// Copyright 2016 - 2020 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 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 1.10 or later.
package excelize
import (
"bytes"
"encoding/json"
"encoding/xml"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path"
"reflect"
"regexp"
"strconv"
"strings"
"unicode/utf8"
"github.com/mohae/deepcopy"
)
// NewSheet provides function to create a new sheet by given worksheet name.
// When creating a new XLSX file, the default sheet will be created. Returns
// the number of sheets in the workbook (file) after appending the new sheet.
func (f *File) NewSheet(name string) int {
// Check if the worksheet already exists
if f.GetSheetIndex(name) != 0 {
return f.SheetCount
}
f.DeleteSheet(name)
f.SheetCount++
wb := f.workbookReader()
sheetID := 0
for _, v := range wb.Sheets.Sheet {
if v.SheetID > sheetID {
sheetID = v.SheetID
}
}
sheetID++
// Update docProps/app.xml
f.setAppXML()
// Update [Content_Types].xml
f.setContentTypes(sheetID)
// Create new sheet /xl/worksheets/sheet%d.xml
f.setSheet(sheetID, name)
// Update xl/_rels/workbook.xml.rels
rID := f.addRels("xl/_rels/workbook.xml.rels", SourceRelationshipWorkSheet, fmt.Sprintf("worksheets/sheet%d.xml", sheetID), "")
// Update xl/workbook.xml
f.setWorkbook(name, sheetID, rID)
return sheetID
}
// contentTypesReader provides a function to get the pointer to the
// [Content_Types].xml structure after deserialization.
func (f *File) contentTypesReader() *xlsxTypes {
var err error
if f.ContentTypes == nil {
f.ContentTypes = new(xlsxTypes)
if err = f.xmlNewDecoder(bytes.NewReader(namespaceStrictToTransitional(f.readXML("[Content_Types].xml")))).
Decode(f.ContentTypes); err != nil && err != io.EOF {
log.Printf("xml decode error: %s", err)
}
}
return f.ContentTypes
}
// contentTypesWriter provides a function to save [Content_Types].xml after
// serialize structure.
func (f *File) contentTypesWriter() {
if f.ContentTypes != nil {
output, _ := xml.Marshal(f.ContentTypes)
f.saveFileList("[Content_Types].xml", output)
}
}
// workbookReader provides a function to get the pointer to the xl/workbook.xml
// structure after deserialization.
func (f *File) workbookReader() *xlsxWorkbook {
var err error
if f.WorkBook == nil {
f.WorkBook = new(xlsxWorkbook)
if err = f.xmlNewDecoder(bytes.NewReader(namespaceStrictToTransitional(f.readXML("xl/workbook.xml")))).
Decode(f.WorkBook); err != nil && err != io.EOF {
log.Printf("xml decode error: %s", err)
}
}
return f.WorkBook
}
// workBookWriter provides a function to save xl/workbook.xml after serialize
// structure.
func (f *File) workBookWriter() {
if f.WorkBook != nil {
output, _ := xml.Marshal(f.WorkBook)
f.saveFileList("xl/workbook.xml", replaceRelationshipsBytes(replaceRelationshipsNameSpaceBytes(output)))
}
}
// workSheetWriter provides a function to save xl/worksheets/sheet%d.xml after
// serialize structure.
func (f *File) workSheetWriter() {
for p, sheet := range f.Sheet {
if sheet != nil {
for k, v := range sheet.SheetData.Row {
f.Sheet[p].SheetData.Row[k].C = trimCell(v.C)
}
output, _ := xml.Marshal(sheet)
f.saveFileList(p, replaceRelationshipsBytes(replaceWorkSheetsRelationshipsNameSpaceBytes(output)))
ok := f.checked[p]
if ok {
delete(f.Sheet, p)
f.checked[p] = false
}
}
}
}
// trimCell provides a function to trim blank cells which created by fillColumns.
func trimCell(column []xlsxC) []xlsxC {
rowFull := true
for i := range column {
rowFull = column[i].hasValue() && rowFull
}
if rowFull {
return column
}
col := make([]xlsxC, len(column))
i := 0
for _, c := range column {
if c.hasValue() {
col[i] = c
i++
}
}
return col[0:i]
}
// setContentTypes provides a function to read and update property of contents
// type of XLSX.
func (f *File) setContentTypes(index int) {
content := f.contentTypesReader()
content.Overrides = append(content.Overrides, xlsxOverride{
PartName: "/xl/worksheets/sheet" + strconv.Itoa(index) + ".xml",
ContentType: "application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml",
})
}
// setSheet provides a function to update sheet property by given index.
func (f *File) setSheet(index int, name string) {
xlsx := xlsxWorksheet{
Dimension: &xlsxDimension{Ref: "A1"},
SheetViews: &xlsxSheetViews{
SheetView: []xlsxSheetView{{WorkbookViewID: 0}},
},
}
path := "xl/worksheets/sheet" + strconv.Itoa(index) + ".xml"
f.sheetMap[trimSheetName(name)] = path
f.Sheet[path] = &xlsx
}
// setWorkbook update workbook property of XLSX. Maximum 31 characters are
// allowed in sheet title.
func (f *File) setWorkbook(name string, sheetID, rid int) {
content := f.workbookReader()
content.Sheets.Sheet = append(content.Sheets.Sheet, xlsxSheet{
Name: trimSheetName(name),
SheetID: sheetID,
ID: "rId" + strconv.Itoa(rid),
})
}
// relsWriter provides a function to save relationships after
// serialize structure.
func (f *File) relsWriter() {
for path, rel := range f.Relationships {
if rel != nil {
output, _ := xml.Marshal(rel)
if strings.HasPrefix(path, "xl/worksheets/sheet/rels/sheet") {
output = replaceWorkSheetsRelationshipsNameSpaceBytes(output)
}
f.saveFileList(path, replaceRelationshipsBytes(output))
}
}
}
// setAppXML update docProps/app.xml file of XML.
func (f *File) setAppXML() {
f.saveFileList("docProps/app.xml", []byte(templateDocpropsApp))
}
// replaceRelationshipsBytes; Some tools that read XLSX files have very strict
// requirements about the structure of the input XML. This function is a
// horrible hack to fix that after the XML marshalling is completed.
