mirror of
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106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
package raww
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import (
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"context"
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"fmt"
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"io"
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"strconv"
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"sync"
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"time"
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"github.com/shopspring/decimal"
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"github.com/neilotoole/sq/cli/output"
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"github.com/neilotoole/sq/libsq/core/kind"
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"github.com/neilotoole/sq/libsq/core/record"
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"github.com/neilotoole/sq/libsq/core/stringz"
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)
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// recordWriter implements output.RecordWriter for raw output.
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// This is typically used to output a single blob result, such
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// as a gif etc. The elements of each record are directly
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// written to the backing writer without any separator, or
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// encoding, etc.
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type recordWriter struct {
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out io.Writer
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pr *output.Printing
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recMeta record.Meta
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mu sync.Mutex
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}
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var _ output.NewRecordWriterFunc = NewRecordWriter
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// NewRecordWriter returns an output.RecordWriter instance for
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// raw output. This is typically used to output a single blob result,
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// such as a gif etc. The elements of each record are directly
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// written to the backing writer without any separator, or
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// encoding, etc..
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func NewRecordWriter(out io.Writer, pr *output.Printing) output.RecordWriter {
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return &recordWriter{out: out, pr: pr}
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}
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// Open implements output.RecordWriter.
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func (w *recordWriter) Open(_ context.Context, recMeta record.Meta) error {
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w.recMeta = recMeta
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return nil
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}
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// WriteRecords implements output.RecordWriter.
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func (w *recordWriter) WriteRecords(ctx context.Context, recs []record.Record) error {
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w.mu.Lock()
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defer w.mu.Unlock()
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if len(recs) == 0 {
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return nil
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}
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for _, rec := range recs {
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select {
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case <-ctx.Done():
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return ctx.Err()
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default:
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}
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for i, val := range rec {
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switch val := val.(type) {
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case nil:
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case []byte:
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_, _ = w.out.Write(val)
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case string:
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_, _ = w.out.Write([]byte(val))
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case bool:
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fmt.Fprint(w.out, strconv.FormatBool(val))
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case int64:
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fmt.Fprint(w.out, strconv.FormatInt(val, 10))
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case float64:
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fmt.Fprint(w.out, stringz.FormatFloat(val))
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case decimal.Decimal:
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fmt.Fprint(w.out, stringz.FormatDecimal(val))
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case time.Time:
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switch w.recMeta[i].Kind() { //nolint:exhaustive
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default:
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fmt.Fprint(w.out, w.pr.FormatDatetime(val))
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case kind.Time:
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fmt.Fprint(w.out, w.pr.FormatTime(val))
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case kind.Date:
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fmt.Fprint(w.out, w.pr.FormatDate(val))
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}
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default:
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// should never happen
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fmt.Fprintf(w.out, "%s", val)
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}
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}
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}
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return nil
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}
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// Flush implements output.RecordWriter.
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func (w *recordWriter) Flush(context.Context) error {
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return nil
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}
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// Close implements output.RecordWriter.
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func (w *recordWriter) Close(context.Context) error {
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return nil
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}
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