Files
challenge/parsing/parsing.go
2024-04-24 21:03:51 +02:00

130 lines
4.3 KiB
Go

package parsing
import (
"errors"
"encoding/csv"
"reflect"
"strconv"
)
type Employee struct {
EmpID uint `csv:"Emp ID"`
NamePrefix string `csv:"Name Prefix"`
FirstName string `csv:"First Name"`
MiddleInitial string `csv:"Middle Initial"`
LastName string `csv:"Last Name"`
Gender Gender `csv:"Gender"`
Email string `csv:"E Mail"`
FathersName string `csv:"Father's Name"`
MothersName string `csv:"Mothers's Name"`
MothersMaidenName string `csv:"Mother's Maiden Name"`
Birthdate string `csv:"Date of Birth"`
BirthTime string `csv:"Time of Birth"`
WeightKg uint16 `csv:"Weight in Kgs."`
JoiningDate string `csv:"Date of Joining"`
JoiningQuarter Quarter `csv:"Quarter of Joining"`
JoiningHalf Half `csv:"Half of Joining"`
JoiningYear uint16 `csv:"Year of Joining"`
JoiningMonth uint8 `csv:"Month of Joining"`
JoiningMonthName Month `csv:"Month Name of Joining"`
JoiningMonthNameShort MonthShort `csv:"Short Month"`
JoiningMonthDay uint8 `csv:"Day of Joining"`
JoiningWeekDay WeekDay `csv:"DOW of Joining"`
JoiningWeekDayShort WeekDayShort `csv:"Short DOW"`
YearsOfService float32 `csv:"Age in Company (Years)"`
Salary uint32 `csv:"Salary"`
LatestHikePercentage string `csv:"Last % Hike"`
SSN string `csv:"SSN"`
PhoneNumber string `csv:"Phone No."`
PlaceName string `csv:"Place Name"`
County string `csv:"County"`
City string `csv:"City"`
State string `csv:"State"`
Zip uint32 `csv:"Zip"`
Region string `csv:"Region"`
Username string `csv:"User Name"`
Password string `csv:"Password"`
// Empty slot
// Empty slot
// Empty slot
}
func UnmarshalEmployees(reader *csv.Reader) ([]Employee, error) {
reader.Comma = ','
headers, err := reader.Read()
if err != nil {
return nil, errors.New("Couldn't read the headers.")
}
e := Employee{}
refet := reflect.TypeOf(e)
tagMap := make(map[string]int)
headersLength := len(headers)
numFields := refet.NumField()
for i := 0; i < numFields && i < headersLength; i++ {
field := refet.Field(i)
if field.Tag.Get("csv") == headers[i] {
tagMap[field.Name] = i
}
}
var employees []Employee
for {
record, err := reader.Read()
if err != nil {
break
}
employee := Employee{}
reflectionValue := reflect.ValueOf(&employee).Elem()
for fieldName, index := range tagMap {
field := reflectionValue.FieldByName(fieldName)
if field.IsValid() {
switch field.Type().Name() {
case "string":
field.SetString(record[index])
case "uint":
if intValue, err := strconv.ParseUint(record[index], 10, 64); err == nil {
field.SetUint(intValue)
}
case "uint8":
if intValue, err := strconv.ParseUint(record[index], 10, 8); err == nil {
field.SetUint(intValue)
}
case "uint16":
if intValue, err := strconv.ParseUint(record[index], 10, 16); err == nil {
field.SetUint(intValue)
}
case "uint32":
if intValue, err := strconv.ParseUint(record[index], 10, 32); err == nil {
field.SetUint(intValue)
}
case "float32":
if floatValue, err := strconv.ParseFloat(record[index], 32); err == nil {
field.SetFloat(floatValue)
}
case "Gender":
field.Set(reflect.ValueOf(Gender(rune(record[index][0]))))
case "Quarter":
field.Set(reflect.ValueOf(Quarter(string(record[index]))))
case "Half":
field.Set(reflect.ValueOf(Half(string(record[index]))))
case "Month":
field.Set(reflect.ValueOf(Month(string(record[index]))))
case "MonthShort":
field.Set(reflect.ValueOf(MonthShort(string(record[index]))))
case "WeekDay":
field.Set(reflect.ValueOf(WeekDay(string(record[index]))))
case "WeekDayShort":
field.Set(reflect.ValueOf(WeekDayShort(string(record[index]))))
}
}
}
employees = append(employees, employee)
}
return employees, nil
}