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package git
import (
"bufio"
"fmt"
"io"
"strings"
)
// ShowRefDecoder parses the output format of git-show-ref
type ShowRefDecoder struct {
r *bufio.Reader
err error
}
// NewShowRefDecoder returns a new ShowRefDecoder
func NewShowRefDecoder(r io.Reader) *ShowRefDecoder {
return &ShowRefDecoder{
r: bufio.NewReader(r),
}
}
// Decode reads and parses the next reference. Returns io.EOF when the end of
// the reader has been reached.
func (d *ShowRefDecoder) Decode(ref *Reference) error {
if d.err != nil {
return d.err
}
line, err := d.r.ReadString('\n')
d.err = err
if len(line) > 0 && line[len(line)-1] == '\n' {
line = line[:len(line)-1]
}
splits := strings.SplitN(line, " ", 2)
if len(splits) != 2 {
if d.err != nil {
return d.err
}
return fmt.Errorf("show-ref decoder: invalid line: %q", line)
}
*ref = NewReference(ReferenceName(splits[1]), splits[0])
return nil
}
|
