draft nip-34 helpers.

event.go

@@ -40,6 +40,7 @@ const (
 	KindChannelMessage              int = 42
 	KindChannelHideMessage          int = 43
 	KindChannelMuteUser             int = 44
+	KindPatch                       int = 1617
 	KindFileMetadata                int = 1063
 	KindSimpleGroupAddUser          int = 9000
 	KindSimpleGroupRemoveUser       int = 9001
@@ -67,6 +68,7 @@ const (
 	KindProductDefinition           int = 30018
 	KindArticle                     int = 30023
 	KindApplicationSpecificData     int = 30078
+	KindRepositoryAnnouncement      int = 30617
 	KindSimpleGroupMetadata         int = 39000
 	KindSimpleGroupAdmins           int = 39001
 	KindSimpleGroupMembers          int = 39002

go.mod

@@ -20,6 +20,7 @@ require (
 require (
 	github.com/FactomProject/basen v0.0.0-20150613233007-fe3947df716e // indirect
 	github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec // indirect
+	github.com/bluekeyes/go-gitdiff v0.7.1 // indirect
 	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 // indirect
 	github.com/decred/dcrd/crypto/blake256 v1.0.1 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect

go.sum

@@ -3,6 +3,8 @@ github.com/FactomProject/basen v0.0.0-20150613233007-fe3947df716e/go.mod h1:kGUq
 github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec h1:1Qb69mGp/UtRPn422BH4/Y4Q3SLUrD9KHuDkm8iodFc=
 github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec/go.mod h1:CD8UlnlLDiqb36L110uqiP2iSflVjx9g/3U9hCI4q2U=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
+github.com/bluekeyes/go-gitdiff v0.7.1 h1:graP4ElLRshr8ecu0UtqfNTCHrtSyZd3DABQm/DWesQ=
+github.com/bluekeyes/go-gitdiff v0.7.1/go.mod h1:QpfYYO1E0fTVHVZAZKiRjtSGY9823iCdvGXBcEzHGbM=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btcd v0.22.0-beta.0.20220111032746-97732e52810c/go.mod h1:tjmYdS6MLJ5/s0Fj4DbLgSbDHbEqLJrtnHecBFkdz5M=
 github.com/btcsuite/btcd v0.23.0/go.mod h1:0QJIIN1wwIXF/3G/m87gIwGniDMDQqjVn4SZgnFpsYY=

nip34/nip34.go

@@ -0,0 +1 @@
+package nip34

nip34/patch.go

@@ -0,0 +1,60 @@
+package nip34
+
+import (
+	"strings"
+
+	"github.com/bluekeyes/go-gitdiff/gitdiff"
+	"github.com/nbd-wtf/go-nostr"
+)
+
+type Patch struct {
+	nostr.Event
+
+	Repository nostr.EntityPointer
+	Subject    string
+
+	Files  []*gitdiff.File
+	Header *gitdiff.PatchHeader
+}
+
+func ParsePatch(event nostr.Event) Patch {
+	patch := Patch{
+		Event: event,
+	}
+
+	for _, tag := range event.Tags {
+		if len(tag) < 2 {
+			continue
+		}
+		switch tag[0] {
+		case "a":
+			spl := strings.Split(tag[1], ":")
+			if len(spl) != 3 {
+				continue
+			}
+			if !nostr.IsValid32ByteHex(spl[1]) {
+				continue
+			}
+			patch.Repository.Kind = nostr.KindRepositoryAnnouncement
+			patch.Repository.PublicKey = spl[1]
+			patch.Repository.Identifier = spl[2]
+			if len(tag) >= 3 {
+				patch.Repository.Relays = []string{tag[2]}
+			}
+		}
+	}
+
+	files, preamble, err := gitdiff.Parse(strings.NewReader(event.Content))
+	if err != nil {
+		return patch
+	}
+	patch.Files = files
+
+	header, err := gitdiff.ParsePatchHeader(preamble)
+	if err != nil {
+		return patch
+	}
+	patch.Header = header
+
+	return patch
+}

nip34/repository.go

@@ -0,0 +1,42 @@
+package nip34
+
+import "github.com/nbd-wtf/go-nostr"
+
+type Repository struct {
+	nostr.Event
+
+	ID          string
+	Name        string
+	Description string
+	Web         []string
+	Clone       []string
+	Relays      []string
+}
+
+func ParseRepository(event nostr.Event) Repository {
+	repo := Repository{
+		Event: event,
+	}
+
+	for _, tag := range event.Tags {
+		if len(tag) < 2 {
+			continue
+		}
+		switch tag[0] {
+		case "d":
+			repo.ID = tag[1]
+		case "name":
+			repo.Name = tag[1]
+		case "description":
+			repo.Description = tag[1]
+		case "web":
+			repo.Web = append(repo.Web, tag[1])
+		case "clone":
+			repo.Clone = append(repo.Clone, tag[1])
+		case "relays":
+			repo.Relays = append(repo.Relays, tag[1])
+		}
+	}
+
+	return repo
+}