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adjust.go
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adjust.go
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// Copyright 2016 - 2021 The excelize Authors. All rights reserved. Use of
// this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//
// Package excelize providing a set of functions that allow you to write to
// and read from XLSX / XLSM / XLTM files. Supports reading and writing
// spreadsheet documents generated by Microsoft Exce™ 2007 and later. Supports
// complex components by high compatibility, and provided streaming API for
// generating or reading data from a worksheet with huge amounts of data. This
// library needs Go version 1.10 or later.
package excelize
import (
"errors"
"strings"
)
type adjustDirection bool
const (
columns adjustDirection = false
rows adjustDirection = true
)
// adjustHelper provides a function to adjust rows and columns dimensions,
// hyperlinks, merged cells and auto filter when inserting or deleting rows or
// columns.
//
// sheet: Worksheet name that we're editing
// column: Index number of the column we're inserting/deleting before
// row: Index number of the row we're inserting/deleting before
// offset: Number of rows/column to insert/delete negative values indicate deletion
//
// TODO: adjustPageBreaks, adjustComments, adjustDataValidations, adjustProtectedCells
//
func (f *File) adjustHelper(sheet string, dir adjustDirection, num, offset int) error {
ws, err := f.workSheetReader(sheet)
if err != nil {
return err
}
sheetID := f.getSheetID(sheet)
if dir == rows {
f.adjustRowDimensions(ws, num, offset)
} else {
f.adjustColDimensions(ws, num, offset)
}
f.adjustHyperlinks(ws, sheet, dir, num, offset)
if err = f.adjustMergeCells(ws, dir, num, offset); err != nil {
return err
}
if err = f.adjustAutoFilter(ws, dir, num, offset); err != nil {
return err
}
if err = f.adjustCalcChain(dir, num, offset, sheetID); err != nil {
return err
}
checkSheet(ws)
_ = checkRow(ws)
if ws.MergeCells != nil && len(ws.MergeCells.Cells) == 0 {
ws.MergeCells = nil
}
return nil
}
// adjustColDimensions provides a function to update column dimensions when
// inserting or deleting rows or columns.
func (f *File) adjustColDimensions(ws *xlsxWorksheet, col, offset int) {
for rowIdx := range ws.SheetData.Row {
for colIdx, v := range ws.SheetData.Row[rowIdx].C {
cellCol, cellRow, _ := CellNameToCoordinates(v.R)
if col <= cellCol {
if newCol := cellCol offset; newCol > 0 {
ws.SheetData.Row[rowIdx].C[colIdx].R, _ = CoordinatesToCellName(newCol, cellRow)
}
}
}
}
}
// adjustRowDimensions provides a function to update row dimensions when
// inserting or deleting rows or columns.
func (f *File) adjustRowDimensions(ws *xlsxWorksheet, row, offset int) {
for i := range ws.SheetData.Row {
r := &ws.SheetData.Row[i]
if newRow := r.R offset; r.R >= row && newRow > 0 {
f.ajustSingleRowDimensions(r, newRow)
}
}
}
// ajustSingleRowDimensions provides a function to ajust single row dimensions.
func (f *File) ajustSingleRowDimensions(r *xlsxRow, num int) {
r.R = num
for i, col := range r.C {
colName, _, _ := SplitCellName(col.R)
r.C[i].R, _ = JoinCellName(colName, num)
}
}
// adjustHyperlinks provides a function to update hyperlinks when inserting or
// deleting rows or columns.
func (f *File) adjustHyperlinks(ws *xlsxWorksheet, sheet string, dir adjustDirection, num, offset int) {
// short path
if ws.Hyperlinks == nil || len(ws.Hyperlinks.Hyperlink) == 0 {
return
}
// order is important
if offset < 0 {
for i := len(ws.Hyperlinks.Hyperlink) - 1; i >= 0; i-- {
linkData := ws.Hyperlinks.Hyperlink[i]
colNum, rowNum, _ := CellNameToCoordinates(linkData.Ref)
if (dir == rows && num == rowNum) || (dir == columns && num == colNum) {
f.deleteSheetRelationships(sheet, linkData.RID)
if len(ws.Hyperlinks.Hyperlink) > 1 {
ws.Hyperlinks.Hyperlink = append(ws.Hyperlinks.Hyperlink[:i],
ws.Hyperlinks.Hyperlink[i 1:]...)
} else {
ws.Hyperlinks = nil
}
}
}
}
if ws.Hyperlinks == nil {
return
}
for i := range ws.Hyperlinks.Hyperlink {
link := &ws.Hyperlinks.Hyperlink[i] // get reference
colNum, rowNum, _ := CellNameToCoordinates(link.Ref)
if dir == rows {
if rowNum >= num {
link.Ref, _ = CoordinatesToCellName(colNum, rowNum offset)
}
} else {
if colNum >= num {
link.Ref, _ = CoordinatesToCellName(colNum offset, rowNum)
}
}
}
}
// adjustAutoFilter provides a function to update the auto filter when
// inserting or deleting rows or columns.
func (f *File) adjustAutoFilter(ws *xlsxWorksheet, dir adjustDirection, num, offset int) error {
if ws.AutoFilter == nil {
return nil
}
coordinates, err := f.areaRefToCoordinates(ws.AutoFilter.Ref)
if err != nil {
return err
}
x1, y1, x2, y2 := coordinates[0], coordinates[1], coordinates[2], coordinates[3]
if (dir == rows && y1 == num && offset < 0) || (dir == columns && x1 == num && x2 == num) {
ws.AutoFilter = nil
for rowIdx := range ws.SheetData.Row {
rowData := &ws.SheetData.Row[rowIdx]
if rowData.R > y1 && rowData.R <= y2 {
rowData.Hidden = false
}
}
return nil
}
coordinates = f.adjustAutoFilterHelper(dir, coordinates, num, offset)
x1, y1, x2, y2 = coordinates[0], coordinates[1], coordinates[2], coordinates[3]
if ws.AutoFilter.Ref, err = f.coordinatesToAreaRef([]int{x1, y1, x2, y2}); err != nil {
return err
}
return nil
}
// adjustAutoFilterHelper provides a function for adjusting auto filter to
// compare and calculate cell axis by the given adjust direction, operation
// axis and offset.
