opts *GraphicOptions) error
  • Change the func (f *File) AddPictureFromBytes(sheet, cell, opts, name, extension string, file []byte) error to func (f *File) AddPictureFromBytes(sheet, cell, name, extension string, file []byte, opts *GraphicOptions) error
  • Change the func (f *File) AddTable(sheet, hCell, vCell, opts string) error to func (f *File) AddTable(sheet, rangeRef string, opts *TableOptions) error
  • Change the func (sw *StreamWriter) AddTable(hCell, vCell, opts string) error to func (sw *StreamWriter) AddTable(rangeRef string, opts *TableOptions) error
  • Change the func (f *File) AutoFilter(sheet, hCell, vCell, opts string) error to func (f *File) AutoFilter(sheet, rangeRef string, opts *AutoFilterOptions) error
  • Change the func (f *File) SetPanes(sheet, panes string) error to func (f *File) SetPanes(sheet string, panes *Panes) error
  • Change the func (f *File) SetConditionalFormat(sheet, reference, opts string) error to func (f *File) SetConditionalFormat(sheet, rangeRef string, opts []ConditionalFormatOptions) error
• Introduce new function to instead of existing functions:
  • Use SetSheetProps instead of SetSheetPrOptions and SetSheetFormatPr
  • Use GetSheetProps instead of GetSheetPrOptions and GetSheetFormatPr
  • Use SetSheetView instead of SetSheetViewOptions
  • Use GetSheetView instead of GetSheetViewOptions
  • Use SetWorkbookProps instead of SetWorkbookPrOptions
  • Use GetWorkbookProps instead of GetWorkbookPrOptions
  • Use InsertRows instead of InsertRow for support inserting multiple rows at once
  • Use InsertCols instead of InsertCol for support inserting multiple columns at once
• Add CellTypeFormula, CellTypeInlineString, CellTypeSharedString and remove CellTypeString in CellType enumeration
• The parameter has been changed for the AddComment function, support create rich-text in comments, related issue #1204
• Remove internal error log print, an error will be returned when XML deserialize error, add error return value for the GetComments, GetDefaultFont and SetDefaultFont functions

Notable Features

• Add new functions GetDataValidations and GetConditionalFormats for get data validations and conditional formats, related issue #827
• Add new functions ProtectWorkbook and UnprotectWorkbook for workbook protection supports
• Add new function SetSheetCol for set worksheet column cells, related issue #1247
• Add new function GetColStyle for set column styles, related issue #1293
• Add new function SetSheetBackgroundFromBytes for set background picture by given image data, related issue #1405
• Add new export variable IndexedColorMapping
• Add 20 export types: AutoFilterListOptions, AutoFilterOptions, Chart, ChartAxis, ChartDimension, ChartLegend, ChartLine, ChartMarker, ChartPlotArea, ChartSeries, ChartTitle, ConditionalFormatOptions, PaneOptions, Panes, GraphicOptions, Shape, ShapeColor, ShapeLine, ShapeParagraph and TableOptions
• New support 2 formula functions: AGGREGATE and SUBTOTAL
• The Save, Write and WriteTo function now accept saving options, related issue #744
• The AddChart function support specify if smooth line of the line chart, related issue #1290
• The AddChart function support set custom line color in the charts, related issue #1345
• The AddChart function support custom chart axis font style, related issue #320
• The AddChart function support create 3D line chart
• The functions SetColWidth, GetColWidth, SetColVisible, GetColVisible, SetColStyle and GetColStyle now support concurrency safe
• An error will be returned when set the not exist style ID, related issue #1323
• An error will be returned when setting the stream row without ascending row numbers, to avoid potential mistakes, related issue #1139
• The stream writer will be apply style in RowOpts for each cell, related issue #1354
• The stream writer support to set panes, related issue #1047
• The stream writer support to set inline rich text cell
• The stream writer support to insert the page break
• New 7 exported errors: ErrUnprotectWorkbook, ErrUnprotectWorkbookPassword, ErrStreamSetPanes, ErrSheetNameBlank, ErrSheetNameInvalid, ErrSheetNameLength and ErrSheetNameSingleQuote has been added
• Introduce 5 new export data types: HeaderFooterOptions, PageLayoutMarginsOptions, PageLayoutOptions, SheetPropsOptions, and ViewOptions
• Support to set summary columns to appear to the right of detail in an outline
• Support to set and get font color with theme and tint, related issue #1369
• Support get cell value which contains a date in the ISO 8601 format
• Support set and get font color with indexed color
• Support update column style when inserting or deleting columns
• The workbook Close function now support cleanup stream writer temporary files
• The AddPicture function now allowing insert SVG format images

Improve the Compatibility

• Stream writer writes inline string type for string cell value, related issue #1377
• Skip empty rows when saving the spreadsheet to reduce file size, related issue #1383

Bug Fixes

• Fix decimal number format round issue with build-in number format, resolve issue #1328, #1368 and #1373
• Fix apply AM/PM number format issue in some case, resolve issue #1338
• Fix the panic when delete comments caused by slice bounds out of range, resolve issue #1343
• Fix the panic when get cell value in some case, resolve issue #1384 and #1415
• Fix default number format parse issue with a long string of digits, resolve issue #1360
• Fix creating a sheet with an empty name cause a corrupted file, resolve issue #1361
• Fix get image content was empty after inserting image
• Fix generate workbook corruption after insert columns/rows in some case
• Delete shared formula in calc chain when writing a formula cell, to fix generate workbook corruption in some case
• Normalize the sheet name to fix behavior regression between 2.6.0 & 2.6.1, resolve issue #1365
• Fix the formula calculation result issue of the OR function
• Fix error on inserting columns or rows on the worksheet which contains one cell merged cell range
• Fix error on getting the range of merged cells on the worksheet which contains one cell merged cell range
• Fix getting incomplete rich text cell value in some cases
• Escape XML characters for stream writer to avoid with corrupt file, resolve issue #1391
• Fix formula function ADDRESS result error with empty worksheet name, resolve issue #1396
• Fix insert picture problem in some cases, resolve issue #1404

Performance

• Improve performance for stream writer merging cells, time cost decrease over 90% and reduce memory usage by about 86% at most
• Improving performance for stream writer SetRow function, reduces memory usage over and speedup about 19%

Miscellaneous

• The dependencies module has been updated
• Unit tests and godoc updated
• Using the specialized name in variables and functions
• Documentation website with multilingual: Arabic, German, Spanish, English, French, Russian, Chinese, Japanese, and Korean, which has been updated

Thank you

Thanks for all the contributors to Excelize. Below is a list of contributors that have code contributions in this version:

• @cdenicola (Cooper de Nicola)
• @chenliu1993
• @davidborry
• @patsak (Kostya Privezentsev)
• @dafengge0913
• @Beeb0p (Artem Tarasenko)
• @invzhi
• @zhangzitao (Zitao)
• @jtwatson (Joseph Watson)
• @carbin-gun (charles.deng)
• @harrison3000 (Harrison)
• @strivek (GaoFei)
• @gonghaibinx
• @martinmr (Martin Martinez Rivera)
• @zclark (Zach Clark)
• @March0715 (March)
• @renxiaotu
• @devloppper
• @jianxinhou
• @nesstord
• @Bayzet (Bayzet Tlyupov)
• @guoweikuang (郭伟匡)
• @qinyuguang (Gin)
• @liron-l (Liron Levin)