refactor: handler error instead of panic,

Exported functions:

SetCellStyle
InsertCol
RemoveCol
RemoveRow
InsertRow
DuplicateRow
DuplicateRowTo
SetRowHeight
GetRowHeight
GetCellValue
GetCellFormula
GetCellHyperLink
SetCellHyperLink
SetCellInt
SetCellBool
SetCellFloat
SetCellStr
SetCellDefault
GetCellStyle
SetCellValue
MergeCell
SetSheetRow
SetRowVisible
GetRowVisible
SetRowOutlineLevel
GetRowOutlineLevel
GetRows
Columns
SearchSheet
AddTable
GetPicture
AutoFilter
GetColVisible
SetColVisible
GetColOutlineLevel
SetColOutlineLevel
SetColWidth
GetColWidth

inner functions:

adjustHelper
adjustMergeCells
adjustAutoFilter
prepareCell
setDefaultTimeStyle
timeToExcelTime
addDrawingChart
addDrawingVML
addDrawingPicture
getTotalRowsCols
checkRow
addDrawingShape
addTable

.gitignore

@@ -1,5 +1,4 @@
 ~$*.xlsx
 test/Test*.xlsx
 *.out
-test/image3.png
 *.test

README.md

@@ -15,11 +15,6 @@
 
 Excelize is a library written in pure Go and providing a set of functions that allow you to write to and read from XLSX files. Support reads and writes XLSX file generated by Microsoft Excel™ 2007 and later. Support save file without losing original charts of XLSX. This library needs Go version 1.8 or later. The full API docs can be seen using go's built-in documentation tool, or online at [godoc.org](https://godoc.org/github.com/360EntSecGroup-Skylar/excelize) and [docs reference](https://xuri.me/excelize/).
 
-**WARNING!**
-
-From version 1.5.0 all row manipulation methods uses Excel row numbering starting with `1` instead of zero-based numbering
-which take place in some methods in eraler versions.
-
 ## Basic Usage
 
