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| package colorable
|
| import (
| "bytes"
| "io"
| )
|
| // NonColorable hold writer but remove escape sequence.
| type NonColorable struct {
| out io.Writer
| }
|
| // NewNonColorable return new instance of Writer which remove escape sequence from Writer.
| func NewNonColorable(w io.Writer) io.Writer {
| return &NonColorable{out: w}
| }
|
| // Write write data on console
| func (w *NonColorable) Write(data []byte) (n int, err error) {
| er := bytes.NewReader(data)
| var bw [1]byte
| loop:
| for {
| c1, err := er.ReadByte()
| if err != nil {
| break loop
| }
| if c1 != 0x1b {
| bw[0] = c1
| w.out.Write(bw[:])
| continue
| }
| c2, err := er.ReadByte()
| if err != nil {
| break loop
| }
| if c2 != 0x5b {
| continue
| }
|
| var buf bytes.Buffer
| for {
| c, err := er.ReadByte()
| if err != nil {
| break loop
| }
| if ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '@' {
| break
| }
| buf.Write([]byte(string(c)))
| }
| }
|
| return len(data), nil
| }
|
|