func replaceRelationshipsBytes(content []byte) []byte {
oldXmlns := []byte(`xmlns:relationships="http://schemas.openxmlformats.org/officeDocument/2006/relationships" relationships`)
newXmlns := []byte("r")
return bytes.Replace(content, oldXmlns, newXmlns, -1)
}
// replaceRelationshipsNameSpaceBytes; Some tools that read XLSX files have
// very strict requirements about the structure of the input XML. In
// particular both Numbers on the Mac and SAS dislike inline XML namespace
// declarations, or namespace prefixes that don't match the ones that Excel
// itself uses. This is a problem because the Go XML library doesn't multiple
// namespace declarations in a single element of a document. This function is
// a horrible hack to fix that after the XML marshalling is completed.
func replaceRelationshipsNameSpaceBytes(workbookMarshal []byte) []byte {
oldXmlns := []byte(`<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">`)
newXmlns := []byte(`<workbook` + templateNamespaceIDMap)
return bytes.Replace(workbookMarshal, oldXmlns, newXmlns, -1)
}
// SetActiveSheet provides function to set default active worksheet of XLSX by
// given index. Note that active index is different from the index returned by
// function GetSheetMap(). It should be greater than 0 and less than total
// worksheet numbers.
func (f *File) SetActiveSheet(index int) {
if index < 1 {
index = 1
}
wb := f.workbookReader()
for activeTab, sheet := range wb.Sheets.Sheet {
if sheet.SheetID == index {
if wb.BookViews == nil {
wb.BookViews = &xlsxBookViews{}
}
if len(wb.BookViews.WorkBookView) > 0 {
wb.BookViews.WorkBookView[0].ActiveTab = activeTab
} else {
wb.BookViews.WorkBookView = append(wb.BookViews.WorkBookView, xlsxWorkBookView{
ActiveTab: activeTab,
})
}
}
}
for idx, name := range f.GetSheetMap() {
xlsx, _ := f.workSheetReader(name)
if xlsx.SheetViews == nil {
xlsx.SheetViews = &xlsxSheetViews{
SheetView: []xlsxSheetView{{WorkbookViewID: 0}},
}
}
if len(xlsx.SheetViews.SheetView) > 0 {
xlsx.SheetViews.SheetView[0].TabSelected = false
}
if index == idx {
if len(xlsx.SheetViews.SheetView) > 0 {
xlsx.SheetViews.SheetView[0].TabSelected = true
} else {
xlsx.SheetViews.SheetView = append(xlsx.SheetViews.SheetView, xlsxSheetView{
TabSelected: true,
})
}
}
}
}
// GetActiveSheetIndex provides a function to get active sheet index of the
// XLSX. If not found the active sheet will be return integer 0.
func (f *File) GetActiveSheetIndex() int {
wb := f.workbookReader()
if wb != nil {
if wb.BookViews != nil && len(wb.BookViews.WorkBookView) > 0 {
activeTab := wb.BookViews.WorkBookView[0].ActiveTab
if len(wb.Sheets.Sheet) > activeTab && wb.Sheets.Sheet[activeTab].SheetID != 0 {
return wb.Sheets.Sheet[activeTab].SheetID
}
}
if len(wb.Sheets.Sheet) >= 1 {
return wb.Sheets.Sheet[0].SheetID
}
}
return 0
}
// SetSheetName provides a function to set the worksheet name by given old and
// new worksheet names. Maximum 31 characters are allowed in sheet title and
// this function only changes the name of the sheet and will not update the
// sheet name in the formula or reference associated with the cell. So there
// may be problem formula error or reference missing.
func (f *File) SetSheetName(oldName, newName string) {
oldName = trimSheetName(oldName)
newName = trimSheetName(newName)
content := f.workbookReader()
for k, v := range content.Sheets.Sheet {
if v.Name == oldName {
content.Sheets.Sheet[k].Name = newName
f.sheetMap[newName] = f.sheetMap[oldName]
delete(f.sheetMap, oldName)
}
}
}
// GetSheetName provides a function to get worksheet name of XLSX by given
// worksheet index. If given sheet index is invalid, will return an empty
// string.
func (f *File) GetSheetName(index int) string {
wb := f.workbookReader()
if wb == nil || index < 1 {
return ""
}
for _, sheet := range wb.Sheets.Sheet {
if index == sheet.SheetID {
return sheet.Name
}
}
return ""
}
// GetSheetIndex provides a function to get worksheet index of XLSX by given
// sheet name. If given worksheet name is invalid, will return an integer type
// value 0.
func (f *File) GetSheetIndex(name string) int {
wb := f.workbookReader()
if wb != nil {
for _, sheet := range wb.Sheets.Sheet {
if sheet.Name == trimSheetName(name) {
return sheet.SheetID
}
}
}
return 0
}
// GetSheetMap provides a function to get worksheet name and index map of XLSX.
// For example:
//
// f, err := excelize.OpenFile("Book1.xlsx")
// if err != nil {
// return
// }
// for index, name := range f.GetSheetMap() {
// fmt.Println(index, name)
// }
//
func (f *File) GetSheetMap() map[int]string {
wb := f.workbookReader()
sheetMap := map[int]string{}
if wb != nil {
for _, sheet := range wb.Sheets.Sheet {
sheetMap[sheet.SheetID] = sheet.Name
}
}
return sheetMap
}
// getSheetMap provides a function to get worksheet name and XML file path map
// of XLSX.
func (f *File) getSheetMap() map[string]string {
content := f.workbookReader()
rels := f.relsReader("xl/_rels/workbook.xml.rels")
maps := map[string]string{}
for _, v := range content.Sheets.Sheet {
for _, rel := range rels.Relationships {
if rel.ID == v.ID {
// Construct a target XML as xl/worksheets/sheet%d by split path, compatible with different types of relative paths in workbook.xml.rels, for example: worksheets/sheet%d.xml and /xl/worksheets/sheet%d.xml
pathInfo := strings.Split(rel.Target, "/")
pathInfoLen := len(pathInfo)
if pathInfoLen > 0 {
maps[v.Name] = fmt.Sprintf("xl/worksheets/%s", pathInfo[pathInfoLen-1])
}
}
}
}
return maps
}
// SetSheetBackground provides a function to set background picture by given
// worksheet name and file path.
func (f *File) SetSheetBackground(sheet, picture string) error {
var err error
// Check picture exists first.
if _, err = os.Stat(picture); os.IsNotExist(err) {
return err
}
ext, ok := supportImageTypes[path.Ext(picture)]
if !ok {
return errors.New("unsupported image extension")
}
file, _ := ioutil.ReadFile(picture)
name := f.addMedia(file, ext)
sheetRels := "xl/worksheets/_rels/" + strings.TrimPrefix(f.sheetMap[trimSheetName(sheet)], "xl/worksheets/") + ".rels"
rID := f.addRels(sheetRels, SourceRelationshipImage, strings.Replace(name, "xl", "..", 1), "")
f.addSheetPicture(sheet, rID)
f.setContentTypePartImageExtensions()
return err
}
// DeleteSheet provides a function to delete worksheet in a workbook by given
// worksheet name. Use this method with caution, which will affect changes in
// references such as formulas, charts, and so on. If there is any referenced
// value of the deleted worksheet, it will cause a file error when you open it.