 ### Installation
@@ -123,7 +118,6 @@ func main() {
         fmt.Println(err)
     }
 }
-
 ```
 
 ### Add picture to XLSX file

README_zh.md

@@ -15,10 +15,6 @@
 
 Excelize 是 Go 语言编写的用于操作 Office Excel 文档类库，基于 ECMA-376 Office OpenXML 标准。可以使用它来读取、写入由 Microsoft Excel™ 2007 及以上版本创建的 XLSX 文档。相比较其他的开源类库，Excelize 支持写入原本带有图片(表)、透视表和切片器等复杂样式的文档，还支持向 Excel 文档中插入图片与图表，并且在保存后不会丢失文档原有样式，可以应用于各类报表系统中。使用本类库要求使用的 Go 语言为 1.8 或更高版本，完整的 API 使用文档请访问 [godoc.org](https://godoc.org/github.com/360EntSecGroup-Skylar/excelize) 或查看 [参考文档](https://xuri.me/excelize/)。
 
-**重要提示**
-
-从版本 1.5.0 开始，所有行操作方法都使用从 `1` 开始的 Excel 行编号，早期版本中某些方法中的基于 `0` 的行编号将不再使用。
-
 ## 快速上手
 
 ### 安装

adjust.go

@@ -30,7 +30,7 @@ const (
 // TODO: adjustCalcChain, adjustPageBreaks, adjustComments,
 // adjustDataValidations, adjustProtectedCells
 //
-func (f *File) adjustHelper(sheet string, dir adjustDirection, num, offset int) {
+func (f *File) adjustHelper(sheet string, dir adjustDirection, num, offset int) error {
 	xlsx := f.workSheetReader(sheet)
 
 	if dir == rows {
@@ -39,11 +39,16 @@ func (f *File) adjustHelper(sheet string, dir adjustDirection, num, offset int)
 		f.adjustColDimensions(xlsx, num, offset)
 	}
 	f.adjustHyperlinks(xlsx, sheet, dir, num, offset)
-	f.adjustMergeCells(xlsx, dir, num, offset)
-	f.adjustAutoFilter(xlsx, dir, num, offset)
+	if err := f.adjustMergeCells(xlsx, dir, num, offset); err != nil {
+		return err
+	}
+	if err := f.adjustAutoFilter(xlsx, dir, num, offset); err != nil {
+		return err
+	}
 
 	checkSheet(xlsx)
 	checkRow(xlsx)
+	return nil
 }
 
 // adjustColDimensions provides a function to update column dimensions when
@@ -127,9 +132,9 @@ func (f *File) adjustHyperlinks(xlsx *xlsxWorksheet, sheet string, dir adjustDir
 
 // adjustAutoFilter provides a function to update the auto filter when
 // inserting or deleting rows or columns.
-func (f *File) adjustAutoFilter(xlsx *xlsxWorksheet, dir adjustDirection, num, offset int) {
+func (f *File) adjustAutoFilter(xlsx *xlsxWorksheet, dir adjustDirection, num, offset int) error {
 	if xlsx.AutoFilter == nil {
-		return
+		return nil
 	}
 
 	rng := strings.Split(xlsx.AutoFilter.Ref, ":")
@@ -138,12 +143,12 @@ func (f *File) adjustAutoFilter(xlsx *xlsxWorksheet, dir adjustDirection, num, o
 
 	firstCol, firstRow, err := CellNameToCoordinates(firstCell)
 	if err != nil {
-		panic(err)
+		return err
 	}
 
 	lastCol, lastRow, err := CellNameToCoordinates(lastCell)
 	if err != nil {
-		panic(err)
+		return err
 	}
 
 	if (dir == rows && firstRow == num && offset < 0) || (dir == columns && firstCol == num && lastCol == num) {
@@ -154,7 +159,7 @@ func (f *File) adjustAutoFilter(xlsx *xlsxWorksheet, dir adjustDirection, num, o
 				rowData.Hidden = false
 			}
 		}
-		return
+		return nil
 	}
 
 	if dir == rows {
@@ -171,13 +176,14 @@ func (f *File) adjustAutoFilter(xlsx *xlsxWorksheet, dir adjustDirection, num, o
 	}
 
 	xlsx.AutoFilter.Ref = firstCell + ":" + lastCell
+	return nil
 }
 
 // adjustMergeCells provides a function to update merged cells when inserting
 // or deleting rows or columns.
-func (f *File) adjustMergeCells(xlsx *xlsxWorksheet, dir adjustDirection, num, offset int) {
+func (f *File) adjustMergeCells(xlsx *xlsxWorksheet, dir adjustDirection, num, offset int) error {
 	if xlsx.MergeCells == nil {
-		return
+		return nil
 	}
 
 	for i, areaData := range xlsx.MergeCells.Cells {
@@ -187,12 +193,12 @@ func (f *File) adjustMergeCells(xlsx *xlsxWorksheet, dir adjustDirection, num, o
 
 		firstCol, firstRow, err := CellNameToCoordinates(firstCell)
 		if err != nil {
-			panic(err)
+			return err
 		}
 
 		lastCol, lastRow, err := CellNameToCoordinates(lastCell)
 		if err != nil {
-			panic(err)
+			return err
 		}
 
 		adjust := func(v int) int {
@@ -224,13 +230,14 @@ func (f *File) adjustMergeCells(xlsx *xlsxWorksheet, dir adjustDirection, num, o
 		}
 
 		if firstCell, err = CoordinatesToCellName(firstCol, firstRow); err != nil {
-			panic(err)
+			return err
 		}
 
 		if lastCell, err = CoordinatesToCellName(lastCol, lastRow); err != nil {
-			panic(err)
+			return err
 		}
 
 		areaData.Ref = firstCell + ":" + lastCell
 	}
+	return nil
 }