Fix issue #2 change project to object-oriented style and update readme file.

1 files changed, 44 insertions, 16 deletions

diff --git a/file.go b/file.go
index a25d66d..e3af5ca 100644
--- a/file.go
+++ b/file.go
@@ -9,25 +9,53 @@ import (
 // CreateFile provide function to create new file by default template
 // For example:
 // xlsx := CreateFile()
-func CreateFile() map[string]string {
+func CreateFile() *File {
 	file := make(map[string]string)
-	file = saveFileList(file, `_rels/.rels`, templateRels)
-	file = saveFileList(file, `docProps/app.xml`, templateDocpropsApp)
-	file = saveFileList(file, `docProps/core.xml`, templateDocpropsCore)
-	file = saveFileList(file, `xl/_rels/workbook.xml.rels`, templateWorkbookRels)
-	file = saveFileList(file, `xl/theme/theme1.xml`, templateTheme)
-	file = saveFileList(file, `xl/worksheets/sheet1.xml`, templateSheet)
-	file = saveFileList(file, `xl/styles.xml`, templateStyles)
-	file = saveFileList(file, `xl/workbook.xml`, templateWorkbook)
-	file = saveFileList(file, `[Content_Types].xml`, templateContentTypes)
-	return file
+	file[`_rels/.rels`] = templateRels
+	file[`docProps/app.xml`] = templateDocpropsApp
+	file[`docProps/core.xml`] = templateDocpropsCore
+	file[`xl/_rels/workbook.xml.rels`] = templateWorkbookRels
+	file[`xl/theme/theme1.xml`] = templateTheme
+	file[`xl/worksheets/sheet1.xml`] = templateSheet
+	file[`xl/styles.xml`] = templateStyles
+	file[`xl/workbook.xml`] = templateWorkbook
+	file[`[Content_Types].xml`] = templateContentTypes
+	return &File{
+		XLSX: file,
+	}
+}
+
+// Save provide function override the xlsx file with origin path.
+func (f *File) Save() error {
+	buf := new(bytes.Buffer)
+	w := zip.NewWriter(buf)
+	for path, content := range f.XLSX {
+		f, err := w.Create(path)
+		if err != nil {
+			return err
+		}
+		_, err = f.Write([]byte(content))
+		if err != nil {
+			return err
+		}
+	}
+	err := w.Close()
+	if err != nil {
+		return err
+	}
+	file, err := os.OpenFile(f.Path, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0666)
+	if err != nil {
+		return err
+	}
+	buf.WriteTo(file)
+	return err
 }
 
-// Save after create or update to an xlsx file at the provided path.
-func Save(files map[string]string, name string) error {
+// WriteTo provide function create or update to an xlsx file at the provided path.
+func (f *File) WriteTo(name string) error {
 	buf := new(bytes.Buffer)
 	w := zip.NewWriter(buf)
-	for path, content := range files {
+	for path, content := range f.XLSX {
 		f, err := w.Create(path)
 		if err != nil {
 			return err
@@ -41,10 +69,10 @@ func Save(files map[string]string, name string) error {
 	if err != nil {
 		return err
 	}
-	f, err := os.OpenFile(name, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0666)
+	file, err := os.OpenFile(name, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0666)
 	if err != nil {
 		return err
 	}
-	buf.WriteTo(f)
+	buf.WriteTo(file)
 	return err
 }