// This function will be invalid when only the one worksheet is left.
func (f *File) DeleteSheet(name string) {
if f.SheetCount == 1 || f.GetSheetIndex(name) == 0 {
return
}
sheetName := trimSheetName(name)
wb := f.workbookReader()
wbRels := f.relsReader("xl/_rels/workbook.xml.rels")
for idx, sheet := range wb.Sheets.Sheet {
if sheet.Name == sheetName {
wb.Sheets.Sheet = append(wb.Sheets.Sheet[:idx], wb.Sheets.Sheet[idx+1:]...)
var sheetXML, rels string
if wbRels != nil {
for _, rel := range wbRels.Relationships {
if rel.ID == sheet.ID {
sheetXML = fmt.Sprintf("xl/%s", rel.Target)
rels = strings.Replace(fmt.Sprintf("xl/%s.rels", rel.Target), "xl/worksheets/", "xl/worksheets/_rels/", -1)
}
}
}
target := f.deleteSheetFromWorkbookRels(sheet.ID)
f.deleteSheetFromContentTypes(target)
f.deleteCalcChain(sheet.SheetID, "") // Delete CalcChain
delete(f.sheetMap, sheetName)
delete(f.XLSX, sheetXML)
delete(f.XLSX, rels)
delete(f.Sheet, sheetXML)
f.SheetCount--
}
}
if wb.BookViews != nil {
for idx, bookView := range wb.BookViews.WorkBookView {
if bookView.ActiveTab >= f.SheetCount {
wb.BookViews.WorkBookView[idx].ActiveTab--
}
}
}
f.SetActiveSheet(len(f.GetSheetMap()))
}
// deleteSheetFromWorkbookRels provides a function to remove worksheet
// relationships by given relationships ID in the file
// xl/_rels/workbook.xml.rels.
func (f *File) deleteSheetFromWorkbookRels(rID string) string {
content := f.relsReader("xl/_rels/workbook.xml.rels")
for k, v := range content.Relationships {
if v.ID == rID {
content.Relationships = append(content.Relationships[:k], content.Relationships[k+1:]...)
return v.Target
}
}
return ""
}
// deleteSheetFromContentTypes provides a function to remove worksheet
// relationships by given target name in the file [Content_Types].xml.
func (f *File) deleteSheetFromContentTypes(target string) {
content := f.contentTypesReader()
for k, v := range content.Overrides {
if v.PartName == "/xl/"+target {
content.Overrides = append(content.Overrides[:k], content.Overrides[k+1:]...)
}
}
}
// CopySheet provides a function to duplicate a worksheet by gave source and
// target worksheet index. Note that currently doesn't support duplicate
// workbooks that contain tables, charts or pictures. For Example:
//
// // Sheet1 already exists...
// index := f.NewSheet("Sheet2")
// err := f.CopySheet(1, index)
// return err
//
func (f *File) CopySheet(from, to int) error {
if from < 1 || to < 1 || from == to || f.GetSheetName(from) == "" || f.GetSheetName(to) == "" {
return errors.New("invalid worksheet index")
}
return f.copySheet(from, to)
}
// copySheet provides a function to duplicate a worksheet by gave source and
// target worksheet name.
func (f *File) copySheet(from, to int) error {
sheet, err := f.workSheetReader(f.GetSheetName(from))
if err != nil {
return err
}
worksheet := deepcopy.Copy(sheet).(*xlsxWorksheet)
path := "xl/worksheets/sheet" + strconv.Itoa(to) + ".xml"
if len(worksheet.SheetViews.SheetView) > 0 {
worksheet.SheetViews.SheetView[0].TabSelected = false
}
worksheet.Drawing = nil
worksheet.TableParts = nil
worksheet.PageSetUp = nil
f.Sheet[path] = worksheet
toRels := "xl/worksheets/_rels/sheet" + strconv.Itoa(to) + ".xml.rels"
fromRels := "xl/worksheets/_rels/sheet" + strconv.Itoa(from) + ".xml.rels"
_, ok := f.XLSX[fromRels]
if ok {
f.XLSX[toRels] = f.XLSX[fromRels]
}
return err
}
// SetSheetVisible provides a function to set worksheet visible by given worksheet
// name. A workbook must contain at least one visible worksheet. If the given
// worksheet has been activated, this setting will be invalidated. Sheet state
// values as defined by https://docs.microsoft.com/en-us/dotnet/api/documentformat.openxml.spreadsheet.sheetstatevalues
//
// visible
// hidden
// veryHidden
//
// For example, hide Sheet1:
//
// err := f.SetSheetVisible("Sheet1", false)
//
func (f *File) SetSheetVisible(name string, visible bool) error {
name = trimSheetName(name)
content := f.workbookReader()
if visible {
for k, v := range content.Sheets.Sheet {
if v.Name == name {
content.Sheets.Sheet[k].State = ""
}
}
return nil
}
count := 0
for _, v := range content.Sheets.Sheet {
if v.State != "hidden" {
count++
}
}
for k, v := range content.Sheets.Sheet {
xlsx, err := f.workSheetReader(v.Name)
if err != nil {
return err
}
tabSelected := false
if len(xlsx.SheetViews.SheetView) > 0 {
tabSelected = xlsx.SheetViews.SheetView[0].TabSelected
}
if v.Name == name && count > 1 && !tabSelected {
content.Sheets.Sheet[k].State = "hidden"
}
}
return nil
}
// parseFormatPanesSet provides a function to parse the panes settings.
func parseFormatPanesSet(formatSet string) (*formatPanes, error) {
format := formatPanes{}
err := json.Unmarshal([]byte(formatSet), &format)
return &format, err
}
// SetPanes provides a function to create and remove freeze panes and split panes
// by given worksheet name and panes format set.
//
// activePane defines the pane that is active. The possible values for this
// attribute are defined in the following table:
//
// Enumeration Value | Description
// --------------------------------+-------------------------------------------------------------
// bottomLeft (Bottom Left Pane) | Bottom left pane, when both vertical and horizontal
// | splits are applied.
// |
// | This value is also used when only a horizontal split has
// | been applied, dividing the pane into upper and lower
// | regions. In that case, this value specifies the bottom
// | pane.
