Combine functions:

workBookRelsWriter, drawingRelsWriter into relsWriter;
drawingRelsReader, workbookRelsReader, workSheetRelsReader into relsReader;
addDrawingRelationships, addSheetRelationships into addRels

1 files changed, 3 insertions, 6 deletions

diff --git a/file.go b/file.go
index 46f1f62..2e0d27b 100644
--- a/file.go
+++ b/file.go
@@ -42,14 +42,13 @@ func NewFile() *File {
 	f.CalcChain = f.calcChainReader()
 	f.Comments = make(map[string]*xlsxComments)
 	f.ContentTypes = f.contentTypesReader()
-	f.DrawingRels = make(map[string]*xlsxWorkbookRels)
 	f.Drawings = make(map[string]*xlsxWsDr)
 	f.Styles = f.stylesReader()
 	f.DecodeVMLDrawing = make(map[string]*decodeVmlDrawing)
 	f.VMLDrawing = make(map[string]*vmlDrawing)
 	f.WorkBook = f.workbookReader()
-	f.WorkBookRels = f.workbookRelsReader()
-	f.WorkSheetRels = make(map[string]*xlsxWorkbookRels)
+	f.Relationships = make(map[string]*xlsxRelationships)
+	f.Relationships["xl/_rels/workbook.xml.rels"] = f.relsReader("xl/_rels/workbook.xml.rels")
 	f.Sheet["xl/worksheets/sheet1.xml"], _ = f.workSheetReader("Sheet1")
 	f.sheetMap["Sheet1"] = "xl/worksheets/sheet1.xml"
 	f.Theme = f.themeReader()
@@ -97,13 +96,11 @@ func (f *File) WriteToBuffer() (*bytes.Buffer, error) {
 	f.calcChainWriter()
 	f.commentsWriter()
 	f.contentTypesWriter()
-	f.drawingRelsWriter()
 	f.drawingsWriter()
 	f.vmlDrawingWriter()
 	f.workBookWriter()
-	f.workBookRelsWriter()
 	f.workSheetWriter()
-	f.workSheetRelsWriter()
+	f.relsWriter()
 	f.styleSheetWriter()
 
 	for path, content := range f.XLSX {