Decoder

Overview ¶

Package csv implements a decoder, that supports CSV decoding. The decoding is guided by struct tags, similar to the use of struct tags in JSON or XML decoding.

Given an CSV file with a header row like this:

id        name
007       Seven

We can decode the CSV into an Item with a few lines:

import stdcsv "encoding/csv"

...

type Item struct {
    ID   string `csv:"id"`
    Name string `csv:"name"`
}

...

func main() {
    dec := csv.NewDecoder(stdcsv.NewReader(os.Stdin))
    var item Item
    if err := dec.Decode(&item); err != nil {
        log.Fatal(err)
    }
    fmt.Println(item.ID, item.Name) // 007 Seven
}

Since the decoder takes a csv.Reader as argument, you can customize any CSV related property like comma or number of fields on that reader.

Missing fields are ignored. Only string fields are supported.