// |
// bottomRight (Bottom Right Pane) | Bottom right pane, when both vertical and horizontal
// | splits are applied.
// |
// topLeft (Top Left Pane) | Top left pane, when both vertical and horizontal splits
// | are applied.
// |
// | This value is also used when only a horizontal split has
// | been applied, dividing the pane into upper and lower
// | regions. In that case, this value specifies the top pane.
// |
// | This value is also used when only a vertical split has
// | been applied, dividing the pane into right and left
// | regions. In that case, this value specifies the left pane
// |
// topRight (Top Right Pane) | Top right pane, when both vertical and horizontal
// | splits are applied.
// |
// | This value is also used when only a vertical split has
// | been applied, dividing the pane into right and left
// | regions. In that case, this value specifies the right
// | pane.
//
// Pane state type is restricted to the values supported currently listed in the following table:
//
// Enumeration Value | Description
// --------------------------------+-------------------------------------------------------------
// frozen (Frozen) | Panes are frozen, but were not split being frozen. In
// | this state, when the panes are unfrozen again, a single
// | pane results, with no split.
// |
// | In this state, the split bars are not adjustable.
// |
// split (Split) | Panes are split, but not frozen. In this state, the split
// | bars are adjustable by the user.
//
// x_split (Horizontal Split Position): Horizontal position of the split, in
// 1/20th of a point; 0 (zero) if none. If the pane is frozen, this value
// indicates the number of columns visible in the top pane.
//
// y_split (Vertical Split Position): Vertical position of the split, in 1/20th
// of a point; 0 (zero) if none. If the pane is frozen, this value indicates the
// number of rows visible in the left pane. The possible values for this
// attribute are defined by the W3C XML Schema double datatype.
//
// top_left_cell: Location of the top left visible cell in the bottom right pane
// (when in Left-To-Right mode).
//
// sqref (Sequence of References): Range of the selection. Can be non-contiguous
// set of ranges.
//
// An example of how to freeze column A in the Sheet1 and set the active cell on
// Sheet1!K16:
//
// f.SetPanes("Sheet1", `{"freeze":true,"split":false,"x_split":1,"y_split":0,"top_left_cell":"B1","active_pane":"topRight","panes":[{"sqref":"K16","active_cell":"K16","pane":"topRight"}]}`)
//
// An example of how to freeze rows 1 to 9 in the Sheet1 and set the active cell
// ranges on Sheet1!A11:XFD11:
//
// f.SetPanes("Sheet1", `{"freeze":true,"split":false,"x_split":0,"y_split":9,"top_left_cell":"A34","active_pane":"bottomLeft","panes":[{"sqref":"A11:XFD11","active_cell":"A11","pane":"bottomLeft"}]}`)
//
// An example of how to create split panes in the Sheet1 and set the active cell
// on Sheet1!J60:
//
// f.SetPanes("Sheet1", `{"freeze":false,"split":true,"x_split":3270,"y_split":1800,"top_left_cell":"N57","active_pane":"bottomLeft","panes":[{"sqref":"I36","active_cell":"I36"},{"sqref":"G33","active_cell":"G33","pane":"topRight"},{"sqref":"J60","active_cell":"J60","pane":"bottomLeft"},{"sqref":"O60","active_cell":"O60","pane":"bottomRight"}]}`)
//
// An example of how to unfreeze and remove all panes on Sheet1:
//
// f.SetPanes("Sheet1", `{"freeze":false,"split":false}`)
//
func (f *File) SetPanes(sheet, panes string) error {
fs, _ := parseFormatPanesSet(panes)
xlsx, err := f.workSheetReader(sheet)
if err != nil {
return err
}
p := &xlsxPane{
ActivePane: fs.ActivePane,
TopLeftCell: fs.TopLeftCell,
XSplit: float64(fs.XSplit),
YSplit: float64(fs.YSplit),
}
if fs.Freeze {
p.State = "frozen"
}
xlsx.SheetViews.SheetView[len(xlsx.SheetViews.SheetView)-1].Pane = p
if !(fs.Freeze) && !(fs.Split) {
if len(xlsx.SheetViews.SheetView) > 0 {
xlsx.SheetViews.SheetView[len(xlsx.SheetViews.SheetView)-1].Pane = nil
}
}
s := []*xlsxSelection{}
for _, p := range fs.Panes {
s = append(s, &xlsxSelection{
ActiveCell: p.ActiveCell,
Pane: p.Pane,
SQRef: p.SQRef,
})
}
xlsx.SheetViews.SheetView[len(xlsx.SheetViews.SheetView)-1].Selection = s
return err
}
// GetSheetVisible provides a function to get worksheet visible by given worksheet
// name. For example, get visible state of Sheet1:
//
// f.GetSheetVisible("Sheet1")
//
func (f *File) GetSheetVisible(name string) bool {
content := f.workbookReader()
visible := false
for k, v := range content.Sheets.Sheet {
if v.Name == trimSheetName(name) {
if content.Sheets.Sheet[k].State == "" || content.Sheets.Sheet[k].State == "visible" {
visible = true
}
}
}
return visible
}
// SearchSheet provides a function to get coordinates by given worksheet name,
// cell value, and regular expression. The function doesn't support searching
// on the calculated result, formatted numbers and conditional lookup
// currently. If it is a merged cell, it will return the coordinates of the
// upper left corner of the merged area.
//
// An example of search the coordinates of the value of "100" on Sheet1:
//
// result, err := f.SearchSheet("Sheet1", "100")
//
// An example of search the coordinates where the numerical value in the range
// of "0-9" of Sheet1 is described:
//
// result, err := f.SearchSheet("Sheet1", "[0-9]", true)
//
func (f *File) SearchSheet(sheet, value string, reg ...bool) ([]string, error) {
var (
regSearch bool
result []string
)
for _, r := range reg {
regSearch = r
}
name, ok := f.sheetMap[trimSheetName(sheet)]
if !ok {
return result, ErrSheetNotExist{sheet}
}
if f.Sheet[name] != nil {
// flush data
output, _ := xml.Marshal(f.Sheet[name])
f.saveFileList(name, replaceWorkSheetsRelationshipsNameSpaceBytes(output))
}
return f.searchSheet(name, value, regSearch)
}
// searchSheet provides a function to get coordinates by given worksheet name,
// cell value, and regular expression.
