/
main.go
99 lines (88 loc) · 1.91 KB
/
main.go
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package main
import (
"encoding/csv"
"fmt"
"io"
"log"
"os"
"strconv"
"strings"
)
type monument struct {
id string
elevation float64
location string
}
type monumentInfo struct {
columns map[string]int
monuments []monument
}
func loadMonuments(rdr io.Reader) (*monumentInfo, error) {
info := new(monumentInfo)
reader := csv.NewReader(rdr)
for i := 0; ; i++ {
record, err := reader.Read()
if err == io.EOF {
break
} else if err != nil {
return nil, err
}
if i == 0 {
info.loadHeader(record)
} else {
err = info.parseRow(record)
if err != nil {
return nil, err
}
}
}
return info, nil
}
func (mi *monumentInfo) loadHeader(row []string) {
mi.columns = make(map[string]int, len(row))
for i, v := range row {
mi.columns[v] = i
}
}
func (mi *monumentInfo) parseRow(row []string) error {
info := mi.columns["Elevation in feet"]
elevation, err := strconv.ParseFloat(row[info], 64)
if err != nil {
return err
}
location := row[mi.columns["Location"]]
id := row[mi.columns["Station ID"]]
mi.monuments = append(mi.monuments, monument{
elevation: elevation,
location: location,
id: id,
})
return nil
}
func main() {
file, err := os.Open("City_of_Champaign_GPS_Control_Points.csv")
if err != nil {
log.Fatalln(err)
}
defer file.Close()
monuments, err := loadMonuments(file)
if err != nil {
log.Fatalln(err)
}
var highest monument
for _, v := range monuments.monuments {
if v.elevation > highest.elevation {
highest = v
}
}
location := highest.location[1 : len(highest.location)-1]
location = strings.Replace(location, " ", "", -1)
fmt.Println(`<!DOCTYPE html>
<html>
<body>
<img src="https://maps.googleapis.com/maps/api/staticmap?zoom=16&maptype=satellite&size=700x700&markers=` + location + `">
<h1>Station ` + string(highest.id) + `</h1>
<h3>` + strconv.FormatFloat(highest.elevation, 'f', 2, 64) + `ft</h3>
</body>
</html>`)
}