This closes #1819, formula calculation engine support array formulas

- Improve the defined name and table name validation rules
- Rename internal variable names to avoid the same with Go 1.21's built-in min and max functions
- Simplify data type conversion in internal code
- Update GitHub Actions workflow configuration, test on Go 1.22.x, and disable Go module cache
- Update dependencies module

.github/workflows/go.yml

@@ -5,7 +5,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.18.x, 1.19.x, 1.20.x, '>=1.21.1']
+        go-version: [1.18.x, 1.19.x, 1.20.x, '>=1.21.1', 1.22.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
         targetplatform: [x86, x64]
 
@@ -17,6 +17,7 @@ jobs:
       uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go-version }}
+        cache: false
 
     - name: Checkout code
       uses: actions/checkout@v4

calc.go

@@ -281,6 +281,10 @@ func (fa formulaArg) Value() (value string) {
 		return fmt.Sprintf("%g", fa.Number)
 	case ArgString:
 		return fa.String
+	case ArgMatrix:
+		if args := fa.ToList(); len(args) > 0 {
+			return args[0].Value()
+		}
 	case ArgError:
 		return fa.Error
 	}
@@ -299,6 +303,10 @@ func (fa formulaArg) ToNumber() formulaArg {
 		}
 	case ArgNumber:
 		n = fa.Number
+	case ArgMatrix:
+		if args := fa.ToList(); len(args) > 0 {
+			return args[0].ToNumber()
+		}
 	}
 	return newNumberFormulaArg(n)
 }
@@ -920,9 +928,14 @@ func newEmptyFormulaArg() formulaArg {
 //
 // TODO: handle subtypes: Nothing, Text, Logical, Error, Concatenation, Intersection, Union
 func (f *File) evalInfixExp(ctx *calcContext, sheet, cell string, tokens []efp.Token) (formulaArg, error) {
-	var err error
+	var (
-	opdStack, optStack, opfStack, opfdStack, opftStack, argsStack := NewStack(), NewStack(), NewStack(), NewStack(), NewStack(), NewStack()
+		err                             error
-	var inArray, inArrayRow bool
+		inArray, inArrayRow             bool
+		formulaArray                    [][]formulaArg
+		formulaArrayRow                 []formulaArg
+		opdStack, optStack, opfStack    = NewStack(), NewStack(), NewStack()
+		opfdStack, opftStack, argsStack = NewStack(), NewStack(), NewStack()
+	)
 	for i := 0; i < len(tokens); i++ {
 		token := tokens[i]
 
@@ -936,11 +949,11 @@ func (f *File) evalInfixExp(ctx *calcContext, sheet, cell string, tokens []efp.T
 		// function start
 		if isFunctionStartToken(token) {
 			if token.TValue == "ARRAY" {
-				inArray = true
+				inArray, formulaArray = true, [][]formulaArg{}
 				continue
 			}
 			if token.TValue == "ARRAYROW" {
-				inArrayRow = true
+				inArrayRow, formulaArrayRow = true, []formulaArg{}
 				continue
 			}
 			opfStack.Push(token)
@@ -1021,14 +1034,16 @@ func (f *File) evalInfixExp(ctx *calcContext, sheet, cell string, tokens []efp.T
 			}
 
 			if inArrayRow && isOperand(token) {
+				formulaArrayRow = append(formulaArrayRow, opfdStack.Pop().(formulaArg))
 				continue
 			}
 			if inArrayRow && isFunctionStopToken(token) {
+				formulaArray = append(formulaArray, formulaArrayRow)
 				inArrayRow = false
 				continue
 			}
 			if inArray && isFunctionStopToken(token) {
-				argsStack.Peek().(*list.List).PushBack(opfdStack.Pop())
+				argsStack.Peek().(*list.List).PushBack(newMatrixFormulaArg(formulaArray))
 				inArray = false
 				continue
 			}
@@ -1825,13 +1840,13 @@ func (fn *formulaFuncs) bassel(argsList *list.List, modfied bool) formulaArg {
 	if n.Type != ArgNumber {
 		return n
 	}
-	max, x1 := 100, x.Number*0.5
+	maxVal, x1 := 100, x.Number*0.5
 	x2 := x1 * x1
 	x1 = math.Pow(x1, n.Number)
 	n1, n2, n3, n4, add := fact(n.Number), 1.0, 0.0, n.Number, false
 	result := x1 / n1
 	t := result * 0.9
-	for result != t && max != 0 {
+	for result != t && maxVal != 0 {
 		x1 *= x2
 		n3++
 		n1 *= n3
@@ -1844,7 +1859,7 @@ func (fn *formulaFuncs) bassel(argsList *list.List, modfied bool) formulaArg {
 		} else {
 			result -= r
 		}
-		max--
+		maxVal--
 		add = !add
 	}
 	return newNumberFormulaArg(result)
@@ -2151,8 +2166,8 @@ func (fn *formulaFuncs) bitwise(name string, argsList *list.List) formulaArg {
 	if num1.Type != ArgNumber || num2.Type != ArgNumber {
 		return newErrorFormulaArg(formulaErrorNUM, formulaErrorNUM)
 	}
-	max := math.Pow(2, 48) - 1
+	maxVal := math.Pow(2, 48) - 1
-	if num1.Number < 0 || num1.Number > max || num2.Number < 0 || num2.Number > max {
+	if num1.Number < 0 || num1.Number > maxVal || num2.Number < 0 || num2.Number > maxVal {
 		return newErrorFormulaArg(formulaErrorNUM, formulaErrorNUM)
 	}
 	bitwiseFuncMap := map[string]func(a, b int) int{
@@ -6958,9 +6973,9 @@ func (fn *formulaFuncs) BETAdotINV(argsList *list.List) formulaArg {
 
 // incompleteGamma is an implementation of the incomplete gamma function.
 func incompleteGamma(a, x float64) float64 {
-	max := 32
+	maxVal := 32
 	summer := 0.0
-	for n := 0; n <= max; n++ {
+	for n := 0; n <= maxVal; n++ {
 		divisor := a
 		for i := 1; i <= n; i++ {
 			divisor *= a + float64(i)
@@ -7079,7 +7094,7 @@ func (fn *formulaFuncs) BINOMdotDISTdotRANGE(argsList *list.List) formulaArg {
 
 // binominv implement inverse of the binomial distribution calculation.
 func binominv(n, p, alpha float64) float64 {
-	q, i, sum, max := 1-p, 0.0, 0.0, 0.0
+	q, i, sum, maxVal := 1-p, 0.0, 0.0, 0.0
 	n = math.Floor(n)
 	if q > p {
 		factor := math.Pow(q, n)
@@ -7091,8 +7106,8 @@ func binominv(n, p, alpha float64) float64 {
 		return i
 	}
 	factor := math.Pow(p, n)
-	sum, max = 1-factor, n
+	sum, maxVal = 1-factor, n
-	for i = 0; i < max && sum >= alpha; i++ {
+	for i = 0; i < maxVal && sum >= alpha; i++ {
 		factor *= (n - i) / (i + 1) * q / p
 		sum -= factor
 	}
@@ -8078,10 +8093,13 @@ func (fn *formulaFuncs) FORECASTdotLINEAR(argsList *list.List) formulaArg {
 	return fn.pearsonProduct("FORECAST.LINEAR", 3, argsList)
 }
 
-// maritxToSortedColumnList convert matrix formula arguments to a ascending
+// matrixToSortedColumnList convert matrix formula arguments to a ascending
 // order list by column.
-func maritxToSortedColumnList(arg formulaArg) formulaArg {
+func matrixToSortedColumnList(arg formulaArg) formulaArg {
-	mtx, cols := []formulaArg{}, len(arg.Matrix[0])
+	var (
+		mtx  []formulaArg
+		cols = len(arg.Matrix[0])
+	)
 	for colIdx := 0; colIdx < cols; colIdx++ {
 		for _, row := range arg.Matrix {
 			cell := row[colIdx]
@@ -8120,14 +8138,14 @@ func (fn *formulaFuncs) FREQUENCY(argsList *list.List) formulaArg {
 		c                [][]formulaArg
 		i, j             int
 	)
-	if dataMtx = maritxToSortedColumnList(data); dataMtx.Type != ArgList {
+	if dataMtx = matrixToSortedColumnList(data); dataMtx.Type != ArgList {
 		return dataMtx
 	}
-	if binsMtx = maritxToSortedColumnList(bins); binsMtx.Type != ArgList {
+	if binsMtx = matrixToSortedColumnList(bins); binsMtx.Type != ArgList {
 		return binsMtx
 	}
 	for row := 0; row < len(binsMtx.List)+1; row++ {
-		rows := []formulaArg{}
+		var rows []formulaArg
 		for col := 0; col < 1; col++ {
 			rows = append(rows, newNumberFormulaArg(0))
 		}
@@ -8349,8 +8367,8 @@ func (fn *formulaFuncs) GEOMEAN(argsList *list.List) formulaArg {
 		return product
 	}
 	count := fn.COUNT(argsList)
-	min := fn.MIN(argsList)
+	minVal := fn.MIN(argsList)
-	if product.Number > 0 && min.Number > 0 {
+	if product.Number > 0 && minVal.Number > 0 {
 		return newNumberFormulaArg(math.Pow(product.Number, 1/count.Number))
 	}
 	return newErrorFormulaArg(formulaErrorNUM, formulaErrorNUM)
@@ -9055,7 +9073,7 @@ func (fn *formulaFuncs) HARMEAN(argsList *list.List) formulaArg {
 	if argsList.Len() < 1 {
 		return newErrorFormulaArg(formulaErrorVALUE, "HARMEAN requires at least 1 argument")
 	}
-	if min := fn.MIN(argsList); min.Number < 0 {
+	if minVal := fn.MIN(argsList); minVal.Number < 0 {
 		return newErrorFormulaArg(formulaErrorNA, formulaErrorNA)
 	}
 	number, val, cnt := 0.0, 0.0, 0.0
@@ -10002,7 +10020,7 @@ func (fn *formulaFuncs) MAX(argsList *list.List) formulaArg {
 	if argsList.Len() == 0 {
 		return newErrorFormulaArg(formulaErrorVALUE, "MAX requires at least 1 argument")
 	}
-	return fn.max(false, argsList)
+	return fn.maxValue(false, argsList)
 }
 