func (f *File) searchSheet(name, value string, regSearch bool) (result []string, err error) {
var (
cellName, inElement string
cellCol, row int
d *xlsxSST
)
d = f.sharedStringsReader()
decoder := f.xmlNewDecoder(bytes.NewReader(f.readXML(name)))
for {
var token xml.Token
token, err = decoder.Token()
if err != nil || token == nil {
if err == io.EOF {
err = nil
}
break
}
switch startElement := token.(type) {
case xml.StartElement:
inElement = startElement.Name.Local
if inElement == "row" {
row, err = attrValToInt("r", startElement.Attr)
if err != nil {
return
}
}
if inElement == "c" {
colCell := xlsxC{}
_ = decoder.DecodeElement(&colCell, &startElement)
val, _ := colCell.getValueFrom(f, d)
if regSearch {
regex := regexp.MustCompile(value)
if !regex.MatchString(val) {
continue
}
} else {
if val != value {
continue
}
}
cellCol, _, err = CellNameToCoordinates(colCell.R)
if err != nil {
return result, err
}
cellName, err = CoordinatesToCellName(cellCol, row)
if err != nil {
return result, err
}
result = append(result, cellName)
}
default:
}
}
return
}
// attrValToInt provides a function to convert the local names to an integer
// by given XML attributes and specified names.
func attrValToInt(name string, attrs []xml.Attr) (val int, err error) {
for _, attr := range attrs {
if attr.Name.Local == name {
val, err = strconv.Atoi(attr.Value)
if err != nil {
return
}
}
}
return
}
// SetHeaderFooter provides a function to set headers and footers by given
// worksheet name and the control characters.
//
// Headers and footers are specified using the following settings fields:
//
// Fields | Description
// ------------------+-----------------------------------------------------------
// AlignWithMargins | Align header footer margins with page margins
// DifferentFirst | Different first-page header and footer indicator
// DifferentOddEven | Different odd and even page headers and footers indicator
// ScaleWithDoc | Scale header and footer with document scaling
// OddFooter | Odd Page Footer
// OddHeader | Odd Header
// EvenFooter | Even Page Footer
// EvenHeader | Even Page Header
// FirstFooter | First Page Footer
// FirstHeader | First Page Header
//
// The following formatting codes can be used in 6 string type fields:
// OddHeader, OddFooter, EvenHeader, EvenFooter, FirstFooter, FirstHeader
//
// Formatting Code | Description
// ------------------------+-------------------------------------------------------------------------
// && | The character "&"
// |
// &font-size | Size of the text font, where font-size is a decimal font size in points
// |
// &"font name,font type" | A text font-name string, font name, and a text font-type string,
// | font type
// |
// &"-,Regular" | Regular text format. Toggles bold and italic modes to off
// |
// &A | Current worksheet's tab name
// |
// &B or &"-,Bold" | Bold text format, from off to on, or vice versa. The default mode is off
// |
// &D | Current date
// |
// &C | Center section
// |
// &E | Double-underline text format
// |
// &F | Current workbook's file name
// |
// &G | Drawing object as background
// |
// &H | Shadow text format
// |
// &I or &"-,Italic" | Italic text format
// |
// &K | Text font color
// |
// | An RGB Color is specified as RRGGBB
// |
// | A Theme Color is specified as TTSNNN where TT is the theme color Id,
// | S is either "+" or "-" of the tint/shade value, and NNN is the
// | tint/shade value
// |
// &L | Left section
// |
// &N | Total number of pages
// |
// &O | Outline text format
// |
// &P[[+|-]n] | Without the optional suffix, the current page number in decimal
// |
// &R | Right section
// |
// &S | Strikethrough text format
// |
// &T | Current time
// |
// &U | Single-underline text format. If double-underline mode is on, the next
// | occurrence in a section specifier toggles double-underline mode to off;
// | otherwise, it toggles single-underline mode, from off to on, or vice
// | versa. The default mode is off
// |
// &X | Superscript text format
// |
// &Y | Subscript text format
// |
// &Z | Current workbook's file path
//
// For example:
//
// err := f.SetHeaderFooter("Sheet1", &excelize.FormatHeaderFooter{
// DifferentFirst: true,
// DifferentOddEven: true,
// OddHeader: "&R&P",
// OddFooter: "&C&F",
// EvenHeader: "&L&P",
// EvenFooter: "&L&D&R&T",
// FirstHeader: `&CCenter &"-,Bold"Bold&"-,Regular"HeaderU+000A&D`,
// })
//
// This example shows:
//
// - The first page has its own header and footer
//
// - Odd and even-numbered pages have different headers and footers
//
// - Current page number in the right section of odd-page headers
//
// - Current workbook's file name in the center section of odd-page footers
//
// - Current page number in the left section of even-page headers
//
// - Current date in the left section and the current time in the right section
// of even-page footers
//
// - The text "Center Bold Header" on the first line of the center section of
// the first page, and the date on the second line of the center section of
// that same page
//
// - No footer on the first page
//
func (f *File) SetHeaderFooter(sheet string, settings *FormatHeaderFooter) error {
xlsx, err := f.workSheetReader(sheet)
if err != nil {
return err
}
if settings == nil {
xlsx.HeaderFooter = nil
return err
}
v := reflect.ValueOf(*settings)
// Check 6 string type fields: OddHeader, OddFooter, EvenHeader, EvenFooter,
// FirstFooter, FirstHeader
for i := 4; i < v.NumField()-1; i++ {
if v.Field(i).Len() >= 255 {
return fmt.Errorf("field %s must be less than 255 characters", v.Type().Field(i).Name)
}
}
xlsx.HeaderFooter = &xlsxHeaderFooter{
AlignWithMargins: settings.AlignWithMargins,
DifferentFirst: settings.DifferentFirst,
DifferentOddEven: settings.DifferentOddEven,
ScaleWithDoc: settings.ScaleWithDoc,
OddHeader: settings.OddHeader,
OddFooter: settings.OddFooter,
EvenHeader: settings.EvenHeader,
EvenFooter: settings.EvenFooter,
FirstFooter: settings.FirstFooter,
FirstHeader: settings.FirstHeader,
}
return err
}
// ProtectSheet provides a function to prevent other users from accidentally
// or deliberately changing, moving, or deleting data in a worksheet. For
// example, protect Sheet1 with protection settings:
//
// err := f.ProtectSheet("Sheet1", &excelize.FormatSheetProtection{
// Password: "password",
// EditScenarios: false,
// })
//
func (f *File) ProtectSheet(sheet string, settings *FormatSheetProtection) error {
xlsx, err := f.workSheetReader(sheet)
if err != nil {
return err
}
if settings == nil {
settings = &FormatSheetProtection{
EditObjects: true,
EditScenarios: true,
SelectLockedCells: true,
}
}
xlsx.SheetProtection = &xlsxSheetProtection{
AutoFilter: settings.AutoFilter,
DeleteColumns: settings.DeleteColumns,
DeleteRows: settings.DeleteRows,
FormatCells: settings.FormatCells,
FormatColumns: settings.FormatColumns,
FormatRows: settings.FormatRows,
InsertColumns: settings.InsertColumns,
InsertHyperlinks: settings.InsertHyperlinks,
InsertRows: settings.InsertRows,
Objects: settings.EditObjects,
PivotTables: settings.PivotTables,
Scenarios: settings.EditScenarios,
SelectLockedCells: settings.SelectLockedCells,
SelectUnlockedCells: settings.SelectUnlockedCells,
Sheet: true,
Sort: settings.Sort,
}
if settings.Password != "" {
xlsx.SheetProtection.Password = genSheetPasswd(settings.Password)
}
return err
}
// UnprotectSheet provides a function to unprotect an Excel worksheet.
