Regenerate proto to avoid conflicts with pg_query_go (#13)

go.mod

@@ -3,7 +3,6 @@ module github.com/wasilibs/go-pgquery
 go 1.19
 
 require (
-	github.com/golang/protobuf v1.5.3
 	github.com/google/go-cmp v0.5.5
 	github.com/wasilibs/wazerox v0.0.0-20231117065139-b3503f4aeff6
 	google.golang.org/protobuf v1.31.0

go.sum

@@ -1,13 +1,10 @@
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
-github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/wasilibs/wazerox v0.0.0-20231117065139-b3503f4aeff6 h1:jwbU8u5TuXModzdEG4wI0g4FyuD7ROSttU86go5sPdU=
 github.com/wasilibs/wazerox v0.0.0-20231117065139-b3503f4aeff6/go.mod h1:IQNVyA4d1hWIe23mlMMuqXjyWMdndgSlNx6FqBkwPsM=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
 google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=

magefiles/magefile.go

@@ -1,9 +1,53 @@
 package main
 
 import (
+	"bufio"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"github.com/magefile/mage/sh"
+
 	"github.com/wasilibs/magefiles" // mage:import
 )
 
 func init() {
 	magefiles.SetLibraryName("pgquery")
 }
+
+// GenerateProto generates Go stubs from the libpgquery proto file.
+// We regenerate because even when Go packages are different, only
+// a single instance of a type can be registered if with the same
+// package and it should be allowed to import both this and pg_query_go
+// for transition reasons.
+func GenerateProto() error {
+	if err := os.MkdirAll("build", 0o755); err != nil {
+		return err
+	}
+
+	resp, err := http.Get("https://raw.githubusercontent.com/pganalyze/libpg_query/15-4.2.3/protobuf/pg_query.proto")
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	f, err := os.Create(filepath.Join("build", "pg_query_wasilibs.proto"))
+	if err != nil {
+		return err
+	}
+
+	s := bufio.NewScanner(resp.Body)
+	for s.Scan() {
+		if s.Text() == "package pg_query;" {
+			_, _ = f.WriteString("package pg_query_wasilibs;\n")
+			continue
+		}
+		_, _ = f.WriteString(s.Text() + "\n")
+	}
+
+	if err := sh.RunV("go", "run", "github.com/curioswitch/protog/cmd@v0.3.0", "-I", "build", "--go_out=.", "--go_opt=Mpg_query_wasilibs.proto=/pg_query", "--go_opt=paths=source_relative", "build/pg_query_wasilibs.proto"); err != nil {
+		return err
+	}
+
+	return nil
+}