 // MAXA function returns the largest value from a supplied set of numeric
@@ -10015,7 +10033,7 @@ func (fn *formulaFuncs) MAXA(argsList *list.List) formulaArg {
 	if argsList.Len() == 0 {
 		return newErrorFormulaArg(formulaErrorVALUE, "MAXA requires at least 1 argument")
 	}
-	return fn.max(true, argsList)
+	return fn.maxValue(true, argsList)
 }
 
 // MAXIFS function returns the maximum value from a subset of values that are
@@ -10031,36 +10049,36 @@ func (fn *formulaFuncs) MAXIFS(argsList *list.List) formulaArg {
 		return newErrorFormulaArg(formulaErrorNA, formulaErrorNA)
 	}
 	var args []formulaArg
-	max, maxRange := -math.MaxFloat64, argsList.Front().Value.(formulaArg).Matrix
+	maxVal, maxRange := -math.MaxFloat64, argsList.Front().Value.(formulaArg).Matrix
 	for arg := argsList.Front().Next(); arg != nil; arg = arg.Next() {
 		args = append(args, arg.Value.(formulaArg))
 	}
 	for _, ref := range formulaIfsMatch(args) {
-		if num := maxRange[ref.Row][ref.Col].ToNumber(); num.Type == ArgNumber && max < num.Number {
+		if num := maxRange[ref.Row][ref.Col].ToNumber(); num.Type == ArgNumber && maxVal < num.Number {
-			max = num.Number
+			maxVal = num.Number
 		}
 	}
-	if max == -math.MaxFloat64 {
+	if maxVal == -math.MaxFloat64 {
-		max = 0
+		maxVal = 0
 	}
-	return newNumberFormulaArg(max)
+	return newNumberFormulaArg(maxVal)
 }
 
 // calcListMatrixMax is part of the implementation max.
-func calcListMatrixMax(maxa bool, max float64, arg formulaArg) float64 {
+func calcListMatrixMax(maxa bool, maxVal float64, arg formulaArg) float64 {
 	for _, cell := range arg.ToList() {
-		if cell.Type == ArgNumber && cell.Number > max {
+		if cell.Type == ArgNumber && cell.Number > maxVal {
 			if maxa && cell.Boolean || !cell.Boolean {
-				max = cell.Number
+				maxVal = cell.Number
 			}
 		}
 	}
-	return max
+	return maxVal
 }
 
-// max is an implementation of the formula functions MAX and MAXA.
+// maxValue is an implementation of the formula functions MAX and MAXA.
-func (fn *formulaFuncs) max(maxa bool, argsList *list.List) formulaArg {
+func (fn *formulaFuncs) maxValue(maxa bool, argsList *list.List) formulaArg {
-	max := -math.MaxFloat64
+	maxVal := -math.MaxFloat64
 	for token := argsList.Front(); token != nil; token = token.Next() {
 		arg := token.Value.(formulaArg)
 		switch arg.Type {
@@ -10069,29 +10087,29 @@ func (fn *formulaFuncs) max(maxa bool, argsList *list.List) formulaArg {
 				continue
 			} else {
 				num := arg.ToBool()
-				if num.Type == ArgNumber && num.Number > max {
+				if num.Type == ArgNumber && num.Number > maxVal {
-					max = num.Number
+					maxVal = num.Number
 					continue
 				}
 			}
 			num := arg.ToNumber()
-			if num.Type != ArgError && num.Number > max {
+			if num.Type != ArgError && num.Number > maxVal {
-				max = num.Number
+				maxVal = num.Number
 			}
 		case ArgNumber:
-			if arg.Number > max {
+			if arg.Number > maxVal {
-				max = arg.Number
+				maxVal = arg.Number
 			}
 		case ArgList, ArgMatrix:
-			max = calcListMatrixMax(maxa, max, arg)
+			maxVal = calcListMatrixMax(maxa, maxVal, arg)
 		case ArgError:
 			return arg
 		}
 	}
-	if max == -math.MaxFloat64 {
+	if maxVal == -math.MaxFloat64 {
-		max = 0
+		maxVal = 0
 	}
-	return newNumberFormulaArg(max)
+	return newNumberFormulaArg(maxVal)
 }
 
 // MEDIAN function returns the statistical median (the middle value) of a list
@@ -10145,7 +10163,7 @@ func (fn *formulaFuncs) MIN(argsList *list.List) formulaArg {
 	if argsList.Len() == 0 {
 		return newErrorFormulaArg(formulaErrorVALUE, "MIN requires at least 1 argument")
 	}
-	return fn.min(false, argsList)
+	return fn.minValue(false, argsList)
 }
 
 // MINA function returns the smallest value from a supplied set of numeric
@@ -10158,7 +10176,7 @@ func (fn *formulaFuncs) MINA(argsList *list.List) formulaArg {
 	if argsList.Len() == 0 {
 		return newErrorFormulaArg(formulaErrorVALUE, "MINA requires at least 1 argument")
 	}
-	return fn.min(true, argsList)
+	return fn.minValue(true, argsList)
 }
 
 // MINIFS function returns the minimum value from a subset of values that are
@@ -10174,36 +10192,36 @@ func (fn *formulaFuncs) MINIFS(argsList *list.List) formulaArg {
 		return newErrorFormulaArg(formulaErrorNA, formulaErrorNA)
 	}
 	var args []formulaArg
-	min, minRange := math.MaxFloat64, argsList.Front().Value.(formulaArg).Matrix
+	minVal, minRange := math.MaxFloat64, argsList.Front().Value.(formulaArg).Matrix
 	for arg := argsList.Front().Next(); arg != nil; arg = arg.Next() {
 		args = append(args, arg.Value.(formulaArg))
 	}
 	for _, ref := range formulaIfsMatch(args) {
-		if num := minRange[ref.Row][ref.Col].ToNumber(); num.Type == ArgNumber && min > num.Number {
+		if num := minRange[ref.Row][ref.Col].ToNumber(); num.Type == ArgNumber && minVal > num.Number {
-			min = num.Number
+			minVal = num.Number
 		}
 	}
-	if min == math.MaxFloat64 {
+	if minVal == math.MaxFloat64 {
-		min = 0
+		minVal = 0
 	}
-	return newNumberFormulaArg(min)
+	return newNumberFormulaArg(minVal)
 }
 
 // calcListMatrixMin is part of the implementation min.
-func calcListMatrixMin(mina bool, min float64, arg formulaArg) float64 {
+func calcListMatrixMin(mina bool, minVal float64, arg formulaArg) float64 {
 	for _, cell := range arg.ToList() {
-		if cell.Type == ArgNumber && cell.Number < min {
+		if cell.Type == ArgNumber && cell.Number < minVal {
 			if mina && cell.Boolean || !cell.Boolean {
-				min = cell.Number
+				minVal = cell.Number
 			}
 		}
 	}
-	return min
+	return minVal
 }
 
-// min is an implementation of the formula functions MIN and MINA.
+// minValue is an implementation of the formula functions MIN and MINA.
-func (fn *formulaFuncs) min(mina bool, argsList *list.List) formulaArg {
+func (fn *formulaFuncs) minValue(mina bool, argsList *list.List) formulaArg {
-	min := math.MaxFloat64
+	minVal := math.MaxFloat64
 	for token := argsList.Front(); token != nil; token = token.Next() {
 		arg := token.Value.(formulaArg)
 		switch arg.Type {
@@ -10212,29 +10230,29 @@ func (fn *formulaFuncs) min(mina bool, argsList *list.List) formulaArg {
 				continue
 			} else {
 				num := arg.ToBool()
-				if num.Type == ArgNumber && num.Number < min {
+				if num.Type == ArgNumber && num.Number < minVal {
-					min = num.Number
+					minVal = num.Number
 					continue
 				}
 			}
 			num := arg.ToNumber()
-			if num.Type != ArgError && num.Number < min {
+			if num.Type != ArgError && num.Number < minVal {
-				min = num.Number
+				minVal = num.Number
 			}
 		case ArgNumber:
-			if arg.Number < min {
+			if arg.Number < minVal {
-				min = arg.Number
+				minVal = arg.Number
 			}
 		case ArgList, ArgMatrix:
-			min = calcListMatrixMin(mina, min, arg)
+			minVal = calcListMatrixMin(mina, minVal, arg)
 		case ArgError:
 			return arg
 		}
 	}
-	if min == math.MaxFloat64 {
+	if minVal == math.MaxFloat64 {
-		min = 0
+		minVal = 0
 	}
-	return newNumberFormulaArg(min)
+	return newNumberFormulaArg(minVal)
 }
 