func (f *File) UnprotectSheet(sheet string) error {
xlsx, err := f.workSheetReader(sheet)
if err != nil {
return err
}
xlsx.SheetProtection = nil
return err
}
// trimSheetName provides a function to trim invaild characters by given worksheet
// name.
func trimSheetName(name string) string {
if strings.ContainsAny(name, ":\\/?*[]") || utf8.RuneCountInString(name) > 31 {
r := make([]rune, 0, 31)
for _, v := range name {
switch v {
case 58, 92, 47, 63, 42, 91, 93: // replace :\/?*[]
continue
default:
r = append(r, v)
}
if len(r) == 31 {
break
}
}
name = string(r)
}
return name
}
// PageLayoutOption is an option of a page layout of a worksheet. See
// SetPageLayout().
type PageLayoutOption interface {
setPageLayout(layout *xlsxPageSetUp)
}
// PageLayoutOptionPtr is a writable PageLayoutOption. See GetPageLayout().
type PageLayoutOptionPtr interface {
PageLayoutOption
getPageLayout(layout *xlsxPageSetUp)
}
type (
// PageLayoutOrientation defines the orientation of page layout for a
// worksheet.
PageLayoutOrientation string
// PageLayoutPaperSize defines the paper size of the worksheet
PageLayoutPaperSize int
// FitToHeight specified number of vertical pages to fit on
FitToHeight int
// FitToWidth specified number of horizontal pages to fit on
FitToWidth int
)
const (
// OrientationPortrait indicates page layout orientation id portrait.
OrientationPortrait = "portrait"
// OrientationLandscape indicates page layout orientation id landscape.
OrientationLandscape = "landscape"
)
// setPageLayout provides a method to set the orientation for the worksheet.
func (o PageLayoutOrientation) setPageLayout(ps *xlsxPageSetUp) {
ps.Orientation = string(o)
}
// getPageLayout provides a method to get the orientation for the worksheet.
func (o *PageLayoutOrientation) getPageLayout(ps *xlsxPageSetUp) {
// Excel default: portrait
if ps == nil || ps.Orientation == "" {
*o = OrientationPortrait
return
}
*o = PageLayoutOrientation(ps.Orientation)
}
// setPageLayout provides a method to set the paper size for the worksheet.
func (p PageLayoutPaperSize) setPageLayout(ps *xlsxPageSetUp) {
ps.PaperSize = int(p)
}
// getPageLayout provides a method to get the paper size for the worksheet.
func (p *PageLayoutPaperSize) getPageLayout(ps *xlsxPageSetUp) {
// Excel default: 1
if ps == nil || ps.PaperSize == 0 {
*p = 1
return
}
*p = PageLayoutPaperSize(ps.PaperSize)
}
// setPageLayout provides a method to set the fit to height for the worksheet.
func (p FitToHeight) setPageLayout(ps *xlsxPageSetUp) {
if int(p) > 0 {
ps.FitToHeight = int(p)
}
}
// getPageLayout provides a method to get the fit to height for the worksheet.
func (p *FitToHeight) getPageLayout(ps *xlsxPageSetUp) {
if ps == nil || ps.FitToHeight == 0 {
*p = 1
return
}
*p = FitToHeight(ps.FitToHeight)
}
// setPageLayout provides a method to set the fit to width for the worksheet.
func (p FitToWidth) setPageLayout(ps *xlsxPageSetUp) {
if int(p) > 0 {
ps.FitToWidth = int(p)
}
}
// getPageLayout provides a method to get the fit to width for the worksheet.
func (p *FitToWidth) getPageLayout(ps *xlsxPageSetUp) {
if ps == nil || ps.FitToWidth == 0 {
*p = 1
return
}
*p = FitToWidth(ps.FitToWidth)
}
// SetPageLayout provides a function to sets worksheet page layout.
//
// Available options:
// PageLayoutOrientation(string)
// PageLayoutPaperSize(int)
//
// The following shows the paper size sorted by excelize index number:
//
// Index | Paper Size
// -------+-----------------------------------------------
// 1 | Letter paper (8.5 in. by 11 in.)
// 2 | Letter small paper (8.5 in. by 11 in.)
// 3 | Tabloid paper (11 in. by 17 in.)
// 4 | Ledger paper (17 in. by 11 in.)
// 5 | Legal paper (8.5 in. by 14 in.)
// 6 | Statement paper (5.5 in. by 8.5 in.)
// 7 | Executive paper (7.25 in. by 10.5 in.)
// 8 | A3 paper (297 mm by 420 mm)
// 9 | A4 paper (210 mm by 297 mm)
// 10 | A4 small paper (210 mm by 297 mm)
// 11 | A5 paper (148 mm by 210 mm)
// 12 | B4 paper (250 mm by 353 mm)
// 13 | B5 paper (176 mm by 250 mm)
// 14 | Folio paper (8.5 in. by 13 in.)
// 15 | Quarto paper (215 mm by 275 mm)
// 16 | Standard paper (10 in. by 14 in.)
// 17 | Standard paper (11 in. by 17 in.)
// 18 | Note paper (8.5 in. by 11 in.)
// 19 | #9 envelope (3.875 in. by 8.875 in.)
// 20 | #10 envelope (4.125 in. by 9.5 in.)
// 21 | #11 envelope (4.5 in. by 10.375 in.)
// 22 | #12 envelope (4.75 in. by 11 in.)
// 23 | #14 envelope (5 in. by 11.5 in.)
// 24 | C paper (17 in. by 22 in.)
// 25 | D paper (22 in. by 34 in.)
// 26 | E paper (34 in. by 44 in.)
