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stops.go
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stops.go
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package ggtfs
import (
"encoding/csv"
"errors"
"fmt"
"strconv"
)
type Stop struct {
Id string
Code *string
Name *string
Desc *string
Lat *float64
Lon *float64
ZoneId *string
Url *string
LocationType *int
ParentStation *string
Timezone *string
WheelchairBoarding *int
PlatformCode *string
LevelId *string
MunicipalityId *string
lineNumber int
}
func LoadStops(csvReader *csv.Reader) ([]*Stop, []error) {
stops := make([]*Stop, 0)
errs := make([]error, 0)
headers, err := ReadHeaderRow(csvReader)
if err != nil {
errs = append(errs, createFileError(StopsFileName, fmt.Sprintf("read error: %v", err.Error())))
return stops, errs
}
if headers == nil {
return stops, errs
}
usedIds := make([]string, 0)
index := 0
for {
row, err := ReadDataRow(csvReader)
if err != nil {
errs = append(errs, createFileError(StopsFileName, fmt.Sprintf("%v", err.Error())))
index++
continue
}
if row == nil {
break
}
rowErrs := make([]error, 0)
stop := Stop{
lineNumber: index,
}
var stopId *string
for name, column := range headers {
switch name {
case "stop_id":
stopId = handleIDField(row[column], StopsFileName, name, index, &rowErrs)
case "stop_code":
stop.Code = handleTextField(row[column], StopsFileName, name, index, &rowErrs)
case "stop_name":
stop.Name = handleTextField(row[column], StopsFileName, name, index, &rowErrs)
case "stop_desc":
stop.Desc = handleTextField(row[column], StopsFileName, name, index, &rowErrs)
case "stop_lat":
stop.Lat = handleFloat64Field(row[column], StopsFileName, name, index, &rowErrs)
case "stop_lon":
stop.Lon = handleFloat64Field(row[column], StopsFileName, name, index, &rowErrs)
case "zone_id":
stop.ZoneId = handleIDField(row[column], StopsFileName, name, index, &rowErrs)
case "stop_url":
stop.Url = handleURLField(row[column], StopsFileName, name, index, &rowErrs)
case "location_type":
stop.LocationType = handleLocationTypeField(row[column], StopsFileName, name, index, &rowErrs)
case "parent_station":
stop.ParentStation = handleIDField(row[column], StopsFileName, name, index, &rowErrs)
case "stop_timezone":
stop.Timezone = handleTimeZoneField(row[column], StopsFileName, name, index, &rowErrs)
case "wheelchair_boarding":
stop.WheelchairBoarding = handleWheelchairBoardingField(row[column], StopsFileName, name, index, &rowErrs)
case "level_id":
stop.LevelId = handleIDField(row[column], StopsFileName, name, index, &rowErrs)
case "platform_code":
stop.PlatformCode = handleTextField(row[column], StopsFileName, name, index, &rowErrs)
case "municipality_id":
stop.MunicipalityId = handleIDField(row[column], StopsFileName, name, index, &rowErrs)
}
}
if stopId == nil {
rowErrs = append(rowErrs, createFileRowError(StopsFileName, stop.lineNumber, "stop_id must be specified"))
} else {
stop.Id = *stopId
if StringArrayContainsItem(usedIds, *stopId) {
errs = append(errs, createFileRowError(StopsFileName, index, fmt.Sprintf("%s: stop_id", nonUniqueId)))
} else {
usedIds = append(usedIds, *stopId)
}
}
if stop.Name == nil && stop.LocationType != nil && *stop.LocationType <= 3 {
rowErrs = append(rowErrs, createFileRowError(StopsFileName, stop.lineNumber, "stop_name must be specified for location types 0,1 and 2"))
}
if stop.Lat == nil && stop.LocationType != nil && *stop.LocationType <= 3 {
rowErrs = append(rowErrs, createFileRowError(StopsFileName, stop.lineNumber, "stop_lat must be specified for location types 0,1 and 2"))
}
if stop.Lon == nil && stop.LocationType != nil && *stop.LocationType <= 3 {
rowErrs = append(rowErrs, createFileRowError(StopsFileName, stop.lineNumber, "stop_lon must be specified for location types 0,1 and 2"))
}
if stop.ParentStation == nil && stop.LocationType != nil && *stop.LocationType >= 2 && *stop.LocationType <= 4 {
rowErrs = append(rowErrs, createFileRowError(StopsFileName, stop.lineNumber, "parent_station must be specified for location types 2,3 and 4"))
}
if len(rowErrs) > 0 {
errs = append(errs, rowErrs...)
} else {
stops = append(stops, &stop)
}
index++
}
return stops, errs
}
func handleLocationTypeField(str string, fileName string, fieldName string, index int, errs *[]error) *int {
n, err := strconv.ParseInt(str, 10, 64)
if err != nil {
*errs = append(*errs, createFieldError(fileName, fieldName, index, err))
return nil
}
if lt := int(n); lt <= 4 {
return <
} else {
*errs = append(*errs, createFieldError(fileName, fieldName, index, errors.New(invalidValue)))
return nil
}
}
func handleWheelchairBoardingField(str string, fileName string, fieldName string, index int, errs *[]error) *int {
if str == "" {
vcb := 0
return &vcb
}
n, err := strconv.ParseInt(str, 10, 64)
if err != nil {
*errs = append(*errs, createFieldError(fileName, fieldName, index, err))
return nil
}
if wcb := int(n); wcb <= 4 {
return &wcb
} else {
*errs = append(*errs, createFieldError(fileName, fieldName, index, errors.New(invalidValue)))
return nil
}
}