 // pearsonProduct is an implementation of the formula functions FORECAST,
@@ -13554,7 +13572,7 @@ func (fn *formulaFuncs) code(name string, argsList *list.List) formulaArg {
 //
 //	CONCAT(text1,[text2],...)
 func (fn *formulaFuncs) CONCAT(argsList *list.List) formulaArg {
-	return fn.concat("CONCAT", argsList)
+	return fn.concat(argsList)
 }
 
 // CONCATENATE function joins together a series of supplied text strings into
@@ -13562,12 +13580,12 @@ func (fn *formulaFuncs) CONCAT(argsList *list.List) formulaArg {
 //
 //	CONCATENATE(text1,[text2],...)
 func (fn *formulaFuncs) CONCATENATE(argsList *list.List) formulaArg {
-	return fn.concat("CONCATENATE", argsList)
+	return fn.concat(argsList)
 }
 
 // concat is an implementation of the formula functions CONCAT and
 // CONCATENATE.
-func (fn *formulaFuncs) concat(name string, argsList *list.List) formulaArg {
+func (fn *formulaFuncs) concat(argsList *list.List) formulaArg {
 	var buf bytes.Buffer
 	for arg := argsList.Front(); arg != nil; arg = arg.Next() {
 		for _, cell := range arg.Value.(formulaArg).ToList() {
@@ -13831,16 +13849,16 @@ func (fn *formulaFuncs) LENB(argsList *list.List) formulaArg {
 	if argsList.Len() != 1 {
 		return newErrorFormulaArg(formulaErrorVALUE, "LENB requires 1 string argument")
 	}
-	bytes := 0
+	result := 0
 	for _, r := range argsList.Front().Value.(formulaArg).Value() {
 		b := utf8.RuneLen(r)
 		if b == 1 {
-			bytes++
+			result++
 		} else if b > 1 {
-			bytes += 2
+			result += 2
 		}
 	}
-	return newNumberFormulaArg(float64(bytes))
+	return newNumberFormulaArg(float64(result))
 }
 
 // LOWER converts all characters in a supplied text string to lower case. The
@@ -14774,7 +14792,7 @@ func (fn *formulaFuncs) COLUMN(argsList *list.List) formulaArg {
 
 // calcColsRowsMinMax calculation min and max value for given formula arguments
 // sequence of the formula functions COLUMNS and ROWS.
-func calcColsRowsMinMax(cols bool, argsList *list.List) (min, max int) {
+func calcColsRowsMinMax(cols bool, argsList *list.List) (minVal, maxVal int) {
 	getVal := func(cols bool, cell cellRef) int {
 		if cols {
 			return cell.Col
@@ -14784,22 +14802,22 @@ func calcColsRowsMinMax(cols bool, argsList *list.List) (min, max int) {
 	if argsList.Front().Value.(formulaArg).cellRanges != nil && argsList.Front().Value.(formulaArg).cellRanges.Len() > 0 {
 		crs := argsList.Front().Value.(formulaArg).cellRanges
 		for cr := crs.Front(); cr != nil; cr = cr.Next() {
-			if min == 0 {
+			if minVal == 0 {
-				min = getVal(cols, cr.Value.(cellRange).From)
+				minVal = getVal(cols, cr.Value.(cellRange).From)
 			}
-			if max < getVal(cols, cr.Value.(cellRange).To) {
+			if maxVal < getVal(cols, cr.Value.(cellRange).To) {
-				max = getVal(cols, cr.Value.(cellRange).To)
+				maxVal = getVal(cols, cr.Value.(cellRange).To)
 			}
 		}
 	}
 	if argsList.Front().Value.(formulaArg).cellRefs != nil && argsList.Front().Value.(formulaArg).cellRefs.Len() > 0 {
 		cr := argsList.Front().Value.(formulaArg).cellRefs
 		for refs := cr.Front(); refs != nil; refs = refs.Next() {
-			if min == 0 {
+			if minVal == 0 {
-				min = getVal(cols, refs.Value.(cellRef))
+				minVal = getVal(cols, refs.Value.(cellRef))
 			}
-			if max < getVal(cols, refs.Value.(cellRef)) {
+			if maxVal < getVal(cols, refs.Value.(cellRef)) {
-				max = getVal(cols, refs.Value.(cellRef))
+				maxVal = getVal(cols, refs.Value.(cellRef))
 			}
 		}
 	}
@@ -14814,13 +14832,13 @@ func (fn *formulaFuncs) COLUMNS(argsList *list.List) formulaArg {
 	if argsList.Len() != 1 {
 		return newErrorFormulaArg(formulaErrorVALUE, "COLUMNS requires 1 argument")
 	}
-	min, max := calcColsRowsMinMax(true, argsList)
+	minVal, maxVal := calcColsRowsMinMax(true, argsList)
-	if max == MaxColumns {
+	if maxVal == MaxColumns {
 		return newNumberFormulaArg(float64(MaxColumns))
 	}
-	result := max - min + 1
+	result := maxVal - minVal + 1
-	if max == min {
+	if maxVal == minVal {
-		if min == 0 {
+		if minVal == 0 {
 			return newErrorFormulaArg(formulaErrorVALUE, "invalid reference")
 		}
 		return newNumberFormulaArg(float64(1))
@@ -15555,13 +15573,13 @@ func (fn *formulaFuncs) ROWS(argsList *list.List) formulaArg {
 	if argsList.Len() != 1 {
 		return newErrorFormulaArg(formulaErrorVALUE, "ROWS requires 1 argument")
 	}
-	min, max := calcColsRowsMinMax(false, argsList)
+	minVal, maxVal := calcColsRowsMinMax(false, argsList)
-	if max == TotalRows {
+	if maxVal == TotalRows {
 		return newNumberFormulaArg(TotalRows)
 	}
-	result := max - min + 1
+	result := maxVal - minVal + 1
-	if max == min {
+	if maxVal == minVal {
-		if min == 0 {
+		if minVal == 0 {
 			return newErrorFormulaArg(formulaErrorVALUE, "invalid reference")
 		}
 		return newNumberFormulaArg(float64(1))

col.go

@@ -354,20 +354,20 @@ func (f *File) GetColOutlineLevel(sheet, col string) (uint8, error) {
 }
 
 // parseColRange parse and convert column range with column name to the column number.
-func (f *File) parseColRange(columns string) (min, max int, err error) {
+func (f *File) parseColRange(columns string) (minVal, maxVal int, err error) {
 	colsTab := strings.Split(columns, ":")
-	min, err = ColumnNameToNumber(colsTab[0])
+	minVal, err = ColumnNameToNumber(colsTab[0])
 	if err != nil {
 		return
 	}
-	max = min
+	maxVal = minVal
 	if len(colsTab) == 2 {
-		if max, err = ColumnNameToNumber(colsTab[1]); err != nil {
+		if maxVal, err = ColumnNameToNumber(colsTab[1]); err != nil {
 			return
 		}
 	}
-	if max < min {
+	if maxVal < minVal {
-		min, max = max, min
+		minVal, maxVal = maxVal, minVal
 	}
 	return
 }

date_test.go

@@ -68,22 +68,22 @@ func TestTimeFromExcelTime(t *testing.T) {
 		})
 	}
 	for hour := 0; hour < 24; hour++ {
-		for min := 0; min < 60; min++ {
+		for minVal := 0; minVal < 60; minVal++ {
 			for sec := 0; sec < 60; sec++ {
-				date := time.Date(2021, time.December, 30, hour, min, sec, 0, time.UTC)
+				date := time.Date(2021, time.December, 30, hour, minVal, sec, 0, time.UTC)
 				// Test use 1900 date system
 				excel1900Time, err := timeToExcelTime(date, false)
 				assert.NoError(t, err)
 				date1900Out := timeFromExcelTime(excel1900Time, false)
 				assert.EqualValues(t, hour, date1900Out.Hour())
-				assert.EqualValues(t, min, date1900Out.Minute())
+				assert.EqualValues(t, minVal, date1900Out.Minute())
 				assert.EqualValues(t, sec, date1900Out.Second())
 				// Test use 1904 date system
 				excel1904Time, err := timeToExcelTime(date, true)
 				assert.NoError(t, err)
 				date1904Out := timeFromExcelTime(excel1904Time, true)
 				assert.EqualValues(t, hour, date1904Out.Hour())
-				assert.EqualValues(t, min, date1904Out.Minute())
+				assert.EqualValues(t, minVal, date1904Out.Minute())
 				assert.EqualValues(t, sec, date1904Out.Second())
 			}
 		}

drawing.go

@@ -980,21 +980,21 @@ func (f *File) drawChartSeriesDLbls(i int, opts *Chart) *cDLbls {
 
