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Merge pull request #15 from PDOK/cli-lib
implement cli lib
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package main | ||
|
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| import ( | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
|
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| "github.com/go-spatial/geom/encoding/gpkg" | ||
| "github.com/urfave/cli/v2" | ||
| ) | ||
|
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| const SOURCE string = `source` | ||
| const TARGET string = `target` | ||
| const RESOLUTION string = `resolution` | ||
| const PAGESIZE string = `pagesize` | ||
|
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| func main() { | ||
| app := cli.NewApp() | ||
| app.Name = "GOSieve" | ||
| app.Usage = "A Golang Polygon Sieve application" | ||
|
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| app.Flags = []cli.Flag{ | ||
| &cli.StringFlag{ | ||
| Name: SOURCE, | ||
| Aliases: []string{"s"}, | ||
| Usage: "Source GPKG", | ||
| Required: true, | ||
| EnvVars: []string{"SOURCE_GPKG"}, | ||
| }, | ||
| &cli.StringFlag{ | ||
| Name: TARGET, | ||
| Aliases: []string{"t"}, | ||
| Usage: "Target GPKG", | ||
| Required: true, | ||
| EnvVars: []string{"TARGET_GPKG"}, | ||
| }, | ||
| &cli.Float64Flag{ | ||
| Name: RESOLUTION, | ||
| Aliases: []string{"r"}, | ||
| Usage: "Resolution, the threshold area to determine if a feature is sieved or not", | ||
| Value: 0.0, | ||
| Required: false, | ||
| EnvVars: []string{"SIEVE_RESOLUTION"}, | ||
| }, | ||
| &cli.IntFlag{ | ||
| Name: PAGESIZE, | ||
| Aliases: []string{"p"}, | ||
| Usage: "Page Size, how many features are written per transaction to the target GPKG", | ||
| Value: 1000, | ||
| Required: false, | ||
| EnvVars: []string{"SIEVE_PAGESIZE"}, | ||
| }, | ||
| } | ||
|
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| app.Action = func(c *cli.Context) error { | ||
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| srcHandle, err := gpkg.Open(c.String(SOURCE)) | ||
| if err != nil { | ||
| log.Fatalf("error opening source GeoPackage: %s", err) | ||
| } | ||
| defer srcHandle.Close() | ||
|
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| trgHandle, err := gpkg.Open(c.String(TARGET)) | ||
| if err != nil { | ||
| log.Fatalf("error opening target GeoPackage: %s", err) | ||
| } | ||
| defer trgHandle.Close() | ||
|
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| tables := getSourceTableInfo(srcHandle) | ||
|
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| err = initTargetGeopackage(trgHandle, tables) | ||
| if err != nil { | ||
| log.Fatalf("error initialization the target GeoPackage: %s", err) | ||
| } | ||
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| log.Println("=== start sieving ===") | ||
|
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| // Process the tables sequential | ||
| for _, table := range tables { | ||
| log.Printf(" sieving %s", table.name) | ||
| preSieve := make(chan feature) | ||
| postSieve := make(chan feature) | ||
| kill := make(chan bool) | ||
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| go writeFeatures(postSieve, kill, trgHandle, table, c.Int(PAGESIZE)) | ||
| go sieveFeatures(preSieve, postSieve, c.Float64(RESOLUTION)) | ||
| go readFeatures(srcHandle, preSieve, table) | ||
|
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| for { | ||
| if <-kill { | ||
| break | ||
| } | ||
| } | ||
| close(kill) | ||
| log.Println(fmt.Sprintf(` finished %s`, table.name)) | ||
| log.Println("") | ||
| } | ||
|
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| log.Println("=== done sieving ===") | ||
| return nil | ||
| } | ||
|
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| err := app.Run(os.Args) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } |
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