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Merge pull request #1737 from estesp/progress-line-fixup

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Handle progress line length properly for formatting
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Stephen Day 2017-11-14 14:40:32 -08:00 committed by GitHub
commit d15cee0358
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1 changed files with 10 additions and 1 deletions
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11
progress/writer.go
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@ -4,11 +4,16 @@ import (
"bytes" "bytes"
"fmt" "fmt"
"io" "io"
"regexp"
"strings" "strings"
"github.com/containerd/console" "github.com/containerd/console"
) )
var (
regexCleanLine = regexp.MustCompile("\x1b\\[[0-9]+m[\x1b]?")
)
// Writer buffers writes until flush, at which time the last screen is cleared // Writer buffers writes until flush, at which time the last screen is cleared
// and the current buffer contents are written. This is useful for // and the current buffer contents are written. This is useful for
// implementing progress displays, such as those implemented in docker and // implementing progress displays, such as those implemented in docker and
@ -48,7 +53,7 @@ func (w *Writer) Flush() error {
strlines := strings.Split(w.buf.String(), "\n") strlines := strings.Split(w.buf.String(), "\n")
w.lines = -1 w.lines = -1
for _, line := range strlines { for _, line := range strlines {
w.lines += len(line)/int(ws.Width) + 1 w.lines += (len(stripLine(line))-1)/int(ws.Width) + 1
} }
if _, err := w.w.Write(w.buf.Bytes()); err != nil { if _, err := w.w.Write(w.buf.Bytes()); err != nil {
@ -71,3 +76,7 @@ func (w *Writer) clear() error {
return nil return nil
} }
func stripLine(line string) string {
return string(regexCleanLine.ReplaceAll([]byte(line), []byte{}))
}