 // drawPlotAreaCatAx provides a function to draw the c:catAx element.
 func (f *File) drawPlotAreaCatAx(opts *Chart) []*cAxs {
-	max := &attrValFloat{Val: opts.XAxis.Maximum}
+	maxVal := &attrValFloat{Val: opts.XAxis.Maximum}
-	min := &attrValFloat{Val: opts.XAxis.Minimum}
+	minVal := &attrValFloat{Val: opts.XAxis.Minimum}
 	if opts.XAxis.Maximum == nil {
-		max = nil
+		maxVal = nil
 	}
 	if opts.XAxis.Minimum == nil {
-		min = nil
+		minVal = nil
 	}
 	axs := []*cAxs{
 		{
 			AxID: &attrValInt{Val: intPtr(100000000)},
 			Scaling: &cScaling{
 				Orientation: &attrValString{Val: stringPtr(orientation[opts.XAxis.ReverseOrder])},
-				Max:         max,
+				Max:         maxVal,
-				Min:         min,
+				Min:         minVal,
 			},
 			Delete:        &attrValBool{Val: boolPtr(opts.XAxis.None)},
 			AxPos:         &attrValString{Val: stringPtr(catAxPos[opts.XAxis.ReverseOrder])},
@@ -1030,8 +1030,8 @@ func (f *File) drawPlotAreaCatAx(opts *Chart) []*cAxs {
 			AxID: &attrValInt{Val: intPtr(opts.XAxis.axID)},
 			Scaling: &cScaling{
 				Orientation: &attrValString{Val: stringPtr(orientation[opts.XAxis.ReverseOrder])},
-				Max:         max,
+				Max:         maxVal,
-				Min:         min,
+				Min:         minVal,
 			},
 			Delete:        &attrValBool{Val: boolPtr(true)},
 			AxPos:         &attrValString{Val: stringPtr("b")},
@@ -1052,13 +1052,13 @@ func (f *File) drawPlotAreaCatAx(opts *Chart) []*cAxs {
 
 // drawPlotAreaValAx provides a function to draw the c:valAx element.
 func (f *File) drawPlotAreaValAx(opts *Chart) []*cAxs {
-	max := &attrValFloat{Val: opts.YAxis.Maximum}
+	maxVal := &attrValFloat{Val: opts.YAxis.Maximum}
-	min := &attrValFloat{Val: opts.YAxis.Minimum}
+	minVal := &attrValFloat{Val: opts.YAxis.Minimum}
 	if opts.YAxis.Maximum == nil {
-		max = nil
+		maxVal = nil
 	}
 	if opts.YAxis.Minimum == nil {
-		min = nil
+		minVal = nil
 	}
 	var logBase *attrValFloat
 	if opts.YAxis.LogBase >= 2 && opts.YAxis.LogBase <= 1000 {
@@ -1070,8 +1070,8 @@ func (f *File) drawPlotAreaValAx(opts *Chart) []*cAxs {
 			Scaling: &cScaling{
 				LogBase:     logBase,
 				Orientation: &attrValString{Val: stringPtr(orientation[opts.YAxis.ReverseOrder])},
-				Max:         max,
+				Max:         maxVal,
-				Min:         min,
+				Min:         minVal,
 			},
 			Delete: &attrValBool{Val: boolPtr(opts.YAxis.None)},
 			AxPos:  &attrValString{Val: stringPtr(valAxPos[opts.YAxis.ReverseOrder])},
@@ -1109,8 +1109,8 @@ func (f *File) drawPlotAreaValAx(opts *Chart) []*cAxs {
 			AxID: &attrValInt{Val: intPtr(opts.YAxis.axID)},
 			Scaling: &cScaling{
 				Orientation: &attrValString{Val: stringPtr(orientation[opts.YAxis.ReverseOrder])},
-				Max:         max,
+				Max:         maxVal,
-				Min:         min,
+				Min:         minVal,
 			},
 			Delete:        &attrValBool{Val: boolPtr(false)},
 			AxPos:         &attrValString{Val: stringPtr("r")},
@@ -1129,21 +1129,21 @@ func (f *File) drawPlotAreaValAx(opts *Chart) []*cAxs {
 
 // drawPlotAreaSerAx provides a function to draw the c:serAx element.
 func (f *File) drawPlotAreaSerAx(opts *Chart) []*cAxs {
-	max := &attrValFloat{Val: opts.YAxis.Maximum}
+	maxVal := &attrValFloat{Val: opts.YAxis.Maximum}
-	min := &attrValFloat{Val: opts.YAxis.Minimum}
+	minVal := &attrValFloat{Val: opts.YAxis.Minimum}
 	if opts.YAxis.Maximum == nil {
-		max = nil
+		maxVal = nil
 	}
 	if opts.YAxis.Minimum == nil {
-		min = nil
+		minVal = nil
 	}
 	return []*cAxs{
 		{
 			AxID: &attrValInt{Val: intPtr(100000005)},
 			Scaling: &cScaling{
 				Orientation: &attrValString{Val: stringPtr(orientation[opts.YAxis.ReverseOrder])},
-				Max:         max,
+				Max:         maxVal,
-				Min:         min,
+				Min:         minVal,
 			},
 			Delete:     &attrValBool{Val: boolPtr(opts.YAxis.None)},
 			AxPos:      &attrValString{Val: stringPtr(catAxPos[opts.XAxis.ReverseOrder])},

excelize.go

@@ -334,9 +334,9 @@ func (ws *xlsxWorksheet) checkSheet() {
 // with r="0" attribute.
 func (ws *xlsxWorksheet) checkSheetRows() (int, []xlsxRow) {
 	var (
-		row, max  int
+		row, maxVal int
-		r0        []xlsxRow
+		r0          []xlsxRow
-		maxRowNum = func(num int, c []xlsxC) int {
+		maxRowNum   = func(num int, c []xlsxC) int {
 			for _, cell := range c {
 				if _, n, err := CellNameToCoordinates(cell.R); err == nil && n > num {
 					num = n
@@ -351,8 +351,8 @@ func (ws *xlsxWorksheet) checkSheetRows() (int, []xlsxRow) {
 			continue
 		}
 		if i == 0 && *r.R == 0 {
-			if num := maxRowNum(row, r.C); num > max {
+			if num := maxRowNum(row, r.C); num > maxVal {
-				max = num
+				maxVal = num
 			}
 			r0 = append(r0, r)
 			continue
@@ -361,8 +361,8 @@ func (ws *xlsxWorksheet) checkSheetRows() (int, []xlsxRow) {
 			row = *r.R
 		}
 	}
-	if max > row {
+	if maxVal > row {
-		row = max
+		row = maxVal
 	}
 	return row, r0
 }

go.mod

@@ -8,9 +8,9 @@ require (
 	github.com/stretchr/testify v1.8.4
 	github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53
 	github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05
-	golang.org/x/crypto v0.18.0
+	golang.org/x/crypto v0.19.0
 	golang.org/x/image v0.14.0
-	golang.org/x/net v0.20.0
+	golang.org/x/net v0.21.0
 	golang.org/x/text v0.14.0
 )
 

go.sum

@@ -15,12 +15,12 @@ github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53 h1:Chd9DkqERQQuHpXjR/HSV1
 github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53/go.mod h1:ybY/Jr0T0GTCnYjKqmdwxyxn2BQf2RcQIIvex5QldPI=
 github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05 h1:qhbILQo1K3mphbwKh1vNm4oGezE1eF9fQWmNiIpSfI4=
 github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05/go.mod h1:WwHg+CVyzlv/TX9xqBFXEZAuxOPxn2k1GNHwG41IIUQ=
-golang.org/x/crypto v0.18.0 h1:PGVlW0xEltQnzFZ55hkuX5+KLyrMYhHld1YHO4AKcdc=
+golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
-golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/image v0.14.0 h1:tNgSxAFe3jC4uYqvZdTr84SZoM1KfwdC9SKIFrLjFn4=
 golang.org/x/image v0.14.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
-golang.org/x/net v0.20.0 h1:aCL9BSgETF1k+blQaYUBx9hJ9LOGP3gAVemcZlf1Kpo=
+golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
-golang.org/x/net v0.20.0/go.mod h1:z8BVo6PvndSri0LbOE3hAn0apkU+1YvI6E70E9jsnvY=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=

hsl.go

@@ -65,21 +65,21 @@ func RGBToHSL(r, g, b uint8) (h, s, l float64) {
 	fR := float64(r) / 255
 	fG := float64(g) / 255
 	fB := float64(b) / 255
-	max := math.Max(math.Max(fR, fG), fB)
+	maxVal := math.Max(math.Max(fR, fG), fB)
-	min := math.Min(math.Min(fR, fG), fB)
+	minVal := math.Min(math.Min(fR, fG), fB)
-	l = (max + min) / 2
+	l = (maxVal + minVal) / 2
-	if max == min {
+	if maxVal == minVal {
 		// Achromatic.
 		h, s = 0, 0
 	} else {
 		// Chromatic.
-		d := max - min
+		d := maxVal - minVal
 		if l > 0.5 {
-			s = d / (2.0 - max - min)
+			s = d / (2.0 - maxVal - minVal)
 		} else {
-			s = d / (max + min)
+			s = d / (maxVal + minVal)
 		}
-		switch max {
+		switch maxVal {
 		case fR:
 			h = (fG - fB) / d
 			if fG < fB {

