From ac095bb12c4d29722b60ba9f20590fa7cfa6bc7d Mon Sep 17 00:00:00 2001 From: Máximo Cuadros Date: Tue, 8 Nov 2016 23:46:38 +0100 Subject: new plumbing package (#118) * plumbing: now core was renamed to core, and formats and clients moved inside --- formats/packp/ulreq/encoder.go | 140 ----------------------------------------- 1 file changed, 140 deletions(-) delete mode 100644 formats/packp/ulreq/encoder.go (limited to 'formats/packp/ulreq/encoder.go') diff --git a/formats/packp/ulreq/encoder.go b/formats/packp/ulreq/encoder.go deleted file mode 100644 index 1e40b63..0000000 --- a/formats/packp/ulreq/encoder.go +++ /dev/null @@ -1,140 +0,0 @@ -package ulreq - -import ( - "fmt" - "io" - "sort" - "time" - - "gopkg.in/src-d/go-git.v4/core" - "gopkg.in/src-d/go-git.v4/formats/packp/pktline" -) - -// An Encoder writes UlReq values to an output stream. -type Encoder struct { - pe *pktline.Encoder // where to write the encoded data - data *UlReq // the data to encode - sortedWants []string - err error // sticky error -} - -// NewEncoder returns a new encoder that writes to w. -func NewEncoder(w io.Writer) *Encoder { - return &Encoder{ - pe: pktline.NewEncoder(w), - } -} - -// Encode writes the UlReq encoding of v to the stream. -// -// All the payloads will end with a newline character. Wants and -// shallows are sorted alphabetically. A depth of 0 means no depth -// request is sent. -func (e *Encoder) Encode(v *UlReq) error { - if len(v.Wants) == 0 { - return fmt.Errorf("empty wants provided") - } - - e.data = v - e.sortedWants = sortHashes(v.Wants) - - for state := encodeFirstWant; state != nil; { - state = state(e) - } - - return e.err -} - -type encoderStateFn func(*Encoder) encoderStateFn - -func sortHashes(list []core.Hash) []string { - sorted := make([]string, len(list)) - for i, hash := range list { - sorted[i] = hash.String() - } - sort.Strings(sorted) - - return sorted -} - -func encodeFirstWant(e *Encoder) encoderStateFn { - var err error - if e.data.Capabilities.IsEmpty() { - err = e.pe.Encodef("want %s\n", e.sortedWants[0]) - } else { - e.data.Capabilities.Sort() - err = e.pe.Encodef( - "want %s %s\n", - e.sortedWants[0], - e.data.Capabilities.String(), - ) - } - if err != nil { - e.err = fmt.Errorf("encoding first want line: %s", err) - return nil - } - - return encodeAditionalWants -} - -func encodeAditionalWants(e *Encoder) encoderStateFn { - for _, w := range e.sortedWants[1:] { - if err := e.pe.Encodef("want %s\n", w); err != nil { - e.err = fmt.Errorf("encoding want %q: %s", w, err) - return nil - } - } - - return encodeShallows -} - -func encodeShallows(e *Encoder) encoderStateFn { - sorted := sortHashes(e.data.Shallows) - for _, s := range sorted { - if err := e.pe.Encodef("shallow %s\n", s); err != nil { - e.err = fmt.Errorf("encoding shallow %q: %s", s, err) - return nil - } - } - - return encodeDepth -} - -func encodeDepth(e *Encoder) encoderStateFn { - switch depth := e.data.Depth.(type) { - case DepthCommits: - if depth != 0 { - commits := int(depth) - if err := e.pe.Encodef("deepen %d\n", commits); err != nil { - e.err = fmt.Errorf("encoding depth %d: %s", depth, err) - return nil - } - } - case DepthSince: - when := time.Time(depth).UTC() - if err := e.pe.Encodef("deepen-since %d\n", when.Unix()); err != nil { - e.err = fmt.Errorf("encoding depth %s: %s", when, err) - return nil - } - case DepthReference: - reference := string(depth) - if err := e.pe.Encodef("deepen-not %s\n", reference); err != nil { - e.err = fmt.Errorf("encoding depth %s: %s", reference, err) - return nil - } - default: - e.err = fmt.Errorf("unsupported depth type") - return nil - } - - return encodeFlush -} - -func encodeFlush(e *Encoder) encoderStateFn { - if err := e.pe.Flush(); err != nil { - e.err = fmt.Errorf("encoding flush-pkt: %s", err) - return nil - } - - return nil -} -- cgit