func (f *File) adjustAutoFilterHelper(dir adjustDirection, coordinates []int, num, offset int) []int {
if dir == rows {
if coordinates[1] >= num {
coordinates[1] = offset
}
if coordinates[3] >= num {
coordinates[3] = offset
}
} else {
if coordinates[2] >= num {
coordinates[2] = offset
}
}
return coordinates
}
// areaRefToCoordinates provides a function to convert area reference to a
// pair of coordinates.
func (f *File) areaRefToCoordinates(ref string) ([]int, error) {
rng := strings.Split(strings.Replace(ref, "$", "", -1), ":")
return areaRangeToCoordinates(rng[0], rng[1])
}
// areaRangeToCoordinates provides a function to convert cell range to a
// pair of coordinates.
func areaRangeToCoordinates(firstCell, lastCell string) ([]int, error) {
coordinates := make([]int, 4)
var err error
coordinates[0], coordinates[1], err = CellNameToCoordinates(firstCell)
if err != nil {
return coordinates, err
}
coordinates[2], coordinates[3], err = CellNameToCoordinates(lastCell)
return coordinates, err
}
// sortCoordinates provides a function to correct the coordinate area, such
// correct C1:B3 to B1:C3.
func sortCoordinates(coordinates []int) error {
if len(coordinates) != 4 {
return errors.New("coordinates length must be 4")
}
if coordinates[2] < coordinates[0] {
coordinates[2], coordinates[0] = coordinates[0], coordinates[2]
}
if coordinates[3] < coordinates[1] {
coordinates[3], coordinates[1] = coordinates[1], coordinates[3]
}
return nil
}
// coordinatesToAreaRef provides a function to convert a pair of coordinates
// to area reference.
func (f *File) coordinatesToAreaRef(coordinates []int) (string, error) {
if len(coordinates) != 4 {
return "", errors.New("coordinates length must be 4")
}
firstCell, err := CoordinatesToCellName(coordinates[0], coordinates[1])
if err != nil {
return "", err
}
lastCell, err := CoordinatesToCellName(coordinates[2], coordinates[3])
if err != nil {
return "", err
}
return firstCell ":" lastCell, err
}
// adjustMergeCells provides a function to update merged cells when inserting
// or deleting rows or columns.
func (f *File) adjustMergeCells(ws *xlsxWorksheet, dir adjustDirection, num, offset int) error {
if ws.MergeCells == nil {
return nil
}
for i := 0; i < len(ws.MergeCells.Cells); i {
areaData := ws.MergeCells.Cells[i]
coordinates, err := f.areaRefToCoordinates(areaData.Ref)
if err != nil {
return err
}
x1, y1, x2, y2 := coordinates[0], coordinates[1], coordinates[2], coordinates[3]
if dir == rows {
if y1 == num && y2 == num && offset < 0 {
f.deleteMergeCell(ws, i)
i--
}
y1 = f.adjustMergeCellsHelper(y1, num, offset)
y2 = f.adjustMergeCellsHelper(y2, num, offset)
} else {
if x1 == num && x2 == num && offset < 0 {
f.deleteMergeCell(ws, i)
i--
}
x1 = f.adjustMergeCellsHelper(x1, num, offset)
x2 = f.adjustMergeCellsHelper(x2, num, offset)
}
if x1 == x2 && y1 == y2 {
f.deleteMergeCell(ws, i)
i--
}
if areaData.Ref, err = f.coordinatesToAreaRef([]int{x1, y1, x2, y2}); err != nil {
return err
}
}
return nil
}
// adjustMergeCellsHelper provides a function for adjusting merge cells to
// compare and calculate cell axis by the given pivot, operation axis and
// offset.
func (f *File) adjustMergeCellsHelper(pivot, num, offset int) int {
if pivot >= num {
pivot = offset
if pivot < 1 {
return 1
}
return pivot
}
return pivot
}
// deleteMergeCell provides a function to delete merged cell by given index.
func (f *File) deleteMergeCell(ws *xlsxWorksheet, idx int) {
if len(ws.MergeCells.Cells) > idx {
ws.MergeCells.Cells = append(ws.MergeCells.Cells[:idx], ws.MergeCells.Cells[idx 1:]...)
ws.MergeCells.Count = len(ws.MergeCells.Cells)
}
}
// adjustCalcChain provides a function to update the calculation chain when
// inserting or deleting rows or columns.
func (f *File) adjustCalcChain(dir adjustDirection, num, offset, sheetID int) error {
if f.CalcChain == nil {
return nil
}
for index, c := range f.CalcChain.C {
if c.I != sheetID {
continue
}
colNum, rowNum, err := CellNameToCoordinates(c.R)
if err != nil {
return err
}
if dir == rows && num <= rowNum {
if newRow := rowNum offset; newRow > 0 {
f.CalcChain.C[index].R, _ = CoordinatesToCellName(colNum, newRow)
}
}
if dir == columns && num <= colNum {
if newCol := colNum offset; newCol > 0 {
f.CalcChain.C[index].R, _ = CoordinatesToCellName(newCol, rowNum)
}
}
}
return nil
}