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thisisaaronland
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "flag" | ||
| "fmt" | ||
| "io" | ||
| "log" | ||
| "os" | ||
| "strconv" | ||
| "sync" | ||
|
|
||
| "github.com/sfomuseum/go-csvdict" | ||
| "github.com/sfomuseum/go-flags/multi" | ||
| "github.com/tidwall/gjson" | ||
| "github.com/whosonfirst/go-whosonfirst-feature/properties" | ||
| "github.com/whosonfirst/go-whosonfirst-iterate/v2/iterator" | ||
| ) | ||
|
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| func main() { | ||
|
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| var fields multi.MultiCSVString | ||
|
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| iterator_uri := flag.String("iterator-uri", "repo://", "") | ||
| flag.Var(&fields, "field", "One or more relative 'properties.FIELDNAME' paths to include the CSV output. If the fieldname is 'path' the filename of the current record will be included. If the fieldname is 'centroid' the primary centroid of the current record will be derived and included as 'latitude' and 'longitude' columns.") | ||
|
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| flag.Usage = func() { | ||
|
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| fmt.Fprintf(os.Stderr, "Export one or more WOF records as a CSV document written to STDOUT\n\n") | ||
| fmt.Fprintf(os.Stderr, "Usage:\n\t %s [options] path-(N) path-(N)\n\n", os.Args[0]) | ||
| fmt.Fprintf(os.Stderr, "For example:\n") | ||
| fmt.Fprintf(os.Stderr, "\t%s -field wof:id -field wof:name -field centroid -iterator-uri 'repo://?include=properties.mz:is_current=1' /usr/local/data/sfomuseum-data-publicart/\n", os.Args[0]) | ||
| fmt.Fprintf(os.Stderr, "Valid options are:\n") | ||
| flag.PrintDefaults() | ||
| } | ||
|
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| flag.Parse() | ||
|
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| uris := flag.Args() | ||
|
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| ctx := context.Background() | ||
|
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| writers := []io.Writer{ | ||
| os.Stdout, | ||
| } | ||
|
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| mw := io.MultiWriter(writers...) | ||
|
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| var csv_wr *csvdict.Writer | ||
|
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| mu := new(sync.RWMutex) | ||
|
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| iter_cb := func(ctx context.Context, path string, fh io.ReadSeeker, args ...interface{}) error { | ||
|
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| body, err := io.ReadAll(fh) | ||
|
|
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| if err != nil { | ||
| return fmt.Errorf("Failed to read %s, %w", path, err) | ||
| } | ||
|
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| out := make(map[string]string) | ||
|
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| for _, k := range fields { | ||
|
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| switch k { | ||
| case "path": | ||
| out[k] = path | ||
| case "centroid": | ||
|
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| c, _, err := properties.Centroid(body) | ||
|
|
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| if err != nil { | ||
| return fmt.Errorf("Failed to derive centroid for %s, %w", path, err) | ||
| } | ||
|
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| out["latitude"] = strconv.FormatFloat(c.Lat(), 'f', -1, 64) | ||
| out["longitude"] = strconv.FormatFloat(c.Lon(), 'f', -1, 64) | ||
|
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| default: | ||
|
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| fq_k := fmt.Sprintf("properties.%s", k) | ||
| rsp := gjson.GetBytes(body, fq_k) | ||
| out[k] = rsp.String() | ||
| } | ||
| } | ||
|
|
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| if csv_wr == nil { | ||
|
|
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| fieldnames := make([]string, 0) | ||
|
|
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| for f, _ := range out { | ||
| fieldnames = append(fieldnames, f) | ||
| } | ||
|
|
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| wr, err := csvdict.NewWriter(mw, fieldnames) | ||
|
|
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| if err != nil { | ||
| return fmt.Errorf("Failed to create CSV writer, %w", err) | ||
| } | ||
|
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| csv_wr = wr | ||
|
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| err = csv_wr.WriteHeader() | ||
|
|
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| if err != nil { | ||
| return fmt.Errorf("Failed to write CSV header, %w", err) | ||
| } | ||
| } | ||
|
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| mu.Lock() | ||
| defer mu.Unlock() | ||
|
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| err = csv_wr.WriteRow(out) | ||
|
|
||
| if err != nil { | ||
| return fmt.Errorf("Failed to write row for %s, %w", path, err) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| iter, err := iterator.NewIterator(ctx, *iterator_uri, iter_cb) | ||
|
|
||
| if err != nil { | ||
| log.Fatalf("Failed to create iterator, %v", err) | ||
| } | ||
|
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| err = iter.IterateURIs(ctx, uris...) | ||
|
|
||
| if err != nil { | ||
| log.Fatalf("Failed to iterate URIs, %v", err) | ||
| } | ||
|
|
||
| csv_wr.Flush() | ||
| } |
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