mirror of https://github.com/containers/podman.git
94 lines
1.5 KiB
Go
94 lines
1.5 KiB
Go
package vtclean
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import (
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"bufio"
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"bytes"
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"io"
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)
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type reader struct {
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io.Reader
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scanner *bufio.Scanner
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buf []byte
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color bool
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}
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func NewReader(r io.Reader, color bool) io.Reader {
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return &reader{Reader: r, color: color}
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}
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func (r *reader) scan() bool {
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if r.scanner == nil {
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r.scanner = bufio.NewScanner(r.Reader)
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}
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if len(r.buf) > 0 {
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return true
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}
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if r.scanner.Scan() {
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r.buf = []byte(Clean(r.scanner.Text(), r.color) + "\n")
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return true
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}
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return false
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}
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func (r *reader) fill(p []byte) int {
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n := len(r.buf)
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copy(p, r.buf)
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if len(p) < len(r.buf) {
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r.buf = r.buf[len(p):]
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n = len(p)
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} else {
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r.buf = nil
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}
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return n
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}
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func (r *reader) Read(p []byte) (int, error) {
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n := r.fill(p)
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if n < len(p) {
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if !r.scan() {
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if n == 0 {
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return 0, io.EOF
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}
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return n, nil
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}
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n += r.fill(p[n:])
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}
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return n, nil
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}
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type writer struct {
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io.Writer
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buf []byte
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color bool
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}
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func NewWriter(w io.Writer, color bool) io.WriteCloser {
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return &writer{Writer: w, color: color}
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}
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func (w *writer) Write(p []byte) (int, error) {
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buf := append(w.buf, p...)
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lines := bytes.Split(buf, []byte("\n"))
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if len(lines) > 0 {
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last := len(lines) - 1
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w.buf = lines[last]
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count := 0
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for _, line := range lines[:last] {
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n, err := w.Writer.Write([]byte(Clean(string(line), w.color) + "\n"))
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count += n
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if err != nil {
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return count, err
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}
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}
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}
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return len(p), nil
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}
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func (w *writer) Close() error {
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cl := Clean(string(w.buf), w.color)
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_, err := w.Writer.Write([]byte(cl))
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return err
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}
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