Upstream gocarina/gocsv state of the touched files before c31659ffab

examples/full/main.go

@@ -0,0 +1,132 @@
+package main
+
+import (
+	"encoding/csv"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"time"
+
+	"github.com/gocarina/gocsv"
+)
+
+type NotUsed struct {
+	Name string
+}
+
+type Client struct { // Our example struct, you can use "-" to ignore a field
+	ID            string   `csv:"client_id"`
+	Name          string   `csv:"client_name"`
+	Age           string   `csv:"client_age"`
+	NotUsedString string   `csv:"-"`
+	NotUsedStruct NotUsed  `csv:"-"`
+	Address1      Address  `csv:"addr1"`
+	Address2      Address  //`csv:"addr2"` will use Address2 in header
+	Employed      DateTime `csv:"employed"`
+}
+
+type Address struct {
+	Street string `csv:"street"`
+	City   string `csv:"city"`
+}
+
+var _ gocsv.TypeMarshaller = new(DateTime)
+var _ gocsv.TypeUnmarshaller = new(DateTime)
+
+type DateTime struct {
+	time.Time
+}
+
+// Convert the internal date as CSV string
+func (date *DateTime) MarshalCSV() (string, error) {
+	return date.String(), nil
+}
+
+// You could also use the standard Stringer interface
+func (date DateTime) String() string {
+	return date.Time.Format("20060201")
+}
+
+// Convert the CSV string as internal date
+func (date *DateTime) UnmarshalCSV(csv string) (err error) {
+	date.Time, err = time.Parse("20060201", csv)
+	return err
+}
+
+func main() {
+	// set the pipe as the delimiter for writing
+	gocsv.TagSeparator = "|"
+	// set the pipe as the delimiter for reading
+	gocsv.SetCSVReader(func(in io.Reader) gocsv.CSVReader {
+		r := csv.NewReader(in)
+		r.Comma = '|'
+		return r
+	})
+
+	// Create an empty clients file
+	clientsFile, err := os.OpenFile("clients.csv", os.O_RDWR|os.O_CREATE|os.O_TRUNC, os.ModePerm)
+	if err != nil {
+		panic(err)
+	}
+	defer clientsFile.Close()
+
+	// Create clients
+	clients := []*Client{
+		{ID: "12", Name: "John", Age: "21",
+			Address1: Address{"Street 1", "City1"},
+			Address2: Address{"Street 2", "City2"},
+			Employed: DateTime{time.Date(2022, 11, 04, 12, 0, 0, 0, time.UTC)},
+		},
+		{ID: "13", Name: "Fred",
+			Address1: Address{`Main "Street" 1`, "City1"}, // show quotes in value
+			Address2: Address{"Main Street 2", "City2"},
+			Employed: DateTime{time.Date(2022, 11, 04, 13, 0, 0, 0, time.UTC)},
+		},
+		{ID: "14", Name: "James", Age: "32",
+			Address1: Address{"Center Street 1", "City1"},
+			Address2: Address{"Center Street 2", "City2"},
+			Employed: DateTime{time.Date(2022, 11, 04, 14, 0, 0, 0, time.UTC)},
+		},
+		{ID: "15", Name: "Danny",
+			Address1: Address{"State Street 1", "City1"},
+			Address2: Address{"State Street 2", "City2"},
+			Employed: DateTime{time.Date(2022, 11, 04, 15, 0, 0, 0, time.UTC)},
+		},
+	}
+	// Save clients to csv file
+	if err = gocsv.MarshalFile(&clients, clientsFile); err != nil {
+		panic(err)
+	}
+
+	// Reset the file reader
+	if _, err := clientsFile.Seek(0, io.SeekStart); err != nil {
+		panic(err)
+	}
+	// Read file and print to console
+	b, err := ioutil.ReadAll(clientsFile)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println("clients.csv:")
+	fmt.Println(string(b))
+
+	// Reset the file reader
+	if _, err := clientsFile.Seek(0, io.SeekStart); err != nil {
+		panic(err)
+	}
+	// Load clients from file
+	var newClients []*Client
+	if err := gocsv.UnmarshalFile(clientsFile, &newClients); err != nil {
+		panic(err)
+	}
+	fmt.Println("clients:")
+	for _, c := range newClients {
+		fmt.Printf("%s:%s Adress1:%s, %s Address2:%s, %s Employed: %s\n",
+			c.ID, c.Name,
+			c.Address1.Street, c.Address1.City,
+			c.Address2.Street, c.Address2.City,
+			c.Employed,
+		)
+	}
+}