func processForm(req *http.Request, context map[string]string) {
file, handler, err := req.FormFile("uploadfile")
if err != nil {
context["Error"] = "Sudoku file missing"
log.Println("Could not open sudoku file.", err.Error())
return
}
if len(handler.Header["Content-Type"]) > 0 {
context["ContentType"] = handler.Header["Content-Type"][0]
}
img, _, err := image.Decode(file)
if err != nil {
context["Error"] = "Could not read the file"
log.Println("Could not read the file.", err.Error())
return
}
s, err := sudoku.NewSudoku(img)
if err != nil {
context["Error"] = err.Error()
log.Println(err.Error())
return
}
context["Image"] = imageToBase64(s.Overlay())
}
func findSudoku(filename string, debug bool) (sudoku.Sudoku, error) {
img, err := getExampleImage(filename)
if err != nil {
log.Fatalln(err)
}
return sudoku.NewSudoku(img)
}