103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"path"
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"github.com/ray1729/gpx-utils/pkg/openname"
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)
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func main() {
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openNames := flag.String("opname", "", "Path to Ordnance Server Open Names zip archive")
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gpxFile := flag.String("gpx", "", "Path to GPX file")
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dirName := flag.String("dir", "", "Directory to scan for GPX files")
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flag.Parse()
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if *openNames == "" {
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log.Fatal("--opname is required")
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}
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if (*gpxFile == "" && *dirName == "") || (*gpxFile != "" && *dirName != "") {
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log.Fatal("exactly one of --dir or --gpx is required")
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}
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rt, err := openname.BuildIndex(*openNames)
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if err != nil {
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log.Fatal(err)
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}
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gs, err := openname.NewGPXSummarizer(rt)
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if err != nil {
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log.Fatal(err)
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}
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if *gpxFile != "" {
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err = summarizeSingleFile(gs, *gpxFile)
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} else {
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err = summarizeDirectory(gs, *dirName)
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}
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if err != nil {
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log.Fatal(err)
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}
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}
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func summarizeDirectory(gs *openname.GPXSummarizer, dirName string) error {
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files, err := ioutil.ReadDir(dirName)
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if err != nil {
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return err
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}
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for _, f := range files {
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if f.IsDir() || path.Ext(f.Name()) != ".gpx" {
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continue
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}
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filename := path.Join(dirName, f.Name())
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r, err := os.Open(filename)
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if err != nil {
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return fmt.Errorf("error opening %s for reading: %v", filename, err)
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}
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log.Printf("Analyzing %s", filename)
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summary, err := gs.SummarizeTrack(r)
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if err != nil {
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return fmt.Errorf("error creating summary of GPX track %s: %v", filename, err)
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}
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outfile := filename[:len(filename)-4] + ".json"
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wc, err := os.OpenFile(outfile, os.O_CREATE|os.O_TRUNC|os.O_RDWR, 0644)
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if err != nil {
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return fmt.Errorf("error creating output file %s: %v", outfile, err)
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}
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err = writeSummary(summary, wc)
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if err != nil {
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wc.Close()
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return fmt.Errorf("error marshalling JSON to %s: %v", outfile, err)
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}
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if err = wc.Close(); err != nil {
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return fmt.Errorf("error closing file %s: %v", outfile, err)
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}
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}
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return nil
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}
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func summarizeSingleFile(gs *openname.GPXSummarizer, filename string) error {
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r, err := os.Open(filename)
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if err != nil {
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return fmt.Errorf("error opening %s for reading: %v", filename, err)
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}
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summary, err := gs.SummarizeTrack(r)
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if err != nil {
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return fmt.Errorf("error creating summary of GPX track %s: %v", filename, err)
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}
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if err = writeSummary(summary, os.Stdout); err != nil {
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return fmt.Errorf("error marshalling summary for %s: %v", filename, err)
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}
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return nil
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}
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func writeSummary(s *openname.TrackSummary, w io.Writer) error {
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enc := json.NewEncoder(w)
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enc.SetIndent("", " ")
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if err := enc.Encode(s); 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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