move: format/packp -> protocol/packp (#141)

* move: format/packp -> protocol/packp

* format/packp -> protocol/packp
* format/packp/pktline -> format/pktline.

* move: protocol/packp/ulreq/* -> protocol/packp/*

* protocol/packp: rename UlReq types to make them unique.

* * protocol/packp: namespace UlReq encoder.

* protocol/packp: namespace UlReq decoder.

* protocol/packp: fix example names

* move: protocol/packp/advrefs/* -> protocol/packp/*

* further ulreq namespacing

* protocol/packp: namespace AdvRefs types.

1 files changed, 40 insertions, 0 deletions

diff --git a/plumbing/protocol/packp/advrefs.go b/plumbing/protocol/packp/advrefs.go
new file mode 100644
index 0000000..c54f9d8
--- /dev/null
+++ b/plumbing/protocol/packp/advrefs.go
@@ -0,0 +1,40 @@
+package packp
+
+import (
+	"gopkg.in/src-d/go-git.v4/plumbing"
+)
+
+// AdvRefs values represent the information transmitted on an
+// advertised-refs message.  Values from this type are not zero-value
+// safe, use the New function instead.
+//
+// When using this messages over (smart) HTTP, you have to add a pktline
+// before the whole thing with the following payload:
+//
+// '# service=$servicename" LF
+//
+// Moreover, some (all) git HTTP smart servers will send a flush-pkt
+// just after the first pkt-line.
+//
+// To accomodate both situations, the Prefix field allow you to store
+// any data you want to send before the actual pktlines.  It will also
+// be filled up with whatever is found on the line.
+type AdvRefs struct {
+	Prefix       [][]byte // payloads of the prefix
+	Head         *plumbing.Hash
+	Capabilities *Capabilities
+	References   map[string]plumbing.Hash
+	Peeled       map[string]plumbing.Hash
+	Shallows     []plumbing.Hash
+}
+
+// NewAdvRefs returns a pointer to a new AdvRefs value, ready to be used.
+func NewAdvRefs() *AdvRefs {
+	return &AdvRefs{
+		Prefix:       [][]byte{},
+		Capabilities: NewCapabilities(),
+		References:   make(map[string]plumbing.Hash),
+		Peeled:       make(map[string]plumbing.Hash),
+		Shallows:     []plumbing.Hash{},
+	}
+}