numfmt.go

@@ -5776,7 +5776,7 @@ func localMonthsNameKiche(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesKiche[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesKicheAbbr[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesKicheAbbr[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameKinyarwanda returns the Kinyarwanda name of the month.
@@ -5787,7 +5787,7 @@ func localMonthsNameKinyarwanda(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesKinyarwanda[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesKinyarwanda[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesKinyarwanda[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameKiswahili returns the Kiswahili name of the month.
@@ -5798,7 +5798,7 @@ func localMonthsNameKiswahili(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesKiswahili[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesKiswahili[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesKiswahili[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameKonkani returns the Konkani name of the month.
@@ -5809,7 +5809,7 @@ func localMonthsNameKonkani(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesKonkani[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesKonkani[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesKonkani[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameKorean returns the Korean name of the month.
@@ -5828,7 +5828,7 @@ func localMonthsNameKyrgyz(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesKyrgyz[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesKyrgyz[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesKyrgyz[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameLao returns the Lao name of the month.
@@ -5839,7 +5839,7 @@ func localMonthsNameLao(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesLao[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesLao[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesLao[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameLatin returns the Latin name of the month.
@@ -5850,7 +5850,7 @@ func localMonthsNameLatin(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesLatin[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesLatin[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesLatin[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameLatvian returns the Latvian name of the month.
@@ -5861,7 +5861,7 @@ func localMonthsNameLatvian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesLatvian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesLatvian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesLatvian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameLithuanian returns the Lithuanian name of the month.
@@ -5872,7 +5872,7 @@ func localMonthsNameLithuanian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesLithuanian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesLithuanian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesLithuanian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameLowerSorbian returns the LowerSorbian name of the month.
@@ -5883,7 +5883,7 @@ func localMonthsNameLowerSorbian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesLowerSorbian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesLowerSorbian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesLowerSorbian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameLuxembourgish returns the Luxembourgish name of the month.
@@ -5894,7 +5894,7 @@ func localMonthsNameLuxembourgish(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesLuxembourgish[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesLuxembourgish[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesLuxembourgish[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMacedonian returns the Macedonian name of the month.
@@ -5905,7 +5905,7 @@ func localMonthsNameMacedonian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMacedonian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMacedonian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMacedonian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMalay returns the Malay name of the month.
@@ -5916,7 +5916,7 @@ func localMonthsNameMalay(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMalay[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMalay[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMalay[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMalayalam returns the Malayalam name of the month.
@@ -5927,7 +5927,7 @@ func localMonthsNameMalayalam(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMalayalam[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMalayalam[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMalayalam[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMaltese returns the Maltese name of the month.
@@ -5938,7 +5938,7 @@ func localMonthsNameMaltese(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMaltese[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMaltese[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMaltese[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMaori returns the Maori name of the month.
@@ -5949,13 +5949,13 @@ func localMonthsNameMaori(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMaori[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMaori[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMaori[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMapudungun returns the Mapudungun name of the month.
 func localMonthsNameMapudungun(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesMapudungun[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesMapudungun[(t.Month() - 1)])[:1])
 	}
 	return monthNamesMapudungun[int(t.Month())-1]
 }
@@ -5968,7 +5968,7 @@ func localMonthsNameMarathi(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMarathi[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMarathi[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMarathi[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMohawk returns the Mohawk name of the month.
@@ -5979,7 +5979,7 @@ func localMonthsNameMohawk(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMohawk[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMohawk[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMohawk[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMongolian returns the Mongolian name of the month.
@@ -5990,7 +5990,7 @@ func localMonthsNameMongolian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesMongolian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesMongolian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesMongolian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameMorocco returns the Morocco name of the month.
@@ -6012,7 +6012,7 @@ func localMonthsNameNepali(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesNepali[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesNepali[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesNepali[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameNepaliIN returns the India Nepali name of the month.
@@ -6023,7 +6023,7 @@ func localMonthsNameNepaliIN(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesNepaliIN[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesNepaliIN[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesNepaliIN[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameNigeria returns the Nigeria name of the month.
@@ -6045,7 +6045,7 @@ func localMonthsNameNorwegian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesNorwegian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesNorwegian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesNorwegian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameOccitan returns the Occitan name of the month.
@@ -6056,13 +6056,13 @@ func localMonthsNameOccitan(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesOccitan[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesOccitan[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesOccitan[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameOdia returns the Odia name of the month.
 func localMonthsNameOdia(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesOdia[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesOdia[(t.Month() - 1)])[:1])
 	}
 	return monthNamesOdia[int(t.Month())-1]
 }
@@ -6075,7 +6075,7 @@ func localMonthsNameOromo(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesOromo[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesOromo[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesOromo[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNamePashto returns the Pashto name of the month.
@@ -6094,7 +6094,7 @@ func localMonthsNamePashto(t time.Time, abbr int) string {
 // localMonthsNamePersian returns the Persian name of the month.
 func localMonthsNamePersian(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesPersian[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesPersian[(t.Month() - 1)])[:1])
 	}
 	return monthNamesPersian[int(t.Month())-1]
 }
@@ -6102,29 +6102,29 @@ func localMonthsNamePersian(t time.Time, abbr int) string {
 // localMonthsNamePolish returns the Polish name of the month.
 func localMonthsNamePolish(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return string([]rune(monthNamesPolish[int(t.Month()-1)])[:3])
+		return string([]rune(monthNamesPolish[(t.Month() - 1)])[:3])
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesPolish[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesPolish[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesPolish[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNamePortuguese returns the Portuguese name of the month.
 func localMonthsNamePortuguese(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return string([]rune(monthNamesPortuguese[int(t.Month()-1)])[:3])
+		return string([]rune(monthNamesPortuguese[(t.Month() - 1)])[:3])
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesPortuguese[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesPortuguese[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesPortuguese[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNamePunjabi returns the Punjabi name of the month.
 func localMonthsNamePunjabi(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesPunjabi[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesPunjabi[(t.Month() - 1)])[:1])
 	}
 	return monthNamesPunjabi[int(t.Month())-1]
 }
@@ -6132,7 +6132,7 @@ func localMonthsNamePunjabi(t time.Time, abbr int) string {
 // localMonthsNamePunjabiArab returns the Punjabi Arab name of the month.
 func localMonthsNamePunjabiArab(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesPunjabiArab[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesPunjabiArab[(t.Month() - 1)])[:1])
 	}
 	return monthNamesPunjabiArab[int(t.Month())-1]
 }
@@ -6140,26 +6140,26 @@ func localMonthsNamePunjabiArab(t time.Time, abbr int) string {
 // localMonthsNameQuechua returns the Quechua name of the month.
 func localMonthsNameQuechua(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return string([]rune(monthNamesQuechua[int(t.Month()-1)])[:3])
+		return string([]rune(monthNamesQuechua[(t.Month() - 1)])[:3])
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesQuechua[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesQuechua[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesQuechua[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameQuechuaEcuador returns the QuechuaEcuador name of the month.
 func localMonthsNameQuechuaEcuador(t time.Time, abbr int) string {
 	if abbr == 3 {
 		if int(t.Month()) == 1 {
-			return string([]rune(monthNamesQuechuaEcuador[int(t.Month()-1)])[:4])
+			return string([]rune(monthNamesQuechuaEcuador[(t.Month() - 1)])[:4])
 		}
-		return string([]rune(monthNamesQuechuaEcuador[int(t.Month()-1)])[:3])
+		return string([]rune(monthNamesQuechuaEcuador[(t.Month() - 1)])[:3])
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesQuechuaEcuador[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesQuechuaEcuador[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesQuechuaEcuador[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameRomanian returns the Romanian name of the month.
@@ -6170,7 +6170,7 @@ func localMonthsNameRomanian(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesRomanian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesRomanian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesRomanian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameRomansh returns the Romansh name of the month.
@@ -6181,7 +6181,7 @@ func localMonthsNameRomansh(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesRomansh[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesRomansh[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesRomansh[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameRussian returns the Russian name of the month.
@@ -6207,7 +6207,7 @@ func localMonthsNameSakha(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSakha[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSakha[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSakha[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSami returns the Sami name of the month.
@@ -6218,7 +6218,7 @@ func localMonthsNameSami(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSami[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSami[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSami[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSamiLule returns the Sami (Lule) name of the month.
@@ -6229,25 +6229,25 @@ func localMonthsNameSamiLule(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSamiLule[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSamiLule[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSamiLule[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSamiNorthern returns the Sami (Northern) name of the month.
 func localMonthsNameSamiNorthern(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSamiNorthernAbbr[int(t.Month()-1)]
+		return monthNamesSamiNorthernAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSamiNorthern[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSamiNorthern[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSamiNorthern[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSamiNorthernFI returns the Sami (Northern) Finland name of the
 // month.
 func localMonthsNameSamiNorthernFI(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSamiNorthernAbbr[int(t.Month()-1)]
+		return monthNamesSamiNorthernAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		if int(t.Month()) == 1 {
@@ -6255,13 +6255,13 @@ func localMonthsNameSamiNorthernFI(t time.Time, abbr int) string {
 		}
 		return monthNamesSamiNorthern[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSamiNorthern[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSamiNorthern[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSamiSkolt returns the Sami (Skolt) name of the month.
 func localMonthsNameSamiSkolt(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesSamiSkolt[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesSamiSkolt[(t.Month() - 1)])[:1])
 	}
 	return monthNamesSamiSkolt[int(t.Month())-1]
 }
@@ -6269,18 +6269,18 @@ func localMonthsNameSamiSkolt(t time.Time, abbr int) string {
 // localMonthsNameSamiSouthern returns the Sami (Southern) name of the month.
 func localMonthsNameSamiSouthern(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSamiSouthernAbbr[int(t.Month()-1)]
+		return monthNamesSamiSouthernAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSamiSouthern[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSamiSouthern[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSamiSouthern[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSanskrit returns the Sanskrit name of the month.
 func localMonthsNameSanskrit(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesSanskrit[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesSanskrit[(t.Month() - 1)])[:1])
 	}
 	return monthNamesSanskrit[int(t.Month())-1]
 }
@@ -6288,85 +6288,85 @@ func localMonthsNameSanskrit(t time.Time, abbr int) string {
 // localMonthsNameScottishGaelic returns the Scottish Gaelic name of the month.
 func localMonthsNameScottishGaelic(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesScottishGaelicAbbr[int(t.Month()-1)]
+		return monthNamesScottishGaelicAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesScottishGaelic[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesScottishGaelic[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesScottishGaelic[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSerbian returns the Serbian (Cyrillic) name of the month.
 func localMonthsNameSerbian(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSerbianAbbr[int(t.Month()-1)]
+		return monthNamesSerbianAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSerbian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSerbian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSerbian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSerbianBA returns the Serbian (Cyrillic) Bosnia and
 // Herzegovina name of the month.
 func localMonthsNameSerbianBA(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSerbianBAAbbr[int(t.Month()-1)]
+		return monthNamesSerbianBAAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSerbianBA[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSerbianBA[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSerbianBA[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSerbianLatin returns the Serbian (Latin) name of the month.
 func localMonthsNameSerbianLatin(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return string([]rune(monthNamesSerbianLatin[int(t.Month()-1)])[:3])
+		return string([]rune(monthNamesSerbianLatin[(t.Month() - 1)])[:3])
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSerbianLatin[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSerbianLatin[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSerbianLatin[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSerbianLatinCS returns the Serbian (Latin) name of the month.
 func localMonthsNameSerbianLatinCS(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSerbianLatinAbbr[int(t.Month()-1)]
+		return monthNamesSerbianLatinAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSerbianLatin[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSerbianLatin[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSerbianLatin[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSesothoSaLeboa returns the Sesotho sa Leboa name of the month.
 func localMonthsNameSesothoSaLeboa(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSesothoSaLeboaAbbr[int(t.Month()-1)]
+		return monthNamesSesothoSaLeboaAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSesothoSaLeboa[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSesothoSaLeboa[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSesothoSaLeboa[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSetswana returns the Setswana name of the month.
 func localMonthsNameSetswana(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSetswanaAbbr[int(t.Month()-1)]
+		return monthNamesSetswanaAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSetswana[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSetswana[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSetswana[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSindhi returns the Sindhi name of the month.
 func localMonthsNameSindhi(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesSindhi[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesSindhi[(t.Month() - 1)])[:1])
 	}
 	return monthNamesSindhi[int(t.Month())-1]
 }
@@ -6374,12 +6374,12 @@ func localMonthsNameSindhi(t time.Time, abbr int) string {
 // localMonthsNameSinhala returns the Sinhala name of the month.
 func localMonthsNameSinhala(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSinhalaAbbr[int(t.Month()-1)]
+		return monthNamesSinhalaAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSinhala[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSinhala[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSinhala[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSlovak returns the Slovak name of the month.
@@ -6390,40 +6390,40 @@ func localMonthsNameSlovak(t time.Time, abbr int) string {
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSlovak[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSlovak[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSlovak[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSlovenian returns the Slovenian name of the month.
 func localMonthsNameSlovenian(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSlovenianAbbr[int(t.Month()-1)]
+		return monthNamesSlovenianAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSlovenian[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSlovenian[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSlovenian[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSomali returns the Somali name of the month.
 func localMonthsNameSomali(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSomaliAbbr[int(t.Month()-1)]
+		return monthNamesSomaliAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSomali[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSomali[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSomali[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSotho returns the Sotho name of the month.
 func localMonthsNameSotho(t time.Time, abbr int) string {
 	if abbr == 3 {
-		return monthNamesSothoAbbr[int(t.Month()-1)]
+		return monthNamesSothoAbbr[(t.Month() - 1)]
 	}
 	if abbr == 4 || abbr > 6 {
 		return monthNamesSotho[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSotho[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSotho[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSpanish returns the Spanish name of the month.
@@ -6478,7 +6478,7 @@ func localMonthsNameSyriac(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesSyriac[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesSyriac[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesSyriac[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTajik returns the Tajik name of the month.
@@ -6489,7 +6489,7 @@ func localMonthsNameTajik(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTajik[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTajik[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTajik[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTamazight returns the Tamazight name of the month.
@@ -6500,13 +6500,13 @@ func localMonthsNameTamazight(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTamazight[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTamazight[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTamazight[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTamil returns the Tamil name of the month.
 func localMonthsNameTamil(t time.Time, abbr int) string {
 	if abbr == 5 {
-		return string([]rune(monthNamesTamil[int(t.Month()-1)])[:1])
+		return string([]rune(monthNamesTamil[(t.Month() - 1)])[:1])
 	}
 	return monthNamesTamil[int(t.Month())-1]
 }
@@ -6519,7 +6519,7 @@ func localMonthsNameTamilLK(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTamil[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTamil[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTamil[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTatar returns the Tatar name of the month.
@@ -6530,7 +6530,7 @@ func localMonthsNameTatar(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTatar[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTatar[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTatar[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTelugu returns the Telugu name of the month.
@@ -6541,7 +6541,7 @@ func localMonthsNameTelugu(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTelugu[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTelugu[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTelugu[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameSyllabics returns the Syllabics name of the month.
@@ -6589,7 +6589,7 @@ func localMonthsNameTigrinya(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTigrinya[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTigrinya[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTigrinya[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTsonga returns the Tsonga name of the month.
@@ -6600,7 +6600,7 @@ func localMonthsNameTsonga(t time.Time, abbr int) string {
 	if abbr == 4 {
 		return monthNamesTsonga[int(t.Month())-1]
 	}
-	return string([]rune(monthNamesTsonga[int(t.Month()-1)])[:1])
+	return string([]rune(monthNamesTsonga[(t.Month() - 1)])[:1])
 }
 
