121 lines
3.2 KiB
Go
121 lines
3.2 KiB
Go
package producer
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import (
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"encoding/xml"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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// 定义与XML结构对应的Go结构体
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type ProductMeta struct {
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XMLName xml.Name `xml:"ProductMeta"`
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Satellite string `xml:"Satellite"`
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Sensor string `xml:"Sensor"`
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ProductID string `xml:"ProductID"`
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ProductLevel string `xml:"ProductLevel"`
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OutputFormat string `xml:"OutputFormat"`
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ProductGenTime string `xml:"ProductGenTime"`
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StartTime string `xml:"StartTime"`
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EndTime string `xml:"EndTime"`
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CentreTime string `xml:"CentreTime"`
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Bands int `xml:"Bands"`
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CentreLocation Location `xml:"CentreLocation"`
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Corners Corners `xml:"Corners"`
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SunAzimuth float64 `xml:"SunAzimuth"`
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SunElevation float64 `xml:"SunElevation"`
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SatAzimuth float64 `xml:"SatAzimuth"`
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SatElevation float64 `xml:"SatElevation"`
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Gsd float64 `xml:"Gsd"`
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CloudRate float64 `xml:"CloudRate"`
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Roll float64 `xml:"Roll"`
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Pitch float64 `xml:"Pitch"`
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Yaw float64 `xml:"Yaw"`
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SatPosX float64 `xml:"SatPosX"`
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SatPosY float64 `xml:"SatPosY"`
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SatPosZ float64 `xml:"SatPosZ"`
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Width int `xml:"Width"`
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Height int `xml:"Height"`
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DataSize int64 `xml:"DataSize"`
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MapProjection string `xml:"MapProjection"`
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EarthEllipsoid string `xml:"EarthEllipsoid"`
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UtmZone int `xml:"UtmZone"`
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GainLevel int `xml:"GainLevel"`
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IntegratedLevel int `xml:"IntegratedLevel"`
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IntegratedTime float64 `xml:"IntegratedTime"`
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}
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type Location struct {
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Longitude float64 `xml:"Longitude"`
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Latitude float64 `xml:"Latitude"`
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}
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type Corners struct {
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UpperLeft Location `xml:"UpperLeft"`
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UpperRight Location `xml:"UpperRight"`
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LowerRight Location `xml:"LowerRight"`
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LowerLeft Location `xml:"LowerLeft"`
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}
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func (r *Registrator) makeProductMeta(scene *Scene) *ProductMeta {
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meta := &ProductMeta{
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Satellite: "SJY01",
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Sensor: "PMS",
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OutputFormat: "GTiff",
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ProductGenTime: time.Now().Format("2006-01-02T15:04:05"),
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Width: scene.Width,
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Height: scene.Height,
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MapProjection: "GEOGRAPHIC",
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EarthEllipsoid: "WGS_84",
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ProductLevel: "L1A",
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}
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switch scene.Type {
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case "PAN":
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meta.Gsd = 1.3
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meta.Bands = 1
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case "MSS":
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meta.Gsd = 5.2
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meta.Bands = 4
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}
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meta.ProductID = filepath.Base(strings.TrimSuffix(scene.Tiff, ".tiff"))
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startTime, centerTime, endTime := r.SceneImageTime(scene)
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meta.StartTime = startTime.Format("2006-01-02T15:04:05.000")
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meta.EndTime = endTime.Format("2006-01-02T15:04:05.000")
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meta.CentreTime = centerTime.Format("2006-01-02T15:04:05.000")
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return meta
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}
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func (r *Registrator) writeProductMeta(productMeta *ProductMeta, filename string) error {
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output, err := xml.MarshalIndent(productMeta, "", " ")
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if err != nil {
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return err
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}
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err = os.WriteFile(filename, output, 0644)
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if err != nil {
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return err
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}
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return nil
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}
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func ParseProductMeta(filename string) (*ProductMeta, error) {
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f, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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var meta ProductMeta
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err = xml.NewDecoder(f).Decode(&meta)
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if err != nil {
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return nil, err
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}
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return &meta, nil
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}
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