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data-xlsx.go
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data-xlsx.go
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package covid19brazilimporter
import (
"fmt"
"log"
"net/http"
"strings"
excelize "github.com/360EntSecGroup-Skylar/excelize/v2"
)
// XLSXReader is a data reader for xlsx files
type XLSXReader struct{}
func (XLSXReader) read(fileURL string) (Regions, error) {
regions := make(Regions)
resp, _ := http.Get(fileURL)
file, fileError := excelize.OpenReader(resp.Body)
if fileError != nil {
return nil, fileError
}
rows, rowsError := file.Rows("Sheet 1")
if rowsError != nil {
return nil, rowsError
}
// ignore header
rows.Next()
// we need to call columns to thrash the header columns
rows.Columns()
for rows.Next() {
row, columnsErr := rows.Columns()
if columnsErr != nil {
log.Printf("WARN: error reading xlsx file %v", columnsErr.Error())
continue
}
pointerRows := make([]*string, len(row))
for index, value := range row {
valuePointer := value
pointerRows[index] = &valuePointer
}
err := regions.ProcessRow(pointerRows)
if err != nil {
fmt.Printf("error processing row %v\n", err.Error())
}
}
return regions, nil
}
func (XLSXReader) supports(fileURL string) bool {
return strings.HasSuffix(fileURL, ".xlsx")
}