 // localMonthsNameTraditionalMongolian returns the Traditional Mongolian name of
@@ -6922,10 +6922,10 @@ func (nf *numberFormat) daysHandler(token nfp.Token) {
 	}
 	if strings.Contains(strings.ToUpper(token.TValue), "A") {
 		if l == 3 {
-			nf.result += weekdayNamesAbbr[int(nf.t.Weekday())]
+			nf.result += weekdayNamesAbbr[nf.t.Weekday()]
 		}
 		if l > 3 {
-			nf.result += weekdayNames[int(nf.t.Weekday())]
+			nf.result += weekdayNames[nf.t.Weekday()]
 		}
 		return
 	}
@@ -6936,9 +6936,9 @@ func (nf *numberFormat) daysHandler(token nfp.Token) {
 		case 2:
 			nf.result += fmt.Sprintf("%02d", nf.t.Day())
 		case 3:
-			nf.result += weekdayNamesAbbr[int(nf.t.Weekday())]
+			nf.result += weekdayNamesAbbr[nf.t.Weekday()]
 		default:
-			nf.result += weekdayNames[int(nf.t.Weekday())]
+			nf.result += weekdayNames[nf.t.Weekday()]
 		}
 	}
 }

rows.go

@@ -63,7 +63,7 @@ func (f *File) GetRows(sheet string, opts ...Options) ([][]string, error) {
 		return nil, err
 	}
 	rows, _ := f.Rows(sheet)
-	results, cur, max := make([][]string, 0, 64), 0, 0
+	results, cur, maxVal := make([][]string, 0, 64), 0, 0
 	for rows.Next() {
 		cur++
 		row, err := rows.Columns(opts...)
@@ -72,10 +72,10 @@ func (f *File) GetRows(sheet string, opts ...Options) ([][]string, error) {
 		}
 		results = append(results, row)
 		if len(row) > 0 {
-			max = cur
+			maxVal = cur
 		}
 	}
-	return results[:max], rows.Close()
+	return results[:maxVal], rows.Close()
 }
 
 // Rows defines an iterator to a sheet.

stream.go

@@ -439,24 +439,24 @@ func (sw *StreamWriter) SetRow(cell string, values []interface{}, opts ...RowOpt
 // the width column B:C as 20:
 //
 //	err := sw.SetColWidth(2, 3, 20)
-func (sw *StreamWriter) SetColWidth(min, max int, width float64) error {
+func (sw *StreamWriter) SetColWidth(minVal, maxVal int, width float64) error {
 	if sw.sheetWritten {
 		return ErrStreamSetColWidth
 	}
-	if min < MinColumns || min > MaxColumns || max < MinColumns || max > MaxColumns {
+	if minVal < MinColumns || minVal > MaxColumns || maxVal < MinColumns || maxVal > MaxColumns {
 		return ErrColumnNumber
 	}
 	if width > MaxColumnWidth {
 		return ErrColumnWidth
 	}
-	if min > max {
+	if minVal > maxVal {
-		min, max = max, min
+		minVal, maxVal = maxVal, minVal
 	}
 
 	sw.cols.WriteString(`<col min="`)
-	sw.cols.WriteString(strconv.Itoa(min))
+	sw.cols.WriteString(strconv.Itoa(minVal))
 	sw.cols.WriteString(`" max="`)
-	sw.cols.WriteString(strconv.Itoa(max))
+	sw.cols.WriteString(strconv.Itoa(maxVal))
 	sw.cols.WriteString(`" width="`)
 	sw.cols.WriteString(strconv.FormatFloat(width, 'f', -1, 64))
 	sw.cols.WriteString(`" customWidth="1"/>`)

table.go

@@ -19,7 +19,6 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
-	"unicode"
 	"unicode/utf8"
 )
 