// 27 | DL envelope (110 mm by 220 mm)
// 28 | C5 envelope (162 mm by 229 mm)
// 29 | C3 envelope (324 mm by 458 mm)
// 30 | C4 envelope (229 mm by 324 mm)
// 31 | C6 envelope (114 mm by 162 mm)
// 32 | C65 envelope (114 mm by 229 mm)
// 33 | B4 envelope (250 mm by 353 mm)
// 34 | B5 envelope (176 mm by 250 mm)
// 35 | B6 envelope (176 mm by 125 mm)
// 36 | Italy envelope (110 mm by 230 mm)
// 37 | Monarch envelope (3.875 in. by 7.5 in.).
// 38 | 6 3/4 envelope (3.625 in. by 6.5 in.)
// 39 | US standard fanfold (14.875 in. by 11 in.)
// 40 | German standard fanfold (8.5 in. by 12 in.)
// 41 | German legal fanfold (8.5 in. by 13 in.)
// 42 | ISO B4 (250 mm by 353 mm)
// 43 | Japanese postcard (100 mm by 148 mm)
// 44 | Standard paper (9 in. by 11 in.)
// 45 | Standard paper (10 in. by 11 in.)
// 46 | Standard paper (15 in. by 11 in.)
// 47 | Invite envelope (220 mm by 220 mm)
// 50 | Letter extra paper (9.275 in. by 12 in.)
// 51 | Legal extra paper (9.275 in. by 15 in.)
// 52 | Tabloid extra paper (11.69 in. by 18 in.)
// 53 | A4 extra paper (236 mm by 322 mm)
// 54 | Letter transverse paper (8.275 in. by 11 in.)
// 55 | A4 transverse paper (210 mm by 297 mm)
// 56 | Letter extra transverse paper (9.275 in. by 12 in.)
// 57 | SuperA/SuperA/A4 paper (227 mm by 356 mm)
// 58 | SuperB/SuperB/A3 paper (305 mm by 487 mm)
// 59 | Letter plus paper (8.5 in. by 12.69 in.)
// 60 | A4 plus paper (210 mm by 330 mm)
// 61 | A5 transverse paper (148 mm by 210 mm)
// 62 | JIS B5 transverse paper (182 mm by 257 mm)
// 63 | A3 extra paper (322 mm by 445 mm)
// 64 | A5 extra paper (174 mm by 235 mm)
// 65 | ISO B5 extra paper (201 mm by 276 mm)
// 66 | A2 paper (420 mm by 594 mm)
// 67 | A3 transverse paper (297 mm by 420 mm)
// 68 | A3 extra transverse paper (322 mm by 445 mm)
// 69 | Japanese Double Postcard (200 mm x 148 mm)
// 70 | A6 (105 mm x 148 mm)
// 71 | Japanese Envelope Kaku #2
// 72 | Japanese Envelope Kaku #3
// 73 | Japanese Envelope Chou #3
// 74 | Japanese Envelope Chou #4
// 75 | Letter Rotated (11in x 8 1/2 11 in)
// 76 | A3 Rotated (420 mm x 297 mm)
// 77 | A4 Rotated (297 mm x 210 mm)
// 78 | A5 Rotated (210 mm x 148 mm)
// 79 | B4 (JIS) Rotated (364 mm x 257 mm)
// 80 | B5 (JIS) Rotated (257 mm x 182 mm)
// 81 | Japanese Postcard Rotated (148 mm x 100 mm)
// 82 | Double Japanese Postcard Rotated (148 mm x 200 mm)
// 83 | A6 Rotated (148 mm x 105 mm)
// 84 | Japanese Envelope Kaku #2 Rotated
// 85 | Japanese Envelope Kaku #3 Rotated
// 86 | Japanese Envelope Chou #3 Rotated
// 87 | Japanese Envelope Chou #4 Rotated
// 88 | B6 (JIS) (128 mm x 182 mm)
// 89 | B6 (JIS) Rotated (182 mm x 128 mm)
// 90 | (12 in x 11 in)
// 91 | Japanese Envelope You #4
// 92 | Japanese Envelope You #4 Rotated
// 93 | PRC 16K (146 mm x 215 mm)
// 94 | PRC 32K (97 mm x 151 mm)
// 95 | PRC 32K(Big) (97 mm x 151 mm)
// 96 | PRC Envelope #1 (102 mm x 165 mm)
// 97 | PRC Envelope #2 (102 mm x 176 mm)
// 98 | PRC Envelope #3 (125 mm x 176 mm)
// 99 | PRC Envelope #4 (110 mm x 208 mm)
// 100 | PRC Envelope #5 (110 mm x 220 mm)
// 101 | PRC Envelope #6 (120 mm x 230 mm)
// 102 | PRC Envelope #7 (160 mm x 230 mm)
// 103 | PRC Envelope #8 (120 mm x 309 mm)
// 104 | PRC Envelope #9 (229 mm x 324 mm)
// 105 | PRC Envelope #10 (324 mm x 458 mm)
// 106 | PRC 16K Rotated
// 107 | PRC 32K Rotated
// 108 | PRC 32K(Big) Rotated
// 109 | PRC Envelope #1 Rotated (165 mm x 102 mm)
// 110 | PRC Envelope #2 Rotated (176 mm x 102 mm)
// 111 | PRC Envelope #3 Rotated (176 mm x 125 mm)
// 112 | PRC Envelope #4 Rotated (208 mm x 110 mm)
// 113 | PRC Envelope #5 Rotated (220 mm x 110 mm)
// 114 | PRC Envelope #6 Rotated (230 mm x 120 mm)
// 115 | PRC Envelope #7 Rotated (230 mm x 160 mm)
// 116 | PRC Envelope #8 Rotated (309 mm x 120 mm)
// 117 | PRC Envelope #9 Rotated (324 mm x 229 mm)
// 118 | PRC Envelope #10 Rotated (458 mm x 324 mm)
//
func (f *File) SetPageLayout(sheet string, opts ...PageLayoutOption) error {
s, err := f.workSheetReader(sheet)
if err != nil {
return err
}
ps := s.PageSetUp
if ps == nil {
ps = new(xlsxPageSetUp)
s.PageSetUp = ps
}
for _, opt := range opts {
opt.setPageLayout(ps)
}
return err
}
// GetPageLayout provides a function to gets worksheet page layout.
//
// Available options:
// PageLayoutOrientation(string)
// PageLayoutPaperSize(int)
// FitToHeight(int)
// FitToWidth(int)
func (f *File) GetPageLayout(sheet string, opts ...PageLayoutOptionPtr) error {
s, err := f.workSheetReader(sheet)
if err != nil {
return err
}
ps := s.PageSetUp
for _, opt := range opts {
opt.getPageLayout(ps)
}
return err
}
// SetDefinedName provides a function to set the defined names of the workbook
// or worksheet. If not specified scope, the default scope is workbook.
