Unmarshal CSV record into struct in Go

csv, go, unmarshalling

Solution

There is gocarina/gocsv which handles custom struct in the same way encoding/json does. You can also write custom marshaller and unmarshaller for specific types.

Example:

type Client struct {
    Id      string `csv:"client_id"` // .csv column headers
    Name    string `csv:"client_name"`
    Age     string `csv:"client_age"`
}

func main() {
    in, err := os.Open("clients.csv")
    if err != nil {
        panic(err)
    }
    defer in.Close()

    clients := []*Client{}

    if err := gocsv.UnmarshalFile(in, &clients); err != nil {
        panic(err)
    }
    for _, client := range clients {
        fmt.Println("Hello, ", client.Name)
    }
}

Problem

The problem how to automatically deserialize/unmarshal record from CSV file into Go struct. For example, I have ``` type Test struct { Name string Surname string Age int } ``` And CSV file contains records ``` John;Smith;42 Piter;Abel;50 ``` Is there an easy way to unmarshal those records into struct except by using "encoding/csv" package for reading record and then doing something like ``` record, _ := reader.Read() test := Test{record[0],record[1],atoi(record[2])} ```

Original source