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46 lines
948 B
46 lines
948 B
package output
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"os"
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"strings"
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"gitoa.ru/go-4devs/console/output/label"
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"gitoa.ru/go-4devs/console/output/verbosity"
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)
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const newline = "\n"
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func Stderr() Output {
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return New(os.Stderr, FormatString)
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}
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func Stdout() Output {
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return New(os.Stdout, FormatString)
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}
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func Buffer(buf *bytes.Buffer) Output {
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return New(buf, FormatString)
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}
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func FormatString(_ verbosity.Verbosity, msg string, kv ...label.KeyValue) string {
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if len(kv) > 0 {
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nline := ""
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if msg[len(msg)-1:] == newline {
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nline = newline
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}
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return "msg=\"" + strings.TrimSpace(msg) + "\", " + label.KeyValues(kv).String() + nline
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}
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return msg
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}
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func New(w io.Writer, format func(verb verbosity.Verbosity, msg string, kv ...label.KeyValue) string) Output {
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return func(ctx context.Context, verb verbosity.Verbosity, msg string, kv ...label.KeyValue) (int, error) {
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return fmt.Fprint(w, format(verb, msg, kv...))
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}
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}
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