// For example:
//
// f.SetDefinedName(&excelize.DefinedName{
// Name: "Amount",
// RefersTo: "Sheet1!$A$2:$D$5",
// Comment: "defined name comment",
// Scope: "Sheet2",
// })
//
func (f *File) SetDefinedName(definedName *DefinedName) error {
wb := f.workbookReader()
d := xlsxDefinedName{
Name: definedName.Name,
Comment: definedName.Comment,
Data: definedName.RefersTo,
}
if definedName.Scope != "" {
if sheetID := f.GetSheetIndex(definedName.Scope); sheetID != 0 {
sheetID--
d.LocalSheetID = &sheetID
}
}
if wb.DefinedNames != nil {
for _, dn := range wb.DefinedNames.DefinedName {
var scope string
if dn.LocalSheetID != nil {
scope = f.GetSheetName(*dn.LocalSheetID + 1)
}
if scope == definedName.Scope && dn.Name == definedName.Name {
return errors.New("the same name already exists on the scope")
}
}
wb.DefinedNames.DefinedName = append(wb.DefinedNames.DefinedName, d)
return nil
}
wb.DefinedNames = &xlsxDefinedNames{
DefinedName: []xlsxDefinedName{d},
}
return nil
}
// DeleteDefinedName provides a function to delete the defined names of the
// workbook or worksheet. If not specified scope, the default scope is
// workbook. For example:
//
// f.DeleteDefinedName(&excelize.DefinedName{
// Name: "Amount",
// Scope: "Sheet2",
// })
//
func (f *File) DeleteDefinedName(definedName *DefinedName) error {
wb := f.workbookReader()
if wb.DefinedNames != nil {
for idx, dn := range wb.DefinedNames.DefinedName {
var scope string
if dn.LocalSheetID != nil {
scope = f.GetSheetName(*dn.LocalSheetID + 1)
}
if scope == definedName.Scope && dn.Name == definedName.Name {
wb.DefinedNames.DefinedName = append(wb.DefinedNames.DefinedName[:idx], wb.DefinedNames.DefinedName[idx+1:]...)
return nil
}
}
}
return errors.New("no defined name on the scope")
}
// GetDefinedName provides a function to get the defined names of the workbook
// or worksheet.
func (f *File) GetDefinedName() []DefinedName {
var definedNames []DefinedName
wb := f.workbookReader()
if wb.DefinedNames != nil {
for _, dn := range wb.DefinedNames.DefinedName {
definedName := DefinedName{
Name: dn.Name,
Comment: dn.Comment,
RefersTo: dn.Data,
Scope: "Workbook",
}
if dn.LocalSheetID != nil {
definedName.Scope = f.GetSheetName(*dn.LocalSheetID + 1)
}
definedNames = append(definedNames, definedName)
}
}
return definedNames
}
// GroupSheets provides a function to group worksheets by given worksheets
// name. Group worksheets must contain an active worksheet.
func (f *File) GroupSheets(sheets []string) error {
// check an active worksheet in group worksheets
var inActiveSheet bool
activeSheet := f.GetActiveSheetIndex()
sheetMap := f.GetSheetMap()
for idx, sheetName := range sheetMap {
for _, s := range sheets {
if s == sheetName && idx == activeSheet {
inActiveSheet = true
}
}
}
if !inActiveSheet {
return errors.New("group worksheet must contain an active worksheet")
}
// check worksheet exists
ws := []*xlsxWorksheet{}
for _, sheet := range sheets {
xlsx, err := f.workSheetReader(sheet)
if err != nil {
return err
}
ws = append(ws, xlsx)
}
for _, s := range ws {
sheetViews := s.SheetViews.SheetView
if len(sheetViews) > 0 {
for idx := range sheetViews {
s.SheetViews.SheetView[idx].TabSelected = true
}
continue
}
}
return nil
}
// UngroupSheets provides a function to ungroup worksheets.
func (f *File) UngroupSheets() error {
activeSheet := f.GetActiveSheetIndex()
sheetMap := f.GetSheetMap()
for sheetID, sheet := range sheetMap {
if activeSheet == sheetID {
continue
}
xlsx, _ := f.workSheetReader(sheet)
sheetViews := xlsx.SheetViews.SheetView
if len(sheetViews) > 0 {
for idx := range sheetViews {
xlsx.SheetViews.SheetView[idx].TabSelected = false
}
}
}
return nil
}
// relsReader provides a function to get the pointer to the structure
// after deserialization of xl/worksheets/_rels/sheet%d.xml.rels.
func (f *File) relsReader(path string) *xlsxRelationships {
var err error
if f.Relationships[path] == nil {
_, ok := f.XLSX[path]
if ok {
c := xlsxRelationships{}
if err = f.xmlNewDecoder(bytes.NewReader(namespaceStrictToTransitional(f.readXML(path)))).
Decode(&c); err != nil && err != io.EOF {
log.Printf("xml decode error: %s", err)
}
f.Relationships[path] = &c
}
}
return f.Relationships[path]
}
// fillSheetData ensures there are enough rows, and columns in the chosen
// row to accept data. Missing rows are backfilled and given their row number
// Uses the last populated row as a hint for the size of the next row to add
func prepareSheetXML(xlsx *xlsxWorksheet, col int, row int) {
rowCount := len(xlsx.SheetData.Row)
sizeHint := 0
if rowCount > 0 {
sizeHint = len(xlsx.SheetData.Row[rowCount-1].C)
}
if rowCount < row {
// append missing rows
for rowIdx := rowCount; rowIdx < row; rowIdx++ {
xlsx.SheetData.Row = append(xlsx.SheetData.Row, xlsxRow{R: rowIdx + 1, C: make([]xlsxC, 0, sizeHint)})
}
}
rowData := &xlsx.SheetData.Row[row-1]
fillColumns(rowData, col, row)
}
func fillColumns(rowData *xlsxRow, col, row int) {
cellCount := len(rowData.C)
if cellCount < col {
for colIdx := cellCount; colIdx < col; colIdx++ {
cellName, _ := CoordinatesToCellName(colIdx+1, row)
rowData.C = append(rowData.C, xlsxC{R: cellName})
}
}
}
func makeContiguousColumns(xlsx *xlsxWorksheet, fromRow, toRow, colCount int) {
for ; fromRow < toRow; fromRow++ {
rowData := &xlsx.SheetData.Row[fromRow-1]
fillColumns(rowData, colCount, fromRow)
}
}