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site.go
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site.go
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package meta
import (
"sort"
"strconv"
"strings"
"time"
)
const (
siteStation = iota
siteLocation
siteLatitude
siteLongitude
siteElevation
siteDepth
siteDatum
siteSurvey
siteStart
siteEnd
siteLast
)
var siteHeaders Header = map[string]int{
"Station": siteStation,
"Location": siteLocation,
"Latitude": siteLatitude,
"Longitude": siteLongitude,
"Elevation": siteElevation,
"Depth": siteDepth,
"Datum": siteDatum,
"Survey": siteSurvey,
"Start Date": siteStart,
"End Date": siteEnd,
}
type Site struct {
Position
Span
Station string
Location string
Survey string
}
func (s Site) Less(site Site) bool {
switch {
case s.Station < site.Station:
return true
case s.Station > site.Station:
return false
case s.Location < site.Location:
return true
case s.Location > site.Location:
return false
default:
return false
}
}
type SiteList []Site
func (s SiteList) Len() int { return len(s) }
func (s SiteList) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
func (s SiteList) Less(i, j int) bool { return s[i].Less(s[j]) }
func (s SiteList) encode() [][]string {
var data [][]string
data = append(data, siteHeaders.Columns())
for _, row := range s {
data = append(data, []string{
strings.TrimSpace(row.Station),
strings.TrimSpace(row.Location),
strings.TrimSpace(row.latitude),
strings.TrimSpace(row.longitude),
strings.TrimSpace(row.elevation),
strings.TrimSpace(row.depth),
strings.TrimSpace(row.Datum),
strings.TrimSpace(row.Survey),
row.Start.Format(DateTimeFormat),
row.End.Format(DateTimeFormat),
})
}
return data
}
func (s *SiteList) decode(data [][]string) error {
var sites []Site
if !(len(data) > 1) {
return nil
}
fields := siteHeaders.Fields(data[0])
for _, row := range data[1:] {
d := fields.Remap(row)
lat, err := strconv.ParseFloat(d[siteLatitude], 64)
if err != nil {
return err
}
lon, err := strconv.ParseFloat(d[siteLongitude], 64)
if err != nil {
return err
}
elev, err := ParseFloat64(d[siteElevation])
if err != nil {
return err
}
depth, err := ParseFloat64(d[siteDepth])
if err != nil {
return err
}
start, err := time.Parse(DateTimeFormat, d[siteStart])
if err != nil {
return err
}
end, err := time.Parse(DateTimeFormat, d[siteEnd])
if err != nil {
return err
}
sites = append(sites, Site{
Position: Position{
// geographic details
Latitude: lat,
Longitude: lon,
Elevation: elev,
Depth: depth,
Datum: strings.TrimSpace(d[siteDatum]),
// shadow variables
latitude: d[siteLatitude],
longitude: d[siteLongitude],
elevation: d[siteElevation],
depth: d[siteDepth],
},
Span: Span{
Start: start,
End: end,
},
Station: strings.TrimSpace(d[siteStation]),
Location: strings.TrimSpace(d[siteLocation]),
Survey: strings.TrimSpace(d[siteSurvey]),
})
}
*s = SiteList(sites)
return nil
}
func LoadSites(path string) ([]Site, error) {
var s []Site
if err := LoadList(path, (*SiteList)(&s)); err != nil {
return nil, err
}
sort.Sort(SiteList(s))
return s, nil
}