71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
package exporter
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import (
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"encoding/csv"
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"fmt"
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"github.com/geziyor/geziyor"
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"log"
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"os"
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"reflect"
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"sync"
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)
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// CSVExporter exports response data as CSV streaming file
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type CSVExporter struct {
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FileName string
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once sync.Once
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mut sync.Mutex
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writer *csv.Writer
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}
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func (e *CSVExporter) Export(response *geziyor.Response) {
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// Default filename
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if e.FileName == "" {
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e.FileName = "out.csv"
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}
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// Create file
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e.once.Do(func() {
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newFile, err := os.OpenFile(e.FileName, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
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if err != nil {
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fmt.Fprintf(os.Stderr, "output file creation error: %v", err)
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return
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}
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e.writer = csv.NewWriter(newFile)
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})
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// Export data as responses came
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for res := range response.Exports {
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var values []string
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// Detect type and extract CSV values
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val := reflect.ValueOf(res)
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switch val.Kind() {
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case reflect.Slice:
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for i := 0; i < val.Len(); i++ {
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values = append(values, fmt.Sprint(val.Index(i)))
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}
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//case reflect.Map:
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// iter := val.MapRange()
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// for iter.Next() {
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// values = append(values, fmt.Sprint(iter.Value()))
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// }
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}
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// Write to file
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e.mut.Lock()
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if err := e.writer.Write(values); err != nil {
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log.Printf("CSV writing error on exporter: %v\n", err)
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}
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e.mut.Unlock()
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}
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e.mut.Lock()
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e.writer.Flush()
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e.mut.Unlock()
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}
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