@@ -316,14 +315,22 @@ func checkDefinedName(name string) error {
 	if utf8.RuneCountInString(name) > MaxFieldLength {
 		return ErrNameLength
 	}
+	inCodeRange := func(code int, tbl []int) bool {
+		for i := 0; i < len(tbl); i += 2 {
+			if tbl[i] <= code && code <= tbl[i+1] {
+				return true
+			}
+		}
+		return false
+	}
 	for i, c := range name {
-		if string(c) == "_" {
+		if i == 0 {
-			continue
+			if inCodeRange(int(c), supportedDefinedNameAtStartCharCodeRange) {
+				continue
+			}
+			return newInvalidNameError(name)
 		}
-		if unicode.IsLetter(c) {
+		if inCodeRange(int(c), supportedDefinedNameAfterStartCharCodeRange) {
-			continue
-		}
-		if i > 0 && (unicode.IsDigit(c) || c == '.') {
 			continue
 		}
 		return newInvalidNameError(name)

templates.go

@@ -302,6 +302,163 @@ var IndexedColorMapping = []string{
 	"000000", "FFFFFF",
 }
 
+// supportedDefinedNameAtStartCharCodeRange list the valid first character of a
+// defined name ASCII letters.
+var supportedDefinedNameAtStartCharCodeRange = []int{
+	65, 90, 92, 92, 95, 95, 97, 122, 161, 161, 164, 164,
+	167, 168, 170, 170, 173, 173, 175, 186, 188, 696, 699, 705,
+	711, 711, 713, 715, 717, 717, 720, 721, 728, 731, 733, 733,
+	736, 740, 750, 750, 880, 883, 886, 887, 890, 893, 902, 902,
+	904, 906, 908, 908, 910, 929, 931, 1013, 1015, 1153, 1162, 1315,
+	1329, 1366, 1369, 1369, 1377, 1415, 1488, 1514, 1520, 1522, 1569, 1610,
+	1646, 1647, 1649, 1747, 1749, 1749, 1765, 1766, 1774, 1775, 1786, 1788,
+	1791, 1791, 1808, 1808, 1810, 1839, 1869, 1957, 1969, 1969, 1994, 2026,
+	2036, 2037, 2042, 2042, 2308, 2361, 2365, 2365, 2384, 2384, 2392, 2401,
+	2417, 2418, 2427, 2431, 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480,
+	2482, 2482, 2486, 2489, 2493, 2493, 2510, 2510, 2524, 2525, 2527, 2529,
+	2544, 2545, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, 2610, 2611,
+	2613, 2614, 2616, 2617, 2649, 2652, 2654, 2654, 2674, 2676, 2693, 2701,
+	2703, 2705, 2707, 2728, 2730, 2736, 2738, 2739, 2741, 2745, 2749, 2749,
+	2768, 2768, 2784, 2785, 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864,
+	2866, 2867, 2869, 2873, 2877, 2877, 2908, 2909, 2911, 2913, 2929, 2929,
+	2947, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, 2972, 2972,
+	2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, 3024, 3024, 3077, 3084,
+	3086, 3088, 3090, 3112, 3114, 3123, 3125, 3129, 3133, 3133, 3160, 3161,
+	3168, 3169, 3205, 3212, 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257,
+	3261, 3261, 3294, 3294, 3296, 3297, 3333, 3340, 3342, 3344, 3346, 3368,
+	3370, 3385, 3389, 3389, 3424, 3425, 3450, 3455, 3461, 3478, 3482, 3505,
+	3507, 3515, 3517, 3517, 3520, 3526, 3585, 3642, 3648, 3662, 3713, 3714,
+	3716, 3716, 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743,
+	3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3760, 3762, 3763,
+	3773, 3773, 3776, 3780, 3782, 3782, 3804, 3805, 3840, 3840, 3904, 3911,
+	3913, 3948, 3976, 3979, 4096, 4138, 4159, 4159, 4176, 4181, 4186, 4189,
+	4193, 4193, 4197, 4198, 4206, 4208, 4213, 4225, 4238, 4238, 4256, 4293,
+	4304, 4346, 4348, 4348, 4352, 4441, 4447, 4514, 4520, 4601, 4608, 4680,
+	4682, 4685, 4688, 4694, 4696, 4696, 4698, 4701, 4704, 4744, 4746, 4749,
+	4752, 4784, 4786, 4789, 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822,
+	4824, 4880, 4882, 4885, 4888, 4954, 4992, 5007, 5024, 5108, 5121, 5740,
+	5743, 5750, 5761, 5786, 5792, 5866, 5870, 5872, 5888, 5900, 5902, 5905,
+	5920, 5937, 5952, 5969, 5984, 5996, 5998, 6000, 6016, 6067, 6103, 6103,
+	6108, 6108, 6176, 6263, 6272, 6312, 6314, 6314, 6400, 6428, 6480, 6509,
+	6512, 6516, 6528, 6569, 6593, 6599, 6656, 6678, 6917, 6963, 6981, 6987,
+	7043, 7072, 7086, 7087, 7168, 7203, 7245, 7247, 7258, 7293, 7424, 7615,
+	7680, 7957, 7960, 7965, 7968, 8005, 8008, 8013, 8016, 8023, 8025, 8025,
+	8027, 8027, 8029, 8029, 8031, 8061, 8064, 8116, 8118, 8124, 8126, 8126,
+	8130, 8132, 8134, 8140, 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180,
+	8182, 8188, 8208, 8208, 8211, 8214, 8216, 8216, 8220, 8221, 8224, 8225,
+	8229, 8231, 8240, 8240, 8242, 8243, 8245, 8245, 8251, 8251, 8305, 8305,
+	8308, 8308, 8319, 8319, 8321, 8324, 8336, 8340, 8450, 8451, 8453, 8453,
+	8455, 8455, 8457, 8467, 8469, 8470, 8473, 8477, 8481, 8482, 8484, 8484,
+	8486, 8486, 8488, 8488, 8490, 8493, 8495, 8505, 8508, 8511, 8517, 8521,
+	8526, 8526, 8531, 8532, 8539, 8542, 8544, 8584, 8592, 8601, 8658, 8658,
+	8660, 8660, 8704, 8704, 8706, 8707, 8711, 8712, 8715, 8715, 8719, 8719,
+	8721, 8721, 8725, 8725, 8730, 8730, 8733, 8736, 8739, 8739, 8741, 8741,
+	8743, 8748, 8750, 8750, 8756, 8759, 8764, 8765, 8776, 8776, 8780, 8780,
+	8786, 8786, 8800, 8801, 8804, 8807, 8810, 8811, 8814, 8815, 8834, 8835,
+	8838, 8839, 8853, 8853, 8857, 8857, 8869, 8869, 8895, 8895, 8978, 8978,
+	9312, 9397, 9424, 9449, 9472, 9547, 9552, 9588, 9601, 9615, 9618, 9621,
+	9632, 9633, 9635, 9641, 9650, 9651, 9654, 9655, 9660, 9661, 9664, 9665,
+	9670, 9672, 9675, 9675, 9678, 9681, 9698, 9701, 9711, 9711, 9733, 9734,
+	9737, 9737, 9742, 9743, 9756, 9756, 9758, 9758, 9792, 9792, 9794, 9794,
+	9824, 9825, 9827, 9829, 9831, 9834, 9836, 9837, 9839, 9839, 11264, 11310,
+	11312, 11358, 11360, 11375, 11377, 11389, 11392, 11492, 11520, 11557, 11568, 11621,
+	11631, 11631, 11648, 11670, 11680, 11686, 11688, 11694, 11696, 11702, 11704, 11710,
+	11712, 11718, 11720, 11726, 11728, 11734, 11736, 11742, 12288, 12291, 12293, 12311,
+	12317, 12319, 12321, 12329, 12337, 12341, 12344, 12348, 12353, 12438, 12443, 12447,
+	12449, 12543, 12549, 12589, 12593, 12686, 12704, 12727, 12784, 12828, 12832, 12841,
+	12849, 12850, 12857, 12857, 12896, 12923, 12927, 12927, 12963, 12968, 13059, 13059,
+	13069, 13069, 13076, 13076, 13080, 13080, 13090, 13091, 13094, 13095, 13099, 13099,
+	13110, 13110, 13115, 13115, 13129, 13130, 13133, 13133, 13137, 13137, 13143, 13143,
+	13179, 13182, 13184, 13188, 13192, 13258, 13261, 13267, 13269, 13270, 13272, 13272,
+	13275, 13277, 13312, 19893, 19968, 40899, 40960, 42124, 42240, 42508, 42512, 42527,
+	42538, 42539, 42560, 42591, 42594, 42606, 42624, 42647, 42786, 42887, 42891, 42892,
+	43003, 43009, 43011, 43013, 43015, 43018, 43020, 43042, 43072, 43123, 43138, 43187,
+	43274, 43301, 43312, 43334, 43520, 43560, 43584, 43586, 43588, 43595, 44032, 55203,
+	57344, 63560, 63744, 64045, 64048, 64106, 64112, 64217, 64256, 64262, 64275, 64279,
+	64285, 64285, 64287, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321,
+	64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019,
+	65072, 65073, 65075, 65092, 65097, 65106, 65108, 65111, 65113, 65126, 65128, 65131,
+	65136, 65140, 65142, 65276, 65281, 65374, 65377, 65470, 65474, 65479, 65482, 65487,
