adding excel2struct

excel2struct/README.md

@@ -0,0 +1,36 @@
+# excel2struct
+
+Convierte una hoja de excel compatible con la librería [Excelize](https://github.com/qax-os/excelize) a un tipo estructurado de Go. La primera fila debe coincidir con la etiqueta XLSX, sensible a las mayúsculas.
+
+| Id | Nombre | Apellidos | Email                    | Género | Balance |
+|----|--------|-----------|--------------------------|--------|---------|
+| 1  | Caryl  | Kimbrough | ckimbrough0@fotki.com    | true   | 571.08  |
+| 2  | Robin  | Bozward   | rbozward1@thetimes.co.uk | true   | 2162.89 |
+| 3  | Tabbie | Kaygill   | tkaygill2@is.gd          | false  | 703.94  |
+
+```go
+type User struct {
+	Id       int     `xlsx:"Id"`
+	Name     string  `xlsx:"Nombre"`
+	LastName string  `xlsx:"Apellidos"`
+	Email    string  `xlsx:"Email"`
+	Gender   bool    `xlsx:"Género"`
+	Balance  float32 `xlsx:"Balance"`
+}
+```
+
+```go
+func main() {
+ data := exceltostruct.Convert[User]("Book1.xlsx", "Sheet1")
+ fmt.Println(data)
+}
+```
+
+```bash
+[{1 Caryl Kimbrough ckimbrough0@fotki.com true 571.08} {2 Robin Bozward rbozward1@thetimes.co.uk true 2162.89} {3 Tabbie Kaygill tkaygill2@is.gd false 703.94}]
+```
+
+Donde el primer parámetro es la ruta donde está ubicada la hoja de cálculo y la segunda el nombre de la hoja.
+
+Tipos compatibles: **int**, **float32**, **bool** y **string**.
+

excel2struct/exceltostruct.go

@@ -0,0 +1,63 @@
+package exceltostruct
+
+import (
+	"github.com/xuri/excelize/v2"
+	"reflect"
+	"strconv"
+)
+
+func Convert[T any](bookPath, sheetName string) (dataExcel []T) {
+	f, _ := excelize.OpenFile(bookPath)
+	rows, _ := f.GetRows(sheetName)
+
+	firstRow := map[string]int{}
+
+	for i, row := range rows[0] {
+		firstRow[row] = i
+	}
+
+	t := new(T)
+	dataExcel = make([]T, 0, len(rows)-1)
+
+	for _, row := range rows[1:] {
+		v := reflect.ValueOf(t)
+		if v.Kind() == reflect.Pointer {
+			v = v.Elem()
+		}
+
+		for i := 0; i < v.NumField(); i++ {
+			tag := v.Type().Field(i).Tag.Get("xlsx")
+			objType := v.Field(i).Type().String()
+
+			if j, ok := firstRow[tag]; ok {
+				field := v.Field(i)
+				if len(row) > j {
+					d := row[j]
+					elementConverted := convertType(objType, d)
+					field.Set(reflect.ValueOf(elementConverted))
+				}
+			}
+		}
+
+		dataExcel = append(dataExcel, *t)
+	}
+
+	return dataExcel
+}
+
+func convertType(objType string, value string) any {
+	switch objType {
+	case "int":
+		valueInt, _ := strconv.Atoi(value)
+		return valueInt
+	case "bool":
+		valueBool, _ := strconv.ParseBool(value)
+		return valueBool
+	case "float32":
+		valueFloat, _ := strconv.ParseFloat(value, 32)
+		return float32(valueFloat)
+	case "string":
+		return value
+	}
+	return value
+}