func (dp CSVDataProvider) dataChannel() <-chan *Track {
result := make(chan *Track, 10)
var reader io.ReadSeeker = createReader(dp.file_path)
var scanner *reverse.Scanner = reverse.NewScanner(reader)
var symbol string = getSymbolFromPath(dp.file_path)
go func() {
for scanner.Scan() {
var text string = scanner.Text()
var split_text []string = strings.Split(text, ",")
if split_text[0] != "Date" {
var track *Track = &Track{
symbol: symbol,
date: parseTime(split_text[0]),
open: parseFloat32(split_text[1]),
high: parseFloat32(split_text[2]),
low: parseFloat32(split_text[3]),
end: parseFloat32(split_text[4]),
volume: parseUint64(split_text[5]),
}
result <- track
}
}
close(result)
}()
return result
}
func main() {
const input = "Now is the winter of our discontent,\nMade glorious summer by this sun of York.\n"
scanner := reverse.NewScanner(strings.NewReader(input))
scanner.Split(bufio.ScanWords)
for scanner.Scan() {
fmt.Println(scanner.Text())
}
}
func TestScan(t *testing.T) {
for i, test := range scanTests {
t.Logf("test %d", i)
b := reverse.NewScanner(strings.NewReader(test.text))
b.SetBufSize(10)
b.Split(test.split)
var got []string
for b.Scan() {
got = append(got, b.Text())
}
if b.Err() != nil {
t.Fatalf("error after scan: %v", b.Err())
}
if !reflect.DeepEqual(got, test.tokens) {
t.Fatalf("token mismatch; got %q want %q", got, test.tokens)
}
}
}