+	65490, 65495, 65498, 65500, 65504, 65510,
+}
+
+// supportedDefinedNameAfterStartCharCodeRange list the valid after first
+// character of a defined name ASCII letters.
+var supportedDefinedNameAfterStartCharCodeRange = []int{
+	46, 46, 48, 57, 63, 63, 65, 90, 92, 92, 95, 95,
+	97, 122, 161, 161, 164, 164, 167, 168, 170, 170, 173, 173,
+	175, 186, 188, 887, 890, 893, 900, 902, 904, 906, 908, 908,
+	910, 929, 931, 1315, 1329, 1366, 1369, 1369, 1377, 1415, 1425, 1469,
+	1471, 1471, 1473, 1474, 1476, 1477, 1479, 1479, 1488, 1514, 1520, 1522,
+	1536, 1539, 1542, 1544, 1547, 1547, 1550, 1562, 1567, 1567, 1569, 1630,
+	1632, 1641, 1646, 1747, 1749, 1791, 1807, 1866, 1869, 1969, 1984, 2038,
+	2042, 2042, 2305, 2361, 2364, 2381, 2384, 2388, 2392, 2403, 2406, 2415,
+	2417, 2418, 2427, 2431, 2433, 2435, 2437, 2444, 2447, 2448, 2451, 2472,
+	2474, 2480, 2482, 2482, 2486, 2489, 2492, 2500, 2503, 2504, 2507, 2510,
+	2519, 2519, 2524, 2525, 2527, 2531, 2534, 2554, 2561, 2563, 2565, 2570,
+	2575, 2576, 2579, 2600, 2602, 2608, 2610, 2611, 2613, 2614, 2616, 2617,
+	2620, 2620, 2622, 2626, 2631, 2632, 2635, 2637, 2641, 2641, 2649, 2652,
+	2654, 2654, 2662, 2677, 2689, 2691, 2693, 2701, 2703, 2705, 2707, 2728,
+	2730, 2736, 2738, 2739, 2741, 2745, 2748, 2757, 2759, 2761, 2763, 2765,
+	2768, 2768, 2784, 2787, 2790, 2799, 2801, 2801, 2817, 2819, 2821, 2828,
+	2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, 2869, 2873, 2876, 2884,
+	2887, 2888, 2891, 2893, 2902, 2903, 2908, 2909, 2911, 2915, 2918, 2929,
+	2946, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, 2972, 2972,
+	2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, 3006, 3010, 3014, 3016,
+	3018, 3021, 3024, 3024, 3031, 3031, 3046, 3066, 3073, 3075, 3077, 3084,
+	3086, 3088, 3090, 3112, 3114, 3123, 3125, 3129, 3133, 3140, 3142, 3144,
+	3146, 3149, 3157, 3158, 3160, 3161, 3168, 3171, 3174, 3183, 3192, 3199,
+	3202, 3203, 3205, 3212, 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257,
+	3260, 3268, 3270, 3272, 3274, 3277, 3285, 3286, 3294, 3294, 3296, 3299,
+	3302, 3311, 3313, 3314, 3330, 3331, 3333, 3340, 3342, 3344, 3346, 3368,
+	3370, 3385, 3389, 3396, 3398, 3400, 3402, 3405, 3415, 3415, 3424, 3427,
+	3430, 3445, 3449, 3455, 3458, 3459, 3461, 3478, 3482, 3505, 3507, 3515,
+	3517, 3517, 3520, 3526, 3530, 3530, 3535, 3540, 3542, 3542, 3544, 3551,
+	3570, 3571, 3585, 3642, 3647, 3662, 3664, 3673, 3713, 3714, 3716, 3716,
+	3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, 3745, 3747,
+	3749, 3749, 3751, 3751, 3754, 3755, 3757, 3769, 3771, 3773, 3776, 3780,
+	3782, 3782, 3784, 3789, 3792, 3801, 3804, 3805, 3840, 3843, 3859, 3897,
+	3902, 3911, 3913, 3948, 3953, 3972, 3974, 3979, 3984, 3991, 3993, 4028,
+	4030, 4044, 4046, 4047, 4096, 4169, 4176, 4249, 4254, 4293, 4304, 4346,
+	4348, 4348, 4352, 4441, 4447, 4514, 4520, 4601, 4608, 4680, 4682, 4685,
+	4688, 4694, 4696, 4696, 4698, 4701, 4704, 4744, 4746, 4749, 4752, 4784,
+	4786, 4789, 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822, 4824, 4880,
+	4882, 4885, 4888, 4954, 4959, 4960, 4969, 4988, 4992, 5017, 5024, 5108,
+	5121, 5740, 5743, 5750, 5760, 5786, 5792, 5866, 5870, 5872, 5888, 5900,
+	5902, 5908, 5920, 5940, 5952, 5971, 5984, 5996, 5998, 6000, 6002, 6003,
+	6016, 6099, 6103, 6103, 6107, 6109, 6112, 6121, 6128, 6137, 6155, 6158,
+	6160, 6169, 6176, 6263, 6272, 6314, 6400, 6428, 6432, 6443, 6448, 6459,
+	6464, 6464, 6470, 6509, 6512, 6516, 6528, 6569, 6576, 6601, 6608, 6617,
+	6624, 6683, 6912, 6987, 6992, 7001, 7009, 7036, 7040, 7082, 7086, 7097,
+	7168, 7223, 7232, 7241, 7245, 7293, 7424, 7654, 7678, 7957, 7960, 7965,
+	7968, 8005, 8008, 8013, 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029,
+	8031, 8061, 8064, 8116, 8118, 8132, 8134, 8147, 8150, 8155, 8157, 8175,
+	8178, 8180, 8182, 8190, 8192, 8208, 8211, 8214, 8216, 8216, 8220, 8221,
+	8224, 8225, 8229, 8240, 8242, 8243, 8245, 8245, 8251, 8251, 8260, 8260,
+	8274, 8274, 8287, 8292, 8298, 8305, 8308, 8316, 8319, 8332, 8336, 8340,
+	8352, 8373, 8400, 8432, 8448, 8527, 8531, 8584, 8592, 9000, 9003, 9191,
+	9216, 9254, 9280, 9290, 9312, 9885, 9888, 9916, 9920, 9923, 9985, 9988,
+	9990, 9993, 9996, 10023, 10025, 10059, 10061, 10061, 10063, 10066, 10070, 10070,
+	10072, 10078, 10081, 10087, 10102, 10132, 10136, 10159, 10161, 10174, 10176, 10180,
+	10183, 10186, 10188, 10188, 10192, 10213, 10224, 10626, 10649, 10711, 10716, 10747,
+	10750, 11084, 11088, 11092, 11264, 11310, 11312, 11358, 11360, 11375, 11377, 11389,
+	11392, 11498, 11517, 11517, 11520, 11557, 11568, 11621, 11631, 11631, 11648, 11670,
+	11680, 11686, 11688, 11694, 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726,
+	11728, 11734, 11736, 11742, 11744, 11775, 11823, 11823, 11904, 11929, 11931, 12019,
+	12032, 12245, 12272, 12283, 12288, 12311, 12317, 12335, 12337, 12348, 12350, 12351,
+	12353, 12438, 12441, 12447, 12449, 12543, 12549, 12589, 12593, 12686, 12688, 12727,
+	12736, 12771, 12784, 12830, 12832, 12867, 12880, 13054, 13056, 19893, 19904, 40899,
+	40960, 42124, 42128, 42182, 42240, 42508, 42512, 42539, 42560, 42591, 42594, 42610,
+	42620, 42621, 42623, 42647, 42752, 42892, 43003, 43051, 43072, 43123, 43136, 43204,
+	43216, 43225, 43264, 43310, 43312, 43347, 43520, 43574, 43584, 43597, 43600, 43609,
+	44032, 55203, 55296, 64045, 64048, 64106, 64112, 64217, 64256, 64262, 64275, 64279,
+	64285, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433,
+	64467, 64829, 64848, 64911, 64914, 64967, 65008, 65021, 65024, 65039, 65056, 65062,
+	65072, 65073, 65075, 65092, 65097, 65106, 65108, 65111, 65113, 65126, 65128, 65131,
+	65136, 65140, 65142, 65276, 65279, 65279, 65281, 65374, 65377, 65470, 65474, 65479,
+	65482, 65487, 65490, 65495, 65498, 65500, 65504, 65510, 65512, 65518, 65529, 65533,
+}
+
 // supportedImageTypes defined supported image types.
 var supportedImageTypes = map[string]string{
 	".bmp": ".bmp", ".emf": ".emf", ".emz": ".emz", ".gif": ".gif",
@@ -332,7 +489,7 @@ var supportedDrawingUnderlineTypes = []string{
 var supportedPositioning = []string{"absolute", "oneCell", "twoCell"}
 
 // builtInDefinedNames defined built-in defined names are built with a _xlnm prefix.
-var builtInDefinedNames = []string{"_xlnm.Print_Area", "_xlnm.Print_Titles", "_xlnm._FilterDatabase"}
+var builtInDefinedNames = []string{"_xlnm.Print_Area", "_xlnm.Print_Titles", "_xlnm.Criteria", "_xlnm._FilterDatabase", "_xlnm.Extract", "_xlnm.Consolidate_Area", "_xlnm.Database", "_xlnm.Sheet_Title"}
 
 const templateDocpropsApp = `<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"><TotalTime>0</TotalTime><Application>Go Excelize</Application></Properties>`