From e2c6ae3333a3facd13aa52e1986a2ba2dbc56a9d Mon Sep 17 00:00:00 2001 From: Ayman Bagabas Date: Fri, 17 Nov 2023 15:28:25 -0500 Subject: plumbing: handle pktline erro-line as errors Error when encountering an error-line See https://git-scm.com/docs/pack-protocol Update plumbing/format/pktline/error.go Co-authored-by: Paulo Gomes Update plumbing/format/pktline/error.go Co-authored-by: Paulo Gomes feat: format newline --- plumbing/format/pktline/error.go | 51 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 plumbing/format/pktline/error.go (limited to 'plumbing/format/pktline/error.go') diff --git a/plumbing/format/pktline/error.go b/plumbing/format/pktline/error.go new file mode 100644 index 0000000..2c0e5a7 --- /dev/null +++ b/plumbing/format/pktline/error.go @@ -0,0 +1,51 @@ +package pktline + +import ( + "bytes" + "errors" + "io" + "strings" +) + +var ( + // ErrInvalidErrorLine is returned by Decode when the packet line is not an + // error line. + ErrInvalidErrorLine = errors.New("expected an error-line") + + errPrefix = []byte("ERR ") +) + +// ErrorLine is a packet line that contains an error message. +// Once this packet is sent by client or server, the data transfer process is +// terminated. +// See https://git-scm.com/docs/pack-protocol#_pkt_line_format +type ErrorLine struct { + Text string +} + +// Error implements the error interface. +func (e *ErrorLine) Error() string { + return e.Text +} + +// Encode encodes the ErrorLine into a packet line. +func (e *ErrorLine) Encode(w io.Writer) error { + p := NewEncoder(w) + return p.Encodef("%s%s\n", string(errPrefix), e.Text) +} + +// Decode decodes a packet line into an ErrorLine. +func (e *ErrorLine) Decode(r io.Reader) error { + s := NewScanner(r) + if !s.Scan() { + return s.Err() + } + + line := s.Bytes() + if !bytes.HasPrefix(line, errPrefix) { + return ErrInvalidErrorLine + } + + e.Text = strings.TrimSpace(string(line[4:])) + return nil +} -- cgit