First setup: Parse CSV content

1 files changed, 70 insertions, 0 deletions

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..29593db
--- /dev/null
+++ b/main.go
@@ -0,0 +1,70 @@
+package main
+
+import (
+	"encoding/csv"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/jszwec/csvutil"
+)
+
+type Participant struct {
+	LastName    string `csv:"lastname"`
+	FirstName   string `csv:"firstname"`
+	DateOfBirth string `csv:"dateofbirth"`
+	Gender      string `csv:"gender"`
+	Nation      string `csv:"nation"`
+	Region      string `csv:"region"`
+	Club        string `csv:"club"`
+}
+
+func parseOphardtInput(fileName string) ([]Participant, error) {
+	f, err := os.Open(fileName)
+	if err != nil {
+		return nil, fmt.Errorf("opening input file '%s': %w", fileName, err)
+	}
+
+	encReader, err := getEncodedReader(f)
+	if err != nil {
+		return nil, fmt.Errorf("cannot determine encoding of file '%s': %w", fileName, err)
+	}
+
+	csvReader := csv.NewReader(encReader)
+	csvReader.Comma = ';'
+
+	dec, err := csvutil.NewDecoder(csvReader)
+	if err != nil {
+		return nil, fmt.Errorf("reading from file '%s': %w", fileName, err)
+	}
+	dec.DisallowMissingColumns = true
+
+	var participants []Participant
+	if err = dec.Decode(&participants); err != nil {
+		return nil, fmt.Errorf("decoding file '%s': %w", fileName, err)
+	}
+
+	return participants, nil
+}
+
+func run() error {
+	if len(os.Args) <= 1 {
+		return errors.New("need filename to start with")
+	}
+	fileName := os.Args[1]
+
+	p, err := parseOphardtInput(fileName)
+	if err != nil {
+		return err
+	}
+
+	fmt.Print(p)
+	return nil
+}
+
+func main() {
+	if err := run(); err != nil {
+		log.Fatalf("An error occured: %v", err)
+	}
+}